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/pkg/tags/20220203/Makefile
0,0 → 1,87
#
# pkg Makefile -- requires OpenWatcom (wmake)
# Copyright (C) 2021 Mateusz Viste
#
 
CFLAGS = -0 -mc -os -wx -we -d0 -i=zlib
LDFLAGS = -lr -fe=pkg.exe
LIBS = zlib\zlib_c.lib svarlang.lib\svarlngc.lib
 
all: pkg.exe
 
release: pkg.exe .symbolic
mkdir appinfo
mkdir bin
mkdir nls
copy pkg.lng nls
upx --8086 -9 pkg.exe -o bin\pkg.exe
copy pkg.lsm appinfo
zip -9moDkrX pkg.zip appinfo bin nls
rmdir appinfo
rmdir bin
rmdir nls
 
pkg.exe: main.obj crc32.obj fileexst.obj helpers.obj inf.obj kprintf.obj libunzip.obj loadconf.obj lsm.obj pkginst.obj pkgrem.obj trim.obj showinst.obj unzip.obj deflang.obj
wcl $(LDFLAGS) $(LIBS) *.obj
 
deflang.obj: nls_utf8\pkg_en.txt
cd nls_utf8
copy pkg_en.txt en.txt
utf8tocp 850 pkg_de.txt > de.txt
utf8tocp 850 pkg_fr.txt > fr.txt
utf8tocp 850 pkg_dk.txt > dk.txt
utf8tocp 852 pkg_si.txt > si.txt
utf8tocp 857 pkg_tr.txt > tr.txt
utf8tocp maz pkg_pl.txt > pl.txt
..\svarlang.lib\tlumacz en de fr dk si tr pl
move out.lng ..\pkg.lng
move deflang.c ..
del ??.txt
cd ..
wcc $(CFLAGS) deflang.c
 
main.obj: main.c
wcc $(CFLAGS) main.c
 
crc32.obj: crc32.c
wcc $(CFLAGS) crc32.c
 
fileexst.obj: fileexst.c
wcc $(CFLAGS) fileexst.c
 
helpers.obj: helpers.c
wcc $(CFLAGS) helpers.c
 
inf.obj: inf.c
wcc $(CFLAGS) inf.c
 
kprintf.obj: kprintf.c
wcc $(CFLAGS) kprintf.c
 
libunzip.obj: libunzip.c
wcc $(CFLAGS) libunzip.c
 
loadconf.obj: loadconf.c
wcc $(CFLAGS) loadconf.c
 
lsm.obj: lsm.c
wcc $(CFLAGS) lsm.c
 
pkginst.obj: pkginst.c
wcc $(CFLAGS) pkginst.c
 
pkgrem.obj: pkgrem.c
wcc $(CFLAGS) pkgrem.c
 
trim.obj: trim.c
wcc $(CFLAGS) trim.c
 
showinst.obj: showinst.c
wcc $(CFLAGS) showinst.c
 
unzip.obj: unzip.c
wcc $(CFLAGS) unzip.c
 
clean: .symbolic
del *.obj
del pkg.exe
/pkg/tags/20220203/crc32.c
0,0 → 1,128
/*
* $Id: crc32.c,v 1.1.1.1 1996/02/18 21:38:12 ylo Exp $
* $Log: crc32.c,v $
* Revision 1.1.1.1 1996/02/18 21:38:12 ylo
* Imported ssh-1.2.13.
*
* Revision 1.2 1995/07/13 01:21:34 ylo
* Added cvs log.
*
* $Endlog$
*/
 
/* The implementation here was originally done by Gary S. Brown. I have
borrowed the tables directly, and made some minor changes to the
crc32-function (including changing the interface). */
 
#include "crc32.h"
 
/* ============================================================= */
/* COPYRIGHT (C) 1986 Gary S. Brown. You may use this program, or */
/* code or tables extracted from it, as desired without restriction. */
/* */
/* First, the polynomial itself and its table of feedback terms. The */
/* polynomial is */
/* X^32+X^26+X^23+X^22+X^16+X^12+X^11+X^10+X^8+X^7+X^5+X^4+X^2+X^1+X^0 */
/* */
/* Note that we take it "backwards" and put the highest-order term in */
/* the lowest-order bit. The X^32 term is "implied"; the LSB is the */
/* X^31 term, etc. The X^0 term (usually shown as "+1") results in */
/* the MSB being 1. */
/* */
/* Note that the usual hardware shift register implementation, which */
/* is what we're using (we're merely optimizing it by doing eight-bit */
/* chunks at a time) shifts bits into the lowest-order term. In our */
/* implementation, that means shifting towards the right. Why do we */
/* do it this way? Because the calculated CRC must be transmitted in */
/* order from highest-order term to lowest-order term. UARTs transmit */
/* characters in order from LSB to MSB. By storing the CRC this way, */
/* we hand it to the UART in the order low-byte to high-byte; the UART */
/* sends each low-bit to hight-bit; and the result is transmission bit */
/* by bit from highest- to lowest-order term without requiring any bit */
/* shuffling on our part. Reception works similarly. */
/* */
/* The feedback terms table consists of 256, 32-bit entries. Notes: */
/* */
/* The table can be generated at runtime if desired; code to do so */
/* is shown later. It might not be obvious, but the feedback */
/* terms simply represent the results of eight shift/xor opera- */
/* tions for all combinations of data and CRC register values. */
/* */
/* The values must be right-shifted by eight bits by the "updcrc" */
/* logic; the shift must be unsigned (bring in zeroes). On some */
/* hardware you could probably optimize the shift in assembler by */
/* using byte-swap instructions. */
/* polynomial $edb88320 */
/* */
/* -------------------------------------------------------------------- */
 
const unsigned long crc32_tab[256] = {
0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL, 0x076dc419L,
0x706af48fL, 0xe963a535L, 0x9e6495a3L, 0x0edb8832L, 0x79dcb8a4L,
0xe0d5e91eL, 0x97d2d988L, 0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L,
0x90bf1d91L, 0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL,
0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L, 0x136c9856L,
0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL, 0x14015c4fL, 0x63066cd9L,
0xfa0f3d63L, 0x8d080df5L, 0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L,
0xa2677172L, 0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL,
0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L, 0x32d86ce3L,
0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L, 0x26d930acL, 0x51de003aL,
0xc8d75180L, 0xbfd06116L, 0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L,
0xb8bda50fL, 0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L,
0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL, 0x76dc4190L,
0x01db7106L, 0x98d220bcL, 0xefd5102aL, 0x71b18589L, 0x06b6b51fL,
0x9fbfe4a5L, 0xe8b8d433L, 0x7807c9a2L, 0x0f00f934L, 0x9609a88eL,
0xe10e9818L, 0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L,
0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL, 0x6c0695edL,
0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L, 0x65b0d9c6L, 0x12b7e950L,
0x8bbeb8eaL, 0xfcb9887cL, 0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L,
0xfbd44c65L, 0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L,
0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL, 0x4369e96aL,
0x346ed9fcL, 0xad678846L, 0xda60b8d0L, 0x44042d73L, 0x33031de5L,
0xaa0a4c5fL, 0xdd0d7cc9L, 0x5005713cL, 0x270241aaL, 0xbe0b1010L,
0xc90c2086L, 0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL,
0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L, 0x59b33d17L,
0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL, 0xedb88320L, 0x9abfb3b6L,
0x03b6e20cL, 0x74b1d29aL, 0xead54739L, 0x9dd277afL, 0x04db2615L,
0x73dc1683L, 0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L,
0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L, 0xf00f9344L,
0x8708a3d2L, 0x1e01f268L, 0x6906c2feL, 0xf762575dL, 0x806567cbL,
0x196c3671L, 0x6e6b06e7L, 0xfed41b76L, 0x89d32be0L, 0x10da7a5aL,
0x67dd4accL, 0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L,
0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L, 0xd1bb67f1L,
0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL, 0xd80d2bdaL, 0xaf0a1b4cL,
0x36034af6L, 0x41047a60L, 0xdf60efc3L, 0xa867df55L, 0x316e8eefL,
0x4669be79L, 0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L,
0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL, 0xc5ba3bbeL,
0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L, 0xc2d7ffa7L, 0xb5d0cf31L,
0x2cd99e8bL, 0x5bdeae1dL, 0x9b64c2b0L, 0xec63f226L, 0x756aa39cL,
0x026d930aL, 0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L,
0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L, 0x92d28e9bL,
0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L, 0x86d3d2d4L, 0xf1d4e242L,
0x68ddb3f8L, 0x1fda836eL, 0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L,
0x18b74777L, 0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL,
0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L, 0xa00ae278L,
0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L, 0xa7672661L, 0xd06016f7L,
0x4969474dL, 0x3e6e77dbL, 0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L,
0x37d83bf0L, 0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L,
0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L, 0xbad03605L,
0xcdd70693L, 0x54de5729L, 0x23d967bfL, 0xb3667a2eL, 0xc4614ab8L,
0x5d681b02L, 0x2a6f2b94L, 0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL,
0x2d02ef8dL
};
 
/* Return a 32-bit CRC of the contents of the buffer. */
 
 
unsigned long crc32_init(void) {
return(0xFFFFFFFFlu);
}
 
void crc32_feed(unsigned long *crc32val, const unsigned char *s, unsigned int len) {
unsigned long i;
for (i = 0; i < len; i++) *crc32val = crc32_tab[(*crc32val ^ s[i]) & 0xff] ^ (*crc32val >> 8);
}
 
void crc32_finish(unsigned long *crc32val) {
*crc32val ^= 0xFFFFFFFFlu;
}
/pkg/tags/20220203/crc32.h
0,0 → 1,25
/*
* $Id: crc32.h,v 1.1.1.1 1996/02/18 21:38:11 ylo Exp $
* $Log: crc32.h,v $
* Revision 1.1.1.1 1996/02/18 21:38:11 ylo
* Imported ssh-1.2.13.
*
* Revision 1.2 1995/07/13 01:21:45 ylo
* Removed "Last modified" header.
* Added cvs log.
*
* $Endlog$
*/
 
#ifndef CRC32_H_SENTINEL
#define CRC32_H_SENTINEL
 
unsigned long crc32_init(void);
 
/* This computes a 32 bit CRC of the data in the buffer, and returns the
CRC. The polynomial used is 0xedb88320. */
void crc32_feed(unsigned long *crc32val, const unsigned char *buf, unsigned int len);
 
void crc32_finish(unsigned long *crc32val);
 
#endif /* CRC32_H_SENTINEL */
/pkg/tags/20220203/fileexst.c
0,0 → 1,15
/*
* fileexists checks whether a file exists or not.
* returns 0 if file not found, non-zero otherwise.
*/
 
#include <stdio.h>
#include "fileexst.h"
 
int fileexists(const char *filename) {
FILE *fd;
fd = fopen(filename, "rb");
if (fd == NULL) return(0); /* file does not exists */
fclose(fd);
return(1);
}
/pkg/tags/20220203/fileexst.h
0,0 → 1,11
/*
* fileexists checks whether a file exists or not.
* returns 0 if file not found, non-zero otherwise.
*/
 
#ifndef fileexists_sentinel
#define fileexists_sentinel
 
int fileexists(const char *filename);
 
#endif
/pkg/tags/20220203/helpers.c
0,0 → 1,165
/*
* This file is part of pkginst
* Copyright (C) 2012-2021 Mateusz Viste
*
* It contains a few helper function...
*/
 
 
#include <ctype.h> /* tolower() */
#include <direct.h> /* provides the mkdir() prototype */
#include <string.h> /* */
#include <stdio.h> /* sprintf() */
#include <stdlib.h> /* atoi() */
#include <sys/stat.h> /* mkdir() */
 
#include "trim.h"
#include "helpers.h"
 
 
/* change all / to \ in a string */
void slash2backslash(char *str) {
int x;
for (x = 0; str[x] != 0; x++) {
if (str[x] == '/') str[x] = '\\';
}
}
 
 
void removeDoubleBackslashes(char *str) {
char *curpos;
int x;
for (;;) {
curpos = strstr(str, "\\\\");
if (curpos == NULL) return; /* job done */
for (x = 1; curpos[x] != 0; x++) {
curpos[x - 1] = curpos[x];
}
curpos[x - 1] = 0;
}
}
 
 
/* converts a string to all lowercase */
void strtolower(char *mystring) {
int x;
for (x = 0; mystring[x] != 0; x++) mystring[x] = tolower(mystring[x]);
}
 
 
/* Find the first occurrence of find in s, ignore case. */
char *fdnpkg_strcasestr(const char *s, const char *find) {
char c, sc;
size_t len;
if ((c = *find++) != 0) {
c = tolower((unsigned char)c);
len = strlen(find);
do {
do {
if ((sc = *s++) == 0) return(NULL);
} while ((char)tolower((unsigned char)sc) != c);
} while (strncasecmp(s, find, len) != 0);
s--;
}
return((char *)s);
}
 
 
/* Creates directories recursively */
void mkpath(char *dirs) {
int x;
char savechar;
for (x = 0; dirs[x] != 0; x++) {
if (((dirs[x] == '/') || (dirs[x] == '\\')) && (x > 0)) {
if (dirs[x - 1] != ':') { /* avoid d:\ stuff */
savechar = dirs[x];
dirs[x] = 0;
/* make the dir */
mkdir(dirs);
dirs[x] = savechar;
}
}
}
}
 
 
/* returns a pointer to the start of the filename, out of a path\to\file string, and
fills respath with the local folder where the file should be placed. */
char *computelocalpath(char *longfilename, char *respath, const char *dosdir, const struct customdirs *dirlist) {
int x, lastsep = 0, firstsep = -1;
char savedchar;
char *shortfilename, *pathstart;
pathstart = longfilename;
for (x = 0; longfilename[x] != 0; x++) {
if ((longfilename[x] == '/') || (longfilename[x] == '\\')) {
lastsep = x;
if (firstsep < 0) firstsep = x;
}
}
shortfilename = &longfilename[lastsep + 1];
/* look for possible custom path */
if (firstsep > 0) {
savedchar = longfilename[firstsep];
longfilename[firstsep] = 0;
for (; dirlist != NULL; dirlist = dirlist->next) {
if (fdnpkg_strcasestr(longfilename, dirlist->name) == longfilename) { /* found! */
/* sprintf(respath, "%s\\%s", dirlist->location, &longfilename[firstsep + 1]); */
pathstart = &longfilename[firstsep + 1];
dosdir = dirlist->location;
break;
}
}
longfilename[firstsep] = savedchar; /* restore longfilename as it was */
}
/* apply the default (DOSDIR) path */
savedchar = longfilename[lastsep + 1];
longfilename[lastsep + 1] = 0;
sprintf(respath, "%s\\%s", dosdir, pathstart);
slash2backslash(respath);
removeDoubleBackslashes(respath);
longfilename[lastsep + 1] = savedchar;
return(shortfilename);
}
 
 
/* analyzes a filename string and returns the pointer to the file's extension
* (which can be empty) */
char *getfext(char *fname) {
char *res = NULL;
for (; *fname != 0; fname++) {
if (*fname == '.') res = fname + 1;
}
/* if no dot found, then point to the string's null terminator */
if (res == NULL) return(fname);
return(res);
}
 
 
/* reads a line from a "token = value" file, returns 0 on success
* val (if not NULL) is updated with a pointer to the "value" part
* delim is the delimiter char (typically ':' or '=' but can be anything) */
int freadtokval(FILE *fd, char *line, size_t maxlen, char **val, char delim) {
int bytebuff, linelen = 0;
if (val != NULL) *val = NULL;
for (;;) {
bytebuff = fgetc(fd);
if (bytebuff == EOF) {
if (linelen == 0) return(-1);
break;
}
if (bytebuff < 0) return(-1);
if ((*val == NULL) && (bytebuff == delim)) {
line[linelen++] = 0;
*val = line + linelen;
continue;
}
if (bytebuff == '\r') continue; /* ignore CR */
if (bytebuff == '\n') break;
if (linelen < maxlen - 1) line[linelen++] = bytebuff;
}
/* terminate line and trim token and value (if any) */
line[linelen] = 0;
trim(line);
if ((val != NULL) && (*val != NULL)) trim(*val);
return(0);
}
/pkg/tags/20220203/helpers.h
0,0 → 1,19
/*
* This file is part of pkginst
* Copyright (C) 2012-2021 Mateusz Viste
*
* It contains a few helper function...
*/
 
#ifndef helpers_sentinel
#define helpers_sentinel
#include "loadconf.h" /* required for the customdirs struct */
void slash2backslash(char *str);
void strtolower(char *mystring);
char *fdnpkg_strcasestr(const char *s, const char *find);
void mkpath(char *dirs);
char *computelocalpath(char *longfilename, char *respath, const char *dosdir, const struct customdirs *dirlist);
void removeDoubleBackslashes(char *str);
char *getfext(char *fname);
int freadtokval(FILE *fd, char *line, size_t maxlen, char **val, char delim);
#endif
/pkg/tags/20220203/inf.c
0,0 → 1,85
/* This file is part of the FDNPKG project. It is an adaptation of the
* "zpipe.c" example of zlib's inflate() and deflate() usage.
*
* Not copyrighted -- provided to the public domain
* original version 1.4 11 December 2005 Mark Adler
* adaptations for FDNPKG integration by Mateusz Viste, 2015
*/
 
#include <stdio.h>
#include <string.h>
 
#include "crc32.h"
#include "zlib\zlib.h"
 
#include "inf.h"
 
#define CHUNK 16384
 
/* Decompress from file source to file dest until stream ends or EOF.
* inf() returns Z_OK on success, Z_MEM_ERROR if memory could not be allocated
* for processing, Z_DATA_ERROR if the deflate data is invalid or incomplete,
* Z_VERSION_ERROR if the version of zlib.h and the version of the library
* linked do not match, or Z_ERRNO if there is an error reading or writing the
* files. */
int inf(FILE *source, FILE *dest, unsigned char *buff32K, unsigned long *cksum, long streamlen) {
int ret;
unsigned int have;
z_stream strm;
unsigned char *in = buff32K;
unsigned char *out = buff32K + CHUNK;
 
/* allocate inflate state */
strm.zalloc = Z_NULL;
strm.zfree = Z_NULL;
strm.opaque = Z_NULL;
strm.avail_in = 0;
strm.next_in = Z_NULL;
ret = inflateInit2(&strm, -15); /* according to the zlib doc, passing -15 to inflateInit2() means "this is a raw deflate stream" (as opposed to a zlib- or gz- wrapped stream) */
if (ret != Z_OK) return(ret);
 
/* decompress until deflate stream ends or end of file */
do {
strm.avail_in = fread(in, 1, (streamlen > CHUNK ? CHUNK : streamlen), source);
if (ferror(source)) {
(void)inflateEnd(&strm);
return(Z_ERRNO);
}
streamlen -= strm.avail_in;
if (strm.avail_in == 0) break;
strm.next_in = in;
 
/* run inflate() on input until output buffer not full */
do {
strm.avail_out = CHUNK;
strm.next_out = out;
ret = inflate(&strm, Z_NO_FLUSH);
switch (ret) {
case Z_NEED_DICT:
ret = Z_DATA_ERROR; /* and fall through */
case Z_DATA_ERROR:
case Z_MEM_ERROR:
(void)inflateEnd(&strm);
return(ret);
}
have = CHUNK - strm.avail_out;
if ((fwrite(out, 1, have, dest) != have) || (ferror(dest))) {
(void)inflateEnd(&strm);
return(Z_ERRNO);
}
/* feed the CRC32 */
crc32_feed(cksum, out, have);
} while (strm.avail_out == 0);
 
/* done when inflate() says it's done */
} while (ret != Z_STREAM_END);
 
/* clean up and return */
(void)inflateEnd(&strm);
 
if (Z_STREAM_END) {
return(Z_OK);
} else {
return(Z_DATA_ERROR);
}
}
/pkg/tags/20220203/inf.h
0,0 → 1,13
 
#ifndef INF_H
#define INF_H
 
/* Decompress from file source to file dest until stream ends or EOF.
* inf() returns Z_OK on success, Z_MEM_ERROR if memory could not be allocated
* for processing, Z_DATA_ERROR if the deflate data is invalid or incomplete,
* Z_VERSION_ERROR if the version of zlib.h and the version of the library
* linked do not match, or Z_ERRNO if there is an error reading or writing the
* files. */
int inf(FILE *source, FILE *dest, unsigned char *buff32k, unsigned long *cksum, long streamlen);
 
#endif
/pkg/tags/20220203/kprintf.c
0,0 → 1,20
/*
* This file provides dummy functions that simulate kitten-enabled routines
* without actually having kitten.
*
* Copyright (C) 2015-2022 Mateusz Viste
*/
 
#include <stdio.h> /* vprintf() */
#include <stdarg.h> /* va_list, va_start()... */
 
#include "svarlang.lib\svarlang.h"
 
#include "kprintf.h"
 
void kitten_printf(short x, short y, ...) {
va_list args;
va_start(args, y);
vprintf(svarlang_str(x, y), args);
va_end(args);
}
/pkg/tags/20220203/kprintf.h
0,0 → 1,11
/*
* The following is a macro-like function that uses kitten instead
* of directly doing printf.
*/
 
#ifndef kprintf_sentinel
#define kprintf_sentinel
 
void kitten_printf(short x, short y, ...);
 
#endif
/pkg/tags/20220203/libunzip.c
0,0 → 1,254
/*
* This file is part of pkg (SvarDOS)
* Copyright (C) 2012-2021 Mateusz Viste.
*
* Simple library providing functions to unzip files from zip archives.
*/
 
#include <stdio.h> /* printf(), FILE, fclose()... */
#include <stdlib.h> /* NULL */
#include <string.h> /* memset() */
#include <time.h> /* mktime() */
#include <utime.h> /* utime() */
#include <unistd.h> /* unlink() */
 
