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<?php |
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namespace Acquia\DF; |
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/** |
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* Contains methods for parsing and dumping data in the legacy info file format. |
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*/ |
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class IniEncoder { |
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/** |
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* Serializes an array to legacy make format. |
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* |
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* @param array $input |
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* The data to serialize. |
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* |
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* @return string |
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* The serialized data. |
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*/ |
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public function encode(array $input) { |
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return implode("\n", $this->doEncode($input)); |
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} |
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/** |
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* Recursively serializes data to legacy make format. |
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* |
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* @param array $input |
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* The data to serialize. |
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* @param array $keys |
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* The current key path. |
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* |
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* @return string[] |
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* The serialized data as a flat array of lines. |
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*/ |
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protected function doEncode(array $input, array $keys = []) { |
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$output = []; |
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foreach ($input as $key => $value) { |
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$keys[] = $key; |
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if (is_array($value)) { |
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if ($this->isAssociative($value)) { |
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$output = array_merge($output, $this->doEncode($value, $keys)); |
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} |
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else { |
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foreach ($value as $j) { |
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$output[] = $this->keysToString($keys) . '[] = ' . $j; |
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} |
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} |
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} |
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else { |
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$output[] = $this->keysToString($keys) . ' = ' . $value; |
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} |
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array_pop($keys); |
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} |
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return $output; |
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} |
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/** |
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* Transforms an key path to a string. |
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* |
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* @param string[] $keys |
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* The key path. |
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* |
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* @return string |
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* The flattened key path. |
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*/ |
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protected function keysToString(array $keys) { |
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$head = array_shift($keys); |
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if ($keys) { |
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return $head . '[' . implode('][', $keys) . ']'; |
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} |
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else { |
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return $head; |
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} |
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} |
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/** |
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* Tests if an array is associative. |
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* |
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* @param array $input |
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* The array to test. |
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* |
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* @return bool |
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* Whether or not the array has non-numeric keys. |
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*/ |
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protected function isAssociative(array $input) { |
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$keys = implode('', array_keys($input)); |
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return !is_numeric($keys); |
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} |
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/** |
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* Parses data in Drupal's .info format. |
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* |
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* @see https://api.drupal.org/api/drupal/includes!common.inc/function/drupal_parse_info_format/7.x |
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* |
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* @param string $data |
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* A string to parse. |
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* |
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* @return array |
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* The parsed data. |
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*/ |
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public function parse($data) { |
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$info = array(); |
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if (preg_match_all(' |
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@^\s* # Start at the beginning of a line, ignoring leading whitespace |
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((?: |
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[^=;\[\]]| # Key names cannot contain equal signs, semi-colons or square brackets, |
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\[[^\[\]]*\] # unless they are balanced and not nested |
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)+?) |
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\s*=\s* # Key/value pairs are separated by equal signs (ignoring white-space) |
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(?: |
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("(?:[^"]|(?<=\\\\)")*")| # Double-quoted string, which may contain slash-escaped quotes/slashes |
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(\'(?:[^\']|(?<=\\\\)\')*\')| # Single-quoted string, which may contain slash-escaped quotes/slashes |
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([^\r\n]*?) # Non-quoted string |
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)\s*$ # Stop at the next end of a line, ignoring trailing whitespace |
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@msx', $data, $matches, PREG_SET_ORDER)) { |
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foreach ($matches as $match) { |
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// Fetch the key and value string. |
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$i = 0; |
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foreach (['key', 'value1', 'value2', 'value3'] as $var) { |
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$$var = isset($match[++$i]) ? $match[$i] : ''; |
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} |
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$value = stripslashes(substr($value1, 1, -1)) . stripslashes(substr($value2, 1, -1)) . $value3; |
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// Parse array syntax. |
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$keys = preg_split('/\]?\[/', rtrim($key, ']')); |
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$last = array_pop($keys); |
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$parent = &$info; |
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// Create nested arrays. |
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foreach ($keys as $key) { |
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if ($key == '') { |
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$key = count($parent); |
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} |
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if (!isset($parent[$key]) || !is_array($parent[$key])) { |
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$parent[$key] = []; |
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} |
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$parent = &$parent[$key]; |
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} |
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// Handle PHP constants. |
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if (preg_match('/^\w+$/i', $value) && defined($value)) { |
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$value = constant($value); |
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} |
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// Insert actual value. |
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if ($last == '') { |
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$last = count($parent); |
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} |
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$parent[$last] = $value; |
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} |
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} |
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return $info; |
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} |
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160
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} |
acquia /
df
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