From 23dccd1af2df6ed8f2954151a081263a45da3b61 Mon Sep 17 00:00:00 2001
From: Glenn Maynard <gmaynard@users.sourceforge.net>
Date: Sat, 19 Feb 2005 07:50:00 +0000
Subject: [PATCH] GzipString, GunzipString

---
 stepmania/src/RageFileDriverDeflate.cpp | 38 +++++++++++++++++++++++++
 stepmania/src/RageFileDriverDeflate.h   |  4 +++
 2 files changed, 42 insertions(+)

diff --git a/stepmania/src/RageFileDriverDeflate.cpp b/stepmania/src/RageFileDriverDeflate.cpp
index bbf66907c0..c2fa386cb2 100644
--- a/stepmania/src/RageFileDriverDeflate.cpp
+++ b/stepmania/src/RageFileDriverDeflate.cpp
@@ -487,6 +487,44 @@ int RageFileObjGzip::Finish()
 	return this->Flush();
 }
 
+#include "RageFileDriverMemory.h"
+
+void GzipString( const CString &sIn, CString &sOut )
+{
+	/* Gzip it. */
+	RageFileObjMem mem;
+	RageFileObjGzip gzip( &mem );
+	gzip.Start();
+	gzip.Write( sIn );
+	gzip.Finish();
+
+	sOut = mem.GetString();
+}
+
+bool GunzipString( const CString &sIn, CString &sOut )
+{
+	RageFileObjMem mem;
+	mem.PutString( sIn );
+
+	CString sError;
+	uint32_t iCRC32;
+	RageFileBasic *pFile = GunzipFile( mem, sError, &iCRC32 );
+	if( pFile == NULL )
+		return false;
+
+	pFile->Read( sOut );
+
+	/* Check the CRC. */
+	unsigned iRet;
+	ASSERT( pFile->GetCRC32( &iRet ) );
+	SAFE_DELETE( pFile );
+
+	if( iRet != iCRC32 )
+		return false;
+
+	return true;
+}
+
 /*
  * Copyright (c) 2003-2004 Glenn Maynard
  * All rights reserved.
diff --git a/stepmania/src/RageFileDriverDeflate.h b/stepmania/src/RageFileDriverDeflate.h
index 059493f484..44fc3ca156 100644
--- a/stepmania/src/RageFileDriverDeflate.h
+++ b/stepmania/src/RageFileDriverDeflate.h
@@ -68,6 +68,10 @@ private:
 
 RageFileBasic *GunzipFile( RageFileBasic &file, CString &sError, uint32_t *iCRC32 );
 
+/* Quick helpers: */
+void GzipString( const CString &sIn, CString &sOut );
+bool GunzipString( const CString &sIn, CString &sOut ); // returns false on CRC, etc. error
+
 #endif
 
 /*