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# Copyright 2010-2011 Florent Le Coz <louiz@louiz.org>
#
# This file is part of Poezio.
#
# Poezio is free software: you can redistribute it and/or modify
# it under the terms of the MIT license. See the COPYING file.
"""
various useful functions
"""
from datetime import datetime, timedelta
import base64
import os
import mimetypes
import hashlib
import subprocess
import curses
import time
import shlex
from config import config
ROOM_STATE_NONE = 11
ROOM_STATE_CURRENT = 10
ROOM_STATE_PRIVATE = 15
ROOM_STATE_MESSAGE = 12
ROOM_STATE_HL = 13
def get_base64_from_file(path):
"""
Convert the content of a file to base64
"""
if not os.path.isfile(path):
return (None, None, "File does not exist")
size = os.path.getsize(path)
if size > 16384:
return (None, None,"File is too big")
fdes = open(path, 'rb')
data = fdes.read()
encoded = base64.encodestring(data)
sha1 = hashlib.sha1(data).hexdigest()
mime_type = mimetypes.guess_type(path)[0]
return (encoded, mime_type, sha1)
def get_output_of_command(command):
"""
Runs a command and returns its output
"""
try:
return subprocess.check_output(command.split()).decode('utf-8').split('\n')
except subprocess.CalledProcessError:
return None
def is_in_path(command, return_abs_path=False):
"""
Return True if 'command' is found in one of the directories in the user's
path. If 'return_abs_path' is True, return the absolute path of the first
found command instead. Return False otherwise and on errors
"""
for directory in os.getenv('PATH').split(os.pathsep):
try:
if command in os.listdir(directory):
if return_abs_path:
return os.path.join(directory, command)
else:
return True
except OSError:
# If the user has non directories in his path
pass
return False
DISTRO_INFO = {
'Arch Linux': '/etc/arch-release',
'Aurox Linux': '/etc/aurox-release',
'Conectiva Linux': '/etc/conectiva-release',
'CRUX': '/usr/bin/crux',
'Debian GNU/Linux': '/etc/debian_version',
'Fedora Linux': '/etc/fedora-release',
'Gentoo Linux': '/etc/gentoo-release',
'Linux from Scratch': '/etc/lfs-release',
'Mandrake Linux': '/etc/mandrake-release',
'Slackware Linux': '/etc/slackware-version',
'Solaris/Sparc': '/etc/release',
'Source Mage': '/etc/sourcemage_version',
'SUSE Linux': '/etc/SuSE-release',
'Sun JDS': '/etc/sun-release',
'PLD Linux': '/etc/pld-release',
'Yellow Dog Linux': '/etc/yellowdog-release',
# many distros use the /etc/redhat-release for compatibility
# so Redhat is the last
'Redhat Linux': '/etc/redhat-release'
}
def get_os_info():
"""
Returns a detailed and well formated string containing
informations about the operating system
"""
if os.name == 'posix':
executable = 'lsb_release'
params = ' --description --codename --release --short'
full_path_to_executable = is_in_path(executable, return_abs_path = True)
if full_path_to_executable:
command = executable + params
process = subprocess.Popen([command], shell=True,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
close_fds=True)
process.wait()
output = process.stdout.readline().decode('utf-8').strip()
# some distros put n/a in places, so remove those
output = output.replace('n/a', '').replace('N/A', '')
return output
# lsb_release executable not available, so parse files
for distro_name in DISTRO_INFO:
path_to_file = DISTRO_INFO[distro_name]
if os.path.exists(path_to_file):
if os.access(path_to_file, os.X_OK):
# the file is executable (f.e. CRUX)
# yes, then run it and get the first line of output.
text = get_output_of_command(path_to_file)[0]
else:
fdes = open(path_to_file)
text = fdes.readline().strip() # get only first line
fdes.close()
if path_to_file.endswith('version'):
# sourcemage_version and slackware-version files
# have all the info we need (name and version of distro)
if not os.path.basename(path_to_file).startswith(
'sourcemage') or not\
os.path.basename(path_to_file).startswith('slackware'):
text = distro_name + ' ' + text
elif path_to_file.endswith('aurox-release') or \
path_to_file.endswith('arch-release'):
# file doesn't have version
text = distro_name
elif path_to_file.endswith('lfs-release'):
# file just has version
text = distro_name + ' ' + text
os_info = text.replace('\n', '')
return os_info
# our last chance, ask uname and strip it
uname_output = get_output_of_command('uname -sr')
if uname_output is not None:
os_info = uname_output[0] # only first line
return os_info
os_info = 'N/A'
return os_info
def datetime_tuple(timestamp):
"""
Convert timestamp using strptime and the format: %Y%m%dT%H:%M:%S
Because of various datetime formats are used the following exceptions
are handled:
- Optional milliseconds appened to the string are removed
- Optional Z (that means UTC) appened to the string are removed
- XEP-082 datetime strings have all '-' cahrs removed to meet
the above format.
"""
timestamp = timestamp.split('.')[0]
timestamp = timestamp.replace('-', '')
try:
ret = datetime.strptime(timestamp, '%Y%m%dT%H:%M:%SZ')
except ValueError: # Support the deprecated format, XEP 0091 :(
ret = datetime.strptime(timestamp, '%Y%m%dT%H:%M:%S')
# convert UTC to local time, with DST etc.
dst = timedelta(seconds=time.altzone)
ret -= dst
return ret
def shell_split(st):
sh = shlex.shlex(st, posix=True)
sh.whitespace_split = True
sh.quotes = '"'
ret = list()
try:
w = sh.get_token()
while w is not None:
ret.append(w)
w = sh.get_token()
return ret
except ValueError:
return st.split(" ")
def curses_color_pair(color):
if color < 0:
return curses.color_pair(-color) | curses.A_BOLD
return curses.color_pair(color)
def replace_key_with_bound(key):
if config.has_option('bindings', key):
return config.get(key, key, 'bindings')
else:
return key
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