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ParseProperties.cpp
174 lines (162 loc) · 3.88 KB
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ParseProperties.cpp
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// ParseProperties.cpp
#include "StdAfx.h"
#include "ParseProperties.h"
#include "Common/StringToInt.h"
#include "Common/MyCom.h"
HRESULT ParsePropValue(const UString &name, const PROPVARIANT &prop, UInt32 &resValue)
{
if (prop.vt == VT_UI4)
{
if (!name.IsEmpty())
return E_INVALIDARG;
resValue = prop.ulVal;
}
else if (prop.vt == VT_EMPTY)
{
if(!name.IsEmpty())
{
const wchar_t *start = name;
const wchar_t *end;
UInt64 v = ConvertStringToUInt64(start, &end);
if (end - start != name.Length())
return E_INVALIDARG;
resValue = (UInt32)v;
}
}
else
return E_INVALIDARG;
return S_OK;
}
static const int kLogarithmicSizeLimit = 32;
static const wchar_t kByteSymbol = L'B';
static const wchar_t kKiloByteSymbol = L'K';
static const wchar_t kMegaByteSymbol = L'M';
HRESULT ParsePropDictionaryValue(const UString &srcStringSpec, UInt32 &dicSize)
{
UString srcString = srcStringSpec;
srcString.MakeUpper();
const wchar_t *start = srcString;
const wchar_t *end;
UInt64 number = ConvertStringToUInt64(start, &end);
int numDigits = (int)(end - start);
if (numDigits == 0 || srcString.Length() > numDigits + 1)
return E_INVALIDARG;
if (srcString.Length() == numDigits)
{
if (number >= kLogarithmicSizeLimit)
return E_INVALIDARG;
dicSize = (UInt32)1 << (int)number;
return S_OK;
}
switch (srcString[numDigits])
{
case kByteSymbol:
if (number >= ((UInt64)1 << kLogarithmicSizeLimit))
return E_INVALIDARG;
dicSize = (UInt32)number;
break;
case kKiloByteSymbol:
if (number >= ((UInt64)1 << (kLogarithmicSizeLimit - 10)))
return E_INVALIDARG;
dicSize = (UInt32)(number << 10);
break;
case kMegaByteSymbol:
if (number >= ((UInt64)1 << (kLogarithmicSizeLimit - 20)))
return E_INVALIDARG;
dicSize = (UInt32)(number << 20);
break;
default:
return E_INVALIDARG;
}
return S_OK;
}
HRESULT ParsePropDictionaryValue(const UString &name, const PROPVARIANT &prop, UInt32 &resValue)
{
if (name.IsEmpty())
{
if (prop.vt == VT_UI4)
{
UInt32 logDicSize = prop.ulVal;
if (logDicSize >= 32)
return E_INVALIDARG;
resValue = (UInt32)1 << logDicSize;
return S_OK;
}
if (prop.vt == VT_BSTR)
return ParsePropDictionaryValue(prop.bstrVal, resValue);
return E_INVALIDARG;
}
return ParsePropDictionaryValue(name, resValue);
}
bool StringToBool(const UString &s, bool &res)
{
if (s.IsEmpty() || s.CompareNoCase(L"ON") == 0)
{
res = true;
return true;
}
if (s.CompareNoCase(L"OFF") == 0)
{
res = false;
return true;
}
return false;
}
HRESULT SetBoolProperty(bool &dest, const PROPVARIANT &value)
{
switch(value.vt)
{
case VT_EMPTY:
dest = true;
return S_OK;
/*
case VT_UI4:
dest = (value.ulVal != 0);
break;
*/
case VT_BSTR:
return StringToBool(value.bstrVal, dest) ? S_OK : E_INVALIDARG;
}
return E_INVALIDARG;
}
int ParseStringToUInt32(const UString &srcString, UInt32 &number)
{
const wchar_t *start = srcString;
const wchar_t *end;
UInt64 number64 = ConvertStringToUInt64(start, &end);
if (number64 > 0xFFFFFFFF)
{
number = 0;
return 0;
}
number = (UInt32)number64;
return (int)(end - start);
}
HRESULT ParseMtProp(const UString &name, const PROPVARIANT &prop, UInt32 defaultNumThreads, UInt32 &numThreads)
{
if (name.IsEmpty())
{
switch(prop.vt)
{
case VT_UI4:
numThreads = prop.ulVal;
break;
default:
{
bool val;
RINOK(SetBoolProperty(val, prop));
numThreads = (val ? defaultNumThreads : 1);
break;
}
}
}
else
{
UInt32 number;
int index = ParseStringToUInt32(name, number);
if (index != name.Length())
return E_INVALIDARG;
numThreads = number;
}
return S_OK;
}