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-- Copyright 2013 xt <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/>.

--

--[[

This script will try to prevent you from posting URLs to a buffer that was recently posted, as recently as your weechat will remember lines.

Usage:

To get notice when trying to send old URL you will have to add a new item to

your input bar. To override the default setting please run this command:

/set weechat.bar.input.items "[input_prompt]+(away),[input_search],[input_paste],[input_olds],input_text"

If you already have customized this setting, you will have to edit your own setting and add input_olds where you want it to be displayed.

Changelog:

version 2.1, 2015-08-06, boyska

* FIX urls interpreted as patterns

version 2, 2013-09-21, xt

* Use hdata instead of infolines to improve performance

version 1, 2013-09-15, xt

* initial version

--]]

SCRIPT_NAME = "oldswarner"

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

SCRIPT_VERSION = "2.1"

SCRIPT_LICENSE = "GPL3"

SCRIPT_DESC = "Warn user if about to paste URL already existing in buffer"

ITEM_NAME = 'input_olds'

ITEM_TEXT = ''

local w = weechat

local patterns = {

-- X://Y url

"^(https?://%S+)",

"^<URL:(https?://%S+)>",

"^<URL: (https?://%S+)>",

"^<(https?://%S+)>",

"^(https?://%S+)>",

"%f[%S](https?://%S+)",

-- www.X.Y url

"^(www%.[%w_-%%]+%.%S+)",

"%f[%S](www%.[%w_-%%]+%.%S+)",

}

-- return a table containing all urls in a message

function findURLs(message)

local urls = {}

local index = 1

for split in message:gmatch('%S+') do

for i=1, #patterns do

local _, count = split:gsub(patterns[i], function(url)

table.insert(urls, url)

end)

if(count > 0) then

index = index + 1

break

end

end

end

return urls

end

function is_url_in_buffer(buffer, url)

lines = weechat.hdata_pointer(weechat.hdata_get('buffer'), buffer, 'own_lines')

line = weechat.hdata_pointer(weechat.hdata_get('lines'), lines, 'first_line')

hdata_line = weechat.hdata_get('line')

hdata_line_data = weechat.hdata_get('line_data')

while #line > 0 do

data = weechat.hdata_pointer(hdata_line, line, 'data')

message = weechat.hdata_string(hdata_line_data, data, 'message')

if message:find(url, 1, true) ~= nil then

return true

end

line = weechat.hdata_move(hdata_line, line, 1)

end

return false

end

function oldschecker(data, buffer, command)

saved_input = weechat.buffer_get_string(buffer, "input")

for _,url in pairs(findURLs(saved_input)) do

if is_url_in_buffer(buffer, url) and not is_being_warned() then

set_item_text()

return weechat.WEECHAT_RC_OK_EAT

end

end

clear_item_text()

return w.WEECHAT_RC_OK

end

function set_item_text()

message = 'URL already in buffer. Press enter again if you are sure'

color = w.color(w.config_color(w.config_get('weechat.color.input_actions')))

ITEM_TEXT = string.format('%s%s%s', color, message, w.color('reset'))

w.bar_item_update(ITEM_NAME)

end

function clear_item_text()

ITEM_TEXT = ''

w.bar_item_update(ITEM_NAME)

end

function input_olds_cb(data, item, window)

return ITEM_TEXT

end

function is_being_warned()

if ITEM_TEXT == '' then

return false

end

return true

end

function p_init()

if w.register(

SCRIPT_NAME,

SCRIPT_AUTHOR,

SCRIPT_VERSION,

SCRIPT_LICENSE,

SCRIPT_DESC,

'',

'') then

w.hook_command_run('/input return', 'oldschecker', '')

-- create the bar item

w.bar_item_new(ITEM_NAME, 'input_olds_cb', '')

end

end

p_init()