189 lines
6.8 KiB
PHP
189 lines
6.8 KiB
PHP
<?php
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/**
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* @file
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* General GeSHi filter helper functions.
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*/
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function _geshifilter_get_geshi_dir() {
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return variable_get('geshifilter_geshi_dir', drupal_get_path('module', 'geshifilter') .'/geshi');
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}
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/**
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* Helper function for loading/checking the GeSHi library v 1.0.x (if not already)
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* Returns an array with keys 'success', 'loaded' and 'message'
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*/
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function _geshifilter_check_geshi_library($use_cache=TRUE, $geshi_dir=NULL, $load_when_found=TRUE) {
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static $geshi_library_cache = NULL;
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if ($use_cache && $geshi_library_cache !== NULL) {
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// get from cache
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$geshi_library = $geshi_library_cache;
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}
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else {
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// initialisation
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$geshi_library = array('success' => NULL, 'loaded' => FALSE, 'message' => NULL);
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// no cache
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if (!$geshi_dir) {
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$geshi_dir = _geshifilter_get_geshi_dir();
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}
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if (!is_dir($geshi_dir)) {
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$geshi_library['success'] = FALSE;
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$geshi_library['message'] = t('GeSHi library error: %dir is not a directory.', array('%dir' => $geshi_dir));
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}
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elseif (is_file($geshi_dir .'/geshi.php')) {
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// GeSHi 1.0.x found (probably, we can only be sure by loading it)
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$geshi_library['success'] = TRUE;
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if ($load_when_found) {
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require_once($geshi_dir .'/geshi.php');
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// check version
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$geshi_library_version = explode('.', GESHI_VERSION);
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if (!($geshi_library_version[0] == '1' && $geshi_library_version[1] == '0')) {
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$geshi_library['success'] = FALSE;
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$geshi_library['loaded'] = FALSE;
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$geshi_library['message'] = t('GeSHi library error: The detected version of GeSHi library (%version) is not supported. A version from the 1.0.x branch is required.', array('%version' => GESHI_VERSION));
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}
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else {
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$geshi_library['loaded'] = TRUE;
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}
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}
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}
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else {
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$geshi_library['success'] = FALSE;
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$geshi_library['message'] = t('GeSHi library error: Could not find a known version of the GeSHi library in directory %dir.' , array('%dir' => $geshi_dir));
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}
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// store in cache if needed
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if ($use_cache) {
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$geshi_library_cache = $geshi_library;
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}
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}
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return $geshi_library;
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}
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/**
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* List of available languages.
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* @return an array mapping language code to array with the language path and full language name
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*/
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function _geshifilter_get_available_languages() {
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// try to get it from cache (database actually)
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$available_languages = variable_get('geshifilter_available_languages_cache', NULL);
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if ($available_languages === NULL) {
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// not in cache: build the array of available_languages
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$geshi_library = _geshifilter_check_geshi_library();
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$available_languages = array();
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if ($geshi_library['success']) {
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$dirs = array(_geshifilter_get_geshi_dir() .'/geshi', drupal_get_path('module', 'geshifilter') .'/geshi-extra');
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foreach ($dirs as $dir) {
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foreach (file_scan_directory($dir, '\.[pP][hH][pP]$') as $filename => $fileinfo) {
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// short name
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$name = $fileinfo->name;
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// get full name
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$geshi = new GeSHi('', $name);
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$geshi->set_language_path($dir);
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$fullname = $geshi->get_language_name();
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unset($geshi);
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// store
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$available_languages[$name] = array('language_path' => $dir, 'fullname' => $fullname);
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}
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}
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ksort($available_languages);
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// save array to database
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variable_set('geshifilter_available_languages_cache', $available_languages);
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}
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}
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return $available_languages;
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}
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/**
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* List of enabled languages.
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* (with caching)
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* @return array with enabled languages mapping language code to full name.
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*/
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function _geshifilter_get_enabled_languages() {
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static $enabled_languages = NULL;
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if ($enabled_languages === NULL) {
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$enabled_languages = array();
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$languages = _geshifilter_get_available_languages();
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foreach ($languages as $language => $language_data) {
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if (variable_get('geshifilter_language_enabled_'. $language, FALSE)) {
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$enabled_languages[$language] = $language_data['fullname'];
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}
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}
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}
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return $enabled_languages;
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}
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/**
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* Helper function for gettings the tags
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* (with caching)
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*/
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function _geshifilter_get_tags($format) {
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static $geshifilter_tags_cache = array();
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if (!isset($geshifilter_tags_cache[$format])) {
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$generic_code_tags = _geshifilter_tag_split(geshifilter_tags($format));
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$language_tags = array();
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$tag_to_lang = array();
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$enabled_languages = _geshifilter_get_enabled_languages();
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foreach ($enabled_languages as $language => $fullname) {
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$lang_tags = _geshifilter_tag_split(geshifilter_language_tags($language, $format));
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foreach ($lang_tags as $lang_tag) {
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$language_tags[] = $lang_tag;
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$tag_to_lang[$lang_tag] = $language;
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}
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}
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$geshifilter_tags_cache[$format] = array($generic_code_tags, $language_tags, $tag_to_lang);
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}
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return $geshifilter_tags_cache[$format];
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}
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/**
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* helper function for generating a GeSHi object
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* @param $language the language to generate a GeSHi object for
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*/
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function _geshifilter_geshi_factory($source_code, $language) {
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$available_languages = _geshifilter_get_available_languages();
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$geshi = new GeSHi($source_code, $language);
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$geshi->set_language_path($available_languages[$language]['language_path']);
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return $geshi;
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}
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/**
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* Helper function for splitting a string on white spaces.
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* Using explode(' ', $string) is not enough because it returns empty elements
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* if $string contains consecutive spaces.
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*/
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function _geshifilter_whitespace_explode($string) {
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return preg_split('/\s+/', $string, -1, PREG_SPLIT_NO_EMPTY);
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}
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function _geshifilter_tag_split($string) {
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return preg_split('/\s+|<|>|\[|\]/', $string, -1, PREG_SPLIT_NO_EMPTY);
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}
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// General settings
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function geshifilter_use_format_specific_options() {
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return variable_get('geshifilter_format_specific_options', FALSE);
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}
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function geshifilter_tags($format = NULL) {
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if (!geshifilter_use_format_specific_options() || $format === NULL) {
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return variable_get('geshifilter_tags', 'code blockcode');
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}
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return variable_get("geshifilter_tags_{$format}", geshifilter_tags());
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}
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function _geshifilter_tag_styles($format = NULL) {
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if (!geshifilter_use_format_specific_options() || $format === NULL) {
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return variable_get('geshifilter_tag_styles', array(
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GESHIFILTER_BRACKETS_ANGLE => GESHIFILTER_BRACKETS_ANGLE,
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GESHIFILTER_BRACKETS_SQUARE => GESHIFILTER_BRACKETS_SQUARE,
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));
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}
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return variable_get("geshifilter_tag_styles_{$format}", _geshifilter_tag_styles());
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}
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function geshifilter_language_tags($language, $format = NULL) {
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if (!geshifilter_use_format_specific_options() || $format === NULL) {
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return variable_get("geshifilter_language_tags_{$language}", '');
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}
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return variable_get("geshifilter_language_tags_{$language}_{$format}", geshifilter_language_tags($language));
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}
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