C++ CPDF_Dictionary::GetStringFor方法代码示例

std::vector<CPDF_Object*> CPDF_ActionFields::GetAllFields() const {
  std::vector<CPDF_Object*> fields;
  if (!m_pAction)
    return fields;

  CPDF_Dictionary* pDict = m_pAction->GetDict();
  if (!pDict)
    return fields;

  CFX_ByteString csType = pDict->GetStringFor("S");
  CPDF_Object* pFields;
  if (csType == "Hide")
    pFields = pDict->GetDirectObjectFor("T");
  else
    pFields = pDict->GetArrayFor("Fields");

  if (!pFields)
    return fields;

  if (pFields->IsDictionary() || pFields->IsString()) {
    fields.push_back(pFields);
  } else if (CPDF_Array* pArray = pFields->AsArray()) {
    for (size_t i = 0; i < pArray->GetCount(); ++i) {
      CPDF_Object* pObj = pArray->GetDirectObjectAt(i);
      if (pObj)
        fields.push_back(pObj);
    }
  }
  return fields;
}

void CPDF_FormField::LoadDA() {
  CPDF_Dictionary* pFormDict = m_pForm->m_pFormDict;
  if (!pFormDict)
    return;

  CFX_ByteString DA;
  if (CPDF_Object* pObj = FPDF_GetFieldAttr(m_pDict, "DA"))
    DA = pObj->GetString();

  if (DA.IsEmpty())
    DA = pFormDict->GetStringFor("DA");

  if (DA.IsEmpty())
    return;

  CPDF_Dictionary* pDR = pFormDict->GetDictFor("DR");
  if (!pDR)
    return;

  CPDF_Dictionary* pFont = pDR->GetDictFor("Font");
  if (!pFont)
    return;

  CPDF_SimpleParser syntax(DA.AsStringC());
  syntax.FindTagParamFromStart("Tf", 2);
  CFX_ByteString font_name(syntax.GetWord());
  CPDF_Dictionary* pFontDict = pFont->GetDictFor(font_name);
  if (!pFontDict)
    return;

  m_pFont = m_pForm->m_pDocument->LoadFont(pFontDict);
  m_FontSize = FX_atof(syntax.GetWord());
}

bool CPDF_InterForm::CheckRequiredFields(
    const std::vector<CPDF_FormField*>* fields,
    bool bIncludeOrExclude) const {
  size_t nCount = m_pFieldTree->m_Root.CountFields();
  for (size_t i = 0; i < nCount; ++i) {
    CPDF_FormField* pField = m_pFieldTree->m_Root.GetFieldAtIndex(i);
    if (!pField)
      continue;

    int32_t iType = pField->GetType();
    if (iType == CPDF_FormField::PushButton ||
        iType == CPDF_FormField::CheckBox || iType == CPDF_FormField::ListBox) {
      continue;
    }
    uint32_t dwFlags = pField->GetFieldFlags();
    // TODO(thestig): Look up these magic numbers and add constants for them.
    if (dwFlags & FORMFLAG_NOEXPORT)
      continue;

    bool bFind = true;
    if (fields)
      bFind = pdfium::ContainsValue(*fields, pField);
    if (bIncludeOrExclude == bFind) {
      CPDF_Dictionary* pFieldDict = pField->m_pDict;
      if ((dwFlags & FORMFLAG_REQUIRED) != 0 &&
          pFieldDict->GetStringFor("V").IsEmpty()) {
        return false;
      }
    }
  }
  return true;
}

CPDF_Object* CPDF_ActionFields::GetField(size_t iIndex) const {
  if (!m_pAction)
    return nullptr;

  CPDF_Dictionary* pDict = m_pAction->GetDict();
  if (!pDict)
    return nullptr;

  CFX_ByteString csType = pDict->GetStringFor("S");
  CPDF_Object* pFields = nullptr;
  if (csType == "Hide")
    pFields = pDict->GetDirectObjectFor("T");
  else
    pFields = pDict->GetArrayFor("Fields");

  if (!pFields)
    return nullptr;

