Added xdg directly

This commit is contained in:
itdominator 2021-04-24 18:04:33 -05:00
parent b45badf9fe
commit ec0826a072
14 changed files with 4383 additions and 1 deletions

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@ -9,7 +9,7 @@ gi.require_version('Gdk', '3.0')
from gi.repository import Gtk from gi.repository import Gtk
from gi.repository import Gio from gi.repository import Gio
from xdg.DesktopEntry import DesktopEntry from .utils.xdg.DesktopEntry import DesktopEntry
# Application imports # Application imports

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@ -0,0 +1,160 @@
"""
This module is based on a rox module (LGPL):
http://cvs.sourceforge.net/viewcvs.py/rox/ROX-Lib2/python/rox/basedir.py?rev=1.9&view=log
The freedesktop.org Base Directory specification provides a way for
applications to locate shared data and configuration:
http://standards.freedesktop.org/basedir-spec/
(based on version 0.6)
This module can be used to load and save from and to these directories.
Typical usage:
from rox import basedir
for dir in basedir.load_config_paths('mydomain.org', 'MyProg', 'Options'):
print "Load settings from", dir
dir = basedir.save_config_path('mydomain.org', 'MyProg')
print >>file(os.path.join(dir, 'Options'), 'w'), "foo=2"
Note: see the rox.Options module for a higher-level API for managing options.
"""
import os, stat
_home = os.path.expanduser('~')
xdg_data_home = os.environ.get('XDG_DATA_HOME') or \
os.path.join(_home, '.local', 'share')
xdg_data_dirs = [xdg_data_home] + \
(os.environ.get('XDG_DATA_DIRS') or '/usr/local/share:/usr/share').split(':')
xdg_config_home = os.environ.get('XDG_CONFIG_HOME') or \
os.path.join(_home, '.config')
xdg_config_dirs = [xdg_config_home] + \
(os.environ.get('XDG_CONFIG_DIRS') or '/etc/xdg').split(':')
xdg_cache_home = os.environ.get('XDG_CACHE_HOME') or \
os.path.join(_home, '.cache')
xdg_data_dirs = [x for x in xdg_data_dirs if x]
xdg_config_dirs = [x for x in xdg_config_dirs if x]
def save_config_path(*resource):
"""Ensure ``$XDG_CONFIG_HOME/<resource>/`` exists, and return its path.
'resource' should normally be the name of your application. Use this
when saving configuration settings.
"""
resource = os.path.join(*resource)
assert not resource.startswith('/')
path = os.path.join(xdg_config_home, resource)
if not os.path.isdir(path):
os.makedirs(path, 0o700)
return path
def save_data_path(*resource):
"""Ensure ``$XDG_DATA_HOME/<resource>/`` exists, and return its path.
'resource' should normally be the name of your application or a shared
resource. Use this when saving or updating application data.
"""
resource = os.path.join(*resource)
assert not resource.startswith('/')
path = os.path.join(xdg_data_home, resource)
if not os.path.isdir(path):
os.makedirs(path)
return path
def save_cache_path(*resource):
"""Ensure ``$XDG_CACHE_HOME/<resource>/`` exists, and return its path.
'resource' should normally be the name of your application or a shared
resource."""
resource = os.path.join(*resource)
assert not resource.startswith('/')
path = os.path.join(xdg_cache_home, resource)
if not os.path.isdir(path):
os.makedirs(path)
return path
def load_config_paths(*resource):
"""Returns an iterator which gives each directory named 'resource' in the
configuration search path. Information provided by earlier directories should
take precedence over later ones, and the user-specific config dir comes
first."""
resource = os.path.join(*resource)
for config_dir in xdg_config_dirs:
path = os.path.join(config_dir, resource)
if os.path.exists(path): yield path
def load_first_config(*resource):
"""Returns the first result from load_config_paths, or None if there is nothing
to load."""
for x in load_config_paths(*resource):
return x
return None
def load_data_paths(*resource):
"""Returns an iterator which gives each directory named 'resource' in the
application data search path. Information provided by earlier directories
should take precedence over later ones."""
resource = os.path.join(*resource)
for data_dir in xdg_data_dirs:
path = os.path.join(data_dir, resource)
if os.path.exists(path): yield path
def get_runtime_dir(strict=True):
"""Returns the value of $XDG_RUNTIME_DIR, a directory path.
This directory is intended for 'user-specific non-essential runtime files
and other file objects (such as sockets, named pipes, ...)', and
'communication and synchronization purposes'.
As of late 2012, only quite new systems set $XDG_RUNTIME_DIR. If it is not
set, with ``strict=True`` (the default), a KeyError is raised. With
``strict=False``, PyXDG will create a fallback under /tmp for the current
user. This fallback does *not* provide the same guarantees as the
specification requires for the runtime directory.
The strict default is deliberately conservative, so that application
developers can make a conscious decision to allow the fallback.
"""
try:
return os.environ['XDG_RUNTIME_DIR']
except KeyError:
if strict:
raise
import getpass
fallback = '/tmp/pyxdg-runtime-dir-fallback-' + getpass.getuser()
create = False
try:
# This must be a real directory, not a symlink, so attackers can't
# point it elsewhere. So we use lstat to check it.
st = os.lstat(fallback)
except OSError as e:
import errno
if e.errno == errno.ENOENT:
create = True
else:
raise
else:
# The fallback must be a directory
if not stat.S_ISDIR(st.st_mode):
os.unlink(fallback)
create = True
# Must be owned by the user and not accessible by anyone else
elif (st.st_uid != os.getuid()) \
or (st.st_mode & (stat.S_IRWXG | stat.S_IRWXO)):
os.rmdir(fallback)
create = True
if create:
os.mkdir(fallback, 0o700)
return fallback

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@ -0,0 +1,39 @@
"""
Functions to configure Basic Settings
"""
language = "C"
windowmanager = None
icon_theme = "hicolor"
icon_size = 48
cache_time = 5
root_mode = False
def setWindowManager(wm):
global windowmanager
windowmanager = wm
def setIconTheme(theme):
global icon_theme
icon_theme = theme
import xdg.IconTheme
xdg.IconTheme.themes = []
def setIconSize(size):
global icon_size
icon_size = size
def setCacheTime(time):
global cache_time
cache_time = time
def setLocale(lang):
import locale
lang = locale.normalize(lang)
locale.setlocale(locale.LC_ALL, lang)
import xdg.Locale
xdg.Locale.update(lang)
def setRootMode(boolean):
global root_mode
root_mode = boolean

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@ -0,0 +1,433 @@
"""
Complete implementation of the XDG Desktop Entry Specification
http://standards.freedesktop.org/desktop-entry-spec/
Not supported:
- Encoding: Legacy Mixed
- Does not check exec parameters
- Does not check URL's
- Does not completly validate deprecated/kde items
- Does not completly check categories
"""
from xdg.IniFile import IniFile, is_ascii
import xdg.Locale
from xdg.Exceptions import ParsingError
from xdg.util import which
import os.path
import re
import warnings
class DesktopEntry(IniFile):
"Class to parse and validate Desktop Entries"
defaultGroup = 'Desktop Entry'
def __init__(self, filename=None):
"""Create a new DesktopEntry.
If filename exists, it will be parsed as a desktop entry file. If not,
or if filename is None, a blank DesktopEntry is created.
"""
self.content = dict()
if filename and os.path.exists(filename):
self.parse(filename)
elif filename:
self.new(filename)
def __str__(self):
return self.getName()
def parse(self, file):
"""Parse a desktop entry file.
This can raise :class:`~xdg.Exceptions.ParsingError`,
:class:`~xdg.Exceptions.DuplicateGroupError` or
:class:`~xdg.Exceptions.DuplicateKeyError`.
"""
IniFile.parse(self, file, ["Desktop Entry", "KDE Desktop Entry"])
def findTryExec(self):
"""Looks in the PATH for the executable given in the TryExec field.
Returns the full path to the executable if it is found, None if not.
Raises :class:`~xdg.Exceptions.NoKeyError` if TryExec is not present.
"""
tryexec = self.get('TryExec', strict=True)
return which(tryexec)
# start standard keys
def getType(self):
return self.get('Type')
def getVersion(self):
"""deprecated, use getVersionString instead """
return self.get('Version', type="numeric")
def getVersionString(self):
return self.get('Version')
def getName(self):
return self.get('Name', locale=True)
def getGenericName(self):
return self.get('GenericName', locale=True)
def getNoDisplay(self):
return self.get('NoDisplay', type="boolean")
def getComment(self):
return self.get('Comment', locale=True)
def getIcon(self):
return self.get('Icon', locale=True)
def getHidden(self):
return self.get('Hidden', type="boolean")
def getOnlyShowIn(self):
return self.get('OnlyShowIn', list=True)
def getNotShowIn(self):
return self.get('NotShowIn', list=True)
def getTryExec(self):
return self.get('TryExec')
def getExec(self):
return self.get('Exec')
def getPath(self):
return self.get('Path')
def getTerminal(self):
return self.get('Terminal', type="boolean")
def getMimeType(self):
"""deprecated, use getMimeTypes instead """
return self.get('MimeType', list=True, type="regex")
def getMimeTypes(self):
return self.get('MimeType', list=True)
def getCategories(self):
return self.get('Categories', list=True)
def getStartupNotify(self):
return self.get('StartupNotify', type="boolean")
def getStartupWMClass(self):
return self.get('StartupWMClass')
def getURL(self):
return self.get('URL')
# end standard keys
# start kde keys
def getServiceTypes(self):
return self.get('ServiceTypes', list=True)
def getDocPath(self):
return self.get('DocPath')
def getKeywords(self):
return self.get('Keywords', list=True, locale=True)
def getInitialPreference(self):
return self.get('InitialPreference')
def getDev(self):
return self.get('Dev')
def getFSType(self):
return self.get('FSType')
def getMountPoint(self):
return self.get('MountPoint')
def getReadonly(self):
return self.get('ReadOnly', type="boolean")
def getUnmountIcon(self):
return self.get('UnmountIcon', locale=True)
# end kde keys
# start deprecated keys
def getMiniIcon(self):
return self.get('MiniIcon', locale=True)
def getTerminalOptions(self):
return self.get('TerminalOptions')
def getDefaultApp(self):
return self.get('DefaultApp')
def getProtocols(self):
return self.get('Protocols', list=True)
def getExtensions(self):
return self.get('Extensions', list=True)
def getBinaryPattern(self):
return self.get('BinaryPattern')
def getMapNotify(self):
return self.get('MapNotify')
def getEncoding(self):
return self.get('Encoding')
def getSwallowTitle(self):
return self.get('SwallowTitle', locale=True)
def getSwallowExec(self):
return self.get('SwallowExec')
def getSortOrder(self):
return self.get('SortOrder', list=True)
def getFilePattern(self):
return self.get('FilePattern', type="regex")
def getActions(self):
return self.get('Actions', list=True)
# end deprecated keys
# desktop entry edit stuff
def new(self, filename):
"""Make this instance into a new, blank desktop entry.
If filename has a .desktop extension, Type is set to Application. If it
has a .directory extension, Type is Directory. Other extensions will
cause :class:`~xdg.Exceptions.ParsingError` to be raised.
