/* lw-support/src/lib/Exceptions/BadString.cpp
 *
 *  (c)2005, Laurence Withers. Released under the GNU GPL. See file
 *  COPYING for more information / terms of license.
*/

namespace lw {



std::wstring BadSourceChar::buildDesc(const char* seqStart,
    const char* seqEnd, int seqOffset, const std::wstring& encodingName,
    const std::wstring& reason)
{
    std::wostringstream o;

    o << L"Error parsing a string. Details:\n"
         L"  Encoding    : " << encodingName << L"\n"
         L"  Reason      : " << reason << L"\n"
         L"  Byte offset : " << seqOffset << L"\n"
         L"  Bad sequence: ";
    o << std::hex << std::setfill(L'0');
    for(; seqStart != seqEnd; ++seqStart)
        o << std::setw(2) << (uint)(uint8_t)(*seqStart);

    return o.str();
}


BadSourceChar::BadSourceChar(const char* seqStart, const char* seqEnd,
    int seqOffset, const std::wstring& encodingName, const std::wstring& reason)
    : BadString(buildDesc(
          seqStart, seqEnd, seqOffset, encodingName, reason)),
      byteSeq(seqStart, seqEnd), seqOffset(seqOffset),
      encoding(encodingName), reason(reason)
{
}



std::wstring CannotConvertChar::buildDesc(wchar_t srcChar, int seqOffset,
    const std::wstring& srcEnc, const std::wstring& destEnc)
{
    std::wostringstream o;

    o << L"Error converting a string. Details:\n"
         L"  Source encoding     : " << srcEnc << L"\n"
         L"  Destination encoding: " << destEnc << L"\n"
         L"  Byte offset         : " << seqOffset << L"\n"
         L"  Source character    : 0x" << std::hex << uint(srcChar)
      << L", ``" << srcChar << L"''.";

    return o.str();
}



CannotConvertChar::CannotConvertChar(wchar_t srcChar, int seqOffset,
    const std::wstring& srcEnc, const std::wstring& destEnc)
  : BadString(buildDesc(srcChar, seqOffset, srcEnc, destEnc)),
    srcChar(srcChar), seqOffset(seqOffset), srcEnc(srcEnc), destEnc(destEnc)
{
}



}