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Html parser

Solved General and Desktop

20 Posts 9 Posters 4.0k Views 5 Watching

Hi
Something like

QString html = R"(
        <html>
        <head><title>Index of /satfiles/</title></head>
        <body bgcolor="white">
        <h1>Index of /satfiles/</h1><hr><pre><a href="../">../</a>
        <a href="test1.txt">test1.txt</a> 28-Oct-2018 08:08 14
        <a href="test2.txt">test2.txt</a> 28-Oct-2018 08:09 13
        <a href="yazmifiletest.ts">yazmifiletest.ts</a> 28-Oct-2018 08:09 30
        </pre><hr></body>
        </html>)";

QString regex = R"(href="([^"]*))";
----
 QRegularExpression re(regex);
  QRegularExpressionMatchIterator i = re.globalMatch(html);
  while (i.hasNext()) {
    QRegularExpressionMatch match = i.next();
    qDebug().noquote() << match.captured();
  }

Gets you

href="../
href="test1.txt
href="test2.txt
href="yazmifiletest.ts

you can use
https://regexr.com/
to tweak the expression to match exactly.

satyanarayana143

wrote on

#10

thakk you for giving solution i want like this only i have solved my problem.

Hi
Something like

QString html = R"(
        <html>
        <head><title>Index of /satfiles/</title></head>
        <body bgcolor="white">
        <h1>Index of /satfiles/</h1><hr><pre><a href="../">../</a>
        <a href="test1.txt">test1.txt</a> 28-Oct-2018 08:08 14
        <a href="test2.txt">test2.txt</a> 28-Oct-2018 08:09 13
        <a href="yazmifiletest.ts">yazmifiletest.ts</a> 28-Oct-2018 08:09 30
        </pre><hr></body>
        </html>)";

QString regex = R"(href="([^"]*))";
----
 QRegularExpression re(regex);
  QRegularExpressionMatchIterator i = re.globalMatch(html);
  while (i.hasNext()) {
    QRegularExpressionMatch match = i.next();
    qDebug().noquote() << match.captured();
  }

Gets you

href="../
href="test1.txt
href="test2.txt
href="yazmifiletest.ts

you can use
https://regexr.com/
to tweak the expression to match exactly.

wrote on

#11

@mrjj said in Html parser:

R

sir in this what does R mean for in the QString html

M ManiRon

@mrjj said in Html parser:

R

sir in this what does R mean for in the QString html
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aha_1980
Lifetime Qt Champion
wrote on last edited by

#12

@ManiRon: https://solarianprogrammer.com/2011/10/16/cpp-11-raw-strings-literals-tutorial
Qt has to stay free or it will die.
M 1 Reply Last reply

1
A aha_1980

@ManiRon: https://solarianprogrammer.com/2011/10/16/cpp-11-raw-strings-literals-tutorial
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M Offline
ManiRon

wrote on last edited by

#13

@aha_1980 said in Html parser:

https://solarianprogrammer.com/2011/10/16/cpp-11-raw-strings-literals-tutorial

error: 'R' was not declared in this scope
QString qHtml = R"(<button type="button">Click Me!</button>)";
^
M 1 Reply Last reply

0
M ManiRon

@aha_1980 said in Html parser:

https://solarianprogrammer.com/2011/10/16/cpp-11-raw-strings-literals-tutorial

error: 'R' was not declared in this scope
QString qHtml = R"(<button type="button">Click Me!</button>)";
^
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mrjj
Lifetime Qt Champion
wrote on last edited by

#14

@ManiRon
Hi
Code seems fine - so it must be compiler version.

Is it an older Qt / Compiler ?

Its a c++ 11 feature with R (raw strings)
M 1 Reply Last reply

1
M mrjj

@ManiRon
Hi
Code seems fine - so it must be compiler version.

Is it an older Qt / Compiler ?

Its a c++ 11 feature with R (raw strings)
M Offline
M Offline
ManiRon

wrote on last edited by

#15

@mrjj its Qt 5.5
M 1 Reply Last reply

0
M ManiRon

@mrjj its Qt 5.5
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mrjj
Lifetime Qt Champion
wrote on last edited by

#16

@ManiRon
Hi
Can you try to add
CONFIG += c++11
in your .pro file
then run qmake and rebuild all (from menu) and see if it accepts it then.
M 2 Replies Last reply

0
M mrjj

@ManiRon
Hi
Can you try to add
CONFIG += c++11
in your .pro file
then run qmake and rebuild all (from menu) and see if it accepts it then.
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ManiRon

wrote on last edited by

#17

@mrjj said in Html parser:

CONFIG += c++11

i will check and say sir
1 Reply Last reply

0
M mrjj

@ManiRon
Hi
Can you try to add
CONFIG += c++11
in your .pro file
then run qmake and rebuild all (from menu) and see if it accepts it then.
M Offline
M Offline
ManiRon

wrote on last edited by ManiRon

#18
@mrjj
1. It worked sir
2. But i am trying to create a button as you can see in the previous code its just displaying the text click me and not the button in the HTML file
3. I know that in the list of attribute supported by QT <button> tag is not there whether we can make QT to make work on this
M 1 Reply Last reply

0
M ManiRon
@mrjj
1. It worked sir
2. But i am trying to create a button as you can see in the previous code its just displaying the text click me and not the button in the HTML file
3. I know that in the list of attribute supported by QT <button> tag is not there whether we can make QT to make work on this
M Offline
M Offline
mrjj
Lifetime Qt Champion
wrote on last edited by mrjj

#19

@ManiRon
Hi
Super. so was just c+11 support.
The QT widgets cannot draw html Buttons so if you
view them in textEdit/Browser no buttons can be shown.

I know no easy way to have buttons, but you can try with
Qt WebEngine
instead and see if it likes it.
M 1 Reply Last reply

1
M mrjj

@ManiRon
Hi
Super. so was just c+11 support.
The QT widgets cannot draw html Buttons so if you
view them in textEdit/Browser no buttons can be shown.

I know no easy way to have buttons, but you can try with
Qt WebEngine
instead and see if it likes it.
M Offline
M Offline
ManiRon

wrote on last edited by ManiRon

#20

@mrjj as i have not worked on it any sample will be available for Qtwebengine which can be help full to understand it
1 Reply Last reply

0