714 lines
18 KiB
Go
714 lines
18 KiB
Go
package inflect
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import (
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"fmt"
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"regexp"
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"strconv"
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"strings"
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"unicode"
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"unicode/utf8"
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)
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// used by rulesets
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type Rule struct {
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suffix string
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replacement string
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exact bool
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}
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// a Ruleset is the config of pluralization rules
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// you can extend the rules with the Add* methods
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type Ruleset struct {
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uncountables map[string]bool
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plurals []*Rule
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singulars []*Rule
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humans []*Rule
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acronyms []*Rule
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acronymMatcher *regexp.Regexp
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}
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// create a blank ruleset. Unless you are going to
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// build your own rules from scratch you probably
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// won't need this and can just use the defaultRuleset
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// via the global inflect.* methods
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func NewRuleset() *Ruleset {
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rs := new(Ruleset)
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rs.uncountables = make(map[string]bool)
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rs.plurals = make([]*Rule, 0)
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rs.singulars = make([]*Rule, 0)
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rs.humans = make([]*Rule, 0)
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rs.acronyms = make([]*Rule, 0)
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return rs
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}
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// create a new ruleset and load it with the default
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// set of common English pluralization rules
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func NewDefaultRuleset() *Ruleset {
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rs := NewRuleset()
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rs.AddPlural("s", "s")
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rs.AddPlural("testis", "testes")
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rs.AddPlural("axis", "axes")
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rs.AddPlural("octopus", "octopi")
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rs.AddPlural("virus", "viri")
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rs.AddPlural("octopi", "octopi")
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rs.AddPlural("viri", "viri")
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rs.AddPlural("alias", "aliases")
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rs.AddPlural("status", "statuses")
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rs.AddPlural("bus", "buses")
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rs.AddPlural("buffalo", "buffaloes")
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rs.AddPlural("tomato", "tomatoes")
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rs.AddPlural("tum", "ta")
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rs.AddPlural("ium", "ia")
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rs.AddPlural("ta", "ta")
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rs.AddPlural("ia", "ia")
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rs.AddPlural("sis", "ses")
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rs.AddPlural("lf", "lves")
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rs.AddPlural("rf", "rves")
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rs.AddPlural("afe", "aves")
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rs.AddPlural("bfe", "bves")
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rs.AddPlural("cfe", "cves")
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rs.AddPlural("dfe", "dves")
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rs.AddPlural("efe", "eves")
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rs.AddPlural("gfe", "gves")
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rs.AddPlural("hfe", "hves")
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rs.AddPlural("ife", "ives")
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rs.AddPlural("jfe", "jves")
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rs.AddPlural("kfe", "kves")
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rs.AddPlural("lfe", "lves")
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rs.AddPlural("mfe", "mves")
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rs.AddPlural("nfe", "nves")
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rs.AddPlural("ofe", "oves")
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rs.AddPlural("pfe", "pves")
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rs.AddPlural("qfe", "qves")
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rs.AddPlural("rfe", "rves")
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rs.AddPlural("sfe", "sves")
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rs.AddPlural("tfe", "tves")
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rs.AddPlural("ufe", "uves")
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rs.AddPlural("vfe", "vves")
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rs.AddPlural("wfe", "wves")
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rs.AddPlural("xfe", "xves")
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rs.AddPlural("yfe", "yves")
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rs.AddPlural("zfe", "zves")
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rs.AddPlural("hive", "hives")
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rs.AddPlural("quy", "quies")
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rs.AddPlural("by", "bies")
