Add Fast LZMA2 codec

C/fast-lzma2/fl2_common.c

@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
+ * All rights reserved.
+ * Modified for FL2 by Conor McCarthy
+ *
+ * This source code is licensed under both the BSD-style license (found in the
+ * LICENSE file in the root directory of this source tree) and the GPLv2 (found
+ * in the COPYING file in the root directory of this source tree).
+ * You may select, at your option, one of the above-listed licenses.
+ */
+
+
+
+/*-*************************************
+*  Dependencies
+***************************************/
+#include <stdlib.h>      /* malloc, calloc, free */
+#include <string.h>      /* memset */
+#include "fast-lzma2.h"
+#include "fl2_error_private.h"
+#include "fl2_internal.h"
+
+
+/*-****************************************
+*  Version
+******************************************/
+FL2LIB_API unsigned FL2LIB_CALL FL2_versionNumber(void) { return FL2_VERSION_NUMBER; }
+
+FL2LIB_API const char* FL2LIB_CALL FL2_versionString(void) { return FL2_VERSION_STRING; }
+
+
+FL2LIB_API size_t FL2LIB_CALL FL2_compressBound(size_t srcSize)
+{
+    return FL2_COMPRESSBOUND(srcSize);
+}
+
+/*-****************************************
+*  FL2 Error Management
+******************************************/
+/*! FL2_isError() :
+ *  tells if a return value is an error code */
+FL2LIB_API unsigned FL2LIB_CALL FL2_isError(size_t code) { return ERR_isError(code); }
+
+/*! FL2_getErrorName() :
+ *  provides error code string from function result (useful for debugging) */
+FL2LIB_API const char* FL2LIB_CALL FL2_getErrorName(size_t code) { return ERR_getErrorName(code); }
+
+/*! FL2_getError() :
+ *  convert a `size_t` function result into a proper FL2_errorCode enum */
+FL2LIB_API FL2_ErrorCode FL2LIB_CALL FL2_getErrorCode(size_t code) { return ERR_getErrorCode(code); }
+
+/*! FL2_getErrorString() :
+ *  provides error code string from enum */
+FL2LIB_API const char* FL2LIB_CALL FL2_getErrorString(FL2_ErrorCode code) { return ERR_getFL2ErrorString(code); }
+
+/*! g_debuglog_enable :
+ *  turn on/off debug traces (global switch) */
+#if defined(FL2_DEBUG) && (FL2_DEBUG >= 2)
+int g_debuglog_enable = 1;
+#endif
+