Support unicode emojis and remove emojify.js (#11032)
* Support unicode emojis and remove emojify.js This PR replaces all use of emojify.js and adds unicode emoji support to various areas of gitea. This works in a few ways: First it adds emoji parsing support into gitea itself. This allows us to * Render emojis from valid alias (😄) * Detect unicode emojis and let us put them in their own class with proper aria-labels and styling * Easily allow for custom "emoji" * Support all emoji rendering and features without javascript * Uses plain unicode and lets the system render in appropriate emoji font * Doesn't leave us relying on external sources for updates/fixes/features That same list of emoji is also used to create a json file which replaces the part of emojify.js that populates the emoji search tribute. This file is about 35KB with GZIP turned on and I've set it to load after the page renders to not hinder page load time (and this removes loading emojify.js also) For custom "emoji" it uses a pretty simple scheme of just looking for /emojis/img/name.png where name is something a user has put in the "allowed reactions" setting we already have. The gitea reaction that was previously hard coded into a forked copy of emojify.js is included and works as a custom reaction under this method. The emoji data sourced here is from https://github.com/github/gemoji which is the gem library Github uses for their emoji rendering (and a data source for other sites). So we should be able to easily render any emoji and :alias: that Github can, removing any errors from migrated content. They also update it as well, so we can sync when there are new unicode emoji lists released. I've included a slimmed down and slightly modified forked copy of https://github.com/knq/emoji to make up our own emoji module. The code is pretty straight forward and again allows us to have a lot of flexibility in what happens. I had seen a few comments about performance in some of the other threads if we render this ourselves, but there doesn't seem to be any issue here. In a test it can parse, convert, and render 1,000 emojis inside of a large markdown table in about 100ms on my laptop (which is many more emojis than will ever be in any normal issue). This also prevents any flickering and other weirdness from using javascript to render some things while using go for others. Not included here are image fall back URLS. I don't really think they are necessary for anything new being written in 2020. However, managing the emoji ourselves would allow us to add these as a feature later on if it seems necessary. Fixes: https://github.com/go-gitea/gitea/issues/9182 Fixes: https://github.com/go-gitea/gitea/issues/8974 Fixes: https://github.com/go-gitea/gitea/issues/8953 Fixes: https://github.com/go-gitea/gitea/issues/6628 Fixes: https://github.com/go-gitea/gitea/issues/5130 * add new shared function emojiHTML * don't increase emoji size in issue title * Update templates/repo/issue/view_content/add_reaction.tmpl Co-Authored-By: 6543 <6543@obermui.de> * Support for emoji rendering in various templates * Render code and review comments as they should be * Better way to handle mail subjects * insert unicode from tribute selection * Add template helper for plain text when needed * Use existing replace function I forgot about * Don't include emoji greater than Unicode Version 12 Only include emoji and aliases in JSON * Update build/generate-emoji.go * Tweak regex slightly to really match everything including random invisible characters. Run tests for every emoji we have * final updates * code review * code review * hard code gitea custom emoji to match previous behavior * Update .eslintrc Co-Authored-By: silverwind <me@silverwind.io> * disable preempt Co-authored-by: silverwind <me@silverwind.io> Co-authored-by: 6543 <6543@obermui.de> Co-authored-by: Lauris BH <lauris@nix.lv> Co-authored-by: guillep2k <18600385+guillep2k@users.noreply.github.com>tokarchuk/v1.17
mrsdizzie
5 years ago
committed by
GitHub
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// Copyright 2020 The Gitea Authors. All rights reserved.
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// Copyright 2015 Kenneth Shaw
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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|
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// +build ignore
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package main |
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import ( |
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"encoding/json" |
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"flag" |
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"fmt" |
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"go/format" |
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"io/ioutil" |
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"log" |
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"net/http" |
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"regexp" |
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"sort" |
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"strconv" |
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"strings" |
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) |
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|
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const ( |
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gemojiURL = "https://raw.githubusercontent.com/github/gemoji/master/db/emoji.json" |
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maxUnicodeVersion = 12 |
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) |
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var ( |
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flagOut = flag.String("o", "modules/emoji/emoji_data.go", "out") |
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) |
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// Gemoji is a set of emoji data.
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type Gemoji []Emoji |
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// Emoji represents a single emoji and associated data.
