function controller_revisions($args)
{
page_canonical($args[0][0]);
$page = $args[0][0];
if (!page_exists($page)) {
hotglue_error(404);
}
// get all revisions of page and determine the current revision's index
load_modules('glue');
$a = expl('.', $page);
$revs = revisions_info(array('pagename' => $a[0], 'sort' => 'time'));
$revs = $revs['#data'];
$cur_rev = false;
for ($i = 0; $i < count($revs); $i++) {
if ($revs[$i]['revision'] == $a[1]) {
$cur_rev = $i;
break;
}
}
if ($cur_rev === false) {
// we didn't find the current revision
hotglue_error(500);
}
default_html(true);
html_add_css(base_url() . 'modules/revisions_browser/revisions_browser.css');
if (USE_MIN_FILES) {
html_add_js(base_url() . 'modules/revisions_browser/revisions_browser.min.js');
} else {
html_add_js(base_url() . 'modules/revisions_browser/revisions_browser.js');
}
html_add_js_var('$.glue.page', $page);
$bdy =& body();
elem_attr($bdy, 'id', 'revisions');
render_page(array('page' => $page, 'edit' => false));
body_append('<div id="revisions_browser_ctrl">');
body_append('<div id="revisions_browser_prev">');
if ($cur_rev + 1 < count($revs)) {
body_append('<a href="' . base_url() . '?' . htmlspecialchars(urlencode($revs[$cur_rev + 1]['page']), ENT_COMPAT, 'UTF-8') . '/revisions">prev</a>');
}
body_append('</div><div id="revisions_browser_cur">');
if (substr($revs[$cur_rev]['revision'], 0, 5) == 'auto-') {
body_append(date('d M y H:i', $revs[$cur_rev]['time']));
} else {
body_append(htmlspecialchars($revs[$cur_rev]['revision'], ENT_NOQUOTES, 'UTF-8'));
}
body_append('<br>');
if ($a[1] == 'head') {
body_append('<a href="' . base_url() . '?' . htmlspecialchars(urlencode($page), ENT_COMPAT, 'UTF-8') . '/edit">back to editing mode</a>');
} else {
body_append('<a id="revisions_browser_revert_btn" href="#">revert</a>');
}
body_append('</div><div id="revisions_browser_next">');
if (0 < $cur_rev) {
body_append('<a href="' . base_url() . '?' . htmlspecialchars(urlencode($revs[$cur_rev - 1]['page']), ENT_COMPAT, 'UTF-8') . '/revisions">next</a>');
}
body_append('</div>');
body_append('</div>');
echo html_finalize();
}
/**
* create and delete auto- revisions
*
* this function operates on a specific page and takes SNAPSHOT_MIN_AGE and
* SNAPSHOT_MAX_AGE into account.
* @param array $args arguments
* key 'page' is the page (i.e. page.rev)
* @return array response
* true if successful
*/
function check_auto_snapshot($args)
{
if (!isset($args['page'])) {
return response('Required argument "page" missing', 400);
}
if (!page_exists($args['page'])) {
return response('Page ' . quot($args['page']) . ' does not exist', 400);
}
$a = expl('.', $args['page']);
$revs = revisions_info(array('pagename' => $a[0], 'sort' => 'time'));
$revs = $revs['#data'];
if ($a[1] == 'head' && SNAPSHOT_MIN_AGE != 0) {
// we're dealing with a head revision and taking snapshots
// find the previous auto- revision
for ($i = 0; $i < count($revs); $i++) {
if (substr($revs[$i]['revision'], 0, 5) == 'auto-') {
// got it, check age
if (time() - $revs[$i]['time'] < SNAPSHOT_MIN_AGE) {
log_msg('debug', 'check_auto_snapshot: age is ' . (time() - $revs[$i]['time']) . ' seconds, not creating a snapshot');
break;
}
// check if different
if (dir_is_different(CONTENT_DIR . '/' . str_replace('.', '/', $args['page']), CONTENT_DIR . '/' . str_replace('.', '/', $revs[$i]['page']))) {
snapshot($args);
} else {
log_msg('debug', 'check_auto_snapshot: head is identical to ' . $revs[$i]['revision'] . ', not creating a snapshot');
}
break;
}
if ($i == count($revs) - 1) {
// no auto- revision?, create one now
snapshot($args);
}
}
}
// delete old auto- revisions
if (SNAPSHOT_MAX_AGE != 0) {
for ($i = count($revs) - 1; 0 <= $i; $i--) {
if (substr($revs[$i]['revision'], 0, 5) == 'auto-' && SNAPSHOT_MAX_AGE < time() - $revs[$i]['time']) {
log_msg('info', 'check_auto_snapshot: deleting an old snapshot');
delete_page(array('page' => $revs[$i]['page']));
$i--;
}
}
}
return response(true);
}
