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<?php
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/**
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* @file
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* Menu callbacks for hook_menu().
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*/
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/**
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* Menu callback - show latest diff for a given node.
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*/
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function diff_latest($node) {
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$revisions = node_revision_list($node);
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$new = array_shift($revisions);
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$old = array_shift($revisions);
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drupal_goto("node/{$node->nid}/revisions/view/{$old->vid}/{$new->vid}");
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}
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/**
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* Menu callback - an overview table of older revisions.
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*
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* Generate an overview table of older revisions of a node and provide
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* an input form to select two revisions for a comparison.
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*/
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function diff_diffs_overview($node) {
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drupal_set_title(t('Revisions for %title', array('%title' => $node->title)), PASS_THROUGH);
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return drupal_get_form('diff_node_revisions', $node);
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}
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/**
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* Input form to select two revisions.
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*/
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function diff_node_revisions($form, $form_state, $node) {
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$form['nid'] = array(
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'#type' => 'hidden',
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'#value' => $node->nid,
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);
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$revision_list = node_revision_list($node);
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if (count($revision_list) > REVISION_LIST_SIZE) {
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// If the list of revisions is longer than the number shown on one page
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// split the array.
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$page = isset($_GET['page']) ? $_GET['page'] : '0';
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$revision_chunks = array_chunk(node_revision_list($node), REVISION_LIST_SIZE);
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$revisions = $revision_chunks[$page];
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// Set up global pager variables as would 'pager_query' do.
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// These variables are then used in the theme('pager') call later.
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global $pager_page_array, $pager_total, $pager_total_items;
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$pager_total_items[0] = count($revision_list);
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$pager_total[0] = ceil(count($revision_list) / REVISION_LIST_SIZE);
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$pager_page_array[0] = max(0, min($page, ((int) $pager_total[0]) - 1));
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}
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else {
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$revisions = $revision_list;
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}
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$revert_permission = FALSE;
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if ((user_access('revert revisions') || user_access('administer nodes')) && node_access('update', $node)) {
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$revert_permission = TRUE;
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}
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$delete_permission = FALSE;
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if ((user_access('delete revisions') || user_access('administer nodes')) && node_access('delete', $node)) {
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$delete_permission = TRUE;
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}
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foreach ($revisions as $revision) {
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$operations = array();
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$revision_ids[$revision->vid] = '';
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$revision_log = ($revision->log != '') ? '<p class="revision-log">' . filter_xss($revision->log) . '</p>' : '';
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if ($revision->current_vid > 0) {
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$form['info'][$revision->vid] = array(
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'#markup' => t('!date by !username', array(
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'!date' => l(format_date($revision->timestamp, 'small'), "node/$node->nid"),
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'!username' => theme('username', array('account' => $revision)))) . $revision_log,
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);
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}
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else {
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$diff_date = l(format_date($revision->timestamp, 'small'), "node/$node->nid/revisions/$revision->vid/view");
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$form['info'][$revision->vid] = array(
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'#markup' => t('!date by !username', array(
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'!date' => $diff_date,
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'!username' => theme('username', array('account' => $revision)))
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) . $revision_log,
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);
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if ($revert_permission) {
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$operations[] = array(
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'#markup' => l(t('Revert'), "node/$node->nid/revisions/$revision->vid/revert"),
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);
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}
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if ($delete_permission) {
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$operations[] = array(
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'#markup' => l(t('Delete'), "node/$node->nid/revisions/$revision->vid/delete"),
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);
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}
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// Set a dummy, even if the user has no permission for the other
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// operations, so that we can check if the operations array is
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// empty to know if the row denotes the current revision.
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$operations[] = array();
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}
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$form['operations'][$revision->vid] = $operations;
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}
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$new_vid = key($revision_ids);
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next($revision_ids);
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$old_vid = key($revision_ids);
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$form['diff']['old'] = array(
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'#type' => 'radios',
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'#options' => $revision_ids,
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'#default_value' => $old_vid,
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);
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$form['diff']['new'] = array(
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'#type' => 'radios',
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'#options' => $revision_ids,
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'#default_value' => $new_vid,
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);
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$form['submit'] = array('#type' => 'submit', '#value' => t('Compare'));
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if (count($revision_list) > REVISION_LIST_SIZE) {
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$form['#suffix'] = theme('pager');
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}
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$form['#attached'] = diff_build_attachments(TRUE);
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return $form;
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}
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/**
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* Submit code for input form to select two revisions.
