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https://github.com/gopl-zh/gopl-zh.github.com.git
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43 lines
851 B
Go
43 lines
851 B
Go
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// Copyright © 2016 Alan A. A. Donovan & Brian W. Kernighan.
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// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
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// +build ignore
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// The thumbnail command produces thumbnails of JPEG files
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// whose names are provided on each line of the standard input.
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//
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// The "+build ignore" tag (see p.295) excludes this file from the
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// thumbnail package, but it can be compiled as a command and run like
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// this:
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//
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// Run with:
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// $ go run $GOPATH/src/gopl.io/ch8/thumbnail/main.go
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// foo.jpeg
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// ^D
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//
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package main
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import (
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"bufio"
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"fmt"
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"log"
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"os"
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"gopl.io/ch8/thumbnail"
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)
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func main() {
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input := bufio.NewScanner(os.Stdin)
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for input.Scan() {
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thumb, err := thumbnail.ImageFile(input.Text())
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if err != nil {
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log.Print(err)
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continue
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}
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fmt.Println(thumb)
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}
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if err := input.Err(); err != nil {
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log.Fatal(err)
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}
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}
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