diff options
Diffstat (limited to 'deps/lzma-16.04/C/7z.h')
| -rw-r--r-- | deps/lzma-16.04/C/7z.h | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/deps/lzma-16.04/C/7z.h b/deps/lzma-16.04/C/7z.h new file mode 100644 index 0000000..216f381 --- /dev/null +++ b/deps/lzma-16.04/C/7z.h @@ -0,0 +1,202 @@ +/* 7z.h -- 7z interface
+2015-11-18 : Igor Pavlov : Public domain */
+
+#ifndef __7Z_H
+#define __7Z_H
+
+#include "7zTypes.h"
+
+EXTERN_C_BEGIN
+
+#define k7zStartHeaderSize 0x20
+#define k7zSignatureSize 6
+
+extern const Byte k7zSignature[k7zSignatureSize];
+
+typedef struct
+{
+ const Byte *Data;
+ size_t Size;
+} CSzData;
+
+/* CSzCoderInfo & CSzFolder support only default methods */
+
+typedef struct
+{
+ size_t PropsOffset;
+ UInt32 MethodID;
+ Byte NumStreams;
+ Byte PropsSize;
+} CSzCoderInfo;
+
+typedef struct
+{
+ UInt32 InIndex;
+ UInt32 OutIndex;
+} CSzBond;
+
+#define SZ_NUM_CODERS_IN_FOLDER_MAX 4
+#define SZ_NUM_BONDS_IN_FOLDER_MAX 3
+#define SZ_NUM_PACK_STREAMS_IN_FOLDER_MAX 4
+
+typedef struct
+{
+ UInt32 NumCoders;
+ UInt32 NumBonds;
+ UInt32 NumPackStreams;
+ UInt32 UnpackStream;
+ UInt32 PackStreams[SZ_NUM_PACK_STREAMS_IN_FOLDER_MAX];
+ CSzBond Bonds[SZ_NUM_BONDS_IN_FOLDER_MAX];
+ CSzCoderInfo Coders[SZ_NUM_CODERS_IN_FOLDER_MAX];
+} CSzFolder;
+
+
+SRes SzGetNextFolderItem(CSzFolder *f, CSzData *sd);
+
+typedef struct
+{
+ UInt32 Low;
+ UInt32 High;
+} CNtfsFileTime;
+
+typedef struct
+{
+ Byte *Defs; /* MSB 0 bit numbering */
+ UInt32 *Vals;
+} CSzBitUi32s;
+
+typedef struct
+{
+ Byte *Defs; /* MSB 0 bit numbering */
+ // UInt64 *Vals;
+ CNtfsFileTime *Vals;
+} CSzBitUi64s;
+
+#define SzBitArray_Check(p, i) (((p)[(i) >> 3] & (0x80 >> ((i) & 7))) != 0)
+
+#define SzBitWithVals_Check(p, i) ((p)->Defs && ((p)->Defs[(i) >> 3] & (0x80 >> ((i) & 7))) != 0)
+
+typedef struct
+{
+ UInt32 NumPackStreams;
+ UInt32 NumFolders;
+
+ UInt64 *PackPositions; // NumPackStreams + 1
+ CSzBitUi32s FolderCRCs; // NumFolders
+
+ size_t *FoCodersOffsets; // NumFolders + 1
+ UInt32 *FoStartPackStreamIndex; // NumFolders + 1
+ UInt32 *FoToCoderUnpackSizes; // NumFolders + 1
+ Byte *FoToMainUnpackSizeIndex; // NumFolders
+ UInt64 *CoderUnpackSizes; // for all coders in all folders
+
+ Byte *CodersData;
+} CSzAr;
+
+UInt64 SzAr_GetFolderUnpackSize(const CSzAr *p, UInt32 folderIndex);
+
+SRes SzAr_DecodeFolder(const CSzAr *p, UInt32 folderIndex,
+ ILookInStream *stream, UInt64 startPos,
+ Byte *outBuffer, size_t outSize,
+ ISzAlloc *allocMain);
+
+typedef struct
+{
+ CSzAr db;
+
+ UInt64 startPosAfterHeader;
+ UInt64 dataPos;
+
+ UInt32 NumFiles;
+
+ UInt64 *UnpackPositions; // NumFiles + 1
+ // Byte *IsEmptyFiles;
+ Byte *IsDirs;
+ CSzBitUi32s CRCs;
+
