abiword架构分析笔记

源码版本：2.4.6

打开文件文件操作：

响应函数：UT_Error AP_Frame::loadDocument(const char * szFilename, int ieft, bool createNew)

加载操作：loadDocument::errorCode =  _loadDocument(szFilename, static_cast<IEFileType>(ieft), createNew);

打开word文件代码段

UT_Error PD_Document::readFromFile(const char * szFilename, int ieft,
const char * impProps)

UT_Error PD_Document::readFromFile(const char * szFilename, int ieft,
                                   const char * impProps)
{
    if (!szFilename || !*szFilename)
    {
        UT_DEBUGMSG(("PD_Document::readFromFile -- invalid filename
"));
        return UT_INVALIDFILENAME;
    }

    if ( !UT_isRegularFile(szFilename) )
    {
      UT_DEBUGMSG (("PD_Document::readFromFile -- file (%s) is not plain file
",szFilename));
      return UT_INVALIDFILENAME;
    }

    if (!UT_fileSize(szFilename))
    {
        UT_DEBUGMSG(("PD_Document::readFromFile -- file (%s) is empty
",szFilename));
        return UT_IE_BOGUSDOCUMENT;
    }
    
    m_pPieceTable = new pt_PieceTable(this);
    if (!m_pPieceTable)
    {
        UT_DEBUGMSG(("PD_Document::readFromFile -- could not construct piece table
"));
        return UT_NOPIECETABLE;
    }

    m_pPieceTable->setPieceTableState(PTS_Loading);

    {
        UT_String template_list[6];
        
        buildTemplateList (template_list, "normal.awt");

        bool success = false;
        for (UT_uint32 i = 0; i < 6 && !success; i++)
            success = (importStyles(template_list[i].c_str(), ieft, true) == UT_OK);

        // don't worry if this fails
    }

    IE_Imp * pie = NULL;
    UT_Error errorCode;

    errorCode = IE_Imp::constructImporter(this, szFilename, static_cast<IEFileType>(ieft), &pie, &m_lastOpenedType);
    if (errorCode)
    {
        UT_DEBUGMSG(("PD_Document::readFromFile -- could not construct importer
"));
        return errorCode;
    }
    if (impProps && strlen(impProps))
        pie->setProps (impProps);

    _syncFileTypes(false);

    // set standard document properties and attributes, such as dtd, lang,
    // dom-dir, etc., which the importer can then overwite
    // this also initializes m_indexAP
    m_indexAP = 0xffffffff;
    setAttrProp(NULL);

    errorCode = pie->importFile(szFilename);
    delete pie;
        repairDoc();    //意味着之前已经读取并且分析了文档结构了