'. t('The diff module overwrites the normal revisions view. The revisions table is enhanced with a possibility to view the difference between two node revisions. Users with the %view_revisions permission will also be able to view the changes between any two selected revisions. You may disable this for individual content types on the content type configuration page. This module also provides a nifty %preview_changes button while editing a post.', array('%preview_changes' => t('Preview changes'), '%view_revisions' => t('view revisions'))) .'';
return $output;
case 'node/%/revisions/%/view': // the following string is copied from string copied from node_help('node/%/revisions')
return ''. t('The revisions let you track differences between multiple versions of a post.') .'
';
case 'node/%/revisions/view/%/%':
return ''. t('Comparing two revisions:') .'
';
}
}
/**
* Implementation of hook_menu()
*/
function diff_menu() {
$items = array();
/**
* By using MENU_LOCAL_TASK (and 'tab_parent') we can get the various revision-views to
* show the View|Edit|Revision-tabs of the node on top, and have the Revisions-tab open.
* To avoid creating/showing any extra tabs or sub-tabs (tasks below top level) for the
* various paths (i.e. "Diff", "Show latest" and "Show a specific revision") that need
* a revision-id (vid) parameter, we make sure to set 'tab_parent' a bit odd.
* This solution may not be the prettiest one, but by avoiding having two _LOCAL_TASKs
* sharing a parent that can be accessed by its full path, it seems to work as desired.
* Breadcrumbs work decently, at least the node link is among the crumbs. For some reason
* any breadcrumbs "before/above" the node is only seen at 'node/%node/revisions/%/view'.
*/
$items['node/%node/revisions/list'] = array(
// Not used directly, but was created to get the other menu items to work well
'title' => 'List revisions',
'page callback' => 'diff_diffs_overview',
'type' => MENU_DEFAULT_LOCAL_TASK,
'access callback' => '_node_revision_access',
'access arguments' => array(1),
);
$items['node/%node/revisions/view/%/%'] = array(
'title' => 'Diff',
'page callback' => 'diff_diffs_show',
'page arguments' => array(1, 4, 5),
'type' => MENU_LOCAL_TASK,
'access callback' => '_node_revision_access',
'access arguments' => array(1),
'tab_parent' => 'node/%/revisions/list',
);
$items['node/%node/revisions/view/latest'] = array(
'title' => 'Show latest diff',
'page callback' => 'diff_latest',
'page arguments' => array(1),
'type' => MENU_LOCAL_TASK,
'access callback' => '_node_revision_access',
'access arguments' => array(1),
'tab_parent' => 'node/%/revisions/view',
);
return $items;
}
// Menu callback - show latest diff for a given node.
function diff_latest($node) {
$revisions = node_revision_list($node);
$new = array_shift($revisions);
$old = array_shift($revisions);
drupal_goto("node/$node->nid/revisions/view/$old->vid/$new->vid");
}
/**
* Implementation of hook_menu_alter().
*/
function diff_menu_alter(&$callbacks) {
// Overwrite the default 'Revisions' page
$callbacks['node/%node/revisions']['page callback'] = 'diff_diffs_overview';
$callbacks['node/%node/revisions']['module'] = 'diff';
unset($callbacks['node/%node/revisions']['file']);
$callbacks['node/%node/revisions/%/view']['tab_parent'] = 'node/%/revisions/list';
$callbacks['node/%node/revisions/%/revert']['tab_parent'] = 'node/%/revisions/%/view';
$callbacks['node/%node/revisions/%/delete']['tab_parent'] = 'node/%/revisions/%/view';
return;
}
/**
* Form for selecting two consecutive revisions for inline diff'ing.
*/
function diff_inline_form($form_state, $node, $revisions) {
$form = array();
$form['nid'] = array(
'#type' => 'value',
'#value' => $node->nid,
);
$form['#theme'] = 'diff_inline_form';
if (!empty($_SESSION['diff_inline_highlight'])) {
$rev = count($revisions);
$pad_length = strlen($rev);
// Build list of revisions. Label using sequential numbers instead of vids
// for easier reading.
