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Moved configmanager code to gen/utils so other parts of gramps can use configman

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svn: r13874
This commit is contained in:
Doug Blank 2009-12-21 04:41:56 +00:00
parent 1fdb6c4b2c
commit 7558a4b8de
4 changed files with 420 additions and 383 deletions
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386
src/config.py
View File

@ -29,31 +29,19 @@ This package implements access to GRAMPS configuration.
#---------------------------------------------------------------
#
# System imports
# Gramps imports
#
#---------------------------------------------------------------
import os
import sys
import time
import ConfigParser
import errno
from gettext import gettext as _
try:
from ast import literal_eval as safe_eval
except:
# PYTHON2.5 COMPATIBILITY: no ast present
# not as safe as literal_eval, but works for python2.5:
def safe_eval(exp):
# restrict eval to empty environment
return eval(exp, {})
#---------------------------------------------------------------
#
# Gramps imports
#
#---------------------------------------------------------------
import const
from gen.utils import ConfigManager
#---------------------------------------------------------------
#
@ -64,377 +52,9 @@ INIFILE = os.path.join(const.HOME_DIR, "gramps32.ini")
#---------------------------------------------------------------
#
# Classes
# Module functions
#
#---------------------------------------------------------------
class ConfigManager(object):
"""
Class to construct the singleton CONFIGMAN where all
settings are stored.
"""
def __init__(self, filename = None):
"""
Configure manager constructor takes an optional filename.
The data dictionary stores the settings:
self.data[section][setting] = value
The value has a type that matches the default. It is an error
to attempt to set the setting to a different type. To change
the type, you must re-register the setting, and re-set the
value. Values can be any simple type in Python (except,
currently longs, which are saved as ints to avoid type
errors). This includes: str, int, list, tuple, dict, float,
etc. Of course, composite types must themselves be composed of
simple types.
The default values are given in Python code and stored here
on start-up:
self.default[section][setting] = default_value
Callbacks are stored as callables here:
self.callbacks[section][setting] = (id, func)
The default filename (usually the one you are reading from)
is stored as self.filename. However, you can save to another
filename using self.save(otherfilename).
"""
self._cb_id = 0 # callback id counter
self.filename = filename
self.callbacks = {}
self.default = {}
self.data = {}
self.reset()
def __getitem__(self, item):
"""
For item access, such as config["interface.dont-ask"]
"""
return self.get(item)
def __setitem__(self, item, value):
"""
For item assignment, such as config["interface.dont-ask"] = True
"""
self.set(item, value)
def reset(self, key=None):
"""
Resets one, a section, or all settings values to their defaults.
This does not disconnect callbacks.
"""
if key is None:
section = None
setting = None
elif "." in key:
section, setting = key.split(".", 1)
else: # key is not None and doesn't have a "."
section = key
setting = None
# Now, do the reset on the right parts:
if section is None:
self.data = {}
for section in self.default:
self.data[section] = {}
for setting in self.default[section]:
self.data[section][setting] = self.default[section][setting]
elif setting is None:
self.data[section] = {}
for setting in self.default[section]:
self.data[section][setting] = self.default[section][setting]
else:
self.data[section][setting] = self.default[section][setting]
# Callbacks are still connected
def get_sections(self):
"""
Return all section names.
"""
return self.data.keys()
def get_section_settings(self, section):
"""
Return all section setting names.
"""
return self.data[section].keys()
def load(self, filename=None, oldstyle=False):
"""
Loads an .ini into self.data.
"""
if filename is None:
filename = self.filename
if filename and os.path.exists(filename):
parser = ConfigParser.RawConfigParser()
parser.read(filename)
for sec in parser.sections():
name = sec.lower()
if name not in self.data:
# Add the setting from file
# These might be old settings, or third-party settings
self.data[name] = {}
for opt in parser.options(sec):
raw_value = parser.get(sec, opt).strip()
setting = opt.lower()
if oldstyle:
####################### Upgrade from oldstyle < 3.2
# Oldstyle didn't mark setting type, but had it
# set in preferences. New style gets it from evaling
# the setting's value
#######################
# if we know this setting, convert type
key = "%s.%s" % (name, setting)
if self.has_default(key):
vtype = type(self.get_default(key))
if vtype == bool:
value = raw_value in ["1", "True"]
elif vtype == list:
print >> sys.stderr, "WARNING: ignoring old key '%s'" % key
continue # there were no lists in oldstyle
else:
value = vtype(raw_value)
else:
# else, ignore it
print >> sys.stderr, "WARNING: ignoring old key '%s'" % key
continue # with next setting
####################### End upgrade code
else:
value = safe_eval(raw_value)
####################### Now, let's test and set:
if (name in self.default and
setting in self.default[name]):
if type(value) == type(self.default[name][setting]):
self.data[name][setting] = value
else:
print >> sys.stderr, ("WARNING: ignoring key with wrong type "
"'%s.%s'" % (name, setting))
else:
# this could be a third-party setting; add it:
self.data[name][setting] = value
def save(self, filename = None):
"""
Saves the current section/settings to an .ini file. Optional filename
will override the default filename to save to, if given.
