Update copyright notices in libraries with the help of an auto-generator

Changes.md

@@ -16,6 +16,7 @@ Added:
 - `helpers.setasyncall` to avoid writing redundant workers for asynchronous
   widget types. Note that these workers are only needed in case Vicious is used
   as a stand-alone library.
+- `headergen` script for automatic generation of copyright notices.
 
 Fixed:
 
@@ -30,6 +31,7 @@ Fixed:
 - [pkg] Use more updated front-ends for Debian/Ubuntu (apt) and Fedora (dnf)
 - [os] Splitted os_all into os_linux and os_bsd (and refactored to async)
 - Tweak `.luacheckrc` to suit functional style and soft-limit text width to 80
+- Update copyright headers for libraries
 
 Removed:
 

headergen

@@ -0,0 +1,100 @@
+#!/usr/bin/env lua
+-- copyright header generator
+-- Copyright (C) 2019  Nguyễn Gia Phong
+--
+-- This file is part of Vicious.
+--
+-- Vicious 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 2 of the
+-- License, or (at your option) any later version.
+--
+-- Vicious 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 Vicious.  If not, see <https://www.gnu.org/licenses/>.
+
+local ipairs = ipairs
+local pairs = pairs
+local tonumber = tonumber
+local io = { open = io.open, popen = io.popen }
+local os = { exit = os.exit }
+local table = {
+    concat = table.concat,
+    insert = table.insert,
+    sort = table.sort
+}
+
+local HEADER = [[-- %s
+%s
+--
+-- This file is part of Vicious.
+--
+-- Vicious 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 2 of the
+-- License, or (at your option) any later version.
+--
+-- Vicious 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 Vicious.  If not, see <https://www.gnu.org/licenses/>.
+
+%s]]
+local COMMAND = "git log --date=format:%Y --format='%ad %an <%ae>' "
+
+if #arg == 0 then
+    print'usage: headergen lua-source-files'
+    os.exit(1)
+end
+
+for _, filename in ipairs(arg) do
+    local fi = io.open(filename)
+    local content = fi:read'*a'
+    fi:close()
+
+    local holders = {}
+    local output = io.popen(COMMAND .. filename)
+    for line in output:lines() do
+        local year, author = line:match'(%d+)%s+(.+)'
+        if holders[author] == nil then holders[author] = {} end
+        holders[author][year] = true
+    end
+    output:close()
+
+    local copyrights = {}
+    for author, years in pairs(holders) do
+        local time = {}
+        for year, _ in pairs(years) do table.insert(time, tonumber(year)) end
+        table.sort(time)
+
+        local copyright = { 'Copyright (C) ' }
+        for _, current in ipairs(time) do
+            local prev = tonumber(copyright[#copyright])
+            if prev == nil then
+                table.insert(copyright, current)
+            elseif current - 1 ~= prev then
+                table.insert(copyright, ',')
+                table.insert(copyright, current)
+            elseif copyright[#copyright - 1] == '-' then
+                copyright[#copyright] = current
+            else
+                table.insert(copyright, '-')
+                table.insert(copyright, current)
+            end
+        end
+        table.insert(copyrights,
+            ('-- %s  %s'):format(table.concat(copyright), author))
+    end
+
+    local fo = io.open(filename, 'w')
+    table.sort(copyrights)
+    fo:write(HEADER:format(filename, table.concat(copyrights, '\n'), content))
+    fo:close()
+end

