bool isTgaType(BasicIo& iIo, bool /*advance*/)
{
// not all TARGA files have a signature string, so first just try to match the file name extension
#ifdef EXV_UNICODE_PATH
std::wstring wpath = iIo.wpath();
if( wpath.rfind(EXV_WIDEN(".tga")) != std::wstring::npos
|| wpath.rfind(EXV_WIDEN(".TGA")) != std::wstring::npos) {
return true;
}
#else
std::string path = iIo.path();
if( path.rfind(".tga") != std::string::npos
|| path.rfind(".TGA") != std::string::npos) {
return true;
}
#endif
byte buf[26];
long curPos = iIo.tell();
iIo.seek(-26, BasicIo::end);
if (iIo.error() || iIo.eof())
{
return false;
}
iIo.read(buf, sizeof(buf));
if (iIo.error())
{
return false;
}
// some TARGA files, but not all, have a signature string at the end
bool matched = (memcmp(buf + 8, "TRUEVISION-XFILE", 16) == 0);
iIo.seek(curPos, BasicIo::beg);
return matched;
}
std::wstring MemIo::wpath() const
{
return EXV_WIDEN("MemIo");
}
