b73214abba
this and followup commits touches:
use load_languiage API
class method parenthesis "\n{\n <code>\n}\n",
case break switches,
consistent boolean usage,
append css to eventData
and other cleanups
586 lines
23 KiB
PHP
586 lines
23 KiB
PHP
<?php
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if (IN_serendipity !== true) {
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die ("Don't hack!");
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}
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@serendipity_plugin_api::load_language(dirname(__FILE__));
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class serendipity_event_nl2br extends serendipity_event
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{
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var $title = PLUGIN_EVENT_NL2BR_NAME;
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function introspect(&$propbag)
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{
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global $serendipity;
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$propbag->add('name', PLUGIN_EVENT_NL2BR_NAME);
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$propbag->add('description', PLUGIN_EVENT_NL2BR_DESC);
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$propbag->add('stackable', false);
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$propbag->add('author', 'Serendipity Team');
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$propbag->add('version', '2.21');
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$propbag->add('requirements', array(
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'serendipity' => '1.6',
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'smarty' => '2.6.7',
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'php' => '4.1.0'
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));
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$propbag->add('cachable_events', array('frontend_display' => true));
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$propbag->add('event_hooks', array('frontend_display' => true,
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'backend_configure' => true,
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'css' => true
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));
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$propbag->add('groups', array('MARKUP'));
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$this->markup_elements = array(
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array(
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'name' => 'ENTRY_BODY',
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'element' => 'body',
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),
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array(
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'name' => 'EXTENDED_BODY',
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'element' => 'extended',
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),
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array(
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'name' => 'COMMENT',
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'element' => 'comment',
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),
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array(
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'name' => 'HTML_NUGGET',
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'element' => 'html_nugget',
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)
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);
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$conf_array = array('check_markup', 'isolate', 'p_tags', 'isobr', 'clean_tags');
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foreach($this->markup_elements as $element) {
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$conf_array[] = $element['name'];
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}
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$propbag->add('configuration', $conf_array);
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}
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function cleanup()
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{
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global $serendipity;
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/* check possible config mismatch setting in combination with ISOBR */
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if ( serendipity_db_bool($this->get_config('isobr')) === true ) {
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if( serendipity_db_bool($this->get_config('clean_tags')) === true ) {
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$this->set_config('clean_tags', false);
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echo '<div class="serendipityAdminMsgError msg_error"><img class="backend_attention" src="' . $serendipity['serendipityHTTPPath'] . 'templates/default/admin/img/admin_msg_note.png" alt="" />';
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echo sprintf(PLUGIN_EVENT_NL2BR_CONFIG_ERROR, 'clean_tags', 'ISOBR') . '</div>';
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return false;
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}
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if ( serendipity_db_bool($this->get_config('p_tags')) === true ) {
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$this->set_config('p_tags', false);
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echo '<div class="serendipityAdminMsgError msg_error"><img class="backend_attention" src="' . $serendipity['serendipityHTTPPath'] . 'templates/default/admin/img/admin_msg_note.png" alt="" />';
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echo sprintf(PLUGIN_EVENT_NL2BR_CONFIG_ERROR, 'p_tags', 'ISOBR') . '</div>';
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return false;
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}
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}
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/* check possible config mismatch setting in combination with P_TAGS */
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if ( serendipity_db_bool($this->get_config('p_tags')) === true && serendipity_db_bool($this->get_config('clean_tags')) === true ) {
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$this->set_config('clean_tags', false);
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echo '<div class="serendipityAdminMsgError msg_error"><img class="backend_attention" src="' . $serendipity['serendipityHTTPPath'] . 'templates/default/admin/img/admin_msg_note.png" alt="" />';
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echo sprintf(PLUGIN_EVENT_NL2BR_CONFIG_ERROR, 'clean_tags', 'P_TAGS') . '</div>';
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return false;
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}
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return true;
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}
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function example()
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{
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return '<h3>PLEASE NOTE the implications of this markup plugin:</h3>
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<p>This plugin transfers linebreaks to HTML-linebreaks, so that they show up in your blog entry.</p>