#include "crc32.h"
#include "kprintf.h"
#include "inf.h" /* INFLATE support */
 
#include "libunzip.h" /* include self for control */
 
 
/* converts a "DOS format" timestamp into unix timestamp. The DOS timestamp is constructed an array of 4 bytes, that contains following data at the bit level:
* HHHHHMMM MMMSSSSS YYYYYYYM MMMDDDDD
* where:
* day of month is always within 1-31 range;
* month is always within 1-12 range;
* year starts from 1980 and continues for 127 years
* seconds are actually not 0-59 but rather 0-29 as there are only 32 possible values – to get actual seconds multiply this field by 2;
* minutes are always within 0-59 range;
* hours are always within 0-23 range. */
static time_t dostime2unix(const unsigned char *buff) {
struct tm curtime;
time_t result;
memset(&curtime, 0, sizeof(curtime)); /* make sure to set everything in curtime to 0's */
curtime.tm_sec = (buff[0] & 31) << 1; /* seconds (0..60) */
curtime.tm_min = (((buff[1] << 8) | buff[0]) >> 5) & 63 ; /* minutes after the hour (0..59) */
curtime.tm_hour = (buff[1] >> 3); /* hours since midnight (0..23) */
curtime.tm_mday = buff[2] & 31; /* day of the month (1..31) */
curtime.tm_mon = ((((buff[3] << 8) | buff[2]) >> 5) & 15) - 1; /* months since January (0, 11) */
curtime.tm_year = (buff[3] >> 1) + 80; /* years since 1900 */
curtime.tm_wday = 0; /* days since Sunday (0..6) - leave 0, mktime() will set it */
curtime.tm_yday = 0; /* days since January 1 (0..365]) - leave 0, mktime() will set it */
curtime.tm_isdst = -1; /* Daylight Saving Time flag. Positive if DST is in effect, zero if not and negative if no information is available */
result = mktime(&curtime);
if (result == (time_t)-1) return(0);
return(result);
}
 
 
/* opens a zip file and provides the list of files in the archive.
returns a pointer to a ziplist (linked list) with all records, or NULL on error.
The ziplist is allocated automatically, and must be freed via zip_freelist. */
struct ziplist *zip_listfiles(FILE *fd) {
struct ziplist *reslist = NULL;
struct ziplist *newentry;
unsigned long entrysig;
unsigned short filenamelen, extrafieldlen, filecommentlen;
unsigned long compfilelen;
int centraldirectoryfound = 0;
unsigned int ux;
unsigned char hdrbuff[64];
 
rewind(fd); /* make sure the file cursor is at the very beginning of the file */
 
for (;;) { /* read entry after entry */
int x, eofflag;
long longbuff;
entrysig = 0;
eofflag = 0;
/* read the entry signature first */
for (x = 0; x < 32; x += 8) {
if ((longbuff = fgetc(fd)) == EOF) {
eofflag = 1;
break;
}
entrysig |= (longbuff << x);
}
if (eofflag != 0) break;
/* printf("sig: 0x%08x\n", entrysig); */
if (entrysig == 0x04034b50ul) { /* local file */
unsigned int generalpurposeflags;
/* read and parse the zip header */
fread(hdrbuff, 1, 26, fd);
/* read filename's length so I can allocate the proper amound of mem */
filenamelen = hdrbuff[23];
filenamelen <<= 8;
filenamelen |= hdrbuff[22];
/* create new entry and link it into the list */
newentry = calloc(sizeof(struct ziplist) + filenamelen, 1);
if (newentry == NULL) {
kitten_printf(2, 14, "libunzip"); /* "Out of memory! (%s)" */
puts("");
zip_freelist(&reslist);
break;
}
newentry->nextfile = reslist;
newentry->flags = 0;
reslist = newentry;
/* read further areas of the header, and fill zip entry */
generalpurposeflags = hdrbuff[3]; /* parse the general */
generalpurposeflags <<= 8; /* purpose flags and */
generalpurposeflags |= hdrbuff[2]; /* save them for later */
newentry->compmethod = hdrbuff[4] | (hdrbuff[5] << 8);
newentry->timestamp = dostime2unix(&hdrbuff[6]);
newentry->crc32 = 0;
for (x = 13; x >= 10; x--) {
newentry->crc32 <<= 8;
newentry->crc32 |= hdrbuff[x];
}
newentry->compressedfilelen = 0;
for (x = 17; x >= 14; x--) {
newentry->compressedfilelen <<= 8;
newentry->compressedfilelen |= hdrbuff[x];
}
newentry->filelen = 0;
for (x = 21; x >= 18; x--) {
newentry->filelen <<= 8;
newentry->filelen |= hdrbuff[x];
}
extrafieldlen = hdrbuff[25];
extrafieldlen <<= 8;
extrafieldlen |= hdrbuff[24];
/* printf("Filename len: %d / extrafield len: %d / compfile len: %ld / filelen: %ld\n", filenamelen, extrafieldlen, newentry->compressedfilelen, newentry->filelen); */
/* check general purpose flags */
if ((generalpurposeflags & 1) != 0) newentry->flags |= ZIP_FLAG_ENCRYPTED;
/* parse the filename */
for (ux = 0; ux < filenamelen; ux++) newentry->filename[ux] = fgetc(fd); /* store filename */
if (newentry->filename[filenamelen - 1] == '/') newentry->flags |= ZIP_FLAG_ISADIR; /* if filename ends with / it's a dir. Note that ZIP forbids the usage of '\' in ZIP paths anyway */
/* printf("Filename: %s (%ld bytes compressed)\n", newentry->filename, newentry->compressedfilelen); */
newentry->dataoffset = ftell(fd) + extrafieldlen;
/* skip rest of fields and data */
fseek(fd, (extrafieldlen + newentry->compressedfilelen), SEEK_CUR);
} else if (entrysig == 0x02014b50ul) { /* central directory */
centraldirectoryfound = 1;
/* parse header now */
fread(hdrbuff, 1, 42, fd);
filenamelen = hdrbuff[22] | (hdrbuff[23] << 8);
extrafieldlen = hdrbuff[24] | (hdrbuff[25] << 8);
filecommentlen = hdrbuff[26] | (hdrbuff[27] << 8);
compfilelen = 0;
for (x = 17; x >= 14; x--) {
compfilelen <<= 8;
compfilelen |= hdrbuff[x];
}
/* printf("central dir\n"); */
/* skip rest of fields and data */
fseek(fd, (filenamelen + extrafieldlen + compfilelen + filecommentlen), SEEK_CUR);
} else if (entrysig == 0x08074b50ul) { /* Data descriptor header */
/* no need to read the header we just have to skip it */
fseek(fd, 12, SEEK_CUR); /* the header is 3x4 bytes (CRC + compressed len + uncompressed len) */
} else { /* unknown sig */
kitten_printf(8, 1, entrysig); /* "unknown zip sig: 0x%08lx" */
puts("");
zip_freelist(&reslist);
break;
}
}
/* if we got no central directory record, the file is incomplete */
if (centraldirectoryfound == 0) zip_freelist(&reslist);
return(reslist);
}
 
 
 
/* unzips a file. zipfd points to the open zip file, curzipnode to the entry to extract, and fulldestfilename is the destination file where to unzip it. returns 0 on success, non-zero otherwise. */
int zip_unzip(FILE *zipfd, struct ziplist *curzipnode, const char *fulldestfilename) {
#define buffsize 32 * 1024l /* MUST be at least 32K */
FILE *filefd;
unsigned long cksum;
int extract_res;
unsigned char *buff;
struct utimbuf filetimestamp;
 
/* first of all, check we support the compression method */
switch (curzipnode->compmethod) {
case ZIP_METH_STORE:
case ZIP_METH_DEFLATE:
break;
default: /* unsupported compression method, sorry */
return(-1);
break;
}
 
/* open the dst file */
filefd = fopen(fulldestfilename, "wb");
if (filefd == NULL) return(-2); /* failed to open the dst file */
 
/* allocate buffers for data I/O */
buff = malloc(buffsize);
if (buff == NULL) {
fclose(filefd);
unlink(fulldestfilename); /* remove the failed file once it is closed */
return(-6);
}
 
if (fseek(zipfd, curzipnode->dataoffset, SEEK_SET) != 0) { /* set the reading position inside the zip file */
free(buff);
fclose(filefd);
unlink(fulldestfilename); /* remove the failed file once it is closed */
return(-7);
}
extract_res = -255;
 
cksum = crc32_init(); /* init the crc32 */
 
if (curzipnode->compmethod == 0) { /* if the file is stored, copy it over */
long i, toread;
extract_res = 0; /* assume we will succeed */
for (i = 0; i < curzipnode->filelen;) {
toread = curzipnode->filelen - i;
if (toread > buffsize) toread = buffsize;
if (fread(buff, toread, 1, zipfd) != 1) extract_res = -3; /* read a chunk of data */
crc32_feed(&cksum, buff, toread); /* update the crc32 checksum */
if (fwrite(buff, toread, 1, filefd) != 1) extract_res = -4; /* write data chunk to dst file */
i += toread;
}
} else if (curzipnode->compmethod == 8) { /* if the file is deflated, inflate it */
extract_res = inf(zipfd, filefd, buff, &cksum, curzipnode->compressedfilelen);
}
 
/* clean up memory, close the dst file and terminates crc32 */
free(buff);
fclose(filefd); /* close the dst file */
crc32_finish(&cksum);
 
/* printf("extract_res=%d / cksum_expected=%08lX / cksum_obtained=%08lX\n", extract_res, curzipnode->crc32, cksum); */
if (extract_res != 0) { /* was the extraction process successful? */
unlink(fulldestfilename); /* remove the failed file */
return(extract_res);
}
if (cksum != curzipnode->crc32) { /* is the crc32 ok after extraction? */
unlink(fulldestfilename); /* remove the failed file */
return(-9);
}
/* Set the timestamp of the new file to what was set in the zip file */
filetimestamp.actime = curzipnode->timestamp;
filetimestamp.modtime = curzipnode->timestamp;
utime(fulldestfilename, &filetimestamp);
return(0);
}
 
 
 
/* Call this to free a ziplist computed by zip_listfiles() */
void zip_freelist(struct ziplist **ziplist) {
struct ziplist *zipentrytobefreed;
while (*ziplist != NULL) { /* iterate through the linked list and free all nodes */
zipentrytobefreed = *ziplist;
*ziplist = zipentrytobefreed->nextfile;
/* free the node entry */
free(zipentrytobefreed);
}
*ziplist = NULL;
}
/pkg/tags/20220203/libunzip.h
0,0 → 1,38
/*
* This file is part of the FDNPKG project
* http://fdnpkg.sourceforge.net
*
* Copyright (C) 2012-2016 Mateusz Viste. All rights reserved.
*
* Simple library providing functions to unzip files from zip archives.
*/
 
 
#ifndef libunzip_sentinel
#define libunzip_sentinel
 
#include <time.h> /* required for the time_t definition */
 
#define ZIP_FLAG_ISADIR 1
#define ZIP_FLAG_ENCRYPTED 2
 
#define ZIP_METH_STORE 0
#define ZIP_METH_DEFLATE 8
 
struct ziplist {
long filelen;
long compressedfilelen;
unsigned long crc32;
long dataoffset; /* offset in the file where compressed data starts */
struct ziplist *nextfile;
time_t timestamp; /* the timestamp of the file */
short compmethod; /* compression method (ZIP_METH_xxx) */
unsigned char flags; /* see ZIP_FLAG_xxx above */
char filename[1]; /* must be last element (gets expanded at runtime) */
};
 
struct ziplist *zip_listfiles(FILE *fd);
int zip_unzip(FILE *zipfd, struct ziplist *curzipnode, const char *fulldestfilename);
void zip_freelist(struct ziplist **ziplist);
 
#endif
/pkg/tags/20220203/loadconf.c
0,0 → 1,158
/*
* This file is part of pkg (SvarDOS).
* Copyright (C) 2012-2021 Mateusz Viste
*/
 
#include <stdio.h> /* printf(), fclose(), fopen()... */
#include <string.h> /* strcasecmp() */
#include <stdlib.h> /* malloc(), free() */
 
#include "helpers.h" /* slash2backslash(), removeDoubleBackslashes()... */
#include "kprintf.h"
 
#include "loadconf.h"
 
 
void freeconf(struct customdirs **dirlist) {
struct customdirs *curpos;
/* free the linked list of custom dirs */
while (*dirlist != NULL) {
curpos = *dirlist;
*dirlist = (*dirlist)->next;
free(curpos);
}
}
 
 
static int checkfordoubledirlist(const struct customdirs *dirlist) {
struct customdirs *curpos;
for (; dirlist != NULL; dirlist = dirlist->next) {
for (curpos = dirlist->next; curpos != NULL; curpos = curpos->next) {
if (strcasecmp(curpos->name, dirlist->name) == 0) {
kitten_printf(7, 0, curpos->name); /* "ERROR: custom dir '%s' is listed twice!" */
puts("");
return(-1);
}
}
}
return(0);
}
 
 
/* validates dirlist entries: check that they are absolute paths and are not using restricted names */
static int validatedirlist(const struct customdirs *dirlist) {
for (; dirlist != NULL; dirlist = dirlist->next) {
/* the location must be at least 3 characters long to be a valid absolute path (like 'c:\')*/
if (strlen(dirlist->location) < 3) {
kitten_printf(7, 15, dirlist->name); /* "ERROR: custom dir '%s' is not a valid absolute path!" */
puts("");
return(-1);
}
/* is it a valid absolute path? should start with [a..Z]:\ */
if ((dirlist->location[1] != ':') ||
((dirlist->location[2] != '/') && (dirlist->location[2] != '\\')) ||
(((dirlist->location[0] < 'a') || (dirlist->location[0] > 'z')) && ((dirlist->location[0] < 'A') || (dirlist->location[0] > 'Z')))) {
kitten_printf(7, 15, dirlist->name); /* "ERROR: custom dir '%s' is not a valid absolute path!" */
puts("");
return(-1);
}
/* check for forbidden names */
if ((strcasecmp(dirlist->name, "appinfo") == 0) ||
(strcasecmp(dirlist->name, "bin") == 0) ||
(strcasecmp(dirlist->name, "doc") == 0) ||
(strcasecmp(dirlist->name, "help") == 0) ||
(strcasecmp(dirlist->name, "nls") == 0) ||
(strcasecmp(dirlist->name, "packages") == 0)) {
kitten_printf(7, 16, dirlist->name); /* "ERROR: custom dir '%s' is a reserved name!" */
puts("");
return(-1);
}
}
return(0);
}
 
 
/* add (and allocates) a new custom dir entry to dirlist. Returns 0 on success,
or non-zero on failure (failures happen on out of memory events). */
static int addnewdir(struct customdirs **dirlist, const char *name, const char *location) {
struct customdirs *newentry;
if (strlen(name) >= sizeof(newentry->name)) return(-2);
newentry = malloc(sizeof(struct customdirs) + strlen(location) + 1);
if (newentry == NULL) return(-1);
strcpy(newentry->name, name);
strcpy(newentry->location, location);
newentry->next = *dirlist;
*dirlist = newentry;
return(0);
}
 
 
int loadconf(const char *dosdir, struct customdirs **dirlist) {
FILE *fd;
char *value = NULL;
char token[512];
int nline = 0;
 
snprintf(token, sizeof(token), "%s\\cfg\\pkg.cfg", dosdir);
fd = fopen(token, "r");
if (fd == NULL) {
kitten_printf(7, 1, token); /* "ERROR: Could not open config file (%s)!" */
puts("");
return(-1);
}
 
*dirlist = NULL;
 
/* read the config file line by line */
while (freadtokval(fd, token, sizeof(token), &value, ' ') == 0) {
nline++;
 
/* skip comments and empty lines */
if ((token[0] == '#') || (token[0] == 0)) continue;
 
if ((value == NULL) || (value[0] == 0)) {
kitten_printf(7, 4, nline); /* "Warning: token with empty value on line #%d" */
puts("");
continue;
}
 
/* printf("token='%s' ; value = '%s'\n", token, value); */
if (strcasecmp(token, "DIR") == 0) { /* custom directory entry */
char *location = NULL;
int i;
/* find nearer space */
for (i = 0; (value[i] != ' ') && (value[i] != 0); i++);
if (value[i] == 0) {
kitten_printf(7, 11, nline); /* "Warning: Invalid 'DIR' directive found at line #%d" */
puts("");
continue;
}
value[i] = 0;
location = value + i + 1;
 
/* add the entry to the list */
slash2backslash(location);
removeDoubleBackslashes(location);
if (location[strlen(location) - 1] != '\\') strcat(location, "\\"); /* make sure to end dirs with a backslash */
if (addnewdir(dirlist, value, location) != 0) {
kitten_printf(2, 14, "addnewdir"); /* "Out of memory! (%s)" */
puts("");
freeconf(dirlist);
fclose(fd);
return(-1);
}
} else { /* unknown token */
kitten_printf(7, 8, token, nline); /* "Warning: Unknown token '%s' at line #%d" */
puts("");
}
}
fclose(fd);
 
/* perform some validations */
if ((checkfordoubledirlist(*dirlist) != 0) || (validatedirlist(*dirlist) != 0)) {
freeconf(dirlist);
return(-1);
}
 
return(0);
}
/pkg/tags/20220203/loadconf.h
0,0 → 1,23
/*
* This file is part of pkg.
*
* Copyright (C) 2012-2021 Mateusz Viste
*/
 
#ifndef loadrepolist_sentinel
#define loadrepolist_sentinel
 
struct customdirs {
struct customdirs *next;
char name[9];
char location[1]; /* extended at alloc time */
};
 
/* Loads the list of custom directories from the config file
* Returns 0 on success, or -1 on failure. */
int loadconf(const char *dosdir, struct customdirs **dirlist);
 
/* Free the memory allocated at configuration load. */
void freeconf(struct customdirs **dirlist);
 
#endif
/pkg/tags/20220203/lsm.c
0,0 → 1,33
/*
* This file is part of pkg (SvarDOS)
* Copyright (C) 2013-2021 Mateusz Viste
*/
 
#include <stdio.h> /* fopen, fclose... */
#include <string.h> /* strcasecmp() */
 
#include "helpers.h"
 
#include "lsm.h" /* include self for control */
 
 
/* Loads metadata from an LSM file. Returns 0 on success, non-zero on error. */
int readlsm(const char *filename, char *version, size_t version_maxlen) {
char linebuff[128];
char *valuestr;
FILE *fd;
/* reset fields to be read to empty values */
version[0] = 0;
/* open the file */
fd = fopen(filename, "rb");
if (fd == NULL) return(-1);
/* read the LSM file line by line */
 
while (freadtokval(fd, linebuff, sizeof(linebuff), &valuestr, ':') == 0) {
if (valuestr != NULL) {
if (strcasecmp(linebuff, "version") == 0) snprintf(version, version_maxlen, "%s", valuestr);
}
}
fclose(fd);
return(0);
}
/pkg/tags/20220203/lsm.h
0,0 → 1,10
/*
* This file is part of pkg (SvarDOS)
* Copyright (C) 2013-2021 Mateusz Viste
*/
 
#ifndef readlsm_h_sentinel
#define readlsm_h_sentinel
/* Loads metadata from an LSM file. Returns 0 on success, non-zero on error. */
int readlsm(const char *filename, char *version, size_t version_maxlen);
#endif
/pkg/tags/20220203/main.c
0,0 → 1,178
/*
* PKG - SvarDOS package installer
*
* PUBLISHED UNDER THE TERMS OF THE MIT LICENSE
*
* COPYRIGHT (C) 2016-2022 MATEUSZ VISTE, ALL RIGHTS RESERVED.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
 
 
#include <stdio.h> /* printf() */
#include <stdlib.h> /* malloc() and friends */
#include <string.h> /* strcasecmp() */
 
#include "svarlang.lib/svarlang.h"
#include "kprintf.h"
#include "libunzip.h"
#include "pkginst.h"
#include "pkgrem.h"
#include "showinst.h"
#include "unzip.h"
#include "version.h"
 
 
enum ACTIONTYPES {
ACTION_INSTALL,
ACTION_UPDATE,
ACTION_REMOVE,
ACTION_LISTFILES,
ACTION_LISTLOCAL,
ACTION_UNZIP,
ACTION_HELP
};
 
 
static int showhelp(void) {
puts("PKG ver " PVER " Copyright (C) " PDATE " Mateusz Viste");
puts("");
puts(svarlang_str(1, 0)); /* "PKG is the package installer for SvarDOS." */
puts("");
puts(svarlang_str(1, 20)); /* "Usage: pkg install package.zip */
puts(svarlang_str(1, 21)); /* " pkg update package.zip" */
puts(svarlang_str(1, 22)); /* " pkg remove package" */
puts(svarlang_str(1, 23)); /* " pkg listfiles package" */
puts(svarlang_str(1, 24)); /* " pkg listlocal [filter]" */
puts(svarlang_str(1, 27)); /* " pkg unzip file.zip" */
puts("");
puts(svarlang_str(1, 25)); /* "PKG is published under the MIT license." */
puts(svarlang_str(1, 26)); /* "It is configured through %DOSDIR%\CFG\PKG.CFG" */
return(1);
}
 
 
static enum ACTIONTYPES parsearg(int argc, char * const *argv) {
/* look for valid actions */
if ((argc == 3) && (strcasecmp(argv[1], "install") == 0)) {
return(ACTION_INSTALL);
} else if ((argc == 3) && (strcasecmp(argv[1], "update") == 0)) {
return(ACTION_UPDATE);
} else if ((argc == 3) && (strcasecmp(argv[1], "remove") == 0)) {
return(ACTION_REMOVE);
} else if ((argc == 3) && (strcasecmp(argv[1], "listfiles") == 0)) {
return(ACTION_LISTFILES);
} else if ((argc >= 2) && (argc <= 3) && (strcasecmp(argv[1], "listlocal") == 0)) {
return(ACTION_LISTLOCAL);
} else if ((argc == 3) && (strcasecmp(argv[1], "unzip") == 0)) {
return(ACTION_UNZIP);
} else {
return(ACTION_HELP);
}
}
 
 
static int pkginst(const char *file, int flags, const char *dosdir, const struct customdirs *dirlist) {
char pkgname[9];
int t, lastpathdelim = -1, lastdot = -1, res = 1;
struct ziplist *zipfileidx;
FILE *zipfilefd;
/* copy the filename into pkgname (without path elements and without extension) */
for (t = 0; file[t] != 0; t++) {
switch (file[t]) {
case '/':
case '\\':
lastpathdelim = t;
break;
case '.':
lastdot = t;
break;
}
}
if (lastdot <= lastpathdelim) lastdot = t; /* a dot before last path delimiters is not an extension prefix */
t = lastdot - (lastpathdelim + 1);
if (t + 1 > sizeof(pkgname)) {
puts(svarlang_str(3, 24)); /* "ERROR: package name too long" */
return(1);
}
memcpy(pkgname, file + lastpathdelim + 1, t);
pkgname[t] = 0;
/* prepare the zip file and install it */
zipfileidx = pkginstall_preparepackage(pkgname, file, flags, &zipfilefd, dosdir, dirlist);
if (zipfileidx != NULL) {
res = pkginstall_installpackage(pkgname, dosdir, dirlist, zipfileidx, zipfilefd);
zip_freelist(&zipfileidx);
}
 
fclose(zipfilefd);
return(res);
}
 
 
int main(int argc, char **argv) {
int res = 1;
enum ACTIONTYPES action;
const char *dosdir;
struct customdirs *dirlist;
 
svarlang_autoload("pkg"); /* NLS init */
 
action = parsearg(argc, argv);
if (action == ACTION_HELP) {
showhelp();
goto GAMEOVER;
}
 
