vicious/tools/headergen

101 lines
3.3 KiB
Lua
Executable File

#!/usr/bin/env lua
-- copyright header generator
-- Copyright (C) 2019 Nguyễn Gia Phong <vn.mcsinyx@gmail.com>
--
-- 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