diff options
| -rw-r--r-- | DEPENDENCIES | 1 | ||||
| -rw-r--r-- | Makefile | 5 | ||||
| -rw-r--r-- | examples/plugins/inotify | 46 | ||||
| -rw-r--r-- | src/plugins/inotify.py | 59 |
4 files changed, 109 insertions, 2 deletions
diff --git a/DEPENDENCIES b/DEPENDENCIES index fd0f7ac..737bf3d 100644 --- a/DEPENDENCIES +++ b/DEPENDENCIES @@ -15,6 +15,7 @@ OPTIONAL RUNTIME DEPENDENCIES: python-pytz: for timezone support python-sysv-ipc: for ropty example iputils: for ping support + inotify-tools: for inotify support BUILD DEPENDENCIES: @@ -32,12 +32,13 @@ PLUGINS = chase clock cpuinfo cpuonline cpu df discstats ipaddress \ kmsg leapsec linereader loadavg lunar mem moc network \ pacman snmp snmp6 softirqs solar uname uptime users \ vmstat weather xdisplay xkb alsa dentrystate inodestate \ - files hdparm tzclock ropty ping + files hdparm tzclock ropty ping inotify PLUGIN_EXAMPLES = chase clock cpu cpuinfo cpuonline df discstats \ ipaddress kmsg loadavg lunar mem moc network \ pacman uname uptime users xdisplay xkb alsa \ - dentrystate inodestate files tzclock ropty ping + dentrystate inodestate files tzclock ropty ping \ + inotify EXAMPLES = mixed moderate test xmonad diff --git a/examples/plugins/inotify b/examples/plugins/inotify new file mode 100644 index 0000000..d2a4afb --- /dev/null +++ b/examples/plugins/inotify @@ -0,0 +1,46 @@ +# -*- python -*- + +# A xpybar configuration example testing the features of plugins.inotify +# It also shows how you can monitor `featherweight` + +import os +import threading + +from plugins.inotify import Inotify + + +OUTPUT, HEIGHT, YPOS, TOP = 0, 12, 24, True + + +def inotify(_line): + global news + semaphore.acquire() + try: + news = news_update_() + bar.invalidate() + finally: + semaphore.release() + +def news_update_(): + try: + with open(featherweight_status_file, 'rb') as file: + status = int(file.read().decode('utf-8', 'replace').replace('\n', '')) + except: + status = 0 + colour = '31' + if status <= 0: colour = '0' + elif status <= 5: colour = '32' + elif status <= 10: colour = '33' + return 'News: \033[%sm%i\033[0m' % (colour, status) + +featherweight_status_file = '%s/.var/lib/featherweight/status' % os.environ['HOME'] +news = news_update_() +semaphore = threading.Semaphore() + +Inotify(inotify, featherweight_status_file, events = ['close_write']) + + +def redraw(): + bar.clear() + bar.draw_coloured_text(0, 10, 0, 2, news) + diff --git a/src/plugins/inotify.py b/src/plugins/inotify.py new file mode 100644 index 0000000..5cf2d73 --- /dev/null +++ b/src/plugins/inotify.py @@ -0,0 +1,59 @@ +# -*- python -*- +''' +xpybar – xmobar replacement written in python +Copyright © 2014 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/>. +''' + +import os + +from util import * + +from plugins.linereader import LineReader + + + +class Inotify: + ''' + File access monitor + ''' + + def __init__(self, callback, *arguments, events = None): + ''' + Constructor + + @param callback:(str)→void Function that will be called everytime a line is read from + `inotifywait`'s standard output, the parameter will be that line, + note that this will not be asynchronously, you may want to specify + something like `lambda : async(fun)` for that, and use semaphores + in `fun`. + @param arguments:*str The files and directories you want to watch and any addition + argument you want to pass to `inotifywait` + @param event:itr<str>? Event you want reported, see "EVENTS" under `inotifywait`'s man page + ''' + command = ['inotifywait', '-m'] + if events is not None: + if isinstance(events, str): + events = [events] + for event in events: + command.append('-e') + command.append(event) + command += list(arguments) + def start(): + with LineReader(spawn(*command)) as reader: + while True: + callback(reader.next()) + async(start) + |