/* read the DOSDIR environment variable */
dosdir = getenv("DOSDIR");
if (dosdir == NULL) {
puts(svarlang_str(2, 2)); /* "%DOSDIR% not set! You should make it point to the FreeDOS main directory." */
puts(svarlang_str(2, 3)); /* "Example: SET DOSDIR=C:\FDOS" */
goto GAMEOVER;
}
 
/* load configuration */
if (loadconf(dosdir, &dirlist) != 0) goto GAMEOVER;
 
switch (action) {
case ACTION_UPDATE:
case ACTION_INSTALL:
res = pkginst(argv[2], (action == ACTION_UPDATE)?PKGINST_UPDATE:0, dosdir, dirlist);
break;
case ACTION_REMOVE:
res = pkgrem(argv[2], dosdir);
break;
case ACTION_LISTFILES:
res = listfilesofpkg(argv[2], dosdir);
break;
case ACTION_LISTLOCAL:
res = showinstalledpkgs((argc == 3)?argv[2]:NULL, dosdir);
break;
case ACTION_UNZIP:
res = unzip(argv[2]);
break;
default:
res = showhelp();
break;
}
 
GAMEOVER:
if (res != 0) return(1);
return(0);
}
/pkg/tags/20220203/nls_utf8/pkg_de.txt
0,0 → 1,74
# Help Message
# FDNPKG language file
# Time-stamp: "2017-03-09 22:50:34 joerg"
#
# Language..: German
# Translator: Jörg Jenderek
# Version...: 0.99.4
 
 
#### Help ####
 
1.0:Dies ist der Paketmanager für SvarDOS.
1.20:Gebrauch: pkg install package.zip
1.21: pkg update package.zip
1.22: pkg remove package
1.23: pkg listfiles package
1.24: pkg listlocal [filter]
1.27: pkg unzip datei.zip
1.25:PKG is published under the MIT license.
1.26:It is configured through %DOSDIR%\CFG\PKG.CFG
 
### General stuff ####
 
2.2:%DOSDIR% nicht gesetzt! Sie sollte auf das SvarDOS-Hauptverzeichnis verweisen.
2.3:Beispiel: SET DOSDIR=C:\SVARDOS
2.14:Kein Speicher mehr! (%s)
 
#### Installing package ####
 
3.8:FEHLER: Ungültiges Zip-Archiv! Paket nicht installiert.
3.9:FEHLER: Paket enthält eine Datei, die bereits lokal existiert:
3.10:FEHLER: %s konnte nicht erstellt werden!
3.12:FEHLER: Paket enthält nicht die Datei %s! Kein gültiges FreeDOS-Paket.
3.18:Paket %s ist bereits installiert! Sie sollten die 'update' Aktion verwenden.
3.19:Paket %s installiert: %d Dateien extrahiert, %d Fehler.
3.20:FEHLER: Paket enthält eine verschlüsselte Datei:
3.23:FEHLER: Paket enthält einen ungültigen Dateinamen:
3.24:FEHLER: package name too long
 
#### Removing package ####
 
4.0:Paket %s ist nicht installiert, daher nicht entfernt.
4.3:Kein Speicher mehr! Konnte das Verzeichnis %s nicht speichern!
4.4:entferne %s
4.5:Paket %s wurde entfernt.
 
#### Searching package ####
 
5.0:Kein Paket entspricht der Suche.
 
#### Loading configuration ####
 
7.0:FEHLER: Repository '%s' wird zweimal aufgeführt!
7.1:FEHLER: Konfigurationsdatei '%s' konnte nicht geöffnet werden!
7.4:Warnung: Token mit leerem Wert in Zeile #%d
7.8:Warnung: Unbekanntes Token '%s' in Zeile #%d
7.11:Warnung: Ungültige 'DIR'-Richtlinie in Zeile #%d
7.15:FEHLER: spezielles Verzeichnis '%s' ist kein gültiger absoluter Pfad!
7.16:FEHLER: spezielles Verzeichnis '%s' ist ein reservierter Name!
 
#### Unziping package ####
 
8.1:unbekannte ZIP-Signatur: 0x%08lx
8.2:FEHLER: Paket enthält eine Datei mit nicht unterstützter Komprimierung (%d):
8.3:FEHLER beim Extrahieren von '%s' zu '%s'!
 
#### Handling the local list of installed packages ####
 
9.0:FEHLER: konnte nicht auf das Verzeichnis %s zugreifen.
9.1:FEHLER: Lokales Paket %s nicht gefunden.
 
# Local Variables:
# coding:cp850-dos
# End:
/pkg/tags/20220203/nls_utf8/pkg_dk.txt
0,0 → 1,68
#
# FDNPKG language file
#
# Language..: Danish
# Translator: Henrik Schick-Hansen
#
 
#### Help ####
 
1.0:Pakke administrator til SvarDOS.
1.20:Anvendelse: pkg install package.zip
1.21: pkg update package.zip
1.22: pkg remove package
1.23: pkg listfiles package
1.24: pkg listlocal [filter]
1.27: pkg unzip file.zip
1.25:PKG is published under the MIT license.
1.26:It is configured through %DOSDIR%\CFG\PKG.CFG
 
### General stuff ####
 
2.2:%DOSDIR% ikke sat! DOSDIR skal pege på SvarDOS hoved biblioteket.
2.3:Eksempel: SET DOSDIR=C:\SVARDOS
2.14:Hukommelse opbrugt! (%s)
 
#### Installing package ####
 
3.8:Fejl: Ugyldigt zip arkiv! Pakken blev ikke installeret.
3.9:Fejl: Pakken indeholder en fil som findes lokalt allerede:
3.10:Fejl: Kan ikke oprette %s!
3.12:Fejl: Pakken indeholder ikke filen %s! Er ikke en gyldig FreeDOS pakke.
3.18:Pakke %s er installeret allerede! Benyt 'update' handlingen i stedet.
3.19:Pakke %s installeret: %d filer udpakket, %d fejl.
3.20:Fejl: Pakken indeholder en krypteret fil:
3.23:ERROR: Package contains an invalid filename:
3.24:ERROR: package name too long
 
#### Removing package ####
 
4.0:Pakken %s er ikke installeret, og kan derfor ikke slettes.
4.3:Hukommelse opbrugt! Kan ikke gemme biblioteket %s!
4.4:sletter %s
4.5:Pakken %s er slettet.
 
#### Searching package ####
 
5.0:Ingen pakke passer med søgningen.
 
#### Loading configuration ####
 
7.0:Fejl: opbevaringsstedet '%s' er oplistet to gange!
7.1:Fejl: Kan ikke åbne opsætningsfilen '%s'!
7.4:Advarsel: tomt udtryk i linje #%d
7.8:Advarsel: Ukendt udtryk '%s' i linje #%d
7.11:Advarsel: Ugyldigt 'DIR' direktiv fundet i linje #%d
7.15:Fejl: tilpasset bib '%s' er ikke en gyldig og fuldstændig sti!
7.16:Fejl: tilpasset bib '%s' er et reserveret navn!
 
#### Unziping package ####
 
8.1:ukendt zip signatur: 0x%08x
8.2:Fejl: Pakkeindhold komprimeret med en ikke understøttet metode (%d):
8.3:Fejl under udpakning af '%s' til '%s'!
 
#### Handling the local list of installed packages ####
 
9.0:Fejl: Kan ikke få adgang til %s biblioteket.
9.1:Fejl: Lokal pakke %s ikke fundet.
/pkg/tags/20220203/nls_utf8/pkg_en.txt
0,0 → 1,76
#
# PKG language file
#
# Language..: English
# Translator: Mateusz Viste
#
 
#### Help ####
 
1.0:PKG is the package installer for SvarDOS.
1.20:Usage: pkg install package.zip
1.21: pkg update package.zip
1.22: pkg remove package
1.23: pkg listfiles package
1.24: pkg listlocal [filter]
1.27: pkg unzip file.zip
1.25:PKG is published under the MIT license.
1.26:It is configured through %DOSDIR%\CFG\PKG.CFG
 
### General stuff ####
 
2.2:%DOSDIR% not set! You should make it point to the SvarDOS main directory.
2.3:Example: SET DOSDIR=C:\SVARDOS
2.14:Out of memory! (%s)
 
#### Installing package ####
 
3.8:ERROR: Invalid zip archive! Package not installed.
3.9:ERROR: Package contains a file that already exists locally:
3.10:ERROR: Could not create %s!
3.12:ERROR: Package does not contain the %s file! Not a valid SvarDOS package.
3.18:Package %s is already installed! You might want to use the 'update' action.
3.19:Package %s installed: %d files extracted, %d errors.
3.20:ERROR: Package contains an encrypted file:
3.23:ERROR: Package contains an invalid filename:
3.24:ERROR: package name too long
 
#### Removing package ####
 
4.0:Package %s is not installed, so not removed.
4.3:Out of memory! Could not store directory %s!
4.4:removing %s
4.5:Package %s has been removed.
 
#### Searching package ####
 
5.0:No package matched the search.
 
#### Loading configuration ####
 
7.0:ERROR: custom dir '%s' is listed twice!
7.1:ERROR: Could not open config file '%s'!
7.4:Warning: token with empty value on line #%d
7.8:Warning: Unknown token '%s' at line #%d
7.11:Warning: Invalid 'DIR' directive found at line #%d
7.15:ERROR: custom dir '%s' is not a valid absolute path!
7.16:ERROR: custom dir '%s' is a reserved name!
 
#### Unziping package ####
 
8.1:unknown zip sig: 0x%08lx
8.2:ERROR: Package contains a file compressed with an unsupported method (%d):
8.3:ERROR: failed extracting '%s' to '%s'!
 
#### Handling the local list of installed packages ####
 
9.0:ERROR: Could not access directory %s
9.1:ERROR: Local package '%s' not found
 
#### unzip ####
 
10.0:OK
10.1:ERROR: Failed to open the archive file
10.2:ERROR: Invalid ZIP archive
10.3:ERROR: File already exists
10.4:ERROR: unzip failure (%d)
/pkg/tags/20220203/nls_utf8/pkg_fr.txt
0,0 → 1,68
#
# FDNPKG language file
#
# Language..: French
# Translator: anonymous
#
 
#### Help ####
 
1.0:PKG est le gestionnaire de paquets de SvarDOS.
1.20:Usage: pkg install package.zip
1.21: pkg update package.zip
1.22: pkg remove package
1.23: pkg listfiles package
1.24: pkg listlocal [filter]
1.27: pkg unzip fichier.zip
1.25:PKG est publié sous license MIT.
1.26:Cet outil est configurable via %DOSDIR%\CFG\PKG.CFG
 
### General stuff ####
 
2.2:%DOSDIR% non défini! Faites-le pointer vers le répertoire principal de SvarDOS.
2.3:Exemple : SET DOSDIR=C:\SVARDOS
2.14:Mémoire insuffisante! (%s)
 
#### Installing package ####
 
3.8:ERREUR: archive zip invalide! Le paquet n'a pas été installé.
3.9:ERREUR: le paquet contient un fichier qui existe déjà localement:
3.10:ERREUR: impossible de créer %s!
3.12:ERREUR: le paquet ne contient pas de fichier %s! Ce n'est pas un paquet SvarDOS valide.
3.18:Le paquet %s est déjà installé! Utilisez plutôt l'action "update".
3.19:Le paquet %s a été installé: %d fichiers extraits, %d erreurs.
3.20:ERREUR: le paquet contient un fichier crypté:
3.23:ERREUR: le paquet contient un nom de fichier invalide:
3.24:ERREUR: nom du paquet trop long
 
#### Removing package ####
 
4.0:Le paquet %s n'est pas installé, il n'a donc pas été supprimé.
4.3:Mémoire insuffisante! Impossible de mémoriser le répertoire %s!
4.4:effacement en cours: %s
4.5:Le paquet %s a été supprimé.
 
#### Searching package ####
 
5.0:Aucun paquet ne correspond à la recherche.
 
#### Loading configuration ####
 
7.0:ERREUR: le répertoire personalisé "%s" est listé deux fois!
7.1:ERREUR: échec de l'ouverture du fichier de configuration "%s"!
7.4:Attention: jeton avec une valeur vide sur la ligne #%d
7.8:Attention: jeton "%s" inconnu à la ligne #%d
7.11:Attention: directive "DIR" invalide trouvée à la ligne #%d
7.15:ERREUR: le répertoire personnalisé "%s" n'est pas un chemin absolu valide!
7.16:ERREUR: le répertoire personnalisé "%s" est un nom réservé!
 
#### Unziping package ####
 
8.1:signature zip inconnue: 0x%08lx
8.2:ERREUR: le paquet utilise une méthode de compression non supportée (%d):
8.3:ERREUR: échec lors de l'extraction de "%s" vers "%s"!
 
#### Handling the local list of installed packages ####
 
9.0:ERREUR: échec de l'accès au répertoire "%s"
9.1:ERREUR: le paquet local %s n'a pas été trouvé
/pkg/tags/20220203/nls_utf8/pkg_pl.txt
0,0 → 1,76
#
# PKG language file
#
# Language..: Polish
# Translator: Mateusz Viste
#
 
#### Help ####
 
1.0:Menadżer pakietów dla SvarDOS.
1.20:Użycie: pkg install pakiet.zip
1.21: pkg update pakiet.zip
1.22: pkg remove pakiet
1.23: pkg listfiles pakiet
1.24: pkg listlocal [filtr]
1.27: pkg unzip plik.zip
1.25:PKG jest opublikowany na licencji MIT.
1.26:Konfiguracja znajduje się w pliku %DOSDIR%\CFG\PKG.CFG
 
### General stuff ####
 
2.2:%DOSDIR% nie ustawione! Ustaw by wskazywało na katalog instalacji SvarDOS.
2.3:Przykład: SET DOSDIR=C:\SVARDOS
2.14:Brak pamięci! (%s)
 
#### Installing package ####
 
3.8:BŁĄD: Nieprawidłowe archiwum zip! Pakiet nie został zainstalowany.
3.9:BŁĄD: Pakiet zawiera plik który już istnieje lokalnie:
3.10:BŁĄD: Nie udało się stworzyć %s!
3.12:BŁĄD: Pakiet nie zawiera pliku %s! Nieprawidłowy pakiet SvarDOS.
3.18:Pakiet %s jest już zainstalowany! Zobacz akcję 'update'.
3.19:Pakiet %s został zainstalowany: rozpakowano %d plików, %d błędów.
3.20:BŁĄD: Pakiet zawiera zaszyfrowany plik:
3.23:BŁĄD: Pakiet zawiera plik o nieprawidłowej nazwie:
3.24:BŁĄD: Zbyt długa nazwa pakietu
 
#### Removing package ####
 
4.0:Pakiet %s nie jest zainstalowany, więc nie wykasowany.
4.3:Brak pamięci! Nie zapamiętano katalogu %s!
4.4:usuwanie %s
4.5:Pakiet %s został usunięty.
 
#### Searching package ####
 
5.0:Żaden pakiet nie pasuje do wyszukiwania.
 
#### Loading configuration ####
 
7.0:BŁĄD: repozytorium '%s' jest skonfigurowane dwa razy!
7.1:BŁĄD: nie zdołano otworzyć pliku konfiguracyjnego '%s'!
7.4:Uwaga: token z pustą wartością w linii #%d
7.8:Uwaga: Nieznany token '%s' w linii #%d
7.11:Uwaga: Nieprawidłowe polecenie 'DIR' w linii #%d
7.15:BŁĄD: katalog specjalny '%s' nie jest prawidłową ścieżką!
7.16:BŁĄD: katalog specjalny '%s' jest zarezerwowaną nazwą!
 
#### Unziping package ####
 
8.1:nieznana sygnatura zip: 0x%08lx
8.2:BŁĄD: Pakiet zawiera plik skompresowany nieznaną metodę (%d):
8.3:BŁĄD: rozpakowanie '%s' do '%s' nie powiodło się!
 
#### Handling the local list of installed packages ####
 
9.0:BŁĄD: Dostęp do katalogu %s nie powiódł się.
9.1:BŁĄD: Nie znaleziono lokalnego pakietu %s.
 
#### unzip ####
 
10.0:OK
10.1:BŁĄD: Otwarcie pliku archiwum nie powiodło się
10.2:BŁĄD: Nieprawidłowe archiwum ZIP
10.3:BŁĄD: Plik już istnieje
10.4:BŁĄD: błąd unzip (%d)
/pkg/tags/20220203/nls_utf8/pkg_si.txt
0,0 → 1,68
#
# PKG language file
#
# Language..: Slovene
# Translator: Matej Horvat (http://matejhorvat.si/)
# Updated...: 2016-12-12
 
#### Help ####
 
1.0:To je upravitelj paketov za SvarDOS.
1.20:Usage: pkg install package.zip
1.21: pkg update package.zip
1.22: pkg remove package
1.23: pkg listfiles package
1.24: pkg listlocal [filter]
1.27: pkg unzip file.zip
1.25:PKG is published under the MIT license.
1.26:It is configured through %DOSDIR%\CFG\PKG.CFG
 
### General stuff ####
 
2.0:Spremenljivka TEMP ni nastavljena! Kaže naj na imenik, kamor se da pisati.
2.3:Primer: SET DOSDIR=C:\SVARDOS
2.14:Ni dovolj spomina! (%s)
 
#### Installing package ####
 
3.8:NAPAKA: Neveljavna ZIP datoteka! Paketa ni mogoče namestiti.
3.9:NAPAKA: Paket vsebuje datoteko, ki že obstaja na tem računalniku:
3.10:NAPAKA: Ni mogoče ustvariti %s.
3.12:NAPAKA: Paket ne vsebuje datoteke %s; to ni veljaven FreeDOS paket.
3.18:Paket %s je že nameščen! Morda želite uporabiti dejavnost UPDATE.
3.19:Paket %s nameščen: %d datotek razširjenih, %d napak.
3.20:NAPAKA: paket vsebuje šifrirano datoteko:
3.23:NAPAKA: paket vsebuje neveljavno ime datoteke:
3.24:NAPAKA: package name too long
 
#### Removing package ####
 
4.0:Paket %s ni nameščen, zato ga ni mogoče odstraniti.
4.3:Ni dovolj spomina. Ni mogoče shraniti imenika %s!
4.4:odstranjujem %s
4.5:Paket %s odstranjen.
 
#### Searching package ####
 
5.0:Noben paket ne ustreza iskalnim zahtevam.
 
#### Loading configuration ####
 
7.0:NAPAKA: Zbirka %s je našteta dvakrat!
7.1:NAPAKA: Ni mogoče odpreti nastavitvene datoteke %s.
7.4:Warning: token with empty value on line #%d
7.8:Opozorilo: neznan ukaz "%s" v vrstici %d
7.11:Opozorilo: Neveljaven ukaz DIR v vrstici %d.
7.15:NAPAKA: custom dir '%s' is not a valid absolute path!
7.16:NAPAKA: custom dir '%s' is a reserved name!
 
#### Unziping package ####
 
8.1:Neznana vrsta datoteke ZIP: 0x%08x
8.2:NAPAKA: Paket vsebuje datoteko, ki je stisnjena z nepodprto metodo (%d):
8.3:NAPAKA med razširjanjem %s v %s!
 
#### Handling the local list of installed packages ####
 
9.0:NAPAKA: Dostop do imenika %s ni mogoč
9.1:NAPAKA: Ni mogoče najti lokalnega paketa %s
/pkg/tags/20220203/nls_utf8/pkg_tr.txt
0,0 → 1,68
#
# FDNPKG language file
#
# Language..: Turkish
# Translator: anonymous
#
 
#### Help ####
 
1.0:Bu, SvarDOS için ağ tabanlı bir paket yöneticisidir.
1.20:Usage: pkg install package.zip
1.21: pkg update package.zip
1.22: pkg remove package
1.23: pkg listfiles package
1.24: pkg listlocal [filter]
1.27: pkg unzip file.zip
1.25:PKG is published under the MIT license.
1.26:It is configured through %DOSDIR%\CFG\PKG.CFG
 
### General stuff ####
 
2.2:%DOSDIR% ayarlanmamış! Onun SvarDOS ana dizinine işaret etmesi gerekir.
2.3:Örnek: SET DOSDIR=C:\SVARDOS
2.14:Bellek yetersiz! (%s)
 
#### Installing package ####
 
3.8:HATA: Geçersiz zip arşivi! Paket kurulmadı.
3.9:HATA: Paket zaten yerel olarak mevcut olan bir dosya içeriyor:
3.10:HATA: %s oluşturulamadı %s!
3.12:HATA: Paket %s dosyasını içermiyor! Geçerli bir SvarDOS paketi değil.
3.18:%s paketi zaten kuruludur! Güncelleme eylemini yapabilirsiniz.
3.19:%s paketi kuruldu: %d dosya çıkarıldı, %d hata.
3.20:HATA: paket şifreli bir dosya içermektedir:
3.23:HATA: paket geçersiz bir dosya ismi içermektedir:
3.24:HATA: package name too long
 
#### Removing package ####
 
4.0:%s paketi kurulu değildir, dolayısıyla kaldırılmamıştır.
4.3:Yetersiz bellek! %s dizini kaydedilemedi!
4.4:%s kaldırılıyor
4.5:%s paketi kaldırıldı.
 
#### Searching package ####
 
5.0:Hiçbir paket aramayla eşleşmedi.
 
#### Loading configuration ####
 
7.0:HATA: '%s' deposu iki kez listelenmiş!
7.1:HATA: '%s' yapılandırma dosyası açılamadı!
7.4:İkaz: #%d satırında boş değerli bir belirteç
7.8:İkaz: #%d satırında bilinmeyen '%s' belirteci
7.11:İkaz: #%d satırında geçersiz 'DIR' yönergesi bulundu
7.15:HATA: özel dizin '%s' geçerli bir mutlak yol değildir!
7.16:HATA: özel dizin '%s' ayrılmış bir isimdir!
 
#### Unziping package ####
 
8.1:bilinmeyen zip imzası: 0x%08lx
8.2:HATA: Paket desteklenmeyen metotla sıkıştırılmış dosya içeriyor (%d):
8.3:'%s' unsurunun to '%s' konumuna çıkarılması sırasında hata!
 
