39 lines
670 B
Go
39 lines
670 B
Go
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package locale
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import (
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"sort"
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"strconv"
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"strings"
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)
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// ParseHeader parses an Accept-Language header, and sorts the values.
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func ParseHeader(header string) []string {
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if header == "" {
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return nil
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}
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parts := strings.Split(header, ",")
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sort.Slice(parts, func(i, j int) bool {
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return getQuality(parts[i]) > getQuality(parts[j])
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})
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for idx, val := range parts {
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parts[idx] = strings.Replace(strings.SplitN(val, ";q=", 2)[0], "-", "_", 1)
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}
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return parts
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}
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func getQuality(s string) float32 {
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idx := strings.Index(s, ";q=")
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if idx == -1 {
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return 1
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}
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f, err := strconv.ParseFloat(s[idx+3:], 32)
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if err != nil {
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return 1
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}
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return float32(f)
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}
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