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<?php /* -*-php-*- */
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/*
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* Diff module for drupal.
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* Copyright (c) 2005 Mohammed Sameer.
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* This module is distributed under the GPL.
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*/
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include_once 'Text/Diff.php';
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include_once 'Text/Diff/Renderer.php';
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include_once 'Text/Diff/Renderer/inline.php';
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function diff_help($section) {
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switch ($section) {
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case 'admin/help#diff':
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case 'admin/modules#description':
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case 'admin/diff':
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return "Show difference between a revision and the 1st revision.";
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}
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}
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/**
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* Implementation of hook_perm().
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*/
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function diff_perm() {
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return array('access diff');
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}
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/**
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* Implementation of hook_menu().
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*/
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function diff_menu($may_cache) {
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$items = array();
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/* if ($may_cache) {
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}
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*/
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if (arg(0) == 'node' && is_numeric(arg(1)))
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{
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$node = node_load(array('nid' => arg(1)));
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if ($node->nid)
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{
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if ($node->revisions)
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{
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$items[] = array('path' => 'node/'. arg(1) .'/diff', 'title' => t('diff'),
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'callback' => 'diff_page',
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'access' => user_access('access diff'),
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// 'weight' => 2,
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'type' => MENU_LOCAL_TASK);
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}
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}
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}
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return $items;
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}
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/**
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* Show a difference between revisions.
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*/
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function diff_page($rid1=false, $rid2=false)
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{
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if ($rid1 !== false && $rid2 !== false)
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{
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_diff_show_revision(arg(1), arg(3), arg(4));
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}
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else
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{
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_diff_show_page(arg(1));
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}
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}
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function _diff_show_revision($nid, $rid1, $rid2 )
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{
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$node = node_load(array('nid' => $nid));
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$r1 = node_revision_load($node, $rid1);
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//$rid2 = $rid -1;
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$r2 = node_revision_load($node, $rid2);
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$diff = &new Text_Diff(explode("\n", $r2->body), explode("\n",$r1->body));
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$renderer = &new Text_Diff_Renderer_inline();
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$node = $r1;
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$r1->body = $renderer->render($diff);
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//$r1->body = preg_replace("\n","<br />", $r1->body);
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// This is stupid !
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//$r1->body = implode("<br />",explode("\n", $r1->body));
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$r1 = node_prepare($r1);
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print theme ('page', theme('node', $r1));
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}
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/*
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function _diff_show_revision($nid, $rid)
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{
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$node = node_load(array('nid' => $nid));
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$r1 = node_revision_load($node, $rid);
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$rid2 = $rid -1;
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$r2 = node_revision_load($node, 0);
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$diff = &new Text_Diff(explode("\n", $r2->body), explode("\n",$r1->body));
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$renderer = &new Text_Diff_Renderer_unified();
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$node = $r1;
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$r1->body = $renderer->render($diff);
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$r1 = node_prepare($r1);
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print theme ('page', theme('node', $r1));
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}
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*/
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/*
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function _diff_show_revision($nid, $rid)
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{
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$node = node_load(array('nid' => $nid));
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$r1 = node_revision_load($node, $rid);
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$rid2 = $rid -1;
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$r2 = node_revision_load($node, 0);
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$r1 = node_prepare($r1);
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$r2 = node_prepare($r2);
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$diff = &new Text_Diff(explode("\n", $r2->body), explode("\n",$r1->body));
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$renderer = &new Text_Diff_Renderer_unified();
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$node = $r1;
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$r1->body = $renderer->render($diff);
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print theme ('page', theme('node', $r1));
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}
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*/
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function _diff_show_page($nid)
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{
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$node = node_load(array('nid' => $nid));
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drupal_set_title($node->title);
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$header = array(t('Older revisions'), t('Operations'));
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$last_key = count($node->revisions) - 1;
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foreach ($node->revisions as $key => $revision)
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{
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if ($key != 0) {
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$prev = l(t('previous'), "node/$node->nid/diff/$key/".($key-1));
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$first = l(t('first'), "node/$node->nid/diff/$key/0");
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}
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if ($key != $last_key) {
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$last = l(t('last'), "node/$node->nid/diff/$key/$last_key");
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} else {
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$last="";
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}
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$rows[] = array(t('revision #%r revised by %u on %d', array('%r' => $key, '%u' => format_name(user_load(array('uid' => $revision['uid']))), '%d' => format_date($revision['timestamp'], 'small'))) . ($revision['history'] ? '<br /><small>'. $revision['history'] .'</small>' : ''), $prev, $first, $last);
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}
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$output .= theme('table', $header, $rows);
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print theme('page', $output);
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}
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?>
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