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Trying to optimize xml parser.

This commit is contained in:
iaom 2021-04-13 13:57:02 +08:00
parent f1485deeac
commit 270f959c38
1 changed files with 23 additions and 2 deletions
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25
libsearch/file-utils.cpp
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@ -548,7 +548,6 @@ void FileUtils::getDocxTextContent(QString &path,QString &textcontent)
void FileUtils::getPptxTextContent(QString &path, QString &textcontent)
{
//fix me :optimized by xpath??
QFileInfo info = QFileInfo(path);
if(!info.exists()||info.isDir())
return;
@ -569,7 +568,9 @@ void FileUtils::getPptxTextContent(QString &path, QString &textcontent)
QDomElement txbody;
QDomElement ap;
QDomElement ar;
QDomDocument doc;
QDomElement at;
// QDomNodeList atList;
for(int i =0;i<fileList.size();++i)
{
QString name = prefix + QString::number(i+1) + ".xml";
@ -579,9 +580,29 @@ void FileUtils::getPptxTextContent(QString &path, QString &textcontent)
}
QuaZipFile fileR(&file);
fileR.open(QIODevice::ReadOnly);
QDomDocument doc;
doc.clear();
doc.setContent(fileR.readAll());
fileR.close();
//fix me :optimized by xpath??
//This method looks better but slower,
//If xml file is very large with many useless node,this method will take a lot of time.
// atList = doc.elementsByTagName("a:t");
// for(int i = 0; i<atList.size(); ++i)
// {
// at = atList.at(i).toElement();
// if(!at.isNull())
// {
// textcontent.append(at.text().replace("\r","")).replace("\t"," ");
// if(textcontent.length() >= MAX_CONTENT_LENGTH/3)
// {
// file.close();
// return;
// }
// }
// }
//This is ugly but seems more efficient when handel a large file.
sptree = doc.firstChildElement("p:sld").firstChildElement("p:cSld").firstChildElement("p:spTree");
while(!sptree.isNull())
{