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<p>In two cases this can raise problematic issues for you:</p>
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<ul>
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<li>if you use a <strong>WYSIWYG editor</strong> to write your entries. In that case, the WYSIWYG editor already inserts proper HTML linebreaks, so the nl2br plugin would actually double those linebreaks.</li>
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<li>if you use any other markup plugins in conjunction with this plugin that already translate linebreaks. The <strong>TEXTILE and MARKDOWN plugins</strong> are examples for plugins like these.</li>
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</ul>
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<p>To prevent problems, you should disable the nl2br plugin on entries globally or per entry within the "Extended properties" section of an entry, if you have the entryproperties plugin installed.</p>
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<p>Generally advice: The nl2br plugin only makes sense if you</p>
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<ul>
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<li>A) do not use other markup plugins or</li>
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<li>B) you do not use the WYSIWYG editor or</li>
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<li>C) you only want to apply linebreak transformations on comments to your blog entries, and do not allow any possible markup of other plugins that you only use for blog entries.</li>
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</ul>'."\n";
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}
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function install()
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{
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serendipity_plugin_api::hook_event('backend_cache_entries', $this->title);
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}
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function uninstall(&$propbag)
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{
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serendipity_plugin_api::hook_event('backend_cache_purge', $this->title);
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serendipity_plugin_api::hook_event('backend_cache_entries', $this->title);
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}
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function generate_content(&$title)
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{
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$title = $this->title;
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}
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function introspect_config_item($name, &$propbag)
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{
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switch($name) {
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case 'check_markup':
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$propbag->add('type', 'boolean');
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$propbag->add('name', PLUGIN_EVENT_NL2BR_CHECK_MARKUP);
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$propbag->add('description', PLUGIN_EVENT_NL2BR_CHECK_MARKUP_DESC);
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$propbag->add('default', 'true');
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break;
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case 'isolate':
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$propbag->add('type', 'string');
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$propbag->add('name', PLUGIN_EVENT_NL2BR_ISOLATE_TAGS);
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$propbag->add('description', PLUGIN_EVENT_NL2BR_ISOLATE_TAGS_DESC);
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$propbag->add('default', '');
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break;
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case 'p_tags':
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$propbag->add('type', 'boolean');
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$propbag->add('name', PLUGIN_EVENT_NL2BR_PTAGS);
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$propbag->add('description', PLUGIN_EVENT_NL2BR_PTAGS_DESC);
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$propbag->add('default', 'false');
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break;
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case 'isobr':
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$propbag->add('type', 'boolean');
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$propbag->add('name', PLUGIN_EVENT_NL2BR_ISOBR_TAG);
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$propbag->add('description', PLUGIN_EVENT_NL2BR_ISOBR_TAG_DESC);
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$propbag->add('default', 'true');
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break;
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case 'clean_tags':
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$propbag->add('type', 'boolean');
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$propbag->add('name', PLUGIN_EVENT_NL2BR_CLEANTAGS);
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$propbag->add('description', PLUGIN_EVENT_NL2BR_CLEANTAGS_DESC);
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$propbag->add('default', 'false');
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break;
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default:
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$propbag->add('type', 'boolean');
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$propbag->add('name', constant($name));
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$propbag->add('description', sprintf(APPLY_MARKUP_TO, constant($name)));
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$propbag->add('default', 'true');
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break;
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}
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return true;
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}
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function isolate($src, $regexp = NULL)
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{
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if($regexp) return preg_replace_callback($regexp, array($this, 'isolate'), $src);
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global $_buf;
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$_buf[] = $src[0];
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return "\001" . (count($_buf) - 1);
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}
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function restore_callback($matches)
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{
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global $_buf;
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return $_buf[$matches[1]];
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}
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function restore($text)
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{
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return preg_replace_callback('!\001(\d+)!', array($this, 'restore_callback'), $text); // works?!