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*/
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function diff_node_revisions_submit($form, &$form_state) {
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// The ids are ordered so the old revision is always on the left.
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$old_vid = min($form_state['values']['old'], $form_state['values']['new']);
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$new_vid = max($form_state['values']['old'], $form_state['values']['new']);
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$form_state['redirect'] = 'node/' . $form_state['values']['nid'] . '/revisions/view/' . $old_vid . '/' . $new_vid;
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}
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/**
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* Validation for input form to select two revisions.
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*/
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function diff_node_revisions_validate($form, &$form_state) {
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$old_vid = $form_state['values']['old'];
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$new_vid = $form_state['values']['new'];
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if ($old_vid == $new_vid || !$old_vid || !$new_vid) {
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form_set_error('diff', t('Select different revisions to compare.'));
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}
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}
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/**
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* Create a comparison for the node between versions 'old_vid' and 'new_vid'.
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*
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* @param object $node
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* Node on which to perform comparison
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* @param integer $old_vid
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* Version ID of the old revision.
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* @param integer $new_vid
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* Version ID of the new revision.
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*/
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function diff_diffs_show($node, $old_vid, $new_vid, $state = NULL) {
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// Attaches the CSS.
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$build['#attached'] = diff_build_attachments();
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$default_state = variable_get('diff_default_state_node', 'raw');
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if (empty($state)) {
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$state = $default_state;
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}
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$state = str_replace('-', '_', $state);
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if (!array_key_exists($state, diff_available_states())) {
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$state = $default_state;
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}
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// Same title as the 'Revisions' tab. Blocked by non-page requests.
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if (node_is_page($node)) {
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drupal_set_title(t('Revisions for %title', array('%title' => $node->title)), PASS_THROUGH);
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}
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$node_revisions = node_revision_list($node);
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$old_node = node_load($node->nid, $old_vid);
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$new_node = node_load($node->nid, $new_vid);
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// Generate table header (date, username, log message).
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$old_header = t('!date by !username', array(
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'!date' => l(format_date($old_node->revision_timestamp), "node/$node->nid/revisions/$old_node->vid/view", array('absolute' => 1)),
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'!username' => theme('username', array('account' => $node_revisions[$old_vid])),
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));
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$new_header = t('!date by !username', array(
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'!date' => l(format_date($new_node->revision_timestamp), "node/$node->nid/revisions/$new_node->vid/view", array('absolute' => 1)),
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'!username' => theme('username', array('account' => $node_revisions[$new_vid])),
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));
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$old_log = $old_node->log != '' ? '<p class="revision-log">' . filter_xss($old_node->log) . '</p>' : '';
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$new_log = $new_node->log != '' ? '<p class="revision-log">' . filter_xss($new_node->log) . '</p>' : '';
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// Generate previous diff/next diff links.
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$nav_suffix = ($default_state != $state) ? '/' . str_replace('_', '-', $state) : '';
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$next_vid = _diff_get_next_vid($node_revisions, $new_vid);
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if ($next_vid) {
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$next_link = l(t('Next difference >'), 'node/' . $node->nid . '/revisions/view/' . $new_vid . '/' . $next_vid . $nav_suffix, array('absolute' => 1));
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}
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else {
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$next_link = '';
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}
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$prev_vid = _diff_get_previous_vid($node_revisions, $old_vid);
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if ($prev_vid) {
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$prev_link = l(t('< Previous difference'), 'node/' . $node->nid . '/revisions/view/' . $prev_vid . '/' . $old_vid . $nav_suffix, array('absolute' => 1));
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}
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else {
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$prev_link = '';
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}
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$header = _diff_default_header($old_header, $new_header);
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$rows = array();
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if ($old_log || $new_log) {
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$rows['logs'] = array(
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array(
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'data' => $old_log,
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'colspan' => 2,
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),
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array(
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'data' => $new_log,
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'colspan' => 2,
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),
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);
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}
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$rows['navigation'] = array(
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array(
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'data' => $prev_link,
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'class' => array('diff-prevlink'),
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'colspan' => 2,
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),
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array(
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'data' => $next_link,
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'class' => array('diff-nextlink'),
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'colspan' => 2,
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),
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);
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$links = array();
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foreach (diff_available_states('node') as $alternative_state => $label) {
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if ($alternative_state == $state) {
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// @todo: Should we show both or just alternatives?