"""
if filename is None:
filename = self.filename
if filename:
try:
head = os.path.split( filename )[0]
os.makedirs( head )
except OSError, exp:
if exp.errno != errno.EEXIST:
raise
key_file = open(filename, "w")
key_file.write(";; Gramps key file\n")
key_file.write((";; Automatically created at %s" %
time.strftime("%Y/%m/%d %H:%M:%S")) + "\n\n")
sections = sorted(self.data)
for section in sections:
key_file.write(("[%s]\n") % section)
keys = sorted(self.data[section])
for key in keys:
value = self.data[section][key]
# If it has a default:
if self.has_default("%s.%s" % (section, key)):
if value == self.get_default("%s.%s" % (section, key)):
default = ";;"
else:
default = ""
if isinstance(value, long):
value = int(value)
key_file.write(("%s%s=%s\n")% (default,
key,
repr(value)))
key_file.write("\n")
key_file.close()
# else, no filename given; nothing to save so do nothing quietly
def get(self, key):
"""
Get the setting's value. raise an error if an invalid section.setting.
Key is a sting in the "section.setting" format.
"""
if "." in key:
section, setting = key.split(".", 1)
else:
raise AttributeError("Invalid config section.setting name: '%s'" %
key)
if section not in self.data:
raise AttributeError("No such config section name: '%s'" % section)
if setting not in self.data[section]:
raise AttributeError("No such config setting name: '%s.%s'" %
(section, setting))
return self.data[section][setting]
def is_set(self, key):
"""
Does the setting exist? Returns True if does, False otherwise.
Key is a sting in the "section.setting" format.
"""
if "." in key:
section, setting = key.split(".", 1)
else:
return False
if section not in self.data:
return False
if setting not in self.data[section]:
return False
return True
def has_default(self, key):
"""
Does the setting have a default value? Returns True if it does,
False otherwise. Key is a sting in the "section.setting" format.
"""
if "." in key:
section, setting = key.split(".", 1)
else:
return False
if section not in self.default:
return False
if setting not in self.default[section]:
return False
return True
def get_default(self, key):
"""
Get the setting's default value. Raises an error if invalid key is
give. Key is a sting in the "section.setting" format.
"""
if "." in key:
section, setting = key.split(".", 1)
else:
raise AttributeError("Invalid config section.setting name: '%s'" %
key)
if section not in self.default:
raise AttributeError("No such config section name: '%s'" % section)
if setting not in self.default[section]:
raise AttributeError("No such config setting name: '%s.%s'" %
(section, setting))
return self.default[section][setting]
def register(self, key, default):
"""
Register a section.setting, and set the default.
Will overwrite any previously set default, and set setting if not one.
The default value deterimines the type of the setting.
"""
if "." in key:
section, setting = key.split(".", 1)
else:
raise AttributeError("Invalid config section.setting name: '%s'" %
key)
if section not in self.data:
self.data[section] = {}
if section not in self.default:
self.default[section] = {}
if section not in self.callbacks:
self.callbacks[section] = {}
if setting not in self.callbacks[section]:
self.callbacks[section][setting] = []
# Add the default value to settings, if not exist:
if setting not in self.data[section]:
self.data[section][setting] = default
# Set the default, regardless:
self.default[section][setting] = default
def connect(self, key, func):
"""
Connect a callback func that gets called when key is changed.
"""
if "." in key:
section, setting = key.split(".", 1)
else:
raise AttributeError("Invalid config section.setting name: '%s'" %
key)
if section not in self.data:
raise AttributeError("No such config section name: '%s'" % section)
if setting not in self.data[section]:
raise AttributeError("No such config setting name: '%s.%s'" %
(section, setting))
self._cb_id += 1
self.callbacks[section][setting].append((self._cb_id, func))
return self._cb_id
def disconnect(self, callback_id):
"""
Removes a callback given its callback ID. The ID is generated and
returned when the function is connected to the key (section.setting).