"""
if os.path.splitext(filename)[1] == ".desktop":
type = "Application"
elif os.path.splitext(filename)[1] == ".directory":
type = "Directory"
else:
raise ParsingError("Unknown extension", filename)
self.content = dict()
self.addGroup(self.defaultGroup)
self.set("Type", type)
self.filename = filename
# end desktop entry edit stuff
# validation stuff
def checkExtras(self):
# header
if self.defaultGroup == "KDE Desktop Entry":
self.warnings.append('[KDE Desktop Entry]-Header is deprecated')
# file extension
if self.fileExtension == ".kdelnk":
self.warnings.append("File extension .kdelnk is deprecated")
elif self.fileExtension != ".desktop" and self.fileExtension != ".directory":
self.warnings.append('Unknown File extension')
# Type
try:
self.type = self.content[self.defaultGroup]["Type"]
except KeyError:
self.errors.append("Key 'Type' is missing")
# Name
try:
self.name = self.content[self.defaultGroup]["Name"]
except KeyError:
self.errors.append("Key 'Name' is missing")
def checkGroup(self, group):
# check if group header is valid
if not (group == self.defaultGroup \
or re.match("^Desktop Action [a-zA-Z0-9-]+$", group) \
or (re.match("^X-", group) and is_ascii(group))):
self.errors.append("Invalid Group name: %s" % group)
else:
#OnlyShowIn and NotShowIn
if ("OnlyShowIn" in self.content[group]) and ("NotShowIn" in self.content[group]):
self.errors.append("Group may either have OnlyShowIn or NotShowIn, but not both")
def checkKey(self, key, value, group):
# standard keys
if key == "Type":
if value == "ServiceType" or value == "Service" or value == "FSDevice":
self.warnings.append("Type=%s is a KDE extension" % key)
elif value == "MimeType":
self.warnings.append("Type=MimeType is deprecated")
elif not (value == "Application" or value == "Link" or value == "Directory"):
self.errors.append("Value of key 'Type' must be Application, Link or Directory, but is '%s'" % value)
if self.fileExtension == ".directory" and not value == "Directory":
self.warnings.append("File extension is .directory, but Type is '%s'" % value)
elif self.fileExtension == ".desktop" and value == "Directory":
self.warnings.append("Files with Type=Directory should have the extension .directory")
if value == "Application":
if "Exec" not in self.content[group]:
self.warnings.append("Type=Application needs 'Exec' key")
if value == "Link":
if "URL" not in self.content[group]:
self.warnings.append("Type=Link needs 'URL' key")
elif key == "Version":
self.checkValue(key, value)
elif re.match("^Name"+xdg.Locale.regex+"$", key):
pass # locale string
elif re.match("^GenericName"+xdg.Locale.regex+"$", key):
pass # locale string
elif key == "NoDisplay":
self.checkValue(key, value, type="boolean")
elif re.match("^Comment"+xdg.Locale.regex+"$", key):
pass # locale string
elif re.match("^Icon"+xdg.Locale.regex+"$", key):
self.checkValue(key, value)
elif key == "Hidden":
self.checkValue(key, value, type="boolean")
elif key == "OnlyShowIn":
self.checkValue(key, value, list=True)
self.checkOnlyShowIn(value)
elif key == "NotShowIn":
self.checkValue(key, value, list=True)
self.checkOnlyShowIn(value)
elif key == "TryExec":
self.checkValue(key, value)
self.checkType(key, "Application")
elif key == "Exec":
self.checkValue(key, value)
self.checkType(key, "Application")
elif key == "Path":
self.checkValue(key, value)
self.checkType(key, "Application")
elif key == "Terminal":
self.checkValue(key, value, type="boolean")
self.checkType(key, "Application")
elif key == "Actions":
self.checkValue(key, value, list=True)
self.checkType(key, "Application")
elif key == "MimeType":
self.checkValue(key, value, list=True)
self.checkType(key, "Application")
elif key == "Categories":
self.checkValue(key, value)
self.checkType(key, "Application")
self.checkCategories(value)
elif re.match("^Keywords"+xdg.Locale.regex+"$", key):
self.checkValue(key, value, type="localestring", list=True)
self.checkType(key, "Application")
elif key == "StartupNotify":
self.checkValue(key, value, type="boolean")
self.checkType(key, "Application")
elif key == "StartupWMClass":
self.checkType(key, "Application")
elif key == "URL":
self.checkValue(key, value)
self.checkType(key, "URL")
# kde extensions
elif key == "ServiceTypes":
self.checkValue(key, value, list=True)
self.warnings.append("Key '%s' is a KDE extension" % key)
elif key == "DocPath":
self.checkValue(key, value)
self.warnings.append("Key '%s' is a KDE extension" % key)
elif key == "InitialPreference":
self.checkValue(key, value, type="numeric")
self.warnings.append("Key '%s' is a KDE extension" % key)
elif key == "Dev":
self.checkValue(key, value)
self.checkType(key, "FSDevice")
self.warnings.append("Key '%s' is a KDE extension" % key)
elif key == "FSType":
self.checkValue(key, value)
self.checkType(key, "FSDevice")
self.warnings.append("Key '%s' is a KDE extension" % key)
elif key == "MountPoint":
self.checkValue(key, value)
self.checkType(key, "FSDevice")
self.warnings.append("Key '%s' is a KDE extension" % key)
elif key == "ReadOnly":
self.checkValue(key, value, type="boolean")
self.checkType(key, "FSDevice")
self.warnings.append("Key '%s' is a KDE extension" % key)
elif re.match("^UnmountIcon"+xdg.Locale.regex+"$", key):
self.checkValue(key, value)
self.checkType(key, "FSDevice")
self.warnings.append("Key '%s' is a KDE extension" % key)
# deprecated keys
elif key == "Encoding":
self.checkValue(key, value)
self.warnings.append("Key '%s' is deprecated" % key)
elif re.match("^MiniIcon"+xdg.Locale.regex+"$", key):
self.checkValue(key, value)
self.warnings.append("Key '%s' is deprecated" % key)
elif key == "TerminalOptions":
self.checkValue(key, value)
self.warnings.append("Key '%s' is deprecated" % key)
elif key == "DefaultApp":
self.checkValue(key, value)
self.warnings.append("Key '%s' is deprecated" % key)
elif key == "Protocols":
self.checkValue(key, value, list=True)
self.warnings.append("Key '%s' is deprecated" % key)
elif key == "Extensions":
self.checkValue(key, value, list=True)
self.warnings.append("Key '%s' is deprecated" % key)
elif key == "BinaryPattern":
self.checkValue(key, value)
self.warnings.append("Key '%s' is deprecated" % key)
elif key == "MapNotify":
self.checkValue(key, value)
self.warnings.append("Key '%s' is deprecated" % key)
elif re.match("^SwallowTitle"+xdg.Locale.regex+"$", key):
self.warnings.append("Key '%s' is deprecated" % key)
elif key == "SwallowExec":
self.checkValue(key, value)
self.warnings.append("Key '%s' is deprecated" % key)
elif key == "FilePattern":
self.checkValue(key, value, type="regex", list=True)
self.warnings.append("Key '%s' is deprecated" % key)
elif key == "SortOrder":
self.checkValue(key, value, list=True)
self.warnings.append("Key '%s' is deprecated" % key)
# "X-" extensions
elif re.match("^X-[a-zA-Z0-9-]+", key):
pass
else:
self.errors.append("Invalid key: %s" % key)
def checkType(self, key, type):
if not self.getType() == type:
self.errors.append("Key '%s' only allowed in Type=%s" % (key, type))
def checkOnlyShowIn(self, value):
values = self.getList(value)
valid = ["GNOME", "KDE", "LXDE", "MATE", "Razor", "ROX", "TDE", "Unity",
"XFCE", "Old"]
for item in values:
if item not in valid and item[0:2] != "X-":
self.errors.append("'%s' is not a registered OnlyShowIn value" % item);
def checkCategories(self, value):
values = self.getList(value)
main = ["AudioVideo", "Audio", "Video", "Development", "Education", "Game", "Graphics", "Network", "Office", "Science", "Settings", "System", "Utility"]
if not any(item in main for item in values):
self.errors.append("Missing main category")
additional = ['Building', 'Debugger', 'IDE', 'GUIDesigner', 'Profiling', 'RevisionControl', 'Translation', 'Calendar', 'ContactManagement', 'Database', 'Dictionary', 'Chart', 'Email', 'Finance', 'FlowChart', 'PDA', 'ProjectManagement', 'Presentation', 'Spreadsheet', 'WordProcessor', '2DGraphics', 'VectorGraphics', 'RasterGraphics', '3DGraphics', 'Scanning', 'OCR', 'Photography', 'Publishing', 'Viewer', 'TextTools', 'DesktopSettings', 'HardwareSettings', 'Printing', 'PackageManager', 'Dialup', 'InstantMessaging', 'Chat', 'IRCClient', 'Feed', 'FileTransfer', 'HamRadio', 'News', 'P2P', 'RemoteAccess', 'Telephony', 'TelephonyTools', 'VideoConference', 'WebBrowser', 'WebDevelopment', 'Midi', 'Mixer', 'Sequencer', 'Tuner', 'TV', 'AudioVideoEditing', 'Player', 'Recorder', 'DiscBurning', 'ActionGame', 'AdventureGame', 'ArcadeGame', 'BoardGame', 'BlocksGame', 'CardGame', 'KidsGame', 'LogicGame', 'RolePlaying', 'Shooter', 'Simulation', 'SportsGame', 'StrategyGame', 'Art', 'Construction', 'Music', 'Languages', 'ArtificialIntelligence', 'Astronomy', 'Biology', 'Chemistry', 'ComputerScience', 'DataVisualization', 'Economy', 'Electricity', 'Geography', 'Geology', 'Geoscience', 'History', 'Humanities', 'ImageProcessing', 'Literature', 'Maps', 'Math', 'NumericalAnalysis', 'MedicalSoftware', 'Physics', 'Robotics', 'Spirituality', 'Sports', 'ParallelComputing', 'Amusement', 'Archiving', 'Compression', 'Electronics', 'Emulator', 'Engineering', 'FileTools', 'FileManager', 'TerminalEmulator', 'Filesystem', 'Monitor', 'Security', 'Accessibility', 'Calculator', 'Clock', 'TextEditor', 'Documentation', 'Adult', 'Core', 'KDE', 'GNOME', 'XFCE', 'GTK', 'Qt', 'Motif', 'Java', 'ConsoleOnly']
allcategories = additional + main
for item in values:
if item not in allcategories and not item.startswith("X-"):
self.errors.append("'%s' is not a registered Category" % item);
def checkCategorie(self, value):
"""Deprecated alias for checkCategories - only exists for backwards
compatibility.
"""
warnings.warn("checkCategorie is deprecated, use checkCategories",
DeprecationWarning)
return self.checkCategories(value)

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"""
Exception Classes for the xdg package
"""
debug = False
class Error(Exception):
"""Base class for exceptions defined here."""
def __init__(self, msg):
self.msg = msg
Exception.__init__(self, msg)
def __str__(self):
return self.msg
class ValidationError(Error):
"""Raised when a file fails to validate.
The filename is the .file attribute.
"""
def __init__(self, msg, file):
self.msg = msg
self.file = file
Error.__init__(self, "ValidationError in file '%s': %s " % (file, msg))
class ParsingError(Error):
"""Raised when a file cannot be parsed.
The filename is the .file attribute.
"""
def __init__(self, msg, file):
self.msg = msg
self.file = file
Error.__init__(self, "ParsingError in file '%s', %s" % (file, msg))
class NoKeyError(Error):
"""Raised when trying to access a nonexistant key in an INI-style file.
Attributes are .key, .group and .file.
"""
def __init__(self, key, group, file):
Error.__init__(self, "No key '%s' in group %s of file %s" % (key, group, file))
self.key = key
self.group = group
self.file = file
class DuplicateKeyError(Error):
"""Raised when the same key occurs twice in an INI-style file.
Attributes are .key, .group and .file.
"""
def __init__(self, key, group, file):
Error.__init__(self, "Duplicate key '%s' in group %s of file %s" % (key, group, file))
self.key = key
self.group = group
self.file = file
class NoGroupError(Error):
"""Raised when trying to access a nonexistant group in an INI-style file.