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rs.AddPlural("cy", "cies")
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rs.AddPlural("dy", "dies")
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rs.AddPlural("fy", "fies")
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rs.AddPlural("gy", "gies")
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rs.AddPlural("hy", "hies")
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rs.AddPlural("jy", "jies")
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rs.AddPlural("ky", "kies")
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rs.AddPlural("ly", "lies")
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rs.AddPlural("my", "mies")
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rs.AddPlural("ny", "nies")
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rs.AddPlural("py", "pies")
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rs.AddPlural("qy", "qies")
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rs.AddPlural("ry", "ries")
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rs.AddPlural("sy", "sies")
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rs.AddPlural("ty", "ties")
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rs.AddPlural("vy", "vies")
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rs.AddPlural("wy", "wies")
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rs.AddPlural("xy", "xies")
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rs.AddPlural("zy", "zies")
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rs.AddPlural("x", "xes")
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rs.AddPlural("ch", "ches")
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rs.AddPlural("ss", "sses")
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rs.AddPlural("sh", "shes")
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rs.AddPlural("matrix", "matrices")
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rs.AddPlural("vertix", "vertices")
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rs.AddPlural("indix", "indices")
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rs.AddPlural("matrex", "matrices")
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rs.AddPlural("vertex", "vertices")
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rs.AddPlural("index", "indices")
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rs.AddPlural("mouse", "mice")
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rs.AddPlural("louse", "lice")
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rs.AddPlural("mice", "mice")
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rs.AddPlural("lice", "lice")
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rs.AddPluralExact("ox", "oxen", true)
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rs.AddPluralExact("oxen", "oxen", true)
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rs.AddPluralExact("quiz", "quizzes", true)
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rs.AddSingular("s", "")
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rs.AddSingular("news", "news")
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rs.AddSingular("ta", "tum")
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rs.AddSingular("ia", "ium")
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rs.AddSingular("analyses", "analysis")
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rs.AddSingular("bases", "basis")
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rs.AddSingular("diagnoses", "diagnosis")
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rs.AddSingular("parentheses", "parenthesis")
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rs.AddSingular("prognoses", "prognosis")
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rs.AddSingular("synopses", "synopsis")
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rs.AddSingular("theses", "thesis")
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rs.AddSingular("analyses", "analysis")
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rs.AddSingular("aves", "afe")
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rs.AddSingular("bves", "bfe")
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rs.AddSingular("cves", "cfe")
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rs.AddSingular("dves", "dfe")
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rs.AddSingular("eves", "efe")
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rs.AddSingular("gves", "gfe")
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rs.AddSingular("hves", "hfe")
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rs.AddSingular("ives", "ife")
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rs.AddSingular("jves", "jfe")
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rs.AddSingular("kves", "kfe")
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rs.AddSingular("lves", "lfe")
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rs.AddSingular("mves", "mfe")
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rs.AddSingular("nves", "nfe")
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rs.AddSingular("oves", "ofe")
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rs.AddSingular("pves", "pfe")
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rs.AddSingular("qves", "qfe")
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rs.AddSingular("rves", "rfe")
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rs.AddSingular("sves", "sfe")
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rs.AddSingular("tves", "tfe")
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rs.AddSingular("uves", "ufe")
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rs.AddSingular("vves", "vfe")
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rs.AddSingular("wves", "wfe")
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rs.AddSingular("xves", "xfe")
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rs.AddSingular("yves", "yfe")
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rs.AddSingular("zves", "zfe")
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rs.AddSingular("hives", "hive")
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rs.AddSingular("tives", "tive")
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rs.AddSingular("lves", "lf")
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rs.AddSingular("rves", "rf")
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rs.AddSingular("quies", "quy")
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rs.AddSingular("bies", "by")
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rs.AddSingular("cies", "cy")
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rs.AddSingular("dies", "dy")
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rs.AddSingular("fies", "fy")
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rs.AddSingular("gies", "gy")
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rs.AddSingular("hies", "hy")
