Adding upstream version 0.7.0+dfsg.

Signed-off-by: Daniel Baumann <daniel@debian.org>

cmd/gclip/main.go

@@ -0,0 +1,131 @@
+// Copyright 2021 The golang.design Initiative Authors.
+// All rights reserved. Use of this source code is governed
+// by a MIT license that can be found in the LICENSE file.
+//
+// Written by Changkun Ou <changkun.de>
+
+package main // go install golang.design/x/clipboard/cmd/gclip@latest
+
+import (
+	"flag"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+
+	"golang.design/x/clipboard"
+)
+
+func usage() {
+	fmt.Fprintf(os.Stderr, `gclip is a command that provides clipboard interaction.
+
+usage: gclip [-copy|-paste] [-f <file>]
+
+options:
+`)
+	flag.PrintDefaults()
+	fmt.Fprintf(os.Stderr, `
+examples:
+gclip -paste                    paste from clipboard and prints the content
+gclip -paste -f x.txt           paste from clipboard and save as text to x.txt
+gclip -paste -f x.png           paste from clipboard and save as image to x.png
+
+cat x.txt | gclip -copy         copy content from x.txt to clipboard
+gclip -copy -f x.txt            copy content from x.txt to clipboard
+gclip -copy -f x.png            copy x.png as image data to clipboard
+`)
+	os.Exit(2)
+}
+
+var (
+	in   = flag.Bool("copy", false, "copy data to clipboard")
+	out  = flag.Bool("paste", false, "paste data from clipboard")
+	file = flag.String("f", "", "source or destination to a given file path")
+)
+
+func init() {
+	err := clipboard.Init()
+	if err != nil {
+		panic(err)
+	}
+}
+
+func main() {
+	flag.Usage = usage
+	flag.Parse()
+	if *out {
+		if err := pst(); err != nil {
+			usage()
+		}
+		return
+	}
+	if *in {
+		if err := cpy(); err != nil {
+			usage()
+		}
+		return
+	}
+	usage()
+}
+
+func cpy() error {
+	t := clipboard.FmtText
+	ext := filepath.Ext(*file)
+
+	switch ext {
+	case ".png":
+		t = clipboard.FmtImage
+	case ".txt":
+		fallthrough
+	default:
+		t = clipboard.FmtText
+	}
+
+	var (
+		b   []byte
+		err error
+	)
+	if *file != "" {
+		b, err = os.ReadFile(*file)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "failed to read given file: %v", err)
+			return err
+		}
+	} else {
+		b, err = io.ReadAll(os.Stdin)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "failed to read from stdin: %v", err)
+			return err
+		}
+	}
+
+	// Wait until clipboard content has been changed.
+	<-clipboard.Write(t, b)
+	return nil
+}
+
+func pst() (err error) {
+	var b []byte
+
+	b = clipboard.Read(clipboard.FmtText)
+	if b == nil {
+		b = clipboard.Read(clipboard.FmtImage)
+	}
+
+	if *file != "" && b != nil {
+		err = os.WriteFile(*file, b, os.ModePerm)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "failed to write data to file %s: %v", *file, err)
+		}
+		return err
+	}
+
+	for len(b) > 0 {
+		n, err := os.Stdout.Write(b)
+		if err != nil {
+			return err
+		}
+		b = b[n:]
+	}
+	return nil
+}