#### Handling the local list of installed packages ####
 
9.0:Hata: %s dizinine erişilemedi.
9.1:Hata: %s yerel paketi bulunamadı.
/pkg/tags/20220203/pkg.lsm
0,0 → 1,2
version: 20220203
description: SvarDOS package manager installs, removes and updates packages
/pkg/tags/20220203/pkginst.c
0,0 → 1,266
/*
* This file is part of pkg (SvarDOS)
* Copyright (C) 2012-2022 Mateusz Viste
*/
 
#include <ctype.h> /* toupper() */
#include <stdio.h>
#include <stdlib.h> /* system() */
#include <string.h> /* strcpy() */
#include <unistd.h> /* read() */
#include <sys/types.h> /* struct utimbuf */
 
#include "helpers.h" /* slash2backslash(), strtolower() */
#include "fileexst.h"
#include "kprintf.h"
#include "libunzip.h" /* zip_listfiles()... */
#include "showinst.h" /* pkg_loadflist() */
#include "svarlang.lib\svarlang.h"
 
#include "pkginst.h" /* include self for control */
 
 
/* validate a filename (8+3, no weird characters, etc). returns 0 on success,
* nonzero otherwise. */
static int validfilename(const char *fname) {
int i, i2;
char *validchars = "!#$%&'()-@^_`{}~";
int elemlen = 0;
int elemmaxlen = 8; /* switches from 8 to 3 depending wheter I am analyzing
a filename or an extension */
/* look for invalid chars in the entire string, and check the length of the
* element at the same time */
for (i = 0; fname[i] != 0; i++) {
/* director separators are threated specially */
if (fname[i] == '\\') {
elemlen = 0;
elemmaxlen = 8;
continue;
}
/* '.' switches the check into extension mode */
if (fname[i] == '.') {
if (elemlen == 0) return(-1); /* a file must have a base name */
if (elemmaxlen == 3) return(-2); /* a file cannot have two extensions */
elemlen = 0;
elemmaxlen = 3;
continue;
}
/* check that the element is not too long */
if (++elemlen > elemmaxlen) return(-3);
/* look for valid characters */
if ((fname[i] >= 'a') && (fname[i] <= 'z')) continue;
if ((fname[i] >= 'A') && (fname[i] <= 'Z')) continue;
if ((fname[i] >= '0') && (fname[i] <= '9')) continue;
if ((fname[i] & 128) != 0) continue; /* high bytes are okay (NLS) */
/* look for other valid characters */
for (i2 = 0; validchars[i2] != 0; i2++) {
if (fname[i] == validchars[i2]) break;
}
if (validchars[i2] != 0) continue;
/* if we are here, then the character is invalid */
return(-4);
}
/* all checks passed */
return(0);
}
 
 
/* returns 0 if pkgname is not installed, non-zero otherwise */
int is_package_installed(const char *pkgname, const char *dosdir) {
char fname[512];
sprintf(fname, "%s\\packages\\%s.lst", dosdir, pkgname);
return(fileexists(fname)); /* file exists -> package is installed */
}
 
 
/* checks that pkgname is NOT installed. return 0 on success, non-zero otherwise. */
static int validate_package_not_installed(const char *pkgname, const char *dosdir) {
if (is_package_installed(pkgname, dosdir) != 0) {
kitten_printf(3, 18, pkgname); /* "Package %s is already installed! You might want to use the 'update' action." */
puts("");
return(-1);
}
return(0);
}
 
 
/* find a filename in a flist linked list, and returns a pointer to it */
static struct flist_t *findfileinlist(struct flist_t *flist, const char *fname) {
while (flist != NULL) {
if (strcasecmp(flist->fname, fname) == 0) return(flist);
flist = flist->next;
}
return(NULL);
}
 
 
/* prepare a package for installation. this is mandatory before actually installing it!
* returns a pointer to the zip file's index on success, NULL on failure. the **zipfd pointer is updated with a file descriptor to the open zip file to install. */
struct ziplist *pkginstall_preparepackage(const char *pkgname, const char *zipfile, int flags, FILE **zipfd, const char *dosdir, const struct customdirs *dirlist) {
char fname[256];
char appinfofile[256];
int appinfopresence;
char *shortfile;
struct ziplist *ziplinkedlist = NULL, *curzipnode, *prevzipnode;
struct flist_t *flist = NULL;
 
sprintf(appinfofile, "appinfo\\%s.lsm", pkgname); /* Prepare the appinfo/xxxx.lsm filename string for later use */
 
/* check if not already installed, if already here, print a message "you might want to use update instead"
* of course this must not be done if we are in the process of upgrading said package */
if (((flags & PKGINST_UPDATE) == 0) && (validate_package_not_installed(pkgname, dosdir) != 0)) {
return(NULL);
}
 
/* Now let's check the content of the zip file */
 
*zipfd = fopen(zipfile, "rb");
if (*zipfd == NULL) {
puts(svarlang_str(3, 8)); /* "ERROR: Invalid zip archive! Package not installed." */
goto RAII;
}
ziplinkedlist = zip_listfiles(*zipfd);
if (ziplinkedlist == NULL) {
puts(svarlang_str(3, 8)); /* "ERROR: Invalid zip archive! Package not installed." */
goto RAII;
}
/* if updating, load the list of files belonging to the current package */
if ((flags & PKGINST_UPDATE) != 0) {
flist = pkg_loadflist(pkgname, dosdir);
}
/* Verify that there's no collision with existing local files, look for the appinfo presence */
appinfopresence = 0;
prevzipnode = NULL;
for (curzipnode = ziplinkedlist; curzipnode != NULL;) {
/* change all slashes to backslashes, and switch into all-lowercase */
slash2backslash(curzipnode->filename);
strtolower(curzipnode->filename);
/* remove 'directory' ZIP entries to avoid false alerts about directory already existing */
if ((curzipnode->flags & ZIP_FLAG_ISADIR) != 0) {
curzipnode->filename[0] = 0; /* mark it "empty", will be removed in a short moment */
}
/* is it a "link file"? skip it - link files are no longer supported */
if (fdnpkg_strcasestr(curzipnode->filename, "links\\") == curzipnode->filename) {
curzipnode->filename[0] = 0; /* in fact, I just mark the file as 'empty' on the filename - see later below */
}
 
if (curzipnode->filename[0] == 0) { /* ignore empty filenames (maybe it was empty originally, or has been emptied because it's a dropped source or link) */
if (prevzipnode == NULL) { /* take the item out of the list */
ziplinkedlist = curzipnode->nextfile;
free(curzipnode); /* free the item */
curzipnode = ziplinkedlist;
} else {
prevzipnode->nextfile = curzipnode->nextfile;
free(curzipnode); /* free the item */
curzipnode = prevzipnode->nextfile;
}
continue; /* go to the next item */
}
/* validate that the file has a valid filename (8+3, no shady chars...) */
if (validfilename(curzipnode->filename) != 0) {
puts(svarlang_str(3, 23)); /* "ERROR: Package contains an invalid filename:" */
printf(" %s\n", curzipnode->filename);
goto RAII_ERR;
}
/* look out for collisions with already existing files (unless we are
* updating the package and the local file belongs to it */
shortfile = computelocalpath(curzipnode->filename, fname, dosdir, dirlist);
strcat(fname, shortfile);
if ((findfileinlist(flist, fname) == NULL) && (fileexists(fname) != 0)) {
puts(svarlang_str(3, 9)); /* "ERROR: Package contains a file that already exists locally:" */
printf(" %s\n", fname);
goto RAII_ERR;
}
/* abort if any entry is encrypted */
if ((curzipnode->flags & ZIP_FLAG_ENCRYPTED) != 0) {
puts(svarlang_str(3, 20)); /* "ERROR: Package contains an encrypted file:" */
printf(" %s\n", curzipnode->filename);
goto RAII_ERR;
}
/* abort if any file is compressed with an unsupported method */
if ((curzipnode->compmethod != ZIP_METH_STORE) && (curzipnode->compmethod != ZIP_METH_DEFLATE)) { /* unsupported compression method */
kitten_printf(8, 2, curzipnode->compmethod); /* "ERROR: Package contains a file compressed with an unsupported method (%d):" */
puts("");
printf(" %s\n", curzipnode->filename);
goto RAII_ERR;
}
if (strcmp(curzipnode->filename, appinfofile) == 0) appinfopresence = 1;
prevzipnode = curzipnode;
curzipnode = curzipnode->nextfile;
}
/* if appinfo file not found, this is not a real FreeDOS package */
if (appinfopresence != 1) {
kitten_printf(3, 12, appinfofile); /* "ERROR: Package do not contain the %s file! Not a valid SvarDOS package." */
puts("");
goto RAII_ERR;
}
 
goto RAII;
 
RAII_ERR:
zip_freelist(&ziplinkedlist);
ziplinkedlist = NULL;
if ((zipfd != NULL) && (*zipfd != NULL)) {
fclose(*zipfd);
*zipfd = NULL;
}
 
RAII:
pkg_freeflist(flist);
return(ziplinkedlist);
}
 
 
/* install a package that has been prepared already. returns 0 on success,
* or a negative value on error, or a positive value on warning */
int pkginstall_installpackage(const char *pkgname, const char *dosdir, const struct customdirs *dirlist, struct ziplist *ziplinkedlist, FILE *zipfd) {
char buff[256];
char fulldestfilename[256];
char packageslst[32];
char *shortfile;
long filesextractedsuccess = 0, filesextractedfailure = 0;
struct ziplist *curzipnode;
FILE *lstfd;
 
sprintf(packageslst, "packages\\%s.lst", pkgname); /* Prepare the packages/xxxx.lst filename string for later use */
 
/* create the %DOSDIR%/packages directory, just in case it doesn't exist yet */
sprintf(buff, "%s\\packages\\", dosdir);
mkpath(buff);
 
/* open the lst file */
sprintf(buff, "%s\\%s", dosdir, packageslst);
lstfd = fopen(buff, "wb"); /* opening it in binary mode, because I like to have control over line terminators (CR/LF) */
if (lstfd == NULL) {
kitten_printf(3, 10, buff); /* "ERROR: Could not create %s!" */
puts("");
return(-2);
}
 
/* write list of files in zip into the lst, and create the directories structure */
for (curzipnode = ziplinkedlist; curzipnode != NULL; curzipnode = curzipnode->nextfile) {
int unzip_result;
if ((curzipnode->flags & ZIP_FLAG_ISADIR) != 0) continue; /* skip directories */
shortfile = computelocalpath(curzipnode->filename, buff, dosdir, dirlist); /* substitute paths to custom dirs */
/* log the filename to packages\pkg.lst */
fprintf(lstfd, "%s%s\r\n", buff, shortfile);
/* create the path, just in case it doesn't exist yet */
mkpath(buff);
sprintf(fulldestfilename, "%s%s", buff, shortfile);
/* Now unzip the file */
unzip_result = zip_unzip(zipfd, curzipnode, fulldestfilename);
if (unzip_result != 0) {
kitten_printf(8, 3, curzipnode->filename, fulldestfilename); /* "ERROR: failed extracting '%s' to '%s'!" */
printf(" [%d]\n", unzip_result);
filesextractedfailure += 1;
} else {
printf(" %s -> %s\n", curzipnode->filename, buff);
filesextractedsuccess += 1;
}
}
fclose(lstfd);
 
kitten_printf(3, 19, pkgname, filesextractedsuccess, filesextractedfailure); /* "Package %s installed: %ld files extracted, %ld errors." */
puts("");
return(filesextractedfailure);
}
/pkg/tags/20220203/pkginst.h
0,0 → 1,17
/*
* This file is part of SvarDOS
* Copyright (C) 2012-2021 Mateusz Viste
*/
 
#ifndef pkginst_sentinel
#define pkginst_sentinel
 
#include "loadconf.h" /* required for struct customdirs */
 
#define PKGINST_UPDATE 2
 
int is_package_installed(const char *pkgname, const char *dosdir);
struct ziplist *pkginstall_preparepackage(const char *pkgname, const char *localfile, int flags, FILE **zipfd, const char *dosdir, const struct customdirs *dirlist);
int pkginstall_installpackage(const char *pkgname, const char *dosdir, const struct customdirs *dirlist, struct ziplist *ziplinkedlist, FILE *zipfd);
 
#endif
/pkg/tags/20220203/pkgrem.c
0,0 → 1,142
/*
* This file is part of the pkg (SvarDOS) project.
* Copyright (C) Mateusz Viste 2012-2022
*/
 
#include <ctype.h> /* toupper() */
#include <stdio.h>
#include <string.h> /* strlen() */
#include <stdlib.h> /* free() */
#include <unistd.h> /* rmdir(), unlink() */
#include <direct.h> /* watcom needs this for the rmdir() prototype */
 
#include "helpers.h" /* slash2backslash() */
#include "kprintf.h"
 
#include "pkgrem.h"
 
 
struct dirliststruct {
struct dirliststruct *next;
char dirname[2]; /* this must be the last item in the structure */
};
 
 
/* adds a directory to dirlist, if not already present */
static struct dirliststruct *rememberdir(struct dirliststruct *dirlist, const char *path) {
struct dirliststruct *res;
/* if already present, do nothing */
for (res = dirlist; res != NULL; res = res->next) {
if (strcasecmp(res->dirname, path) == 0) return(dirlist);
}
/* not in the list yet - add it */
res = malloc(sizeof(struct dirliststruct) + strlen(path));
if (res == NULL) { /* out of memory */
kitten_printf(4, 3, path); /* "Out of memory! Could not store directory %s!" */
puts("");
return(NULL);
}
strcpy(res->dirname, path);
res->next = dirlist;
return(res);
}
 
 
/* explode a path into subdirectories, and remember each one inside dirlist */
static struct dirliststruct *rememberpath(struct dirliststruct *dirlist, char *path) {
int x, gameover = 0;
/* iterate on the path, and add each subdirectory */
for (x = 0;; x++) {
switch (path[x]) {
case 0:
gameover = 1;
case '/':
case '\\':
path[x] = 0;
dirlist = rememberdir(dirlist, path);
path[x] = '\\';
}
if (gameover != 0) break;
}
return(dirlist);
}
 
 
/* removes a package from the system. Returns 0 on success, non-zero otherwise */
int pkgrem(const char *pkgname, const char *dosdir) {
char fpath[256];
char buff[256];
FILE *flist;
int lastdirsep;
struct dirliststruct *dirlist = NULL; /* used to remember directories to remove */
 
/* open the file %DOSDIR%\packages\pkgname.lst */
sprintf(fpath, "%s\\packages\\%s.lst", dosdir, pkgname);
flist = fopen(fpath, "rb");
if (flist == NULL) {
kitten_printf(4, 0, pkgname); /* "Package %s is not installed, so not removed." */
puts("");
return(-1);
}
 
/* remove all files/folders listed in pkgname.lst but NOT pkgname.lst */
while (freadtokval(flist, buff, sizeof(buff), NULL, 0) == 0) {
int x;
slash2backslash(buff); /* change all slash to backslash */
if (buff[0] == 0) continue; /* skip empty lines */
 
/* remember the path part for removal later */
lastdirsep = -1;
for (x = 1; buff[x] != 0; x++) {
if ((buff[x] == '\\') && (buff[x - 1] != ':')) lastdirsep = x;
}
if (lastdirsep > 0) {
buff[lastdirsep] = 0;
dirlist = rememberpath(dirlist, buff);
buff[lastdirsep] = '\\';
}
 
/* if it's a directory, skip it */
if (buff[strlen(buff) - 1] == '\\') continue;
 
/* do not delete pkgname.lst at this point - I am using it (will be deleted later) */
if (strcasecmp(buff, fpath) == 0) continue;
 
/* remove it */
kitten_printf(4, 4, buff); /* "removing %s" */
puts("");
unlink(buff);
}
 
/* close the lst file */
fclose(flist);
 
/* iterate over dirlist and remove directories if empty, from longest to shortest */
while (dirlist != NULL) {
struct dirliststruct *dirlistpos, *previousdir;
/* find the longest path, and put it on top */
previousdir = dirlist;
for (dirlistpos = dirlist->next; dirlistpos != NULL; dirlistpos = dirlistpos->next) {
if (strlen(dirlistpos->dirname) > strlen(dirlist->dirname)) {
previousdir->next = dirlistpos->next;
dirlistpos->next = dirlist;
dirlist = dirlistpos;
dirlistpos = previousdir;
} else {
previousdir = dirlistpos;
}
}
/* printf("RMDIR %s\n", dirlist->dirname); */
rmdir(dirlist->dirname);
/* free the allocated memory for this entry */
dirlistpos = dirlist;
dirlist = dirlistpos->next;
free(dirlistpos);
}
 
/* remove the lst file */
unlink(fpath);
kitten_printf(4, 5, pkgname); /* "Package %s has been removed." */
puts("");
return(0);
}
/pkg/tags/20220203/pkgrem.h
0,0 → 1,9
/*
* This file is part of the SvarDOS project.
* Copyright (C) Mateusz Viste 2012-2021
*/
 
#ifndef pkgrem_sentinel
#define pkgrem_sentinel
int pkgrem(const char *pkgname, const char *dosdir);
#endif
/pkg/tags/20220203/showinst.c
0,0 → 1,119
/*
* This file is part of PKG (SvarDOS)
* Copyright (C) 2013-2022 Mateusz Viste
*/
 
#include <stdio.h>
#include <ctype.h> /* tolower() */
#include <stdlib.h> /* atoi(), qsort() - not using it after all, redefining it manually later */
#include <string.h> /* strlen() */
#include <sys/types.h>
#include <direct.h> /* opendir() and friends */
 
#include "helpers.h" /* fdnpkg_strcasestr(), slash2backslash()... */
#include "kprintf.h"
#include "libunzip.h" /* zip_freelist()... */
#include "lsm.h"
#include "svarlang.lib\svarlang.h"
 
#include "showinst.h" /* include self for control */
 
 
int showinstalledpkgs(const char *filterstr, const char *dosdir) {
DIR *dp;
struct dirent *ep;
char buff[256];
char ver[16];
int matchfound = 0;
 
sprintf(buff, "%s\\packages", dosdir);
dp = opendir(buff);
if (dp == NULL) {
kitten_printf(9, 0, buff); /* "ERROR: Could not access directory %s" */
puts("");
return(-1);
}
 
while ((ep = readdir(dp)) != NULL) { /* readdir() result must never be freed (statically allocated) */
int tlen = strlen(ep->d_name);
if (ep->d_name[0] == '.') continue; /* ignore '.', '..', and hidden directories */
if (tlen < 4) continue; /* files must be at least 5 bytes long ("x.lst") */
if (strcasecmp(ep->d_name + tlen - 4, ".lst") != 0) continue; /* if not an .lst file, skip it silently */
ep->d_name[tlen - 4] = 0; /* trim out the ".lst" suffix */
 
if (filterstr != NULL) {
if (fdnpkg_strcasestr(ep->d_name, filterstr) == NULL) continue; /* if it's not matching the non-NULL filter, skip it */
}
 
/* load the metadata from %DOSDIR\APPINFO\*.lsm */
sprintf(buff, "%s\\appinfo\\%s.lsm", dosdir, ep->d_name);
readlsm(buff, ver, sizeof(ver));
 
printf("%s %s", ep->d_name, ver);
puts("");
matchfound = 1;
}
if (matchfound == 0) puts(svarlang_str(5, 0)); /* "No package matched the search." */
 
closedir(dp);
return(0);
}
 
 
/* frees a linked list of filenames */
void pkg_freeflist(struct flist_t *flist) {
while (flist != NULL) {
struct flist_t *victim = flist;
flist = flist->next;
free(victim);
}
}
 
 
/* returns a linked list of the files that belong to package pkgname */
struct flist_t *pkg_loadflist(const char *pkgname, const char *dosdir) {
struct flist_t *res = NULL, *newnode;
FILE *fd;
char buff[256];
 
sprintf(buff, "%s\\packages\\%s.lst", dosdir, pkgname);
fd = fopen(buff, "rb");
if (fd == NULL) {
kitten_printf(9, 1, pkgname); /* "ERROR: Local package '%s' not found." */
puts("");
return(NULL);
}
/* iterate through all lines of the file */
while (freadtokval(fd, buff, sizeof(buff), NULL, 0) == 0) {
slash2backslash(buff); /* change all / to \ */
if (buff[0] == 0) continue; /* skip empty lines */
if (buff[strlen(buff) - 1] == '\\') continue; /* skip directories */
/* add the new node to the result */
newnode = malloc(sizeof(struct flist_t) + strlen(buff));
if (newnode == NULL) {
kitten_printf(2, 14, "malloc failure"); /* "Out of memory! (%s)" */
continue;
}
newnode->next = res;
strcpy(newnode->fname, buff);
res = newnode;
}
fclose(fd);
return(res);
}
 
 
/* Prints files owned by a package */
int listfilesofpkg(const char *pkgname, const char *dosdir) {
struct flist_t *flist, *flist_ptr;
/* load the list of files belonging to pkgname */
flist = pkg_loadflist(pkgname, dosdir);
if (flist == NULL) return(-1);
/* display each filename on screen */
for (flist_ptr = flist; flist_ptr != NULL; flist_ptr = flist_ptr->next) {
puts(flist_ptr->fname);
}
/* free the list of files */
pkg_freeflist(flist);
return(0);
}
/pkg/tags/20220203/showinst.h
0,0 → 1,18
/*
* This file is part of pkg (SvarDOS)
* Copyright (C) 2013-2021 Mateusz Viste
*/
 
#ifndef showinst_h_sentinel
#define showinst_h_sentinel
 
struct flist_t {
struct flist_t *next;
char fname[1]; /* this must be the last item in the structure, it will be expanded to fit the filename */
};
 
void pkg_freeflist(struct flist_t *flist);
struct flist_t *pkg_loadflist(const char *pkgname, const char *dosdir);
int showinstalledpkgs(const char *filterstr, const char *dosdir);
int listfilesofpkg(const char *pkgname, const char *dosdir);
#endif
/pkg/tags/20220203/svarlang.lib
0,0 → 1,0
link ../../svarlang.lib
Property changes:
Added: svn:special
+*
\ No newline at end of property
/pkg/tags/20220203/trim.c
0,0 → 1,35
/*
* trims any space, tab, cr or lf
* Copyright (C) 2012-2021 Mateusz Viste
*/
 
#include "trim.h"
 
void trim(char *str) {
int x, y, firstchar = -1, lastchar = -1;
 
/* find out first and last non-whitespace char */
for (x = 0; str[x] != 0; x++) {
switch (str[x]) {
case ' ':
case '\t':
case '\n':
case '\r':
break;
default:
if (firstchar < 0) firstchar = x;
lastchar = x;
break;
}
}
 
/* right trim */
str[lastchar + 1] = 0;
 
/* left trim (shift to the left ) */
if (firstchar > 0) {
y = 0;
for (x = firstchar; str[x] != 0; x++) str[y++] = str[x];
str[y] = 0;
}
}
/pkg/tags/20220203/trim.h
0,0 → 1,11
/*
* trims any space, tab, cr or lf
* Copyright (C) 2012-2021 Mateusz Viste
*/
 
#ifndef trim_sentinel
#define trim_sentinel
 
void trim(char *str);
 
#endif
/pkg/tags/20220203/unzip.c
0,0 → 1,69
/*
* simple unzip tool that unzips the content of a zip archive to current directory
* returns 0 on success
*
* this file is part of pkg (SvarDOS)
* copyright (C) 2021-2022 Mateusz Viste
*/
 
#include <stdio.h>
 
#include "fileexst.h"
#include "helpers.h"
#include "kprintf.h"
#include "libunzip.h"
#include "svarlang.lib\svarlang.h"
 
#include "unzip.h"
 
 
int unzip(const char *zipfile) {
struct ziplist *zlist, *znode;
FILE *fd;
int r = 0;
 
fd = fopen(zipfile, "rb");
if (fd == NULL) {
puts(svarlang_str(10, 1)); /* "ERROR: Failed to open the archive file" */
return(1);
}
 
zlist = zip_listfiles(fd);
if (zlist == NULL) {
puts(svarlang_str(10, 2)); /* "ERROR: Invalid ZIP archive" */
fclose(fd);
return(-1);
}
 
/* examine the list of zipped files - make sure that no file currently
* exists and that files are neither encrypted nor compressed with an
* unsupported method */
for (znode = zlist; znode != NULL; znode = znode->nextfile) {
int zres;
/* convert slash to backslash, print filename and create the directories path */
slash2backslash(znode->filename);
printf("%s ", znode->filename);
mkpath(znode->filename);
/* if a dir, we good already */
if (znode->flags == ZIP_FLAG_ISADIR) goto OK;
/* file already exists? */
if (fileexists(znode->filename) != 0) {
puts(svarlang_str(10, 3)); /* "ERROR: File already exists" */
r = 1;
continue;
}
/* uncompress */
zres = zip_unzip(fd, znode, znode->filename);
if (zres != 0) {
kitten_printf(10, 4, "ERROR: unzip failure (%d)", zres);
puts("");
continue;
}
OK:
puts(svarlang_str(10, 0)); /* "OK" */
}
 
zip_freelist(&zlist);
fclose(fd);
return(r);
}
/pkg/tags/20220203/unzip.h
0,0 → 1,14
/*
* simple unzip tool that unzips the content of a zip archive to current directory
* returns 0 on success
*
* this file is part of pkg (SvarDOS)
* copyright (C) 2021 Mateusz Viste
*/
 
#ifndef unzip_h
#define unzip_h
 
int unzip(const char *zipfile);
 
#endif
/pkg/tags/20220203/version.h
0,0 → 1,10
/*
*/
 
#ifndef COMMON_H_SENTINEL
#define COMMON_H_SENTINEL
 
#define PVER "20220203"
#define PDATE "2012-2022"
 
#endif
/pkg/tags/20220203/zlib/readme.txt
0,0 → 1,5
This directory contains the zlib v1.2.8 library, precompiled with Open Watcom
ver 1.9, for compact and large models.
 
Compiled with the -DNO_GZIP and -DNOBYFOUR definitions, to save a few
kilobytes of unnecessary bloat.
/pkg/tags/20220203/zlib/zconf.h
0,0 → 1,511
/* zconf.h -- configuration of the zlib compression library
* Copyright (C) 1995-2013 Jean-loup Gailly.
* For conditions of distribution and use, see copyright notice in zlib.h
*/
 
/* @(#) $Id$ */
 
#ifndef ZCONF_H
#define ZCONF_H
 
/*
* If you *really* need a unique prefix for all types and library functions,
* compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
* Even better than compiling with -DZ_PREFIX would be to use configure to set
* this permanently in zconf.h using "./configure --zprefix".
*/
#ifdef Z_PREFIX /* may be set to #if 1 by ./configure */
# define Z_PREFIX_SET
 
/* all linked symbols */
# define _dist_code z__dist_code
# define _length_code z__length_code
# define _tr_align z__tr_align
# define _tr_flush_bits z__tr_flush_bits
# define _tr_flush_block z__tr_flush_block
# define _tr_init z__tr_init
# define _tr_stored_block z__tr_stored_block
# define _tr_tally z__tr_tally
# define adler32 z_adler32
# define adler32_combine z_adler32_combine
# define adler32_combine64 z_adler32_combine64
# ifndef Z_SOLO
# define compress z_compress
# define compress2 z_compress2
# define compressBound z_compressBound
# endif
# define crc32 z_crc32
# define crc32_combine z_crc32_combine
# define crc32_combine64 z_crc32_combine64
# define deflate z_deflate
# define deflateBound z_deflateBound
# define deflateCopy z_deflateCopy
# define deflateEnd z_deflateEnd
# define deflateInit2_ z_deflateInit2_
# define deflateInit_ z_deflateInit_
# define deflateParams z_deflateParams
# define deflatePending z_deflatePending
# define deflatePrime z_deflatePrime
# define deflateReset z_deflateReset
# define deflateResetKeep z_deflateResetKeep
# define deflateSetDictionary z_deflateSetDictionary
# define deflateSetHeader z_deflateSetHeader
# define deflateTune z_deflateTune
# define deflate_copyright z_deflate_copyright
# define get_crc_table z_get_crc_table
# ifndef Z_SOLO
# define gz_error z_gz_error
# define gz_intmax z_gz_intmax
# define gz_strwinerror z_gz_strwinerror
# define gzbuffer z_gzbuffer
# define gzclearerr z_gzclearerr
# define gzclose z_gzclose
# define gzclose_r z_gzclose_r
# define gzclose_w z_gzclose_w
# define gzdirect z_gzdirect
# define gzdopen z_gzdopen
# define gzeof z_gzeof
# define gzerror z_gzerror
# define gzflush z_gzflush
# define gzgetc z_gzgetc
# define gzgetc_ z_gzgetc_
# define gzgets z_gzgets
# define gzoffset z_gzoffset
# define gzoffset64 z_gzoffset64
# define gzopen z_gzopen
# define gzopen64 z_gzopen64
# ifdef _WIN32
# define gzopen_w z_gzopen_w
# endif
# define gzprintf z_gzprintf
# define gzvprintf z_gzvprintf
# define gzputc z_gzputc
# define gzputs z_gzputs
# define gzread z_gzread
# define gzrewind z_gzrewind
# define gzseek z_gzseek
# define gzseek64 z_gzseek64
# define gzsetparams z_gzsetparams
# define gztell z_gztell
# define gztell64 z_gztell64
# define gzungetc z_gzungetc
# define gzwrite z_gzwrite
# endif
# define inflate z_inflate
# define inflateBack z_inflateBack
# define inflateBackEnd z_inflateBackEnd
# define inflateBackInit_ z_inflateBackInit_
# define inflateCopy z_inflateCopy
# define inflateEnd z_inflateEnd
# define inflateGetHeader z_inflateGetHeader
# define inflateInit2_ z_inflateInit2_
# define inflateInit_ z_inflateInit_
# define inflateMark z_inflateMark
# define inflatePrime z_inflatePrime
# define inflateReset z_inflateReset
# define inflateReset2 z_inflateReset2
# define inflateSetDictionary z_inflateSetDictionary
# define inflateGetDictionary z_inflateGetDictionary
# define inflateSync z_inflateSync
# define inflateSyncPoint z_inflateSyncPoint
# define inflateUndermine z_inflateUndermine
# define inflateResetKeep z_inflateResetKeep
# define inflate_copyright z_inflate_copyright
# define inflate_fast z_inflate_fast
# define inflate_table z_inflate_table
# ifndef Z_SOLO
# define uncompress z_uncompress
# endif
# define zError z_zError
# ifndef Z_SOLO
# define zcalloc z_zcalloc
# define zcfree z_zcfree
# endif
# define zlibCompileFlags z_zlibCompileFlags
# define zlibVersion z_zlibVersion
 
/* all zlib typedefs in zlib.h and zconf.h */
# define Byte z_Byte
# define Bytef z_Bytef
# define alloc_func z_alloc_func
# define charf z_charf
# define free_func z_free_func
# ifndef Z_SOLO
# define gzFile z_gzFile
# endif
# define gz_header z_gz_header
# define gz_headerp z_gz_headerp
# define in_func z_in_func
# define intf z_intf
# define out_func z_out_func
# define uInt z_uInt
# define uIntf z_uIntf
# define uLong z_uLong
# define uLongf z_uLongf
# define voidp z_voidp
# define voidpc z_voidpc
# define voidpf z_voidpf
 
/* all zlib structs in zlib.h and zconf.h */
# define gz_header_s z_gz_header_s
# define internal_state z_internal_state
 
#endif
 
#if defined(__MSDOS__) && !defined(MSDOS)
# define MSDOS
#endif
#if (defined(OS_2) || defined(__OS2__)) && !defined(OS2)
# define OS2
#endif
#if defined(_WINDOWS) && !defined(WINDOWS)
# define WINDOWS
#endif
#if defined(_WIN32) || defined(_WIN32_WCE) || defined(__WIN32__)
# ifndef WIN32
# define WIN32
# endif
#endif
#if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32)
# if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__)
# ifndef SYS16BIT
# define SYS16BIT
# endif
# endif
#endif
 
/*
* Compile with -DMAXSEG_64K if the alloc function cannot allocate more
* than 64k bytes at a time (needed on systems with 16-bit int).
*/
#ifdef SYS16BIT
# define MAXSEG_64K
#endif
#ifdef MSDOS
# define UNALIGNED_OK
#endif
 
#ifdef __STDC_VERSION__
# ifndef STDC
# define STDC
# endif
# if __STDC_VERSION__ >= 199901L
# ifndef STDC99
# define STDC99
# endif
# endif
#endif
#if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus))
# define STDC
#endif
#if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__))
# define STDC
#endif
#if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32))
# define STDC
#endif
#if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__))
# define STDC
#endif
 
#if defined(__OS400__) && !defined(STDC) /* iSeries (formerly AS/400). */
# define STDC
#endif
 
#ifndef STDC
# ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */
# define const /* note: need a more gentle solution here */
# endif
#endif
 
#if defined(ZLIB_CONST) && !defined(z_const)
# define z_const const
#else
# define z_const
#endif
 
/* Some Mac compilers merge all .h files incorrectly: */
#if defined(__MWERKS__)||defined(applec)||defined(THINK_C)||defined(__SC__)
# define NO_DUMMY_DECL
#endif
 
/* Maximum value for memLevel in deflateInit2 */
#ifndef MAX_MEM_LEVEL
# ifdef MAXSEG_64K
# define MAX_MEM_LEVEL 8
# else
# define MAX_MEM_LEVEL 9
# endif
#endif
 
/* Maximum value for windowBits in deflateInit2 and inflateInit2.
* WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files
* created by gzip. (Files created by minigzip can still be extracted by
* gzip.)
*/
#ifndef MAX_WBITS
# define MAX_WBITS 15 /* 32K LZ77 window */
#endif
 
/* The memory requirements for deflate are (in bytes):
(1 << (windowBits+2)) + (1 << (memLevel+9))
that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values)
plus a few kilobytes for small objects. For example, if you want to reduce
the default memory requirements from 256K to 128K, compile with
make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
Of course this will generally degrade compression (there's no free lunch).
 
The memory requirements for inflate are (in bytes) 1 << windowBits
that is, 32K for windowBits=15 (default value) plus a few kilobytes
for small objects.
*/
 
/* Type declarations */
 
#ifndef OF /* function prototypes */
# ifdef STDC
# define OF(args) args
# else
# define OF(args) ()
# endif
#endif
 
#ifndef Z_ARG /* function prototypes for stdarg */
# if defined(STDC) || defined(Z_HAVE_STDARG_H)
# define Z_ARG(args) args
# else
# define Z_ARG(args) ()
# endif
#endif
 
/* The following definitions for FAR are needed only for MSDOS mixed
* model programming (small or medium model with some far allocations).
* This was tested only with MSC; for other MSDOS compilers you may have
* to define NO_MEMCPY in zutil.h. If you don't need the mixed model,
* just define FAR to be empty.
*/
#ifdef SYS16BIT
# if defined(M_I86SM) || defined(M_I86MM)
/* MSC small or medium model */
# define SMALL_MEDIUM
# ifdef _MSC_VER
# define FAR _far
# else
# define FAR far
# endif
# endif
# if (defined(__SMALL__) || defined(__MEDIUM__))
/* Turbo C small or medium model */
# define SMALL_MEDIUM
# ifdef __BORLANDC__
# define FAR _far
# else
# define FAR far
# endif
# endif
#endif
 
#if defined(WINDOWS) || defined(WIN32)
/* If building or using zlib as a DLL, define ZLIB_DLL.
* This is not mandatory, but it offers a little performance increase.
*/
# ifdef ZLIB_DLL
# if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500))
# ifdef ZLIB_INTERNAL
# define ZEXTERN extern __declspec(dllexport)
# else
# define ZEXTERN extern __declspec(dllimport)
# endif
# endif
# endif /* ZLIB_DLL */
/* If building or using zlib with the WINAPI/WINAPIV calling convention,
* define ZLIB_WINAPI.
* Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI.
*/
# ifdef ZLIB_WINAPI
# ifdef FAR
# undef FAR
# endif
# include <windows.h>
/* No need for _export, use ZLIB.DEF instead. */
/* For complete Windows compatibility, use WINAPI, not __stdcall. */
# define ZEXPORT WINAPI
# ifdef WIN32
# define ZEXPORTVA WINAPIV
# else
# define ZEXPORTVA FAR CDECL
# endif
# endif
#endif
 
#if defined (__BEOS__)
# ifdef ZLIB_DLL
# ifdef ZLIB_INTERNAL
# define ZEXPORT __declspec(dllexport)
# define ZEXPORTVA __declspec(dllexport)
# else
# define ZEXPORT __declspec(dllimport)
# define ZEXPORTVA __declspec(dllimport)
# endif
# endif
#endif
 
#ifndef ZEXTERN
# define ZEXTERN extern
#endif
#ifndef ZEXPORT
# define ZEXPORT
#endif
#ifndef ZEXPORTVA
# define ZEXPORTVA
#endif
 
#ifndef FAR
# define FAR
#endif
 
#if !defined(__MACTYPES__)
typedef unsigned char Byte; /* 8 bits */
#endif
typedef unsigned int uInt; /* 16 bits or more */
typedef unsigned long uLong; /* 32 bits or more */
 
#ifdef SMALL_MEDIUM
/* Borland C/C++ and some old MSC versions ignore FAR inside typedef */
# define Bytef Byte FAR
#else
typedef Byte FAR Bytef;
#endif
typedef char FAR charf;
typedef int FAR intf;
typedef uInt FAR uIntf;
typedef uLong FAR uLongf;
 
#ifdef STDC
typedef void const *voidpc;
typedef void FAR *voidpf;
typedef void *voidp;
#else
typedef Byte const *voidpc;
typedef Byte FAR *voidpf;
typedef Byte *voidp;
#endif
 
#if !defined(Z_U4) && !defined(Z_SOLO) && defined(STDC)
# include <limits.h>
# if (UINT_MAX == 0xffffffffUL)
# define Z_U4 unsigned
# elif (ULONG_MAX == 0xffffffffUL)
# define Z_U4 unsigned long
# elif (USHRT_MAX == 0xffffffffUL)
# define Z_U4 unsigned short
# endif
#endif
 
#ifdef Z_U4
typedef Z_U4 z_crc_t;
#else
typedef unsigned long z_crc_t;
#endif
 
#ifdef HAVE_UNISTD_H /* may be set to #if 1 by ./configure */
# define Z_HAVE_UNISTD_H
#endif
 
#ifdef HAVE_STDARG_H /* may be set to #if 1 by ./configure */
# define Z_HAVE_STDARG_H
#endif
 
#ifdef STDC
# ifndef Z_SOLO
# include <sys/types.h> /* for off_t */
# endif
#endif
 
#if defined(STDC) || defined(Z_HAVE_STDARG_H)
# ifndef Z_SOLO
# include <stdarg.h> /* for va_list */
# endif
#endif
 
#ifdef _WIN32
# ifndef Z_SOLO
# include <stddef.h> /* for wchar_t */
# endif
#endif
 
/* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and
* "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even
* though the former does not conform to the LFS document), but considering
* both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as
* equivalently requesting no 64-bit operations
*/
#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
# undef _LARGEFILE64_SOURCE
#endif
 
#if defined(__WATCOMC__) && !defined(Z_HAVE_UNISTD_H)
# define Z_HAVE_UNISTD_H
#endif
#ifndef Z_SOLO
# if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
# include <unistd.h> /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
# ifdef VMS
# include <unixio.h> /* for off_t */
# endif
# ifndef z_off_t
# define z_off_t off_t
# endif
# endif
#endif
 
#if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE-0
# define Z_LFS64
#endif
 
#if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64)
# define Z_LARGE64
#endif
 
#if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS-0 == 64 && defined(Z_LFS64)
# define Z_WANT64
#endif
 
#if !defined(SEEK_SET) && !defined(Z_SOLO)
# define SEEK_SET 0 /* Seek from beginning of file. */
# define SEEK_CUR 1 /* Seek from current position. */
# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */
#endif
 
#ifndef z_off_t
# define z_off_t long
#endif
 
#if !defined(_WIN32) && defined(Z_LARGE64)
# define z_off64_t off64_t
#else
# if defined(_WIN32) && !defined(__GNUC__) && !defined(Z_SOLO)
# define z_off64_t __int64
# else
# define z_off64_t z_off_t
# endif
#endif
 
/* MVS linker does not support external names larger than 8 bytes */
#if defined(__MVS__)
#pragma map(deflateInit_,"DEIN")
#pragma map(deflateInit2_,"DEIN2")
#pragma map(deflateEnd,"DEEND")
#pragma map(deflateBound,"DEBND")
#pragma map(inflateInit_,"ININ")
#pragma map(inflateInit2_,"ININ2")
#pragma map(inflateEnd,"INEND")
#pragma map(inflateSync,"INSY")
#pragma map(inflateSetDictionary,"INSEDI")
#pragma map(compressBound,"CMBND")
#pragma map(inflate_table,"INTABL")
#pragma map(inflate_fast,"INFA")
#pragma map(inflate_copyright,"INCOPY")
#endif
 
#endif /* ZCONF_H */
/pkg/tags/20220203/zlib/zlib.h
0,0 → 1,1768
/* zlib.h -- interface of the 'zlib' general purpose compression library
version 1.2.8, April 28th, 2013
 
Copyright (C) 1995-2013 Jean-loup Gailly and Mark Adler
 
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
 
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
 
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
 
Jean-loup Gailly Mark Adler
jloup@gzip.org madler@alumni.caltech.edu
 
 
The data format used by the zlib library is described by RFCs (Request for
Comments) 1950 to 1952 in the files http://tools.ietf.org/html/rfc1950
(zlib format), rfc1951 (deflate format) and rfc1952 (gzip format).
*/
 
#ifndef ZLIB_H
#define ZLIB_H
 
#include "zconf.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define ZLIB_VERSION "1.2.8"
#define ZLIB_VERNUM 0x1280
#define ZLIB_VER_MAJOR 1
#define ZLIB_VER_MINOR 2
#define ZLIB_VER_REVISION 8
#define ZLIB_VER_SUBREVISION 0
 
/*
The 'zlib' compression library provides in-memory compression and
decompression functions, including integrity checks of the uncompressed data.
This version of the library supports only one compression method (deflation)
but other algorithms will be added later and will have the same stream
interface.
 
Compression can be done in a single step if the buffers are large enough,
or can be done by repeated calls of the compression function. In the latter
case, the application must provide more input and/or consume the output
(providing more output space) before each call.
 
The compressed data format used by default by the in-memory functions is
the zlib format, which is a zlib wrapper documented in RFC 1950, wrapped
around a deflate stream, which is itself documented in RFC 1951.
 
The library also supports reading and writing files in gzip (.gz) format
with an interface similar to that of stdio using the functions that start
with "gz". The gzip format is different from the zlib format. gzip is a
gzip wrapper, documented in RFC 1952, wrapped around a deflate stream.
 
This library can optionally read and write gzip streams in memory as well.
 
The zlib format was designed to be compact and fast for use in memory
and on communications channels. The gzip format was designed for single-
file compression on file systems, has a larger header than zlib to maintain
directory information, and uses a different, slower check method than zlib.
 
The library does not install any signal handler. The decoder checks
the consistency of the compressed data, so the library should never crash
even in case of corrupted input.
*/
 
typedef voidpf (*alloc_func) OF((voidpf opaque, uInt items, uInt size));
typedef void (*free_func) OF((voidpf opaque, voidpf address));
 
struct internal_state;
 
typedef struct z_stream_s {
z_const Bytef *next_in; /* next input byte */
uInt avail_in; /* number of bytes available at next_in */
uLong total_in; /* total number of input bytes read so far */
 
Bytef *next_out; /* next output byte should be put there */
uInt avail_out; /* remaining free space at next_out */
uLong total_out; /* total number of bytes output so far */
 
z_const char *msg; /* last error message, NULL if no error */
struct internal_state FAR *state; /* not visible by applications */
 
alloc_func zalloc; /* used to allocate the internal state */
free_func zfree; /* used to free the internal state */
voidpf opaque; /* private data object passed to zalloc and zfree */
 
int data_type; /* best guess about the data type: binary or text */
uLong adler; /* adler32 value of the uncompressed data */
uLong reserved; /* reserved for future use */
} z_stream;
 
typedef z_stream FAR *z_streamp;
 
/*
gzip header information passed to and from zlib routines. See RFC 1952
for more details on the meanings of these fields.
*/
typedef struct gz_header_s {
int text; /* true if compressed data believed to be text */
uLong time; /* modification time */
int xflags; /* extra flags (not used when writing a gzip file) */
int os; /* operating system */
Bytef *extra; /* pointer to extra field or Z_NULL if none */
uInt extra_len; /* extra field length (valid if extra != Z_NULL) */
uInt extra_max; /* space at extra (only when reading header) */
Bytef *name; /* pointer to zero-terminated file name or Z_NULL */
uInt name_max; /* space at name (only when reading header) */
Bytef *comment; /* pointer to zero-terminated comment or Z_NULL */
uInt comm_max; /* space at comment (only when reading header) */
int hcrc; /* true if there was or will be a header crc */
int done; /* true when done reading gzip header (not used
when writing a gzip file) */
} gz_header;
 
typedef gz_header FAR *gz_headerp;
 
/*
The application must update next_in and avail_in when avail_in has dropped
to zero. It must update next_out and avail_out when avail_out has dropped
to zero. The application must initialize zalloc, zfree and opaque before
calling the init function. All other fields are set by the compression
library and must not be updated by the application.
 