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}
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function event_hook($event, &$bag, &$eventData, $addData = null)
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{
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global $serendipity;
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static $markup = null;
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static $isolate = null;
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static $p_tags = null;
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static $isobr = null;
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static $clean_tags = null;
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global $_buf;
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$hooks = &$bag->get('event_hooks');
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if ($markup === null) {
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$markup = serendipity_db_bool($this->get_config('check_markup'));
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}
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if ($p_tags === null) {
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$p_tags = serendipity_db_bool($this->get_config('p_tags'));
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}
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if ($isobr === null) {
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$isobr = serendipity_db_bool($this->get_config('isobr'));
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}
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if ($clean_tags === null) {
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$clean_tags = serendipity_db_bool($this->get_config('clean_tags'));
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}
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if (isset($hooks[$event])) {
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switch($event) {
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case 'frontend_display':
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// check single entry for temporary disabled markups
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if ( !$eventData['properties']['ep_disable_markup_' . $this->instance] &&
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@!in_array($this->instance, $serendipity['POST']['properties']['disable_markups']) &&
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!$eventData['properties']['ep_no_textile'] && !isset($serendipity['POST']['properties']['ep_no_textile']) &&
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!$eventData['properties']['ep_no_markdown'] && !isset($serendipity['POST']['properties']['ep_no_markdown'])) {
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// yes, this markup shall be applied
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$serendipity['nl2br']['entry_disabled_markup'] = false;
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} else {
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// no, do not apply markup
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$serendipity['nl2br']['entry_disabled_markup'] = true;
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}
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/* PLEASE NOTE:
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$serendipity['POST']['properties']['disable_markups'] = array(false); is the only workable solution for (sidebar?) plugins (see sidebar plugins: guestbook, multilingual), to explicitly allow to apply nl2br to markup (if we want to)
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*/
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// don't run, if the textile, or markdown plugin already took care about markup
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if ($markup && $serendipity['nl2br']['entry_disabled_markup'] === false && (class_exists('serendipity_event_textile') || class_exists('serendipity_event_markdown'))) {
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break;
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}
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// NOTE: the wysiwyg-editor needs to send its own ['properties']['ep_no_nl2br'] to disable the nl2br() parser!
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// check for users isolation tags
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if ($isolate === null) {
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$isolate = $this->get_config('isolate');
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$tags = (array)explode(',', $isolate);
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$isolate = array();
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foreach($tags AS $tag) {
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$tag = trim($tag);
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if (!empty($tag)) {
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$isolate[] = $tag;
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}
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}
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if (count($isolate) < 1) {
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$isolate = false;
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}
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}
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foreach ($this->markup_elements as $temp) {
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if (serendipity_db_bool($this->get_config($temp['name'], true)) && isset($eventData[$temp['element']]) &&
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!$eventData['properties']['ep_disable_markup_' . $this->instance] &&
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@!in_array($this->instance, $serendipity['POST']['properties']['disable_markups']) &&
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!$eventData['properties']['ep_no_nl2br'] &&
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!isset($serendipity['POST']['properties']['ep_no_nl2br'])) {
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$element = $temp['element'];
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if ($p_tags) {
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$eventData[$element] = $this->nl2p($eventData[$element]);
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} else if ($isolate) {
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$eventData[$element] = $this->isolate($eventData[$element], '~[<\[](' . implode('|', $isolate) . ').*?[>\]].*?[<\[]/\1[>\]]~si');
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$eventData[$element] = nl2br($eventData[$element]);
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$eventData[$element] = $this->restore($eventData[$element]);
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} else {
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if($isobr) {
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$eventData[$element] = $this->isolate($eventData[$element], '~[<\[](nl).*?[>\]].*?[<\[]/\1[>\]]~si');
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$eventData[$element] = nl2br($eventData[$element]);
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$eventData[$element] = $this->restore($eventData[$element]);
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// unset nl tagline, if is
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$eventData[$element] = str_replace(array("<nl>", "</nl><br />", "</nl><br/>", "</nl>"), "", $eventData[$element]);
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} else {
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$eventData[$element] = nl2br($eventData[$element]);
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}
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}
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/* this is an option if not using new isobr default config setting */
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if (!$p_tags && $isobr === false && $clean_tags === true) {
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// convert line endings to Unix style, if not already done
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$eventData[$element] = str_replace(array("\r\n", "\r"), "\n", $eventData[$element]);
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// clean special tags from nl2br
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$eventData[$element] = $this->clean_nl2brtags($eventData[$element]);
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}
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}
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}
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break;
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case 'backend_configure':
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// check single entry for temporary disabled markups
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if( $isobr ) {
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$serendipity['nl2br']['iso2br'] = true; // include to global as also used by staticpages now