$options = array();
foreach ($revisions as $r) {
$options[$r->vid] = t("#!num by !name", array('!num' => str_pad($rev, $pad_length, '0', STR_PAD_LEFT), '!date' => format_date($r->timestamp, 'small'), '!name' => $r->name));
$rev--;
}
$form['vid'] = array(
'#type' => 'select',
'#options' => $options,
'#default_value' => $node->vid,
);
$form['submit'] = array(
'#type' => 'submit',
'#value' => t('View revision'),
'#submit' => array('diff_inline_on'),
);
$form['toggle'] = array(
'#type' => 'submit',
'#value' => t('Turn off highlighting'),
'#submit' => array('diff_inline_off'),
);
}
else {
$form['vid'] = array(
'#type' => 'value',
'#value' => $node->vid,
);
$form['toggle'] = array(
'#type' => 'submit',
'#value' => t('Highlight changes'),
'#submit' => array('diff_inline_on'),
);
}
return $form;
}
/**
* Diff inline form submit handler. Retrieves node/revision information and
* directs user to the correct node revision page.
*/
function diff_inline_on(&$form, &$form_state) {
$_SESSION['diff_inline_highlight'] = TRUE;
$form_state['redirect'] = "node/{$form_state['values']['nid']}/revisions/{$form_state['values']['vid']}/view";
}
/**
* Diff inline form toggle submit handler. Turns off inline diff highlighting.
*/
function diff_inline_off(&$form, &$form_state) {
$_SESSION['diff_inline_highlight'] = FALSE;
$form_state['redirect'] = "node/{$form_state['values']['nid']}";
}
/**
* Theme function for diff inline forms.
*/
function theme_diff_inline_form($form) {
$output = "";
return $output;
}
/**
* Implementation of hook_nodeapi().
*/
function diff_nodeapi(&$node, $op, $teaser, $page) {
switch ($op) {
case 'view':
if ($page && user_access('view revisions') && variable_get('show_diff_inline_'. $node->type, FALSE)) {
$revisions = node_revision_list($node);
// Only render the form if there are multiple revisions
if (count($revisions) > 1) {
drupal_add_css(drupal_get_path('module', 'diff') .'/diff.css', 'module', 'all', FALSE);
$node->content['diff_inline'] = array(
'#value' => drupal_get_form('diff_inline_form', $node, $revisions),
'#weight' => -100,
);
$vids = array_keys($revisions);
$position = array_search($node->vid, $vids) + 1;
$old = isset($vids[$position]) ? $vids[$position] : NULL;
// Only highlight changes if inline highlighting is enabled & there
// is actually an older revision to diff against.
if ($old && !empty($_SESSION['diff_inline_highlight'])) {
// @TODO: This is a bad hack that should instead be a patch against the node module.
menu_set_active_item("node/{$node->nid}");
module_load_include('php', 'diff', 'DiffEngine');
$new = drupal_clone($node);
// We could use a node_load() / node_prepare() combo here but for now
// we would rather save queries...
$old = db_fetch_object(db_query("SELECT body, format FROM {node_revisions} WHERE nid = %d AND vid = %d", $node->nid, $old));
$old->body = check_markup($old->body, $old->format, FALSE);
$new = preg_split('/(<[^>]+?>)/', $new->body, -1, PREG_SPLIT_DELIM_CAPTURE);
$old = preg_split('/(<[^>]+?>)/', $old->body, -1, PREG_SPLIT_DELIM_CAPTURE);
$diff = new Diff($old, $new);
// Assemble highlighted output
$output = '';
foreach ($diff->edits as $chunk) {
switch ($chunk->type) {
case 'copy':
$output .= implode("", $chunk->closing);
break;
case 'add':
case 'change':
foreach ($chunk->closing as $i =>$piece) {
if (strpos($piece, '<') === 0 && substr($piece, strlen($piece) - 1) === '>') {
$output .= $piece;
}
else {
$output .= "{$piece}";
}
}
break;
default:
foreach ($chunk->orig as $i =>$piece) {
if (strpos($piece, '<') === 0 && substr($piece, strlen($piece) - 1) === '>') {
$output .= $piece;
}
else {
$output .= "{$piece}";
}
}
break;
}
}
$node->content['body']['#value'] = $output;
}
}
}
break;
}
}
/**
* Generate an overview table of older revisions of a node and provide
* an input form to select two revisions for a comparison.
*/
function diff_diffs_overview(&$node) {
$output = '';
drupal_set_title(t('Revisions for %title', array('%title' => $node->title)));
$output .= drupal_get_form('diff_node_revisions', $node);
return $output;
}
/**
* Input form to select two revisions.
*
* @param $node
* Node whose revisions are displayed for selection.
*/
function diff_node_revisions($form_state, &$node) {
global $form_values;
$form = array();
$form['nid'] = array(
'#type' => 'hidden',
'#value' => $node->nid,
);
$revision_list = node_revision_list($node);
if (count($revision_list) > REVISION_LIST_SIZE) {
// If the list of revisions is longer than the number shown on one page split the array.
