function backdrop_parse_info_format

Parses data in Backdrop's .info format.

Data should be in an .ini-like format to specify values. White-space generally doesn't matter, except inside values:

  key = value
  key = "value"
  key = 'value'
  key = "multi-line
  value"
  key = 'multi-line
  value'
  key
  =
  'value'

Arrays are created using a HTTP GET alike syntax:

  key[] = "numeric array"
  key[index] = "associative array"
  key[index][] = "nested numeric array"
  key[index][index] = "nested associative array"

PHP constants are substituted in, but only when used as the entire value. Comments should start with a semi-colon at the beginning of a line.

Parameters

string $data: A string to parse.

bool $process_sections: Flag indicating if sections should be parsed.

Return value

The info array.:

See also

backdrop_parse_info_file()

File

core/includes/common.inc, line 8472

Common functions that many Backdrop modules will need to reference.

Code

function backdrop_parse_info_format($data, $process_sections = FALSE) {
  $info = array();

  // Separate by sections and parse individually if requested.
  if ($process_sections) {
    // Remove leading a trailing comments before groups.
    $data = trim(preg_replace('/;.*$/m', '', $data));

    // Split the content by the groups present.
    $split = preg_split('/^\[(.*)\]\s*$/m', $data, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE);
    $split_count = count($split);

    // If sections are found, parse each individually and add to the result.
    if ($split_count > 1) {
      $info_sections = array();
      for ($n = 0; $n < $split_count; $n = $n + 2) {
        $info_sections[$split[$n]] = backdrop_parse_info_format($split[$n + 1], FALSE);
      }
      return $info_sections;
    }
  }

  if (preg_match_all('
    @^\s*                           # Start at the beginning of a line, ignoring leading whitespace
    ((?:
      [^=;\[\]]|                    # Key names cannot contain equal signs, semi-colons or square brackets,
      \[[^\[\]]*\]                  # unless they are balanced and not nested
    )+?)
    \s*=\s*                         # Key/value pairs are separated by equal signs (ignoring white-space)
    (?:
      ("(?:[^"]|(?<=\\\\)")*")|     # Double-quoted string, which may contain slash-escaped quotes/slashes
      (\'(?:[^\']|(?<=\\\\)\')*\')| # Single-quoted string, which may contain slash-escaped quotes/slashes
      ([^\r\n]*?)                   # Non-quoted string
    )\s*$                           # Stop at the next end of a line, ignoring trailing whitespace
    @msx', $data, $matches, PREG_SET_ORDER)) {
    foreach ($matches as $match) {
      // Fetch the key and value string.
      $i = 0;
      $parts = array();
      foreach (array('key', 'value1', 'value2', 'value3') as $var) {
        $parts[$var] = isset($match[++$i]) ? $match[$i] : '';
      }
      $value = stripslashes(substr($parts['value1'], 1, -1)) . stripslashes(substr($parts['value2'], 1, -1)) . $parts['value3'];

      // Parse array syntax.
      $keys = preg_split('/\]?\[/', rtrim($parts['key'], ']'));
      $last = array_pop($keys);
      $parent = &$info;

      // Create nested arrays.
      foreach ($keys as $key) {
        if ($key == '') {
          $key = count($parent);
        }
        if (!isset($parent[$key]) || !is_array($parent[$key])) {
          $parent[$key] = array();
        }
        $parent = &$parent[$key];
      }

      // Handle PHP constants.
      if (preg_match('/^\w+$/', $value) && defined($value)) {
        $value = constant($value);
      }

      // Insert actual value.
      if ($last == '') {
        $last = count($parent);
      }
      $parent[$last] = $value;
    }
  }

  return $info;
}