207 lines
10 KiB
PHP
207 lines
10 KiB
PHP
<?php
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/**
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* @file
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* Implementation of the filter tips.
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*/
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require_once drupal_get_path('module', 'geshifilter') .'/geshifilter.inc';
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/**
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* Implementation for geshifilter_filter_tips()
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*/
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function _geshifilter_filter_tips($delta, $format, $long = FALSE) {
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// Get the supported tag styles.
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$tag_styles = array_filter(_geshifilter_tag_styles($format));
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$tag_style_examples = array();
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$bracket_open = NULL;
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if (in_array(GESHIFILTER_BRACKETS_ANGLE, $tag_styles)) {
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if (!$bracket_open) {
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$bracket_open = check_plain('<');
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$bracket_close = check_plain('>');
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}
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$tag_style_examples[] = '<code>'. check_plain('<foo>') .'</code>';
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}
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if (in_array(GESHIFILTER_BRACKETS_SQUARE, $tag_styles)) {
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if (!$bracket_open) {
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$bracket_open = check_plain('[');
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$bracket_close = check_plain(']');
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}
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$tag_style_examples[] = '<code>'. check_plain('[foo]') .'</code>';
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}
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if (in_array(GESHIFILTER_BRACKETS_DOUBLESQUARE, $tag_styles)) {
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if (!$bracket_open) {
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$bracket_open = check_plain('[[');
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$bracket_close = check_plain(']]');
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}
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$tag_style_examples[] = '<code>'. check_plain('[[foo]]') .'</code>';
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}
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if (!$bracket_open) {
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drupal_set_message(t('Could not determine a valid tag style for GeSHi filtering.'), 'error');
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$bracket_open = check_plain('<');
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$bracket_close = check_plain('>');
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}
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if ($long) {
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// get the available tags
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list($generic_code_tags, $language_tags, $tag_to_lang) = _geshifilter_get_tags($format);
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// get the available languages
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$languages = _geshifilter_get_enabled_languages();
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$lang_attributes = _geshifilter_whitespace_explode(GESHIFILTER_ATTRIBUTES_LANGUAGE);
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// syntax highlighting tags
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$output = '<p>'. t('Syntax highlighting of source code can be enabled with the following tags:') .'</p>';
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$items = array();
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// generic tags
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$tags = array();
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foreach ($generic_code_tags as $tag) {
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$tags[] = '"<code>'. $bracket_open . $tag . $bracket_close .'</code>"';
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}
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$items[] = t('Generic syntax highlighting tags: !tags.', array('!tags' => implode(', ', $tags)));
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// language tags
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$tags = array();
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foreach ($language_tags as $tag) {
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$tags[] = t('"<code>!tag</code>" for @lang source code', array(
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'!tag' => $bracket_open . $tag . $bracket_close,
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'@lang' => $languages[$tag_to_lang[$tag]])
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);
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}
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$items[] = t('Language specific syntax highlighting tags: !tags.', array('!tags' => implode(', ', $tags)));
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// PHP specific delimiters
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if (in_array(GESHIFILTER_BRACKETS_PHPBLOCK, $tag_styles)) {
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$items[] = t('PHP source code can also be enclosed in <?php ... ?> or <% ... %>, but additional options like line numbering are not possible here.');
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}
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$output .= theme('item_list', $items);
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// Options and tips
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$output .= '<p>'. t('Options and tips:') .'</p>';
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$items = array();
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// info about language attribute to language mapping
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$att_to_full = array();
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foreach ($languages as $langcode => $fullname) {
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$att_to_full[$langcode] = $fullname;
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}
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foreach ($tag_to_lang as $tag => $lang) {
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$att_to_full[$tag] = $languages[$lang];
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}
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ksort($att_to_full);
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$att_for_full = array();
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foreach ($att_to_full as $att => $fullname) {
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$att_for_full[] = t('"<code>@langcode</code>" (for @fullname)', array('@langcode' => $att, '@fullname' => $fullname));
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}
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$items[] = t('The language for the generic syntax highlighting tags can be specified with one of the attribute(s): %attributes. The possible values are: !languages.', array('%attributes' => implode(', ', $lang_attributes), '!languages' => implode(', ', $att_for_full)));
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// Tag style options.