  CPDF_Object* pFindObj = nullptr;
  if (pFields->IsDictionary() || pFields->IsString()) {
    if (iIndex == 0)
      pFindObj = pFields;
  } else if (CPDF_Array* pArray = pFields->AsArray()) {
    pFindObj = pArray->GetDirectObjectAt(iIndex);
  }
  return pFindObj;
}

size_t CPDF_ActionFields::GetFieldsCount() const {
  if (!m_pAction)
    return 0;

  CPDF_Dictionary* pDict = m_pAction->GetDict();
  if (!pDict)
    return 0;

  CFX_ByteString csType = pDict->GetStringFor("S");
  CPDF_Object* pFields = nullptr;
  if (csType == "Hide")
    pFields = pDict->GetDirectObjectFor("T");
  else
    pFields = pDict->GetArrayFor("Fields");

  if (!pFields)
    return 0;
  if (pFields->IsDictionary())
    return 1;
  if (pFields->IsString())
    return 1;
  if (CPDF_Array* pArray = pFields->AsArray())
    return pArray->GetCount();
  return 0;
}

bool CPDF_OCContext::LoadOCGStateFromConfig(
    const ByteString& csConfig,
    const CPDF_Dictionary* pOCGDict) const {
  CPDF_Dictionary* pConfig = GetConfig(m_pDocument.Get(), pOCGDict);
  if (!pConfig)
    return true;

  bool bState = pConfig->GetStringFor("BaseState", "ON") != "OFF";
  CPDF_Array* pArray = pConfig->GetArrayFor("ON");
  if (pArray) {
    if (FindGroup(pArray, pOCGDict) >= 0)
      bState = true;
  }
  pArray = pConfig->GetArrayFor("OFF");
  if (pArray) {
    if (FindGroup(pArray, pOCGDict) >= 0)
      bState = false;
  }
  pArray = pConfig->GetArrayFor("AS");
  if (!pArray)
    return bState;

  ByteString csFind = csConfig + "State";
  for (size_t i = 0; i < pArray->size(); i++) {
    CPDF_Dictionary* pUsage = pArray->GetDictAt(i);
    if (!pUsage)
      continue;

    if (pUsage->GetStringFor("Event", "View") != csConfig)
      continue;

    CPDF_Array* pOCGs = pUsage->GetArrayFor("OCGs");
    if (!pOCGs)
      continue;

    if (FindGroup(pOCGs, pOCGDict) < 0)
      continue;

    CPDF_Dictionary* pState = pUsage->GetDictFor(csConfig);
    if (!pState)
      continue;

    bState = pState->GetStringFor(csFind) != "OFF";
  }
  return bState;
}

FX_BOOL CPDF_PageOrganizer::PDFDocInit(CPDF_Document* pDestPDFDoc,
                                       CPDF_Document* pSrcPDFDoc) {
  if (!pDestPDFDoc || !pSrcPDFDoc)
    return FALSE;

  CPDF_Dictionary* pNewRoot = pDestPDFDoc->GetRoot();
  if (!pNewRoot)
    return FALSE;

  CPDF_Dictionary* DInfoDict = pDestPDFDoc->GetInfo();
  if (!DInfoDict)
    return FALSE;

  CFX_ByteString producerstr;
  producerstr.Format("PDFium");
  DInfoDict->SetFor("Producer", new CPDF_String(producerstr, FALSE));

  CFX_ByteString cbRootType = pNewRoot->GetStringFor("Type", "");
  if (cbRootType.IsEmpty())
    pNewRoot->SetFor("Type", new CPDF_Name("Catalog"));

  CPDF_Object* pElement = pNewRoot->GetObjectFor("Pages");
  CPDF_Dictionary* pNewPages =
      pElement ? ToDictionary(pElement->GetDirect()) : nullptr;
  if (!pNewPages) {
    pNewPages = new CPDF_Dictionary(pDestPDFDoc->GetByteStringPool());
    pNewRoot->SetReferenceFor("Pages", pDestPDFDoc,
                              pDestPDFDoc->AddIndirectObject(pNewPages));
  }

  CFX_ByteString cbPageType = pNewPages->GetStringFor("Type", "");
  if (cbPageType == "") {
    pNewPages->SetFor("Type", new CPDF_Name("Pages"));
  }

  if (!pNewPages->GetArrayFor("Kids")) {
    pNewPages->SetIntegerFor("Count", 0);
    pNewPages->SetReferenceFor("Kids", pDestPDFDoc,
                               pDestPDFDoc->AddIndirectObject(new CPDF_Array));
  }

  return TRUE;
}

void CPDFXFA_DocEnvironment::GetTitle(CXFA_FFDoc* hDoc,
                                      CFX_WideString& wsTitle) {
  if (hDoc != m_pContext->GetXFADoc() || !m_pContext->GetPDFDoc())
    return;

