Implement userspace wrapper support for unlink method

main/streams/userspace.c

@@ -33,6 +33,7 @@ struct php_user_stream_wrapper {
 
 static php_stream *user_wrapper_opener(php_stream_wrapper *wrapper, char *filename, char *mode, int options, char **opened_path, php_stream_context *context STREAMS_DC TSRMLS_DC);
 static int user_wrapper_stat_url(php_stream_wrapper *wrapper, char *url, php_stream_statbuf *ssb TSRMLS_DC);
+static int user_wrapper_unlink(php_stream_wrapper *wrapper, char *url, int options, php_stream_context *context TSRMLS_DC);
 static php_stream *user_wrapper_opendir(php_stream_wrapper *wrapper, char *filename, char *mode,
 		int options, char **opened_path, php_stream_context *context STREAMS_DC TSRMLS_DC);
 
@@ -43,7 +44,7 @@ static php_stream_wrapper_ops user_stream_wops = {
 	user_wrapper_stat_url,
 	user_wrapper_opendir,
 	"user-space",
-	NULL /* unlink */
+	user_wrapper_unlink
 };
 
 
@@ -90,6 +91,7 @@ typedef struct _php_userstream_data php_userstream_data_t;
 #define USERSTREAM_EOF		"stream_eof"
 #define USERSTREAM_STAT		"stream_stat"
 #define USERSTREAM_STATURL	"url_stat"
+#define USERSTREAM_UNLINK	"unlink"
 #define USERSTREAM_DIR_OPEN		"dir_opendir"
 #define USERSTREAM_DIR_READ		"dir_readdir"
 #define USERSTREAM_DIR_REWIND	"dir_rewinddir"
@@ -148,6 +150,11 @@ typedef struct _php_userstream_data php_userstream_data_t;
 		return array( just like that returned by stat() );
 	}
 
+	function unlink(string $url)
+	{
+		return true / false;
+	}
+
 	function dir_opendir(string $url, int $options)
 	{
 		return true / false;
@@ -698,6 +705,53 @@ static int php_userstreamop_stat(php_stream *stream, php_stream_statbuf *ssb TSR
 	return ret;
 }
 
+static int user_wrapper_unlink(php_stream_wrapper *wrapper, char *url, int options, php_stream_context *context TSRMLS_DC)
+{
+	struct php_user_stream_wrapper *uwrap = (struct php_user_stream_wrapper*)wrapper->abstract;
+	zval *zfilename, *zfuncname, *zretval;
+	zval **args[1];
+	int call_result;
+	zval *object;
+	int ret = 0;
+
+	/* create an instance of our class */
+	ALLOC_ZVAL(object);
+	object_init_ex(object, uwrap->ce);
+	ZVAL_REFCOUNT(object) = 1;
+	PZVAL_IS_REF(object) = 1;
+
+	/* call the unlink method */
+	MAKE_STD_ZVAL(zfilename);
+	ZVAL_STRING(zfilename, url, 1);
+	args[0] = &zfilename;
+
+	MAKE_STD_ZVAL(zfuncname);
+	ZVAL_STRING(zfuncname, USERSTREAM_UNLINK, 1);
+	
+	call_result = call_user_function_ex(NULL,
+			&object,
+			zfuncname,
+			&zretval,
+			1, args,
+			0, NULL	TSRMLS_CC);
+
+	if (call_result == SUCCESS && zretval && Z_TYPE_P(zretval) == IS_BOOL) {
+		ret = Z_LVAL_P(zretval);
+	} else if (call_result == FAILURE) {
+		php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s::" USERSTREAM_UNLINK " is not implemented!", uwrap->classname);
+ 	}
+
+	/* clean up */
+	zval_ptr_dtor(&object);
+	if (zretval)
+		zval_ptr_dtor(&zretval);
+	
+	zval_ptr_dtor(&zfuncname);
+	zval_ptr_dtor(&zfilename);
+
+	return ret;
+}
+
 static int user_wrapper_stat_url(php_stream_wrapper *wrapper, char *url, php_stream_statbuf *ssb TSRMLS_DC)
 {
 	struct php_user_stream_wrapper *uwrap = (struct php_user_stream_wrapper*)wrapper->abstract;