The opaque value provided by the application will be passed as the first
parameter for calls of zalloc and zfree. This can be useful for custom
memory management. The compression library attaches no meaning to the
opaque value.
 
zalloc must return Z_NULL if there is not enough memory for the object.
If zlib is used in a multi-threaded application, zalloc and zfree must be
thread safe.
 
On 16-bit systems, the functions zalloc and zfree must be able to allocate
exactly 65536 bytes, but will not be required to allocate more than this if
the symbol MAXSEG_64K is defined (see zconf.h). WARNING: On MSDOS, pointers
returned by zalloc for objects of exactly 65536 bytes *must* have their
offset normalized to zero. The default allocation function provided by this
library ensures this (see zutil.c). To reduce memory requirements and avoid
any allocation of 64K objects, at the expense of compression ratio, compile
the library with -DMAX_WBITS=14 (see zconf.h).
 
The fields total_in and total_out can be used for statistics or progress
reports. After compression, total_in holds the total size of the
uncompressed data and may be saved for use in the decompressor (particularly
if the decompressor wants to decompress everything in a single step).
*/
 
/* constants */
 
#define Z_NO_FLUSH 0
#define Z_PARTIAL_FLUSH 1
#define Z_SYNC_FLUSH 2
#define Z_FULL_FLUSH 3
#define Z_FINISH 4
#define Z_BLOCK 5
#define Z_TREES 6
/* Allowed flush values; see deflate() and inflate() below for details */
 
#define Z_OK 0
#define Z_STREAM_END 1
#define Z_NEED_DICT 2
#define Z_ERRNO (-1)
#define Z_STREAM_ERROR (-2)
#define Z_DATA_ERROR (-3)
#define Z_MEM_ERROR (-4)
#define Z_BUF_ERROR (-5)
#define Z_VERSION_ERROR (-6)
/* Return codes for the compression/decompression functions. Negative values
* are errors, positive values are used for special but normal events.
*/
 
#define Z_NO_COMPRESSION 0
#define Z_BEST_SPEED 1
#define Z_BEST_COMPRESSION 9
#define Z_DEFAULT_COMPRESSION (-1)
/* compression levels */
 
#define Z_FILTERED 1
#define Z_HUFFMAN_ONLY 2
#define Z_RLE 3
#define Z_FIXED 4
#define Z_DEFAULT_STRATEGY 0
/* compression strategy; see deflateInit2() below for details */
 
#define Z_BINARY 0
#define Z_TEXT 1
#define Z_ASCII Z_TEXT /* for compatibility with 1.2.2 and earlier */
#define Z_UNKNOWN 2
/* Possible values of the data_type field (though see inflate()) */
 
#define Z_DEFLATED 8
/* The deflate compression method (the only one supported in this version) */
 
#define Z_NULL 0 /* for initializing zalloc, zfree, opaque */
 
#define zlib_version zlibVersion()
/* for compatibility with versions < 1.0.2 */
 
 
/* basic functions */
 
ZEXTERN const char * ZEXPORT zlibVersion OF((void));
/* The application can compare zlibVersion and ZLIB_VERSION for consistency.
If the first character differs, the library code actually used is not
compatible with the zlib.h header file used by the application. This check
is automatically made by deflateInit and inflateInit.
*/
 
/*
ZEXTERN int ZEXPORT deflateInit OF((z_streamp strm, int level));
 
Initializes the internal stream state for compression. The fields
zalloc, zfree and opaque must be initialized before by the caller. If
zalloc and zfree are set to Z_NULL, deflateInit updates them to use default
allocation functions.
 
The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9:
1 gives best speed, 9 gives best compression, 0 gives no compression at all
(the input data is simply copied a block at a time). Z_DEFAULT_COMPRESSION
requests a default compromise between speed and compression (currently
equivalent to level 6).
 
deflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough
memory, Z_STREAM_ERROR if level is not a valid compression level, or
Z_VERSION_ERROR if the zlib library version (zlib_version) is incompatible
with the version assumed by the caller (ZLIB_VERSION). msg is set to null
if there is no error message. deflateInit does not perform any compression:
this will be done by deflate().
*/
 
 
ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush));
/*
deflate compresses as much data as possible, and stops when the input
buffer becomes empty or the output buffer becomes full. It may introduce
some output latency (reading input without producing any output) except when
forced to flush.
 
The detailed semantics are as follows. deflate performs one or both of the
following actions:
 
- Compress more input starting at next_in and update next_in and avail_in
accordingly. If not all input can be processed (because there is not
enough room in the output buffer), next_in and avail_in are updated and
processing will resume at this point for the next call of deflate().
 
- Provide more output starting at next_out and update next_out and avail_out
accordingly. This action is forced if the parameter flush is non zero.
Forcing flush frequently degrades the compression ratio, so this parameter
should be set only when necessary (in interactive applications). Some
output may be provided even if flush is not set.
 
Before the call of deflate(), the application should ensure that at least
one of the actions is possible, by providing more input and/or consuming more
output, and updating avail_in or avail_out accordingly; avail_out should
never be zero before the call. The application can consume the compressed
output when it wants, for example when the output buffer is full (avail_out
== 0), or after each call of deflate(). If deflate returns Z_OK and with
zero avail_out, it must be called again after making room in the output
buffer because there might be more output pending.
 
Normally the parameter flush is set to Z_NO_FLUSH, which allows deflate to
decide how much data to accumulate before producing output, in order to
maximize compression.
 
If the parameter flush is set to Z_SYNC_FLUSH, all pending output is
flushed to the output buffer and the output is aligned on a byte boundary, so
that the decompressor can get all input data available so far. (In
particular avail_in is zero after the call if enough output space has been
provided before the call.) Flushing may degrade compression for some
compression algorithms and so it should be used only when necessary. This
completes the current deflate block and follows it with an empty stored block
that is three bits plus filler bits to the next byte, followed by four bytes
(00 00 ff ff).
 
If flush is set to Z_PARTIAL_FLUSH, all pending output is flushed to the
output buffer, but the output is not aligned to a byte boundary. All of the
input data so far will be available to the decompressor, as for Z_SYNC_FLUSH.
This completes the current deflate block and follows it with an empty fixed
codes block that is 10 bits long. This assures that enough bytes are output
in order for the decompressor to finish the block before the empty fixed code
block.
 
If flush is set to Z_BLOCK, a deflate block is completed and emitted, as
for Z_SYNC_FLUSH, but the output is not aligned on a byte boundary, and up to
seven bits of the current block are held to be written as the next byte after
the next deflate block is completed. In this case, the decompressor may not
be provided enough bits at this point in order to complete decompression of
the data provided so far to the compressor. It may need to wait for the next
block to be emitted. This is for advanced applications that need to control
the emission of deflate blocks.
 
If flush is set to Z_FULL_FLUSH, all output is flushed as with
Z_SYNC_FLUSH, and the compression state is reset so that decompression can
restart from this point if previous compressed data has been damaged or if
random access is desired. Using Z_FULL_FLUSH too often can seriously degrade
compression.
 
If deflate returns with avail_out == 0, this function must be called again
with the same value of the flush parameter and more output space (updated
avail_out), until the flush is complete (deflate returns with non-zero
avail_out). In the case of a Z_FULL_FLUSH or Z_SYNC_FLUSH, make sure that
avail_out is greater than six to avoid repeated flush markers due to
avail_out == 0 on return.
 
If the parameter flush is set to Z_FINISH, pending input is processed,
pending output is flushed and deflate returns with Z_STREAM_END if there was
enough output space; if deflate returns with Z_OK, this function must be
called again with Z_FINISH and more output space (updated avail_out) but no
more input data, until it returns with Z_STREAM_END or an error. After
deflate has returned Z_STREAM_END, the only possible operations on the stream
are deflateReset or deflateEnd.
 
Z_FINISH can be used immediately after deflateInit if all the compression
is to be done in a single step. In this case, avail_out must be at least the
value returned by deflateBound (see below). Then deflate is guaranteed to
return Z_STREAM_END. If not enough output space is provided, deflate will
not return Z_STREAM_END, and it must be called again as described above.
 
deflate() sets strm->adler to the adler32 checksum of all input read
so far (that is, total_in bytes).
 
deflate() may update strm->data_type if it can make a good guess about
the input data type (Z_BINARY or Z_TEXT). In doubt, the data is considered
binary. This field is only for information purposes and does not affect the
compression algorithm in any manner.
 
deflate() returns Z_OK if some progress has been made (more input
processed or more output produced), Z_STREAM_END if all input has been
consumed and all output has been produced (only when flush is set to
Z_FINISH), Z_STREAM_ERROR if the stream state was inconsistent (for example
if next_in or next_out was Z_NULL), Z_BUF_ERROR if no progress is possible
(for example avail_in or avail_out was zero). Note that Z_BUF_ERROR is not
fatal, and deflate() can be called again with more input and more output
space to continue compressing.
*/
 
 
ZEXTERN int ZEXPORT deflateEnd OF((z_streamp strm));
/*
All dynamically allocated data structures for this stream are freed.
This function discards any unprocessed input and does not flush any pending
output.
 
deflateEnd returns Z_OK if success, Z_STREAM_ERROR if the
stream state was inconsistent, Z_DATA_ERROR if the stream was freed
prematurely (some input or output was discarded). In the error case, msg
may be set but then points to a static string (which must not be
deallocated).
*/
 
 
/*
ZEXTERN int ZEXPORT inflateInit OF((z_streamp strm));
 
Initializes the internal stream state for decompression. The fields
next_in, avail_in, zalloc, zfree and opaque must be initialized before by
the caller. If next_in is not Z_NULL and avail_in is large enough (the
exact value depends on the compression method), inflateInit determines the
compression method from the zlib header and allocates all data structures
accordingly; otherwise the allocation will be deferred to the first call of
inflate. If zalloc and zfree are set to Z_NULL, inflateInit updates them to
use default allocation functions.
 
inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough
memory, Z_VERSION_ERROR if the zlib library version is incompatible with the
version assumed by the caller, or Z_STREAM_ERROR if the parameters are
invalid, such as a null pointer to the structure. msg is set to null if
there is no error message. inflateInit does not perform any decompression
apart from possibly reading the zlib header if present: actual decompression
will be done by inflate(). (So next_in and avail_in may be modified, but
next_out and avail_out are unused and unchanged.) The current implementation
of inflateInit() does not process any header information -- that is deferred
until inflate() is called.
*/
 
 
ZEXTERN int ZEXPORT inflate OF((z_streamp strm, int flush));
/*
inflate decompresses as much data as possible, and stops when the input
buffer becomes empty or the output buffer becomes full. It may introduce
some output latency (reading input without producing any output) except when
forced to flush.
 
The detailed semantics are as follows. inflate performs one or both of the
following actions:
 
- Decompress more input starting at next_in and update next_in and avail_in
accordingly. If not all input can be processed (because there is not
enough room in the output buffer), next_in is updated and processing will
resume at this point for the next call of inflate().
 
- Provide more output starting at next_out and update next_out and avail_out
accordingly. inflate() provides as much output as possible, until there is
no more input data or no more space in the output buffer (see below about
the flush parameter).
 
Before the call of inflate(), the application should ensure that at least
one of the actions is possible, by providing more input and/or consuming more
output, and updating the next_* and avail_* values accordingly. The
application can consume the uncompressed output when it wants, for example
when the output buffer is full (avail_out == 0), or after each call of
inflate(). If inflate returns Z_OK and with zero avail_out, it must be
called again after making room in the output buffer because there might be
more output pending.
 
The flush parameter of inflate() can be Z_NO_FLUSH, Z_SYNC_FLUSH, Z_FINISH,
Z_BLOCK, or Z_TREES. Z_SYNC_FLUSH requests that inflate() flush as much
output as possible to the output buffer. Z_BLOCK requests that inflate()
stop if and when it gets to the next deflate block boundary. When decoding
the zlib or gzip format, this will cause inflate() to return immediately
after the header and before the first block. When doing a raw inflate,
inflate() will go ahead and process the first block, and will return when it
gets to the end of that block, or when it runs out of data.
 
The Z_BLOCK option assists in appending to or combining deflate streams.
Also to assist in this, on return inflate() will set strm->data_type to the
number of unused bits in the last byte taken from strm->next_in, plus 64 if
inflate() is currently decoding the last block in the deflate stream, plus
128 if inflate() returned immediately after decoding an end-of-block code or
decoding the complete header up to just before the first byte of the deflate
stream. The end-of-block will not be indicated until all of the uncompressed
data from that block has been written to strm->next_out. The number of
unused bits may in general be greater than seven, except when bit 7 of
data_type is set, in which case the number of unused bits will be less than
eight. data_type is set as noted here every time inflate() returns for all
flush options, and so can be used to determine the amount of currently
consumed input in bits.
 
The Z_TREES option behaves as Z_BLOCK does, but it also returns when the
end of each deflate block header is reached, before any actual data in that
block is decoded. This allows the caller to determine the length of the
deflate block header for later use in random access within a deflate block.
256 is added to the value of strm->data_type when inflate() returns
immediately after reaching the end of the deflate block header.
 
inflate() should normally be called until it returns Z_STREAM_END or an
error. However if all decompression is to be performed in a single step (a
single call of inflate), the parameter flush should be set to Z_FINISH. In
this case all pending input is processed and all pending output is flushed;
avail_out must be large enough to hold all of the uncompressed data for the
operation to complete. (The size of the uncompressed data may have been
saved by the compressor for this purpose.) The use of Z_FINISH is not
required to perform an inflation in one step. However it may be used to
inform inflate that a faster approach can be used for the single inflate()
call. Z_FINISH also informs inflate to not maintain a sliding window if the
stream completes, which reduces inflate's memory footprint. If the stream
does not complete, either because not all of the stream is provided or not
enough output space is provided, then a sliding window will be allocated and
inflate() can be called again to continue the operation as if Z_NO_FLUSH had
been used.
 
In this implementation, inflate() always flushes as much output as
possible to the output buffer, and always uses the faster approach on the
first call. So the effects of the flush parameter in this implementation are
on the return value of inflate() as noted below, when inflate() returns early
when Z_BLOCK or Z_TREES is used, and when inflate() avoids the allocation of
memory for a sliding window when Z_FINISH is used.
 
If a preset dictionary is needed after this call (see inflateSetDictionary
below), inflate sets strm->adler to the Adler-32 checksum of the dictionary
chosen by the compressor and returns Z_NEED_DICT; otherwise it sets
strm->adler to the Adler-32 checksum of all output produced so far (that is,
total_out bytes) and returns Z_OK, Z_STREAM_END or an error code as described
below. At the end of the stream, inflate() checks that its computed adler32
checksum is equal to that saved by the compressor and returns Z_STREAM_END
only if the checksum is correct.
 
inflate() can decompress and check either zlib-wrapped or gzip-wrapped
deflate data. The header type is detected automatically, if requested when
initializing with inflateInit2(). Any information contained in the gzip
header is not retained, so applications that need that information should
instead use raw inflate, see inflateInit2() below, or inflateBack() and
perform their own processing of the gzip header and trailer. When processing
gzip-wrapped deflate data, strm->adler32 is set to the CRC-32 of the output
producted so far. The CRC-32 is checked against the gzip trailer.
 
inflate() returns Z_OK if some progress has been made (more input processed
or more output produced), Z_STREAM_END if the end of the compressed data has
been reached and all uncompressed output has been produced, Z_NEED_DICT if a
preset dictionary is needed at this point, Z_DATA_ERROR if the input data was
corrupted (input stream not conforming to the zlib format or incorrect check
value), Z_STREAM_ERROR if the stream structure was inconsistent (for example
next_in or next_out was Z_NULL), Z_MEM_ERROR if there was not enough memory,
Z_BUF_ERROR if no progress is possible or if there was not enough room in the
output buffer when Z_FINISH is used. Note that Z_BUF_ERROR is not fatal, and
inflate() can be called again with more input and more output space to
continue decompressing. If Z_DATA_ERROR is returned, the application may
then call inflateSync() to look for a good compression block if a partial
recovery of the data is desired.
*/
 
 
ZEXTERN int ZEXPORT inflateEnd OF((z_streamp strm));
/*
All dynamically allocated data structures for this stream are freed.
This function discards any unprocessed input and does not flush any pending
output.
 
inflateEnd returns Z_OK if success, Z_STREAM_ERROR if the stream state
was inconsistent. In the error case, msg may be set but then points to a
static string (which must not be deallocated).
*/
 
 
/* Advanced functions */
 
/*
The following functions are needed only in some special applications.
*/
 
/*
ZEXTERN int ZEXPORT deflateInit2 OF((z_streamp strm,
int level,
int method,
int windowBits,
int memLevel,
int strategy));
 
This is another version of deflateInit with more compression options. The
fields next_in, zalloc, zfree and opaque must be initialized before by the
caller.
 
The method parameter is the compression method. It must be Z_DEFLATED in
this version of the library.
 
The windowBits parameter is the base two logarithm of the window size
(the size of the history buffer). It should be in the range 8..15 for this
version of the library. Larger values of this parameter result in better
compression at the expense of memory usage. The default value is 15 if
deflateInit is used instead.
 
windowBits can also be -8..-15 for raw deflate. In this case, -windowBits
determines the window size. deflate() will then generate raw deflate data
with no zlib header or trailer, and will not compute an adler32 check value.
 
windowBits can also be greater than 15 for optional gzip encoding. Add
16 to windowBits to write a simple gzip header and trailer around the
compressed data instead of a zlib wrapper. The gzip header will have no
file name, no extra data, no comment, no modification time (set to zero), no
header crc, and the operating system will be set to 255 (unknown). If a
gzip stream is being written, strm->adler is a crc32 instead of an adler32.
 
The memLevel parameter specifies how much memory should be allocated
for the internal compression state. memLevel=1 uses minimum memory but is
slow and reduces compression ratio; memLevel=9 uses maximum memory for
optimal speed. The default value is 8. See zconf.h for total memory usage
as a function of windowBits and memLevel.
 
The strategy parameter is used to tune the compression algorithm. Use the
value Z_DEFAULT_STRATEGY for normal data, Z_FILTERED for data produced by a
filter (or predictor), Z_HUFFMAN_ONLY to force Huffman encoding only (no
string match), or Z_RLE to limit match distances to one (run-length
encoding). Filtered data consists mostly of small values with a somewhat
random distribution. In this case, the compression algorithm is tuned to
compress them better. The effect of Z_FILTERED is to force more Huffman
coding and less string matching; it is somewhat intermediate between
Z_DEFAULT_STRATEGY and Z_HUFFMAN_ONLY. Z_RLE is designed to be almost as
fast as Z_HUFFMAN_ONLY, but give better compression for PNG image data. The
strategy parameter only affects the compression ratio but not the
correctness of the compressed output even if it is not set appropriately.
Z_FIXED prevents the use of dynamic Huffman codes, allowing for a simpler
decoder for special applications.
 
deflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
memory, Z_STREAM_ERROR if any parameter is invalid (such as an invalid
method), or Z_VERSION_ERROR if the zlib library version (zlib_version) is
incompatible with the version assumed by the caller (ZLIB_VERSION). msg is
set to null if there is no error message. deflateInit2 does not perform any
compression: this will be done by deflate().
*/
 
ZEXTERN int ZEXPORT deflateSetDictionary OF((z_streamp strm,
const Bytef *dictionary,
uInt dictLength));
/*
Initializes the compression dictionary from the given byte sequence
without producing any compressed output. When using the zlib format, this
function must be called immediately after deflateInit, deflateInit2 or
deflateReset, and before any call of deflate. When doing raw deflate, this
function must be called either before any call of deflate, or immediately
after the completion of a deflate block, i.e. after all input has been
consumed and all output has been delivered when using any of the flush
options Z_BLOCK, Z_PARTIAL_FLUSH, Z_SYNC_FLUSH, or Z_FULL_FLUSH. The
compressor and decompressor must use exactly the same dictionary (see
inflateSetDictionary).
 
The dictionary should consist of strings (byte sequences) that are likely
to be encountered later in the data to be compressed, with the most commonly
used strings preferably put towards the end of the dictionary. Using a
dictionary is most useful when the data to be compressed is short and can be
predicted with good accuracy; the data can then be compressed better than
with the default empty dictionary.
 
Depending on the size of the compression data structures selected by
deflateInit or deflateInit2, a part of the dictionary may in effect be
discarded, for example if the dictionary is larger than the window size
provided in deflateInit or deflateInit2. Thus the strings most likely to be
useful should be put at the end of the dictionary, not at the front. In
addition, the current implementation of deflate will use at most the window
size minus 262 bytes of the provided dictionary.
 
Upon return of this function, strm->adler is set to the adler32 value
of the dictionary; the decompressor may later use this value to determine
which dictionary has been used by the compressor. (The adler32 value
applies to the whole dictionary even if only a subset of the dictionary is
actually used by the compressor.) If a raw deflate was requested, then the
adler32 value is not computed and strm->adler is not set.
 
deflateSetDictionary returns Z_OK if success, or Z_STREAM_ERROR if a
parameter is invalid (e.g. dictionary being Z_NULL) or the stream state is
inconsistent (for example if deflate has already been called for this stream
or if not at a block boundary for raw deflate). deflateSetDictionary does
not perform any compression: this will be done by deflate().
*/
 
ZEXTERN int ZEXPORT deflateCopy OF((z_streamp dest,
z_streamp source));
/*
Sets the destination stream as a complete copy of the source stream.
 
This function can be useful when several compression strategies will be
tried, for example when there are several ways of pre-processing the input
data with a filter. The streams that will be discarded should then be freed
by calling deflateEnd. Note that deflateCopy duplicates the internal
compression state which can be quite large, so this strategy is slow and can
consume lots of memory.
 
deflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not
enough memory, Z_STREAM_ERROR if the source stream state was inconsistent
(such as zalloc being Z_NULL). msg is left unchanged in both source and
destination.
*/
 
ZEXTERN int ZEXPORT deflateReset OF((z_streamp strm));
/*
This function is equivalent to deflateEnd followed by deflateInit,
but does not free and reallocate all the internal compression state. The
stream will keep the same compression level and any other attributes that
may have been set by deflateInit2.
 
deflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
stream state was inconsistent (such as zalloc or state being Z_NULL).
*/
 
ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm,
int level,
int strategy));
/*
Dynamically update the compression level and compression strategy. The
interpretation of level and strategy is as in deflateInit2. This can be
used to switch between compression and straight copy of the input data, or
to switch to a different kind of input data requiring a different strategy.
If the compression level is changed, the input available so far is
compressed with the old level (and may be flushed); the new level will take
effect only at the next call of deflate().
 
