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#!/usr/bin/env lua5.3
-- needs xsel, clipnotify
-- luarocks-5.3 install --local luaposix
-- luarocks-5.3 install --local argparse
-- cat .clip_history | dmenu -l 10 | xsel -ib
local function default_luarocks_modules()
local luarocks_handle = io.popen("luarocks-5.3 path --bin")
local path_b = false
local cpath_b = false
for line in luarocks_handle:lines() do
local path = string.match(line, "LUA_PATH%s*=%s*('.+')")
local cpath = string.match(line, "LUA_CPATH%s*=%s*('.+')")
if path ~= nil then
package.path = package.path .. ";" .. string.sub(path, 2, -2)
end
if cpath ~= nil then
package.cpath = package.cpath .. ";" .. string.sub(cpath, 2, -2)
end
end
if path_b then os.exit(1) end
if cpath_b then os.exit(1) end
end
default_luarocks_modules()
local string = require("string")
local signal = require("posix.signal")
local argparse = require("argparse")
signal.signal(signal.SIGINT, function(signum) os.exit(128 + signum) end)
local function sleep(n) os.execute("sleep " .. tonumber(n)) end
local function file_exists(path)
local f = io.popen(path, "r")
return f ~= nil and io.close(f)
end
local function trim(s) return s:gsub("^%s+", ""):gsub("%s+$", "") end
local clip_hist_size = 200
local clip_hist = "/home/devi/.clip_history"
local parser = argparse("", "")
parser:option("-s --hist_size", "history file size", 200)
parser:option("-f --hist_file", "history file location",
"/home/devi/.clip_history")
local function loop()
local clips_table = {}
local hist_current_count = 0
local hist_file = io.open(clip_hist, "r")
for line in hist_file:lines() do
if line ~= "\n" and line ~= "" and line ~= "\r\n" and line ~= " " then
clips_table[line] = true
hist_current_count = hist_current_count + 1
end
end
hist_file:close()
while true do
local wait_for_event = io.popen("clipnotify")
local handle = io.popen("xsel -ob")
local last_clip_entry = handle:read("*a")
if last_clip_entry[-1] == "\n" then
clips_table[string.sub(last_clip_entry, 0,
string.len(last_clip_entry))] = true
else
clips_table[last_clip_entry] = true;
end
hist_current_count = hist_current_count + 1
if hist_current_count >= clip_hist_size then
table.remove(clips_table, 1)
hist_current_count = hist_current_count - 1
end
hist_file = io.open(clip_hist, "w")
for k, _ in pairs(clips_table) do
if clips_table[k] then hist_file:write(trim(k) .. "\n") end
end
hist_file:close()
wait_for_event:close()
handle:close()
sleep(.2)
end
end
-- if file_exists(clip_hist) ~= true then
-- local dummy_handle = io.popen(clip_hist, "a")
-- if dummy_handle ~= nil then dummy_handle:close() end
-- end
loop()
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