C++ CPDF_Dictionary::Release方法代码示例

void CFDF_Document::ParseStream(IFX_FileRead *pFile, FX_BOOL bOwnFile)
{
    m_pFile = pFile;
    m_bOwnFile = bOwnFile;
    CPDF_SyntaxParser parser;
    parser.InitParser(m_pFile, 0);
    while (1) {
        FX_BOOL bNumber;
        CFX_ByteString word = parser.GetNextWord(bNumber);
        if (bNumber) {
            FX_DWORD objnum = FXSYS_atoi(word);
            word = parser.GetNextWord(bNumber);
            if (!bNumber) {
                break;
            }
            word = parser.GetNextWord(bNumber);
            if (word != FX_BSTRC("obj")) {
                break;
            }
            CPDF_Object* pObj = parser.GetObject(this, objnum, 0, FALSE);
            if (pObj == NULL) {
                break;
            }
            InsertIndirectObject(objnum, pObj);
            word = parser.GetNextWord(bNumber);
            if (word != FX_BSTRC("endobj")) {
                break;
            }
        } else {
            if (word != FX_BSTRC("trailer")) {
                break;
            }
            CPDF_Dictionary* pMainDict = (CPDF_Dictionary*)parser.GetObject(this, 0, 0, 0);
            if (pMainDict == NULL || pMainDict->GetType() != PDFOBJ_DICTIONARY) {
                break;
            }
            m_pRootDict = pMainDict->GetDict(FX_BSTRC("Root"));
            pMainDict->Release();
            break;
        }
    }
}

void CPDF_StreamContentParser::Handle_BeginImage()
{
    FX_FILESIZE savePos = m_pSyntax->GetPos();
    CPDF_Dictionary* pDict = CPDF_Dictionary::Create();
    while (1) {
        CPDF_StreamParser::SyntaxType type = m_pSyntax->ParseNextElement();
        if (type == CPDF_StreamParser::Keyword) {
            CFX_ByteString bsKeyword(m_pSyntax->GetWordBuf(), m_pSyntax->GetWordSize());
            if (bsKeyword != FX_BSTRC("ID")) {
                m_pSyntax->SetPos(savePos);
                pDict->Release();
                return;
            }
        }
        if (type != CPDF_StreamParser::Name) {
            break;
        }
        CFX_ByteString key((const FX_CHAR*)m_pSyntax->GetWordBuf() + 1, m_pSyntax->GetWordSize() - 1);
        CPDF_Object* pObj = m_pSyntax->ReadNextObject();
        if (!key.IsEmpty()) {
            pDict->SetAt(key, pObj, m_pDocument);
        } else if (pObj) {
            pObj->Release();
        }
    }
    _PDF_ReplaceAbbr(pDict);
    CPDF_Object* pCSObj = NULL;
    if (pDict->KeyExist(FX_BSTRC("ColorSpace"))) {
        pCSObj = pDict->GetElementValue(FX_BSTRC("ColorSpace"));
        if (pCSObj->GetType() == PDFOBJ_NAME) {
            CFX_ByteString name = pCSObj->GetString();
            if (name != FX_BSTRC("DeviceRGB") && name != FX_BSTRC("DeviceGray") && name != FX_BSTRC("DeviceCMYK")) {
                pCSObj = FindResourceObj(FX_BSTRC("ColorSpace"), name);
                if (pCSObj && !pCSObj->GetObjNum()) {
                    pCSObj = pCSObj->Clone();
                    pDict->SetAt(FX_BSTRC("ColorSpace"), pCSObj, m_pDocument);
                }
            }
        }
    }
    CPDF_Stream* pStream = m_pSyntax->ReadInlineStream(m_pDocument, pDict, pCSObj, m_Options.m_bDecodeInlineImage);
    while (1) {
        CPDF_StreamParser::SyntaxType type = m_pSyntax->ParseNextElement();
        if (type == CPDF_StreamParser::EndOfData) {
            break;
        }
        if (type != CPDF_StreamParser::Keyword) {
            continue;
        }
        if (m_pSyntax->GetWordSize() == 2 && m_pSyntax->GetWordBuf()[0] == 'E' &&
                m_pSyntax->GetWordBuf()[1] == 'I') {
            break;
        }
    }
    if (m_Options.m_bTextOnly) {
        if (pStream) {
            pStream->Release();
        } else {
            pDict->Release();
        }
        return;
    }
    pDict->SetAtName(FX_BSTRC("Subtype"), FX_BSTRC("Image"));
    CPDF_ImageObject *pImgObj = AddImage(pStream, NULL, TRUE);
    if (!pImgObj) {
        if (pStream) {
            pStream->Release();
        } else {
            pDict->Release();
        }
    }
}

