Example #1
0
void CPDF_Font::LoadPDFEncoding(CPDF_Object* pEncoding,
                                int& iBaseEncoding,
                                std::vector<CFX_ByteString>* pCharNames,
                                bool bEmbedded,
                                bool bTrueType) {
  if (!pEncoding) {
    if (m_BaseFont == "Symbol") {
      iBaseEncoding = bTrueType ? PDFFONT_ENCODING_MS_SYMBOL
                                : PDFFONT_ENCODING_ADOBE_SYMBOL;
    } else if (!bEmbedded && iBaseEncoding == PDFFONT_ENCODING_BUILTIN) {
      iBaseEncoding = PDFFONT_ENCODING_WINANSI;
    }
    return;
  }
  if (pEncoding->IsName()) {
    if (iBaseEncoding == PDFFONT_ENCODING_ADOBE_SYMBOL ||
        iBaseEncoding == PDFFONT_ENCODING_ZAPFDINGBATS) {
      return;
    }
    if ((m_Flags & PDFFONT_SYMBOLIC) && m_BaseFont == "Symbol") {
      if (!bTrueType) {
        iBaseEncoding = PDFFONT_ENCODING_ADOBE_SYMBOL;
      }
      return;
    }
    CFX_ByteString bsEncoding = pEncoding->GetString();
    if (bsEncoding.Compare("MacExpertEncoding") == 0) {
      bsEncoding = "WinAnsiEncoding";
    }
    GetPredefinedEncoding(bsEncoding, &iBaseEncoding);
    return;
  }

  CPDF_Dictionary* pDict = pEncoding->AsDictionary();
  if (!pDict)
    return;

  if (iBaseEncoding != PDFFONT_ENCODING_ADOBE_SYMBOL &&
      iBaseEncoding != PDFFONT_ENCODING_ZAPFDINGBATS) {
    CFX_ByteString bsEncoding = pDict->GetStringFor("BaseEncoding");
    if (bsEncoding.Compare("MacExpertEncoding") == 0 && bTrueType) {
      bsEncoding = "WinAnsiEncoding";
    }
    GetPredefinedEncoding(bsEncoding, &iBaseEncoding);
  }
  if ((!bEmbedded || bTrueType) && iBaseEncoding == PDFFONT_ENCODING_BUILTIN)
    iBaseEncoding = PDFFONT_ENCODING_STANDARD;

  CPDF_Array* pDiffs = pDict->GetArrayFor("Differences");
  if (!pDiffs)
    return;

  pCharNames->resize(256);
  uint32_t cur_code = 0;
  for (uint32_t i = 0; i < pDiffs->GetCount(); i++) {
    CPDF_Object* pElement = pDiffs->GetDirectObjectAt(i);
    if (!pElement)
      continue;

    if (CPDF_Name* pName = pElement->AsName()) {
      if (cur_code < 256)
        (*pCharNames)[cur_code] = pName->GetString();
      cur_code++;
    } else {
      cur_code = pElement->GetInteger();
    }
  }
}