smsvn -> ssc-hg glue: rearrange directory structure

src/RageSurface_Load.cpp

@@ -0,0 +1,142 @@
+#include "global.h"
+#include "RageSurface_Load.h"
+#include "RageSurface_Load_PNG.h"
+#include "RageSurface_Load_JPEG.h"
+#include "RageSurface_Load_GIF.h"
+#include "RageSurface_Load_BMP.h"
+#include "RageUtil.h"
+#include "RageFile.h"
+#include "RageLog.h"
+#include <set>
+
+
+static RageSurface *TryOpenFile( RString sPath, bool bHeaderOnly, RString &error, RString format, bool &bKeepTrying )
+{
+	RageSurface *ret = NULL;
+	RageSurfaceUtils::OpenResult result;
+	if( !format.CompareNoCase("png") )
+		result = RageSurface_Load_PNG( sPath, ret, bHeaderOnly, error );
+	else if( !format.CompareNoCase("gif") )
+		result = RageSurface_Load_GIF( sPath, ret, bHeaderOnly, error );
+	else if( !format.CompareNoCase("jpg") )
+		result = RageSurface_Load_JPEG( sPath, ret, bHeaderOnly, error );
+	else if( !format.CompareNoCase("bmp") )
+		result = RageSurface_Load_BMP( sPath, ret, bHeaderOnly, error );
+	else
+	{
+		error = "Unsupported format";
+		bKeepTrying = true;
+		return NULL;
+	}
+
+	if( result == RageSurfaceUtils::OPEN_OK )
+	{
+		ASSERT( ret );
+		return ret;
+	}
+
+	LOG->Trace( "Format %s failed: %s", format.c_str(), error.c_str() );
+
+	/*
+	 * The file failed to open, or failed to read.  This indicates a problem that will
+	 * affect all readers, so don't waste time trying more readers. (OPEN_IO_ERROR)
+	 *
+	 * Errors fall in two categories:
+	 * OPEN_UNKNOWN_FILE_FORMAT: Data was successfully read from the file, but it's the
+	 * wrong file format.  The error message always looks like "unknown file format" or
+	 * "Not Vorbis data"; ignore it so we always give a consistent error message, and
+	 * continue trying other file formats.
+	 * 
+	 * OPEN_FATAL_ERROR: Either the file was opened successfully and appears to be the
+	 * correct format, but a fatal format-specific error was encountered that will probably
+	 * not be fixed by using a different reader (for example, an Ogg file that doesn't
+	 * actually contain any audio streams); or the file failed to open or read ("I/O
+	 * error", "permission denied"), in which case all other readers will probably fail,
+	 * too.  The returned error is used, and no other formats will be tried.
+	 */
+	bKeepTrying = (result != RageSurfaceUtils::OPEN_FATAL_ERROR);
+	switch( result )
+	{
+	case RageSurfaceUtils::OPEN_UNKNOWN_FILE_FORMAT:
+		bKeepTrying = true;
+		error = "Unknown file format";
+		break;
+
+	case RageSurfaceUtils::OPEN_FATAL_ERROR:
+		/* The file matched, but failed to load.  We know it's this type of data;
+		 * don't bother trying the other file types. */
+		bKeepTrying = false;
+		break;
+	}
+
+	return NULL;
+}
+
+RageSurface *RageSurfaceUtils::LoadFile( const RString &sPath, RString &error, bool bHeaderOnly )
+{
+	{
+		RageFile TestOpen;
+		if( !TestOpen.Open( sPath ) )
+		{
+			error = TestOpen.GetError();
+			return NULL;
+		}
+	}
+
+	set<RString> FileTypes;
+	FileTypes.insert("png");
+	FileTypes.insert("jpg");
+	FileTypes.insert("gif");
+	FileTypes.insert("bmp");
+
+	RString format = GetExtension(sPath);
+	format.MakeLower();
+
+	bool bKeepTrying = true;
+
+	/* If the extension matches a format, try that first. */
+	if( FileTypes.find(format) != FileTypes.end() )
+	{
+	    RageSurface *ret = TryOpenFile( sPath, bHeaderOnly, error, format, bKeepTrying );
+		if( ret )
+			return ret;
+		FileTypes.erase( format );
+	}
+
+	for( set<RString>::iterator it = FileTypes.begin(); bKeepTrying && it != FileTypes.end(); ++it )
+	{
+		RageSurface *ret = TryOpenFile( sPath, bHeaderOnly, error, *it, bKeepTrying );
+		if( ret )
+		{
+			LOG->UserLog( "Graphic file", sPath, "is really %s", it->c_str() );
+			return ret;
+		}
+	}
+
+	return NULL;
+}
+
+/*
+ * (c) 2004 Glenn Maynard
+ * All rights reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, and/or sell copies of the Software, and to permit persons to
+ * whom the Software is furnished to do so, provided that the above
+ * copyright notice(s) and this permission notice appear in all copies of
+ * the Software and that both the above copyright notice(s) and this
+ * permission notice appear in supporting documentation.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
+ * THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
+ * INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
+ * OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */