blob: b1e41d92c84bea359141dbf1d47b59242a3d285a [file] [log] [blame]
// Copyright 2017 The Wuffs Authors.
//
// 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
//
// https://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.
// +build ignore
package main
// compress-giflzw.go applies GIF's LZW-compression. The initial byte in each
// written file is the LZW literal width.
//
// Usage: go run compress-giflzw.go < pi.txt > pi.txt.giflzw
import (
"compress/lzw"
"io"
"os"
)
func main() {
if err := main1(); err != nil {
os.Stderr.WriteString(err.Error() + "\n")
os.Exit(1)
}
}
func main1() error {
os.Stdout.WriteString("\x08")
w := lzw.NewWriter(os.Stdout, lzw.LSB, 8)
if _, err := io.Copy(w, os.Stdin); err != nil {
w.Close()
return err
}
return w.Close()
}