uint32_t CPDF_CIDFont::CharCodeFromUnicode(FX_WCHAR unicode) const {
uint32_t charcode = CPDF_Font::CharCodeFromUnicode(unicode);
if (charcode)
return charcode;
switch (m_pCMap->m_Coding) {
case CIDCODING_UNKNOWN:
return 0;
case CIDCODING_UCS2:
case CIDCODING_UTF16:
return unicode;
case CIDCODING_CID: {
if (!m_pCID2UnicodeMap || !m_pCID2UnicodeMap->IsLoaded())
return 0;
uint32_t CID = 0;
while (CID < 65536) {
FX_WCHAR this_unicode =
m_pCID2UnicodeMap->UnicodeFromCID(static_cast<uint16_t>(CID));
if (this_unicode == unicode)
return CID;
CID++;
}
break;
}
}
if (unicode < 0x80)
return static_cast<uint32_t>(unicode);
if (m_pCMap->m_Coding == CIDCODING_CID)
return 0;
#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
uint8_t buffer[32];
int ret = FXSYS_WideCharToMultiByte(
g_CharsetCPs[m_pCMap->m_Coding], 0, &unicode, 1,
reinterpret_cast<char*>(buffer), 4, nullptr, nullptr);
if (ret == 1)
return buffer[0];
if (ret == 2)
return buffer[0] * 256 + buffer[1];
#else
if (m_pCMap->m_pEmbedMap) {
return EmbeddedCharcodeFromUnicode(m_pCMap->m_pEmbedMap, m_pCMap->m_Charset,
unicode);
}
#endif
return 0;
}
CFX_ByteString CharFromUnicodeAlt(FX_WCHAR unicode, int destcp, FX_LPCSTR defchar)
{
if (destcp == 0) {
if (unicode < 0x80) {
return CFX_ByteString((char)unicode);
}
FX_LPCSTR altstr = FCS_GetAltStr(unicode);
if (altstr) {
return CFX_ByteString(altstr, -1);
}
return CFX_ByteString(defchar, -1);
}
FX_BOOL bDef = FALSE;
char buf[10];
int ret = FXSYS_WideCharToMultiByte(destcp, 0, (wchar_t*)&unicode, 1, buf, 10, NULL, &bDef);
if (ret && !bDef) {
return CFX_ByteString(buf, ret);
}
FX_LPCSTR altstr = FCS_GetAltStr(unicode);
if (altstr) {
return CFX_ByteString(altstr, -1);
}
return CFX_ByteString(defchar, -1);
}
