222 lines
7.7 KiB
Python
Executable File
222 lines
7.7 KiB
Python
Executable File
#!/usr/bin/python
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# LADITools - Linux Audio Desktop Integration Tools
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# ladi-system-log - A log viewer for your Linux Audio Desktop
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# Copyright (C) 2011-2012 Alessio Treglia <quadrispro@ubuntu.com>
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# Copyright (C) 2007-2010, Marc-Olivier Barre <marco@marcochapeau.org>
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# Copyright (C) 2007-2009, Nedko Arnaudov <nedko@arnaudov.name>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import os
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import sys
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import signal
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from subprocess import Popen, PIPE
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import pty
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import termios
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import tty
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import gettext
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import argparse
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from laditools import _gettext_domain
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gettext.install(_gettext_domain)
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from laditools import get_version_string
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from laditools import LadiConfiguration
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from laditools import LadiApp
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import gi
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gi.require_version('Gtk', '3.0')
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from gi.repository import GLib
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from gi.repository import Gtk
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from gi.repository import GObject
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gi.require_version('Vte', '2.91')
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from gi.repository import Vte
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from laditools.gtk import find_data_file
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timeout_add = GLib.timeout_add
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# Default configuration
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max_lines_default = 100
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# Output the last <lines> lines
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def read_last(lfile, lines):
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chunk_size = lines * 60
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lfile.seek(0, 2)
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endpos = lfile.tell()
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pos = endpos - chunk_size
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if pos < 0:
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pos = 0
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backlog = ''
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backlog_size = 0
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lines += 1
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while pos >= 0 and backlog_size <= lines:
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lfile.seek(pos, 0)
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s = lfile.read(chunk_size)
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pos = pos - chunk_size
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backlog_size += s.count("\n")
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backlog = s + backlog
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backlog = backlog.strip().split("\n")
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if len(backlog) > lines:
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backlog = backlog[-lines:]
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lfile.seek(endpos, 0)
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return backlog
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class LadiSystemLog(LadiApp):
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_appname = 'ladi-system-log'
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_appname_long = _("LADI Log Viewer")
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_appid = 'org.linuxaudio.ladi.logviewer'
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_default_config = { 'max_lines' : max_lines_default }
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def __init__ (self):
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LadiApp.__init__(self)
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self.log_files = [
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{
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'name': 'JACK',
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'config_name': 'jackdbus_log',
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'config_default': os.sep.join([os.environ['HOME'], ".log", "jack", "jackdbus.log"])
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},
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{
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'name': 'LADISH',
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'config_name': 'ladish_log',
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'config_default': os.sep.join([os.environ['HOME'], ".log", "ladish", "ladish.log"])
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},
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{
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'name': 'A2J',
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'config_name': 'a2j_log',
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'config_default': os.sep.join([os.environ['HOME'], ".log", "a2j", "a2j.log"])
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},
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]
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# Handle the configuration
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for log in self.log_files:
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self._default_config[log['config_name']] = log['config_default']
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self.global_config = LadiConfiguration (self.appname, self._default_config)
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self.param_dict = self.global_config.get_config_section (self.appname)
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self.connect_signals_quit()
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for log in self.log_files[:]:
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log['logfile_path'] = self.param_dict[log['config_name']]
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# skip logfiles that dont exist
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if not os.access(log['logfile_path'], os.R_OK):
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self.log_files.remove(log)
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sys.stderr.write( _("Skipping '%s' because it does not exist\n") % log['logfile_path'])
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else:
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sys.stderr.write( _("Watching %s\n") % log['logfile_path'])
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sys.stderr.flush()
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max_lines_text = self.param_dict['max_lines']
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self.max_lines = int (max_lines_text)
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# Load the glade file
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uifile = find_data_file('ladi-system-log.ui')
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builder = Gtk.Builder()
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builder.add_from_file(uifile)
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sys.stderr.write( _("Loading interface from %s\n") % uifile)
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sys.stderr.flush()
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# Get the ui ready for action
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self.event_dict = {"on_ladilog_ui_destroy" : self.quit,
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"on_ladilog_ui_delete" : self.on_delete,
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"on_close_button_clicked" : self.quit,
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"on_clear_button_clicked" : self.on_clear_text,
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"on_purge_button_clicked" : self.on_purge}
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builder.connect_signals(self.event_dict)
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self.ui = ui = builder.get_object("ladilog_ui")
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self.logview_notebook = builder.get_object ("ladilog_notebook")
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# Create our terminal and display it
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for log in self.log_files:
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log['scrolled_window'] = sw = Gtk.ScrolledWindow()
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log['term'] = term = Vte.Terminal.new ()
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sw.set_policy(hscrollbar_policy=Gtk.PolicyType.AUTOMATIC,
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vscrollbar_policy=Gtk.PolicyType.ALWAYS)
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sw.add(term)
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sw.show()
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term.set_scroll_on_output(True)
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log["tab_label"] = Gtk.Label(label=log["name"])
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self.logview_notebook.append_page(log["scrolled_window"],
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log["tab_label"])
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# Make it do something...
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for log in self.log_files:
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try:
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log['log_file'] = open(log['logfile_path'], "r")
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sys.stderr.write (_("Opening %s...\n") % log['logfile_path'])
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lines = read_last(log['log_file'], self.max_lines)
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for line in lines:
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line = line.strip('\r\n') + '\r\n';
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log["term"].feed(bytes(line, "utf-8"))
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except ValueError:
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sys.stderr.write( _("You called Popen with invalid arguments... dumbass\n") )
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except:
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sys.stderr.write( _("Unexpected error: %s\n") % (sys.exc_info ()[0]))
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finally:
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sys.stderr.flush()
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self.auto_updater = timeout_add(250, self.update, None)
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def update(self, user_data = None):
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# Append latest output to the buffer
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for log in self.log_files:
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line = log['log_file'].readline()
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while line:
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log["term"].feed(bytes(line + '\r', "utf-8"))
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line = log['log_file'].readline()
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log['log_file'].seek(log['log_file'].tell())
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return True
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def on_delete(self, widget=None, data=None):
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return False
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def quit (self, *args, **kwargs):
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self.global_config.set_config_section (self.appname, self.param_dict)
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self.global_config.save ()
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Gtk.main_quit ()
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def on_clear_text (self, data=None):
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current_view = self.logview_notebook.get_current_page ()
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self.log_files[current_view]["term"].feed(bytes("\033[2J\033[;f", "utf-8"))
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def on_purge (self, data=None):
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current_view = self.logview_notebook.get_current_page ()
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# Opens the file in write anew mode thus clearing the file and close it right away
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open (self.log_files[current_view]['logfile_path'], "w+")
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self.log_files[current_view]["term"].feed(bytes("\033[2J\033[;f", "utf-8"))
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def run (self):
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self.ui.show_all()
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Gtk.main ()
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if __name__ == '__main__':
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parser = argparse.ArgumentParser(description=_('JACK, ladish and a2jmidid log viewer'),
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epilog=_('This program is part of the LADITools suite.'))
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parser.add_argument('--version', action='version', version="%(prog)s " + get_version_string())
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parser.parse_args()
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Gtk.init(None)
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LadiSystemLog().run()
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sys.exit(0)
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