68 lines
1.2 KiB
Go
68 lines
1.2 KiB
Go
package txt
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import (
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"regexp"
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"strings"
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"github.com/photoprism/photoprism/pkg/fs"
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)
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var FileTitleRegexp = regexp.MustCompile("[\\p{L}\\-,':&+!?！]{1,}|( [&+] )?")
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// FileTitle returns the string with the first characters of each word converted to uppercase.
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func FileTitle(s string) string {
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s = fs.BasePrefix(s, true)
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if len(s) < 3 && IsASCII(s) {
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return ""
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}
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words := FileTitleRegexp.FindAllString(s, -1)
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var result []string
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found := 0
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for _, w := range words {
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w = strings.ToLower(w)
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// Ignore ASCII strings < 3 characters at the beginning.
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if IsASCII(w) && (len(w) < 3 && found == 0 || len(w) == 1) {
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continue
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}
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// Ignore short strings that are not a known word.
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if UnknownWord(w) {
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continue
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}
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result = append(result, w)
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found++
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if found > 10 {
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break
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}
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}
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if found == 0 {
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return ""
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}
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title := strings.Join(result, " ")
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title = strings.ReplaceAll(title, "--", " / ")
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title = strings.ReplaceAll(title, "-", " ")
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title = strings.ReplaceAll(title, " ", " ")
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// Remove small words from title ending.
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for w := range SmallWords {
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title = strings.TrimSuffix(title, " "+w)
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}
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if len(title) <= 4 && IsASCII(title) {
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return ""
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}
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return Title(title)
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}
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