Before the call of deflateParams, the stream state must be set as for
a call of deflate(), since the currently available input may have to be
compressed and flushed. In particular, strm->avail_out must be non-zero.
 
deflateParams returns Z_OK if success, Z_STREAM_ERROR if the source
stream state was inconsistent or if a parameter was invalid, Z_BUF_ERROR if
strm->avail_out was zero.
*/
 
ZEXTERN int ZEXPORT deflateTune OF((z_streamp strm,
int good_length,
int max_lazy,
int nice_length,
int max_chain));
/*
Fine tune deflate's internal compression parameters. This should only be
used by someone who understands the algorithm used by zlib's deflate for
searching for the best matching string, and even then only by the most
fanatic optimizer trying to squeeze out the last compressed bit for their
specific input data. Read the deflate.c source code for the meaning of the
max_lazy, good_length, nice_length, and max_chain parameters.
 
deflateTune() can be called after deflateInit() or deflateInit2(), and
returns Z_OK on success, or Z_STREAM_ERROR for an invalid deflate stream.
*/
 
ZEXTERN uLong ZEXPORT deflateBound OF((z_streamp strm,
uLong sourceLen));
/*
deflateBound() returns an upper bound on the compressed size after
deflation of sourceLen bytes. It must be called after deflateInit() or
deflateInit2(), and after deflateSetHeader(), if used. This would be used
to allocate an output buffer for deflation in a single pass, and so would be
called before deflate(). If that first deflate() call is provided the
sourceLen input bytes, an output buffer allocated to the size returned by
deflateBound(), and the flush value Z_FINISH, then deflate() is guaranteed
to return Z_STREAM_END. Note that it is possible for the compressed size to
be larger than the value returned by deflateBound() if flush options other
than Z_FINISH or Z_NO_FLUSH are used.
*/
 
ZEXTERN int ZEXPORT deflatePending OF((z_streamp strm,
unsigned *pending,
int *bits));
/*
deflatePending() returns the number of bytes and bits of output that have
been generated, but not yet provided in the available output. The bytes not
provided would be due to the available output space having being consumed.
The number of bits of output not provided are between 0 and 7, where they
await more bits to join them in order to fill out a full byte. If pending
or bits are Z_NULL, then those values are not set.
 
deflatePending returns Z_OK if success, or Z_STREAM_ERROR if the source
stream state was inconsistent.
*/
 
ZEXTERN int ZEXPORT deflatePrime OF((z_streamp strm,
int bits,
int value));
/*
deflatePrime() inserts bits in the deflate output stream. The intent
is that this function is used to start off the deflate output with the bits
leftover from a previous deflate stream when appending to it. As such, this
function can only be used for raw deflate, and must be used before the first
deflate() call after a deflateInit2() or deflateReset(). bits must be less
than or equal to 16, and that many of the least significant bits of value
will be inserted in the output.
 
deflatePrime returns Z_OK if success, Z_BUF_ERROR if there was not enough
room in the internal buffer to insert the bits, or Z_STREAM_ERROR if the
source stream state was inconsistent.
*/
 
ZEXTERN int ZEXPORT deflateSetHeader OF((z_streamp strm,
gz_headerp head));
/*
deflateSetHeader() provides gzip header information for when a gzip
stream is requested by deflateInit2(). deflateSetHeader() may be called
after deflateInit2() or deflateReset() and before the first call of
deflate(). The text, time, os, extra field, name, and comment information
in the provided gz_header structure are written to the gzip header (xflag is
ignored -- the extra flags are set according to the compression level). The
caller must assure that, if not Z_NULL, name and comment are terminated with
a zero byte, and that if extra is not Z_NULL, that extra_len bytes are
available there. If hcrc is true, a gzip header crc is included. Note that
the current versions of the command-line version of gzip (up through version
1.3.x) do not support header crc's, and will report that it is a "multi-part
gzip file" and give up.
 
If deflateSetHeader is not used, the default gzip header has text false,
the time set to zero, and os set to 255, with no extra, name, or comment
fields. The gzip header is returned to the default state by deflateReset().
 
deflateSetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source
stream state was inconsistent.
*/
 
/*
ZEXTERN int ZEXPORT inflateInit2 OF((z_streamp strm,
int windowBits));
 
This is another version of inflateInit with an extra parameter. The
fields next_in, avail_in, zalloc, zfree and opaque must be initialized
before by the caller.
 
The windowBits parameter is the base two logarithm of the maximum window
size (the size of the history buffer). It should be in the range 8..15 for
this version of the library. The default value is 15 if inflateInit is used
instead. windowBits must be greater than or equal to the windowBits value
provided to deflateInit2() while compressing, or it must be equal to 15 if
deflateInit2() was not used. If a compressed stream with a larger window
size is given as input, inflate() will return with the error code
Z_DATA_ERROR instead of trying to allocate a larger window.
 
windowBits can also be zero to request that inflate use the window size in
the zlib header of the compressed stream.
 
windowBits can also be -8..-15 for raw inflate. In this case, -windowBits
determines the window size. inflate() will then process raw deflate data,
not looking for a zlib or gzip header, not generating a check value, and not
looking for any check values for comparison at the end of the stream. This
is for use with other formats that use the deflate compressed data format
such as zip. Those formats provide their own check values. If a custom
format is developed using the raw deflate format for compressed data, it is
recommended that a check value such as an adler32 or a crc32 be applied to
the uncompressed data as is done in the zlib, gzip, and zip formats. For
most applications, the zlib format should be used as is. Note that comments
above on the use in deflateInit2() applies to the magnitude of windowBits.
 
windowBits can also be greater than 15 for optional gzip decoding. Add
32 to windowBits to enable zlib and gzip decoding with automatic header
detection, or add 16 to decode only the gzip format (the zlib format will
return a Z_DATA_ERROR). If a gzip stream is being decoded, strm->adler is a
crc32 instead of an adler32.
 
inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
memory, Z_VERSION_ERROR if the zlib library version is incompatible with the
version assumed by the caller, or Z_STREAM_ERROR if the parameters are
invalid, such as a null pointer to the structure. msg is set to null if
there is no error message. inflateInit2 does not perform any decompression
apart from possibly reading the zlib header if present: actual decompression
will be done by inflate(). (So next_in and avail_in may be modified, but
next_out and avail_out are unused and unchanged.) The current implementation
of inflateInit2() does not process any header information -- that is
deferred until inflate() is called.
*/
 
ZEXTERN int ZEXPORT inflateSetDictionary OF((z_streamp strm,
const Bytef *dictionary,
uInt dictLength));
/*
Initializes the decompression dictionary from the given uncompressed byte
sequence. This function must be called immediately after a call of inflate,
if that call returned Z_NEED_DICT. The dictionary chosen by the compressor
can be determined from the adler32 value returned by that call of inflate.
The compressor and decompressor must use exactly the same dictionary (see
deflateSetDictionary). For raw inflate, this function can be called at any
time to set the dictionary. If the provided dictionary is smaller than the
window and there is already data in the window, then the provided dictionary
will amend what's there. The application must insure that the dictionary
that was used for compression is provided.
 
inflateSetDictionary returns Z_OK if success, Z_STREAM_ERROR if a
parameter is invalid (e.g. dictionary being Z_NULL) or the stream state is
inconsistent, Z_DATA_ERROR if the given dictionary doesn't match the
expected one (incorrect adler32 value). inflateSetDictionary does not
perform any decompression: this will be done by subsequent calls of
inflate().
*/
 
ZEXTERN int ZEXPORT inflateGetDictionary OF((z_streamp strm,
Bytef *dictionary,
uInt *dictLength));
/*
Returns the sliding dictionary being maintained by inflate. dictLength is
set to the number of bytes in the dictionary, and that many bytes are copied
to dictionary. dictionary must have enough space, where 32768 bytes is
always enough. If inflateGetDictionary() is called with dictionary equal to
Z_NULL, then only the dictionary length is returned, and nothing is copied.
Similary, if dictLength is Z_NULL, then it is not set.
 
inflateGetDictionary returns Z_OK on success, or Z_STREAM_ERROR if the
stream state is inconsistent.
*/
 
ZEXTERN int ZEXPORT inflateSync OF((z_streamp strm));
/*
Skips invalid compressed data until a possible full flush point (see above
for the description of deflate with Z_FULL_FLUSH) can be found, or until all
available input is skipped. No output is provided.
 
inflateSync searches for a 00 00 FF FF pattern in the compressed data.
All full flush points have this pattern, but not all occurrences of this
pattern are full flush points.
 
inflateSync returns Z_OK if a possible full flush point has been found,
Z_BUF_ERROR if no more input was provided, Z_DATA_ERROR if no flush point
has been found, or Z_STREAM_ERROR if the stream structure was inconsistent.
In the success case, the application may save the current current value of
total_in which indicates where valid compressed data was found. In the
error case, the application may repeatedly call inflateSync, providing more
input each time, until success or end of the input data.
*/
 
ZEXTERN int ZEXPORT inflateCopy OF((z_streamp dest,
z_streamp source));
/*
Sets the destination stream as a complete copy of the source stream.
 
This function can be useful when randomly accessing a large stream. The
first pass through the stream can periodically record the inflate state,
allowing restarting inflate at those points when randomly accessing the
stream.
 
inflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not
enough memory, Z_STREAM_ERROR if the source stream state was inconsistent
(such as zalloc being Z_NULL). msg is left unchanged in both source and
destination.
*/
 
ZEXTERN int ZEXPORT inflateReset OF((z_streamp strm));
/*
This function is equivalent to inflateEnd followed by inflateInit,
but does not free and reallocate all the internal decompression state. The
stream will keep attributes that may have been set by inflateInit2.
 
inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
stream state was inconsistent (such as zalloc or state being Z_NULL).
*/
 
ZEXTERN int ZEXPORT inflateReset2 OF((z_streamp strm,
int windowBits));
/*
This function is the same as inflateReset, but it also permits changing
the wrap and window size requests. The windowBits parameter is interpreted
the same as it is for inflateInit2.
 
inflateReset2 returns Z_OK if success, or Z_STREAM_ERROR if the source
stream state was inconsistent (such as zalloc or state being Z_NULL), or if
the windowBits parameter is invalid.
*/
 
ZEXTERN int ZEXPORT inflatePrime OF((z_streamp strm,
int bits,
int value));
/*
This function inserts bits in the inflate input stream. The intent is
that this function is used to start inflating at a bit position in the
middle of a byte. The provided bits will be used before any bytes are used
from next_in. This function should only be used with raw inflate, and
should be used before the first inflate() call after inflateInit2() or
inflateReset(). bits must be less than or equal to 16, and that many of the
least significant bits of value will be inserted in the input.
 
If bits is negative, then the input stream bit buffer is emptied. Then
inflatePrime() can be called again to put bits in the buffer. This is used
to clear out bits leftover after feeding inflate a block description prior
to feeding inflate codes.
 
inflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source
stream state was inconsistent.
*/
 
ZEXTERN long ZEXPORT inflateMark OF((z_streamp strm));
/*
This function returns two values, one in the lower 16 bits of the return
value, and the other in the remaining upper bits, obtained by shifting the
return value down 16 bits. If the upper value is -1 and the lower value is
zero, then inflate() is currently decoding information outside of a block.
If the upper value is -1 and the lower value is non-zero, then inflate is in
the middle of a stored block, with the lower value equaling the number of
bytes from the input remaining to copy. If the upper value is not -1, then
it is the number of bits back from the current bit position in the input of
the code (literal or length/distance pair) currently being processed. In
that case the lower value is the number of bytes already emitted for that
code.
 
A code is being processed if inflate is waiting for more input to complete
decoding of the code, or if it has completed decoding but is waiting for
more output space to write the literal or match data.
 
inflateMark() is used to mark locations in the input data for random
access, which may be at bit positions, and to note those cases where the
output of a code may span boundaries of random access blocks. The current
location in the input stream can be determined from avail_in and data_type
as noted in the description for the Z_BLOCK flush parameter for inflate.
 
inflateMark returns the value noted above or -1 << 16 if the provided
source stream state was inconsistent.
*/
 
ZEXTERN int ZEXPORT inflateGetHeader OF((z_streamp strm,
gz_headerp head));
/*
inflateGetHeader() requests that gzip header information be stored in the
provided gz_header structure. inflateGetHeader() may be called after
inflateInit2() or inflateReset(), and before the first call of inflate().
As inflate() processes the gzip stream, head->done is zero until the header
is completed, at which time head->done is set to one. If a zlib stream is
being decoded, then head->done is set to -1 to indicate that there will be
no gzip header information forthcoming. Note that Z_BLOCK or Z_TREES can be
used to force inflate() to return immediately after header processing is
complete and before any actual data is decompressed.
 
The text, time, xflags, and os fields are filled in with the gzip header
contents. hcrc is set to true if there is a header CRC. (The header CRC
was valid if done is set to one.) If extra is not Z_NULL, then extra_max
contains the maximum number of bytes to write to extra. Once done is true,
extra_len contains the actual extra field length, and extra contains the
extra field, or that field truncated if extra_max is less than extra_len.
If name is not Z_NULL, then up to name_max characters are written there,
terminated with a zero unless the length is greater than name_max. If
comment is not Z_NULL, then up to comm_max characters are written there,
terminated with a zero unless the length is greater than comm_max. When any
of extra, name, or comment are not Z_NULL and the respective field is not
present in the header, then that field is set to Z_NULL to signal its
absence. This allows the use of deflateSetHeader() with the returned
structure to duplicate the header. However if those fields are set to
allocated memory, then the application will need to save those pointers
elsewhere so that they can be eventually freed.
 
If inflateGetHeader is not used, then the header information is simply
discarded. The header is always checked for validity, including the header
CRC if present. inflateReset() will reset the process to discard the header
information. The application would need to call inflateGetHeader() again to
retrieve the header from the next gzip stream.
 
inflateGetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source
stream state was inconsistent.
*/
 
/*
ZEXTERN int ZEXPORT inflateBackInit OF((z_streamp strm, int windowBits,
unsigned char FAR *window));
 
Initialize the internal stream state for decompression using inflateBack()
calls. The fields zalloc, zfree and opaque in strm must be initialized
before the call. If zalloc and zfree are Z_NULL, then the default library-
derived memory allocation routines are used. windowBits is the base two
logarithm of the window size, in the range 8..15. window is a caller
supplied buffer of that size. Except for special applications where it is
assured that deflate was used with small window sizes, windowBits must be 15
and a 32K byte window must be supplied to be able to decompress general
deflate streams.
 
See inflateBack() for the usage of these routines.
 
inflateBackInit will return Z_OK on success, Z_STREAM_ERROR if any of
the parameters are invalid, Z_MEM_ERROR if the internal state could not be
allocated, or Z_VERSION_ERROR if the version of the library does not match
the version of the header file.
*/
 
typedef unsigned (*in_func) OF((void FAR *,
z_const unsigned char FAR * FAR *));
typedef int (*out_func) OF((void FAR *, unsigned char FAR *, unsigned));
 
ZEXTERN int ZEXPORT inflateBack OF((z_streamp strm,
in_func in, void FAR *in_desc,
out_func out, void FAR *out_desc));
/*
inflateBack() does a raw inflate with a single call using a call-back
interface for input and output. This is potentially more efficient than
inflate() for file i/o applications, in that it avoids copying between the
output and the sliding window by simply making the window itself the output
buffer. inflate() can be faster on modern CPUs when used with large
buffers. inflateBack() trusts the application to not change the output
buffer passed by the output function, at least until inflateBack() returns.
 
inflateBackInit() must be called first to allocate the internal state
and to initialize the state with the user-provided window buffer.
inflateBack() may then be used multiple times to inflate a complete, raw
deflate stream with each call. inflateBackEnd() is then called to free the
allocated state.
 
A raw deflate stream is one with no zlib or gzip header or trailer.
This routine would normally be used in a utility that reads zip or gzip
files and writes out uncompressed files. The utility would decode the
header and process the trailer on its own, hence this routine expects only
the raw deflate stream to decompress. This is different from the normal
behavior of inflate(), which expects either a zlib or gzip header and
trailer around the deflate stream.
 
inflateBack() uses two subroutines supplied by the caller that are then
called by inflateBack() for input and output. inflateBack() calls those
routines until it reads a complete deflate stream and writes out all of the
uncompressed data, or until it encounters an error. The function's
parameters and return types are defined above in the in_func and out_func
typedefs. inflateBack() will call in(in_desc, &buf) which should return the
number of bytes of provided input, and a pointer to that input in buf. If
there is no input available, in() must return zero--buf is ignored in that
case--and inflateBack() will return a buffer error. inflateBack() will call
out(out_desc, buf, len) to write the uncompressed data buf[0..len-1]. out()
should return zero on success, or non-zero on failure. If out() returns
non-zero, inflateBack() will return with an error. Neither in() nor out()
are permitted to change the contents of the window provided to
inflateBackInit(), which is also the buffer that out() uses to write from.
The length written by out() will be at most the window size. Any non-zero
amount of input may be provided by in().
 
For convenience, inflateBack() can be provided input on the first call by
setting strm->next_in and strm->avail_in. If that input is exhausted, then
in() will be called. Therefore strm->next_in must be initialized before
calling inflateBack(). If strm->next_in is Z_NULL, then in() will be called
immediately for input. If strm->next_in is not Z_NULL, then strm->avail_in
must also be initialized, and then if strm->avail_in is not zero, input will
initially be taken from strm->next_in[0 .. strm->avail_in - 1].
 
The in_desc and out_desc parameters of inflateBack() is passed as the
first parameter of in() and out() respectively when they are called. These
descriptors can be optionally used to pass any information that the caller-
supplied in() and out() functions need to do their job.
 
On return, inflateBack() will set strm->next_in and strm->avail_in to
pass back any unused input that was provided by the last in() call. The
return values of inflateBack() can be Z_STREAM_END on success, Z_BUF_ERROR
if in() or out() returned an error, Z_DATA_ERROR if there was a format error
in the deflate stream (in which case strm->msg is set to indicate the nature
of the error), or Z_STREAM_ERROR if the stream was not properly initialized.
In the case of Z_BUF_ERROR, an input or output error can be distinguished
using strm->next_in which will be Z_NULL only if in() returned an error. If
strm->next_in is not Z_NULL, then the Z_BUF_ERROR was due to out() returning
non-zero. (in() will always be called before out(), so strm->next_in is
assured to be defined if out() returns non-zero.) Note that inflateBack()
cannot return Z_OK.
*/
 
ZEXTERN int ZEXPORT inflateBackEnd OF((z_streamp strm));
/*
All memory allocated by inflateBackInit() is freed.
 
inflateBackEnd() returns Z_OK on success, or Z_STREAM_ERROR if the stream
state was inconsistent.
*/
 
ZEXTERN uLong ZEXPORT zlibCompileFlags OF((void));
/* Return flags indicating compile-time options.
 
Type sizes, two bits each, 00 = 16 bits, 01 = 32, 10 = 64, 11 = other:
1.0: size of uInt
3.2: size of uLong
5.4: size of voidpf (pointer)
7.6: size of z_off_t
 
Compiler, assembler, and debug options:
8: DEBUG
9: ASMV or ASMINF -- use ASM code
10: ZLIB_WINAPI -- exported functions use the WINAPI calling convention
11: 0 (reserved)
 
One-time table building (smaller code, but not thread-safe if true):
12: BUILDFIXED -- build static block decoding tables when needed
13: DYNAMIC_CRC_TABLE -- build CRC calculation tables when needed
14,15: 0 (reserved)
 
Library content (indicates missing functionality):
16: NO_GZCOMPRESS -- gz* functions cannot compress (to avoid linking
deflate code when not needed)
17: NO_GZIP -- deflate can't write gzip streams, and inflate can't detect
and decode gzip streams (to avoid linking crc code)
18-19: 0 (reserved)
 
Operation variations (changes in library functionality):
20: PKZIP_BUG_WORKAROUND -- slightly more permissive inflate
21: FASTEST -- deflate algorithm with only one, lowest compression level
22,23: 0 (reserved)
 
The sprintf variant used by gzprintf (zero is best):
24: 0 = vs*, 1 = s* -- 1 means limited to 20 arguments after the format
25: 0 = *nprintf, 1 = *printf -- 1 means gzprintf() not secure!
26: 0 = returns value, 1 = void -- 1 means inferred string length returned
 
Remainder:
27-31: 0 (reserved)
*/
 
#ifndef Z_SOLO
 
/* utility functions */
 
/*
The following utility functions are implemented on top of the basic
stream-oriented functions. To simplify the interface, some default options
are assumed (compression level and memory usage, standard memory allocation
functions). The source code of these utility functions can be modified if
you need special options.
*/
 
ZEXTERN int ZEXPORT compress OF((Bytef *dest, uLongf *destLen,
const Bytef *source, uLong sourceLen));
/*
Compresses the source buffer into the destination buffer. sourceLen is
the byte length of the source buffer. Upon entry, destLen is the total size
of the destination buffer, which must be at least the value returned by
compressBound(sourceLen). Upon exit, destLen is the actual size of the
compressed buffer.
 
compress returns Z_OK if success, Z_MEM_ERROR if there was not
enough memory, Z_BUF_ERROR if there was not enough room in the output
buffer.
*/
 
ZEXTERN int ZEXPORT compress2 OF((Bytef *dest, uLongf *destLen,
const Bytef *source, uLong sourceLen,
int level));
/*
Compresses the source buffer into the destination buffer. The level
parameter has the same meaning as in deflateInit. sourceLen is the byte
length of the source buffer. Upon entry, destLen is the total size of the
destination buffer, which must be at least the value returned by
compressBound(sourceLen). Upon exit, destLen is the actual size of the
compressed buffer.
 
compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
memory, Z_BUF_ERROR if there was not enough room in the output buffer,
Z_STREAM_ERROR if the level parameter is invalid.
*/
 
ZEXTERN uLong ZEXPORT compressBound OF((uLong sourceLen));
/*
compressBound() returns an upper bound on the compressed size after
compress() or compress2() on sourceLen bytes. It would be used before a
compress() or compress2() call to allocate the destination buffer.
*/
 
ZEXTERN int ZEXPORT uncompress OF((Bytef *dest, uLongf *destLen,
const Bytef *source, uLong sourceLen));
/*
Decompresses the source buffer into the destination buffer. sourceLen is
the byte length of the source buffer. Upon entry, destLen is the total size
of the destination buffer, which must be large enough to hold the entire
uncompressed data. (The size of the uncompressed data must have been saved
previously by the compressor and transmitted to the decompressor by some
mechanism outside the scope of this compression library.) Upon exit, destLen
is the actual size of the uncompressed buffer.
 
uncompress returns Z_OK if success, Z_MEM_ERROR if there was not
enough memory, Z_BUF_ERROR if there was not enough room in the output
buffer, or Z_DATA_ERROR if the input data was corrupted or incomplete. In
the case where there is not enough room, uncompress() will fill the output
buffer with the uncompressed data up to that point.
*/
 
/* gzip file access functions */
 
/*
This library supports reading and writing files in gzip (.gz) format with
an interface similar to that of stdio, using the functions that start with
"gz". The gzip format is different from the zlib format. gzip is a gzip
wrapper, documented in RFC 1952, wrapped around a deflate stream.
*/
 
typedef struct gzFile_s *gzFile; /* semi-opaque gzip file descriptor */
 
/*
ZEXTERN gzFile ZEXPORT gzopen OF((const char *path, const char *mode));
 
Opens a gzip (.gz) file for reading or writing. The mode parameter is as
in fopen ("rb" or "wb") but can also include a compression level ("wb9") or
a strategy: 'f' for filtered data as in "wb6f", 'h' for Huffman-only
compression as in "wb1h", 'R' for run-length encoding as in "wb1R", or 'F'
for fixed code compression as in "wb9F". (See the description of
deflateInit2 for more information about the strategy parameter.) 'T' will
request transparent writing or appending with no compression and not using
the gzip format.
 
