63 lines
844 B
Go
63 lines
844 B
Go
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package tmpl
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import (
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"os"
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"fmt"
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"bufio"
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"io"
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)
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var(
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arg0 string
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delim rune
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status int
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)
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func
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usage() {
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fmt.Fprintf(os.Stderr, "usage: %s [n_utf8_chars] [n_strings]\n", arg0)
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os.Exit(1)
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}
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func
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Run(args []string) int {
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status = 0
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delim = '\n'
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arg0 = args[0]
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if len(args[1]) != len(args)-2 {
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usage()
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}
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chrs := []rune(args[1])
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args = args[2:]
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tmpl := make(map[rune] string)
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for i, s := range args {
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tmpl[rune(chrs[i])] = s
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}
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r := bufio.NewReader(os.Stdin)
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for{
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s, e := r.ReadString(byte(delim))
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if e==io.EOF {
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break
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}
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s = s[:len(s)-1]
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for _, c := range []rune(s) {
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s, ok := tmpl[c]
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if !ok {
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fmt.Fprintf(os.Stderr, "%s: '%s': no such character in template string\n",
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arg0, string(c) )
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continue
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}
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fmt.Printf("%s", s)
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}
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fmt.Printf("%s", string(delim))
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}
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return status
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}
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