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if (!is_object($serendipity['smarty'])) {
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serendipity_smarty_init(); // if not set to avoid member function assign() on a non-object error, start Smarty templating
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}
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// hook into default/admin/entries.tpl somehow via the Heart Of Gold = serendipity_printEntryForm() before! it is loaded
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$serendipity['smarty']->assign('iso2br', true);
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}
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break;
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case 'css':
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$eventData .= '
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/* nl2br plugin start */
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p.whiteline {
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margin-top: 0em;
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margin-bottom: 1em;
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}
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p.break {
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margin-top: 0em;
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margin-bottom: 0em;
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}
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/* nl2br plugin end */
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';
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break;
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default:
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return false;
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}
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return true;
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} else {
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return false;
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}
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}
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/**
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* clean nl2br from markup where it is invalid and/or breaks html output
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* @param string entrytext
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* @return string
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*/
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function clean_nl2brtags(&$entry)
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{
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$allTags = explode('|', 'table|thead|tbody|tfoot|th|tr|td|caption|colgroup|col|ol|ul|li|dl|dt|dd');
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$br2nl = array();
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foreach($allTags as $tag){
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/* for \\1 ( start with : < followed by any number of white spaces : \s* optionally a slash : /? and the tag itself )
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* for \\2 ( anything with spaces and characters following until )
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* for \\3 ( finally the > )
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* for \\4 ( <br followed by any number of spaces, the optional slash and ending with > )
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* regex modifier : i - using a case-insensitive match, as upper <TAGS> are valid in HTML
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* regex modifier : s - using the dot metacharacter in the pattern to match all characters, including newlines */
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$br2nl[] = "%(<\s*/?$tag)(.*?)([^>]*>)(<br\s*/?>)%is";
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}
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if(sizeof($br2nl)) $entry = preg_replace($br2nl, '\\1\\2\\3', $entry);
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return $entry;
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}
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/**
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* Insert <p class="whiteline" at paragraphs ending with two newlines
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* Insert <p class="break" at paragraphs ending with one nl
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* @param string text
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* @param boolean complex operations (not necessary when text is flat)
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* @return string
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*/
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function nl2p(&$text, $complex=true)
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{
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if (empty($text)) {
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return $text;
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}
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//Standardize line endings:
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//DOS to Unix and Mac to Unix
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$text = str_replace(array("\r\n", "\r"), "\n", $text);
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$text = str_split($text);
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$big_p = '<p class="whiteline">';
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$small_p = '<p class="break">';
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$insert = true;
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$i = count($text);
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$whiteline = false;
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if ($text[$i-1] == "\n") {
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//prevent unnexessary p-tag at the end
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unset($text[$i-1]);
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}
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//main operation: convert \n to big_p and small_p
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while ($i > 0) {
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if ($insert) {
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$i = $this->next_nl_block($i, $text);
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if ($i == 0) {
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//prevent replacing of first character
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break;
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}
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if ($whiteline == true) {
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$text[$i] = '</p>' . $big_p;
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} else {
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$text[$i] = '</p>' . $small_p;
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}
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$whiteline = false;
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$insert = false;
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} else {
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if ($text[$i-1] === "\n") {
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//newline is follower of a newline
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$whiteline = true;
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}
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$insert = true;
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}
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}
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if ($whiteline) {
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$start_tag = $big_p;
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} else {
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$start_tag = $small_p;
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}
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if ($complex) {
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$textstring = $this->tidy_block_elements($text);
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$textstring = $this->formate_block_elements($textstring);
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$textstring = $this->isolate_block_elements($textstring);
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$textstring = $start_tag . $textstring . '</p>';
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return $this->clean_code($textstring);
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}
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return $start_tag . implode($text) . '</p>';
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}
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/**
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* Remove unnecessary paragraphs
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* Unnecessary are those which start and end immediately.