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rs.AddSingular("jies", "jy")
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rs.AddSingular("kies", "ky")
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rs.AddSingular("lies", "ly")
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rs.AddSingular("mies", "my")
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rs.AddSingular("nies", "ny")
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rs.AddSingular("pies", "py")
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rs.AddSingular("qies", "qy")
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rs.AddSingular("ries", "ry")
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rs.AddSingular("sies", "sy")
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rs.AddSingular("ties", "ty")
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rs.AddSingular("vies", "vy")
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rs.AddSingular("wies", "wy")
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rs.AddSingular("xies", "xy")
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rs.AddSingular("zies", "zy")
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rs.AddSingular("series", "series")
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rs.AddSingular("movies", "movie")
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rs.AddSingular("xes", "x")
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rs.AddSingular("ches", "ch")
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rs.AddSingular("sses", "ss")
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rs.AddSingular("shes", "sh")
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rs.AddSingular("mice", "mouse")
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rs.AddSingular("lice", "louse")
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rs.AddSingular("buses", "bus")
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rs.AddSingular("oes", "o")
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rs.AddSingular("shoes", "shoe")
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rs.AddSingular("crises", "crisis")
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rs.AddSingular("axes", "axis")
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rs.AddSingular("testes", "testis")
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rs.AddSingular("octopi", "octopus")
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rs.AddSingular("viri", "virus")
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rs.AddSingular("statuses", "status")
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rs.AddSingular("aliases", "alias")
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rs.AddSingularExact("oxen", "ox", true)
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rs.AddSingular("vertices", "vertex")
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rs.AddSingular("indices", "index")
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rs.AddSingular("matrices", "matrix")
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rs.AddSingularExact("quizzes", "quiz", true)
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rs.AddSingular("databases", "database")
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rs.AddIrregular("person", "people")
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rs.AddIrregular("man", "men")
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rs.AddIrregular("child", "children")
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rs.AddIrregular("sex", "sexes")
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rs.AddIrregular("move", "moves")
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rs.AddIrregular("zombie", "zombies")
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rs.AddUncountable("equipment")
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rs.AddUncountable("information")
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rs.AddUncountable("rice")
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rs.AddUncountable("money")
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rs.AddUncountable("species")
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rs.AddUncountable("series")
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rs.AddUncountable("fish")
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rs.AddUncountable("sheep")
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rs.AddUncountable("jeans")
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rs.AddUncountable("police")
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return rs
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}
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func (rs *Ruleset) Uncountables() map[string]bool {
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return rs.uncountables
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}
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// add a pluralization rule
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func (rs *Ruleset) AddPlural(suffix, replacement string) {
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rs.AddPluralExact(suffix, replacement, false)
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}
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// add a pluralization rule with full string match
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func (rs *Ruleset) AddPluralExact(suffix, replacement string, exact bool) {
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// remove uncountable
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delete(rs.uncountables, suffix)
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// create rule
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r := new(Rule)
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r.suffix = suffix
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r.replacement = replacement
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r.exact = exact
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// prepend
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rs.plurals = append([]*Rule{r}, rs.plurals...)
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}
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// add a singular rule
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func (rs *Ruleset) AddSingular(suffix, replacement string) {
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rs.AddSingularExact(suffix, replacement, false)
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}
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// same as AddSingular but you can set `exact` to force
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// a full string match
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func (rs *Ruleset) AddSingularExact(suffix, replacement string, exact bool) {
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// remove from uncountable
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delete(rs.uncountables, suffix)