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type Emoji struct { |
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Emoji string `json:"emoji"` |
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Description string `json:"description,omitempty"` |
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Aliases []string `json:"aliases"` |
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UnicodeVersion string `json:"unicode_version,omitempty"` |
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} |
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// Don't include some fields in JSON
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func (e Emoji) MarshalJSON() ([]byte, error) { |
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type emoji Emoji |
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x := emoji(e) |
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x.UnicodeVersion = "" |
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x.Description = "" |
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return json.Marshal(x) |
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} |
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func main() { |
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var err error |
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flag.Parse() |
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// generate data
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buf, err := generate() |
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if err != nil { |
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log.Fatal(err) |
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} |
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|
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// write
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err = ioutil.WriteFile(*flagOut, buf, 0644) |
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if err != nil { |
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log.Fatal(err) |
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} |
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} |
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|
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var replacer = strings.NewReplacer( |
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"main.Gemoji", "Gemoji", |
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"main.Emoji", "\n", |
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"}}", "},\n}", |
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", Description:", ", ", |
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", Aliases:", ", ", |
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", UnicodeVersion:", ", ", |
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) |
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var emojiRE = regexp.MustCompile(`\{Emoji:"([^"]*)"`) |
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func generate() ([]byte, error) { |
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var err error |
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// load gemoji data
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res, err := http.Get(gemojiURL) |
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if err != nil { |
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return nil, err |
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} |
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defer res.Body.Close() |
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|
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// read all
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body, err := ioutil.ReadAll(res.Body) |
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if err != nil { |
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return nil, err |
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} |
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// unmarshal
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var data Gemoji |
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err = json.Unmarshal(body, &data) |
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if err != nil { |
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return nil, err |
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} |
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var re = regexp.MustCompile(`keycap|registered|copyright`) |
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tmp := data[:0] |
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// filter out emoji that require greater than max unicode version
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for i := range data { |
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val, _ := strconv.ParseFloat(data[i].UnicodeVersion, 64) |
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if int(val) <= maxUnicodeVersion { |
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// remove these keycaps for now they really complicate matching since
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// they include normal letters in them
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if re.MatchString(data[i].Description) { |
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continue |
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} |
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tmp = append(tmp, data[i]) |
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} |
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} |
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data = tmp |
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sort.Slice(data, func(i, j int) bool { |
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return data[i].Aliases[0] < data[j].Aliases[0] |
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}) |
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aliasPairs := make([]string, 0) |
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aliasMap := make(map[string]int, len(data)) |
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for i, e := range data { |
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if e.Emoji == "" || len(e.Aliases) == 0 { |
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continue |
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} |
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for _, a := range e.Aliases { |
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if a == "" { |
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continue |
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} |
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aliasMap[a] = i |
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aliasPairs = append(aliasPairs, ":"+a+":", e.Emoji) |
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} |
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} |
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// gitea customizations
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i, ok := aliasMap["tada"] |
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if ok { |
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data[i].Aliases = append(data[i].Aliases, "hooray") |
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} |
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i, ok = aliasMap["laughing"] |
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if ok { |
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data[i].Aliases = append(data[i].Aliases, "laugh") |
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} |
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// add header
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str := replacer.Replace(fmt.Sprintf(hdr, gemojiURL, data)) |
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// change the format of the unicode string
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str = emojiRE.ReplaceAllStringFunc(str, func(s string) string { |
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var err error |
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s, err = strconv.Unquote(s[len("{Emoji:"):]) |
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if err != nil { |
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panic(err) |
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} |
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return "{" + strconv.QuoteToASCII(s) |
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}) |
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// write a JSON file to use with tribute
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file, _ := json.Marshal(data) |
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_ = ioutil.WriteFile("assets/emoji.json", file, 0644) |
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// format
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return format.Source([]byte(str)) |
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} |
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const hdr = ` |
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// Copyright 2020 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package emoji |
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// Code generated by gen.go. DO NOT EDIT.
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// Sourced from %s
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//
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var GemojiData = %#v |
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` |
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@ -0,0 +1,119 @@ |
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// Copyright 2020 The Gitea Authors. All rights reserved.
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// Copyright 2015 Kenneth Shaw
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package emoji |
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import ( |
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"strings" |
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"sync" |
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) |
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// Gemoji is a set of emoji data.
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type Gemoji []Emoji |
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// Emoji represents a single emoji and associated data.
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type Emoji struct { |
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Emoji string |
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Description string |
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Aliases []string |
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UnicodeVersion string |
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} |
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var ( |
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// codeMap provides a map of the emoji unicode code to its emoji data.
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codeMap map[string]int |
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// aliasMap provides a map of the alias to its emoji data.
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aliasMap map[string]int |
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// codeReplacer is the string replacer for emoji codes.
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codeReplacer *strings.Replacer |
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// aliasReplacer is the string replacer for emoji aliases.