$page = isset($_GET['page']) ? $_GET['page'] : '0';
$revision_chunks = array_chunk(node_revision_list($node), REVISION_LIST_SIZE);
$revisions = $revision_chunks[$page];
// Set up global pager variables as would 'pager_query' do.
// These variables are then used in the theme('pager') call later.
global $pager_page_array, $pager_total, $pager_total_items;
$pager_total_items[0] = count($revision_list);
$pager_total[0] = ceil(count($revision_list) / REVISION_LIST_SIZE);
$pager_page_array[0] = max(0, min($page, ((int)$pager_total[0]) - 1));
}
else {
$revisions = $revision_list;
}
$revert_permission = FALSE;
if ((user_access('revert revisions') || user_access('administer nodes')) && node_access('update', $node)) {
$revert_permission = TRUE;
}
$delete_permission = FALSE;
if (user_access('administer nodes')) {
$delete_permission = TRUE;
}
foreach ($revisions as $revision) {
$operations = array();
$revision_ids[$revision->vid] = '';
if ($revision->current_vid > 0) {
$form['info'][$revision->vid] = array(
'#value' => t('!date by !username', array(
'!date' => l(format_date($revision->timestamp, 'small'), "node/$node->nid"),
'!username' => theme('username', $revision)))
. (($revision->log != '') ? ''. filter_xss($revision->log) .'
' : ''),
);
}
else {
$form['info'][$revision->vid] = array(
'#value' => t('!date by !username', array(
'!date' => l(format_date($revision->timestamp, 'small'), "node/$node->nid/revisions/$revision->vid/view"),
'!username' => theme('username', $revision)))
. (($revision->log != '') ? ''. filter_xss($revision->log) .'
' : '')
);
if ($revert_permission) {
$operations[] = array('#value' => l(t('revert'), "node/$node->nid/revisions/$revision->vid/revert"));
}
if ($delete_permission) {
$operations[] = array('#value' => l(t('delete'), "node/$node->nid/revisions/$revision->vid/delete"));
}
// Set a dummy, even if the user has no permission for the other
// operations, so that we can check if the operations array is
// empty to know if the row denotes the current revision.
$operations[] = array();
}
$form['operations'][$revision->vid] = $operations;
}
$new_vid = key($revision_ids);
next($revision_ids);
$old_vid = key($revision_ids);
$form['diff']['old'] = array(
'#type' => 'radios',
'#options' => $revision_ids,
'#default_value' => $old_vid
);
$form['diff']['new'] = array(
'#type' => 'radios',
'#options' => $revision_ids,
'#default_value' => $new_vid
);
$form['submit'] = array('#type' => 'submit', '#value' => t('Show diff'));
if (count($revision_list) > REVISION_LIST_SIZE) {
$form['#suffix'] = theme('pager', NULL, REVISION_LIST_SIZE, 0);
}
return $form;
}
/**
* Theme function to display the revisions formular with means to select
* two revisions.
*/
function theme_diff_node_revisions($form) {
$output = '';
// Overview table:
$header = array(
t('Revision'),
array('data' => drupal_render($form['submit']), 'colspan' => 2),
array('data' => t('Operations'), 'colspan' => 2)
);
if (isset($form['info']) && is_array($form['info'])) {
foreach (element_children($form['info']) as $key) {
$row = array();
if (isset($form['operations'][$key][0])) {
// Note: even if the commands for revert and delete are not permitted,
// the array is not empty since we set a dummy in this case.
$row[] = drupal_render($form['info'][$key]);
$row[] = drupal_render($form['diff']['old'][$key]);
$row[] = drupal_render($form['diff']['new'][$key]);
$row[] = drupal_render($form['operations'][$key][0]);
$row[] = drupal_render($form['operations'][$key][1]);
$rows[] = $row;
}
else {
// its the current revision (no commands to revert or delete)
$row[] = array('data' => drupal_render($form['info'][$key]), 'class' => 'revision-current');
$row[] = array('data' => drupal_render($form['diff']['old'][$key]), 'class' => 'revision-current');
$row[] = array('data' => drupal_render($form['diff']['new'][$key]), 'class' => 'revision-current');
$row[] = array('data' => theme('placeholder', t('current revision')), 'class' => 'revision-current', 'colspan' => '2');
$rows[] = array(
'data' => $row,
'class' => 'error',
);
}
}
}
$output .= theme('table', $header, $rows);
$output .= drupal_render($form);
return $output;
}
/**
* Submit code for input form to select two revisions.
