Allow file rename action for GitHub and Bitbucket

To avoid a schema change introducing a new field for the old filename,
we store both the old and new name in the existing field, separated by
a delimiter ' → ' (defined as constant in SourceFile class).

To ensure we generate valid URLs as target for the Diff and File buttons
we also introduce a new SourceFile::getFilename() method, which is used
in the url_diff() and url_file() methods to split the value and return
the actual filename to use (i.e. the new one).

Fixes #374

Source/Source.API.php

@@ -1309,6 +1309,11 @@ class SourceFile {
 	const BINARY = 'bin';
 	const NA = 'n/a';
 
+	/**
+	 * String used to separate old and new filename in RENAMED operations.
+	 */
+	const RENAMED_SEPARATOR = ' → ';
+
 	var $id;
 	var $change_id;
 	var $revision;
@@ -1323,6 +1328,23 @@ function __construct( $p_change_id, $p_revision, $p_filename, $p_action='' ) {
 		$this->filename		= $p_filename;
 	}
 
+	/**
+	 * Return the File's name.
+	 *
+	 * In rename operations, filename is stored as 'old → new' so we need to
+	 * conditionally split the string and return only the new filename to
+	 * avoid problems when it's used e.g. in URLs.
+	 *
+	 * @return string
+	 */
+	public function getFilename() {
+		if ($this->action == SourceFile::RENAMED) {
+			$t_split = explode(SourceFile::RENAMED_SEPARATOR, $this->filename);
+			return isset( $t_split[1] ) ? $t_split[1] : $t_split[0];
+		}
+		return $this->filename;
+	}
+
 	function save() {
 		if ( 0 == $this->change_id ) {
 			error_parameters( $this->id );

SourceBitBucket/SourceBitBucket.php

@@ -38,7 +38,8 @@ public function show_changeset( $p_repo, $p_changeset ) {
 	}
 
 	public function show_file( $p_repo, $p_changeset, $p_file ) {
-		return "$p_file->action - $p_file->filename";
+		$t_filename = $p_file->getFilename();
+		return "$p_file->action - $t_filename";
 	}
 
 	public function url_repo( $p_repo, $p_changeset = null ) {
@@ -67,7 +68,7 @@ public function url_file( $p_repo, $p_changeset, $p_file ) {
 		}
 
 		$t_ref      = $p_changeset->revision;
-		$t_filename = $p_file->filename;
+		$t_filename = $p_file->getFilename();
 		return $this->main_url . "$t_username/$t_reponame/src/$t_ref/$t_filename";
 	}
 
@@ -78,7 +79,7 @@ public function url_diff( $p_repo, $p_changeset, $p_file ) {
 		}
 
 		$t_ref      = $p_changeset->revision;
-		$t_filename = $p_file->filename;
+		$t_filename = $p_file->getFilename();
 		return $this->main_url . "$t_username/$t_reponame/diff/$t_filename?diff2=$t_ref";
 	}
 
@@ -439,6 +440,10 @@ private function json_commit_changeset( $p_repo, $p_json, $p_branch = '' ) {
 							$t_action = SourceFile::DELETED;
 							$t_filename = $t_file->old->path;
 							break;
+						case 'renamed':
+							$t_action = SourceFile::RENAMED;
+							$t_filename = $t_file->old->path . SourceFile::RENAMED_SEPARATOR . $t_file->new->path;
+							break;
 						default:
 							$t_action = SourceFile::UNKNOWN . ' ' . $t_file->status;
 					}

SourceGithub/SourceGithub.php

@@ -248,9 +248,9 @@ public function url_file( $p_repo, $p_changeset, $p_file ) {
 		$t_username = $p_repo->info['hub_username'];
 		$t_reponame = $p_repo->info['hub_reponame'];
 		$t_ref = $p_changeset->revision;
-		$t_filename = $p_file->filename;
+		$t_filename = $p_file->getFilename();
 
-		return "https://github.com/$t_username/$t_reponame/tree/$t_ref/$t_filename";
+		return "https://github.com/$t_username/$t_reponame/blob/$t_ref/$t_filename";
 	}
 
 	public function url_diff( $p_repo, $p_changeset, $p_file ) {
@@ -799,6 +799,10 @@ private function json_commit_changeset( $p_repo, $p_json, $p_branch='' ) {
 						case 'removed':
 							$t_action = SourceFile::DELETED;
 							break;
+						case 'renamed':
+							$t_action = SourceFile::RENAMED;
+							$t_filename = $t_file->previous_filename . SourceFile::RENAMED_SEPARATOR . $t_file->filename;
+							break;
 						default:
 							$t_action = SourceFile::UNKNOWN . ' ' . $t_file->status;
 					}