Keep only base/extractor.[cc|h].

third_party/lzma/v4_65/files/CPP/7zip/Common/CreateCoder.cpp

-// CreateCoder.cpp
-
-#include "StdAfx.h"
-
-#include "CreateCoder.h"
-
-#include "../../Windows/PropVariant.h"
-#include "../../Windows/Defs.h"
-#include "FilterCoder.h"
-#include "RegisterCodec.h"
-
-static const unsigned int kNumCodecsMax = 64;
-unsigned int g_NumCodecs = 0;
-const CCodecInfo *g_Codecs[kNumCodecsMax];
-void RegisterCodec(const CCodecInfo *codecInfo)
-{
-  if (g_NumCodecs < kNumCodecsMax)
-    g_Codecs[g_NumCodecs++] = codecInfo;
-}
-
-#ifdef EXTERNAL_CODECS
-static HRESULT ReadNumberOfStreams(ICompressCodecsInfo *codecsInfo, UInt32 index, PROPID propID, UInt32 &res)
-{
-  NWindows::NCOM::CPropVariant prop;
-  RINOK(codecsInfo->GetProperty(index, propID, &prop));
-  if (prop.vt == VT_EMPTY)
-    res = 1;
-  else if (prop.vt == VT_UI4)
-    res = prop.ulVal;
-  else
-    return E_INVALIDARG;
-  return S_OK;
-}
-
-static HRESULT ReadIsAssignedProp(ICompressCodecsInfo *codecsInfo, UInt32 index, PROPID propID, bool &res)
-{
-  NWindows::NCOM::CPropVariant prop;
-  RINOK(codecsInfo->GetProperty(index, propID, &prop));
-  if (prop.vt == VT_EMPTY)
-    res = true;
-  else if (prop.vt == VT_BOOL)
-    res = VARIANT_BOOLToBool(prop.boolVal);
-  else
-    return E_INVALIDARG;
-  return S_OK;
-}
-
-HRESULT LoadExternalCodecs(ICompressCodecsInfo *codecsInfo, CObjectVector<CCodecInfoEx> &externalCodecs)
-{
-  UInt32 num;
-  RINOK(codecsInfo->GetNumberOfMethods(&num));
-  for (UInt32 i = 0; i < num; i++)
-  {
-    CCodecInfoEx info;
-    NWindows::NCOM::CPropVariant prop;
-    RINOK(codecsInfo->GetProperty(i, NMethodPropID::kID, &prop));
-    // if (prop.vt != VT_BSTR)
-    // info.Id.IDSize = (Byte)SysStringByteLen(prop.bstrVal);
-    // memmove(info.Id.ID, prop.bstrVal, info.Id.IDSize);
-    if (prop.vt != VT_UI8)
-    {
-      continue; // old Interface
-      // return E_INVALIDARG;
-    }
-    info.Id = prop.uhVal.QuadPart;
-    prop.Clear();
-    
-    RINOK(codecsInfo->GetProperty(i, NMethodPropID::kName, &prop));
-    if (prop.vt == VT_BSTR)
-      info.Name = prop.bstrVal;
-    else if (prop.vt != VT_EMPTY)
-      return E_INVALIDARG;;
-    
-    RINOK(ReadNumberOfStreams(codecsInfo, i, NMethodPropID::kInStreams, info.NumInStreams));
-    RINOK(ReadNumberOfStreams(codecsInfo, i, NMethodPropID::kOutStreams, info.NumOutStreams));
-    RINOK(ReadIsAssignedProp(codecsInfo, i, NMethodPropID::kEncoderIsAssigned, info.EncoderIsAssigned));
-    RINOK(ReadIsAssignedProp(codecsInfo, i, NMethodPropID::kDecoderIsAssigned, info.DecoderIsAssigned));
-    
-    externalCodecs.Add(info);
-  }
-  return S_OK;
-}
-
-#endif
-
-bool FindMethod(
-  #ifdef EXTERNAL_CODECS
-  ICompressCodecsInfo * /* codecsInfo */, const CObjectVector<CCodecInfoEx> *externalCodecs,
-  #endif
-  const UString &name,
-  CMethodId &methodId, UInt32 &numInStreams, UInt32 &numOutStreams)
-{
-  UInt32 i;
-  for (i = 0; i < g_NumCodecs; i++)
-  {
-    const CCodecInfo &codec = *g_Codecs[i];
-    if (name.CompareNoCase(codec.Name) == 0)
-    {
-      methodId = codec.Id;
-      numInStreams = codec.NumInStreams;
-      numOutStreams = 1;
-      return true;
-    }
-  }
-  #ifdef EXTERNAL_CODECS
-  if (externalCodecs)
-    for (i = 0; i < (UInt32)externalCodecs->Size(); i++)
-    {
-      const CCodecInfoEx &codec = (*externalCodecs)[i];
-      if (codec.Name.CompareNoCase(name) == 0)
-      {
-        methodId = codec.Id;
-        numInStreams = codec.NumInStreams;
-        numOutStreams = codec.NumOutStreams;
-        return true;
-      }
-    }
-  #endif
-  return false;
-}
-
-bool FindMethod(
-  #ifdef EXTERNAL_CODECS
-  ICompressCodecsInfo * /* codecsInfo */, const CObjectVector<CCodecInfoEx> *externalCodecs,
-  #endif
-  CMethodId methodId, UString &name)
-{
-  UInt32 i;
-  for (i = 0; i < g_NumCodecs; i++)
-  {
-    const CCodecInfo &codec = *g_Codecs[i];
-    if (methodId == codec.Id)
-    {
-      name = codec.Name;
-      return true;
-    }
-  }
-  #ifdef EXTERNAL_CODECS
-  if (externalCodecs)
-    for (i = 0; i < (UInt32)externalCodecs->Size(); i++)
-    {
