Script: logsize.py

Display size of current log file in a bar item.
Author: nils_2 — Version: 0.4 — License: GPL3
For WeeChat ≥ 0.3.0.
Tags: log, item, py2, py3
Added: 2012-01-27 — Updated: 2019-07-13

Download GitHub Repository

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
# -*- coding: utf-8 -*-
#
# Copyright (c) 2012-2019 by nils_2 <weechatter@arcor.de>
#
# Display size of current logfile in item-bar
#
# 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/>.
#
# 2019-07-12: nils_2 (freenode.#weechat)
#       0.4 : option "display" is evaluated
#           : use hook_process("wc") to not stall weechat anymore
#           : new function: refresh only on buffer/window switch
#           : make script compatible with Python 3.x
# 2013-01-07: nils_2 (freenode.#weechat)
#       0.3 : missing logfile caused a crash (thanks swimmer)
#           : add support of more than one window
#           : two new options "log_disabled" and "file_not_found"
# 2012-11-22: nils_2 (freenode.#weechat)
#       0.2 : bug on first startup removed (thanks swimmer)
# 2012-01-14: nils_2 (freenode.#weechat)
#       0.1 : initial release
#
# How to use:
# add item "logsize" to option "weechat.bar.status.items"
#
# Development is currently hosted at
# https://github.com/weechatter/weechat-scripts

from __future__ import print_function
from builtins import str

try:
    import weechat, re

except Exception:
    print("This script must be run under WeeChat.")
    print("Get WeeChat now at: https://weechat.org")
    quit()

SCRIPT_NAME     = "logsize"
SCRIPT_AUTHOR   = "nils_2 <weechatter@arcor.de>"
SCRIPT_VERSION  = "0.4"
SCRIPT_LICENSE  = "GPL"
SCRIPT_DESC     = "display size of current logfile in item-bar"
OPTIONS         = { "refresh"       : ("0","refresh timer (in seconds). 0 = refresh only on buffer or window switch. this is the default setting"),
                    "size"          : ("KB","display length in KB/MB/GB/TB. Leave option empty for byte"),
                    "display"       : ("%L","possible item: %W = words, %L = lines or %F = file length. (content is evaluated, e.g. you can use colors with format \"${color:xxx}\", see /help eval)"),
                    "log_disabled"  : ("","displays a text in item, when logger is disabled for buffer"),
                    "file_not_found": ("","displays a text in item, when logfile wasn't found"),
                    }

hooks           = { "timer": "", "bar_item": "" }
hook_process_out = []
output          = ""

# regexp to match ${color} tags
regex_color=re.compile('\$\{([^\{\}]+)\}')

# regexp to match ${optional string} tags
regex_optional_tags=re.compile('%\{[^\{\}]+\}')

# ================================[ size ]===============================
def sizecheck(filesize):
    filesize = int(filesize)
    if OPTIONS["size"].lower() == "kb":
        filesize = "%.2f" % (filesize / 1024)
        size = "K"
    elif OPTIONS["size"].lower() == "mb":
        filesize = "%.2f" % (filesize / 1024 / 1024)
        size = "M"
    elif OPTIONS["size"].lower() == "gb":
        filesize = "%.2f" % (filesize / 1024 / 1024 / 1024)
        size = "G"
    elif OPTIONS["size"].lower() == "tb":
        filesize = "%.2f" % (filesize / 1024 / 1024 / 1024 / 1024)
        size = "T"
    else:
        filesize = "%.0f" % filesize
        size = "b"
    return "%s%s" % (filesize,size)

# ================================[ weechat item ]===============================
def show_item (data, item, window):
    global output
    return output

def get_file_information(ptr_buffer):
    global hook_process_out, output

    (logfile,log_enabled) = get_logfile(ptr_buffer)
    if not log_enabled:
        output = OPTIONS["log_disabled"]
        return

    output = ''
    if logfile != '':
        # newline / word / bytes / filename
        weechat.hook_process("wc %s" % logfile, 50000, "my_hook_process_cb", "")
        if hook_process_out:
            lines = hook_process_out[0]
            words = hook_process_out[1]
            flength = sizecheck(hook_process_out[2])

            tags = {'%L': str(lines),
                    '%W': str(words),
                    '%F': str(flength)}

            output = substitute_colors(OPTIONS['display'])
            # replace mandatory tags
            for tag in list(tags.keys()):
                #    for tag in tags.keys():
                output = output.replace(tag, tags[tag])
    weechat.bar_item_update(SCRIPT_NAME)
    return

def substitute_colors(text):
    if int(version) >= 0x00040200:
        return weechat.string_eval_expression(text,{},{},{})
    # substitute colors in output
    return re.sub(regex_color, lambda match: weechat.color(match.group(1)), text)

def get_logfile(ptr_buffer):
    log_filename = ""
    log_enabled = 0
    infolist = weechat.infolist_get('logger_buffer','','')
    while weechat.infolist_next(infolist):
        bpointer = weechat.infolist_pointer(infolist, 'buffer')
        if ptr_buffer == bpointer:
            log_filename = weechat.infolist_string(infolist, 'log_filename')
            log_enabled = weechat.infolist_integer(infolist, 'log_enabled')
            log_level = weechat.infolist_integer(infolist, 'log_level')
    weechat.infolist_free(infolist)                  # free infolist()

    return (log_filename,log_enabled)

def item_update(data, remaining_calls):
    global hooks
    weechat.bar_item_update(SCRIPT_NAME)
    return weechat.WEECHAT_RC_OK

