forgejo-federation/build/generate-emoji.go
mrsdizzie 3af51f1ab7
Update emoji dataset with skin tone variants (#11678)
* Update emoji dataset with skin tone variants

Since the format of emoji that support skin tone modifiers is predictable we can add different variants into our dataset when generating it so that we can match and properly style most skin tone variants of emoji. No real code change here other than what generates the dataset and the data itself.

* use escape unicode sequence in map

Co-authored-by: techknowlogick <techknowlogick@gitea.io>
2020-06-02 02:22:40 -04:00

221 lines
4.7 KiB
Go

// Copyright 2020 The Gitea Authors. All rights reserved.
// Copyright 2015 Kenneth Shaw
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
// +build ignore
package main
import (
"encoding/json"
"flag"
"fmt"
"go/format"
"io/ioutil"
"log"
"net/http"
"regexp"
"sort"
"strconv"
"strings"
"unicode/utf8"
)
const (
gemojiURL = "https://raw.githubusercontent.com/github/gemoji/master/db/emoji.json"
maxUnicodeVersion = 12
)
var (
flagOut = flag.String("o", "modules/emoji/emoji_data.go", "out")
)
// Gemoji is a set of emoji data.
type Gemoji []Emoji
// Emoji represents a single emoji and associated data.
type Emoji struct {
Emoji string `json:"emoji"`
Description string `json:"description,omitempty"`
Aliases []string `json:"aliases"`
UnicodeVersion string `json:"unicode_version,omitempty"`
SkinTones bool `json:"skin_tones,omitempty"`
}
// Don't include some fields in JSON
func (e Emoji) MarshalJSON() ([]byte, error) {
type emoji Emoji
x := emoji(e)
x.UnicodeVersion = ""
x.Description = ""
x.SkinTones = false
return json.Marshal(x)
}
func main() {
var err error
flag.Parse()
// generate data
buf, err := generate()
if err != nil {
log.Fatal(err)
}
// write
err = ioutil.WriteFile(*flagOut, buf, 0644)
if err != nil {
log.Fatal(err)
}
}
var replacer = strings.NewReplacer(
"main.Gemoji", "Gemoji",
"main.Emoji", "\n",
"}}", "},\n}",
", Description:", ", ",
", Aliases:", ", ",
", UnicodeVersion:", ", ",
", SkinTones:", ", ",
)
var emojiRE = regexp.MustCompile(`\{Emoji:"([^"]*)"`)
func generate() ([]byte, error) {
var err error
// load gemoji data
res, err := http.Get(gemojiURL)
if err != nil {
return nil, err
}
defer res.Body.Close()
// read all
body, err := ioutil.ReadAll(res.Body)
if err != nil {
return nil, err
}
// unmarshal
var data Gemoji
err = json.Unmarshal(body, &data)
if err != nil {
return nil, err
}
var skinTones = make(map[string]string)
skinTones["\U0001f3fb"] = "Light Skin Tone"
skinTones["\U0001f3fc"] = "Medium-Light Skin Tone"
skinTones["\U0001f3fd"] = "Medium Skin Tone"
skinTones["\U0001f3fe"] = "Medium-Dark Skin Tone"
skinTones["\U0001f3ff"] = "Dark Skin Tone"
var tmp Gemoji
//filter out emoji that require greater than max unicode version
for i := range data {
val, _ := strconv.ParseFloat(data[i].UnicodeVersion, 64)
if int(val) <= maxUnicodeVersion {
tmp = append(tmp, data[i])
}
}
data = tmp
sort.Slice(data, func(i, j int) bool {
return data[i].Aliases[0] < data[j].Aliases[0]
})
aliasMap := make(map[string]int, len(data))
for i, e := range data {
if e.Emoji == "" || len(e.Aliases) == 0 {
continue
}
for _, a := range e.Aliases {
if a == "" {
continue
}
aliasMap[a] = i
}
}
// gitea customizations
i, ok := aliasMap["tada"]
if ok {
data[i].Aliases = append(data[i].Aliases, "hooray")
}
i, ok = aliasMap["laughing"]
if ok {
data[i].Aliases = append(data[i].Aliases, "laugh")
}
// write a JSON file to use with tribute (write before adding skin tones since we can't support them there yet)
file, _ := json.Marshal(data)
_ = ioutil.WriteFile("assets/emoji.json", file, 0644)
// Add skin tones to emoji that support it
var (
s []string
newEmoji string
newDescription string
newData Emoji
)
for i := range data {
if data[i].SkinTones {
for k, v := range skinTones {
s = strings.Split(data[i].Emoji, "")
if utf8.RuneCountInString(data[i].Emoji) == 1 {
s = append(s, k)
} else {
// insert into slice after first element because all emoji that support skin tones
// have that modifer placed at this spot
s = append(s, "")
copy(s[2:], s[1:])
s[1] = k
}
newEmoji = strings.Join(s, "")
newDescription = data[i].Description + ": " + v
newAlias := data[i].Aliases[0] + "_" + strings.ReplaceAll(v, " ", "_")
newData = Emoji{newEmoji, newDescription, []string{newAlias}, "12.0", false}
data = append(data, newData)
}
}
}
// add header
str := replacer.Replace(fmt.Sprintf(hdr, gemojiURL, data))
// change the format of the unicode string
str = emojiRE.ReplaceAllStringFunc(str, func(s string) string {
var err error
s, err = strconv.Unquote(s[len("{Emoji:"):])
if err != nil {
panic(err)
}
return "{" + strconv.QuoteToASCII(s)
})
// format
return format.Source([]byte(str))
}
const hdr = `
// Copyright 2020 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package emoji
// Code generated by gen.go. DO NOT EDIT.
// Sourced from %s
//
var GemojiData = %#v
`