42 lines
941 B
Plaintext
42 lines
941 B
Plaintext
fragment
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This is a program to print a fragment of a file. It takes a filename,
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a starting line (lines are numbered starting at 1) and an optional
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end line or offset. It has one flag, `-nl`, which causes line numbers
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not to be printed.
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For example, compare the output to `nl -ba fragment.go`:
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$ fragment fragment.go 23 +6
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23: func main() {
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24: flag.Parse()
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25:
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26: if flag.NArg() < 2 || flag.NArg() > 3 {
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27: usage()
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28: os.Exit(1)
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29: }
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$ fragment fragment.go 25 30
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25:
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26: if flag.NArg() < 2 || flag.NArg() > 3 {
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27: usage()
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28: os.Exit(1)
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29: }
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30:
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$ fragment fragment.go 80
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80
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80: if n > end {
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81: return true
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82: }
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83: return false
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84: }
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85:
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86: fmt.Println(start)
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87: fmtStr += "\n"
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88: for i := start; !endFunc(i); i++ {
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89: fmt.Printf(fmtStr, i, lines[i])
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90: }
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91: }
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