+ CSzBitUi32s Attribs;
+ // CSzBitUi32s Parents;
+ CSzBitUi64s MTime;
+ CSzBitUi64s CTime;
+
+ UInt32 *FolderToFile; // NumFolders + 1
+ UInt32 *FileToFolder; // NumFiles
+
+ size_t *FileNameOffsets; /* in 2-byte steps */
+ Byte *FileNames; /* UTF-16-LE */
+} CSzArEx;
+
+#define SzArEx_IsDir(p, i) (SzBitArray_Check((p)->IsDirs, i))
+
+#define SzArEx_GetFileSize(p, i) ((p)->UnpackPositions[(i) + 1] - (p)->UnpackPositions[i])
+
+void SzArEx_Init(CSzArEx *p);
+void SzArEx_Free(CSzArEx *p, ISzAlloc *alloc);
+UInt64 SzArEx_GetFolderStreamPos(const CSzArEx *p, UInt32 folderIndex, UInt32 indexInFolder);
+int SzArEx_GetFolderFullPackSize(const CSzArEx *p, UInt32 folderIndex, UInt64 *resSize);
+
+/*
+if dest == NULL, the return value specifies the required size of the buffer,
+ in 16-bit characters, including the null-terminating character.
+if dest != NULL, the return value specifies the number of 16-bit characters that
+ are written to the dest, including the null-terminating character. */
+
+size_t SzArEx_GetFileNameUtf16(const CSzArEx *p, size_t fileIndex, UInt16 *dest);
+
+/*
+size_t SzArEx_GetFullNameLen(const CSzArEx *p, size_t fileIndex);
+UInt16 *SzArEx_GetFullNameUtf16_Back(const CSzArEx *p, size_t fileIndex, UInt16 *dest);
+*/
+
+
+
+/*
+ SzArEx_Extract extracts file from archive
+
+ *outBuffer must be 0 before first call for each new archive.
+
+ Extracting cache:
+ If you need to decompress more than one file, you can send
+ these values from previous call:
+ *blockIndex,
+ *outBuffer,
+ *outBufferSize
+ You can consider "*outBuffer" as cache of solid block. If your archive is solid,
+ it will increase decompression speed.
+
+ If you use external function, you can declare these 3 cache variables
+ (blockIndex, outBuffer, outBufferSize) as static in that external function.
+
+ Free *outBuffer and set *outBuffer to 0, if you want to flush cache.
+*/
+
+SRes SzArEx_Extract(
+ const CSzArEx *db,
+ ILookInStream *inStream,
+ UInt32 fileIndex, /* index of file */
+ UInt32 *blockIndex, /* index of solid block */
+ Byte **outBuffer, /* pointer to pointer to output buffer (allocated with allocMain) */
+ size_t *outBufferSize, /* buffer size for output buffer */
+ size_t *offset, /* offset of stream for required file in *outBuffer */
+ size_t *outSizeProcessed, /* size of file in *outBuffer */
+ ISzAlloc *allocMain,
+ ISzAlloc *allocTemp);
+
+
+/*
+SzArEx_Open Errors:
+SZ_ERROR_NO_ARCHIVE
+SZ_ERROR_ARCHIVE
+SZ_ERROR_UNSUPPORTED
+SZ_ERROR_MEM
+SZ_ERROR_CRC
+SZ_ERROR_INPUT_EOF
+SZ_ERROR_FAIL
+*/
+
+SRes SzArEx_Open(CSzArEx *p, ILookInStream *inStream,
+ ISzAlloc *allocMain, ISzAlloc *allocTemp);
+
+EXTERN_C_END
+
+#endif
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