"""
for section in self.callbacks:
for setting in self.callbacks[section]:
for (cbid, func) in self.callbacks[section][setting]:
if callback_id == cbid:
self.callbacks[section][setting].remove((cbid, func))
def emit(self, key):
"""
Emits the signal "key" which will call the callbacks associated
with that setting.
"""
if "." in key:
section, setting = key.split(".", 1)
else:
raise AttributeError("Invalid config section.setting name: '%s'" %
key)
if section not in self.callbacks:
raise AttributeError("No such config section name: '%s'" % section)
if setting not in self.callbacks[section]:
raise AttributeError("No such config setting name: '%s.%s'" %
(section, setting))
for (cbid, func) in self.callbacks[section][setting]:
func(self, 0, str(self.data[section][setting]), None)
def set(self, key, value):
"""
Set the setting's value. There are only two ways to get into
the data dictionary: via the load() method that reads a file,
or from this method.
"""
if "." in key:
section, setting = key.split(".", 1)
else:
raise AttributeError("Invalid config section.setting name: '%s'" %
key)
if section not in self.data:
raise AttributeError("No such config section name: '%s'" % section)
if setting not in self.data[section]:
raise AttributeError("No such config setting name: '%s.%s'" %
(section, setting))
# Check value to see if right type:
if type(value) == long:
value = int(value)
if type(value) == unicode:
value = str(value)
if self.has_default(key):
if type(self.get_default(key)) != type(value):
raise AttributeError("attempting to set '%s' to wrong type "
"'%s'; should be '%s'" %
(key, type(value),
type(self.get_default(key))))
if (setting in self.data[section] and
self.data[section][setting] == value):
# Do nothing if existed and is the same
pass
else:
# Set the value:
self.data[section][setting] = value
# Only call callback if the value changed!
if (section in self.callbacks and
setting in self.callbacks[section]):
self.emit(key)
#---------------------------------------------------------------
#
# Convience functions to call ConfigManager instance methods
#
#---------------------------------------------------------------
def register(key, value):
""" Module shortcut to register key, value """
return CONFIGMAN.register(key, value)

1
src/gen/utils/Makefile.am
View File

@ -9,6 +9,7 @@ pkgdata_PYTHON = \
__init__.py \
callback.py \
callman.py \
configmanager.py \
progressmon.py \
longop.py

1
src/gen/utils/__init__.py
View File

@ -22,6 +22,7 @@
Generic utilities useful for users of the gen package
"""
from configmanager import ConfigManager
from progressmon import ProgressMonitor
from longop import LongOpStatus
from callback import Callback

415
src/gen/utils/configmanager.py Normal file
View File

@ -0,0 +1,415 @@
#
# Gramps - a GTK+/GNOME based genealogy program
#
# Copyright (C) 2005-2007 Donald N. Allingham
# Copyright (C) 2008-2009 Gary Burton
# Copyright (C) 2009 Doug Blank <doug.blank@gmail.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# $Id$
"""
This package implements access to GRAMPS configuration.
"""
#---------------------------------------------------------------
#
# System imports
#
#---------------------------------------------------------------
import os
import sys
import time
import ConfigParser
import errno
try:
from ast import literal_eval as safe_eval
except:
# PYTHON2.5 COMPATIBILITY: no ast present
# not as safe as literal_eval, but works for python2.5:
def safe_eval(exp):
# restrict eval to empty environment
return eval(exp, {})
#---------------------------------------------------------------
#
# Classes
#
#---------------------------------------------------------------
class ConfigManager(object):
"""
Class to construct the singleton CONFIGMAN where all
settings are stored.
"""
def __init__(self, filename = None):
"""
Configure manager constructor takes an optional filename.
The data dictionary stores the settings:
self.data[section][setting] = value
The value has a type that matches the default. It is an error
to attempt to set the setting to a different type. To change
the type, you must re-register the setting, and re-set the
value. Values can be any simple type in Python (except,
currently longs, which are saved as ints to avoid type
errors). This includes: str, int, list, tuple, dict, float,
etc. Of course, composite types must themselves be composed of
simple types.
The default values are given in Python code and stored here
on start-up:
self.default[section][setting] = default_value
Callbacks are stored as callables here:
self.callbacks[section][setting] = (id, func)
The default filename (usually the one you are reading from)
is stored as self.filename. However, you can save to another
filename using self.save(otherfilename).