Attributes are .group and .file.
"""
def __init__(self, group, file):
Error.__init__(self, "No group: %s in file %s" % (group, file))
self.group = group
self.file = file
class DuplicateGroupError(Error):
"""Raised when the same key occurs twice in an INI-style file.
Attributes are .group and .file.
"""
def __init__(self, group, file):
Error.__init__(self, "Duplicate group: %s in file %s" % (group, file))
self.group = group
self.file = file
class NoThemeError(Error):
"""Raised when trying to access a nonexistant icon theme.
The name of the theme is the .theme attribute.
"""
def __init__(self, theme):
Error.__init__(self, "No such icon-theme: %s" % theme)
self.theme = theme

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"""
Complete implementation of the XDG Icon Spec
http://standards.freedesktop.org/icon-theme-spec/
"""
import os, time
import re
from xdg.IniFile import IniFile, is_ascii
from xdg.BaseDirectory import xdg_data_dirs
from xdg.Exceptions import NoThemeError, debug
import xdg.Config
class IconTheme(IniFile):
"Class to parse and validate IconThemes"
def __init__(self):
IniFile.__init__(self)
def __repr__(self):
return self.name
def parse(self, file):
IniFile.parse(self, file, ["Icon Theme", "KDE Icon Theme"])
self.dir = os.path.dirname(file)
(nil, self.name) = os.path.split(self.dir)
def getDir(self):
return self.dir
# Standard Keys
def getName(self):
return self.get('Name', locale=True)
def getComment(self):
return self.get('Comment', locale=True)
def getInherits(self):
return self.get('Inherits', list=True)
def getDirectories(self):
return self.get('Directories', list=True)
def getScaledDirectories(self):
return self.get('ScaledDirectories', list=True)
def getHidden(self):
return self.get('Hidden', type="boolean")
def getExample(self):
return self.get('Example')
# Per Directory Keys
def getSize(self, directory):
return self.get('Size', type="integer", group=directory)
def getContext(self, directory):
return self.get('Context', group=directory)
def getType(self, directory):
value = self.get('Type', group=directory)
if value:
return value
else:
return "Threshold"
def getMaxSize(self, directory):
value = self.get('MaxSize', type="integer", group=directory)
if value or value == 0:
return value
else:
return self.getSize(directory)
def getMinSize(self, directory):
value = self.get('MinSize', type="integer", group=directory)
if value or value == 0:
return value
else:
return self.getSize(directory)
def getThreshold(self, directory):
value = self.get('Threshold', type="integer", group=directory)
if value or value == 0:
return value
else:
return 2
def getScale(self, directory):
value = self.get('Scale', type="integer", group=directory)
return value or 1
# validation stuff
def checkExtras(self):
# header
if self.defaultGroup == "KDE Icon Theme":
self.warnings.append('[KDE Icon Theme]-Header is deprecated')
# file extension
if self.fileExtension == ".theme":
pass
elif self.fileExtension == ".desktop":
self.warnings.append('.desktop fileExtension is deprecated')
else:
self.warnings.append('Unknown File extension')
# Check required keys
# Name
try:
self.name = self.content[self.defaultGroup]["Name"]
except KeyError:
self.errors.append("Key 'Name' is missing")
# Comment
try:
self.comment = self.content[self.defaultGroup]["Comment"]
except KeyError:
self.errors.append("Key 'Comment' is missing")
# Directories
try:
self.directories = self.content[self.defaultGroup]["Directories"]
except KeyError:
self.errors.append("Key 'Directories' is missing")
def checkGroup(self, group):
# check if group header is valid
if group == self.defaultGroup:
try:
self.name = self.content[group]["Name"]
except KeyError:
self.errors.append("Key 'Name' in Group '%s' is missing" % group)
try:
self.name = self.content[group]["Comment"]
except KeyError:
self.errors.append("Key 'Comment' in Group '%s' is missing" % group)
elif group in self.getDirectories():
try:
self.type = self.content[group]["Type"]
except KeyError:
self.type = "Threshold"
try:
self.name = self.content[group]["Size"]
except KeyError:
self.errors.append("Key 'Size' in Group '%s' is missing" % group)
elif not (re.match(r"^\[X-", group) and is_ascii(group)):
self.errors.append("Invalid Group name: %s" % group)
def checkKey(self, key, value, group):
# standard keys
if group == self.defaultGroup:
if re.match("^Name"+xdg.Locale.regex+"$", key):
pass
elif re.match("^Comment"+xdg.Locale.regex+"$", key):
pass
elif key == "Inherits":
self.checkValue(key, value, list=True)
elif key == "Directories":
self.checkValue(key, value, list=True)
elif key == "ScaledDirectories":
self.checkValue(key, value, list=True)
elif key == "Hidden":
self.checkValue(key, value, type="boolean")
elif key == "Example":
self.checkValue(key, value)
elif re.match("^X-[a-zA-Z0-9-]+", key):
pass
else:
self.errors.append("Invalid key: %s" % key)
elif group in self.getDirectories():
if key == "Size":
self.checkValue(key, value, type="integer")
elif key == "Context":
self.checkValue(key, value)
elif key == "Type":
self.checkValue(key, value)
if value not in ["Fixed", "Scalable", "Threshold"]:
self.errors.append("Key 'Type' must be one out of 'Fixed','Scalable','Threshold', but is %s" % value)
elif key == "MaxSize":
self.checkValue(key, value, type="integer")
if self.type != "Scalable":
self.errors.append("Key 'MaxSize' give, but Type is %s" % self.type)
elif key == "MinSize":
self.checkValue(key, value, type="integer")
if self.type != "Scalable":
self.errors.append("Key 'MinSize' give, but Type is %s" % self.type)
elif key == "Threshold":
self.checkValue(key, value, type="integer")
if self.type != "Threshold":
self.errors.append("Key 'Threshold' give, but Type is %s" % self.type)
elif key == "Scale":
self.checkValue(key, value, type="integer")
elif re.match("^X-[a-zA-Z0-9-]+", key):
pass
else:
self.errors.append("Invalid key: %s" % key)
class IconData(IniFile):
"Class to parse and validate IconData Files"
def __init__(self):
IniFile.__init__(self)
def __repr__(self):
displayname = self.getDisplayName()
if displayname:
return "<IconData: %s>" % displayname
else:
return "<IconData>"
def parse(self, file):
IniFile.parse(self, file, ["Icon Data"])
# Standard Keys
def getDisplayName(self):
"""Retrieve the display name from the icon data, if one is specified."""
return self.get('DisplayName', locale=True)
def getEmbeddedTextRectangle(self):
"""Retrieve the embedded text rectangle from the icon data as a list of
numbers (x0, y0, x1, y1), if it is specified."""
return self.get('EmbeddedTextRectangle', type="integer", list=True)
def getAttachPoints(self):
"""Retrieve the anchor points for overlays & emblems from the icon data,
as a list of co-ordinate pairs, if they are specified."""
return self.get('AttachPoints', type="point", list=True)
# validation stuff
def checkExtras(self):
# file extension
if self.fileExtension != ".icon":
self.warnings.append('Unknown File extension')
def checkGroup(self, group):
# check if group header is valid
if not (group == self.defaultGroup \
or (re.match(r"^\[X-", group) and is_ascii(group))):
self.errors.append("Invalid Group name: %s" % group.encode("ascii", "replace"))
def checkKey(self, key, value, group):
# standard keys
if re.match("^DisplayName"+xdg.Locale.regex+"$", key):
pass
elif key == "EmbeddedTextRectangle":
self.checkValue(key, value, type="integer", list=True)
elif key == "AttachPoints":
self.checkValue(key, value, type="point", list=True)
elif re.match("^X-[a-zA-Z0-9-]+", key):
pass
else:
self.errors.append("Invalid key: %s" % key)
icondirs = []
for basedir in xdg_data_dirs:
icondirs.append(os.path.join(basedir, "icons"))
icondirs.append(os.path.join(basedir, "pixmaps"))
icondirs.append(os.path.expanduser("~/.icons"))
# just cache variables, they give a 10x speed improvement
themes = []
theme_cache = {}
dir_cache = {}
icon_cache = {}
def getIconPath(iconname, size = None, theme = None, extensions = ["png", "svg", "xpm"]):
"""Get the path to a specified icon.
size :
Icon size in pixels. Defaults to ``xdg.Config.icon_size``.
theme :
Icon theme name. Defaults to ``xdg.Config.icon_theme``. If the icon isn't
found in the specified theme, it will be looked up in the basic 'hicolor'
theme.
extensions :
List of preferred file extensions.
Example::
>>> getIconPath("inkscape", 32)
'/usr/share/icons/hicolor/32x32/apps/inkscape.png'
"""
global themes
if size == None:
size = xdg.Config.icon_size
if theme == None:
theme = xdg.Config.icon_theme
# if we have an absolute path, just return it
if os.path.isabs(iconname):
return iconname
# check if it has an extension and strip it
if os.path.splitext(iconname)[1][1:] in extensions:
iconname = os.path.splitext(iconname)[0]
# parse theme files
if (themes == []) or (themes[0].name != theme):
themes = list(__get_themes(theme))
# more caching (icon looked up in the last 5 seconds?)
tmp = (iconname, size, theme, tuple(extensions))
try:
timestamp, icon = icon_cache[tmp]
except KeyError:
pass
else:
if (time.time() - timestamp) >= xdg.Config.cache_time:
del icon_cache[tmp]
else:
return icon
for thme in themes:
icon = LookupIcon(iconname, size, thme, extensions)
if icon:
icon_cache[tmp] = (time.time(), icon)
return icon
# cache stuff again (directories looked up in the last 5 seconds?)
for directory in icondirs:
if (directory not in dir_cache \
or (int(time.time() - dir_cache[directory][1]) >= xdg.Config.cache_time \
and dir_cache[directory][2] < os.path.getmtime(directory))) \
and os.path.isdir(directory):
dir_cache[directory] = (os.listdir(directory), time.time(), os.path.getmtime(directory))
for dir, values in dir_cache.items():
for extension in extensions:
try:
if iconname + "." + extension in values[0]:
icon = os.path.join(dir, iconname + "." + extension)
icon_cache[tmp] = [time.time(), icon]
return icon
except UnicodeDecodeError as e:
if debug:
raise e
else:
pass
# we haven't found anything? "hicolor" is our fallback
if theme != "hicolor":
icon = getIconPath(iconname, size, "hicolor")
icon_cache[tmp] = [time.time(), icon]
return icon
def getIconData(path):
"""Retrieve the data from the .icon file corresponding to the given file. If
there is no .icon file, it returns None.
Example::
getIconData("/usr/share/icons/Tango/scalable/places/folder.svg")
"""
if os.path.isfile(path):
icon_file = os.path.splitext(path)[0] + ".icon"
if os.path.isfile(icon_file):
data = IconData()
data.parse(icon_file)
return data
def __get_themes(themename):
"""Generator yielding IconTheme objects for a specified theme and any themes
from which it inherits.