"a" can be used instead of "w" to request that the gzip stream that will
be written be appended to the file. "+" will result in an error, since
reading and writing to the same gzip file is not supported. The addition of
"x" when writing will create the file exclusively, which fails if the file
already exists. On systems that support it, the addition of "e" when
reading or writing will set the flag to close the file on an execve() call.
 
These functions, as well as gzip, will read and decode a sequence of gzip
streams in a file. The append function of gzopen() can be used to create
such a file. (Also see gzflush() for another way to do this.) When
appending, gzopen does not test whether the file begins with a gzip stream,
nor does it look for the end of the gzip streams to begin appending. gzopen
will simply append a gzip stream to the existing file.
 
gzopen can be used to read a file which is not in gzip format; in this
case gzread will directly read from the file without decompression. When
reading, this will be detected automatically by looking for the magic two-
byte gzip header.
 
gzopen returns NULL if the file could not be opened, if there was
insufficient memory to allocate the gzFile state, or if an invalid mode was
specified (an 'r', 'w', or 'a' was not provided, or '+' was provided).
errno can be checked to determine if the reason gzopen failed was that the
file could not be opened.
*/
 
ZEXTERN gzFile ZEXPORT gzdopen OF((int fd, const char *mode));
/*
gzdopen associates a gzFile with the file descriptor fd. File descriptors
are obtained from calls like open, dup, creat, pipe or fileno (if the file
has been previously opened with fopen). The mode parameter is as in gzopen.
 
The next call of gzclose on the returned gzFile will also close the file
descriptor fd, just like fclose(fdopen(fd, mode)) closes the file descriptor
fd. If you want to keep fd open, use fd = dup(fd_keep); gz = gzdopen(fd,
mode);. The duplicated descriptor should be saved to avoid a leak, since
gzdopen does not close fd if it fails. If you are using fileno() to get the
file descriptor from a FILE *, then you will have to use dup() to avoid
double-close()ing the file descriptor. Both gzclose() and fclose() will
close the associated file descriptor, so they need to have different file
descriptors.
 
gzdopen returns NULL if there was insufficient memory to allocate the
gzFile state, if an invalid mode was specified (an 'r', 'w', or 'a' was not
provided, or '+' was provided), or if fd is -1. The file descriptor is not
used until the next gz* read, write, seek, or close operation, so gzdopen
will not detect if fd is invalid (unless fd is -1).
*/
 
ZEXTERN int ZEXPORT gzbuffer OF((gzFile file, unsigned size));
/*
Set the internal buffer size used by this library's functions. The
default buffer size is 8192 bytes. This function must be called after
gzopen() or gzdopen(), and before any other calls that read or write the
file. The buffer memory allocation is always deferred to the first read or
write. Two buffers are allocated, either both of the specified size when
writing, or one of the specified size and the other twice that size when
reading. A larger buffer size of, for example, 64K or 128K bytes will
noticeably increase the speed of decompression (reading).
 
The new buffer size also affects the maximum length for gzprintf().
 
gzbuffer() returns 0 on success, or -1 on failure, such as being called
too late.
*/
 
ZEXTERN int ZEXPORT gzsetparams OF((gzFile file, int level, int strategy));
/*
Dynamically update the compression level or strategy. See the description
of deflateInit2 for the meaning of these parameters.
 
gzsetparams returns Z_OK if success, or Z_STREAM_ERROR if the file was not
opened for writing.
*/
 
ZEXTERN int ZEXPORT gzread OF((gzFile file, voidp buf, unsigned len));
/*
Reads the given number of uncompressed bytes from the compressed file. If
the input file is not in gzip format, gzread copies the given number of
bytes into the buffer directly from the file.
 
After reaching the end of a gzip stream in the input, gzread will continue
to read, looking for another gzip stream. Any number of gzip streams may be
concatenated in the input file, and will all be decompressed by gzread().
If something other than a gzip stream is encountered after a gzip stream,
that remaining trailing garbage is ignored (and no error is returned).
 
gzread can be used to read a gzip file that is being concurrently written.
Upon reaching the end of the input, gzread will return with the available
data. If the error code returned by gzerror is Z_OK or Z_BUF_ERROR, then
gzclearerr can be used to clear the end of file indicator in order to permit
gzread to be tried again. Z_OK indicates that a gzip stream was completed
on the last gzread. Z_BUF_ERROR indicates that the input file ended in the
middle of a gzip stream. Note that gzread does not return -1 in the event
of an incomplete gzip stream. This error is deferred until gzclose(), which
will return Z_BUF_ERROR if the last gzread ended in the middle of a gzip
stream. Alternatively, gzerror can be used before gzclose to detect this
case.
 
gzread returns the number of uncompressed bytes actually read, less than
len for end of file, or -1 for error.
*/
 
ZEXTERN int ZEXPORT gzwrite OF((gzFile file,
voidpc buf, unsigned len));
/*
Writes the given number of uncompressed bytes into the compressed file.
gzwrite returns the number of uncompressed bytes written or 0 in case of
error.
*/
 
ZEXTERN int ZEXPORTVA gzprintf Z_ARG((gzFile file, const char *format, ...));
/*
Converts, formats, and writes the arguments to the compressed file under
control of the format string, as in fprintf. gzprintf returns the number of
uncompressed bytes actually written, or 0 in case of error. The number of
uncompressed bytes written is limited to 8191, or one less than the buffer
size given to gzbuffer(). The caller should assure that this limit is not
exceeded. If it is exceeded, then gzprintf() will return an error (0) with
nothing written. In this case, there may also be a buffer overflow with
unpredictable consequences, which is possible only if zlib was compiled with
the insecure functions sprintf() or vsprintf() because the secure snprintf()
or vsnprintf() functions were not available. This can be determined using
zlibCompileFlags().
*/
 
ZEXTERN int ZEXPORT gzputs OF((gzFile file, const char *s));
/*
Writes the given null-terminated string to the compressed file, excluding
the terminating null character.
 
gzputs returns the number of characters written, or -1 in case of error.
*/
 
ZEXTERN char * ZEXPORT gzgets OF((gzFile file, char *buf, int len));
/*
Reads bytes from the compressed file until len-1 characters are read, or a
newline character is read and transferred to buf, or an end-of-file
condition is encountered. If any characters are read or if len == 1, the
string is terminated with a null character. If no characters are read due
to an end-of-file or len < 1, then the buffer is left untouched.
 
gzgets returns buf which is a null-terminated string, or it returns NULL
for end-of-file or in case of error. If there was an error, the contents at
buf are indeterminate.
*/
 
ZEXTERN int ZEXPORT gzputc OF((gzFile file, int c));
/*
Writes c, converted to an unsigned char, into the compressed file. gzputc
returns the value that was written, or -1 in case of error.
*/
 
ZEXTERN int ZEXPORT gzgetc OF((gzFile file));
/*
Reads one byte from the compressed file. gzgetc returns this byte or -1
in case of end of file or error. This is implemented as a macro for speed.
As such, it does not do all of the checking the other functions do. I.e.
it does not check to see if file is NULL, nor whether the structure file
points to has been clobbered or not.
*/
 
ZEXTERN int ZEXPORT gzungetc OF((int c, gzFile file));
/*
Push one character back onto the stream to be read as the first character
on the next read. At least one character of push-back is allowed.
gzungetc() returns the character pushed, or -1 on failure. gzungetc() will
fail if c is -1, and may fail if a character has been pushed but not read
yet. If gzungetc is used immediately after gzopen or gzdopen, at least the
output buffer size of pushed characters is allowed. (See gzbuffer above.)
The pushed character will be discarded if the stream is repositioned with
gzseek() or gzrewind().
*/
 
ZEXTERN int ZEXPORT gzflush OF((gzFile file, int flush));
/*
Flushes all pending output into the compressed file. The parameter flush
is as in the deflate() function. The return value is the zlib error number
(see function gzerror below). gzflush is only permitted when writing.
 
If the flush parameter is Z_FINISH, the remaining data is written and the
gzip stream is completed in the output. If gzwrite() is called again, a new
gzip stream will be started in the output. gzread() is able to read such
concatented gzip streams.
 
gzflush should be called only when strictly necessary because it will
degrade compression if called too often.
*/
 
/*
ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile file,
z_off_t offset, int whence));
 
Sets the starting position for the next gzread or gzwrite on the given
compressed file. The offset represents a number of bytes in the
uncompressed data stream. The whence parameter is defined as in lseek(2);
the value SEEK_END is not supported.
 
If the file is opened for reading, this function is emulated but can be
extremely slow. If the file is opened for writing, only forward seeks are
supported; gzseek then compresses a sequence of zeroes up to the new
starting position.
 
gzseek returns the resulting offset location as measured in bytes from
the beginning of the uncompressed stream, or -1 in case of error, in
particular if the file is opened for writing and the new starting position
would be before the current position.
*/
 
ZEXTERN int ZEXPORT gzrewind OF((gzFile file));
/*
Rewinds the given file. This function is supported only for reading.
 
gzrewind(file) is equivalent to (int)gzseek(file, 0L, SEEK_SET)
*/
 
/*
ZEXTERN z_off_t ZEXPORT gztell OF((gzFile file));
 
Returns the starting position for the next gzread or gzwrite on the given
compressed file. This position represents a number of bytes in the
uncompressed data stream, and is zero when starting, even if appending or
reading a gzip stream from the middle of a file using gzdopen().
 
gztell(file) is equivalent to gzseek(file, 0L, SEEK_CUR)
*/
 
/*
ZEXTERN z_off_t ZEXPORT gzoffset OF((gzFile file));
 
Returns the current offset in the file being read or written. This offset
includes the count of bytes that precede the gzip stream, for example when
appending or when using gzdopen() for reading. When reading, the offset
does not include as yet unused buffered input. This information can be used
for a progress indicator. On error, gzoffset() returns -1.
*/
 
ZEXTERN int ZEXPORT gzeof OF((gzFile file));
/*
Returns true (1) if the end-of-file indicator has been set while reading,
false (0) otherwise. Note that the end-of-file indicator is set only if the
read tried to go past the end of the input, but came up short. Therefore,
just like feof(), gzeof() may return false even if there is no more data to
read, in the event that the last read request was for the exact number of
bytes remaining in the input file. This will happen if the input file size
is an exact multiple of the buffer size.
 
If gzeof() returns true, then the read functions will return no more data,
unless the end-of-file indicator is reset by gzclearerr() and the input file
has grown since the previous end of file was detected.
*/
 
ZEXTERN int ZEXPORT gzdirect OF((gzFile file));
/*
Returns true (1) if file is being copied directly while reading, or false
(0) if file is a gzip stream being decompressed.
 
If the input file is empty, gzdirect() will return true, since the input
does not contain a gzip stream.
 
If gzdirect() is used immediately after gzopen() or gzdopen() it will
cause buffers to be allocated to allow reading the file to determine if it
is a gzip file. Therefore if gzbuffer() is used, it should be called before
gzdirect().
 
When writing, gzdirect() returns true (1) if transparent writing was
requested ("wT" for the gzopen() mode), or false (0) otherwise. (Note:
gzdirect() is not needed when writing. Transparent writing must be
explicitly requested, so the application already knows the answer. When
linking statically, using gzdirect() will include all of the zlib code for
gzip file reading and decompression, which may not be desired.)
*/
 
ZEXTERN int ZEXPORT gzclose OF((gzFile file));
/*
Flushes all pending output if necessary, closes the compressed file and
deallocates the (de)compression state. Note that once file is closed, you
cannot call gzerror with file, since its structures have been deallocated.
gzclose must not be called more than once on the same file, just as free
must not be called more than once on the same allocation.
 
gzclose will return Z_STREAM_ERROR if file is not valid, Z_ERRNO on a
file operation error, Z_MEM_ERROR if out of memory, Z_BUF_ERROR if the
last read ended in the middle of a gzip stream, or Z_OK on success.
*/
 
ZEXTERN int ZEXPORT gzclose_r OF((gzFile file));
ZEXTERN int ZEXPORT gzclose_w OF((gzFile file));
/*
Same as gzclose(), but gzclose_r() is only for use when reading, and
gzclose_w() is only for use when writing or appending. The advantage to
using these instead of gzclose() is that they avoid linking in zlib
compression or decompression code that is not used when only reading or only
writing respectively. If gzclose() is used, then both compression and
decompression code will be included the application when linking to a static
zlib library.
*/
 
ZEXTERN const char * ZEXPORT gzerror OF((gzFile file, int *errnum));
/*
Returns the error message for the last error which occurred on the given
compressed file. errnum is set to zlib error number. If an error occurred
in the file system and not in the compression library, errnum is set to
Z_ERRNO and the application may consult errno to get the exact error code.
 
The application must not modify the returned string. Future calls to
this function may invalidate the previously returned string. If file is
closed, then the string previously returned by gzerror will no longer be
available.
 
gzerror() should be used to distinguish errors from end-of-file for those
functions above that do not distinguish those cases in their return values.
*/
 
ZEXTERN void ZEXPORT gzclearerr OF((gzFile file));
/*
Clears the error and end-of-file flags for file. This is analogous to the
clearerr() function in stdio. This is useful for continuing to read a gzip
file that is being written concurrently.
*/
 
#endif /* !Z_SOLO */
 
/* checksum functions */
 
/*
These functions are not related to compression but are exported
anyway because they might be useful in applications using the compression
library.
*/
 
ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len));
/*
Update a running Adler-32 checksum with the bytes buf[0..len-1] and
return the updated checksum. If buf is Z_NULL, this function returns the
required initial value for the checksum.
 
An Adler-32 checksum is almost as reliable as a CRC32 but can be computed
much faster.
 
Usage example:
 
uLong adler = adler32(0L, Z_NULL, 0);
 
while (read_buffer(buffer, length) != EOF) {
adler = adler32(adler, buffer, length);
}
if (adler != original_adler) error();
*/
 
/*
ZEXTERN uLong ZEXPORT adler32_combine OF((uLong adler1, uLong adler2,
z_off_t len2));
 
Combine two Adler-32 checksums into one. For two sequences of bytes, seq1
and seq2 with lengths len1 and len2, Adler-32 checksums were calculated for
each, adler1 and adler2. adler32_combine() returns the Adler-32 checksum of
seq1 and seq2 concatenated, requiring only adler1, adler2, and len2. Note
that the z_off_t type (like off_t) is a signed integer. If len2 is
negative, the result has no meaning or utility.
*/
 
ZEXTERN uLong ZEXPORT crc32 OF((uLong crc, const Bytef *buf, uInt len));
/*
Update a running CRC-32 with the bytes buf[0..len-1] and return the
updated CRC-32. If buf is Z_NULL, this function returns the required
initial value for the crc. Pre- and post-conditioning (one's complement) is
performed within this function so it shouldn't be done by the application.
 
Usage example:
 
uLong crc = crc32(0L, Z_NULL, 0);
 
while (read_buffer(buffer, length) != EOF) {
crc = crc32(crc, buffer, length);
}
if (crc != original_crc) error();
*/
 
/*
ZEXTERN uLong ZEXPORT crc32_combine OF((uLong crc1, uLong crc2, z_off_t len2));
 
Combine two CRC-32 check values into one. For two sequences of bytes,
seq1 and seq2 with lengths len1 and len2, CRC-32 check values were
calculated for each, crc1 and crc2. crc32_combine() returns the CRC-32
check value of seq1 and seq2 concatenated, requiring only crc1, crc2, and
len2.
*/
 
 
/* various hacks, don't look :) */
 
/* deflateInit and inflateInit are macros to allow checking the zlib version
* and the compiler's view of z_stream:
*/
ZEXTERN int ZEXPORT deflateInit_ OF((z_streamp strm, int level,
const char *version, int stream_size));
ZEXTERN int ZEXPORT inflateInit_ OF((z_streamp strm,
const char *version, int stream_size));
ZEXTERN int ZEXPORT deflateInit2_ OF((z_streamp strm, int level, int method,
int windowBits, int memLevel,
int strategy, const char *version,
int stream_size));
ZEXTERN int ZEXPORT inflateInit2_ OF((z_streamp strm, int windowBits,
const char *version, int stream_size));
ZEXTERN int ZEXPORT inflateBackInit_ OF((z_streamp strm, int windowBits,
unsigned char FAR *window,
const char *version,
int stream_size));
#define deflateInit(strm, level) \
deflateInit_((strm), (level), ZLIB_VERSION, (int)sizeof(z_stream))
#define inflateInit(strm) \
inflateInit_((strm), ZLIB_VERSION, (int)sizeof(z_stream))
#define deflateInit2(strm, level, method, windowBits, memLevel, strategy) \
deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\
(strategy), ZLIB_VERSION, (int)sizeof(z_stream))
#define inflateInit2(strm, windowBits) \
inflateInit2_((strm), (windowBits), ZLIB_VERSION, \
(int)sizeof(z_stream))
#define inflateBackInit(strm, windowBits, window) \
inflateBackInit_((strm), (windowBits), (window), \
ZLIB_VERSION, (int)sizeof(z_stream))
 
#ifndef Z_SOLO
 
/* gzgetc() macro and its supporting function and exposed data structure. Note
* that the real internal state is much larger than the exposed structure.
* This abbreviated structure exposes just enough for the gzgetc() macro. The
* user should not mess with these exposed elements, since their names or
* behavior could change in the future, perhaps even capriciously. They can
* only be used by the gzgetc() macro. You have been warned.
*/
struct gzFile_s {
unsigned have;
unsigned char *next;
z_off64_t pos;
};
ZEXTERN int ZEXPORT gzgetc_ OF((gzFile file)); /* backward compatibility */
#ifdef Z_PREFIX_SET
# undef z_gzgetc
# define z_gzgetc(g) \
((g)->have ? ((g)->have--, (g)->pos++, *((g)->next)++) : gzgetc(g))
#else
# define gzgetc(g) \
((g)->have ? ((g)->have--, (g)->pos++, *((g)->next)++) : gzgetc(g))
#endif
 
/* provide 64-bit offset functions if _LARGEFILE64_SOURCE defined, and/or
* change the regular functions to 64 bits if _FILE_OFFSET_BITS is 64 (if
* both are true, the application gets the *64 functions, and the regular
* functions are changed to 64 bits) -- in case these are set on systems
* without large file support, _LFS64_LARGEFILE must also be true
*/
#ifdef Z_LARGE64
ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));
ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));
ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off64_t));
ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off64_t));
#endif
 
#if !defined(ZLIB_INTERNAL) && defined(Z_WANT64)
# ifdef Z_PREFIX_SET
# define z_gzopen z_gzopen64
# define z_gzseek z_gzseek64
# define z_gztell z_gztell64
# define z_gzoffset z_gzoffset64
# define z_adler32_combine z_adler32_combine64
# define z_crc32_combine z_crc32_combine64
# else
# define gzopen gzopen64
# define gzseek gzseek64
# define gztell gztell64
# define gzoffset gzoffset64
# define adler32_combine adler32_combine64
# define crc32_combine crc32_combine64
# endif
# ifndef Z_LARGE64
ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
ZEXTERN z_off_t ZEXPORT gzseek64 OF((gzFile, z_off_t, int));
ZEXTERN z_off_t ZEXPORT gztell64 OF((gzFile));
ZEXTERN z_off_t ZEXPORT gzoffset64 OF((gzFile));
ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
# endif
#else
ZEXTERN gzFile ZEXPORT gzopen OF((const char *, const char *));
ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile, z_off_t, int));
ZEXTERN z_off_t ZEXPORT gztell OF((gzFile));
ZEXTERN z_off_t ZEXPORT gzoffset OF((gzFile));
ZEXTERN uLong ZEXPORT adler32_combine OF((uLong, uLong, z_off_t));
ZEXTERN uLong ZEXPORT crc32_combine OF((uLong, uLong, z_off_t));
#endif
 
#else /* Z_SOLO */
 
ZEXTERN uLong ZEXPORT adler32_combine OF((uLong, uLong, z_off_t));
ZEXTERN uLong ZEXPORT crc32_combine OF((uLong, uLong, z_off_t));
 
#endif /* !Z_SOLO */
 
/* hack for buggy compilers */
#if !defined(ZUTIL_H) && !defined(NO_DUMMY_DECL)
struct internal_state {int dummy;};
#endif
 
/* undocumented functions */
ZEXTERN const char * ZEXPORT zError OF((int));
ZEXTERN int ZEXPORT inflateSyncPoint OF((z_streamp));
ZEXTERN const z_crc_t FAR * ZEXPORT get_crc_table OF((void));
ZEXTERN int ZEXPORT inflateUndermine OF((z_streamp, int));
ZEXTERN int ZEXPORT inflateResetKeep OF((z_streamp));
ZEXTERN int ZEXPORT deflateResetKeep OF((z_streamp));
#if defined(_WIN32) && !defined(Z_SOLO)
ZEXTERN gzFile ZEXPORT gzopen_w OF((const wchar_t *path,
const char *mode));
#endif
#if defined(STDC) || defined(Z_HAVE_STDARG_H)
# ifndef Z_SOLO
ZEXTERN int ZEXPORTVA gzvprintf Z_ARG((gzFile file,
const char *format,
va_list va));
# endif
#endif
 
#ifdef __cplusplus
}
#endif
 
#endif /* ZLIB_H */
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