# ================================[ hook process]===============================
def my_hook_process_cb(data, command, return_code, out, err):
    global hook_process_out
    if return_code == weechat.WEECHAT_HOOK_PROCESS_ERROR:
        weechat.prnt("", "Error with command '%s'" % command)
        return weechat.WEECHAT_RC_OK
#    if return_code >= 0:
#        weechat.prnt("", "return_code = %d" % return_code)
    if out != "":
        hook_process_out = out.split()
    if err != "":
        weechat.prnt("", "stderr: %s" % err)
    return weechat.WEECHAT_RC_OK

# ================================[ weechat hook ]===============================
def window_switch_cb(data, signal, signal_data):
    window = signal_data
    window = weechat.current_window()
    ptr_buffer = weechat.window_get_pointer(window,"buffer")
    get_file_information(ptr_buffer)
    return weechat.WEECHAT_RC_OK

def buffer_switch_cb(data, signal, signal_data):
    ptr_buffer = signal_data
    window = weechat.current_window()
    ptr_buffer = weechat.window_get_pointer(window,'buffer')
    if ptr_buffer == '':
        return ''
    get_file_information(ptr_buffer)
    return weechat.WEECHAT_RC_OK

def hook_timer_refresh_item_cb(data, remaining_calls):
    weechat.bar_item_update(SCRIPT_NAME)
    return weechat.WEECHAT_RC_OK

def unhook_timer():
    global hooks
    if hooks["timer"] != "":
        weechat.bar_item_remove(hooks["bar_item"])
        weechat.unhook(hooks["timer"])
        hooks["timer"] = ""
        hooks["bar_item"]

def hook_timer():
    global hooks
    hooks["timer"] = weechat.hook_timer(int(OPTIONS["refresh"]) * 1000, 0, 0, 'item_update', '')
    hooks["bar_item"] = weechat.bar_item_new(SCRIPT_NAME, 'show_item','')

    if hooks["timer"] == 0:
        weechat.prnt('',"%s: can't enable %s, hook failed" % (weechat.prefix("error"), SCRIPT_NAME))
        weechat.bar_item_remove(hooks["bar_item"])
        hooks["bar_item"] = ""
        return 0
    weechat.bar_item_update(SCRIPT_NAME)
    return 1

# ================================[ weechat options and description ]===============================
def toggle_refresh(pointer, name, value):
    global hooks
    option = name[len('plugins.var.python.' + SCRIPT_NAME + '.'):]        # get optionname
    OPTIONS[option] = value                                               # save new value

    if option == 'refresh':                                               # option "refresh" changed by user?
        if hooks["timer"] != "":                                          # timer currently running?
            if OPTIONS['refresh'] != "0":                                 # new user setting not zero?
                unhook_timer()
                hook_timer()
            else:
                unhook_timer()                                            # user switched timer off
        elif hooks["timer"] == "":                                        # hook is empty
            if OPTIONS['refresh'] != "0":                                 # option is not zero!
                hook_timer()                                              # install hook
    weechat.bar_item_update(SCRIPT_NAME)
    return weechat.WEECHAT_RC_OK

def init_options():
    global OPTIONS

    for option, value in list(OPTIONS.items()):
        weechat.config_set_desc_plugin(option, '%s (default: "%s")' % (value[1], value[0]))
        if not weechat.config_is_set_plugin(option):
            weechat.config_set_plugin(option, value[0])
            OPTIONS[option] = value[0]
        else:
            OPTIONS[option] = weechat.config_get_plugin(option)
# ================================[ main ]===============================
if __name__ == "__main__":
  if weechat.register(SCRIPT_NAME, SCRIPT_AUTHOR, SCRIPT_VERSION, SCRIPT_LICENSE, SCRIPT_DESC, '', ''):
      version = weechat.info_get("version_number", "") or 0

      init_options()

      if OPTIONS["refresh"] != "0":
          hook_timer()
      else:
          weechat.hook_signal("buffer_switch","buffer_switch_cb","")
          weechat.hook_signal("window_switch","window_switch_cb","")
          weechat.bar_item_new(SCRIPT_NAME, 'show_item','')
          weechat.bar_item_update(SCRIPT_NAME)
      weechat.hook_config( 'plugins.var.python.' + SCRIPT_NAME + '.*', 'toggle_refresh', '' )