function showDiff(&$request)
{
$pagename = $request->getArg('pagename');
if (is_array($versions = $request->getArg('versions'))) {
// Version selection from pageinfo.php display:
rsort($versions);
list($version, $previous) = $versions;
} else {
$version = $request->getArg('version');
$previous = $request->getArg('previous');
}
// abort if page doesn't exist
$dbi = $request->getDbh();
$page = $request->getPage();
$current = $page->getCurrentRevision(false);
if ($current->getVersion() < 1) {
$html = HTML::div(array('class' => 'wikitext', 'id' => 'difftext'), HTML::p(fmt("I'm sorry, there is no such page as %s.", WikiLink($pagename, 'unknown'))));
require_once 'lib/Template.php';
GeneratePage($html, sprintf(_("Diff: %s"), $pagename), false);
return;
//early return
}
if ($version) {
if (!($new = $page->getRevision($version))) {
NoSuchRevision($request, $page, $version);
}
$new_version = fmt("version %d", $version);
} else {
$new = $current;
$new_version = _("current version");
}
if (preg_match('/^\\d+$/', $previous)) {
if (!($old = $page->getRevision($previous))) {
NoSuchRevision($request, $page, $previous);
}
$old_version = fmt("version %d", $previous);
$others = array('major', 'minor', 'author');
} else {
switch ($previous) {
case 'author':
$old = $new;
while ($old = $page->getRevisionBefore($old)) {
if ($old->get('author') != $new->get('author')) {
break;
}
}
$old_version = _("revision by previous author");
$others = array('major', 'minor');
break;
case 'minor':
$previous = 'minor';
$old = $page->getRevisionBefore($new);
$old_version = _("previous revision");
$others = array('major', 'author');
break;
case 'major':
default:
$old = $new;
while ($old && $old->get('is_minor_edit')) {
$old = $page->getRevisionBefore($old);
}
if ($old) {
$old = $page->getRevisionBefore($old);
}
$old_version = _("predecessor to the previous major change");
$others = array('minor', 'author');
break;
}
}
$new_link = WikiLink($new, '', $new_version);
$old_link = $old ? WikiLink($old, '', $old_version) : $old_version;
$page_link = WikiLink($page);
$html = HTML::div(array('class' => 'wikitext', 'id' => 'difftext'), HTML::p(fmt("Differences between %s and %s of %s.", $new_link, $old_link, $page_link)));
$otherdiffs = HTML::p(_("Other diffs:"));
$label = array('major' => _("Previous Major Revision"), 'minor' => _("Previous Revision"), 'author' => _("Previous Author"));
foreach ($others as $other) {
$args = array('action' => 'diff', 'previous' => $other);
if ($version) {
$args['version'] = $version;
}
if (count($otherdiffs->getContent()) > 1) {
$otherdiffs->pushContent(", ");
} else {
$otherdiffs->pushContent(" ");
}
$otherdiffs->pushContent(Button($args, $label[$other]));
}
$html->pushContent($otherdiffs);
if ($old and $old->getVersion() == 0) {
$old = false;
}
$html->pushContent(HTML::Table(PageInfoRow(_("Newer page:"), $new, $request, empty($version)), PageInfoRow(_("Older page:"), $old, $request, false)));
if ($new && $old) {
$diff = new Diff($old->getContent(), $new->getContent());
if ($diff->isEmpty()) {
$html->pushContent(HTML::hr(), HTML::p(_("Content of versions "), $old->getVersion(), _(" and "), $new->getVersion(), _(" is identical.")));
// If two consecutive versions have the same content, it is because the page was
// renamed, or metadata changed: ACL, owner, markup.