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* They only get created by isolate_block_elements
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* @param mixed text
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* @return string
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*/
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function clean_code ($text)
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{
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if (is_array($text)) {
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$text = implode($text);
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}
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return str_replace(array('<p class="whiteline"></p>','<p class="break"></p>', '<p></p>'),"", $text);
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}
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function purge_p($text)
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{
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$text = str_replace('</p>', "", $text);
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return str_replace(array('<p class="whiteline">','<p class="break">', '<p>', '</p>'),"\n", $text);
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}
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/**
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* Use nl2p on text within blockelements, useful e.g. with blockquotes
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* @param array text
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* @return string
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*/
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function formate_block_elements($textstring)
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{
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$block_elements = array('<blockquote');
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foreach ($block_elements as $start_tag) {
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|
$end_tag = $this->end_tags($start_tag);
|
|
//first see if block-element really exists
|
|
$start_tag_position = strpos($textstring, $start_tag);
|
|
while ($start_tag_position !== false) {
|
|
$start_tag_end = strpos($textstring, '>', $start_tag_position)+1;
|
|
$blocktext = $this->get_string_till($textstring, $end_tag, $start_tag_end);
|
|
$blocktext_length = strlen($blocktext);
|
|
$formatted_blocktext = $this->nl2p($blocktext);
|
|
//insert formatted_blocktext into old blockelement
|
|
$textstring = substr_replace($textstring, $formatted_blocktext, $start_tag_end, $blocktext_length);
|
|
|
|
//next blockelement
|
|
$start_tag_position = strpos($textstring, $start_tag, $start_tag_end+strlen($formatted_blocktext));
|
|
}
|
|
}
|
|
return $textstring;
|
|
}
|
|
|
|
/**
|
|
* Make sure none of these block_elements are within a <p>
|
|
* @param string text
|
|
* @return string
|
|
*/
|
|
function isolate_block_elements($textstring)
|
|
{
|
|
$block_elements = array('<table','<ul','<ol','<pre', '<dir', '<dl',
|
|
'<h1', '<h2', '<h3', '<h4', '<h5', '<h6',
|
|
'<menu', '<blockquote');
|
|
$block_elements_amount = count($block_elements);
|
|
|
|
for($i=0;$i<$block_elements_amount;$i++) {
|
|
$start_tag = $block_elements[$i];
|
|
//first see if block-element really exists
|
|
$tag_position = strpos($textstring, $start_tag);
|
|
if ($tag_position === false) {
|
|
continue;
|
|
} else {
|
|
$end_tag = $this->end_tags($start_tag);
|
|
$textstring = str_replace("$start_tag", "</p>$start_tag", $textstring);
|
|
$textstring = str_replace("$end_tag", "$end_tag<p>", $textstring);
|
|
}
|
|
}
|
|
return $textstring;
|
|
}
|
|
|
|
/**
|
|
* Remove all <p>-tags from block-elements
|
|
* Note: Walking from left to right
|
|
* @param array text
|
|
* @return string
|
|
*/
|
|
function tidy_block_elements($text)
|
|
{
|
|
$remove = false;
|
|
$textstring = implode($text);
|
|
$block_elements = array('<table','<ul','<ol','<pre', '<dir', '<dl',
|
|
'<h1', '<h2', '<h3', '<h4', '<h5', '<h6',
|
|
'<menu', '<blockquote');
|
|
foreach ($block_elements as $start_tag) {
|
|
$end_tag = $this->end_tags($start_tag);
|
|
//first see if block-element really exists
|
|
$start_tag_position = strpos($textstring, $start_tag);
|
|
while ($start_tag_position !== false) {
|
|
$start_tag_end = strpos($textstring, '>', $start_tag_position)+1;
|
|
$blocktext = $this->get_string_till($textstring, $end_tag, $start_tag_end);
|
|
$blocktext_length = strlen($blocktext);
|
|
$formatted_blocktext = $this->purge_p($blocktext);
|
|
//insert formatted_blocktext into old blockelement
|
|
$textstring = substr_replace($textstring, $formatted_blocktext, $start_tag_end, $blocktext_length);
|
|
|
|
//next blockelement
|
|
$start_tag_position = strpos($textstring, $start_tag, $start_tag_end+strlen($formatted_blocktext));
|
|
}
|
|
}
|
|
return $textstring;
|
|
}
|
|
|
|
function get_string_till($text, $end_tag, $offset=0)
|
|
{
|
|
if (strpos($text, $end_tag, $offset) === false) {
|
|
return "";
|
|
}
|
|
$len = strpos($text, $end_tag, $offset) - $offset;
|
|
return substr($text, $offset, $len);
|
|
}
|
|
|
|
/**
|
|
* Return corresponding end-tag: <p -> </p>
|
|
*/
|
|
function end_tags($start_tag)
|
|
{
|
|
return str_replace("<", "</", $start_tag).">";
|
|
}
|
|
|
|
/**
|
|
* Find next newline separated by text from current position
|
|
* @param int start
|
|
* $param array text
|
|
*/
|
|
function next_nl_block($i, $text)
|
|
{
|
|
$skipped = false;
|
|
for ($i--; $i>0; $i-- ) {
|
|
if (!$skipped){
|
|
//see if you skipped over a non-newline (heading to the next block)
|
|
if (strpos($text[$i], "\n") === false) {
|
|
$skipped = true;
|
|
}
|
|
} else if (strpos($text[$i], "\n") !== false) {
|
|
break;
|
|
}
|
|
}
|
|
return $i;
|
|
}
|
|
|
|
}
|
|
|
|
/* vim: set sts=4 ts=4 expandtab : */
|
|
?>
|