don't always free pFile from ~RageFileObjInflate

stepmania/src/RageFileDriverDeflate.cpp

@@ -1,6 +1,7 @@
 #include "global.h"
 #include "RageFileDriverDeflate.h"
 #include "RageLog.h"
+#include "RageUtil.h"
 
 #if defined(_WINDOWS) || defined(_XBOX)
         #include "zlib/zlib.h"
@@ -20,15 +21,14 @@
 
 RageFileObjInflate::RageFileObjInflate( RageFileBasic *pFile, int iUncompressedSize )
 {
+	m_bFileOwned = false;
 	m_pFile = pFile;
 	decomp_buf_avail = 0;
 	m_pInflate = new z_stream;
+	memset( m_pInflate, 0, sizeof(z_stream) );
 	
 	m_iUncompressedSize = iUncompressedSize;
 
-	m_pInflate->zalloc = Z_NULL;
-	m_pInflate->zfree = Z_NULL;
-
 	int err = inflateInit2( m_pInflate, -MAX_WBITS );
 	if( err == Z_MEM_ERROR )
 		RageException::Throw( "inflateInit2( %i ): out of memory", -MAX_WBITS );
@@ -48,6 +48,7 @@ RageFileObjInflate::RageFileObjInflate( const RageFileObjInflate &cpy ):
 	ASSERT( 0 );
 /*
 	m_pFile = cpy.m_pFile->Copy();
+	m_bFileOwned = true;
 	m_pInflate = new z_stream;
 	inflateCopy( m_pInflate, const_cast<z_stream*>(cpy.m_pInflate) );
 
@@ -68,7 +69,8 @@ RageFileBasic *RageFileObjInflate::Copy() const
 
 RageFileObjInflate::~RageFileObjInflate()
 {
-	delete m_pFile;
+	if( m_bFileOwned )
+		delete m_pFile;
 
 	int err = inflateEnd( m_pInflate );
 	if( err != Z_OK )

stepmania/src/RageFileDriverDeflate.h

@@ -10,7 +10,8 @@ typedef struct z_stream_s z_stream;
 class RageFileObjInflate: public RageFileObj
 {
 public:
-	/* pFile will be freed. */
+	/* By default, pFile will not be freed.  To implement GetFileSize(), the
+	 * container format must store the file size. */
 	RageFileObjInflate( RageFileBasic *pFile, int iUncompressedSize );
 	RageFileObjInflate( const RageFileObjInflate &cpy );
 	~RageFileObjInflate();
@@ -20,10 +21,13 @@ public:
 	int GetFileSize() const { return m_iUncompressedSize; }
 	RageFileBasic *Copy() const;
 
+	void DeleteFileWhenFinished() { m_bFileOwned = true; }
+
 private:
 	int m_iUncompressedSize;
 	RageFileBasic *m_pFile;
 	int m_iFilePos;
+	bool m_bFileOwned;
 
 	z_stream *m_pInflate;
 	enum { INBUFSIZE = 1024*4 };

stepmania/src/RageFileDriverZip.cpp

@@ -372,7 +372,11 @@ RageFileBasic *RageFileDriverZip::Open( const CString &path, int mode, int &err
 	case STORED:
 		return pFile;
 	case DEFLATED:
-		return new RageFileObjInflate( pFile, info->uncompr_size );
+	{
+		RageFileObjInflate *pInflate = new RageFileObjInflate( pFile, info->uncompr_size );
+		pInflate->DeleteFileWhenFinished();
+		return pInflate;
+	}
 	default:
 		/* unknown compression method */
 		ASSERT( 0 );