CPDF_Object* CPDF_StreamParser::ReadNextObject(FX_BOOL bAllowNestedArray, FX_BOOL bInArray)
{
    FX_BOOL bIsNumber;
    GetNextWord(bIsNumber);
    if (m_WordSize == 0) {
        return NULL;
    }
    if (bIsNumber) {
        m_WordBuffer[m_WordSize] = 0;
        return CPDF_Number::Create(CFX_ByteStringC(m_WordBuffer, m_WordSize));
    }
    int first_char = m_WordBuffer[0];
    if (first_char == '/') {
        return CPDF_Name::Create(PDF_NameDecode(CFX_ByteStringC(m_WordBuffer + 1, m_WordSize - 1)));
    }
    if (first_char == '(') {
        return CPDF_String::Create(ReadString());
    }
    if (first_char == '<') {
        if (m_WordSize == 1) {
            return CPDF_String::Create(ReadHexString(), TRUE);
        }
        CPDF_Dictionary* pDict = CPDF_Dictionary::Create();
        while (1) {
            GetNextWord(bIsNumber);
            if (m_WordSize == 0) {
                pDict->Release();
                return NULL;
            }
            if (m_WordSize == 2 && m_WordBuffer[0] == '>') {
                break;
            }
            if (m_WordBuffer[0] != '/') {
                pDict->Release();
                return NULL;
            }
            CFX_ByteString key = PDF_NameDecode(CFX_ByteStringC(m_WordBuffer + 1, m_WordSize - 1));
            CPDF_Object* pObj = ReadNextObject(TRUE);
            if (pObj == NULL) {
                if (pDict) {
                    pDict->Release();
                }
                return NULL;
            }
            if (!key.IsEmpty()) {
                pDict->SetAt(key, pObj);
            } else {
                pObj->Release();
            }
        }
        return pDict;
    }
    if (first_char == '[') {
        if (!bAllowNestedArray && bInArray) {
            return NULL;
        }
        CPDF_Array* pArray = CPDF_Array::Create();
        while (1) {
            CPDF_Object* pObj = ReadNextObject(bAllowNestedArray, TRUE);
            if (pObj == NULL) {
                if (m_WordSize == 0 || m_WordBuffer[0] == ']') {
                    return pArray;
                }
                if (m_WordBuffer[0] == '[') {
                    continue;
                }
            } else {
                pArray->Add(pObj);
            }
        }
    }
    if (m_WordSize == 4) {
        if (*(FX_DWORD*)m_WordBuffer == FXDWORD_TRUE) {
            return CPDF_Boolean::Create(TRUE);
        }
        if (*(FX_DWORD*)m_WordBuffer == FXDWORD_NULL) {
            return CPDF_Null::Create();
        }
    } else if (m_WordSize == 5) {
        if (*(FX_DWORD*)m_WordBuffer == FXDWORD_FALS && m_WordBuffer[4] == 'e') {
            return CPDF_Boolean::Create(FALSE);
        }
    }
    return NULL;
}

CFDF_Document* CPDF_InterForm::ExportToFDF(
    const CFX_WideStringC& pdf_path,
    const std::vector<CPDF_FormField*>& fields,
    bool bIncludeOrExclude,
    bool bSimpleFileSpec) const {
  CFDF_Document* pDoc = CFDF_Document::CreateNewDoc();
  if (pDoc == NULL) {
    return NULL;
  }
  CPDF_Dictionary* pMainDict = pDoc->GetRoot()->GetDict("FDF");
  if (!pdf_path.IsEmpty()) {
    if (bSimpleFileSpec) {
      CFX_WideString wsFilePath = FILESPEC_EncodeFileName(pdf_path);
      pMainDict->SetAtString(FX_BSTRC("F"),
                             CFX_ByteString::FromUnicode(wsFilePath));
      pMainDict->SetAtString(FX_BSTRC("UF"), PDF_EncodeText(wsFilePath));
    } else {
      CPDF_FileSpec filespec;
      filespec.SetFileName(pdf_path);
      pMainDict->SetAt("F", static_cast<CPDF_Object*>(filespec));
    }
  }
  CPDF_Array* pFields = CPDF_Array::Create();
  if (pFields == NULL) {
    return NULL;
  }
  pMainDict->SetAt("Fields", pFields);
  int nCount = m_pFieldTree->m_Root.CountFields();
  for (int i = 0; i < nCount; i++) {
    CPDF_FormField* pField = m_pFieldTree->m_Root.GetField(i);
    if (pField == NULL || pField->GetType() == CPDF_FormField::PushButton) {
      continue;
    }
    FX_DWORD dwFlags = pField->GetFieldFlags();
    if (dwFlags & 0x04)
      continue;

    auto it = std::find(fields.begin(), fields.end(), pField);
    if (bIncludeOrExclude == (it != fields.end())) {
      if ((dwFlags & 0x02) != 0 && pField->m_pDict->GetString("V").IsEmpty())
        continue;

      CFX_WideString fullname = GetFullName(pField->GetFieldDict());
      CPDF_Dictionary* pFieldDict = CPDF_Dictionary::Create();
      if (!pFieldDict)
        return nullptr;

      CPDF_String* pString = CPDF_String::Create(fullname);
      if (!pString) {
        pFieldDict->Release();
        return nullptr;
      }
      pFieldDict->SetAt("T", pString);
      if (pField->GetType() == CPDF_FormField::CheckBox ||
          pField->GetType() == CPDF_FormField::RadioButton) {
        CFX_WideString csExport = pField->GetCheckValue(FALSE);
        CFX_ByteString csBExport = PDF_EncodeText(csExport);
        CPDF_Object* pOpt = FPDF_GetFieldAttr(pField->m_pDict, "Opt");
        if (pOpt)
          pFieldDict->SetAtString("V", csBExport);
        else
          pFieldDict->SetAtName("V", csBExport);
      } else {
        CPDF_Object* pV = FPDF_GetFieldAttr(pField->m_pDict, "V");
        if (pV)
          pFieldDict->SetAt("V", pV->Clone(TRUE));
      }
      pFields->Add(pFieldDict);
    }
  }
  return pDoc;
}