203 lines
7.7 KiB
Plaintext
203 lines
7.7 KiB
Plaintext
<?php
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// $Id$
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/**
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* @file
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* Provides legacy handlers for upgrades from older Drupal installations.
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*/
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/**
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* Implementation of hook_help().
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*/
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function legacy_help($section) {
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switch ($section) {
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case 'admin/help#legacy':
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$output = '<p>'. t('The legacy module provides legacy handlers for upgrades from older installations. These handlers help automatically redirect references to pages from old installations and prevent <em>page not found</em> errors for your site.') .'</p>';
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$output .= '<p>'. t('The legacy module handles legacy style taxonomy page, taxonomy feed, and blog feed paths. It also handles URL upgrades from Drupal 4.1. It rewrites old-style URLs to new-style URLs (clean URLs). ') .'</p>';
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$output .= t('<p>Example Mappings:</p>
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<ul>
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<li><em>taxonomy/page/or/52,97</em> to <em>taxonomy/term/52+97</em>.</li>
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<li><em>taxonomy/feed/or/52,97</em> to <em>taxonomy/term/52+97/0/feed</em>.</li>
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<li><em>blog/feed/52</em> to <em>blog/52/feed</em>.</li>
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<li><em>node/view/52</em> to <em>node/52</em>.</li>
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<li><em>book/view/52</em> to <em>node/52</em>.</li>
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<li><em>user/view/52</em> to <em>user/52</em>.</li>
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</ul>
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');
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$output .= '<p>'. t('Legacy module has no configurable options.') .'</p>';
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$output .= '<p>'. t('For more information please read the configuration and customization handbook <a href="%legacy">Legacy page</a>.', array('%legacy' => 'http://drupal.org/handbook/modules/legacy/')) .'</p>';
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return $output;
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case 'admin/modules#description':
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return t('Provides legacy handlers for upgrades from older Drupal installations.');
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}
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}
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/**
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* Implementation of hook_menu().
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*
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* Registers menu paths used in earlier Drupal versions.
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*/
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function legacy_menu($may_cache) {
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$items = array();
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if ($may_cache) {
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// Map "taxonomy/page/or/52,97" to "taxonomy/term/52+97".
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$items[] = array('path' => 'taxonomy/page', 'title' => t('taxonomy'),
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'callback' => 'legacy_taxonomy_page',
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'access' => TRUE, 'type' => MENU_CALLBACK);
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// Map "taxonomy/feed/or/52,97" to "taxonomy/term/52+97/0/feed".
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$items[] = array('path' => 'taxonomy/feed', 'title' => t('taxonomy'),
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'callback' => 'legacy_taxonomy_feed',
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'access' => TRUE, 'type' => MENU_CALLBACK);
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// Map "blog/feed/52" to "blog/52/feed".
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$items[] = array('path' => 'blog/feed', 'title' => t('blog'),
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'callback' => 'legacy_blog_feed',
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'access' => TRUE, 'type' => MENU_CALLBACK);
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}
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else {
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// Map "node/view/52" to "node/52".
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$items[] = array('path' => 'node/view', 'title' => t('view'),
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'callback' => 'drupal_goto',
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'callback arguments' => array('node/'. arg(2), NULL, NULL),
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'access' => TRUE, 'type' => MENU_CALLBACK);
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// Map "book/view/52" to "node/52".
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$items[] = array('path' => 'book/view', 'title' => t('view'),
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'callback' => 'drupal_goto',
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'callback arguments' => array('node/'. arg(2), NULL, NULL),
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'access' => TRUE, 'type' => MENU_CALLBACK);
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// Map "user/view/52" to "user/52".
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$items[] = array('path' => 'user/view', 'title' => t('view'),
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'callback' => 'drupal_goto',
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'callback arguments' => array('user/'. arg(2), NULL, NULL),
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'access' => TRUE, 'type' => MENU_CALLBACK);
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}
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return $items;
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}
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/**
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* Menu callback; redirects users to new taxonomy page paths.
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*/
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function legacy_taxonomy_page($operation = 'or', $str_tids = '') {
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if ($operation == 'or') {
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$str_tids = str_replace(',', '+', $str_tids);
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}
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drupal_goto('taxonomy/term/'. $str_tids);
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}
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/**
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* Menu callback; redirects users to new taxonomy feed paths.