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// create rule
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r := new(Rule)
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r.suffix = suffix
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r.replacement = replacement
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r.exact = exact
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rs.singulars = append([]*Rule{r}, rs.singulars...)
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}
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// Human rules are applied by humanize to show more friendly
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// versions of words
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func (rs *Ruleset) AddHuman(suffix, replacement string) {
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r := new(Rule)
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r.suffix = suffix
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r.replacement = replacement
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rs.humans = append([]*Rule{r}, rs.humans...)
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}
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// Add any inconsistant pluralizing/sinularizing rules
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// to the set here.
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func (rs *Ruleset) AddIrregular(singular, plural string) {
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delete(rs.uncountables, singular)
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delete(rs.uncountables, plural)
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rs.AddPlural(singular, plural)
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rs.AddPlural(plural, plural)
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rs.AddSingular(plural, singular)
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}
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// if you use acronym you may need to add them to the ruleset
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// to prevent Underscored words of things like "HTML" coming out
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// as "h_t_m_l"
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func (rs *Ruleset) AddAcronym(word string) {
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r := new(Rule)
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r.suffix = word
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r.replacement = rs.Titleize(strings.ToLower(word))
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rs.acronyms = append(rs.acronyms, r)
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}
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// add a word to this ruleset that has the same singular and plural form
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// for example: "rice"
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func (rs *Ruleset) AddUncountable(word string) {
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rs.uncountables[strings.ToLower(word)] = true
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}
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func (rs *Ruleset) isUncountable(word string) bool {
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// handle multiple words by using the last one
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words := strings.Split(word, " ")
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if _, exists := rs.uncountables[strings.ToLower(words[len(words)-1])]; exists {
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return true
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}
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return false
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}
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// returns the plural form of a singular word
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func (rs *Ruleset) Pluralize(word string) string {
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if len(word) == 0 {
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return word
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}
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if rs.isUncountable(word) {
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return word
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}
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for _, rule := range rs.plurals {
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if rule.exact {
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if word == rule.suffix {
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return rule.replacement
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}
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} else {
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if strings.HasSuffix(word, rule.suffix) {
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return replaceLast(word, rule.suffix, rule.replacement)
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}
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}
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}
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return word + "s"
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}
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// returns the singular form of a plural word
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func (rs *Ruleset) Singularize(word string) string {
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if len(word) == 0 {
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return word
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}
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if rs.isUncountable(word) {
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return word
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}
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for _, rule := range rs.singulars {
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if rule.exact {
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if word == rule.suffix {
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return rule.replacement
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}
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} else {
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if strings.HasSuffix(word, rule.suffix) {
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return replaceLast(word, rule.suffix, rule.replacement)
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}
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}
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}
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return word
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}
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// uppercase first character
