Subversion Repositories SvarDOS

/*

 * This file is part of PKG (SvarDOS)

 * Copyright (C) 2013-2024 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 "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\\appinfo", dosdir);

  dp = opendir(buff);

  if (dp == NULL) {

    output(svarlang_str(9,0)); /* "ERROR: Could not access directory */

    output(" ");

    outputnl(buff);

    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, ".lsm") != 0) continue;  /* if not an .lsm file, skip it silently */

    ep->d_name[tlen - 4] = 0; /* trim out the ".lsm" suffix */

    if (filterstr != NULL) {

      if (fdnpkg_strcasestr(ep->d_name, filterstr) == NULL) continue; /* skip if not matching the non-NULL filter */

    }

    /* load the metadata from %DOSDIR\APPINFO\*.lsm */

    sprintf(buff, "%s\\appinfo\\%s.lsm", dosdir, ep->d_name);

    readlsm(buff, "version", ver, sizeof(ver));

    readlsm(buff, "description", buff, 80 - 2 - strlen(ver) - strlen(ep->d_name));

    output(ep->d_name);

    output(" ");

    output(ver);

    output(" ");

    outputnl(buff);

    matchfound = 1;

  }

  if (matchfound == 0) outputnl(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) {

    sprintf(buff, "%s\\appinfo\\%s.lsm", dosdir, pkgname);

    fd = fopen(buff, "rb");

    if (fd == NULL) {

      sprintf(buff, svarlang_str(9, 1), pkgname); /* "ERROR: Local package '%s' not found." */

      outputnl(buff);

      return(NULL);

    }

  }

  /* iterate through all lines of the file */

  while (freadtokval(fd, buff, sizeof(buff), NULL, 0) == 0) {

    /* skip empty lines */

    if (buff[0] == 0) continue;

    /* normalize slashes to backslashes */

    slash2backslash(buff);

    /* skip garbage */

    if ((buff[1] != ':') || (buff[2] != '\\')) continue;

    /* skip directories */

    if (buff[strlen(buff) - 1] == '\\') continue;

    /* trim ? trailer (may contain the file's CRC) */

    trimfnamecrc(buff);

    /* add the new node to the result */

    newnode = malloc(sizeof(struct flist_t) + strlen(buff));

    if (newnode == NULL) {

      outputnl(svarlang_str(2,14));  /* "Out of memory!" */

      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) {

    outputnl(flist_ptr->fname);

  }

  /* free the list of files */

  pkg_freeflist(flist);

  return(0);

}