"""
for dir in icondirs:
theme_file = os.path.join(dir, themename, "index.theme")
if os.path.isfile(theme_file):
break
theme_file = os.path.join(dir, themename, "index.desktop")
if os.path.isfile(theme_file):
break
else:
if debug:
raise NoThemeError(themename)
return
theme = IconTheme()
theme.parse(theme_file)
yield theme
for subtheme in theme.getInherits():
for t in __get_themes(subtheme):
yield t
def LookupIcon(iconname, size, theme, extensions):
# look for the cache
if theme.name not in theme_cache:
theme_cache[theme.name] = []
theme_cache[theme.name].append(time.time() - (xdg.Config.cache_time + 1)) # [0] last time of lookup
theme_cache[theme.name].append(0) # [1] mtime
theme_cache[theme.name].append(dict()) # [2] dir: [subdir, [items]]
# cache stuff (directory lookuped up the in the last 5 seconds?)
if int(time.time() - theme_cache[theme.name][0]) >= xdg.Config.cache_time:
theme_cache[theme.name][0] = time.time()
for subdir in theme.getDirectories():
for directory in icondirs:
dir = os.path.join(directory,theme.name,subdir)
if (dir not in theme_cache[theme.name][2] \
or theme_cache[theme.name][1] < os.path.getmtime(os.path.join(directory,theme.name))) \
and subdir != "" \
and os.path.isdir(dir):
theme_cache[theme.name][2][dir] = [subdir, os.listdir(dir)]
theme_cache[theme.name][1] = os.path.getmtime(os.path.join(directory,theme.name))
for dir, values in theme_cache[theme.name][2].items():
if DirectoryMatchesSize(values[0], size, theme):
for extension in extensions:
if iconname + "." + extension in values[1]:
return os.path.join(dir, iconname + "." + extension)
minimal_size = 2**31
closest_filename = ""
for dir, values in theme_cache[theme.name][2].items():
distance = DirectorySizeDistance(values[0], size, theme)
if distance < minimal_size:
for extension in extensions:
if iconname + "." + extension in values[1]:
closest_filename = os.path.join(dir, iconname + "." + extension)
minimal_size = distance
return closest_filename
def DirectoryMatchesSize(subdir, iconsize, theme):
Type = theme.getType(subdir)
Size = theme.getSize(subdir)
Threshold = theme.getThreshold(subdir)
MinSize = theme.getMinSize(subdir)
MaxSize = theme.getMaxSize(subdir)
if Type == "Fixed":
return Size == iconsize
elif Type == "Scaleable":
return MinSize <= iconsize <= MaxSize
elif Type == "Threshold":
return Size - Threshold <= iconsize <= Size + Threshold
def DirectorySizeDistance(subdir, iconsize, theme):
Type = theme.getType(subdir)
Size = theme.getSize(subdir)
Threshold = theme.getThreshold(subdir)
MinSize = theme.getMinSize(subdir)
MaxSize = theme.getMaxSize(subdir)
if Type == "Fixed":
return abs(Size - iconsize)
elif Type == "Scalable":
if iconsize < MinSize:
return MinSize - iconsize
elif iconsize > MaxSize:
return MaxSize - iconsize
return 0
elif Type == "Threshold":
if iconsize < Size - Threshold:
return MinSize - iconsize
elif iconsize > Size + Threshold:
return iconsize - MaxSize
return 0

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@ -0,0 +1,417 @@
"""
Base Class for DesktopEntry, IconTheme and IconData
"""
import re, os, stat, io
from xdg.Exceptions import (ParsingError, DuplicateGroupError, NoGroupError,
NoKeyError, DuplicateKeyError, ValidationError,
debug)
import xdg.Locale
from xdg.util import u
def is_ascii(s):
"""Return True if a string consists entirely of ASCII characters."""
try:
s.encode('ascii', 'strict')
return True
except UnicodeError:
return False
class IniFile:
defaultGroup = ''
fileExtension = ''
filename = ''
tainted = False
def __init__(self, filename=None):
self.content = dict()
if filename:
self.parse(filename)
def __cmp__(self, other):
return cmp(self.content, other.content)
def parse(self, filename, headers=None):
'''Parse an INI file.
headers -- list of headers the parser will try to select as a default header
'''
# for performance reasons
content = self.content
if not os.path.isfile(filename):
raise ParsingError("File not found", filename)
try:
# The content should be UTF-8, but legacy files can have other
# encodings, including mixed encodings in one file. We don't attempt
# to decode them, but we silence the errors.
fd = io.open(filename, 'r', encoding='utf-8', errors='replace')
except IOError as e:
if debug:
raise e
else:
return
# parse file
with fd:
for line in fd:
line = line.strip()
# empty line
if not line:
continue
# comment
elif line[0] == '#':
continue
# new group
elif line[0] == '[':
currentGroup = line.lstrip("[").rstrip("]")
if debug and self.hasGroup(currentGroup):
raise DuplicateGroupError(currentGroup, filename)
else:
content[currentGroup] = {}
# key
else:
try:
key, value = line.split("=", 1)
except ValueError:
raise ParsingError("Invalid line: " + line, filename)
key = key.strip() # Spaces before/after '=' should be ignored
try:
if debug and self.hasKey(key, currentGroup):
raise DuplicateKeyError(key, currentGroup, filename)
else:
content[currentGroup][key] = value.strip()
except (IndexError, UnboundLocalError):
raise ParsingError("Parsing error on key, group missing", filename)
self.filename = filename
self.tainted = False
# check header
if headers:
for header in headers:
if header in content:
self.defaultGroup = header
break
else:
raise ParsingError("[%s]-Header missing" % headers[0], filename)
# start stuff to access the keys
def get(self, key, group=None, locale=False, type="string", list=False, strict=False):
# set default group
if not group:
group = self.defaultGroup
# return key (with locale)
if (group in self.content) and (key in self.content[group]):
if locale:
value = self.content[group][self.__addLocale(key, group)]
else:
value = self.content[group][key]
else:
if strict or debug:
if group not in self.content:
raise NoGroupError(group, self.filename)
elif key not in self.content[group]:
raise NoKeyError(key, group, self.filename)
else:
value = ""
if list == True:
values = self.getList(value)
result = []
else:
values = [value]
for value in values:
if type == "boolean":
value = self.__getBoolean(value)
elif type == "integer":
try:
value = int(value)
except ValueError:
value = 0
elif type == "numeric":
try:
value = float(value)
except ValueError:
value = 0.0
elif type == "regex":
value = re.compile(value)
elif type == "point":
x, y = value.split(",")
value = int(x), int(y)
if list == True:
result.append(value)
else:
result = value
return result
# end stuff to access the keys
# start subget
def getList(self, string):
if re.search(r"(?<!\\)\;", string):
list = re.split(r"(?<!\\);", string)
elif re.search(r"(?<!\\)\|", string):
list = re.split(r"(?<!\\)\|", string)
elif re.search(r"(?<!\\),", string):
list = re.split(r"(?<!\\),", string)
else:
list = [string]
if list[-1] == "":
list.pop()
return list
def __getBoolean(self, boolean):
if boolean == 1 or boolean == "true" or boolean == "True":
return True
elif boolean == 0 or boolean == "false" or boolean == "False":
return False
return False
# end subget
def __addLocale(self, key, group=None):
"add locale to key according the current lc_messages"
# set default group
if not group:
group = self.defaultGroup
for lang in xdg.Locale.langs:
langkey = "%s[%s]" % (key, lang)
if langkey in self.content[group]:
return langkey
return key
# start validation stuff
def validate(self, report="All"):
"""Validate the contents, raising :class:`~xdg.Exceptions.ValidationError`
if there is anything amiss.
report can be 'All' / 'Warnings' / 'Errors'
"""
self.warnings = []
self.errors = []
# get file extension
self.fileExtension = os.path.splitext(self.filename)[1]
# overwrite this for own checkings
self.checkExtras()
# check all keys
for group in self.content:
self.checkGroup(group)
for key in self.content[group]:
self.checkKey(key, self.content[group][key], group)
# check if value is empty
if self.content[group][key] == "":
self.warnings.append("Value of Key '%s' is empty" % key)
# raise Warnings / Errors
msg = ""
if report == "All" or report == "Warnings":
for line in self.warnings:
msg += "\n- " + line
if report == "All" or report == "Errors":
for line in self.errors:
msg += "\n- " + line
if msg:
raise ValidationError(msg, self.filename)
# check if group header is valid
def checkGroup(self, group):
pass
# check if key is valid
def checkKey(self, key, value, group):
pass
# check random stuff
def checkValue(self, key, value, type="string", list=False):
if list == True:
values = self.getList(value)
else:
values = [value]
for value in values:
if type == "string":
code = self.checkString(value)
if type == "localestring":
continue
elif type == "boolean":
code = self.checkBoolean(value)
elif type == "numeric":
code = self.checkNumber(value)
elif type == "integer":
code = self.checkInteger(value)
elif type == "regex":
code = self.checkRegex(value)
elif type == "point":
code = self.checkPoint(value)
if code == 1:
self.errors.append("'%s' is not a valid %s" % (value, type))
elif code == 2:
self.warnings.append("Value of key '%s' is deprecated" % key)
def checkExtras(self):
pass
def checkBoolean(self, value):
# 1 or 0 : deprecated
if (value == "1" or value == "0"):
return 2
# true or false: ok
elif not (value == "true" or value == "false"):
return 1
def checkNumber(self, value):
# float() ValueError
try:
float(value)
except:
return 1
def checkInteger(self, value):
# int() ValueError
try:
int(value)
except:
return 1
def checkPoint(self, value):
if not re.match("^[0-9]+,[0-9]+$", value):
return 1
def checkString(self, value):
return 0 if is_ascii(value) else 1
def checkRegex(self, value):
try:
re.compile(value)
except:
return 1
# write support
def write(self, filename=None, trusted=False):
if not filename and not self.filename:
raise ParsingError("File not found", "")
if filename:
self.filename = filename
else:
filename = self.filename
if os.path.dirname(filename) and not os.path.isdir(os.path.dirname(filename)):
os.makedirs(os.path.dirname(filename))
with io.open(filename, 'w', encoding='utf-8') as fp:
# An executable bit signifies that the desktop file is
# trusted, but then the file can be executed. Add hashbang to
# make sure that the file is opened by something that
# understands desktop files.
if trusted:
fp.write(u("#!/usr/bin/env xdg-open\n"))
if self.defaultGroup:
fp.write(u("[%s]\n") % self.defaultGroup)
for (key, value) in self.content[self.defaultGroup].items():
fp.write(u("%s=%s\n") % (key, value))
fp.write(u("\n"))
for (name, group) in self.content.items():
if name != self.defaultGroup:
fp.write(u("[%s]\n") % name)
for (key, value) in group.items():
fp.write(u("%s=%s\n") % (key, value))
fp.write(u("\n"))
# Add executable bits to the file to show that it's trusted.
if trusted:
oldmode = os.stat(filename).st_mode
mode = oldmode | stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH
os.chmod(filename, mode)
self.tainted = False
def set(self, key, value, group=None, locale=False):
# set default group
if not group:
group = self.defaultGroup
if locale == True and len(xdg.Locale.langs) > 0:
key = key + "[" + xdg.Locale.langs[0] + "]"
try:
self.content[group][key] = value
except KeyError:
raise NoGroupError(group, self.filename)
self.tainted = (value == self.get(key, group))
def addGroup(self, group):
if self.hasGroup(group):
if debug:
raise DuplicateGroupError(group, self.filename)
else:
self.content[group] = {}
self.tainted = True
def removeGroup(self, group):
existed = group in self.content
if existed:
del self.content[group]
self.tainted = True
else:
if debug:
raise NoGroupError(group, self.filename)
return existed
def removeKey(self, key, group=None, locales=True):
# set default group
if not group:
group = self.defaultGroup
try:
if locales:
for name in list(self.content[group]):
if re.match("^" + key + xdg.Locale.regex + "$", name) and name != key:
del self.content[group][name]
value = self.content[group].pop(key)
self.tainted = True
return value
except KeyError as e:
if debug:
if e == group:
raise NoGroupError(group, self.filename)
else:
raise NoKeyError(key, group, self.filename)
else:
return ""
# misc
def groups(self):
return self.content.keys()
def hasGroup(self, group):
return group in self.content
def hasKey(self, key, group=None):
# set default group
if not group:
group = self.defaultGroup
return key in self.content[group]
def getFileName(self):
return self.filename

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"""
Helper Module for Locale settings
This module is based on a ROX module (LGPL):
http://cvs.sourceforge.net/viewcvs.py/rox/ROX-Lib2/python/rox/i18n.py?rev=1.3&view=log
"""
import os
from locale import normalize
regex = r"(\[([a-zA-Z]+)(_[a-zA-Z]+)?(\.[a-zA-Z0-9-]+)?(@[a-zA-Z]+)?\])?"
