Function NewHogFile

legacy/hogmaker/hog.cpp:144–253

#define HOGMAKER_COPY 5

int NewHogFile(const char *hogname, int nfiles, const char **filenames) {
  unsigned i;
  int table_pos;
  FILE *hog_fp;
  tHogHeader header;
  tHogFileEntry *table;
  char ext[_MAX_EXT];

  //	allocate file table
  if (nfiles <= 0)
    return HOGMAKER_ERROR;

  table = new tHogFileEntry[nfiles];
  if (!table)
    return HOGMAKER_MEMORY;

  //	create new file
  hog_fp = fopen(hogname, "wb");
  if (hog_fp == NULL) {
    delete[] table;
    return HOGMAKER_OUTFILE;
  }

  // write the tag
  if (!fwrite(HOG_TAG_STR, strlen(HOG_TAG_STR), 1, hog_fp)) {
    delete[] table;
    fclose(hog_fp);
    return HOGMAKER_OUTFILE;
  }

  // write number of files
  uint8_t filler = 0xff;
  header.nfiles = (unsigned)nfiles;
  header.file_data_offset = strlen(HOG_TAG_STR) + HOG_HDR_SIZE + (sizeof(tHogFileEntry) * header.nfiles);

  if (!fwrite(&header.nfiles, sizeof(header.nfiles), 1, hog_fp)) {
    delete[] table;
    fclose(hog_fp);
    return HOGMAKER_OUTFILE;
  }
  if (!fwrite(&header.file_data_offset, sizeof(header.file_data_offset), 1, hog_fp)) {
    delete[] table;
    fclose(hog_fp);
    return HOGMAKER_OUTFILE;
  }
  if (!fwrite(&filler, sizeof(uint8_t), HOG_HDR_SIZE - sizeof(tHogHeader), hog_fp)) {
    delete[] table;
    fclose(hog_fp);
    return HOGMAKER_OUTFILE;
  }

  // save file position of index table and write out dummy table
  table_pos = strlen(HOG_TAG_STR) + HOG_HDR_SIZE;

  memset(&table[0], 0, sizeof(table[0]));

  for (i = 0; i < header.nfiles; i++) {
    if (!WRITE_FILE_ENTRY(hog_fp, &table[0])) {