mirror of
https://github.com/pocketbase/pocketbase.git
synced 2025-03-20 06:21:06 +02:00
90 lines
2.3 KiB
Go
90 lines
2.3 KiB
Go
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package inflector
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import (
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"log"
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"regexp"
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"github.com/pocketbase/pocketbase/tools/store"
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)
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var compiledPatterns = store.New[string, *regexp.Regexp](nil)
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// note: the patterns are extracted from popular Ruby/PHP/Node.js inflector packages
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var singularRules = []struct {
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pattern string // lazily compiled
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replacement string
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}{
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{"(?i)([nrlm]ese|deer|fish|sheep|measles|ois|pox|media|ss)$", "${1}"},
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{"(?i)^(sea[- ]bass)$", "${1}"},
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{"(?i)(s)tatuses$", "${1}tatus"},
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{"(?i)(f)eet$", "${1}oot"},
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{"(?i)(t)eeth$", "${1}ooth"},
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{"(?i)^(.*)(menu)s$", "${1}${2}"},
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{"(?i)(quiz)zes$", "${1}"},
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{"(?i)(matr)ices$", "${1}ix"},
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{"(?i)(vert|ind)ices$", "${1}ex"},
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{"(?i)^(ox)en", "${1}"},
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{"(?i)(alias)es$", "${1}"},
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{"(?i)(alumn|bacill|cact|foc|fung|nucle|radi|stimul|syllab|termin|viri?)i$", "${1}us"},
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{"(?i)([ftw]ax)es", "${1}"},
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{"(?i)(cris|ax|test)es$", "${1}is"},
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{"(?i)(shoe)s$", "${1}"},
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{"(?i)(o)es$", "${1}"},
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{"(?i)ouses$", "ouse"},
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{"(?i)([^a])uses$", "${1}us"},
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{"(?i)([m|l])ice$", "${1}ouse"},
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{"(?i)(x|ch|ss|sh)es$", "${1}"},
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{"(?i)(m)ovies$", "${1}ovie"},
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{"(?i)(s)eries$", "${1}eries"},
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{"(?i)([^aeiouy]|qu)ies$", "${1}y"},
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{"(?i)([lr])ves$", "${1}f"},
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{"(?i)(tive)s$", "${1}"},
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{"(?i)(hive)s$", "${1}"},
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{"(?i)(drive)s$", "${1}"},
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{"(?i)([^fo])ves$", "${1}fe"},
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{"(?i)(^analy)ses$", "${1}sis"},
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{"(?i)(analy|diagno|^ba|(p)arenthe|(p)rogno|(s)ynop|(t)he)ses$", "${1}${2}sis"},
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{"(?i)([ti])a$", "${1}um"},
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{"(?i)(p)eople$", "${1}erson"},
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{"(?i)(m)en$", "${1}an"},
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{"(?i)(c)hildren$", "${1}hild"},
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{"(?i)(n)ews$", "${1}ews"},
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{"(?i)(n)etherlands$", "${1}etherlands"},
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{"(?i)eaus$", "eau"},
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{"(?i)(currenc)ies$", "${1}y"},
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{"(?i)^(.*us)$", "${1}"},
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{"(?i)s$", ""},
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}
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// Singularize returns the singular version of the specified word.
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//
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// For example:
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//
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// inflector.Singularize("people") // "person"
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func Singularize(word string) string {
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if word == "" {
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return ""
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}
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for _, rule := range singularRules {
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re := compiledPatterns.GetOrSet(rule.pattern, func() *regexp.Regexp {
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re, err := regexp.Compile(rule.pattern)
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if err != nil {
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return nil
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}
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return re
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})
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if re == nil {
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// log only for debug purposes
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log.Println("[Singularize] failed to retrieve/compile rule pattern " + rule.pattern)
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continue
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}
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if re.MatchString(word) {
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return re.ReplaceAllString(word, rule.replacement)
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}
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}
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return word
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}
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