  CPDF_Dictionary* pInfoDict = m_pContext->GetPDFDoc()->GetInfo();
  if (!pInfoDict)
    return;

  CFX_ByteString csTitle = pInfoDict->GetStringFor("Title");
  wsTitle = wsTitle.FromLocal(csTitle.GetBuffer(csTitle.GetLength()));
  csTitle.ReleaseBuffer(csTitle.GetLength());
}

void CPDF_LinkList::LoadPageLinks(CPDF_Page* pPage,
                                  std::vector<CPDF_Dictionary*>* pList) {
  CPDF_Array* pAnnotList = pPage->m_pFormDict->GetArrayFor("Annots");
  if (!pAnnotList)
    return;

  for (size_t i = 0; i < pAnnotList->GetCount(); ++i) {
    CPDF_Dictionary* pAnnot = pAnnotList->GetDictAt(i);
    bool add_link = (pAnnot && pAnnot->GetStringFor("Subtype") == "Link");
    // Add non-links as nullptrs to preserve z-order.
    pList->push_back(add_link ? pAnnot : nullptr);
  }
}

void CPDF_InterForm::FixPageFields(const CPDF_Page* pPage) {
  CPDF_Dictionary* pPageDict = pPage->m_pFormDict;
  if (!pPageDict)
    return;

  CPDF_Array* pAnnots = pPageDict->GetArrayFor("Annots");
  if (!pAnnots)
    return;

  for (size_t i = 0; i < pAnnots->GetCount(); i++) {
    CPDF_Dictionary* pAnnot = pAnnots->GetDictAt(i);
    if (pAnnot && pAnnot->GetStringFor("Subtype") == "Widget")
      LoadField(pAnnot, 0);
  }
}

CFX_ByteString CPDF_Action::GetURI(CPDF_Document* pDoc) const {
  CFX_ByteString csURI;
  if (!m_pDict)
    return csURI;
  if (m_pDict->GetStringFor("S") != "URI")
    return csURI;

  csURI = m_pDict->GetStringFor("URI");
  CPDF_Dictionary* pRoot = pDoc->GetRoot();
  CPDF_Dictionary* pURI = pRoot->GetDictFor("URI");
  if (pURI) {
    if (csURI.Find(":", 0) < 1)
      csURI = pURI->GetStringFor("Base") + csURI;
  }
  return csURI;
}

static FX_BOOL LoadCryptInfo(CPDF_Dictionary* pEncryptDict,
                             const CFX_ByteString& name,
                             int& cipher,
                             int& keylen) {
  int Version = pEncryptDict->GetIntegerFor("V");
  cipher = FXCIPHER_RC4;
  keylen = 0;
  if (Version >= 4) {
    CPDF_Dictionary* pCryptFilters = pEncryptDict->GetDictFor("CF");
    if (!pCryptFilters) {
      return FALSE;
    }
    if (name == "Identity") {
      cipher = FXCIPHER_NONE;
    } else {
      CPDF_Dictionary* pDefFilter = pCryptFilters->GetDictFor(name);
      if (!pDefFilter) {
        return FALSE;
      }
      int nKeyBits = 0;
      if (Version == 4) {
        nKeyBits = pDefFilter->GetIntegerFor("Length", 0);
        if (nKeyBits == 0) {
          nKeyBits = pEncryptDict->GetIntegerFor("Length", 128);
        }
      } else {
        nKeyBits = pEncryptDict->GetIntegerFor("Length", 256);
      }
      if (nKeyBits < 40) {
        nKeyBits *= 8;
      }
      keylen = nKeyBits / 8;
      CFX_ByteString cipher_name = pDefFilter->GetStringFor("CFM");
      if (cipher_name == "AESV2" || cipher_name == "AESV3") {
        cipher = FXCIPHER_AES;
      }
    }
  } else {
    keylen = Version > 1 ? pEncryptDict->GetIntegerFor("Length", 40) / 8 : 5;
  }
  if (keylen > 32 || keylen < 0) {
    return FALSE;
  }
  return TRUE;
}