def _expand_lang(locale):
locale = normalize(locale)
COMPONENT_CODESET = 1 << 0
COMPONENT_MODIFIER = 1 << 1
COMPONENT_TERRITORY = 1 << 2
# split up the locale into its base components
mask = 0
pos = locale.find('@')
if pos >= 0:
modifier = locale[pos:]
locale = locale[:pos]
mask |= COMPONENT_MODIFIER
else:
modifier = ''
pos = locale.find('.')
codeset = ''
if pos >= 0:
locale = locale[:pos]
pos = locale.find('_')
if pos >= 0:
territory = locale[pos:]
locale = locale[:pos]
mask |= COMPONENT_TERRITORY
else:
territory = ''
language = locale
ret = []
for i in range(mask+1):
if not (i & ~mask): # if all components for this combo exist ...
val = language
if i & COMPONENT_TERRITORY: val += territory
if i & COMPONENT_CODESET: val += codeset
if i & COMPONENT_MODIFIER: val += modifier
ret.append(val)
ret.reverse()
return ret
def expand_languages(languages=None):
# Get some reasonable defaults for arguments that were not supplied
if languages is None:
languages = []
for envar in ('LANGUAGE', 'LC_ALL', 'LC_MESSAGES', 'LANG'):
val = os.environ.get(envar)
if val:
languages = val.split(':')
break
#if 'C' not in languages:
# languages.append('C')
# now normalize and expand the languages
nelangs = []
for lang in languages:
for nelang in _expand_lang(lang):
if nelang not in nelangs:
nelangs.append(nelang)
return nelangs
def update(language=None):
global langs
if language:
langs = expand_languages([language])
else:
langs = expand_languages()
langs = []
update()

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@ -0,0 +1,541 @@
""" CLass to edit XDG Menus """
import os
try:
import xml.etree.cElementTree as etree
except ImportError:
import xml.etree.ElementTree as etree
from xdg.Menu import Menu, MenuEntry, Layout, Separator, XMLMenuBuilder
from xdg.BaseDirectory import xdg_config_dirs, xdg_data_dirs
from xdg.Exceptions import ParsingError
from xdg.Config import setRootMode
# XML-Cleanups: Move / Exclude
# FIXME: proper reverte/delete
# FIXME: pass AppDirs/DirectoryDirs around in the edit/move functions
# FIXME: catch Exceptions
# FIXME: copy functions
# FIXME: More Layout stuff
# FIXME: unod/redo function / remove menu...
# FIXME: Advanced MenuEditing Stuff: LegacyDir/MergeFile
# Complex Rules/Deleted/OnlyAllocated/AppDirs/DirectoryDirs
class MenuEditor(object):
def __init__(self, menu=None, filename=None, root=False):
self.menu = None
self.filename = None
self.tree = None
self.parser = XMLMenuBuilder()
self.parse(menu, filename, root)
# fix for creating two menus with the same name on the fly
self.filenames = []
def parse(self, menu=None, filename=None, root=False):
if root:
setRootMode(True)
if isinstance(menu, Menu):
self.menu = menu
elif menu:
self.menu = self.parser.parse(menu)
else:
self.menu = self.parser.parse()
if root:
self.filename = self.menu.Filename
elif filename:
self.filename = filename
else:
self.filename = os.path.join(xdg_config_dirs[0], "menus", os.path.split(self.menu.Filename)[1])
try:
self.tree = etree.parse(self.filename)
except IOError:
root = etree.fromstring("""
<!DOCTYPE Menu PUBLIC "-//freedesktop//DTD Menu 1.0//EN" "http://standards.freedesktop.org/menu-spec/menu-1.0.dtd">
<Menu>
<Name>Applications</Name>
<MergeFile type="parent">%s</MergeFile>
</Menu>
""" % self.menu.Filename)
self.tree = etree.ElementTree(root)
except ParsingError:
raise ParsingError('Not a valid .menu file', self.filename)
#FIXME: is this needed with etree ?
self.__remove_whitespace_nodes(self.tree)
def save(self):
self.__saveEntries(self.menu)
self.__saveMenu()
def createMenuEntry(self, parent, name, command=None, genericname=None, comment=None, icon=None, terminal=None, after=None, before=None):
menuentry = MenuEntry(self.__getFileName(name, ".desktop"))
menuentry = self.editMenuEntry(menuentry, name, genericname, comment, command, icon, terminal)
self.__addEntry(parent, menuentry, after, before)
self.menu.sort()
return menuentry
def createMenu(self, parent, name, genericname=None, comment=None, icon=None, after=None, before=None):
menu = Menu()
menu.Parent = parent
menu.Depth = parent.Depth + 1
menu.Layout = parent.DefaultLayout
menu.DefaultLayout = parent.DefaultLayout
menu = self.editMenu(menu, name, genericname, comment, icon)
self.__addEntry(parent, menu, after, before)
self.menu.sort()
return menu
def createSeparator(self, parent, after=None, before=None):
separator = Separator(parent)
self.__addEntry(parent, separator, after, before)
self.menu.sort()
return separator
def moveMenuEntry(self, menuentry, oldparent, newparent, after=None, before=None):
self.__deleteEntry(oldparent, menuentry, after, before)
self.__addEntry(newparent, menuentry, after, before)
self.menu.sort()
return menuentry
def moveMenu(self, menu, oldparent, newparent, after=None, before=None):
self.__deleteEntry(oldparent, menu, after, before)
self.__addEntry(newparent, menu, after, before)
root_menu = self.__getXmlMenu(self.menu.Name)
if oldparent.getPath(True) != newparent.getPath(True):
self.__addXmlMove(root_menu, os.path.join(oldparent.getPath(True), menu.Name), os.path.join(newparent.getPath(True), menu.Name))
self.menu.sort()
return menu
def moveSeparator(self, separator, parent, after=None, before=None):
self.__deleteEntry(parent, separator, after, before)
self.__addEntry(parent, separator, after, before)
self.menu.sort()
return separator
def copyMenuEntry(self, menuentry, oldparent, newparent, after=None, before=None):
self.__addEntry(newparent, menuentry, after, before)
self.menu.sort()
return menuentry
def editMenuEntry(self, menuentry, name=None, genericname=None, comment=None, command=None, icon=None, terminal=None, nodisplay=None, hidden=None):
deskentry = menuentry.DesktopEntry
if name:
if not deskentry.hasKey("Name"):
deskentry.set("Name", name)
deskentry.set("Name", name, locale=True)
if comment:
if not deskentry.hasKey("Comment"):
deskentry.set("Comment", comment)
deskentry.set("Comment", comment, locale=True)
if genericname:
if not deskentry.hasKey("GenericName"):
deskentry.set("GenericName", genericname)
deskentry.set("GenericName", genericname, locale=True)
if command:
deskentry.set("Exec", command)
if icon:
deskentry.set("Icon", icon)
if terminal:
deskentry.set("Terminal", "true")
elif not terminal:
deskentry.set("Terminal", "false")
if nodisplay is True:
deskentry.set("NoDisplay", "true")
elif nodisplay is False:
deskentry.set("NoDisplay", "false")
if hidden is True:
deskentry.set("Hidden", "true")
elif hidden is False:
deskentry.set("Hidden", "false")
menuentry.updateAttributes()
if len(menuentry.Parents) > 0:
self.menu.sort()
return menuentry
def editMenu(self, menu, name=None, genericname=None, comment=None, icon=None, nodisplay=None, hidden=None):
# Hack for legacy dirs
if isinstance(menu.Directory, MenuEntry) and menu.Directory.Filename == ".directory":
xml_menu = self.__getXmlMenu(menu.getPath(True, True))
self.__addXmlTextElement(xml_menu, 'Directory', menu.Name + ".directory")
menu.Directory.setAttributes(menu.Name + ".directory")
# Hack for New Entries
elif not isinstance(menu.Directory, MenuEntry):
if not name:
name = menu.Name
filename = self.__getFileName(name, ".directory").replace("/", "")
if not menu.Name:
menu.Name = filename.replace(".directory", "")
xml_menu = self.__getXmlMenu(menu.getPath(True, True))
self.__addXmlTextElement(xml_menu, 'Directory', filename)
menu.Directory = MenuEntry(filename)
deskentry = menu.Directory.DesktopEntry
if name:
if not deskentry.hasKey("Name"):
deskentry.set("Name", name)
deskentry.set("Name", name, locale=True)
if genericname:
if not deskentry.hasKey("GenericName"):
deskentry.set("GenericName", genericname)
deskentry.set("GenericName", genericname, locale=True)
if comment:
if not deskentry.hasKey("Comment"):
deskentry.set("Comment", comment)
deskentry.set("Comment", comment, locale=True)
if icon:
deskentry.set("Icon", icon)
if nodisplay is True:
deskentry.set("NoDisplay", "true")
elif nodisplay is False:
deskentry.set("NoDisplay", "false")
if hidden is True:
deskentry.set("Hidden", "true")
elif hidden is False:
deskentry.set("Hidden", "false")
menu.Directory.updateAttributes()
if isinstance(menu.Parent, Menu):
self.menu.sort()
return menu
def hideMenuEntry(self, menuentry):
self.editMenuEntry(menuentry, nodisplay=True)
def unhideMenuEntry(self, menuentry):
self.editMenuEntry(menuentry, nodisplay=False, hidden=False)
def hideMenu(self, menu):
self.editMenu(menu, nodisplay=True)
def unhideMenu(self, menu):
self.editMenu(menu, nodisplay=False, hidden=False)
xml_menu = self.__getXmlMenu(menu.getPath(True, True), False)
deleted = xml_menu.findall('Deleted')
not_deleted = xml_menu.findall('NotDeleted')
for node in deleted + not_deleted:
xml_menu.remove(node)
def deleteMenuEntry(self, menuentry):
if self.getAction(menuentry) == "delete":
self.__deleteFile(menuentry.DesktopEntry.filename)
for parent in menuentry.Parents:
self.__deleteEntry(parent, menuentry)
self.menu.sort()
return menuentry
def revertMenuEntry(self, menuentry):
if self.getAction(menuentry) == "revert":
self.__deleteFile(menuentry.DesktopEntry.filename)
menuentry.Original.Parents = []
for parent in menuentry.Parents:
index = parent.Entries.index(menuentry)
parent.Entries[index] = menuentry.Original
index = parent.MenuEntries.index(menuentry)
parent.MenuEntries[index] = menuentry.Original
menuentry.Original.Parents.append(parent)
self.menu.sort()
return menuentry
def deleteMenu(self, menu):
if self.getAction(menu) == "delete":
self.__deleteFile(menu.Directory.DesktopEntry.filename)
self.__deleteEntry(menu.Parent, menu)
xml_menu = self.__getXmlMenu(menu.getPath(True, True))
parent = self.__get_parent_node(xml_menu)
parent.remove(xml_menu)
self.menu.sort()
return menu
def revertMenu(self, menu):
if self.getAction(menu) == "revert":
self.__deleteFile(menu.Directory.DesktopEntry.filename)
menu.Directory = menu.Directory.Original
self.menu.sort()
return menu
def deleteSeparator(self, separator):
self.__deleteEntry(separator.Parent, separator, after=True)
self.menu.sort()
return separator
""" Private Stuff """
def getAction(self, entry):
if isinstance(entry, Menu):
if not isinstance(entry.Directory, MenuEntry):
return "none"
elif entry.Directory.getType() == "Both":
return "revert"
elif entry.Directory.getType() == "User" and (
len(entry.Submenus) + len(entry.MenuEntries)
) == 0:
return "delete"
elif isinstance(entry, MenuEntry):
if entry.getType() == "Both":
return "revert"
elif entry.getType() == "User":
return "delete"
else:
return "none"
return "none"
def __saveEntries(self, menu):
if not menu:
menu = self.menu
if isinstance(menu.Directory, MenuEntry):
menu.Directory.save()
for entry in menu.getEntries(hidden=True):
if isinstance(entry, MenuEntry):
entry.save()
elif isinstance(entry, Menu):
self.__saveEntries(entry)
def __saveMenu(self):
if not os.path.isdir(os.path.dirname(self.filename)):
os.makedirs(os.path.dirname(self.filename))
self.tree.write(self.filename, encoding='utf-8')
def __getFileName(self, name, extension):
postfix = 0
while 1:
if postfix == 0:
filename = name + extension
else:
filename = name + "-" + str(postfix) + extension
if extension == ".desktop":
dir = "applications"
elif extension == ".directory":
dir = "desktop-directories"
if not filename in self.filenames and not os.path.isfile(
os.path.join(xdg_data_dirs[0], dir, filename)