*/
function diff_node_revisions_submit($form, &$form_state) {
// the ids are ordered so the old revision is always on the left
$old_vid = min($form_state['values']['old'], $form_state['values']['new']);
$new_vid = max($form_state['values']['old'], $form_state['values']['new']);
$form_state['redirect'] = 'node/'. $form_state['values']['nid'] .'/revisions/view/'. $old_vid .'/'. $new_vid;
}
/**
* Validation for input form to select two revisions.
*/
function diff_node_revisions_validate($form, &$form_state) {
$old_vid = $form_state['values']['old'];
$new_vid = $form_state['values']['new'];
if ($old_vid==$new_vid || !$old_vid || !$new_vid) {
form_set_error('diff', t('Select different revisions to compare.'));
}
}
/**
* Create output string for a comparison of 'node' between
* versions 'old_vid' and 'new_vid'.
*
* @param $node
* Node on which to perform comparison
* @param $old_vid
* Version ID of the old revision.
* @param $new_vid
* Version ID of the new revision.
*/
function diff_diffs_show(&$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)));
$node_revisions = node_revision_list($node);
$old_node = node_load($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 = $old_node->log != '' ? ''. filter_xss($old_node->log) .'
' : '';
$new_log = $new_node->log != '' ? ''. filter_xss($new_node->log) .'
' : '';
// 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 .= ''. t('Current revision:') .'
';
}
else {
$output .= ''. t('Revision of !new_date:', array('!new_date' => format_date($new_node->revision_timestamp))) .'
';
}
// Don't include node links (final argument) when viewing the diff.
$output .= node_view($new_node, FALSE, FALSE, FALSE);
return $output;
}
/**
* Creates an array of rows which represent a diff between $old_node and $new_node.
* The rows can be used via theme('diff_table') to be displayed.
*
* @param $old_node
* Node for comparison which will be displayed on the left side.
* @param $new_node
* Node for comparison which will be displayed on the right side.
*/
function _diff_body_rows(&$old_node, &$new_node) {
drupal_add_css(drupal_get_path('module', 'diff') .'/diff.css', 'module', 'all', FALSE);
module_load_include('php', 'diff', 'DiffEngine');
module_load_include('inc', 'diff', 'node');
if (module_exists('taxonomy')) {
module_load_include('inc', 'diff', 'taxonomy');
}
if (module_exists('upload')) {
module_load_include('inc', 'diff', 'upload');
}
$rows = array();
$any_visible_change = FALSE;
$node_diffs = module_invoke_all('diff', $old_node, $new_node);
// We start off assuming all form elements are in the correct order.
$node_diffs['#sorted'] = TRUE;
// Recurse through all child elements.
$count = 0;
foreach (element_children($node_diffs) as $key) {
// Assign a decimal placeholder weight to preserve original array order.
if (!isset($node_diffs[$key]['#weight'])) {
$node_diffs[$key]['#weight'] = $count/1000;
}
else {
// If one of the child elements has a weight then we will need to sort
// later.
unset($node_diffs['#sorted']);
}
$count++;
}
// One of the children has a #weight.
if (!isset($node_diffs['#sorted'])) {
uasort($node_diffs, "element_sort");
}
foreach ($node_diffs as $node_diff) {
$diff = new Diff($node_diff['#old'], $node_diff['#new']);
$formatter = new DrupalDiffFormatter();
if (isset($node_diff['#format'])) {
$formatter->show_header = $node_diff['#format']['show_header'];
}
$diff_rows = $formatter->format($diff);
if (count($diff_rows)) {
$rows[] = array(
array(
'data' => t('Changes to %name', array('%name' => $node_diff['#name'])),
'class' => 'diff-section-title',
'colspan' => 4
)
);
$rows = array_merge($rows, $diff_rows);
$any_visible_change = TRUE;
}
}
if (!$any_visible_change) {
$rows[] = array(
array(
'data' => t('No visible changes'),
'class' => 'diff-section-title',
'colspan' => 4
),
);
// Needed to keep safari happy
$rows[] = array(
array('data' => ''),
array('data' => ''),
array('data' => ''),
array('data' => ''),
);
}
return $rows;
}
/**
* Get the entry in the revisions list after $vid.
* Returns FALSE if $vid is the last entry.
*
* @param $node_revisions
* Array of node revision IDs in descending order.
* @param $vid
* Version ID to look for.
