48 lines
1.1 KiB
Go
48 lines
1.1 KiB
Go
/* Simple 'echo' implementation. */
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package main
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import (
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"flag"
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"fmt"
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"strings"
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)
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func main() {
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newLineFlagPtr := flag.Bool("n", false,
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"Don't add new line character('-N' is lower priority).")
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newLineStrPtr := flag.String("N", "\n", "Use this instead new line character.")
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joinStrsFlagPtr := flag.Bool("j", false, "Join strings('-J' is lower priority).")
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joinStrPtr := flag.String("J", " ", "Use instead of space as separator.")
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backslashSeqFlagPtr := flag.Bool("e", false, "Interpret backslash special terminal characters.")
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flag.Parse()
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if *newLineFlagPtr {
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*newLineStrPtr = ""
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}
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if *joinStrsFlagPtr {
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*joinStrPtr = ""
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}
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printStr := strings.Join(flag.Args(), *joinStrPtr)
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if *backslashSeqFlagPtr {
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seqs := map[string] string {
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"\\\\" : "\\",
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"\\a" : "\a",
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"\\b" : "\b",
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/*"\\c" : "\c",
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"\\e" : "\e",*/
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"\\f" : "\f",
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"\\n" : "\n",
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"\\r" : "\r",
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"\\t" : "\t",
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"\\v" : "\v",
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}
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for k, v := range seqs {
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printStr = strings.ReplaceAll(printStr, k, v)
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}
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}
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fmt.Printf("%s%s",
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printStr,
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*newLineStrPtr,)
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}
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