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--!A cross-platform build utility based on Lua
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
--
-- Copyright (C) 2015-present, Xmake Open Source Community.
--
-- @author ruki
-- @file iconv.lua
--
-- imports
import("core.base.option")
-- supported encodings
local encodings = {"ansi", "ascii", "gb2312", "gbk", "iso8859", "ucs2", "ucs4", "utf16", "utf16be", "utf16bom", "utf16le", "utf16lebom", "utf32", "utf32be", "utf32le", "utf8", "utf8bom"}
-- the options
local options = {
{'f', "from", "kv", "utf8", "The source encoding.", values = encodings},
{'t', "to", "kv", "utf8", "The target encoding.", values = encodings},
{'l', "list", "k", nil, "List supported encodings."},
{'o', "outputfile", "kv", nil, "The output file."},
{nil, "inputfile", "v", nil, "The input file."}
}
-- main entry
function main(...)
-- parse arguments
local argv = table.pack(...)
local args = option.parse(argv, options, "Convert encoding of a file.",
"",
"Usage: xmake l cli.iconv [options] [inputfile]")
-- list encodings
if args.list then
print(table.concat(encodings, " "))
return
end
-- get arguments
local input_file = assert(args.inputfile, "input file required!")
local output_file = args.outputfile
local from_code = args.from
local to_code = args.to
-- convert encoding
if output_file then
io.convert(input_file, output_file, {from = from_code, to = to_code})
else
local tmpfile = os.tmpfile()
io.convert(input_file, tmpfile, {from = from_code, to = to_code})
local data = io.readfile(tmpfile, {encoding = "binary"})
if data then
io.write(data)
end
os.rm(tmpfile)
end
end
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