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50
51#include <QtCore>
52
53void parseHtmlFile(QTextStream &out, const QString &fileName)
54{
55 QFile file(fileName);
56
57 out << "Analysis of HTML file: " << fileName << Qt::endl;
58
59 if (!file.open(flags: QIODevice::ReadOnly)) {
60 out << " Couldn't open the file." << Qt::endl << Qt::endl << Qt::endl;
61 return;
62 }
63
64//! [0]
65 QXmlStreamReader reader(&file);
66//! [0]
67
68//! [1]
69 int paragraphCount = 0;
70 QStringList links;
71 QString title;
72 while (!reader.atEnd()) {
73 reader.readNext();
74 if (reader.isStartElement()) {
75 if (reader.name() == QLatin1String("title"))
76 title = reader.readElementText();
77 else if (reader.name() == QLatin1String("a"))
78 links.append(t: reader.attributes().value(qualifiedName: QLatin1String("href")).toString());
79 else if (reader.name() == QLatin1String("p"))
80 ++paragraphCount;
81 }
82 }
83//! [1]
84
85//! [2]
86 if (reader.hasError()) {
87 out << " The HTML file isn't well-formed: " << reader.errorString()
88 << Qt::endl << Qt::endl << Qt::endl;
89 return;
90 }
91//! [2]
92
93 out << " Title: \"" << title << '"' << Qt::endl
94 << " Number of paragraphs: " << paragraphCount << Qt::endl
95 << " Number of links: " << links.size() << Qt::endl
96 << " Showing first few links:" << Qt::endl;
97
98 while (links.size() > 5)
99 links.removeLast();
100
101 for (const QString &link : qAsConst(t&: links))
102 out << " " << link << Qt::endl;
103 out << Qt::endl << Qt::endl;
104}
105
106int main(int argc, char **argv)
107{
108 // initialize Qt Core application
109 QCoreApplication app(argc, argv);
110
111 // get a list of all html files in the current directory
112 const QStringList filter = { QStringLiteral("*.htm"),
113 QStringLiteral("*.html") };
114
115 const QStringList htmlFiles = QDir(QStringLiteral(":/")).entryList(nameFilters: filter, filters: QDir::Files);
116
117 QTextStream out(stdout);
118
119 if (htmlFiles.isEmpty()) {
120 out << "No html files available.";
121 return 1;
122 }
123
124 // parse each html file and write the result to file/stream
125 for (const QString &file : htmlFiles)
126 parseHtmlFile(out, QStringLiteral(":/") + file);
127
128 return 0;
129}
130

source code of qtbase/examples/xml/htmlinfo/main.cpp