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func (rs *Ruleset) Capitalize(word string) string {
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return strings.ToUpper(word[:1]) + word[1:]
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}
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// "dino_party" -> "DinoParty"
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func (rs *Ruleset) Camelize(word string) string {
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words := splitAtCaseChangeWithTitlecase(word)
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return strings.Join(words, "")
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}
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// same as Camelcase but with first letter downcased
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func (rs *Ruleset) CamelizeDownFirst(word string) string {
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word = Camelize(word)
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return strings.ToLower(word[:1]) + word[1:]
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}
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// Captitilize every word in sentance "hello there" -> "Hello There"
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func (rs *Ruleset) Titleize(word string) string {
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words := splitAtCaseChangeWithTitlecase(word)
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return strings.Join(words, " ")
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}
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func (rs *Ruleset) safeCaseAcronyms(word string) string {
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// convert an acroymn like HTML into Html
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for _, rule := range rs.acronyms {
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word = strings.Replace(word, rule.suffix, rule.replacement, -1)
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}
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return word
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}
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func (rs *Ruleset) seperatedWords(word, sep string) string {
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word = rs.safeCaseAcronyms(word)
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words := splitAtCaseChange(word)
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return strings.Join(words, sep)
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}
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// lowercase underscore version "BigBen" -> "big_ben"
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func (rs *Ruleset) Underscore(word string) string {
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return rs.seperatedWords(word, "_")
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}
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// First letter of sentance captitilized
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// Uses custom friendly replacements via AddHuman()
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func (rs *Ruleset) Humanize(word string) string {
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word = replaceLast(word, "_id", "") // strip foreign key kinds
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// replace and strings in humans list
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for _, rule := range rs.humans {
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word = strings.Replace(word, rule.suffix, rule.replacement, -1)
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}
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sentance := rs.seperatedWords(word, " ")
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return strings.ToUpper(sentance[:1]) + sentance[1:]
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}
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// an underscored foreign key name "Person" -> "person_id"
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func (rs *Ruleset) ForeignKey(word string) string {
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return rs.Underscore(rs.Singularize(word)) + "_id"
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}
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// a foreign key (with an underscore) "Person" -> "personid"
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func (rs *Ruleset) ForeignKeyCondensed(word string) string {
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return rs.Underscore(word) + "id"
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}
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// Rails style pluralized table names: "SuperPerson" -> "super_people"
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func (rs *Ruleset) Tableize(word string) string {
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return rs.Pluralize(rs.Underscore(rs.Typeify(word)))
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}
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var notUrlSafe *regexp.Regexp = regexp.MustCompile(`[^\w\d\-_ ]`)
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// param safe dasherized names like "my-param"
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func (rs *Ruleset) Parameterize(word string) string {
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return ParameterizeJoin(word, "-")
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}
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// param safe dasherized names with custom seperator
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func (rs *Ruleset) ParameterizeJoin(word, sep string) string {
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word = strings.ToLower(word)
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word = rs.Asciify(word)
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word = notUrlSafe.ReplaceAllString(word, "")
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word = strings.Replace(word, " ", sep, -1)
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if len(sep) > 0 {
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squash, err := regexp.Compile(sep + "+")
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if err == nil {
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word = squash.ReplaceAllString(word, sep)
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}
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}
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word = strings.Trim(word, sep+" ")
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return word
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}
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var lookalikes map[string]*regexp.Regexp = map[string]*regexp.Regexp{
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"A": regexp.MustCompile(`À|Á|Â|Ã|Ä|Å`),
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"AE": regexp.MustCompile(`Æ`),
