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package shell
import (
"bytes"
"strings"
)
const specialChars = "`~!#$&*()|\\;'\"<>? "
func isSpecialChar(c byte) bool {
return strings.IndexByte(specialChars, c) >= 0
}
// Encode returns a sh string literal representing s
func Encode(s string) string {
var buf bytes.Buffer
for i := 0; i < len(s); i++ {
c := s[i]
if isSpecialChar(c) {
buf.WriteByte('\\')
buf.WriteByte(c)
} else if c == '\t' {
buf.WriteString(`'\t'`)
} else if c == '\r' {
buf.WriteString(`'\r'`)
} else if c == '\n' {
buf.WriteString(`'\n'`)
} else {
buf.WriteByte(c)
}
}
return buf.String()
}
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