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}
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$links[$alternative_state] = array(
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'title' => $label,
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'href' => "node/{$node->nid}/revisions/view/{$old_vid}/{$new_vid}" . ($alternative_state == $default_state ? '' : '/' . str_replace('_', '-', $alternative_state)),
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);
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}
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if (count($links) > 1) {
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$state_links = theme('links', array(
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'links' => $links,
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'attributes' => array('class' => array('links', 'inline')),
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));
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$rows['states'] = array(
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array(
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'data' => $state_links,
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'class' => 'diff-links',
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'colspan' => 4,
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),
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);
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}
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$rows = array_merge($rows, _diff_body_rows($old_node, $new_node, $state));
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$build['diff_table'] = array(
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'#theme' => 'table__diff__standard',
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'#header' => $header,
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'#rows' => $rows,
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'#attributes' => array('class' => array('diff')),
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'#colgroups' => _diff_default_cols(),
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'#sticky' => FALSE,
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);
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270
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// Allow users to hide or set the display mode of the preview.
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if (node_is_page($node) && $view_mode = variable_get('diff_view_mode_preview_node_' . $new_node->type, 'full')) {
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$header = '';
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if ($node->vid == $new_vid) {
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$header .= '<div class="diff-section-title">' . t('Current revision:') . '</div>';
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}
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else {
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$header .= '<div class="diff-section-title">' . t('Revision of @new_date:', array('@new_date' => format_date($new_node->revision_timestamp))) . '</div>';
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}
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$build['diff_preview']['header']['#markup'] = $header;
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// Don't include node links or comments when viewing the diff.
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$build['diff_preview']['content'] = node_view($new_node, $view_mode);
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if (isset($build['diff_preview']['content']['links'])) {
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unset($build['diff_preview']['content']['links']);
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}
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if (isset($build['diff_preview']['content']['comments'])) {
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unset($build['diff_preview']['content']['comments']);
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}
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}
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return $build;
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}
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292
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293
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/**
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294
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* Creates an array of rows which represent the difference between nodes.
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295
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*
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296
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* @param object $old_node
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297
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* Node for comparison which will be displayed on the left side.
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* @param object $new_node
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299
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* Node for comparison which will be displayed on the right side.
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300
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* @param boolean $state
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301
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* The state to render for the diff.
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302
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*/
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303
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function _diff_body_rows($old_node, $new_node, $state = 'raw') {
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304
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// This is an unique index only, so no need for drupal_static().
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305
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static $table_row_counter = 0;
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306
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307
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if ($theme = variable_get('diff_theme', 'default')) {
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drupal_add_css(drupal_get_path('module', 'diff') . "/css/diff.{$theme}.css");
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}
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310
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module_load_include('inc', 'diff', 'includes/node');
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$rows = array();
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$any_visible_change = FALSE;
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$context = array(
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'entity_type' => 'node',
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'states' => array($state),
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'view_mode' => 'diff_standard',
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);
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$node_diffs = diff_compare_entities($old_node, $new_node, $context);
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// Track line numbers between multiple diffs.
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$line_stats = array(
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'counter' => array('x' => 0, 'y' => 0),
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'offset' => array('x' => 0, 'y' => 0),
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);
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328
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// Render diffs for each.
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foreach ($node_diffs as $node_diff) {
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$show_header = !empty($node_diff['#name']);
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// These are field level settings.
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if ($show_header && isset($node_diff['#settings']['show_header'])) {
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$show_header = $show_header && $node_diff['#settings']['show_header'];
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}
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// Line counting and line header options.
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337
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if (empty($node_diff['#settings']['line_counter'])) {
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$line_counter = FALSE;
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}
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else {
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$line_counter = $node_diff['#settings']['line_counter'];
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|
342
|
}
|
|
343
|
// Every call to 'line' resets the counters.
