Add code

.hgignore

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+## Defaults
+syntax: glob
+## Special files
+*~
+[_]*
+
+## Compiled Go source
+[568vq].out
+*.[568vq]
+*.[ao]
+*.exe
+
+## Compiled Cgo source
+*.cgo*
+*.dll
+*.so
+
+## Data
+*.bin
+
+## Logs and databases
+*.db
+*.log
+*.sql
+*.sqlite
+
+## OS generated files
+Icon?
+
+# * * *

README.md

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+slug
+====
+
+Package `slug` generate slug from unicode string. URL-friendly slugify with
+multiple languages support.
+
+[Documentation online](http://godoc.org/bitbucket.org/gosimple/slug)
+
+## Example
+
+	package main
+	
+	import(
+		"bitbucket.org/gosimple/slug"
+	    "fmt"
+	)
+	
+	text := slug.Make("Hellö Wörld хелло ворлд")
+	fmt.Println(text) // Will print: hello-world-khello-vorld
+	
+	someText := slug.Make("影師")
+	fmt.Println(someText) // Will print: ying-shi
+	
+	enText := slug.MakeLang("This & that", "en")
+	fmt.Println(enText) // Will print: this-and-that
+	
+	deText := slug.MakeLang("Diese & Dass", "de")
+	fmt.Println(deText) // Will print: diese-und-dass
+
+### Requests or bugs? 
+<https://bitbucket.org/gosimple/slug/issues>
+
+## Installation
+
+	go get -u bitbucket.org/gosimple/slug
+
+## License
+
+The source files are distributed under the 
+[Mozilla Public License, version 2.0](http://mozilla.org/MPL/2.0/),
+unless otherwise noted.  
+Please read the [FAQ](http://www.mozilla.org/MPL/2.0/FAQ.html)
+if you have further questions regarding the license.

default_substitution.go

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+// Copyright 2013 by Dobrosław Żybort. All rights reserved.
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package slug
+
+var defaultSub = map[rune]string{
+	'"':  "",
+	'\'': "",
+	'’':  "",
+	'‒':  "-", // figure dash
+	'–':  "-", // en dash
+	'—':  "-", // em dash
+	'―':  "-", // horizontal bar
+}

doc.go

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+// Copyright 2013 by Dobrosław Żybort. All rights reserved.
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+/*
+Package slug generate slug from unicode string. URL-friendly slugify with
+multiple languages support.
+
+Example:
+
+	package main
+
+	import(
+		"bitbucket.org/gosimple/slug"
+	    "fmt"
+	)
+
+	text := slug.Make("Hellö Wörld хелло ворлд")
+	fmt.Println(text) // Will print hello-world-khello-vorld
+
+	someText := slug.Make("影師")
+	fmt.Println(someText) // Will print: ying-shi
+
+	enText := slug.MakeLang("This & that", "en")
+	fmt.Println(enText) // Will print 'this-and-that'
+
+	deText := slug.MakeLang("Diese & Dass", "de")
+	fmt.Println(deText) // Will print 'diese-und-dass'
+
+Requests or bugs?
+
+https://bitbucket.org/gosimple/slug/issues
+*/
+package slug

languages_substitution.go

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+// Copyright 2013 by Dobrosław Żybort. All rights reserved.
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package slug
+
+var deSub = map[rune]string{
+	'&': "und",
+	'@': "an",
+}
+
+var enSub = map[rune]string{
+	'&': "and",
+	'@': "at",
+}
+
+var plSub = map[rune]string{
+	'&': "i",
+	'@': "na",
+}