helpers.lua

@@ -1,11 +1,34 @@
----------------------------------------------------
--- Licensed under the GNU General Public License v2
---  * (c) 2010, Adrian C. <anrxc@sysphere.org>
---  * (c) 2009, Rémy C. <shikamaru@mandriva.org>
---  * (c) 2009, Benedikt Sauer <filmor@gmail.com>
---  * (c) 2009, Henning Glawe <glaweh@debian.org>
---  * (c) 2009, Lucas de Vries <lucas@glacicle.com>
----------------------------------------------------
+-- helper functions
+-- Copyright (C) 2009  Benedikt Sauer <filmor@gmail.com>
+-- Copyright (C) 2009  Henning Glawe <glaweh@debian.org>
+-- Copyright (C) 2009  Lucas de Vries <lucas@glacicle.com>
+-- Copyright (C) 2009  Rémy C. <shikamaru@mandriva.org>
+-- Copyright (C) 2009-2012  Adrian C. (anrxc) <anrxc@sysphere.org>
+-- Copyright (C) 2011  Joerg T. (Mic92) <jthalheim@gmail.com>
+-- Copyright (C) 2012  Arvydas Sidorenko <asido4@gmail.com>
+-- Copyright (C) 2012  Jörg Thalheim <jthalheim@gmail.com>
+-- Copyright (C) 2014-2015  Jörg Thalheim <joerg@higgsboson.tk>
+-- Copyright (C) 2017  Joerg Thalheim <joerg@thalheim.io>
+-- Copyright (C) 2017,2019  mutlusun <mutlusun@github.com>
+-- Copyright (C) 2017-2018  Jörg Thalheim <joerg@thalheim.io>
+-- Copyright (C) 2018-2019  Nguyễn Gia Phong <vn.mcsinyx@gmail.com>
+-- Copyright (C) 2019  Alexander Koch <lynix47@gmail.com>
+-- Copyright (C) 2019  Enric Morales <me@enric.me>
+--
+-- This file is part of Vicious.
+--
+-- Vicious 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 2 of the
+-- License, or (at your option) any later version.
+--
+-- Vicious 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 Vicious.  If not, see <https://www.gnu.org/licenses/>.
 
 -- {{{ Grab environment
 local pairs = pairs

init.lua

@@ -1,10 +1,35 @@
----------------------------------------------------
--- Vicious widgets for the awesome window manager
----------------------------------------------------
--- Licensed under the GNU General Public License v2
---  * (c) 2010, Adrian C. <anrxc@sysphere.org>
---  * (c) 2009, Lucas de Vries <lucas@glacicle.com>
----------------------------------------------------
+-- Vicious module initialization
+-- Copyright (C) 2009  Lucas de Vries <lucas@glacicle.com>
+-- Copyright (C) 2009-2013  Adrian C. (anrxc) <anrxc@sysphere.org>
+-- Copyright (C) 2011  Joerg T. (Mic92) <jthalheim@gmail.com>
+-- Copyright (C) 2012  Arvydas Sidorenko <asido4@gmail.com>
+-- Copyright (C) 2012  Jörg Thalheim <jthalheim@gmail.com>
+-- Copyright (C) 2013  Dodo <dodo.the.last@gmail.com>
+-- Copyright (C) 2013-2014,2017  Jörg Thalheim <joerg@higgsboson.tk>
+-- Copyright (C) 2014  blastmaster <blastmaster@tuxcode.org>
+-- Copyright (C) 2015  Daniel Hahler <git@thequod.de>
+-- Copyright (C) 2017  James Reed <supplantr@users.noreply.github.com>
+-- Copyright (C) 2017  Joerg Thalheim <joerg@thalheim.io>
+-- Copyright (C) 2017  getzze <getzze@gmail.com>
+-- Copyright (C) 2017  mutlusun <mutlusun@github.com>
+-- Copyright (C) 2018  Beniamin Kalinowski <beniamin.kalinowski@gmail.com>
+-- Copyright (C) 2018  Nguyễn Gia Phong <vn.mcsinyx@gmail.com>
+-- Copyright (C) 2019  Daniel Hahler <github@thequod.de>
+--
+-- This file is part of Vicious.
+--
+-- Vicious 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 2 of the
+-- License, or (at your option) any later version.
+--
+-- Vicious 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 Vicious.  If not, see <https://www.gnu.org/licenses/>.
 
 -- {{{ Setup environment
 local type  = type

spawn.lua

@@ -1,5 +1,5 @@
--- spawn.lua - wrapper around Awesome awful.spawn with fallback
--- Copyright (C) 2019  Nguyễn Gia Phong
+-- wrapper around Awesome awful.spawn with fallback
+-- Copyright (C) 2019  Nguyễn Gia Phong <vn.mcsinyx@gmail.com>
 --
 -- This file is part of Vicious.
 --
@@ -11,9 +11,9 @@
 -- Vicious 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 Affero General Public License for more details.
+-- GNU General Public License for more details.
 --
--- You should have received a copy of the GNU Affero General Public License
+-- You should have received a copy of the GNU General Public License
 -- along with Vicious.  If not, see <https://www.gnu.org/licenses/>.
 
 local status, awful = pcall(require, "awful")