|
|
344
|
if ($line_counter) {
|
|
345
|
$line_stats['counter']['x'] = 0;
|
|
346
|
$line_stats['counter']['y'] = 0;
|
|
347
|
if ($line_counter == 'line' && 0) {
|
|
348
|
$line_stats['offset']['x'] = 0;
|
|
349
|
$line_stats['offset']['y'] = 0;
|
|
350
|
}
|
|
351
|
$line_stats_ref = $line_stats;
|
|
352
|
}
|
|
353
|
else {
|
|
354
|
$line_stats_ref = NULL;
|
|
355
|
}
|
|
356
|
|
|
357
|
list($old, $new) = diff_extract_state($node_diff, $state);
|
|
358
|
if ($node_diff_rows = diff_get_rows($old, $new, $line_counter && $line_counter != 'hidden', $line_stats_ref)) {
|
|
359
|
if ($line_counter && $line_counter != 'line') {
|
|
360
|
$line_stats['offset']['x'] += $line_stats_ref['counter']['x'];
|
|
361
|
$line_stats['offset']['y'] += $line_stats_ref['counter']['y'];
|
|
362
|
}
|
|
363
|
if ($show_header) {
|
|
364
|
$rows['diff-header-' . $table_row_counter++] = array(
|
|
365
|
array(
|
|
366
|
'data' => t('Changes to %name', array('%name' => $node_diff['#name'])),
|
|
367
|
'class' => 'diff-section-title',
|
|
368
|
'colspan' => 4,
|
|
369
|
),
|
|
370
|
);
|
|
371
|
}
|
|
372
|
// To avoid passing counter to the Diff engine, index rows manually here
|
|
373
|
// to allow modules to interact with the table. i.e. no array_merge().
|
|
374
|
foreach ($node_diff_rows as $row) {
|
|
375
|
$rows['diff-row-' . $table_row_counter++] = $row;
|
|
376
|
}
|
|
377
|
$any_visible_change = TRUE;
|
|
378
|
}
|
|
379
|
}
|
|
380
|
if (!$any_visible_change) {
|
|
381
|
$rows['diff-empty-' . $table_row_counter++] = array(
|
|
382
|
array(
|
|
383
|
'data' => t('No visible changes'),
|
|
384
|
'class' => 'diff-section-title',
|
|
385
|
'colspan' => 4,
|
|
386
|
),
|
|
387
|
);
|
|
388
|
// @todo: revise this.
|
|
389
|
// Needed to keep safari happy.
|
|
390
|
$rows['diff-empty-' . $table_row_counter++] = array(
|
|
391
|
array('data' => ''),
|
|
392
|
array('data' => ''),
|
|
393
|
array('data' => ''),
|
|
394
|
array('data' => ''),
|
|
395
|
);
|
|
396
|
}
|
|
397
|
|
|
398
|
return $rows;
|
|
399
|
}
|
|
400
|
|
|
401
|
/**
|
|
402
|
* Generic callback to compare two entities.
|
|
403
|
*/
|
|
404
|
function diff_compare_entities($left_entity, $right_entity, $context) {
|
|
405
|
$entity_type = $context['entity_type'];
|
|
406
|
list(, , $bundle) = entity_extract_ids($entity_type, $right_entity);
|
|
407
|
$context['bundle'] = $bundle;
|
|
408
|
$context['old_entity'] = $left_entity;
|
|
409
|
$context['new_entity'] = $right_entity;
|
|
410
|
$context += array(
|
|
411
|
'states' => array('raw'),
|
|
412
|
'view_mode' => FALSE,
|
|
413
|
'language' => LANGUAGE_NONE,
|
|
414
|
);
|
|
415
|
|
|
416
|
$diff = module_invoke_all('entity_diff', $left_entity, $right_entity, $context);
|
|
417
|
|
|
418
|
// Allow other modules to interact directly with the results.
|
|
419
|
drupal_alter('entity_diff', $diff, $context);
|
|
420
|
|
|
421
|
// We start off assuming all form elements are in the correct order.
|
|
422
|
$diff['#sorted'] = TRUE;
|
|
423
|
|
|
424
|
// Field rows. Recurse through all child elements.
|
|
425
|
$count = 0;
|
|
426
|
foreach (element_children($diff) as $key) {
|
|
427
|
if (!isset($diff[$key]['#states'])) {
|
|
428
|
$diff[$key]['#states'] = array();
|
|
429
|
}
|
|
430
|
|
|
431
|
// Ensure that the element follows the new #states format.
|
|
432
|
if (isset($diff[$key]['#old'])) {
|
|
433
|
$diff[$key]['#states']['raw']['#old'] = $diff[$key]['#old'];
|
|
434
|
unset($diff[$key]['#old']);
|
|
435
|
}
|
|
436
|
if (isset($diff[$key]['#new'])) {
|
|
437
|
$diff[$key]['#states']['raw']['#new'] = $diff[$key]['#new'];
|
|
438
|
unset($diff[$key]['#new']);
|
|
439
|
}
|
|
440
|
|
|
441
|
// If requested, we can convert the .