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"C": regexp.MustCompile(`Ç`),
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"E": regexp.MustCompile(`È|É|Ê|Ë`),
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"G": regexp.MustCompile(`Ğ`),
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"I": regexp.MustCompile(`Ì|Í|Î|Ï|İ`),
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"N": regexp.MustCompile(`Ñ`),
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"O": regexp.MustCompile(`Ò|Ó|Ô|Õ|Ö|Ø`),
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"S": regexp.MustCompile(`Ş`),
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"U": regexp.MustCompile(`Ù|Ú|Û|Ü`),
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"Y": regexp.MustCompile(`Ý`),
|
||
"ss": regexp.MustCompile(`ß`),
|
||
"a": regexp.MustCompile(`à|á|â|ã|ä|å`),
|
||
"ae": regexp.MustCompile(`æ`),
|
||
"c": regexp.MustCompile(`ç`),
|
||
"e": regexp.MustCompile(`è|é|ê|ë`),
|
||
"g": regexp.MustCompile(`ğ`),
|
||
"i": regexp.MustCompile(`ì|í|î|ï|ı`),
|
||
"n": regexp.MustCompile(`ñ`),
|
||
"o": regexp.MustCompile(`ò|ó|ô|õ|ö|ø`),
|
||
"s": regexp.MustCompile(`ş`),
|
||
"u": regexp.MustCompile(`ù|ú|û|ü|ũ|ū|ŭ|ů|ű|ų`),
|
||
"y": regexp.MustCompile(`ý|ÿ`),
|
||
}
|
||
|
||
// transforms latin characters like é -> e
|
||
func (rs *Ruleset) Asciify(word string) string {
|
||
for repl, regex := range lookalikes {
|
||
word = regex.ReplaceAllString(word, repl)
|
||
}
|
||
return word
|
||
}
|
||
|
||
var tablePrefix *regexp.Regexp = regexp.MustCompile(`^[^.]*\.`)
|
||
|
||
// "something_like_this" -> "SomethingLikeThis"
|
||
func (rs *Ruleset) Typeify(word string) string {
|
||
word = tablePrefix.ReplaceAllString(word, "")
|
||
return rs.Camelize(rs.Singularize(word))
|
||
}
|
||
|
||
// "SomeText" -> "some-text"
|
||
func (rs *Ruleset) Dasherize(word string) string {
|
||
return rs.seperatedWords(word, "-")
|
||
}
|
||
|
||
// "1031" -> "1031st"
|
||
func (rs *Ruleset) Ordinalize(str string) string {
|
||
number, err := strconv.Atoi(str)
|
||
if err != nil {
|
||
return str
|
||
}
|
||
switch abs(number) % 100 {
|
||
case 11, 12, 13:
|
||
return fmt.Sprintf("%dth", number)
|
||
default:
|
||
switch abs(number) % 10 {
|
||
case 1:
|
||
return fmt.Sprintf("%dst", number)
|
||
case 2:
|
||
return fmt.Sprintf("%dnd", number)
|
||
case 3:
|
||
return fmt.Sprintf("%drd", number)
|
||
}
|
||
}
|
||
return fmt.Sprintf("%dth", number)
|
||
}
|
||
|
||
/////////////////////////////////////////
|
||
// the default global ruleset
|
||
//////////////////////////////////////////
|
||
|
||
var defaultRuleset *Ruleset
|
||
|
||
func init() {
|
||
defaultRuleset = NewDefaultRuleset()
|
||
}
|
||
|
||
func Uncountables() map[string]bool {
|
||
return defaultRuleset.Uncountables()
|
||
}
|
||
|
||
func AddPlural(suffix, replacement string) {
|
||
defaultRuleset.AddPlural(suffix, replacement)
|
||
}
|
||
|
||
func AddSingular(suffix, replacement string) {
|
||
defaultRuleset.AddSingular(suffix, replacement)
|
||
}
|
||
|
||
func AddHuman(suffix, replacement string) {
|
||
defaultRuleset.AddHuman(suffix, replacement)
|
||
}
|
||
|
||
func AddIrregular(singular, plural string) {
|
||
defaultRuleset.AddIrregular(singular, plural)
|
||
}
|
||
|
||
func AddAcronym(word string) {
|
||
defaultRuleset.AddAcronym(word)
|
||
}
|
||
|
||
func AddUncountable(word string) {
|
||
defaultRuleset.AddUncountable(word)
|
||
}
|
||
|
||
func Pluralize(word string) string {
|
||
return defaultRuleset.Pluralize(word)
|
||
}
|
||
|
||
func Singularize(word string) string {
|
||
return defaultRuleset.Singularize(word)
|
||
}
|
||
|
||
func Capitalize(word string) string {
|
||
return defaultRuleset.Capitalize(word)
|
||
}
|
||
|
||
func Camelize(word string) string {
|
||
return defaultRuleset.Camelize(word)
|
||
}
|
||
|
||
func CamelizeDownFirst(word string) string {
|
||
return defaultRuleset.CamelizeDownFirst(word)
|
||
}
|
||
|
||
func Titleize(word string) string {
|
||
return defaultRuleset.Titleize(word)
|
||
}
|
||
|
||
func Underscore(word string) string {
|
||
return defaultRuleset.Underscore(word)
|
||
}
|
||
|
||
func Humanize(word string) string {
|
||
return defaultRuleset.Humanize(word)
|
||
}
|
||
|
||
func ForeignKey(word string) string {
|
||
return defaultRuleset.ForeignKey(word)
|
||
}
|
||
|
||
func ForeignKeyCondensed(word string) string {
|
||
return defaultRuleset.ForeignKeyCondensed(word)
|
||
}
|
||
|
||
func Tableize(word string) string {
|
||
return defaultRuleset.Tableize(word)
|
||
}
|
||
|
||
func Parameterize(word string) string {
|
||
return defaultRuleset.Parameterize(word)
|
||
}
|
||
|
||
func ParameterizeJoin(word, sep string) string {
|
||
return defaultRuleset.ParameterizeJoin(word, sep)
|
||
}
|
||
|
||
func Typeify(word string) string {
|
||
return defaultRuleset.Typeify(word)
|
||
}
|
||
|
||
func Dasherize(word string) string {
|
||
return defaultRuleset.Dasherize(word)
|
||
}
|
||
|
||
func Ordinalize(word string) string {
|
||
return defaultRuleset.Ordinalize(word)
|
||
}
|
||
|
||
func Asciify(word string) string {
|
||
return defaultRuleset.Asciify(word)
|
||
}
|
||
|
||
// helper funcs
|
||
|
||
func reverse(s string) string {
|
||
o := make([]rune, utf8.RuneCountInString(s))
|
||
i := len(o)
|
||
for _, c := range s {
|
||
i--
|
||
o[i] = c
|
||
}
|
||
return string(o)
|
||
}
|
||
|
||
func isSpacerChar(c rune) bool {
|
||
switch {
|
||
case c == rune("_"[0]):
|
||
return true
|
||
case c == rune(" "[0]):
|
||
return true
|
||
case c == rune(":"[0]):
|
||
return true
|
||
case c == rune("-"[0]):
|
||
return true
|
||
}
|
||
return false
|
||
}
|
||
|
||
func splitAtCaseChange(s string) []string {
|
||
words := make([]string, 0)
|
||
word := make([]rune, 0)
|
||
for _, c := range s {
|
||
spacer := isSpacerChar(c)
|
||
if len(word) > 0 {
|
||
if unicode.IsUpper(c) || spacer {
|
||
words = append(words, string(word))
|
||
word = make([]rune, 0)
|
||
}
|
||
}
|
||
if !spacer {
|
||
word = append(word, unicode.ToLower(c))
|
||
}
|
||
}
|
||
words = append(words, string(word))
|
||
return words
|
||
}
|
||
|
||
func splitAtCaseChangeWithTitlecase(s string) []string {
|
||
words := make([]string, 0)
|
||
word := make([]rune, 0)
|
||
for _, c := range s {
|
||
spacer := isSpacerChar(c)
|
||
if len(word) > 0 {
|
||
if unicode.IsUpper(c) || spacer {
|
||
words = append(words, string(word))
|
||
word = make([]rune, 0)
|
||
}
|
||
}
|
||
if !spacer {
|
||
if len(word) > 0 {
|
||
word = append(word, unicode.ToLower(c))
|
||
} else {
|
||
word = append(word, unicode.ToUpper(c))
|
||
}
|
||
}
|
||
}
|
||
words = append(words, string(word))
|
||
return words
|
||
}
|
||
|
||
func replaceLast(s, match, repl string) string {
|
||
// reverse strings
|
||
srev := reverse(s)
|
||
mrev := reverse(match)
|
||
rrev := reverse(repl)
|
||
// match first and reverse back
|
||
return reverse(strings.Replace(srev, mrev, rrev, 1))
|
||
}
|
||
|
||
func abs(x int) int {
|
||
if x < 0 {
|
||
return -x
|
||
}
|
||
return x
|
||
}
|