47 lines
679 B
Go
47 lines
679 B
Go
package clean
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import "strings"
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var durationRunes = map[rune]bool{
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':': true,
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'-': true,
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'd': true,
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'h': true,
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'm': true,
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's': true,
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'n': true,
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'µ': true,
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}
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// Duration removes non-duration characters from a string and returns the result.
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func Duration(s string) string {
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if s == "" {
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return ""
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}
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valid := false
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skipDot := false
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// Remove invalid characters.
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s = strings.Map(func(r rune) rune {
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if !skipDot && (r == ',' || r == '.') {
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skipDot = true
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return '.'
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} else if durationRunes[r] {
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skipDot = false
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return r
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} else if r < '0' || r > '9' {
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return -1
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}
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valid = true
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return r
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}, s)
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if !valid {
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return ""
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}
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return s
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}
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