Subversion Repositories SvarDOS

/*

 * This file is part of pkg (SvarDOS)

 * Copyright (C) 2013-2024 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, const char *field, char *result, size_t result_maxlen) {

  char linebuff[128];

  char *valuestr;

  FILE *fd;

  /* open the file */

  fd = fopen(filename, "rb");

  result[0] = 0; /* reset fields to be read to empty values (now in case it is the same ptr as filename) */

  if (fd == NULL) return(-1);

  /* read the LSM file line by line */

  while (freadtokval(fd, linebuff, sizeof(linebuff), &valuestr, ':') == 0) {

    if (valuestr == NULL) continue;

    if (strcasecmp(linebuff, field) == 0) {

      snprintf(result, result_maxlen, "%s", valuestr);

      break;

    }

  }

  fclose(fd);

  return(0);

}