"""
self._cb_id = 0 # callback id counter
self.filename = filename
self.callbacks = {}
self.default = {}
self.data = {}
self.reset()
def __getitem__(self, item):
"""
For item access, such as config["interface.dont-ask"]
"""
return self.get(item)
def __setitem__(self, item, value):
"""
For item assignment, such as config["interface.dont-ask"] = True
"""
self.set(item, value)
def reset(self, key=None):
"""
Resets one, a section, or all settings values to their defaults.
This does not disconnect callbacks.
"""
if key is None:
section = None
setting = None
elif "." in key:
section, setting = key.split(".", 1)
else: # key is not None and doesn't have a "."
section = key
setting = None
# Now, do the reset on the right parts:
if section is None:
self.data = {}
for section in self.default:
self.data[section] = {}
for setting in self.default[section]:
self.data[section][setting] = self.default[section][setting]
elif setting is None:
self.data[section] = {}
for setting in self.default[section]:
self.data[section][setting] = self.default[section][setting]
else:
self.data[section][setting] = self.default[section][setting]
# Callbacks are still connected
def get_sections(self):
"""
Return all section names.
"""
return self.data.keys()
def get_section_settings(self, section):
"""
Return all section setting names.
"""
return self.data[section].keys()
def load(self, filename=None, oldstyle=False):
"""
Loads an .ini into self.data.
"""
if filename is None:
filename = self.filename
if filename and os.path.exists(filename):
parser = ConfigParser.RawConfigParser()
parser.read(filename)
for sec in parser.sections():
name = sec.lower()
if name not in self.data:
# Add the setting from file
# These might be old settings, or third-party settings
self.data[name] = {}
for opt in parser.options(sec):
raw_value = parser.get(sec, opt).strip()
setting = opt.lower()
if oldstyle:
####################### Upgrade from oldstyle < 3.2
# Oldstyle didn't mark setting type, but had it
# set in preferences. New style gets it from evaling
# the setting's value
#######################
# if we know this setting, convert type
key = "%s.%s" % (name, setting)
if self.has_default(key):
vtype = type(self.get_default(key))
if vtype == bool:
value = raw_value in ["1", "True"]
elif vtype == list:
print >> sys.stderr, "WARNING: ignoring old key '%s'" % key
continue # there were no lists in oldstyle
else:
value = vtype(raw_value)
else:
# else, ignore it
print >> sys.stderr, "WARNING: ignoring old key '%s'" % key
continue # with next setting
####################### End upgrade code
else:
value = safe_eval(raw_value)
####################### Now, let's test and set:
if (name in self.default and
setting in self.default[name]):
if type(value) == type(self.default[name][setting]):
self.data[name][setting] = value
else:
print >> sys.stderr, ("WARNING: ignoring key with wrong type "
"'%s.%s'" % (name, setting))
else:
# this could be a third-party setting; add it:
self.data[name][setting] = value
def save(self, filename = None):
"""
Saves the current section/settings to an .ini file. Optional filename
will override the default filename to save to, if given.
"""
if filename is None:
filename = self.filename
if filename:
try:
head = os.path.split( filename )[0]
os.makedirs( head )
except OSError, exp:
if exp.errno != errno.EEXIST:
raise
key_file = open(filename, "w")
key_file.write(";; Gramps key file\n")
key_file.write((";; Automatically created at %s" %
time.strftime("%Y/%m/%d %H:%M:%S")) + "\n\n")
sections = sorted(self.data)
for section in sections:
key_file.write(("[%s]\n") % section)
keys = sorted(self.data[section])
for key in keys:
value = self.data[section][key]
# If it has a default:
if self.has_default("%s.%s" % (section, key)):
if value == self.get_default("%s.%s" % (section, key)):
default = ";;"
else:
default = ""
if isinstance(value, long):
value = int(value)
key_file.write(("%s%s=%s\n")% (default,
key,
repr(value)))
key_file.write("\n")
key_file.close()
# else, no filename given; nothing to save so do nothing quietly
def get(self, key):
"""
Get the setting's value. raise an error if an invalid section.setting.
Key is a sting in the "section.setting" format.
"""
if "." in key:
section, setting = key.split(".", 1)
else:
raise AttributeError("Invalid config section.setting name: '%s'" %
key)
if section not in self.data:
raise AttributeError("No such config section name: '%s'" % section)
if setting not in self.data[section]:
raise AttributeError("No such config setting name: '%s.%s'" %
(section, setting))
return self.data[section][setting]
def is_set(self, key):
"""
Does the setting exist? Returns True if does, False otherwise.
