mirror of
https://github.com/unknwon/the-way-to-go_ZH_CN.git
synced 2025-08-12 05:33:04 +08:00
37 lines
569 B
Go
37 lines
569 B
Go
package main
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import (
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"os"
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"io"
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"fmt"
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"bufio"
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"flag"
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)
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func cat(r *bufio.Reader) {
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for {
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buf, err := r.ReadBytes('\n')
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if err == io.EOF {
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break
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}
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fmt.Fprintf(os.Stdout, "%s", buf)
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}
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return
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}
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func main() {
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flag.Parse()
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if flag.NArg() == 0 {
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cat(bufio.NewReader(os.Stdin))
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}
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for i := 0; i < flag.NArg(); i++ {
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f, err := os.Open(flag.Arg(i))
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if err != nil {
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fmt.Fprintf(os.Stderr, "%s:error reading from %s: %s\n", os.Args[0], flag.Arg(i), err.Error())
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continue
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}
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cat(bufio.NewReader(f))
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}
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}
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