Subversion Repositories SvarDOS

#ifndef HELPERS_H

#define HELPERS_H

/* case-insensitive comparison of strings, returns non-zero on equality */

int imatch(const char *s1, const char *s2);

/* returns zero if s1 starts with s2 */

int strstartswith(const char *s1, const char *s2);

/* outputs a NULL-terminated string to stdout */

void output_internal(const char *s, unsigned short nl);

#define output(x) output_internal(x, 0)

#define outputnl(x) output_internal(x, 1)

/*

 * FileInfoRec (DTA) format:

 * offset size desc

 *    +0   21  reserved

 *  +15h    1  file attr (1=RO 2=Hidden 4=System 8=VOL 16=DIR 32=Archive

 *  +16h    2  time: bits 0-4=bi-seconds (0-30), bits 5-10=minutes (0-59), bits 11-15=hour (0-23)

 *  +18h    2  date: bits 0-4=day(0-31), bits 5-8=month (1-12), bits 9-15=years since 1980

 *  +1ah    4  DWORD file size, in bytes

 *  +1eh   13  13-bytes max ASCIIZ filename

 */

_Packed struct DTA {

  char reserved[21];

  unsigned char attr;

  unsigned short time;

  unsigned short date;

  unsigned long size;

  char fname[13];

};

#define DOS_ATTR_RO   1

#define DOS_ATTR_HID  2

#define DOS_ATTR_SYS  4

#define DOS_ATTR_VOL  8

#define DOS_ATTR_DIR 16

#define DOS_ATTR_ARC 32

/* find first matching files using a FindFirst DOS call

 * returns 0 on success or a DOS err code on failure */

unsigned short findfirst(struct DTA *dta, const char *pattern, unsigned short attr);

/* find next matching, ie. continues an action intiated by findfirst() */

unsigned short findnext(struct DTA *dta);

/* print s string and wait for a single key press from stdin. accepts only

 * key presses defined in the c ASCIIZ string. returns offset of pressed key

 * in string. keys in c MUST BE UPPERCASE! */

unsigned short askchoice(const char *s, const char *c);

/* converts a path to its canonic representation */

void file_truename(const char *src, char *dst);

/* returns DOS attributes of file, or -1 on error */

int file_getattr(const char *fname);

#endif