void CPDF_PageObjectHolder::LoadTransInfo() {
  if (!m_pFormDict) {
    return;
  }
  CPDF_Dictionary* pGroup = m_pFormDict->GetDictFor("Group");
  if (!pGroup) {
    return;
  }
  if (pGroup->GetStringFor("S") != "Transparency") {
    return;
  }
  m_Transparency |= PDFTRANS_GROUP;
  if (pGroup->GetIntegerFor("I")) {
    m_Transparency |= PDFTRANS_ISOLATED;
  }
  if (pGroup->GetIntegerFor("K")) {
    m_Transparency |= PDFTRANS_KNOCKOUT;
  }
}

FX_BOOL CPDFSDK_InterForm::FDFToURLEncodedData(uint8_t*& pBuf,
                                               FX_STRSIZE& nBufSize) {
  CFDF_Document* pFDF = CFDF_Document::ParseMemory(pBuf, nBufSize);
  if (!pFDF)
    return TRUE;

  CPDF_Dictionary* pMainDict = pFDF->GetRoot()->GetDictFor("FDF");
  if (!pMainDict)
    return FALSE;

  CPDF_Array* pFields = pMainDict->GetArrayFor("Fields");
  if (!pFields)
    return FALSE;

  CFX_ByteTextBuf fdfEncodedData;
  for (uint32_t i = 0; i < pFields->GetCount(); i++) {
    CPDF_Dictionary* pField = pFields->GetDictAt(i);
    if (!pField)
      continue;
    CFX_WideString name;
    name = pField->GetUnicodeTextFor("T");
    CFX_ByteString name_b = CFX_ByteString::FromUnicode(name);
    CFX_ByteString csBValue = pField->GetStringFor("V");
    CFX_WideString csWValue = PDF_DecodeText(csBValue);
    CFX_ByteString csValue_b = CFX_ByteString::FromUnicode(csWValue);

    fdfEncodedData << name_b.GetBuffer(name_b.GetLength());
    name_b.ReleaseBuffer();
    fdfEncodedData << "=";
    fdfEncodedData << csValue_b.GetBuffer(csValue_b.GetLength());
    csValue_b.ReleaseBuffer();
    if (i != pFields->GetCount() - 1)
      fdfEncodedData << "&";
  }

  nBufSize = fdfEncodedData.GetLength();
  pBuf = FX_Alloc(uint8_t, nBufSize);
  FXSYS_memcpy(pBuf, fdfEncodedData.GetBuffer(), nBufSize);
  return TRUE;
}

int ParserAnnots(CPDF_Document* pSourceDoc,
                 CPDF_Dictionary* pPageDic,
                 CPDF_RectArray* pRectArray,
                 CPDF_ObjectArray* pObjectArray,
                 int nUsage) {
  if (!pSourceDoc || !pPageDic)
    return FLATTEN_FAIL;

  GetContentsRect(pSourceDoc, pPageDic, pRectArray);
  CPDF_Array* pAnnots = pPageDic->GetArrayFor("Annots");
  if (!pAnnots)
    return FLATTEN_NOTHINGTODO;

  uint32_t dwSize = pAnnots->GetCount();
  for (int i = 0; i < (int)dwSize; i++) {
    CPDF_Dictionary* pAnnotDic = ToDictionary(pAnnots->GetDirectObjectAt(i));
    if (!pAnnotDic)
      continue;

    CFX_ByteString sSubtype = pAnnotDic->GetStringFor("Subtype");
    if (sSubtype == "Popup")
      continue;

    int nAnnotFlag = pAnnotDic->GetIntegerFor("F");
    if (nAnnotFlag & ANNOTFLAG_HIDDEN)
      continue;

    if (nUsage == FLAT_NORMALDISPLAY) {
      if (nAnnotFlag & ANNOTFLAG_INVISIBLE)
        continue;

      ParserStream(pPageDic, pAnnotDic, pRectArray, pObjectArray);
    } else {
      if (nAnnotFlag & ANNOTFLAG_PRINT)
        ParserStream(pPageDic, pAnnotDic, pRectArray, pObjectArray);
    }
  }
  return FLATTEN_SUCCESS;
}