| /* Types.h -- Basic types |
| 2010-03-11 : Igor Pavlov : Public domain */ |
| |
| #ifndef __7Z_TYPES_H |
| #define __7Z_TYPES_H |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| #include <stdbool.h> |
| |
| |
| #define SZ_OK 0 |
| |
| #define SZ_ERROR_DATA 1 |
| #define SZ_ERROR_MEM 2 |
| #define SZ_ERROR_CRC 3 |
| #define SZ_ERROR_UNSUPPORTED 4 |
| #define SZ_ERROR_PARAM 5 |
| #define SZ_ERROR_INPUT_EOF 6 |
| #define SZ_ERROR_OUTPUT_EOF 7 |
| #define SZ_ERROR_READ 8 |
| #define SZ_ERROR_WRITE 9 |
| #define SZ_ERROR_PROGRESS 10 |
| #define SZ_ERROR_FAIL 11 |
| #define SZ_ERROR_THREAD 12 |
| |
| #define SZ_ERROR_ARCHIVE 16 |
| #define SZ_ERROR_NO_ARCHIVE 17 |
| |
| typedef int SRes; |
| typedef int WRes; /* This was DWORD for _WIN32. That's uint32_t */ |
| |
| #ifndef RINOK |
| #define RINOK(x) { int __result__ = (x); if (__result__ != 0) return __result__; } |
| #endif |
| |
| /* The following interfaces use first parameter as pointer to structure */ |
| |
| struct IByteIn |
| { |
| uint8_t (*Read)(void *p); /* reads one byte, returns 0 in case of EOF or error */ |
| }; |
| |
| struct IByteOut |
| { |
| void (*Write)(void *p, uint8_t b); |
| }; |
| |
| struct ISeqInStream |
| { |
| SRes (*Read)(void *p, void *buf, size_t *size); |
| /* if (input(*size) != 0 && output(*size) == 0) means end_of_stream. |
| (output(*size) < input(*size)) is allowed */ |
| }; |
| |
| /* it can return SZ_ERROR_INPUT_EOF */ |
| SRes SeqInStream_Read(struct ISeqInStream *stream, void *buf, size_t size); |
| SRes SeqInStream_Read2(struct ISeqInStream *stream, void *buf, size_t size, SRes errorType); |
| SRes SeqInStream_ReadByte(struct ISeqInStream *stream, uint8_t *buf); |
| |
| struct ISeqOutStream |
| { |
| size_t (*Write)(void *p, const void *buf, size_t size); |
| /* Returns: result - the number of actually written bytes. |
| (result < size) means error */ |
| }; |
| |
| enum ESzSeek |
| { |
| SZ_SEEK_SET = 0, |
| SZ_SEEK_CUR = 1, |
| SZ_SEEK_END = 2 |
| }; |
| |
| struct ISeekInStream |
| { |
| SRes (*Read)(void *p, void *buf, size_t *size); /* same as ISeqInStream::Read */ |
| SRes (*Seek)(void *p, int64_t *pos, enum ESzSeek origin); |
| }; |
| |
| struct ILookInStream |
| { |
| SRes (*Look)(void *p, const void **buf, size_t *size); |
| /* if (input(*size) != 0 && output(*size) == 0) means end_of_stream. |
| (output(*size) > input(*size)) is not allowed |
| (output(*size) < input(*size)) is allowed */ |
| SRes (*Skip)(void *p, size_t offset); |
| /* offset must be <= output(*size) of Look */ |
| |
| SRes (*Read)(void *p, void *buf, size_t *size); |
| /* reads directly (without buffer). It's same as ISeqInStream::Read */ |
| SRes (*Seek)(void *p, int64_t *pos, enum ESzSeek origin); |
| }; |
| |
| SRes LookInStream_LookRead(struct ILookInStream *stream, void *buf, size_t *size); |
| SRes LookInStream_SeekTo(struct ILookInStream *stream, uint64_t offset); |
| |
| /* reads via ILookInStream::Read */ |
| SRes LookInStream_Read2(struct ILookInStream *stream, void *buf, size_t size, SRes errorType); |
| SRes LookInStream_Read(struct ILookInStream *stream, void *buf, size_t size); |
| |
| #define LookToRead_BUF_SIZE (1 << 14) |
| |
| struct CLookToRead |
| { |
| struct ILookInStream s; |
| struct ISeekInStream *realStream; |
| size_t pos; |
| size_t size; |
| uint8_t buf[LookToRead_BUF_SIZE]; |
| }; |
| |
| void LookToRead_CreateVTable(struct CLookToRead *p, int lookahead); |
| void LookToRead_Init(struct CLookToRead *p); |
| |
| struct CSecToLook |
| { |
| struct ISeqInStream s; |
| struct ILookInStream *realStream; |
| }; |
| |
| void SecToLook_CreateVTable(struct CSecToLook *p); |
| |
| struct CSecToRead |
| { |
| struct ISeqInStream s; |
| struct ILookInStream *realStream; |
| }; |
| |
| void SecToRead_CreateVTable(struct CSecToRead *p); |
| |
| struct ICompressProgress |
| { |
| SRes (*Progress)(void *p, uint64_t inSize, uint64_t outSize); |
| /* Returns: result. (result != SZ_OK) means break. |
| Value (uint64_t)(int64_t)-1 for size means unknown value. */ |
| }; |
| |
| struct ISzAlloc |
| { |
| void *(*Alloc)(void *p, size_t size); |
| void (*Free)(void *p, void *address); /* address can be 0 */ |
| }; |
| |
| #define IAlloc_Alloc(p, size) (p)->Alloc((p), size) |
| #define IAlloc_Free(p, a) (p)->Free((p), a) |
| |
| #endif |