slug.go

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+// Copyright 2013 by Dobrosław Żybort. All rights reserved.
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package slug
+
+import (
+	"github.com/fiam/gounidecode/unidecode"
+	"regexp"
+	"strings"
+)
+
+//=============================================================================
+
+// Make returns slug generated from provided string. Will use "en" as language
+// substitution.
+func Make(s string) (slug string) {
+	return MakeLang(s, "en")
+}
+
+// MakeLang returns slug generated from provided string and will use provided
+// language for chars substitution.
+func MakeLang(s string, lang string) (slug string) {
+	slug = strings.TrimSpace(s)
+
+	// Select substitution language
+	switch lang {
+	case "de":
+		slug = substitute(slug, deSub)
+	case "en":
+		slug = substitute(slug, enSub)
+	case "pl":
+		slug = substitute(slug, plSub)
+	default: // fallback to "en" if lang not found
+		slug = substitute(slug, enSub)
+	}
+
+	slug = substitute(slug, defaultSub)
+
+	slug = unidecode.Unidecode(slug)
+
+	slug = strings.ToLower(slug)
+
+	slug = regexp.MustCompile("[^a-z0-9-_]").ReplaceAllString(slug, "-")
+	slug = regexp.MustCompile("-+").ReplaceAllString(slug, "-")
+	slug = strings.Trim(slug, "-")
+	return slug
+}
+
+// Substitute string chars with provided substitution map.
+func substitute(s string, sub map[rune]string) (buf string) {
+	for _, c := range s {
+		if d, ok := sub[c]; ok {
+			buf += d
+		} else {
+			buf += string(c)
+		}
+	}
+	return
+}

slug_test.go

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+// Copyright 2013 by Dobrosław Żybort. All rights reserved.
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package slug
+
+import (
+	"testing"
+)
+
+//=============================================================================
+
+var SlugMakeTests = []struct {
+	in  string
+	out string
+}{
+	{"DOBROSLAWZYBORT", "dobroslawzybort"},
+	{"Dobroslaw Zybort", "dobroslaw-zybort"},
+	{"  Dobroslaw     Zybort  ?", "dobroslaw-zybort"},
+	{"Dobrosław Żybort", "dobroslaw-zybort"},
+	{"Ala ma 6 kotów.", "ala-ma-6-kotow"},
+
+	{"áÁàÀãÃâÂäÄąĄą̊Ą̊", "aaaaaaaaaaaaaa"},
+	{"ćĆĉĈçÇ", "cccccc"},
+	{"éÉèÈẽẼêÊëËęĘ", "eeeeeeeeeeee"},
+	{"íÍìÌĩĨîÎïÏįĮ", "iiiiiiiiiiii"},
+	{"łŁ", "ll"},
+	{"ńŃ", "nn"},
+	{"óÓòÒõÕôÔöÖǫǪǭǬø", "ooooooooooooooo"},
+	{"śŚ", "ss"},
+	{"úÚùÙũŨûÛüÜųŲ", "uuuuuuuuuuuu"},
+	{"y̨Y̨", "yy"},
+	{"źŹżŹ", "zzzz"},
+	{"·/,:;`˜'\"", ""},
+	{"2000–2013", "2000-2013"},
+	{"style—not", "style-not"},
+	{"test_slug", "test_slug"},
+	{"Æ", "ae"},
+	{"Ich heiße", "ich-heisse"},
+
+	{"This & that", "this-and-that"},
+	{"fácil €", "facil-eu"},
+	{"smile ☺", "smile"},
+	{"Hellö Wörld хелло ворлд", "hello-world-khello-vorld"},
+	{"\"C'est déjà l’été.\"", "cest-deja-lete"},
+	{"jaja---lol-méméméoo--a", "jaja-lol-mememeoo-a"},
+	{"影師", "ying-shi"},
+}
+
+func TestSlugMake(t *testing.T) {
+	for index, st := range SlugMakeTests {
+		slug := Make(st.in)
+		if st.out != slug {
+			t.Errorf(
+				"%d. Make(%v) => out = %v, want %v",
+				index, st.in, slug, st.out)
+		}
+	}
+}
+
+var SlugMakeLangTests = []struct {
+	lang string
+	in   string
+	out  string
+}{
+	{"en", "This & that", "this-and-that"},
+	{"de", "This & that", "this-und-that"},
+}
+
+func TestSlugMakeLang(t *testing.T) {
+	for index, smlt := range SlugMakeLangTests {
+		slug := MakeLang(smlt.in, smlt.lang)
+		if smlt.out != slug {
+			t.Errorf(
+				"%d. MakeLang(%v, \"%v\") => out = %v, want %v",
+				index, smlt.in, smlt.lang, slug, smlt.out)
+		}
+	}
+}