Ophestra
9ddf5794dd
Test cases are mostly taken from util-linux. This implementation is more correct and slightly faster than the one found in github:kubernetes/utils. Signed-off-by: Ophestra <cat@gensokyo.uk>
31 lines
498 B
Go
31 lines
498 B
Go
package vfs
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import "strings"
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func Unmangle(s string) string {
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if !strings.ContainsRune(s, '\\') {
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return s
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}
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v := make([]byte, len(s))
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var (
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j int
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c byte
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)
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for i := 0; i < len(s); i++ {
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c = s[i]
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if c == '\\' && len(s) > i+3 &&
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(s[i+1] == '0' || s[i+1] == '1') &&
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(s[i+2] >= '0' && s[i+2] <= '7') &&
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(s[i+3] >= '0' && s[i+3] <= '7') {
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c = ((s[i+1] - '0') << 6) |
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((s[i+2] - '0') << 3) |
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(s[i+3] - '0')
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i += 3
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}
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v[j] = c
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j++
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}
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return string(v[:j])
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}
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