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aliasReplacer *strings.Replacer |
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once sync.Once |
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) |
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func loadMap() { |
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once.Do(func() { |
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// initialize
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codeMap = make(map[string]int, len(GemojiData)) |
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aliasMap = make(map[string]int, len(GemojiData)) |
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// process emoji codes and aliases
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codePairs := make([]string, 0) |
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aliasPairs := make([]string, 0) |
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for i, e := range GemojiData { |
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if e.Emoji == "" || len(e.Aliases) == 0 { |
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continue |
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} |
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|
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// setup codes
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codeMap[e.Emoji] = i |
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codePairs = append(codePairs, e.Emoji, ":"+e.Aliases[0]+":") |
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// setup aliases
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for _, a := range e.Aliases { |
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if a == "" { |
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continue |
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} |
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aliasMap[a] = i |
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aliasPairs = append(aliasPairs, ":"+a+":", e.Emoji) |
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} |
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} |
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// create replacers
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codeReplacer = strings.NewReplacer(codePairs...) |
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aliasReplacer = strings.NewReplacer(aliasPairs...) |
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}) |
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} |
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// FromCode retrieves the emoji data based on the provided unicode code (ie,
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// "\u2618" will return the Gemoji data for "shamrock").
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func FromCode(code string) *Emoji { |
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loadMap() |
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i, ok := codeMap[code] |
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if !ok { |
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return nil |
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} |
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return &GemojiData[i] |
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} |
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|
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// FromAlias retrieves the emoji data based on the provided alias in the form
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// "alias" or ":alias:" (ie, "shamrock" or ":shamrock:" will return the Gemoji
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// data for "shamrock").
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func FromAlias(alias string) *Emoji { |
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loadMap() |
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if strings.HasPrefix(alias, ":") && strings.HasSuffix(alias, ":") { |
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alias = alias[1 : len(alias)-1] |
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} |
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|
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i, ok := aliasMap[alias] |
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if !ok { |
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return nil |
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} |
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|
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return &GemojiData[i] |
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} |
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|
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// ReplaceCodes replaces all emoji codes with the first corresponding emoji
|
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// alias (in the form of ":alias:") (ie, "\u2618" will be converted to
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// ":shamrock:").
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func ReplaceCodes(s string) string { |
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loadMap() |
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return codeReplacer.Replace(s) |
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} |
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|
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// ReplaceAliases replaces all aliases of the form ":alias:" with its
|
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// corresponding unicode value.
|
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func ReplaceAliases(s string) string { |
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loadMap() |
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return aliasReplacer.Replace(s) |
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} |
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@ -0,0 +1,67 @@ |
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// Copyright 2020 The Gitea Authors. All rights reserved.
|
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// Copyright 2015 Kenneth Shaw
|
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// Use of this source code is governed by a MIT-style
|
||||
// license that can be found in the LICENSE file.
|
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|
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package emoji |
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|
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import ( |
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"reflect" |
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"testing" |
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) |
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|
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func TestDumpInfo(t *testing.T) { |
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t.Logf("codes: %d", len(codeMap)) |
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t.Logf("aliases: %d", len(aliasMap)) |
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} |
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|
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func TestLookup(t *testing.T) { |
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a := FromCode("\U0001f37a") |
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b := FromCode("🍺") |
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c := FromAlias(":beer:") |
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d := FromAlias("beer") |
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|
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if !reflect.DeepEqual(a, b) { |
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t.Errorf("a and b should equal") |
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} |
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if !reflect.DeepEqual(b, c) { |
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t.Errorf("b and c should equal") |
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} |
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if !reflect.DeepEqual(c, d) { |
||||
t.Errorf("c and d should equal") |
||||
} |
||||
if !reflect.DeepEqual(a, d) { |
||||
t.Errorf("a and d should equal") |
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} |
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|
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m := FromCode("\U0001f44d") |
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n := FromAlias(":thumbsup:") |
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o := FromAlias("+1") |
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|
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if !reflect.DeepEqual(m, n) { |
||||
t.Errorf("m and n should equal") |
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} |
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if !reflect.DeepEqual(n, o) { |
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t.Errorf("n and o should equal") |
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} |
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if !reflect.DeepEqual(m, o) { |
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t.Errorf("m and o should equal") |
||||
} |
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} |
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|
||||
func TestReplacers(t *testing.T) { |
||||
tests := []struct { |
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f func(string) string |
||||
v, exp string |
||||
}{ |
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{ReplaceCodes, ":thumbsup: +1 for \U0001f37a! 🍺 \U0001f44d", ":thumbsup: +1 for :beer:! :beer: :+1:"}, |
||||
{ReplaceAliases, ":thumbsup: +1 :+1: :beer:", "\U0001f44d +1 \U0001f44d \U0001f37a"}, |
||||
} |
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|
||||
for i, x := range tests { |
||||
s := x.f(x.v) |
||||
if s != x.exp { |
||||
t.Errorf("test %d `%s` expected `%s`, got: `%s`", i, x.v, x.exp, s) |
||||
} |
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} |
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} |
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|
After Width: | Height: | Size: 13 KiB |
@ -0,0 +1,201 @@ |
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Apache License |
||||
Version 2.0, January 2004 |
||||
http://www.apache.org/licenses/ |
||||
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TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION |
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