From f2902217b38cf2e16e851ae84d61247f8e828180 Mon Sep 17 00:00:00 2001
From: wolfbeast <mcwerewolf@wolfbeast.com>
Date: Mon, 25 Mar 2019 17:53:14 +0100
Subject: Update the 7z installer stub source to 18.05.

Tag #1022
---
 .../7zstub/src/CPP/7zip/Compress/LzmaEncoder.cpp   | 182 +++++++++++++++++++++
 1 file changed, 182 insertions(+)
 create mode 100644 other-licenses/7zstub/src/CPP/7zip/Compress/LzmaEncoder.cpp

(limited to 'other-licenses/7zstub/src/CPP/7zip/Compress/LzmaEncoder.cpp')

diff --git a/other-licenses/7zstub/src/CPP/7zip/Compress/LzmaEncoder.cpp b/other-licenses/7zstub/src/CPP/7zip/Compress/LzmaEncoder.cpp
new file mode 100644
index 000000000..3151c3d21
--- /dev/null
+++ b/other-licenses/7zstub/src/CPP/7zip/Compress/LzmaEncoder.cpp
@@ -0,0 +1,182 @@
+// LzmaEncoder.cpp
+
+#include "StdAfx.h"
+
+#include "../../../C/Alloc.h"
+
+#include "../Common/CWrappers.h"
+#include "../Common/StreamUtils.h"
+
+#include "LzmaEncoder.h"
+
+namespace NCompress {
+namespace NLzma {
+
+CEncoder::CEncoder()
+{
+  _encoder = NULL;
+  _encoder = LzmaEnc_Create(&g_AlignedAlloc);
+  if (!_encoder)
+    throw 1;
+}
+
+CEncoder::~CEncoder()
+{
+  if (_encoder)
+    LzmaEnc_Destroy(_encoder, &g_AlignedAlloc, &g_BigAlloc);
+}
+
+static 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;
+  if (*s != 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;
+    else
+      return E_INVALIDARG;
+    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::SetCoderPropertiesOpt(const PROPID *propIDs,
+    const PROPVARIANT *coderProps, UInt32 numProps)
+{
+  for (UInt32 i = 0; i < numProps; i++)
+  {
+    const PROPVARIANT &prop = coderProps[i];
+    PROPID propID = propIDs[i];
+    if (propID == NCoderPropID::kExpectedDataSize)
+      if (prop.vt == VT_UI8)
+        LzmaEnc_SetDataSize(_encoder, prop.uhVal.QuadPart);
+  }
+  return S_OK;
+}
+
+
+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);
+}
+
+
+#define RET_IF_WRAP_ERROR(wrapRes, sRes, sResErrorCode) \
+  if (wrapRes != S_OK /* && (sRes == SZ_OK || sRes == sResErrorCode) */) return wrapRes;
+
+STDMETHODIMP CEncoder::Code(ISequentialInStream *inStream, ISequentialOutStream *outStream,
+    const UInt64 * /* inSize */, const UInt64 * /* outSize */, ICompressProgressInfo *progress)
+{
+  CSeqInStreamWrap inWrap;
+  CSeqOutStreamWrap outWrap;
+  CCompressProgressWrap progressWrap;
+
+  inWrap.Init(inStream);
+  outWrap.Init(outStream);
+  progressWrap.Init(progress);
+
+  SRes res = LzmaEnc_Encode(_encoder, &outWrap.vt, &inWrap.vt,
+      progress ? &progressWrap.vt : NULL, &g_AlignedAlloc, &g_BigAlloc);
+
+  _inputProcessed = inWrap.Processed;
+
+  RET_IF_WRAP_ERROR(inWrap.Res, res, SZ_ERROR_READ)
+  RET_IF_WRAP_ERROR(outWrap.Res, res, SZ_ERROR_WRITE)
+  RET_IF_WRAP_ERROR(progressWrap.Res, res, SZ_ERROR_PROGRESS)
+  
+  return SResToHRESULT(res);
+}
+
+}}
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