int tinydir_file_open()

in include/singa/utils/tinydir.h [414:483]

• 59 lines of code
• 11 McCabe index (conditional complexity)

int tinydir_file_open(tinydir_file *file, const char *path) {
  tinydir_dir dir;
  int result = 0;
  int found = 0;
  char dir_name_buf[_TINYDIR_PATH_MAX];
  char file_name_buf[_TINYDIR_FILENAME_MAX];
  char *dir_name;
  char *base_name;
#ifdef _WIN32
  char drive_buf[_TINYDIR_PATH_MAX];
  char ext_buf[_TINYDIR_FILENAME_MAX];
#endif

  if (file == NULL || path == NULL || strlen(path) == 0) {
    errno = EINVAL;
    return -1;
  }
  if (strlen(path) + _TINYDIR_PATH_EXTRA >= _TINYDIR_PATH_MAX) {
    errno = ENAMETOOLONG;
    return -1;
  }

/* Get the parent path */
#ifdef _WIN32
  if (_splitpath_s(path, drive_buf, sizeof drive_buf, dir_name_buf,
                   sizeof dir_name_buf, file_name_buf, sizeof file_name_buf,
                   ext_buf, sizeof ext_buf)) {
    errno = EINVAL;
    return -1;
  }
  /* Concatenate the drive letter and dir name to form full dir name */
  strcat(drive_buf, dir_name_buf);
  dir_name = drive_buf;
  /* Concatenate the file name and extension to form base name */
  strcat(file_name_buf, ext_buf);
  base_name = file_name_buf;
#else
  strcpy(dir_name_buf, path);
  dir_name = dirname(dir_name_buf);
  strcpy(file_name_buf, path);
  base_name = basename(file_name_buf);
#endif

  /* Open the parent directory */
  if (tinydir_open(&dir, dir_name) == -1) {
    return -1;
  }

  /* Read through the parent directory and look for the file */
  while (dir.has_next) {
    if (tinydir_readfile(&dir, file) == -1) {
      result = -1;
      goto bail;
    }
    if (strcmp(file->name, base_name) == 0) {
      /* File found */
      found = 1;
      goto bail;
    }
    tinydir_next(&dir);
  }
  if (!found) {
    result = -1;
    errno = ENOENT;
  }

bail:
  tinydir_close(&dir);
  return result;
}