diff options
Diffstat (limited to 'src/libs/3rdparty/7zip/unix/CPP/7zip/Compress/LzmaEncoder.cpp')
-rw-r--r-- | src/libs/3rdparty/7zip/unix/CPP/7zip/Compress/LzmaEncoder.cpp | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/src/libs/3rdparty/7zip/unix/CPP/7zip/Compress/LzmaEncoder.cpp b/src/libs/3rdparty/7zip/unix/CPP/7zip/Compress/LzmaEncoder.cpp new file mode 100644 index 000000000..484d04523 --- /dev/null +++ b/src/libs/3rdparty/7zip/unix/CPP/7zip/Compress/LzmaEncoder.cpp @@ -0,0 +1,161 @@ +// LzmaEncoder.cpp + +#include "StdAfx.h" + +#include "../../../C/Alloc.h" + +#include "../Common/CWrappers.h" +#include "../Common/StreamUtils.h" + +#include "LzmaEncoder.h" + +namespace NCompress { +namespace NLzma { + +static void *SzBigAlloc(void *, size_t size) { return BigAlloc(size); } +static void SzBigFree(void *, void *address) { BigFree(address); } +static ISzAlloc g_BigAlloc = { SzBigAlloc, SzBigFree }; + +static void *SzAlloc(void *, size_t size) { return MyAlloc(size); } +static void SzFree(void *, void *address) { MyFree(address); } +static ISzAlloc g_Alloc = { SzAlloc, SzFree }; + +CEncoder::CEncoder() +{ + _encoder = 0; + _encoder = LzmaEnc_Create(&g_Alloc); + if (_encoder == 0) + throw 1; +} + +CEncoder::~CEncoder() +{ + if (_encoder != 0) + LzmaEnc_Destroy(_encoder, &g_Alloc, &g_BigAlloc); +} + +inline wchar_t GetUpperChar(wchar_t c) +{ + if (c >= 'a' && c <= 'z') + c -= 0x20; + return c; +} + +static int ParseMatchFinder(const wchar_t *s, int *btMode, int *numHashBytes) +{ + wchar_t c = GetUpperChar(*s++); + if (c == L'H') + { + if (GetUpperChar(*s++) != L'C') + return 0; + int numHashBytesLoc = (int)(*s++ - L'0'); + if (numHashBytesLoc < 4 || numHashBytesLoc > 4) + return 0; + if (*s++ != 0) + return 0; + *btMode = 0; + *numHashBytes = numHashBytesLoc; + return 1; + } + if (c != L'B') + return 0; + + if (GetUpperChar(*s++) != L'T') + return 0; + int numHashBytesLoc = (int)(*s++ - L'0'); + if (numHashBytesLoc < 2 || numHashBytesLoc > 4) + return 0; + c = GetUpperChar(*s++); + if (c != L'\0') + return 0; + *btMode = 1; + *numHashBytes = numHashBytesLoc; + return 1; +} + +#define SET_PROP_32(_id_, _dest_) case NCoderPropID::_id_: ep._dest_ = v; break; + +HRESULT SetLzmaProp(PROPID propID, const PROPVARIANT &prop, CLzmaEncProps &ep) +{ + if (propID == NCoderPropID::kMatchFinder) + { + if (prop.vt != VT_BSTR) + return E_INVALIDARG; + return ParseMatchFinder(prop.bstrVal, &ep.btMode, &ep.numHashBytes) ? S_OK : E_INVALIDARG; + } + if (propID > NCoderPropID::kReduceSize) + return S_OK; + if (propID == NCoderPropID::kReduceSize) + { + if (prop.vt == VT_UI8) + ep.reduceSize = prop.uhVal.QuadPart; + return S_OK; + } + if (prop.vt != VT_UI4) + return E_INVALIDARG; + UInt32 v = prop.ulVal; + switch (propID) + { + case NCoderPropID::kDefaultProp: if (v > 31) return E_INVALIDARG; ep.dictSize = (UInt32)1 << (unsigned)v; break; + SET_PROP_32(kLevel, level) + SET_PROP_32(kNumFastBytes, fb) + SET_PROP_32(kMatchFinderCycles, mc) + SET_PROP_32(kAlgorithm, algo) + SET_PROP_32(kDictionarySize, dictSize) + SET_PROP_32(kPosStateBits, pb) + SET_PROP_32(kLitPosBits, lp) + SET_PROP_32(kLitContextBits, lc) + SET_PROP_32(kNumThreads, numThreads) + default: return E_INVALIDARG; + } + return S_OK; +} + +STDMETHODIMP CEncoder::SetCoderProperties(const PROPID *propIDs, + const PROPVARIANT *coderProps, UInt32 numProps) +{ + CLzmaEncProps props; + LzmaEncProps_Init(&props); + + for (UInt32 i = 0; i < numProps; i++) + { + const PROPVARIANT &prop = coderProps[i]; + PROPID propID = propIDs[i]; + switch (propID) + { + case NCoderPropID::kEndMarker: + if (prop.vt != VT_BOOL) return E_INVALIDARG; props.writeEndMark = (prop.boolVal != VARIANT_FALSE); break; + default: + RINOK(SetLzmaProp(propID, prop, props)); + } + } + return SResToHRESULT(LzmaEnc_SetProps(_encoder, &props)); +} + +STDMETHODIMP CEncoder::WriteCoderProperties(ISequentialOutStream *outStream) +{ + Byte props[LZMA_PROPS_SIZE]; + size_t size = LZMA_PROPS_SIZE; + RINOK(LzmaEnc_WriteProperties(_encoder, props, &size)); + return WriteStream(outStream, props, size); +} + +STDMETHODIMP CEncoder::Code(ISequentialInStream *inStream, ISequentialOutStream *outStream, + const UInt64 * /* inSize */, const UInt64 * /* outSize */, ICompressProgressInfo *progress) +{ + CSeqInStreamWrap inWrap(inStream); + CSeqOutStreamWrap outWrap(outStream); + CCompressProgressWrap progressWrap(progress); + + SRes res = LzmaEnc_Encode(_encoder, &outWrap.p, &inWrap.p, progress ? &progressWrap.p : NULL, &g_Alloc, &g_BigAlloc); + _inputProcessed = inWrap.Processed; + if (res == SZ_ERROR_READ && inWrap.Res != S_OK) + return inWrap.Res; + if (res == SZ_ERROR_WRITE && outWrap.Res != S_OK) + return outWrap.Res; + if (res == SZ_ERROR_PROGRESS && progressWrap.Res != S_OK) + return progressWrap.Res; + return SResToHRESULT(res); +} + +}} |