From a1ae55577c3aed9e683a2304f5b014462c018abf Mon Sep 17 00:00:00 2001
From: River Tarnell <kateturner@users.mediawiki.org>
Date: Wed, 29 Jun 2005 00:23:42 +0000
Subject: [PATCH] * (bug 2595) Show "Earlier" and "Latest" links on history go
 to the first/last   page in the article history pager.

---
 RELEASE-NOTES            |  2 ++
 includes/PageHistory.php | 41 ++++++++++++++++++++++++++++++++++++++--
 languages/Language.php   |  2 ++
 3 files changed, 43 insertions(+), 2 deletions(-)

diff --git a/RELEASE-NOTES b/RELEASE-NOTES
index 0e07b1a310..4375dbec2c 100644
--- a/RELEASE-NOTES
+++ b/RELEASE-NOTES
@@ -411,6 +411,8 @@ Various bugfixes, small features, and a few experimental things:
 * (bug 2583) Add --missinig option on rebuildImages.php to add db entries
   for uploaded files that don't have them
 * (bug 2572) Fix edit conflict handling
+* (bug 2595) Show "Earlier" and "Latest" links on history go to the first/last
+  page in the article history pager.
 
 
 === Caveats ===
diff --git a/includes/PageHistory.php b/includes/PageHistory.php
index 830d14f399..798ab3c5db 100644
--- a/includes/PageHistory.php
+++ b/includes/PageHistory.php
@@ -37,7 +37,7 @@ class PageHistory {
 		$fname = 'PageHistory::history';
 		wfProfileIn( $fname );
 
-		$wgOut->setPageTitle( $this->mTitle->getPRefixedText() );
+		$wgOut->setPageTitle( $this->mTitle->getPrefixedText() );
 		$wgOut->setSubtitle( wfMsg( 'revhistory' ) );
 		$wgOut->setArticleFlag( false );
 		$wgOut->setArticleRelated( true );
@@ -55,6 +55,30 @@ class PageHistory {
 		$offset = $wgRequest->getText('offset');
 		if (!isset($offset) || !preg_match("/^[0-9]+$/", $offset)) $offset = 0;
 
+		if (($gowhere = $wgRequest->getText("go")) !== NULL) {
+			switch ($gowhere) {
+			case "first":
+				if (($lastid = $this->getLastOffset($id, $limit)) === NULL)
+					break;
+				$gourl = $wgTitle->getLocalURL("action=history&limit={$limit}&offset={$lastid}");
+				break;
+			default:
+				$gourl = NULL;
+			}
+
+			if (!is_null($gourl)) {
+				$wgOut->redirect($gourl);
+				return;
+			}
+		}
+
+		$firsturl = $wgTitle->escapeLocalURL("action=history&limit={$limit}&go=first");
+		$lasturl = $wgTitle->escapeLocalURL("action=history&limit={$limit}");
+		$firsttext = wfMsg("histfirst");
+		$lasttext = wfMsg("histlast");
+
+		$firstlast = "(<a href=\"$firsturl\">$firsttext</a> | <a href=\"$lasturl\">$lasttext</a>)";
+
 		/* Check one extra row to see whether we need to show 'next' and diff links */
 		$limitplus = $limit + 1;
 
@@ -127,7 +151,7 @@ class PageHistory {
 				"action=history&offset={$offset}&limit={$num}")."\">".$wgLang->formatNum($num)."</a>";
 		}
 		$bits = implode($urls, ' | ');
-		$numbar = wfMsg("viewprevnext", 
+		$numbar = "$firstlast " . wfMsg("viewprevnext", 
 				"<a href=\"$prevurl\">".wfMsg("prevn", $limit)."</a>", 
 				"<a href=\"$nexturl\">".wfMsg("nextn", $limit)."</a>", 
 				$bits);
@@ -321,6 +345,19 @@ class PageHistory {
 		}
 	}
 	
+	function getLastOffset($id, $step = 50) {
+		$db =& wfGetDB(DB_SLAVE);
+		$sql = "SELECT rev_timestamp FROM revision WHERE rev_page = $id ORDER BY rev_timestamp ASC LIMIT $step";
+		$res = $db->query($sql, "getLastOffset");
+		$n = $db->numRows($res);
+
+		if ($n == 0)
+			return NULL;
+
+		while ($n--)
+			$obj = $db->fetchObject($res);
+		return $obj->rev_timestamp;
+	}
 }
 
 ?>
diff --git a/languages/Language.php b/languages/Language.php
index 27d33446f8..045f26f867 100644
--- a/languages/Language.php
+++ b/languages/Language.php
@@ -774,6 +774,8 @@ Legend: (cur) = difference with current version,
 (last) = difference with preceding version, M = minor edit.',
 'history_copyright'    => '-',
 'deletedrev' => '[deleted]',
+'histfirst' => 'Earliest',
+'histlast' => 'Latest',
 
 # Diffs
 #
-- 
2.20.1