fix: properly free Parser and Result (#6)

Fix #5.

Author: bfabio

go-src/publiccode-parser-wrapper.go

@@ -172,6 +172,14 @@ func FreeResult(result *C.struct_ParseResult) {
 		result.WarningCount = 0
 	}
 
+	C.free(unsafe.Pointer(result))
+
+}
+
+//export FreeParser
+func FreeParser(handle C.ParserHandle) {
+	h := cgo.Handle(handle)
+	h.Delete()
 }
 
 func toGoParser(handle C.ParserHandle) (*publiccode.Parser, error) {

lib/libpubliccode-parser.h

@@ -101,6 +101,7 @@ extern "C" {
 extern ParserHandle NewParser(_Bool disableNetwork, char* branch, char* baseURL);
 extern struct ParseResult* ParseString(ParserHandle handle, char* content);
 extern void FreeResult(struct ParseResult* result);
+extern void FreeParser(ParserHandle handle);
 
 #ifdef __cplusplus
 }

lib/libpubliccode-parser.so

@@ -31,6 +31,15 @@ public function __construct(?ParserConfig $config = null)
         }
     }
 
+    public function __destruct()
+    {
+        if ($this->handle != 0) {
+            /** @phpstan-ignore-next-line */
+            $this->ffi->FreeParser($this->handle);
+            $this->handle = 0;
+        }
+    }
+
     /**
      * Parse publiccode.yml content
      *
@@ -127,6 +136,7 @@ private function getFFI(): FFI
 	ParserHandle NewParser(bool disableNetwork, const char* branch, const char* baseURL);
 	ParseResult* ParseString(ParserHandle handle, const char* content);
 	void FreeResult(ParseResult* result);
+	void FreeParser(ParserHandle handle);
 	CDEF;
 
         try {
@@ -151,11 +161,11 @@ private function findLibrary(): string
     {
         $libraryName = 'libpubliccode-parser.so';
         $possiblePaths = [
-                __DIR__ . '/',
-                __DIR__ . '/../lib/',
-                __DIR__ . '/../vendor/lib/',
-                '/usr/local/lib/',
-                '/usr/lib/',
+            __DIR__ . '/',
+            __DIR__ . '/../lib/',
+            __DIR__ . '/../vendor/lib/',
+            '/usr/local/lib/',
+            '/usr/lib/',
         ];
 
         foreach ($possiblePaths as $path) {