*/
function _diff_get_next_vid(&$node_revisions, $vid) {
$previous = NULL;
foreach ($node_revisions as $revision) {
if ($revision->vid == $vid) {
return ($previous ? $previous->vid : FALSE);
}
$previous = $revision;
}
return FALSE;
}
/**
* Get the entry in the revision list before $vid.
* Returns FALSE if $vid is the first entry.
*
* @param $node_revisions
* Array of node revision IDs in descending order.
* @param $vid
* Version ID to look for.
*/
function _diff_get_previous_vid(&$node_revisions, $vid) {
$previous = NULL;
foreach ($node_revisions as $revision) {
if ($previous && $previous->vid == $vid) {
return $revision->vid;
}
$previous = $revision;
}
return FALSE;
}
/**
* Implementation of hook_form_alter().
*/
function diff_form_alter(&$form, $form_state, $form_id) {
if (isset($form['type']['#value']) && $form['type']['#value'] .'_node_form' == $form_id) {
// Add a 'Preview changes' button on the node edit form.
if (variable_get('show_preview_changes_'. $form['type']['#value'], TRUE) && $form['nid']['#value'] > 0) {
$form['buttons']['preview_changes'] = array(
'#type' => 'submit',
'#value' => t('Preview changes'),
'#weight' => 12,
'#submit' => array('diff_node_form_build_preview_changes')
);
}
}
elseif ($form_id == 'node_type_form' && isset($form['identity']['type'])) {
// Node type edit form.
// Add checkbox to activate 'Preview changes' button per node type.
$form['workflow']['show_preview_changes'] = array(
'#type' => 'checkbox',
'#title' => t('Show %preview_changes button on node edit form', array('%preview_changes' => t('Preview changes'))),
'#prefix' => ''. t('Preview changes') .'',
'#weight' => 10,
'#default_value' => variable_get('show_preview_changes_'. $form['#node_type']->type, TRUE),
);
// Add checkbox to present inline diff forms and highlighting to users.
$form['workflow']['show_diff_inline'] = array(
'#type' => 'checkbox',
'#title' => t('Show diffs inline for this content type'),
'#weight' => 10,
'#prefix' => "". t('Inline diffs') ."",
'#default_value' => variable_get('show_diff_inline_'. $form['#node_type']->type, FALSE),
);
}
}
/**
* Callback if 'Preview changes' is pressed.
*/
function diff_node_form_build_preview_changes($form, &$form_state) {
$node = node_form_submit_build_node($form, $form_state);
// Create diff of old node and edited node
$rows = _diff_body_rows(node_load($form_state['values']['nid']), $node);
$cols = _diff_default_cols();
$header = _diff_default_header();
$changes = theme('diff_table', $header, $rows, array('class' => 'diff'), NULL, $cols);
// Prepend diff to edit form
$form_state['node_preview'] = isset($form_state['node_preview']) ? $changes . $form_state['node_preview'] : $changes;
}
/**
* Theme functions
*/
/**
* Return a themed table. This is a modified version of theme_table, adding
* colgroup tag and col tag options.
*
* @param $header
* An array containing the table headers. Each element of the array can be
* either a localized string or an associative array with the following keys:
* - "data": The localized title of the table column.
* - "field": The database field represented in the table column (required if
* user is to be able to sort on this column).
* - "sort": A default sort order for this column ("asc" or "desc").
* - Any HTML attributes, such as "colspan", to apply to the column header cell.
* @param $rows
* An array of table rows. Every row is an array of cells, or an associative
* array with the following keys:
* - "data": an array of cells
* - Any HTML attributes, such as "class", to apply to the table row.
*
* Each cell can be either a string or an associative array with the following keys:
* - "data": The string to display in the table cell.
* - "header": Indicates this cell is a header.
* - Any HTML attributes, such as "colspan", to apply to the table cell.
*
* Here's an example for $rows:
* @verbatim
* $rows = array(
* // Simple row
* array(
* 'Cell 1', 'Cell 2', 'Cell 3'
* ),
* // Row with attributes on the row and some of its cells.
* array(
* 'data' => array('Cell 1', array('data' => 'Cell 2', 'colspan' => 2)), 'class' => 'funky'
* )
* );
* @endverbatim
*
* @param $attributes
* An array of HTML attributes to apply to the table tag.
* @param $caption
* A localized string to use for the tag.
* @param $cols
* An array of table colum groups. Every column group is an array of columns,
* or an associative array with the following keys:
* - "data": an array of cells
* - Any HTML attributes, such as "class", to apply to the table column group.
