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/*
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 * This file is part of pkg (SvarDOS)
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 * Copyright (C) 2013-2021 Mateusz Viste
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 */
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#include <stdio.h>   /* fopen, fclose... */
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#include <string.h>  /* strcasecmp() */
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#include "helpers.h"
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#include "lsm.h"     /* include self for control */
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/* Loads metadata from an LSM file. Returns 0 on success, non-zero on error. */
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int readlsm(const char *filename, char *version, size_t version_maxlen) {
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  char linebuff[128];
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  char *valuestr;
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  FILE *fd;
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  /* reset fields to be read to empty values */
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  version[0] = 0;
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  /* open the file */
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  fd = fopen(filename, "rb");
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  if (fd == NULL) return(-1);
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  /* read the LSM file line by line */
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  while (freadtokval(fd, linebuff, sizeof(linebuff), &valuestr, ':') == 0) {
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    if (valuestr != NULL) {
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      if (strcasecmp(linebuff, "version") == 0) snprintf(version, version_maxlen, "%s", valuestr);
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    }
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  }
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  fclose(fd);
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  return(0);
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}