-      const CCodecInfoEx &codec = (*externalCodecs)[i];
-      if (methodId == codec.Id)
-      {
-        name = codec.Name;
-        return true;
-      }
-    }
-  #endif
-  return false;
-}
-
-HRESULT CreateCoder(
-  DECL_EXTERNAL_CODECS_LOC_VARS
-  CMethodId methodId,
-  CMyComPtr<ICompressFilter> &filter,
-  CMyComPtr<ICompressCoder> &coder,
-  CMyComPtr<ICompressCoder2> &coder2,
-  bool encode, bool onlyCoder)
-{
-  bool created = false;
-  UInt32 i;
-  for (i = 0; i < g_NumCodecs; i++)
-  {
-    const CCodecInfo &codec = *g_Codecs[i];
-    if (codec.Id == methodId)
-    {
-      if (encode)
-      {
-        if (codec.CreateEncoder)
-        {
-          void *p = codec.CreateEncoder();
-          if (codec.IsFilter) filter = (ICompressFilter *)p;
-          else if (codec.NumInStreams == 1) coder = (ICompressCoder *)p;
-          else coder2 = (ICompressCoder2 *)p;
-          created = (p != 0);
-          break;
-        }
-      }
-      else
-        if (codec.CreateDecoder)
-        {
-          void *p = codec.CreateDecoder();
-          if (codec.IsFilter) filter = (ICompressFilter *)p;
-          else if (codec.NumInStreams == 1) coder = (ICompressCoder *)p;
-          else coder2 = (ICompressCoder2 *)p;
-          created = (p != 0);
-          break;
-        }
-    }
-  }
-
-  #ifdef EXTERNAL_CODECS
-  if (!created && externalCodecs)
-    for (i = 0; i < (UInt32)externalCodecs->Size(); i++)
-    {
-      const CCodecInfoEx &codec = (*externalCodecs)[i];
-      if (codec.Id == methodId)
-      {
-        if (encode)
-        {
-          if (codec.EncoderIsAssigned)
-          {
-            if (codec.IsSimpleCodec())
-            {
-              HRESULT result = codecsInfo->CreateEncoder(i, &IID_ICompressCoder, (void **)&coder);
-              if (result != S_OK && result != E_NOINTERFACE && result != CLASS_E_CLASSNOTAVAILABLE)
-                return result;
-              if (!coder)
-              {
-                RINOK(codecsInfo->CreateEncoder(i, &IID_ICompressFilter, (void **)&filter));
-              }
-            }
-            else
-            {
-              RINOK(codecsInfo->CreateEncoder(i, &IID_ICompressCoder2, (void **)&coder2));
-            }
-            break;
-          }
-        }
-        else
-          if (codec.DecoderIsAssigned)
-          {
-            if (codec.IsSimpleCodec())
-            {
-              HRESULT result = codecsInfo->CreateDecoder(i, &IID_ICompressCoder, (void **)&coder);
-              if (result != S_OK && result != E_NOINTERFACE && result != CLASS_E_CLASSNOTAVAILABLE)
-                return result;
-              if (!coder)
-              {
-                RINOK(codecsInfo->CreateDecoder(i, &IID_ICompressFilter, (void **)&filter));
-              }
-            }
-            else
-            {
-              RINOK(codecsInfo->CreateDecoder(i, &IID_ICompressCoder2, (void **)&coder2));
-            }
-            break;
-          }
-      }
-    }
-  #endif
-
-  if (onlyCoder && filter)
-  {
-    CFilterCoder *coderSpec = new CFilterCoder;
-    coder = coderSpec;
-    coderSpec->Filter = filter;
-  }
-  return S_OK;
-}
-
-HRESULT CreateCoder(
-  DECL_EXTERNAL_CODECS_LOC_VARS
-  CMethodId methodId,
-  CMyComPtr<ICompressCoder> &coder,
-  CMyComPtr<ICompressCoder2> &coder2,
-  bool encode)
-{
-  CMyComPtr<ICompressFilter> filter;
-  return CreateCoder(
-    EXTERNAL_CODECS_LOC_VARS
-    methodId,
-    filter, coder, coder2, encode, true);
-}
-
-HRESULT CreateCoder(
-  DECL_EXTERNAL_CODECS_LOC_VARS
-  CMethodId methodId,
-  CMyComPtr<ICompressCoder> &coder, bool encode)
-{
-  CMyComPtr<ICompressFilter> filter;
-  CMyComPtr<ICompressCoder2> coder2;
-  return CreateCoder(
-    EXTERNAL_CODECS_LOC_VARS
-    methodId,
-    coder, coder2, encode);
-}
-
-HRESULT CreateFilter(
-  DECL_EXTERNAL_CODECS_LOC_VARS
-  CMethodId methodId,
-  CMyComPtr<ICompressFilter> &filter,
-  bool encode)
-{
-  CMyComPtr<ICompressCoder> coder;
-  CMyComPtr<ICompressCoder2> coder2;
-  return CreateCoder(
-    EXTERNAL_CODECS_LOC_VARS
-    methodId,
-    filter, coder, coder2, encode, false);
-}