*
* Each column can be either an empty array or associative array with the following keys:
* - Any HTML attributes, such as "class", to apply to the table column group.
*
* Here's an example for $cols:
* @verbatim
* $cols = array(
* // Simple colgroup.
* array(),
* // Simple colgroup with attributes.
* array(
* 'data' => array(), 'colspan' => 2, 'style' => 'color: green;',
* ),
* // Simple colgroup with one col.
* array(
* array(),
* ),
* // Colgroup with attributes on the colgroup and some of its cols.
* array(
* 'data' => array(array('class' => 'diff-marker'), array('colspan' => 2)), 'class' => 'funky',
* ),
* );
* @endverbatim
*
* The HTML will look as follows:
* @verbatim
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
* ...
*
* @endverbatim
*
* @return
* An HTML string representing the table.
*/
function theme_diff_table($header, $rows, $attributes = array(), $caption = NULL, $cols = array()) {
$output = '\n";
if (isset($caption)) {
$output .= ''. $caption ."\n";
}
// Format the table columns:
if (count($cols)) {
foreach ($cols as $number => $col) {
$attributes = array();
// Check if we're dealing with a simple or complex column
if (isset($col['data'])) {
foreach ($col as $key => $value) {
if ($key == 'data') {
$cells = $value;
}
else {
$attributes[$key] = $value;
}
}
}
else {
$cells = $col;
}
// Build colgroup
if (is_array($cells) && count($cells)) {
$output .= ' ';
$i = 0;
foreach ($cells as $cell) {
$output .= ' ';
}
$output .= " \n";
}
else {
$output .= ' \n";
}
}
}
// Format the table header:
if (count($header)) {
$ts = tablesort_init($header);
$output .= ' ';
foreach ($header as $cell) {
$cell = tablesort_header($cell, $header, $ts);
$output .= _theme_table_cell($cell, TRUE);
}
$output .= "
\n";
}
// Format the table rows:
$output .= "\n";
if (count($rows)) {
$flip = array('even' => 'odd', 'odd' => 'even');
$class = 'even';
foreach ($rows as $number => $row) {
$attributes = array();
// Check if we're dealing with a simple or complex row
if (isset($row['data'])) {
foreach ($row as $key => $value) {
if ($key == 'data') {
$cells = $value;
}
else {
$attributes[$key] = $value;
}
}
}
else {
$cells = $row;
}
// Add odd/even class
$class = $flip[$class];
if (isset($attributes['class'])) {
$attributes['class'] .= ' '. $class;
}
else {
$attributes['class'] = $class;
}
// Build row
$output .= ' ';
$i = 0;
foreach ($cells as $cell) {
$cell = tablesort_cell($cell, $header, $ts, $i++);
$output .= _theme_table_cell($cell);
}
$output .= " \n";
}
}
$output .= "\n";
return $output;
}
/**
* Theme function for a header line in the diff.
*/
function theme_diff_header_line($lineno) {
return ''. t('Line %lineno', array('%lineno' => $lineno)) .'';
}
/**
* Theme function for a content line in the diff.
*/
function theme_diff_content_line($line) {
return ''. $line .'
';
}
/**
* Theme function for an empty line in the diff.
*/
function theme_diff_empty_line($line) {
return $line;
}
/**
* Implementation of hook_theme().
*/
function diff_theme() {
return array(
'diff_node_revisions' => array(
'arguments' => array('form' => NULL),
),
'diff_table' => array(
'arguments' => array('header' => NULL, 'rows' => NULL, 'attributes' => array(), 'caption' => NULL, 'cols' => array()),
),
'diff_header_line' => array(
'arguments' => array('lineno' => NULL),
),
'diff_content_line' => array(
'arguments' => array('line' => NULL),
),
'diff_empty_line' => array(
'arguments' => array('line' => NULL),
),
'diff_inline_form' => array(
'arguments' => array('form' => NULL),
),
);
}
/**
* Helper function to create default 'cols' array for diff table.
*/
function _diff_default_cols() {
return array(
array(
array(
'class' => 'diff-marker',
),
array(
'class' => 'diff-content',
),
array(
'class' => 'diff-marker',
),
array(
'class' => 'diff-content',
),
),
);
}
/**
* Helper function to create default 'header' array for diff table.
*/
function _diff_default_header($old_header = '', $new_header = '') {
return array(
array(
'data' => $old_header,
'colspan' => 2
),
array(
'data' => $new_header,
'colspan' => 2
)
);
}