40 lines
780 B
Go
40 lines
780 B
Go
package fs
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import (
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"strings"
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"time"
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)
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// NonCanonical returns true if the file basename is NOT canonical.
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func NonCanonical(basename string) bool {
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if len(basename) != 24 {
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return true
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}
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if strings.Count(basename, "_") != 2 {
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return true
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}
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if strings.ContainsAny(basename, "-~!@#$%^&*()+=<>?,.") {
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return true
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}
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return false
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}
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// IsCanonical returns true if the file basename is canonical.
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func IsCanonical(basename string) bool {
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return !NonCanonical(basename)
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}
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// CanonicalName returns a canonical name based on time and CRC32 checksum.
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func CanonicalName(date time.Time, checksum string) string {
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if len(checksum) != 8 {
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checksum = "EEEEEEEE"
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} else {
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checksum = strings.ToUpper(checksum)
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}
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return date.Format("20060102_150405_") + checksum
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}
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