):
self.filenames.append(filename)
break
else:
postfix += 1
return filename
def __getXmlMenu(self, path, create=True, element=None):
# FIXME: we should also return the menu's parent,
# to avoid looking for it later on
# @see Element.getiterator()
if not element:
element = self.tree
if "/" in path:
(name, path) = path.split("/", 1)
else:
name = path
path = ""
found = None
for node in element.findall("Menu"):
name_node = node.find('Name')
if name_node.text == name:
if path:
found = self.__getXmlMenu(path, create, node)
else:
found = node
if found:
break
if not found and create:
node = self.__addXmlMenuElement(element, name)
if path:
found = self.__getXmlMenu(path, create, node)
else:
found = node
return found
def __addXmlMenuElement(self, element, name):
menu_node = etree.SubElement('Menu', element)
name_node = etree.SubElement('Name', menu_node)
name_node.text = name
return menu_node
def __addXmlTextElement(self, element, name, text):
node = etree.SubElement(name, element)
node.text = text
return node
def __addXmlFilename(self, element, filename, type_="Include"):
# remove old filenames
includes = element.findall('Include')
excludes = element.findall('Exclude')
rules = includes + excludes
for rule in rules:
#FIXME: this finds only Rules whose FIRST child is a Filename element
if rule[0].tag == "Filename" and rule[0].text == filename:
element.remove(rule)
# shouldn't it remove all occurences, like the following:
#filename_nodes = rule.findall('.//Filename'):
#for fn in filename_nodes:
#if fn.text == filename:
##element.remove(rule)
#parent = self.__get_parent_node(fn)
#parent.remove(fn)
# add new filename
node = etree.SubElement(type_, element)
self.__addXmlTextElement(node, 'Filename', filename)
return node
def __addXmlMove(self, element, old, new):
node = etree.SubElement("Move", element)
self.__addXmlTextElement(node, 'Old', old)
self.__addXmlTextElement(node, 'New', new)
return node
def __addXmlLayout(self, element, layout):
# remove old layout
for node in element.findall("Layout"):
element.remove(node)
# add new layout
node = etree.SubElement("Layout", element)
for order in layout.order:
if order[0] == "Separator":
child = etree.SubElement("Separator", node)
elif order[0] == "Filename":
child = self.__addXmlTextElement(node, "Filename", order[1])
elif order[0] == "Menuname":
child = self.__addXmlTextElement(node, "Menuname", order[1])
elif order[0] == "Merge":
child = etree.SubElement("Merge", node)
child.attrib["type"] = order[1]
return node
def __addLayout(self, parent):
layout = Layout()
layout.order = []
layout.show_empty = parent.Layout.show_empty
layout.inline = parent.Layout.inline
layout.inline_header = parent.Layout.inline_header
layout.inline_alias = parent.Layout.inline_alias
layout.inline_limit = parent.Layout.inline_limit
layout.order.append(["Merge", "menus"])
for entry in parent.Entries:
if isinstance(entry, Menu):
layout.parseMenuname(entry.Name)
elif isinstance(entry, MenuEntry):
layout.parseFilename(entry.DesktopFileID)
elif isinstance(entry, Separator):
layout.parseSeparator()
layout.order.append(["Merge", "files"])
parent.Layout = layout
return layout
def __addEntry(self, parent, entry, after=None, before=None):
if after or before:
if after:
index = parent.Entries.index(after) + 1
elif before:
index = parent.Entries.index(before)
parent.Entries.insert(index, entry)
else:
parent.Entries.append(entry)
xml_parent = self.__getXmlMenu(parent.getPath(True, True))
if isinstance(entry, MenuEntry):
parent.MenuEntries.append(entry)
entry.Parents.append(parent)
self.__addXmlFilename(xml_parent, entry.DesktopFileID, "Include")
elif isinstance(entry, Menu):
parent.addSubmenu(entry)
if after or before:
self.__addLayout(parent)
self.__addXmlLayout(xml_parent, parent.Layout)
def __deleteEntry(self, parent, entry, after=None, before=None):
parent.Entries.remove(entry)
xml_parent = self.__getXmlMenu(parent.getPath(True, True))
if isinstance(entry, MenuEntry):
entry.Parents.remove(parent)
parent.MenuEntries.remove(entry)
self.__addXmlFilename(xml_parent, entry.DesktopFileID, "Exclude")
elif isinstance(entry, Menu):
parent.Submenus.remove(entry)
if after or before:
self.__addLayout(parent)
self.__addXmlLayout(xml_parent, parent.Layout)
def __deleteFile(self, filename):
try:
os.remove(filename)
except OSError:
pass
try:
self.filenames.remove(filename)
except ValueError:
pass
def __remove_whitespace_nodes(self, node):
for child in node:
text = child.text.strip()
if not text:
child.text = ''
tail = child.tail.strip()
if not tail:
child.tail = ''
if len(child):
self.__remove_whilespace_nodes(child)
def __get_parent_node(self, node):
# elements in ElementTree doesn't hold a reference to their parent
for parent, child in self.__iter_parent():
if child is node:
return child
def __iter_parent(self):
for parent in self.tree.getiterator():
for child in parent:
yield parent, child

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@ -0,0 +1,784 @@
"""
This module is based on a rox module (LGPL):
http://cvs.sourceforge.net/viewcvs.py/rox/ROX-Lib2/python/rox/mime.py?rev=1.21&view=log
This module provides access to the shared MIME database.
types is a dictionary of all known MIME types, indexed by the type name, e.g.
types['application/x-python']
Applications can install information about MIME types by storing an
XML file as <MIME>/packages/<application>.xml and running the
update-mime-database command, which is provided by the freedesktop.org
shared mime database package.
See http://www.freedesktop.org/standards/shared-mime-info-spec/ for
information about the format of these files.
(based on version 0.13)
"""
import os
import re
import stat
import sys
import fnmatch
from xdg import BaseDirectory
import xdg.Locale
from xml.dom import minidom, XML_NAMESPACE
from collections import defaultdict
FREE_NS = 'http://www.freedesktop.org/standards/shared-mime-info'
types = {} # Maps MIME names to type objects
exts = None # Maps extensions to types
globs = None # List of (glob, type) pairs
literals = None # Maps liternal names to types
magic = None
PY3 = (sys.version_info[0] >= 3)
def _get_node_data(node):
"""Get text of XML node"""
return ''.join([n.nodeValue for n in node.childNodes]).strip()
def lookup(media, subtype = None):
"""Get the MIMEtype object for the given type.
This remains for backwards compatibility; calling MIMEtype now does
the same thing.
The name can either be passed as one part ('text/plain'), or as two
('text', 'plain').
"""
return MIMEtype(media, subtype)
class MIMEtype(object):
"""Class holding data about a MIME type.
Calling the class will return a cached instance, so there is only one
instance for each MIME type. The name can either be passed as one part
('text/plain'), or as two ('text', 'plain').
"""
def __new__(cls, media, subtype=None):
if subtype is None and '/' in media:
media, subtype = media.split('/', 1)
assert '/' not in subtype
media = media.lower()
subtype = subtype.lower()
try:
return types[(media, subtype)]
except KeyError:
mtype = super(MIMEtype, cls).__new__(cls)
mtype._init(media, subtype)
types[(media, subtype)] = mtype
return mtype
# If this is done in __init__, it is automatically called again each time
# the MIMEtype is returned by __new__, which we don't want. So we call it
# explicitly only when we construct a new instance.
def _init(self, media, subtype):
self.media = media
self.subtype = subtype
self._comment = None
def _load(self):
"Loads comment for current language. Use get_comment() instead."
resource = os.path.join('mime', self.media, self.subtype + '.xml')
for path in BaseDirectory.load_data_paths(resource):
doc = minidom.parse(path)
if doc is None:
continue
for comment in doc.documentElement.getElementsByTagNameNS(FREE_NS, 'comment'):
lang = comment.getAttributeNS(XML_NAMESPACE, 'lang') or 'en'
goodness = 1 + (lang in xdg.Locale.langs)
if goodness > self._comment[0]:
self._comment = (goodness, _get_node_data(comment))
if goodness == 2: return
# FIXME: add get_icon method
def get_comment(self):
"""Returns comment for current language, loading it if needed."""
# Should we ever reload?
if self._comment is None:
self._comment = (0, str(self))
self._load()
return self._comment[1]
def canonical(self):
"""Returns the canonical MimeType object if this is an alias."""
update_cache()
s = str(self)
if s in aliases:
return lookup(aliases[s])
return self
def inherits_from(self):
"""Returns a set of Mime types which this inherits from."""
update_cache()
return set(lookup(t) for t in inheritance[str(self)])
def __str__(self):
return self.media + '/' + self.subtype
def __repr__(self):
return 'MIMEtype(%r, %r)' % (self.media, self.subtype)
def __hash__(self):
return hash(self.media) ^ hash(self.subtype)
class UnknownMagicRuleFormat(ValueError):
pass
class DiscardMagicRules(Exception):
"Raised when __NOMAGIC__ is found, and caught to discard previous rules."
pass
class MagicRule:
also = None
def __init__(self, start, value, mask, word, range):
self.start = start
self.value = value
self.mask = mask
self.word = word
self.range = range
rule_ending_re = re.compile(br'(?:~(\d+))?(?:\+(\d+))?\n$')
@classmethod
def from_file(cls, f):
"""Read a rule from the binary magics file. Returns a 2-tuple of
the nesting depth and the MagicRule."""
line = f.readline()
#print line
# [indent] '>'
nest_depth, line = line.split(b'>', 1)
nest_depth = int(nest_depth) if nest_depth else 0
# start-offset '='
start, line = line.split(b'=', 1)
start = int(start)
if line == b'__NOMAGIC__\n':
raise DiscardMagicRules
# value length (2 bytes, big endian)
if sys.version_info[0] >= 3:
lenvalue = int.from_bytes(line[:2], byteorder='big')
else:
lenvalue = (ord(line[0])<<8)+ord(line[1])
line = line[2:]
# value
# This can contain newlines, so we may need to read more lines
while len(line) <= lenvalue:
line += f.readline()
value, line = line[:lenvalue], line[lenvalue:]
# ['&' mask]
if line.startswith(b'&'):
# This can contain newlines, so we may need to read more lines
while len(line) <= lenvalue:
line += f.readline()
mask, line = line[1:lenvalue+1], line[lenvalue+1:]
else:
mask = None
# ['~' word-size] ['+' range-length]
ending = cls.rule_ending_re.match(line)
if not ending:
# Per the spec, this will be caught and ignored, to allow
# for future extensions.
raise UnknownMagicRuleFormat(repr(line))
word, range = ending.groups()
word = int(word) if (word is not None) else 1
range = int(range) if (range is not None) else 1
return nest_depth, cls(start, value, mask, word, range)
def maxlen(self):
l = self.start + len(self.value) + self.range
if self.also:
return max(l, self.also.maxlen())
return l
def match(self, buffer):
if self.match0(buffer):
if self.also:
return self.also.match(buffer)
return True
def match0(self, buffer):
l=len(buffer)
lenvalue = len(self.value)
for o in range(self.range):
s=self.start+o
e=s+lenvalue
if l<e:
return False
if self.mask:
test=''
for i in range(lenvalue):
if PY3:
c = buffer[s+i] & self.mask[i]
else:
c = ord(buffer[s+i]) & ord(self.mask[i])
test += chr(c)
else:
test = buffer[s:e]
if test==self.value:
return True
def __repr__(self):
return 'MagicRule(start=%r, value=%r, mask=%r, word=%r, range=%r)' %(
self.start,
self.value,
self.mask,
self.word,
self.range)
class MagicMatchAny(object):
"""Match any of a set of magic rules.
