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<?php
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// $Id$
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/**
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* @defgroup linodef Linodef: Link nodes and embed fields, link and embed terms
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*
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* This module contains several include files. There is an api for submodules which implements buttons in various editors to facilitate the creation of buttons which supports Linodef filter.
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*/
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/**
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* @file
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* The main Linodef filter module with filter hooks.
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*
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* Linodef is a filter which filters ID tags, add links to nodes and embeds field values.
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*
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* @package Linodef
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* @author Roi Danton
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*/
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/**
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* Implementation of hook_filter.
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*/
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function linodef_filter($op, $delta = 0, $format = -1, $text = '') {
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if ($op == 'list') {
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return array(
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0 => t('Linodef - Link nodes & taxonomy terms and embed field values & term names.')
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);
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}
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// Provides extensibility.
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switch ($delta) {
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case 0:
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switch ($op) {
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case 'description':
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return t('Substitutes the Node ID for the node title or field value & links to this node. Furthermore Linodef substitutes the term ID for the term name & links to the term.');
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// Since lineodef will return a different result on each page load, we
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// need to return TRUE for "no cache" to ensure that the filter is run
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// every time the text is requested.
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case 'no cache':
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return TRUE;
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// I tried to use the bytes 0xFE and 0xFF to replace < and > here. These bytes
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// are not valid in UTF-8 data and thus unlikely to cause problems.
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// This doesnt work with double quotes "", but we need this in order to execute
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// the second preg_replace in filter.inc, so valid bytes U+10004C & U+1003CD
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// have been used.
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case 'prepare':
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return preg_replace('@<#([0-9]+)>(.*?)</#>@s', "\xf4\x80\x81\x8c#$1\xf4\x80\x8f\x8d$2\xf4\x80\x81\x8c/#\xf4\x80\x8f\x8d", $text);
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case 'process':
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include_once(drupal_get_path('module', 'linodef') .'/includes/linodef-filter.inc');
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return _linodef_filter_process($text, $format);
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}
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break;
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}
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}
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/**
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* Implementation of hook_filter_tips.
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*/
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function linodef_filter_tips($delta, $format, $long = FALSE) {
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switch ($delta) {
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case 0:
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if ($long) {
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include_once(drupal_get_path('module', 'linodef') .'/includes/linodef-filter-tips.inc');
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return _linodef_filter_tips();
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}
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else {
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return t('Embeds node title or field values by node ID and terms by term ID (<a href="@format-tips-page">[#8], [#8:field_name], [#8:field_name:2], <#8>Your Text</#8>, [#t8]</a>).', array('@format-tips-page' => url('filter/tips/'. $format, array('fragment' => 'linodef'))));
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}
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break;
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}
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}
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/**
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* Returns default messages that are needed several times and thus should be identical.
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*
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* @param array $type
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* - keys: nid, field or tid etc
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* - values: the associated value ($nid, $fieldname, $tid)
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*
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* @return string
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* Returns a message.
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*/
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function linodef_message($type, $message = FALSE) {
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if ($type['nid']) {
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$context = t('Node') .' '. $type['nid'];
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}
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elseif ($type['field']) {
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$context = t('Field') .' '. $type['field'];
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}
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elseif ($type['tid']) {
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$context = t('Term') .' '. $type['tid'];
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}
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elseif ($type['ctype']) {
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$context = t('Content type') .' '. $type['ctype'];
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}
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elseif ($type['vid']) {
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$context = t('Vocabulary') .' '. $type['vid'];
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}
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elseif ($type['checkinputvar']) {
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$output = t('Check value for %inputvariable or ask your site administrator.', array('%inputvariable' => $type['checkinputvar']));
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}
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elseif ($type['elementtypes']) {
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$output = t('Supported fields must store a (single or multiple) value such as textfields & datefield (from date).');
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}
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else {
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$output = t('Unknown key for $type in linodef_message().');
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}
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if ($context && $message) {
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switch ($message) {
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case "access denied":
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// drupal_access_denied() doesn't fit here because no page should be returned and the pagetitle should not show "Access denied"
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$output = t('Access to !context denied.', array('!context' => $context));
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break;
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case "not found":
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$output = t('!context not found', array('!context' => $context));
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break;
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}
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}
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return $output;
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}
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