96 lines
2 KiB
Go
96 lines
2 KiB
Go
package fs
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import (
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"regexp"
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"github.com/photoprism/photoprism/pkg/rnd"
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)
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var DscNameRegexp = regexp.MustCompile("\\D{3}[\\d_]\\d{4,8}_?\\d{0,6}_?\\d{0,6}[\\.jpgJPGXx]{0,4}")
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var UniqueNameRegexp = regexp.MustCompile("[a-f0-9]{8,16}_[a-f0-9]{6,16}_[A-Za-z0-9]{1,20}_?[A-Za-z0-9]{0,4}") // Example: 8263987746_d0a6055c58_o
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var UUIDNameRegexp = regexp.MustCompile("[A-Fa-f0-9\\-]{16,36}_?[A-Za-z0-9_]{0,20}") // Example: 8263987746_d0a6055c58_o
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// IsInt tests if the file base is an integer number.
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func IsInt(s string) bool {
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if s == "" {
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return false
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}
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for _, r := range s {
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if r < 48 || r > 57 {
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return false
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}
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}
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return true
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}
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// IsAsciiID tests if the string is a file name that only contains uppercase ascii letters and numbers like "IQVG4929".
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func IsAsciiID(s string) bool {
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if s == "" {
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return false
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}
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for _, r := range s {
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if (r < 65 || r > 90) && (r < 48 || r > 57) && r != 45 && r != 95 {
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return false
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}
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}
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return true
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}
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// IsUniqueName tests if the string looks like a unique file name.
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func IsUniqueName(s string) bool {
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if s == "" {
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return false
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}
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if m := UniqueNameRegexp.FindString(s); s == m {
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return true
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} else if m := UUIDNameRegexp.FindString(s); s == m {
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return true
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}
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return false
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}
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// IsDscName tests if the string looks like a file name generated by a camera.
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func IsDscName(s string) bool {
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if s == "" {
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return false
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}
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if m := DscNameRegexp.FindString(s); s == m {
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return true
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}
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return false
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}
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// IsGenerated tests if the file name looks like an automatically generated identifier.
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func IsGenerated(fileName string) bool {
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if fileName == "" {
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return false
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}
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base := BasePrefix(fileName, false)
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if IsAsciiID(base) {
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return true
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} else if IsHash(base) {
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return true
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} else if IsInt(base) {
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return true
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} else if IsDscName(base) {
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return true
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} else if IsUniqueName(base) {
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return true
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} else if rnd.IsUID(base, 0) {
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return true
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} else if IsCanonical(base) {
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return true
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}
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return false
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}
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