|
|
442
|
foreach (array('raw', 'rendered') as $state) {
|
|
443
|
if (in_array($state . '_plain', $context['states'])) {
|
|
444
|
diff_markdown_state($diff[$key], $state);
|
|
445
|
}
|
|
446
|
}
|
|
447
|
|
|
448
|
// Assign a decimal placeholder weight to preserve original array order.
|
|
449
|
if (!isset($diff[$key]['#weight'])) {
|
|
450
|
$diff[$key]['#weight'] = $count / 1000;
|
|
451
|
}
|
|
452
|
else {
|
|
453
|
// If one child element has a weight then we will need to sort later.
|
|
454
|
unset($diff['#sorted']);
|
|
455
|
}
|
|
456
|
$count++;
|
|
457
|
}
|
|
458
|
|
|
459
|
// One of the children has a #weight.
|
|
460
|
if (!isset($diff['#sorted'])) {
|
|
461
|
uasort($diff, 'element_sort');
|
|
462
|
}
|
|
463
|
|
|
464
|
// Process the array and get line counts per field.
|
|
465
|
array_walk($diff, 'diff_process_state_lines');
|
|
466
|
|
|
467
|
return $diff;
|
|
468
|
}
|
|
469
|
|
|
470
|
function diff_process_state_lines(&$diff, $key) {
|
|
471
|
foreach ($diff['#states'] as $state => $data) {
|
|
472
|
if (isset($data['#old'])) {
|
|
473
|
if (is_string($data['#old'])) {
|
|
474
|
$diff['#states'][$state]['#old'] = explode("\n", $data['#old']);
|
|
475
|
}
|
|
476
|
$diff['#states'][$state]['#count_old'] = count($diff['#states'][$state]['#old']);
|
|
477
|
}
|
|
478
|
else {
|
|
479
|
$diff['#states'][$state]['#count_old'] = 0;
|
|
480
|
}
|
|
481
|
if (isset($data['#new'])) {
|
|
482
|
if (is_string($data['#new'])) {
|
|
483
|
$diff['#states'][$state]['#new'] = explode("\n", $data['#new']);
|
|
484
|
}
|
|
485
|
$diff['#states'][$state]['#count_new'] = count($diff['#states'][$state]['#new']);
|
|
486
|
}
|
|
487
|
else {
|
|
488
|
$diff['#states'][$state]['#count_new'] = 0;
|
|
489
|
}
|
|
490
|
}
|
|
491
|
}
|
|
492
|
|
|
493
|
/**
|
|
494
|
* Helper function to render plain states from the corresponding raw state.
|
|
495
|
*
|
|
496
|
* @param array $diff
|
|
497
|
* The Diff Engine output array.
|
|
498
|
* @param string $state
|
|
499
|
* The state to markdown.
|
|
500
|
*/
|
|
501
|
function diff_markdown_state(&$diff, $state) {
|
|
502
|
list($plain_old, $plain_new) = diff_extract_state($diff, $state . '_plain');
|
|
503
|
list($old, $new) = diff_extract_state($diff, $state);
|
|
504
|
$markdown = FALSE;
|
|
505
|
if (isset($diff['#settings']) && !empty($diff['#settings']['markdown'])) {
|
|
506
|
if (function_exists($diff['#settings']['markdown'])) {
|
|
507
|
$markdown = $diff['#settings']['markdown'];
|
|
508
|
}
|
|
509
|
}
|
|
510
|
|
|
511
|
if (!isset($plain_old) && isset($old)) {
|
|
512
|
if (is_array($old)) {
|
|
513
|
$diff['#states'][$state . '_plain']['#old'] = $markdown ? array_map($markdown, $old) : $old;
|
|
514
|
}
|
|
515
|
else {
|
|
516
|
$diff['#states'][$state . '_plain']['#old'] = $markdown ? $markdown($old) : $old;
|
|
517
|
}
|
|
518
|
}
|
|
519
|
if (!isset($plain_new) && isset($new)) {
|
|
520
|
if (is_array($new)) {
|
|
521
|
$diff['#states'][$state . '_plain']['#new'] = $markdown ? array_map($markdown, $new) : $new;
|
|
522
|
}
|
|
523
|
else {
|
|
524
|
$diff['#states'][$state . '_plain']['#new'] = $markdown ? $markdown($new) : $new;
|
|
525
|
}
|
|
526
|
}
|
|
527
|
}
|
|
528
|
|
|
529
|
/**
|
|
530
|
* Get the entry in the revisions list after $vid.
