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79 lines
1.9 KiB
C++
79 lines
1.9 KiB
C++
// VFSInternal.h - misc things that are not required to be visible outside of the library.
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// For conditions of distribution and use, see copyright notice in VFS.h
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// !! this file is supposed to be included ONLY from VFS*.cpp files.
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#ifndef VFS_INTERNAL_H
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#define VFS_INTERNAL_H
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// checks to enforce correct including
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#ifdef TTVFS_VFS_H
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#error Oops, TTVFS_VFS_H is defined, someone messed up and included ttvfs.h wrongly.
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#endif
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#include "VFSDefines.h"
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#if defined(VFS_LARGEFILE_SUPPORT)
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# ifndef _LARGEFILE_SOURCE
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# define _LARGEFILE_SOURCE
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# endif
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# ifndef _LARGEFILE64_SOURCE
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# define _LARGEFILE64_SOURCE
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# endif
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# ifdef _FILE_OFFSET_BITS
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# undef _FILE_OFFSET_BITS
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# endif
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# ifndef _FILE_OFFSET_BITS
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# define _FILE_OFFSET_BITS 64
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# endif
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#endif
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#if _MSC_VER
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# ifndef _CRT_SECURE_NO_WARNINGS
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# define _CRT_SECURE_NO_WARNINGS
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# endif
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# ifndef _CRT_SECURE_NO_DEPRECATE
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# define _CRT_SECURE_NO_DEPRECATE
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# endif
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#endif
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// These are used for small, temporary memory allocations that can remain on the stack.
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// If alloca is available, this is the preferred way.
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#include <stdlib.h>
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#ifdef _WIN32
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# include <malloc.h> // MSVC/MinGW still need this for alloca. Seems to be windows-specific failure
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#endif
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#define VFS_STACK_ALLOC(size) alloca(size)
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#define VFS_STACK_FREE(ptr) /* no need to free anything here */
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// Fail-safe:
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//#define VFS_STACK_ALLOC(size) malloc(size)
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//#define VFS_STACK_FREE(ptr) free(ptr)
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#include <string.h>
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#include <string>
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#include <assert.h>
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VFS_NAMESPACE_START
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template <typename DST, typename SRC> inline DST safecast(SRC p)
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{
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#ifndef NDEBUG
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assert(!p || static_cast<DST>(p) == dynamic_cast<DST>(p));
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#endif
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return static_cast<DST>(p);
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}
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template <typename DST, typename SRC> inline DST safecastNonNull(SRC p)
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{
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#ifndef NDEBUG
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assert(p && static_cast<DST>(p) == dynamic_cast<DST>(p));
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#endif
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return static_cast<DST>(p);
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}
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VFS_NAMESPACE_END
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#endif
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