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-- HTTP bar item, using lua patterns to get content

--

-- Copyright 2013 Tor Hveem <xt@bash.no>

--

-- 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/>.

--

--

-- Usage: put [http_item] in your status bar items. (Or any other bar to your liking)

-- "/set weechat.bar.status.items".

--

local w = weechat

SCRIPT_NAME = "http_item"

SCRIPT_AUTHOR = "xt <xt@bash.no>"

SCRIPT_VERSION = "1"

SCRIPT_LICENSE = "GPL3"

SCRIPT_DESC = "Bar item with HTTP source, using lua patterns to match content"

BAR_ITEM_NAME = SCRIPT_NAME

-- Settings

settings = {

url = 'http://weechat.org/info/stable/',

pattern = '(%d+%.%d+%.%d+)',

message_prefix = 'Latest WeeChat: ',

message_postfix = '',

message_color = 'default',

interval = '5', -- poll every 5 minutes

}

-- other globals

ITEM_TEXT = nil

function http_bi_cb(data, item, window)

-- Return the bar item string

if ITEM_TEXT then

return string.format('%s%s%s%s',

w.config_get_plugin('message_prefix'),

w.color(w.config_get_plugin('message_color')),

ITEM_TEXT,

w.config_get_plugin('message_postfix')

)

end

return ''

end

function http_bi_update()

-- Function to manually update the bar item

w.bar_item_update(BAR_ITEM_NAME)

return w.WEECHAT_RC_OK

end

function debug(buf, str)

-- helper function for debugging

local debug = false

if debug and str then

w.print(buf, SCRIPT_NAME .. ': ' .. str)

end

return w.WEECHAT_RC_OK

end

function init_config()

-- Set defaults

for option, default_value in pairs(settings) do

if w.config_is_set_plugin(option) == 0 then

w.config_set_plugin(option, default_value)

end

end

-- read options from weechat into our lua table

for option, default_value in pairs(settings) do

settings[option] = w.config_get_plugin(option)

end

return w.WEECHAT_RC_OK

end

function start_fetch()

-- Get URL using weechat API for URL

local url = w.config_get_plugin('url')

-- 30 seconds timeout

local timeout = 30*1000

debug('', url)

w.hook_process('url:'..url, timeout, 'http_fetch_cb', '')

return w.WEECHAT_RC_OK

end

function http_fetch_cb(data, command, return_code, out, err)

if #out > 0 then

out = out:match(w.config_get_plugin('pattern'))

ITEM_TEXT = out

debug('', ITEM_TEXT)

-- Update bar item since we got new data

w.bar_item_update(BAR_ITEM_NAME)

end

return w.WEECHAT_RC_OK

end

if w.register(SCRIPT_NAME, SCRIPT_AUTHOR, SCRIPT_VERSION, SCRIPT_LICENSE, SCRIPT_DESC, '', '') then

init_config()

-- create the bar item

w.bar_item_new(BAR_ITEM_NAME, 'http_bi_cb', '')

-- Initial fetch

start_fetch()

-- hook the fetch timer

w.hook_timer( w.config_get_plugin('interval')*60*1000, 0, 0, 'start_fetch', '')

end