This has a similar interface to MagicRule objects (i.e. its match() and
maxlen() methods), to allow for duck typing.
"""
def __init__(self, rules):
self.rules = rules
def match(self, buffer):
return any(r.match(buffer) for r in self.rules)
def maxlen(self):
return max(r.maxlen() for r in self.rules)
@classmethod
def from_file(cls, f):
"""Read a set of rules from the binary magic file."""
c=f.read(1)
f.seek(-1, 1)
depths_rules = []
while c and c != b'[':
try:
depths_rules.append(MagicRule.from_file(f))
except UnknownMagicRuleFormat:
# Ignored to allow for extensions to the rule format.
pass
c=f.read(1)
if c:
f.seek(-1, 1)
# Build the rule tree
tree = [] # (rule, [(subrule,[subsubrule,...]), ...])
insert_points = {0:tree}
for depth, rule in depths_rules:
subrules = []
insert_points[depth].append((rule, subrules))
insert_points[depth+1] = subrules
return cls.from_rule_tree(tree)
@classmethod
def from_rule_tree(cls, tree):
"""From a nested list of (rule, subrules) pairs, build a MagicMatchAny
instance, recursing down the tree.
Where there's only one top-level rule, this is returned directly,
to simplify the nested structure. Returns None if no rules were read.
"""
rules = []
for rule, subrules in tree:
if subrules:
rule.also = cls.from_rule_tree(subrules)
rules.append(rule)
if len(rules)==0:
return None
if len(rules)==1:
return rules[0]
return cls(rules)
class MagicDB:
def __init__(self):
self.bytype = defaultdict(list) # mimetype -> [(priority, rule), ...]
def merge_file(self, fname):
"""Read a magic binary file, and add its rules to this MagicDB."""
with open(fname, 'rb') as f:
line = f.readline()
if line != b'MIME-Magic\0\n':
raise IOError('Not a MIME magic file')
while True:
shead = f.readline().decode('ascii')
#print(shead)
if not shead:
break
if shead[0] != '[' or shead[-2:] != ']\n':
raise ValueError('Malformed section heading', shead)
pri, tname = shead[1:-2].split(':')
#print shead[1:-2]
pri = int(pri)
mtype = lookup(tname)
try:
rule = MagicMatchAny.from_file(f)
except DiscardMagicRules:
self.bytype.pop(mtype, None)
rule = MagicMatchAny.from_file(f)
if rule is None:
continue
#print rule
self.bytype[mtype].append((pri, rule))
def finalise(self):
"""Prepare the MagicDB for matching.
This should be called after all rules have been merged into it.
"""
maxlen = 0
self.alltypes = [] # (priority, mimetype, rule)
for mtype, rules in self.bytype.items():
for pri, rule in rules:
self.alltypes.append((pri, mtype, rule))
maxlen = max(maxlen, rule.maxlen())
self.maxlen = maxlen # Number of bytes to read from files
self.alltypes.sort(key=lambda x: x[0], reverse=True)
def match_data(self, data, max_pri=100, min_pri=0, possible=None):
"""Do magic sniffing on some bytes.
max_pri & min_pri can be used to specify the maximum & minimum priority
rules to look for. possible can be a list of mimetypes to check, or None
(the default) to check all mimetypes until one matches.
Returns the MIMEtype found, or None if no entries match.
"""
if possible is not None:
types = []
for mt in possible:
for pri, rule in self.bytype[mt]:
types.append((pri, mt, rule))
types.sort(key=lambda x: x[0])
else:
types = self.alltypes
for priority, mimetype, rule in types:
#print priority, max_pri, min_pri
if priority > max_pri:
continue
if priority < min_pri:
break
if rule.match(data):
return mimetype
def match(self, path, max_pri=100, min_pri=0, possible=None):
"""Read data from the file and do magic sniffing on it.
max_pri & min_pri can be used to specify the maximum & minimum priority
rules to look for. possible can be a list of mimetypes to check, or None
(the default) to check all mimetypes until one matches.
Returns the MIMEtype found, or None if no entries match. Raises IOError
if the file can't be opened.
"""
with open(path, 'rb') as f:
buf = f.read(self.maxlen)
return self.match_data(buf, max_pri, min_pri, possible)
def __repr__(self):
return '<MagicDB (%d types)>' % len(self.alltypes)
class GlobDB(object):
def __init__(self):
"""Prepare the GlobDB. It can't actually be used until .finalise() is
called, but merge_file() can be used to add data before that.
"""
# Maps mimetype to {(weight, glob, flags), ...}
self.allglobs = defaultdict(set)
def merge_file(self, path):
"""Loads name matching information from a globs2 file."""#
allglobs = self.allglobs
with open(path) as f:
for line in f:
if line.startswith('#'): continue # Comment
fields = line[:-1].split(':')
weight, type_name, pattern = fields[:3]
weight = int(weight)
mtype = lookup(type_name)
if len(fields) > 3:
flags = fields[3].split(',')
else:
flags = ()
if pattern == '__NOGLOBS__':
# This signals to discard any previous globs
allglobs.pop(mtype, None)
continue
allglobs[mtype].add((weight, pattern, tuple(flags)))
def finalise(self):
"""Prepare the GlobDB for matching.
This should be called after all files have been merged into it.
"""
self.exts = defaultdict(list) # Maps extensions to [(type, weight),...]
self.cased_exts = defaultdict(list)
self.globs = [] # List of (regex, type, weight) triplets
self.literals = {} # Maps literal names to (type, weight)
self.cased_literals = {}
for mtype, globs in self.allglobs.items():
mtype = mtype.canonical()
for weight, pattern, flags in globs:
cased = 'cs' in flags
if pattern.startswith('*.'):
# *.foo -- extension pattern
rest = pattern[2:]
if not ('*' in rest or '[' in rest or '?' in rest):
if cased:
self.cased_exts[rest].append((mtype, weight))
else:
self.exts[rest.lower()].append((mtype, weight))
continue
if ('*' in pattern or '[' in pattern or '?' in pattern):
# Translate the glob pattern to a regex & compile it
re_flags = 0 if cased else re.I
pattern = re.compile(fnmatch.translate(pattern), flags=re_flags)
self.globs.append((pattern, mtype, weight))
else:
# No wildcards - literal pattern
if cased:
self.cased_literals[pattern] = (mtype, weight)
else:
self.literals[pattern.lower()] = (mtype, weight)
# Sort globs by weight & length
self.globs.sort(reverse=True, key=lambda x: (x[2], len(x[0].pattern)) )
def first_match(self, path):
"""Return the first match found for a given path, or None if no match
is found."""
try:
return next(self._match_path(path))[0]
except StopIteration:
return None
def all_matches(self, path):
"""Return a list of (MIMEtype, glob weight) pairs for the path."""
return list(self._match_path(path))
def _match_path(self, path):
"""Yields pairs of (mimetype, glob weight)."""
leaf = os.path.basename(path)
# Literals (no wildcards)
if leaf in self.cased_literals:
yield self.cased_literals[leaf]
lleaf = leaf.lower()
if lleaf in self.literals:
yield self.literals[lleaf]
# Extensions
ext = leaf
while 1:
p = ext.find('.')
if p < 0: break
ext = ext[p + 1:]
if ext in self.cased_exts:
for res in self.cased_exts[ext]:
yield res
ext = lleaf
while 1:
p = ext.find('.')
if p < 0: break
ext = ext[p+1:]
if ext in self.exts:
for res in self.exts[ext]:
yield res
# Other globs
for (regex, mime_type, weight) in self.globs:
if regex.match(leaf):
yield (mime_type, weight)
# Some well-known types
text = lookup('text', 'plain')
octet_stream = lookup('application', 'octet-stream')
inode_block = lookup('inode', 'blockdevice')
inode_char = lookup('inode', 'chardevice')
inode_dir = lookup('inode', 'directory')
inode_fifo = lookup('inode', 'fifo')
inode_socket = lookup('inode', 'socket')
inode_symlink = lookup('inode', 'symlink')
inode_door = lookup('inode', 'door')
app_exe = lookup('application', 'executable')
_cache_uptodate = False
def _cache_database():
global globs, magic, aliases, inheritance, _cache_uptodate
_cache_uptodate = True
aliases = {} # Maps alias Mime types to canonical names
inheritance = defaultdict(set) # Maps to sets of parent mime types.
# Load aliases
for path in BaseDirectory.load_data_paths(os.path.join('mime', 'aliases')):
with open(path, 'r') as f:
for line in f:
alias, canonical = line.strip().split(None, 1)
aliases[alias] = canonical
# Load filename patterns (globs)
globs = GlobDB()
for path in BaseDirectory.load_data_paths(os.path.join('mime', 'globs2')):
globs.merge_file(path)
globs.finalise()
# Load magic sniffing data
magic = MagicDB()
for path in BaseDirectory.load_data_paths(os.path.join('mime', 'magic')):
magic.merge_file(path)
magic.finalise()
# Load subclasses
for path in BaseDirectory.load_data_paths(os.path.join('mime', 'subclasses')):
with open(path, 'r') as f:
for line in f:
sub, parent = line.strip().split(None, 1)
inheritance[sub].add(parent)
def update_cache():
if not _cache_uptodate:
_cache_database()
def get_type_by_name(path):
"""Returns type of file by its name, or None if not known"""
update_cache()
return globs.first_match(path)
def get_type_by_contents(path, max_pri=100, min_pri=0):
"""Returns type of file by its contents, or None if not known"""
update_cache()
return magic.match(path, max_pri, min_pri)
def get_type_by_data(data, max_pri=100, min_pri=0):
"""Returns type of the data, which should be bytes."""
update_cache()
return magic.match_data(data, max_pri, min_pri)
def _get_type_by_stat(st_mode):
"""Match special filesystem objects to Mimetypes."""
if stat.S_ISDIR(st_mode): return inode_dir
elif stat.S_ISCHR(st_mode): return inode_char
elif stat.S_ISBLK(st_mode): return inode_block
elif stat.S_ISFIFO(st_mode): return inode_fifo
elif stat.S_ISLNK(st_mode): return inode_symlink
elif stat.S_ISSOCK(st_mode): return inode_socket
return inode_door
def get_type(path, follow=True, name_pri=100):
"""Returns type of file indicated by path.
This function is *deprecated* - :func:`get_type2` is more accurate.
:param path: pathname to check (need not exist)
:param follow: when reading file, follow symbolic links
:param name_pri: Priority to do name matches. 100=override magic
This tries to use the contents of the file, and falls back to the name. It
can also handle special filesystem objects like directories and sockets.
