function diff_diffs_show in Diff 6

Same name and namespace in other branches

1. 5.2 diff.module \diff_diffs_show()
2. 5 diff.module \diff_diffs_show()
3. 6.2 diff.pages.inc \diff_diffs_show()
4. 7.3 diff.pages.inc \diff_diffs_show()
5. 7.2 diff.pages.inc \diff_diffs_show()

Create output string for a comparison of 'node' between versions 'old_vid' and 'new_vid'.

Parameters

$node: Node on which to perform comparison

$old_vid: Version ID of the old revision.

$new_vid: Version ID of the new revision.

1 string reference to 'diff_diffs_show'

diff_menu in ./diff.module

Implementation of hook_menu() The menu path 'node/$nid/revisions' is overriden with 'diff_diffs'.

File

./diff.module, line 236

Provides functionality to show a diff between two node revisions.

Code

function diff_diffs_show(&$node, $old_vid, $new_vid) {

  // Set same title as on the 'Revisions' tab for consistency
  drupal_set_title(t('Revisions for %title', array(
    '%title' => $node->title,
  )));
  $lame_revisions = node_revision_list($node);
  foreach ($lame_revisions as $revision) {
    $node_revisions[$revision->vid] = $revision;
  }
  $old_node = node_load($node->nid, $old_vid);
  $new_node = node_load($node->nid, $new_vid);

  // Generate table header (date, username, logmessage).
  $old_header = t('!date by !username', array(
    '!date' => l(format_date($old_node->revision_timestamp), "node/{$node->nid}/revisions/{$old_node->vid}/view"),
    '!username' => theme('username', $node_revisions[$old_vid]),
  ));
  $new_header = t('!date by !username', array(
    '!date' => l(format_date($new_node->revision_timestamp), "node/{$node->nid}/revisions/{$new_node->vid}/view"),
    '!username' => theme('username', $node_revisions[$new_vid]),
  ));
  $old_log = $old_node->log != '' ? '<p class="revision-log">' . filter_xss($old_node->log) . '</p>' : '';
  $new_log = $new_node->log != '' ? '<p class="revision-log">' . filter_xss($new_node->log) . '</p>' : '';

  // Generate previous diff/next diff links.
  $next_vid = _diff_get_next_vid($node_revisions, $new_vid);
  if ($next_vid) {
    $next_link = l(t('next diff >'), 'node/' . $node->nid . '/revisions/view/' . $new_vid . '/' . $next_vid);
  }
  else {
    $next_link = '';
  }
  $prev_vid = _diff_get_previous_vid($node_revisions, $old_vid);
  if ($prev_vid) {
    $prev_link = l(t('< previous diff'), 'node/' . $node->nid . '/revisions/view/' . $prev_vid . '/' . $old_vid);
  }
  else {
    $prev_link = '';
  }
  $cols = _diff_default_cols();
  $header = _diff_default_header($old_header, $new_header);
  $rows = array();
  if ($old_log || $new_log) {
    $rows[] = array(
      array(
        'data' => $old_log,
        'colspan' => 2,
      ),
      array(
        'data' => $new_log,
        'colspan' => 2,
      ),
    );
  }
  $rows[] = array(
    array(
      'data' => $prev_link,
      'class' => 'diff-prevlink',
      'colspan' => 2,
    ),
    array(
      'data' => $next_link,
      'class' => 'diff-nextlink',
      'colspan' => 2,
    ),
  );
  $rows = array_merge($rows, _diff_body_rows($old_node, $new_node));
  $output = theme('diff_table', $header, $rows, array(
    'class' => 'diff',
  ), NULL, $cols);
  if ($node->vid == $new_vid) {
    $output .= '<div class="diff-section-title">' . t('Current revision:') . '</div>';
  }
  else {
    $output .= '<div class="diff-section-title">' . t('Revision of !new_date:', array(
      '!new_date' => format_date($new_node->revision_timestamp),
    )) . '</div>';
  }

  // Don't include node links (final argument) when viewing the diff.
  $output .= node_view($new_node, FALSE, FALSE, FALSE);
  return $output;
}