40 lines
869 B
Go
40 lines
869 B
Go
package fastestvpn
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import (
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"errors"
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"fmt"
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"regexp"
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"strings"
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)
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var errFilenameNoProtocolSuffix = errors.New("filename does not have a protocol suffix")
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var trailNumberExp = regexp.MustCompile(`[0-9]+$`)
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func parseFilename(fileName string) (
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country string, tcp, udp bool, err error,
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) {
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const (
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tcpSuffix = "-TCP.ovpn"
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udpSuffix = "-UDP.ovpn"
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)
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var suffix string
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switch {
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case strings.HasSuffix(fileName, tcpSuffix):
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suffix = tcpSuffix
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tcp = true
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case strings.HasSuffix(fileName, udpSuffix):
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suffix = udpSuffix
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udp = true
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default:
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return "", false, false, fmt.Errorf("%w: %s",
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errFilenameNoProtocolSuffix, fileName)
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}
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countryWithNumber := strings.TrimSuffix(fileName, suffix)
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number := trailNumberExp.FindString(countryWithNumber)
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country = countryWithNumber[:len(countryWithNumber)-len(number)]
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return country, tcp, udp, nil
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}
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