// We give the reason by printing the summary.
if ($new->getVersion() - $old->getVersion() == 1) {
$html->pushContent(HTML::p(_("Version "), $new->getVersion(), _(" was created because: "), $new->get('summary')));
}
} else {
$fmt = new HtmlUnifiedDiffFormatter();
$html->pushContent($fmt->format($diff));
}
$html->pushContent(HTML::hr(), HTML::h2($new_version));
require_once "lib/BlockParser.php";
$html->pushContent(TransformText($new, $new->get('markup'), $pagename));
}
require_once 'lib/Template.php';
GeneratePage($html, sprintf(_("Diff: %s"), $pagename), $new);
}
function showDiff(&$request)
{
$pagename = $request->getArg('pagename');
if (is_array($versions = $request->getArg('versions'))) {
// Version selection from pageinfo.php display:
rsort($versions);
list($version, $previous) = $versions;
} else {
$version = $request->getArg('version');
$previous = $request->getArg('previous');
}
// abort if page doesn't exist
$dbi = $request->getDbh();
$page = $request->getPage();
$current = $page->getCurrentRevision();
if ($current->getVersion() < 1) {
$html = HTML::div(array('id' => 'content'), HTML::p(fmt("I'm sorry, there is no such page as %s.", WikiLink($pagename, 'unknown'))));
include_once 'lib/Template.php';
GeneratePage($html, sprintf(_("Diff: %s"), $pagename), false);
return;
//early return
}
if ($version) {
if (!($new = $page->getRevision($version))) {
NoSuchRevision($request, $page, $version);
}
$new_version = fmt("version %d", $version);
} else {
$new = $current;
$new_version = _("current version");
}
if (preg_match('/^\\d+$/', $previous)) {
if (!($old = $page->getRevision($previous))) {
NoSuchRevision($request, $page, $previous);
}
$old_version = fmt("version %d", $previous);
$others = array('major', 'minor', 'author');
} else {
switch ($previous) {
case 'author':
$old = $new;
while ($old = $page->getRevisionBefore($old)) {
if ($old->get('author') != $new->get('author')) {
break;
}
}
$old_version = _("revision by previous author");
$others = array('major', 'minor');
break;
case 'minor':
$previous = 'minor';
$old = $page->getRevisionBefore($new);
$old_version = _("previous revision");
$others = array('major', 'author');
break;
case 'major':
default:
$old = $new;
while ($old && $old->get('is_minor_edit')) {
$old = $page->getRevisionBefore($old);
}
if ($old) {
$old = $page->getRevisionBefore($old);
}
$old_version = _("predecessor to the previous major change");
$others = array('minor', 'author');
break;
}
}
$new_link = WikiLink($new, '', $new_version);
$old_link = $old ? WikiLink($old, '', $old_version) : $old_version;
$page_link = WikiLink($page);
$html = HTML::div(array('id' => 'content'), HTML::p(fmt("Differences between %s and %s of %s.", $new_link, $old_link, $page_link)));
$otherdiffs = HTML::p(_("Other diffs:"));
$label = array('major' => _("Previous Major Revision"), 'minor' => _("Previous Revision"), 'author' => _("Previous Author"));
foreach ($others as $other) {
$args = array('action' => 'diff', 'previous' => $other);
if ($version) {
$args['version'] = $version;
}
if (count($otherdiffs->getContent()) > 1) {
$otherdiffs->pushContent(", ");
} else {
$otherdiffs->pushContent(" ");
}
$otherdiffs->pushContent(Button($args, $label[$other]));
}
$html->pushContent($otherdiffs);
if ($old and $old->getVersion() == 0) {
$old = false;
}
$html->pushContent(HTML::Table(PageInfoRow(_("Newer page:"), $new, $request, empty($version)), PageInfoRow(_("Older page:"), $old, $request, false)));
if ($new && $old) {
$diff = new Diff($old->getContent(), $new->getContent());
if ($diff->isEmpty()) {
$html->pushContent(HTML::hr(), HTML::p('[', _("Versions are identical"), ']'));
} else {
// New CSS formatted unified diffs (ugly in NS4).
$fmt = new HtmlUnifiedDiffFormatter();
// Use this for old table-formatted diffs.
//$fmt = new TableUnifiedDiffFormatter;
$html->pushContent($fmt->format($diff));
}
}
include_once 'lib/Template.php';
GeneratePage($html, sprintf(_("Diff: %s"), $pagename), $new);
}
