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# -*- python -*-
'''
xpybar – xmobar replacement written in python
Copyright © 2014, 2015, 2016 Mattias Andrée (maandree@member.fsf.org)
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 3 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, see <http://www.gnu.org/licenses/>.
'''
class Application:
'''
Applications and .desktop files
@variable desktop_file:str The .desktop file for the application
@variable settings:dict<str?, dict<str, dict<str?, str>>> Section → key → locale → value map of settings
'''
def __init__(self, file):
'''
Constructor
@param file:str The .desktop file if it contains '/', otherwise the name of the application
'''
import os
if '/' not in file:
import pwd
directories = []
home = pwd.getpwuid(os.getuid()).pw_dir
directories.append('%s/.local/share/applications' % home)
if 'HOME' in os.environ:
if not os.environ['HOME'] == home:
home = os.environ['HOME']
directories.append('%s/.local/share/applications' % home)
directories += ['/usr/local/share/applications', '/usr/share/applications', '/share/applications']
directories = [d for d in directories if os.path.exists(d) and os.path.isdir(d)]
file = ['%s/%s.desktop' % (d, file) for d in directories]
file = [f for f in file if os.path.exists(f) and os.path.isfile(f)]
if len(file) == 0:
raise Exception('Application not found')
file = file[0]
self.desktop_file = file
with open(self.desktop_file, 'rb') as file:
data = file.read()
data = [l for l in data.decode('utf-8', 'replace').replace('\r', '\n').split('\n') if not l == '']
section = None
self.settings = {}
for line in data:
line = line.strip()
if line.startswith('[') and line.endswith(']'):
section = line[1 : -1]
elif line.startswith(';') or line.startswith('#'):
pass
elif (':' in line) or ('=' in line):
line_e = line.split('=')
line_c = line.split(':')
if len(line_e[0]) < len(line_c[0]):
first = '='
line = line_e
else:
first = ':'
line = line_c
key, value = line[0].rstrip(), first.join(line[1:]).lstrip()
locale = None
if ('[' in key) and key.endswith(']'):
key = key[:-1].split('[')
key, locale = '['.join(key[:-1]), key[-1]
if section not in self.settings:
self.settings[section] = {}
section_map = self.settings[section]
if key not in section_map:
section_map[key] = {}
key_map = section_map[key]
if locale not in key_map:
key_map[locale] = value
self.locales = [None]
if 'LANG' in os.environ:
locale = os.environ['LANG']
elif 'LOCALE' in os.environ:
locale = os.environ['LOCALE']
else:
return
locale = locale.split(' ')[0].split('.')[0].split('_')
for i in range(len(locale)):
self.locales.append('_'.join(locale[:i]))
self.locales.reverse()
def get_setting(self, key, section = 'Desktop Entry', locales = None):
'''
Read a setting in the application's .desktop file
@param key:str The key
@param section:str? The section where the key is located
@param locale:list<str?>? Acceptable locales in order of preference,
`None` to use the default for your locale
'''
map = self.settings
if section not in map:
return None
map = map[section]
if key not in map:
return None
map = map[key]
if locales is None:
locales = self.locales
for locale in locales:
if locale in map:
return map[locale]
return None
@staticmethod
def strip_placeholders(text):
'''
Remove placeholders form an exec string
@param text:str The exec string with placeholders
@return :str The exec string without placeholders
'''
buf, esc = '', False
for c in text:
if esc:
esc = False
if c == '%':
buf += c
elif c == '%':
esc = True
else:
buf += c
return buf
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