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*/
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function legacy_taxonomy_feed($operation = 'or', $str_tids = '') {
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if ($operation == 'or') {
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$str_tids = str_replace(',', '+', $str_tids);
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}
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drupal_goto('taxonomy/term/'. $str_tids .'/0/feed');
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}
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/**
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* Menu callback; redirects users to new blog feed paths.
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*/
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function legacy_blog_feed($str_uid = '') {
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// if URL is of form blog/feed/52 redirect
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// if URL is of form blog/feed we have to call blog_feed_last().
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if (is_numeric($str_uid)) {
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drupal_goto('blog/'. $str_uid .'/feed');
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}
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else {
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module_invoke('blog', 'feed_last');
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}
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}
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/**
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* Implementation of hook_filter(). Handles URL upgrades from Drupal 4.1.
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*/
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function legacy_filter($op, $delta = 0, $format = -1, $text = '') {
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switch ($op) {
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case 'list':
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return array(t('Legacy filter'));
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case 'description':
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return t('Replaces URLs from Drupal 4.1 (and lower) with updated equivalents.');
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case 'process':
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return _legacy_filter_old_urls($text, $format);
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case 'settings':
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return;
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default:
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return $text;
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}
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}
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/**
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* Rewrite legacy URLs.
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*
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* This is a *temporary* filter to rewrite old-style URLs to new-style
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* URLs (clean URLs). Currently, URLs are being rewritten dynamically
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* (ie. "on output"), however when these rewrite rules have been tested
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* enough, we will use them to permanently rewrite the links in node
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* and comment bodies.
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*/
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function _legacy_filter_old_urls($text) {
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if (!variable_get('rewrite_old_urls', 0)) {
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return $text;
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}
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global $base_url;
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$end = substr($base_url, 12);
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if (variable_get('clean_url', '0') == '0') {
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// Relative URLs:
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// rewrite 'node.php?id=<number>[&cid=<number>]' style URLs:
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$text = eregi_replace("\"(node)\.php\?id=([[:digit:]]+)(&cid=)?([[:digit:]]*)", "\"?q=\\1/view/\\2/\\4", $text);
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// rewrite 'module.php?mod=<name>{&<op>=<value>}' style URLs:
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$text = ereg_replace("\"module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))", "\"?q=\\2/\\4/\\6" , $text);
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$text = ereg_replace("\"module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))", "\"?q=\\2/\\4", $text);
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$text = ereg_replace("\"module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))", "\"?q=\\2", $text);
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// Absolute URLs:
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// rewrite 'node.php?id=<number>[&cid=<number>]' style URLs:
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$text = eregi_replace("$end/(node)\.php\?id=([[:digit:]]+)(&cid=)?([[:digit:]]*)", "$end/?q=\\1/view/\\2/\\4", $text);
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// rewrite 'module.php?mod=<name>{&<op>=<value>}' style URLs:
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$text = ereg_replace("$end/module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))", "$end/?q=\\2/\\4/\\6" , $text);
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$text = ereg_replace("$end/module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))", "$end/?q=\\2/\\4", $text);
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$text = ereg_replace("$end/module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))", "\"$end/?q=\\2", $text);
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}
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else {
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// Relative URLs:
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// Rewrite 'node.php?id=<number>[&cid=<number>]' style URLs:
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$text = eregi_replace("\"(node)\.php\?id=([[:digit:]]+)(&cid=)?([[:digit:]]*)", "\"\\1/view/\\2/\\4", $text);
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// Rewrite 'module.php?mod=<name>{&<op>=<value>}' style URLs:
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$text = ereg_replace("\"module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))", "\"\\2/\\4/\\6", $text);
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$text = ereg_replace("\"module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))", "\"\\2/\\4", $text);
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$text = ereg_replace("\"module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))", "\"\\2", $text);
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// Absolute URLs:
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// Rewrite 'node.php?id=<number>[&cid=<number>]' style URLs:
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$text = eregi_replace("$end/(node)\.php\?id=([[:digit:]]+)(&cid=)?([[:digit:]]*)", "$end/\\1/view/\\2/\\4", $text);
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// Rewrite 'module.php?mod=<name>{&<op>=<value>}' style URLs:
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$text = ereg_replace("$end/module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))", "$end/\\2/\\4/\\6", $text);
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$text = ereg_replace("$end/module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))(&?[[:alpha:]]+=([[:alnum:]]+))", "$end/\\2/\\4", $text);
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$text = ereg_replace("$end/module\.php\?(&?[[:alpha:]]+=([[:alnum:]]+))", "$end/\\2", $text);
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}
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return $text;
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}
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