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if (count($tag_style_examples) > 1) {
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$items[] = t('The supported tag styles are: !tag_styles.' , array('!tag_styles' => implode(', ', $tag_style_examples)));
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}
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// line numbering options
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$items[] = t('<em>Line numbering</em> can be enabled/disabled with the attribute "%linenumbers". Possible values are: "%off" for no line numbers, "%normal" for normal line numbers and "%fancy" for fancy line numbers (every n<sup>th</sup> line number highlighted). The start line number can be specified with the attribute "%start", which implicitly enables normal line numbering. For fancy line numbering the interval for the highlighted line numbers can be specified with the attribute "%fancy", which implicitly enables fancy line numbering.', array('%linenumbers' => GESHIFILTER_ATTRIBUTE_LINE_NUMBERING, '%off' => 'off', '%normal' => 'normal', '%fancy' => 'fancy', '%start' => GESHIFILTER_ATTRIBUTE_LINE_NUMBERING_START, '%fancy' => GESHIFILTER_ATTRIBUTE_FANCY_N));
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// block versus inline
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$items[] = t('If the source code between the tags contains a newline (e.g. immediatly after the opening tag), the highlighted source code will be displayed as a code block. Otherwise it will be displayed inline.');
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// Code block title
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$items[] = t('A title can be added to a code block with the attribute "%title".', array(
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'%title' => GESHIFILTER_ATTRIBUTE_TITLE,
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));
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$output .= theme('item_list', $items);
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// Defaults
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$output .= '<p>'. t('Defaults:') .'</p>';
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$items = array();
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$default_highlighting = variable_get('geshifilter_default_highlighting', GESHIFILTER_DEFAULT_PLAINTEXT);
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switch ($default_highlighting) {
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case GESHIFILTER_DEFAULT_DONOTHING:
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$description = t('when no language attribute is specified the code block won\'t be processed by the GeSHi filter');
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break;
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case GESHIFILTER_DEFAULT_PLAINTEXT:
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$description = t('when no language attribute is specified, no syntax highlighting will be done');
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break;
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default:
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$description = t('the default language used for syntax highlighting is "%default_lang"', array('%default_lang' => $default_highlighting));
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break;
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}
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$items[] = t('Default highlighting mode for generic syntax highlighting tags: !description.', array('!description' => $description));
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$default_line_numbering = variable_get('geshifilter_default_line_numbering', GESHIFILTER_LINE_NUMBERS_DEFAULT_NONE);
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switch ($default_line_numbering) {
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case GESHIFILTER_LINE_NUMBERS_DEFAULT_NONE:
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$description = t('no line numbers');
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break;
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case GESHIFILTER_LINE_NUMBERS_DEFAULT_NORMAL:
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$description = t('normal line numbers');
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break;
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default:
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$description = t('fancy line numbers (every @n lines)', array('@n' => $default_line_numbering));
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break;
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}
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$items[] = t('Default line numbering: !description.', array('!description' => $description));
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$output .= theme('item_list', $items);
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// Examples
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$output .= '<p>'. t('Examples:') .'</p>';
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$header = array(t('You type'), t('You get'));
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$rows = array();
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if (count($generic_code_tags)) {
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$generic_code_tag = $generic_code_tags[0];
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$lang = array_rand($languages);
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$generic_code_tag_open = $bracket_open . $generic_code_tag;
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$generic_code_tag_close = $bracket_open .'/'. $generic_code_tag . $bracket_close;
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$rows[] = array(
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'<code>'. $generic_code_tag_open . $bracket_close .'foo = "bar";'. $generic_code_tag_close .'</code>',
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t('Inline code with the default syntax highlighting mode.'),
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);
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$rows[] = array(
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'<code>'. $generic_code_tag_open . $bracket_close .'<br />foo = "bar";<br />baz = "foz";<br />'. $generic_code_tag_close .'</code>',
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t('Code block with the default syntax highlighting mode.'),
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);
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$rows[] = array(
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'<code>'. $generic_code_tag_open .' '. $lang_attributes[1 % count($lang_attributes)] .'="'. $lang .'" '. GESHIFILTER_ATTRIBUTE_LINE_NUMBERING .'="normal"'. $bracket_close .'<br />foo = "bar";<br />baz = "foz";<br />'. $generic_code_tag_close .'</code>',
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t('Code block with syntax highlighting for @lang source code<br /> and normal line numbers.', array('@lang' => $languages[$lang])),
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);
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$rows[] = array(
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'<code>'. $generic_code_tag_open .' '. $lang_attributes[2 % count($lang_attributes)] .'="'. $lang .'" '. GESHIFILTER_ATTRIBUTE_LINE_NUMBERING_START .'="23" '. GESHIFILTER_ATTRIBUTE_FANCY_N .'="7"'. $bracket_close .'<br />foo = "bar";<br />baz = "foz";<br />'. $generic_code_tag_close .'</code>',
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t('Code block with syntax highlighting for @lang source code,<br />line numbers starting from 23<br /> and highlighted line numbers every 7<sup>th</sup> line.', array('@lang' => $languages[$lang])),
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);
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}
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if (count($language_tags)) {
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$language_tag = $language_tags[0];
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$rows[] = array(
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'<code>'. $bracket_open . $language_tag . $bracket_close .'<br />foo = "bar";<br />baz = "foz";<br />'. $bracket_open .'/'. $language_tag . $bracket_close .'</code>',
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t('Code block with syntax highlighting for @lang source code.', array('@lang' => $languages[$tag_to_lang[$language_tag]])),
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);
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$rows[] = array(
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'<code>'. $bracket_open . $language_tag .' '. GESHIFILTER_ATTRIBUTE_LINE_NUMBERING_START .'="23" '. GESHIFILTER_ATTRIBUTE_FANCY_N .'="7"'. $bracket_close .'<br />foo = "bar";<br />baz = "foz";<br />'. $bracket_open . $language_tag . $bracket_close .'</code>',
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t('Code block with syntax highlighting for @lang source code,<br />line numbers starting from 23<br /> and highlighted line numbers every 7<sup>th</sup> line.', array('@lang' => $languages[$tag_to_lang[$language_tag]])),
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);
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}
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$output .= theme('table', $header, $rows);
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return $output;
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}
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else {
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// get the available tags
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list($generic_code_tags, $language_tags, $tag_to_lang) = _geshifilter_get_tags($format);
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$tags = array();
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foreach ($generic_code_tags as $tag) {
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$tags[] = '<code>'. $bracket_open . $tag . $bracket_close .'</code>';
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}
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foreach ($language_tags as $tag) {
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$tags[] = '<code>'. $bracket_open . $tag . $bracket_close .'</code>';
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}
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$output = t('You can enable syntax highlighting of source code with the following tags: !tags.', array('!tags' => implode(', ', $tags)));
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// Tag style options.
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if (count($tag_style_examples) > 1) {
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$output .= ' '. t('The supported tag styles are: !tag_styles.' , array('!tag_styles' => implode(', ', $tag_style_examples)));
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}
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if (in_array(GESHIFILTER_BRACKETS_PHPBLOCK, $tag_styles)) {
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$output .= ' '. t('PHP source code can also be enclosed in <?php ... ?> or <% ... %>.');
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}
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return $output;
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}
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}
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