1 files changed, 71 insertions, 0 deletions
diff --git a/www/wiki/includes/libs/filebackend/fileop/DeleteFileOp.php b/www/wiki/includes/libs/filebackend/fileop/DeleteFileOp.php
new file mode 100644
index 00000000..01f7df46
--- /dev/null
+++ b/www/wiki/includes/libs/filebackend/fileop/DeleteFileOp.php
@@ -0,0 +1,71 @@
+<?php
+/**
+* Helper class for representing operations with transaction support.
+*
+* This program is free software; you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation; either version 2 of the License, or
+* (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License along
+* with this program; if not, write to the Free Software Foundation, Inc.,
+* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+* http://www.gnu.org/copyleft/gpl.html
+*
+* @file
+* @ingroup FileBackend
+*/
+
+/**
+ * Delete a file at the given storage path from the backend.
+ * Parameters for this operation are outlined in FileBackend::doOperations().
+ */
+class DeleteFileOp extends FileOp {
+	protected function allowedParams() {
+		return [ [ 'src' ], [ 'ignoreMissingSource' ], [ 'src' ] ];
+	}
+
+	protected function doPrecheck( array &$predicates ) {
+		$status = StatusValue::newGood();
+		// Check if the source file exists
+		if ( !$this->fileExists( $this->params['src'], $predicates ) ) {
+			if ( $this->getParam( 'ignoreMissingSource' ) ) {
+				$this->doOperation = false; // no-op
+				// Update file existence predicates (cache 404s)
+				$predicates['exists'][$this->params['src']] = false;
+				$predicates['sha1'][$this->params['src']] = false;
+
+				return $status; // nothing to do
+			} else {
+				$status->fatal( 'backend-fail-notexists', $this->params['src'] );
+
+				return $status;
+			}
+			// Check if a file can be placed/changed at the source
+		} elseif ( !$this->backend->isPathUsableInternal( $this->params['src'] ) ) {
+			$status->fatal( 'backend-fail-usable', $this->params['src'] );
+			$status->fatal( 'backend-fail-delete', $this->params['src'] );
+
+			return $status;
+		}
+		// Update file existence predicates
+		$predicates['exists'][$this->params['src']] = false;
+		$predicates['sha1'][$this->params['src']] = false;
+
+		return $status; // safe to call attempt()
+	}
+
+	protected function doAttempt() {
+		// Delete the source file
+		return $this->backend->deleteInternal( $this->setFlags( $this->params ) );
+	}
+
+	public function storagePathsChanged() {
+		return [ $this->params['src'] ];
+	}
+}