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- /**
- * PhysicsFS; a portable, flexible file i/o abstraction.
- *
- * Documentation is in physfs.h. It's verbose, honest. :)
- *
- * Please see the file LICENSE.txt in the source's root directory.
- *
- * This file written by Ryan C. Gordon.
- */
-
- #define __PHYSICSFS_INTERNAL__
- #include "physfs_internal.h"
-
- #ifndef PHYSFS_Swap16
- static inline PHYSFS_uint16 PHYSFS_Swap16(PHYSFS_uint16 D)
- {
- return ((D<<8)|(D>>8));
- }
- #endif
- #ifndef PHYSFS_Swap32
- static inline PHYSFS_uint32 PHYSFS_Swap32(PHYSFS_uint32 D)
- {
- return ((D<<24)|((D<<8)&0x00FF0000)|((D>>8)&0x0000FF00)|(D>>24));
- }
- #endif
- #ifndef PHYSFS_NO_64BIT_SUPPORT
- #ifndef PHYSFS_Swap64
- static inline PHYSFS_uint64 PHYSFS_Swap64(PHYSFS_uint64 val) {
- PHYSFS_uint32 hi, lo;
-
- /* Separate into high and low 32-bit values and swap them */
- lo = (PHYSFS_uint32)(val&0xFFFFFFFF);
- val >>= 32;
- hi = (PHYSFS_uint32)(val&0xFFFFFFFF);
- val = PHYSFS_Swap32(lo);
- val <<= 32;
- val |= PHYSFS_Swap32(hi);
- return val;
- }
- #endif
- #else
- #ifndef PHYSFS_Swap64
- /* This is mainly to keep compilers from complaining in PHYSFS code.
- If there is no real 64-bit datatype, then compilers will complain about
- the fake 64-bit datatype that PHYSFS provides when it compiles user code.
- */
- #define PHYSFS_Swap64(X) (X)
- #endif
- #endif /* PHYSFS_NO_64BIT_SUPPORT */
-
-
- /* Byteswap item from the specified endianness to the native endianness */
- #if PHYSFS_BYTEORDER == PHYSFS_LIL_ENDIAN
- PHYSFS_uint16 PHYSFS_swapULE16(PHYSFS_uint16 x) { return x; }
- PHYSFS_sint16 PHYSFS_swapSLE16(PHYSFS_sint16 x) { return x; }
- PHYSFS_uint32 PHYSFS_swapULE32(PHYSFS_uint32 x) { return x; }
- PHYSFS_sint32 PHYSFS_swapSLE32(PHYSFS_sint32 x) { return x; }
- PHYSFS_uint64 PHYSFS_swapULE64(PHYSFS_uint64 x) { return x; }
- PHYSFS_sint64 PHYSFS_swapSLE64(PHYSFS_sint64 x) { return x; }
-
- PHYSFS_uint16 PHYSFS_swapUBE16(PHYSFS_uint16 x) { return PHYSFS_Swap16(x); }
- PHYSFS_sint16 PHYSFS_swapSBE16(PHYSFS_sint16 x) { return PHYSFS_Swap16(x); }
- PHYSFS_uint32 PHYSFS_swapUBE32(PHYSFS_uint32 x) { return PHYSFS_Swap32(x); }
- PHYSFS_sint32 PHYSFS_swapSBE32(PHYSFS_sint32 x) { return PHYSFS_Swap32(x); }
- PHYSFS_uint64 PHYSFS_swapUBE64(PHYSFS_uint64 x) { return PHYSFS_Swap64(x); }
- PHYSFS_sint64 PHYSFS_swapSBE64(PHYSFS_sint64 x) { return PHYSFS_Swap64(x); }
- #else
- PHYSFS_uint16 PHYSFS_swapULE16(PHYSFS_uint16 x) { return PHYSFS_Swap16(x); }
- PHYSFS_sint16 PHYSFS_swapSLE16(PHYSFS_sint16 x) { return PHYSFS_Swap16(x); }
- PHYSFS_uint32 PHYSFS_swapULE32(PHYSFS_uint32 x) { return PHYSFS_Swap32(x); }
