Bug report #7735: QgsProject.writeEntry bugs with line endings - QGIS Application - QGIS Issue Tracking

Bug report #7735

QgsProject.writeEntry bugs with line endings

Added by Olivier Dalang about 11 years ago. Updated almost 10 years ago.

Status:	Closed
Priority:	Normal
Assignee:	-
Category:	Project Loading/Saving
Affected QGIS version:	master	Regression?:	No
Operating System:	windows	Easy fix?:	No
Pull Request or Patch supplied:	No	Resolution:
Crashes QGIS or corrupts data:	No	Copied to github as #:	16641

Description

Hi !

When saving multiline strings with writeEntry, you get the following bug (tested on windows)

text = '''a
b
c'''

QgsProject.instance().writeEntry('test','test',text)

QgsProject.instance().readEntry('test','test')[0] # this works fine : prints  PyQt4.QtCore.QString(u'a\
b\
c')

# save and reopen file

QgsProject.instance().readEntry('test','test')[0] # now, this prints  PyQt4.QtCore.QString(u'a\
\
b\
\
c')

# save and reopen file several time

QgsProject.instance().readEntry('test','test')[0] # now, this prints  PyQt4.QtCore.QString(u'a\
\
\
\
\
b\
\
\
\
\
c')

So you end up with a string having a lot of useless linebreaks... In the file, it looks like this :

        <test>
            <test type="QString">a&#xd;&#xd;&#xd;&#xd;
b&#xd;&#xd;&#xd;&#xd;
c</test>
        </test>

Related issues

Associated revisions

Revision 81f677d5
Added by Giuseppe Sucameli about 11 years ago

open project file using text mode (fix #7735)

Revision d62a4981
Added by Jürgen Fischer almost 10 years ago

don't write project files with native line endings on windows
(fixes #6407, fixes #7735, fixes #8267)

History

#1 Updated by Giuseppe Sucameli about 11 years ago

Status changed from Open to Closed

Fixed in changeset 81f677d5019a3d0c8129aae9d4f0f88123110d2d.

#2 Updated by Olivier Dalang over 10 years ago

Status changed from Closed to Reopened

Hi ! It seems the bug reappeared (or never really disappeared ?!!).

It affects the "save query" feature of the DB manager but could also affect other elements.

The problem seems to be already present on 2.0.1 (but I could almost swear it worked well some time ago, maybe for 2.0 ?)

Thanks !!

text = '''a
b
c'''

QgsProject.instance().writeEntry('test','test',text)

QgsProject.instance().readEntry('test','test')[0] # this works fine : prints  u'a\
b\
c'

# save and reopen file

QgsProject.instance().readEntry('test','test')[0] # now, this prints  u'a\
\
b\
\
c'

# save and reopen file several time

QgsProject.instance().readEntry('test','test')[0] # now, this prints  u'a\
\
\
\
\
b\
\
\
\
\
c'