Correct the URLs for github and gitlab

Previously, these functions assumed the commit was in the ports tree. Now they
use the incoming $path variable. This value is taken from the FreshPorts
database and reflect the location with the source tree as stored in FreshPorts.

The code translates this value to the values used by GitHub and GitLab
respectively.

This fixes #392

include/freshports.php

@@ -114,11 +114,53 @@ function freshports_git_commit_Link_freebsd($revision, $hostname, $path) {
 }
 
 function freshports_git_commit_Link_github($revision, $hostname, $path) {
-  return '<a href="https://github.com/FreeBSD/freebsd-ports/commit/' . htmlentities($revision) .  '">' . freshports_GitHub_Icon('commit hash:' . $revision) . '</a>';
+	$url = 'https://github.com/FreeBSD/';
+
+	switch ($path) {
+		case '/ports':
+			$url .= 'freebsd-ports';
+			break;
+
+		case '/doc':
+			$url .= 'freebsd-doc';
+			break;
+
+		case '/src':
+			$url .= 'freebsd-src';
+			break;
+
+		default:
+			$url .= 'UNKOWN_PATH';
+			break;
+	}
+
+	$url .= '/commit/' . htmlentities($revision);
+	return '<a href="' . $url. '">' . freshports_GitHub_Icon('commit hash:' . $revision) . '</a>';
 }
 
 function freshports_git_commit_Link_gitlab($revision, $hostname, $path) {
-  return '<a href="https://gitlab.com/FreeBSD/freebsd-ports/-/commit/' . htmlentities($revision) .  '">' . freshports_GitLab_Icon('commit hash:' . $revision) . '</a>';
+	$url = 'https://gitlab.com/FreeBSD/';
+
+	switch ($path) {
+		case '/ports':
+			$url .= 'freebsd-ports';
+			break;
+
+		case '/doc':
+			$url .= 'freebsd-doc';
+			break;
+
+		case '/src':
+			$url .= 'freebsd-src';
+			break;
+
+		default:
+			$url .= 'UNKOWN_PATH';
+			break;
+	}
+
+	$url .= '/commit/' . htmlentities($revision);
+	return '<a href="' . $url . '">' . freshports_GitLab_Icon('commit hash:' . $revision) . '</a>';
 }
 
 function freshports_git_commit_Link_codeberg($revision, $hostname, $path) {