cbc339b60d
Not all the tests pass yet but this makes go-git usable on Plan 9. Please merge this after https://github.com/src-d/go-billy/pull/78. Fixes #756 Signed-off-by: Fazlul Shahriar <fshahriar@gmail.com>
48 lines
961 B
Go
48 lines
961 B
Go
package git
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import (
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"fmt"
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"strings"
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)
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// preReceiveHook returns the bytes of a pre-receive hook script
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// that prints m before exiting successfully
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func preReceiveHook(m string) []byte {
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return []byte(fmt.Sprintf("#!/bin/rc\necho -n %s\n", quote(m)))
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}
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const quoteChar = '\''
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func needsQuote(s string) bool {
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for i := 0; i < len(s); i++ {
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c := s[i]
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if c == quoteChar || c <= ' ' { // quote, blanks, or control characters
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return true
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}
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}
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return false
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}
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// Quote adds single quotes to s in the style of rc(1) if they are needed.
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// The behaviour should be identical to Plan 9's quote(3).
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func quote(s string) string {
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if s == "" {
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return "''"
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}
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if !needsQuote(s) {
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return s
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}
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var b strings.Builder
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b.Grow(10 + len(s)) // Enough room for few quotes
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b.WriteByte(quoteChar)
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for i := 0; i < len(s); i++ {
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c := s[i]
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if c == quoteChar {
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b.WriteByte(quoteChar)
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}
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b.WriteByte(c)
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}
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b.WriteByte(quoteChar)
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return b.String()
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}
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