|
|
531
|
*
|
|
532
|
* @param array $node_revisions
|
|
533
|
* Array of node revision IDs in descending order.
|
|
534
|
* @param int $vid
|
|
535
|
* Version ID to look for.
|
|
536
|
*
|
|
537
|
* @return boolean|integer
|
|
538
|
* Returns FALSE if $vid is the last entry.
|
|
539
|
*/
|
|
540
|
function _diff_get_next_vid($node_revisions, $vid) {
|
|
541
|
$previous = NULL;
|
|
542
|
foreach ($node_revisions as $revision) {
|
|
543
|
if ($revision->vid == $vid) {
|
|
544
|
return ($previous ? $previous->vid : FALSE);
|
|
545
|
}
|
|
546
|
$previous = $revision;
|
|
547
|
}
|
|
548
|
return FALSE;
|
|
549
|
}
|
|
550
|
|
|
551
|
/**
|
|
552
|
* Get the entry in the revision list before $vid.
|
|
553
|
*
|
|
554
|
* @param array $node_revisions
|
|
555
|
* Array of node revision IDs in descending order.
|
|
556
|
* @param integer $vid
|
|
557
|
* Version ID to look for.
|
|
558
|
*
|
|
559
|
* @return boolean|integer
|
|
560
|
* Returns FALSE if $vid is the first entry.
|
|
561
|
*/
|
|
562
|
function _diff_get_previous_vid($node_revisions, $vid) {
|
|
563
|
$previous = NULL;
|
|
564
|
foreach ($node_revisions as $revision) {
|
|
565
|
if ($previous && $previous->vid == $vid) {
|
|
566
|
return $revision->vid;
|
|
567
|
}
|
|
568
|
$previous = $revision;
|
|
569
|
}
|
|
570
|
return FALSE;
|
|
571
|
}
|
|
572
|
|
|
573
|
/**
|
|
574
|
* Helper function to create default 'cols' array for diff table.
|
|
575
|
*/
|
|
576
|
function _diff_default_cols() {
|
|
577
|
return array(
|
|
578
|
array(
|
|
579
|
array(
|
|
580
|
'class' => 'diff-marker',
|
|
581
|
),
|
|
582
|
array(
|
|
583
|
'class' => 'diff-content',
|
|
584
|
),
|
|
585
|
array(
|
|
586
|
'class' => 'diff-marker',
|
|
587
|
),
|
|
588
|
array(
|
|
589
|
'class' => 'diff-content',
|
|
590
|
),
|
|
591
|
),
|
|
592
|
);
|
|
593
|
}
|
|
594
|
|
|
595
|
/**
|
|
596
|
* Helper function to create default 'header' array for diff table.
|
|
597
|
*/
|
|
598
|
function _diff_default_header($old_header = '', $new_header = '') {
|
|
599
|
return array(
|
|
600
|
array(
|
|
601
|
'data' => $old_header,
|
|
602
|
'colspan' => 2,
|
|
603
|
),
|
|
604
|
array(
|
|
605
|
'data' => $new_header,
|
|
606
|
'colspan' => 2,
|
|
607
|
),
|
|
608
|
);
|
|
609
|
}
|
|
610
|
|
|
611
|
/**
|
|
612
|
* Show the inline diff for a given node, vid.
|
|
613
|
*
|
|
614
|
* If vid = 0 or no previous vid exists for the given revision returns the
|
|
615
|
* normally rendered content of the specified revision.
|
|
616
|
*/
|
|
617
|
function diff_inline_show($node, $vid = 0, $metadata = TRUE) {
|
|
618
|
$new_node = $vid ? node_load($node->nid, $vid, TRUE) : clone $node;
|
|
619
|
node_build_content($new_node);
|
|
620
|
$new = drupal_render($new_node->content);
|
|
621
|
|
|
622
|
$old = $vid ? _diff_get_previous_vid(node_revision_list($node), $vid) : 0;
|
|
623
|
if ($old) {
|
|
624
|
$old_node = node_load($node->nid, $old, TRUE);
|
|
625
|
node_build_content($old_node);
|
|
626
|
$old = drupal_render($old_node->content);
|
|
627
|
$output = $metadata ? theme('diff_inline_metadata', array('node' => $new_node)) : '';
|
|
628
|
$output .= diff_get_inline($old, $new);
|
|
629
|
return $output;
|
|
630
|
}
|
|
631
|
return $new;
|
|
632
|
}
|
