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configobj_qt.py
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configobj_qt.py
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"""Module containing functions to convert between ConfigObj and QSettings objects."""
import configobj
from PyQt4.QtCore import QSettings
def section_path(config):
"""Get names of section ancestors."""
section = config
if not section.name: # No name => root section => no ancestors
return []
path = [section.name]
# Iterate until root section is reached
while section.parent.name != None:
path.insert(0, section.parent.name)
section = section.parent
return path
def to_QSettings(config, clear=True):
"""Convert ConfigObj to QSettings.
Note that QSettings are automatically saved so this will overwrite any previous application settings."""
settings = QSettings()
if clear:
settings.clear()
def walk(section, key):
"""Copy values from ConfigObj object to QSettings object."""
if key not in section.defaults: # Don't copy default values
settings.setValue('/'.join(section_path(section))+'/%s'%key, section[key])
config.walk(walk)
return settings
def from_QSettings(settings):
"""Convert QSettings to ConfigObj. All values are strings."""
config = configobj.ConfigObj()
for key in settings.allKeys():
path = str(key).split('/')
section = config
while len(path) > 1:
section_name = path.pop(0)
try:
section = section[section_name]
except KeyError:
section[section_name] = {}
section = section[section_name]
section[path.pop()] = str(settings.value(key))
return config
if __name__ == '__main__':
def main():
"""Function to test functionality."""
import sys
from PyQt4.QtCore import QCoreApplication
conf = """
p1 = 1
[mysection]
p2 = 2
[[mysubsection]]
p3 = 3.14
"""
app = QCoreApplication(sys.argv)
app.setApplicationName('configtest')
app.setOrganizationName('foo')
config = configobj.ConfigObj(conf.split('\n'))
settings = to_QSettings(config)
config2 = from_QSettings(settings)
assert(config == config2)
main()