57 lines
864 B
Go
57 lines
864 B
Go
package mergelbl
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import(
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"os"
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"fmt"
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"bufio"
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"flag"
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"log"
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)
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func
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Run(args []string) int {
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var(
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e error
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buf string
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)
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rsep := '\n'
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wsep := "\n"
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//del := ""
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status := 0
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arg0 := args[0]
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args = args[1:]
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flagSet := flag.NewFlagSet(arg0, flag.ExitOnError)
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flagSet.Usage = func() {
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fmt.Fprintf(os.Stderr, "usage: %s <file1> <file2> .. [fileN]\n", arg0)
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flagSet.PrintDefaults()
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}
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flagSet.Parse(args)
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args = flagSet.Args()
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files := make([]*os.File, len(args))
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for i, v := range args {
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files[i], e = os.Open(v)
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if e!=nil {
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log.Fatal(e)
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}
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}
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rds := make([]*bufio.Reader, len(files))
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for i, v := range files {
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rds[i] = bufio.NewReader(v)
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}
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for{
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s := ""
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for _, r := range rds{
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buf, e = r.ReadString(byte(rsep))
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if e!=nil {
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return 0
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}
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s += buf[:len(buf)-1]
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}
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fmt.Printf("%s%s", s, wsep)
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}
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return status
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}
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