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-rw-r--r--maintenance/7zip.inc69
1 files changed, 69 insertions, 0 deletions
diff --git a/maintenance/7zip.inc b/maintenance/7zip.inc
new file mode 100644
index 00000000..617083bf
--- /dev/null
+++ b/maintenance/7zip.inc
@@ -0,0 +1,69 @@
+<?php
+/**
+ * Stream wrapper around 7za filter program.
+ * Required since we can't pass an open file resource to XMLReader->open()
+ * which is used for the text prefetch.
+ *
+ * @ingroup Maintenance
+ */
+class SevenZipStream {
+ var $stream;
+
+ private function stripPath( $path ) {
+ $prefix = 'mediawiki.compress.7z://';
+ return substr( $path, strlen( $prefix ) );
+ }
+
+ function stream_open( $path, $mode, $options, &$opened_path ) {
+ if( $mode[0] == 'r' ) {
+ $options = 'e -bd -so';
+ } elseif( $mode[0] == 'w' ) {
+ $options = 'a -bd -si';
+ } else {
+ return false;
+ }
+ $arg = wfEscapeShellArg( $this->stripPath( $path ) );
+ $command = "7za $options $arg";
+ if( !wfIsWindows() ) {
+ // Suppress the stupid messages on stderr
+ $command .= ' 2>/dev/null';
+ }
+ $this->stream = popen( $command, $mode );
+ return ($this->stream !== false);
+ }
+
+ function url_stat( $path, $flags ) {
+ return stat( $this->stripPath( $path ) );
+ }
+
+ // This is all so lame; there should be a default class we can extend
+
+ function stream_close() {
+ return fclose( $this->stream );
+ }
+
+ function stream_flush() {
+ return fflush( $this->stream );
+ }
+
+ function stream_read( $count ) {
+ return fread( $this->stream, $count );
+ }
+
+ function stream_write( $data ) {
+ return fwrite( $this->stream, $data );
+ }
+
+ function stream_tell() {
+ return ftell( $this->stream );
+ }
+
+ function stream_eof() {
+ return feof( $this->stream );
+ }
+
+ function stream_seek( $offset, $whence ) {
+ return fseek( $this->stream, $offset, $whence );
+ }
+}
+stream_wrapper_register( 'mediawiki.compress.7z', 'SevenZipStream' ); \ No newline at end of file