- PHYSFS_sint32 PHYSFS_swapSLE32(PHYSFS_sint32 x) { return PHYSFS_Swap32(x); }
- PHYSFS_uint64 PHYSFS_swapULE64(PHYSFS_uint64 x) { return PHYSFS_Swap64(x); }
- PHYSFS_sint64 PHYSFS_swapSLE64(PHYSFS_sint64 x) { return PHYSFS_Swap64(x); }
-
- PHYSFS_uint16 PHYSFS_swapUBE16(PHYSFS_uint16 x) { return x; }
- PHYSFS_sint16 PHYSFS_swapSBE16(PHYSFS_sint16 x) { return x; }
- PHYSFS_uint32 PHYSFS_swapUBE32(PHYSFS_uint32 x) { return x; }
- PHYSFS_sint32 PHYSFS_swapSBE32(PHYSFS_sint32 x) { return x; }
- PHYSFS_uint64 PHYSFS_swapUBE64(PHYSFS_uint64 x) { return x; }
- PHYSFS_sint64 PHYSFS_swapSBE64(PHYSFS_sint64 x) { return x; }
- #endif
-
- static inline int readAll(PHYSFS_File *file, void *val, const size_t len)
- {
- return (PHYSFS_readBytes(file, val, len) == len);
- } /* readAll */
-
- #define PHYSFS_BYTEORDER_READ(datatype, swaptype) \
- int PHYSFS_read##swaptype(PHYSFS_File *file, PHYSFS_##datatype *val) { \
- PHYSFS_##datatype in; \
- BAIL_IF(val == NULL, PHYSFS_ERR_INVALID_ARGUMENT, 0); \
- BAIL_IF_ERRPASS(!readAll(file, &in, sizeof (in)), 0); \
- *val = PHYSFS_swap##swaptype(in); \
- return 1; \
- }
-
- PHYSFS_BYTEORDER_READ(sint16, SLE16)
- PHYSFS_BYTEORDER_READ(uint16, ULE16)
- PHYSFS_BYTEORDER_READ(sint16, SBE16)
- PHYSFS_BYTEORDER_READ(uint16, UBE16)
- PHYSFS_BYTEORDER_READ(sint32, SLE32)
- PHYSFS_BYTEORDER_READ(uint32, ULE32)
- PHYSFS_BYTEORDER_READ(sint32, SBE32)
- PHYSFS_BYTEORDER_READ(uint32, UBE32)
- PHYSFS_BYTEORDER_READ(sint64, SLE64)
- PHYSFS_BYTEORDER_READ(uint64, ULE64)
- PHYSFS_BYTEORDER_READ(sint64, SBE64)
- PHYSFS_BYTEORDER_READ(uint64, UBE64)
-
-
- static inline int writeAll(PHYSFS_File *f, const void *val, const size_t len)
- {
- return (PHYSFS_writeBytes(f, val, len) == len);
- } /* writeAll */
-
- #define PHYSFS_BYTEORDER_WRITE(datatype, swaptype) \
- int PHYSFS_write##swaptype(PHYSFS_File *file, PHYSFS_##datatype val) { \
- const PHYSFS_##datatype out = PHYSFS_swap##swaptype(val); \
- BAIL_IF_ERRPASS(!writeAll(file, &out, sizeof (out)), 0); \
- return 1; \
- }
-
- PHYSFS_BYTEORDER_WRITE(sint16, SLE16)
- PHYSFS_BYTEORDER_WRITE(uint16, ULE16)
- PHYSFS_BYTEORDER_WRITE(sint16, SBE16)
- PHYSFS_BYTEORDER_WRITE(uint16, UBE16)
- PHYSFS_BYTEORDER_WRITE(sint32, SLE32)
- PHYSFS_BYTEORDER_WRITE(uint32, ULE32)
- PHYSFS_BYTEORDER_WRITE(sint32, SBE32)
- PHYSFS_BYTEORDER_WRITE(uint32, UBE32)
- PHYSFS_BYTEORDER_WRITE(sint64, SLE64)
- PHYSFS_BYTEORDER_WRITE(uint64, ULE64)
- PHYSFS_BYTEORDER_WRITE(sint64, SBE64)
- PHYSFS_BYTEORDER_WRITE(uint64, UBE64)
-
- /* end of physfs_byteorder.c ... */
-
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