Key is a sting in the "section.setting" format.
"""
if "." in key:
section, setting = key.split(".", 1)
else:
return False
if section not in self.data:
return False
if setting not in self.data[section]:
return False
return True
def has_default(self, key):
"""
Does the setting have a default value? Returns True if it does,
False otherwise. Key is a sting in the "section.setting" format.
"""
if "." in key:
section, setting = key.split(".", 1)
else:
return False
if section not in self.default:
return False
if setting not in self.default[section]:
return False
return True
def get_default(self, key):
"""
Get the setting's default value. Raises an error if invalid key is
give. Key is a sting in the "section.setting" format.
"""
if "." in key:
section, setting = key.split(".", 1)
else:
raise AttributeError("Invalid config section.setting name: '%s'" %
key)
if section not in self.default:
raise AttributeError("No such config section name: '%s'" % section)
if setting not in self.default[section]:
raise AttributeError("No such config setting name: '%s.%s'" %
(section, setting))
return self.default[section][setting]
def register(self, key, default):
"""
Register a section.setting, and set the default.
Will overwrite any previously set default, and set setting if not one.
The default value deterimines the type of the setting.
"""
if "." in key:
section, setting = key.split(".", 1)
else:
raise AttributeError("Invalid config section.setting name: '%s'" %
key)
if section not in self.data:
self.data[section] = {}
if section not in self.default:
self.default[section] = {}
if section not in self.callbacks:
self.callbacks[section] = {}
if setting not in self.callbacks[section]:
self.callbacks[section][setting] = []
# Add the default value to settings, if not exist:
if setting not in self.data[section]:
self.data[section][setting] = default
# Set the default, regardless:
self.default[section][setting] = default
def connect(self, key, func):
"""
Connect a callback func that gets called when key is changed.
"""
if "." in key:
section, setting = key.split(".", 1)
else:
raise AttributeError("Invalid config section.setting name: '%s'" %
key)
if section not in self.data:
raise AttributeError("No such config section name: '%s'" % section)
if setting not in self.data[section]:
raise AttributeError("No such config setting name: '%s.%s'" %
(section, setting))
self._cb_id += 1
self.callbacks[section][setting].append((self._cb_id, func))
return self._cb_id
def disconnect(self, callback_id):
"""
Removes a callback given its callback ID. The ID is generated and
returned when the function is connected to the key (section.setting).
"""
for section in self.callbacks:
for setting in self.callbacks[section]:
for (cbid, func) in self.callbacks[section][setting]:
if callback_id == cbid:
self.callbacks[section][setting].remove((cbid, func))
def emit(self, key):
"""
Emits the signal "key" which will call the callbacks associated
with that setting.
"""
if "." in key:
section, setting = key.split(".", 1)
else:
raise AttributeError("Invalid config section.setting name: '%s'" %
key)
if section not in self.callbacks:
raise AttributeError("No such config section name: '%s'" % section)
if setting not in self.callbacks[section]:
raise AttributeError("No such config setting name: '%s.%s'" %
(section, setting))
for (cbid, func) in self.callbacks[section][setting]:
func(self, 0, str(self.data[section][setting]), None)
def set(self, key, value):
"""
Set the setting's value. There are only two ways to get into
the data dictionary: via the load() method that reads a file,
or from this method.
"""
if "." in key:
section, setting = key.split(".", 1)
else:
raise AttributeError("Invalid config section.setting name: '%s'" %
key)
if section not in self.data:
raise AttributeError("No such config section name: '%s'" % section)
if setting not in self.data[section]:
raise AttributeError("No such config setting name: '%s.%s'" %
(section, setting))
# Check value to see if right type:
if type(value) == long:
value = int(value)
if type(value) == unicode:
value = str(value)
if self.has_default(key):
if type(self.get_default(key)) != type(value):
raise AttributeError("attempting to set '%s' to wrong type "
"'%s'; should be '%s'" %
(key, type(value),
type(self.get_default(key))))
if (setting in self.data[section] and
self.data[section][setting] == value):
# Do nothing if existed and is the same
pass
else:
# Set the value:
self.data[section][setting] = value
# Only call callback if the value changed!
if (section in self.callbacks and
setting in self.callbacks[section]):
self.emit(key)