"""
update_cache()
try:
if follow:
st = os.stat(path)
else:
st = os.lstat(path)
except:
t = get_type_by_name(path)
return t or text
if stat.S_ISREG(st.st_mode):
# Regular file
t = get_type_by_contents(path, min_pri=name_pri)
if not t: t = get_type_by_name(path)
if not t: t = get_type_by_contents(path, max_pri=name_pri)
if t is None:
if stat.S_IMODE(st.st_mode) & 0o111:
return app_exe
else:
return text
return t
else:
return _get_type_by_stat(st.st_mode)
def get_type2(path, follow=True):
"""Find the MIMEtype of a file using the XDG recommended checking order.
This first checks the filename, then uses file contents if the name doesn't
give an unambiguous MIMEtype. It can also handle special filesystem objects
like directories and sockets.
:param path: file path to examine (need not exist)
:param follow: whether to follow symlinks
:rtype: :class:`MIMEtype`
.. versionadded:: 1.0
"""
update_cache()
try:
st = os.stat(path) if follow else os.lstat(path)
except OSError:
return get_type_by_name(path) or octet_stream
if not stat.S_ISREG(st.st_mode):
# Special filesystem objects
return _get_type_by_stat(st.st_mode)
mtypes = sorted(globs.all_matches(path), key=(lambda x: x[1]), reverse=True)
if mtypes:
max_weight = mtypes[0][1]
i = 1
for mt, w in mtypes[1:]:
if w < max_weight:
break
i += 1
mtypes = mtypes[:i]
if len(mtypes) == 1:
return mtypes[0][0]
possible = [mt for mt,w in mtypes]
else:
possible = None # Try all magic matches
try:
t = magic.match(path, possible=possible)
except IOError:
t = None
if t:
return t
elif mtypes:
return mtypes[0][0]
elif stat.S_IMODE(st.st_mode) & 0o111:
return app_exe
else:
return text if is_text_file(path) else octet_stream
def is_text_file(path):
"""Guess whether a file contains text or binary data.
Heuristic: binary if the first 32 bytes include ASCII control characters.
This rule may change in future versions.
.. versionadded:: 1.0
"""
try:
f = open(path, 'rb')
except IOError:
return False
with f:
return _is_text(f.read(32))
if PY3:
def _is_text(data):
return not any(b <= 0x8 or 0xe <= b < 0x20 or b == 0x7f for b in data)
else:
def _is_text(data):
return not any(b <= '\x08' or '\x0e' <= b < '\x20' or b == '\x7f' \
for b in data)
_mime2ext_cache = None
_mime2ext_cache_uptodate = False
def get_extensions(mimetype):
"""Retrieve the set of filename extensions matching a given MIMEtype.
Extensions are returned without a leading dot, e.g. 'py'. If no extensions
are registered for the MIMEtype, returns an empty set.
The extensions are stored in a cache the first time this is called.
.. versionadded:: 1.0
"""
global _mime2ext_cache, _mime2ext_cache_uptodate
update_cache()
if not _mime2ext_cache_uptodate:
_mime2ext_cache = defaultdict(set)
for ext, mtypes in globs.exts.items():
for mtype, prio in mtypes:
_mime2ext_cache[mtype].add(ext)
_mime2ext_cache_uptodate = True
return _mime2ext_cache[mimetype]
def install_mime_info(application, package_file):
"""Copy 'package_file' as ``~/.local/share/mime/packages/<application>.xml.``
If package_file is None, install ``<app_dir>/<application>.xml``.
If already installed, does nothing. May overwrite an existing
file with the same name (if the contents are different)"""
application += '.xml'
with open(package_file) as f:
new_data = f.read()
# See if the file is already installed
package_dir = os.path.join('mime', 'packages')
resource = os.path.join(package_dir, application)
for x in BaseDirectory.load_data_paths(resource):
try:
with open(x) as f:
old_data = f.read()
except:
continue
if old_data == new_data:
return # Already installed
global _cache_uptodate
_cache_uptodate = False
# Not already installed; add a new copy
# Create the directory structure...
new_file = os.path.join(BaseDirectory.save_data_path(package_dir), application)
# Write the file...
with open(new_file, 'w') as f:
f.write(new_data)
# Update the database...
command = 'update-mime-database'
if os.spawnlp(os.P_WAIT, command, command, BaseDirectory.save_data_path('mime')):
os.unlink(new_file)
raise Exception("The '%s' command returned an error code!\n" \
"Make sure you have the freedesktop.org shared MIME package:\n" \
"http://standards.freedesktop.org/shared-mime-info/" % command)

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@ -0,0 +1,180 @@
"""
Implementation of the XDG Recent File Storage Specification
http://standards.freedesktop.org/recent-file-spec
"""
import xml.dom.minidom, xml.sax.saxutils
import os, time, fcntl
from xdg.Exceptions import ParsingError
class RecentFiles:
def __init__(self):
self.RecentFiles = []
self.filename = ""
def parse(self, filename=None):
"""Parse a list of recently used files.
filename defaults to ``~/.recently-used``.
"""
if not filename:
filename = os.path.join(os.getenv("HOME"), ".recently-used")
try:
doc = xml.dom.minidom.parse(filename)
except IOError:
raise ParsingError('File not found', filename)
except xml.parsers.expat.ExpatError:
raise ParsingError('Not a valid .menu file', filename)
self.filename = filename
for child in doc.childNodes:
if child.nodeType == xml.dom.Node.ELEMENT_NODE:
if child.tagName == "RecentFiles":
for recent in child.childNodes:
if recent.nodeType == xml.dom.Node.ELEMENT_NODE:
if recent.tagName == "RecentItem":
self.__parseRecentItem(recent)
self.sort()
def __parseRecentItem(self, item):
recent = RecentFile()
self.RecentFiles.append(recent)
for attribute in item.childNodes:
if attribute.nodeType == xml.dom.Node.ELEMENT_NODE:
if attribute.tagName == "URI":
recent.URI = attribute.childNodes[0].nodeValue
elif attribute.tagName == "Mime-Type":
recent.MimeType = attribute.childNodes[0].nodeValue
elif attribute.tagName == "Timestamp":
recent.Timestamp = int(attribute.childNodes[0].nodeValue)
elif attribute.tagName == "Private":
recent.Prviate = True
elif attribute.tagName == "Groups":
for group in attribute.childNodes:
if group.nodeType == xml.dom.Node.ELEMENT_NODE:
if group.tagName == "Group":
recent.Groups.append(group.childNodes[0].nodeValue)
def write(self, filename=None):
"""Write the list of recently used files to disk.
If the instance is already associated with a file, filename can be
omitted to save it there again.
"""
if not filename and not self.filename:
raise ParsingError('File not found', filename)
elif not filename:
filename = self.filename
with open(filename, "w") as f:
fcntl.lockf(f, fcntl.LOCK_EX)
f.write('<?xml version="1.0"?>\n')
f.write("<RecentFiles>\n")
for r in self.RecentFiles:
f.write(" <RecentItem>\n")
f.write(" <URI>%s</URI>\n" % xml.sax.saxutils.escape(r.URI))
f.write(" <Mime-Type>%s</Mime-Type>\n" % r.MimeType)
f.write(" <Timestamp>%s</Timestamp>\n" % r.Timestamp)
if r.Private == True:
f.write(" <Private/>\n")
if len(r.Groups) > 0:
f.write(" <Groups>\n")
for group in r.Groups:
f.write(" <Group>%s</Group>\n" % group)
f.write(" </Groups>\n")
f.write(" </RecentItem>\n")
f.write("</RecentFiles>\n")
fcntl.lockf(f, fcntl.LOCK_UN)
def getFiles(self, mimetypes=None, groups=None, limit=0):
"""Get a list of recently used files.
The parameters can be used to filter by mime types, by group, or to
limit the number of items returned. By default, the entire list is
returned, except for items marked private.
"""
tmp = []
i = 0
for item in self.RecentFiles:
if groups:
for group in groups:
if group in item.Groups:
tmp.append(item)
i += 1
elif mimetypes:
for mimetype in mimetypes:
if mimetype == item.MimeType:
tmp.append(item)
i += 1
else:
if item.Private == False:
tmp.append(item)
i += 1
if limit != 0 and i == limit:
break
return tmp
def addFile(self, item, mimetype, groups=None, private=False):
"""Add a recently used file.
item should be the URI of the file, typically starting with ``file:///``.
"""
# check if entry already there
if item in self.RecentFiles:
index = self.RecentFiles.index(item)
recent = self.RecentFiles[index]
else:
# delete if more then 500 files
if len(self.RecentFiles) == 500:
self.RecentFiles.pop()
# add entry
recent = RecentFile()
self.RecentFiles.append(recent)
recent.URI = item
recent.MimeType = mimetype
recent.Timestamp = int(time.time())
recent.Private = private
if groups:
recent.Groups = groups
self.sort()
def deleteFile(self, item):
"""Remove a recently used file, by URI, from the list.
"""
if item in self.RecentFiles:
self.RecentFiles.remove(item)
def sort(self):
self.RecentFiles.sort()
self.RecentFiles.reverse()
class RecentFile:
def __init__(self):
self.URI = ""
self.MimeType = ""
self.Timestamp = ""
self.Private = False
self.Groups = []
def __cmp__(self, other):
return cmp(self.Timestamp, other.Timestamp)
def __lt__ (self, other):
return self.Timestamp < other.Timestamp
def __eq__(self, other):
return self.URI == str(other)
def __str__(self):
return self.URI

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__all__ = [ "BaseDirectory", "DesktopEntry", "Menu", "Exceptions", "IniFile", "IconTheme", "Locale", "Config", "Mime", "RecentFiles", "MenuEditor" ]
__version__ = "0.27"

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import sys
PY3 = sys.version_info[0] >= 3
if PY3:
def u(s):
return s
else:
# Unicode-like literals
def u(s):
return s.decode('utf-8')
try:
# which() is available from Python 3.3
from shutil import which
except ImportError:
import os
# This is a copy of which() from Python 3.3
def which(cmd, mode=os.F_OK | os.X_OK, path=None):
"""Given a command, mode, and a PATH string, return the path which
conforms to the given mode on the PATH, or None if there is no such
file.
`mode` defaults to os.F_OK | os.X_OK. `path` defaults to the result
of os.environ.get("PATH"), or can be overridden with a custom search
path.
"""
# Check that a given file can be accessed with the correct mode.
# Additionally check that `file` is not a directory, as on Windows
# directories pass the os.access check.
def _access_check(fn, mode):
return (os.path.exists(fn) and os.access(fn, mode)
and not os.path.isdir(fn))
# If we're given a path with a directory part, look it up directly rather
# than referring to PATH directories. This includes checking relative to the
# current directory, e.g. ./script
if os.path.dirname(cmd):
if _access_check(cmd, mode):
return cmd
return None
path = (path or os.environ.get("PATH", os.defpath)).split(os.pathsep)
if sys.platform == "win32":
# The current directory takes precedence on Windows.
if not os.curdir in path:
path.insert(0, os.curdir)
# PATHEXT is necessary to check on Windows.
pathext = os.environ.get("PATHEXT", "").split(os.pathsep)
# See if the given file matches any of the expected path extensions.
# This will allow us to short circuit when given "python.exe".
# If it does match, only test that one, otherwise we have to try
# others.
if any(cmd.lower().endswith(ext.lower()) for ext in pathext):
files = [cmd]
else:
files = [cmd + ext for ext in pathext]
else:
# On other platforms you don't have things like PATHEXT to tell you
# what file suffixes are executable, so just pass on cmd as-is.
files = [cmd]
seen = set()
for dir in path:
normdir = os.path.normcase(dir)
if not normdir in seen:
seen.add(normdir)
for thefile in files:
name = os.path.join(dir, thefile)
if _access_check(name, mode):
return name
return None