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// Copyright 2020 The Gitea Authors. All rights reserved.
// Copyright 2015 Kenneth Shaw
// SPDX-License-Identifier: MIT
//go:build ignore
package main
import (
"flag"
"fmt"
"go/format"
"io"
"log"
"net/http"
"os"
"regexp"
"sort"
"strconv"
"strings"
"unicode/utf8"
"code.gitea.io/gitea/modules/json"
)
const (
gemojiURL = "https://raw.githubusercontent.com/github/gemoji/master/db/emoji.json"
maxUnicodeVersion = 15
)
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.Fatalf("generate err: %v", err)
}
// write
err = os.WriteFile(*flagOut, buf, 0o644)
if err != nil {
log.Fatalf("WriteFile err: %v", 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 := io.ReadAll(res.Body)
if err != nil {
return nil, err
}
// unmarshal
var data Gemoji
err = json.Unmarshal(body, &data)
if err != nil {
return nil, err
}
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)
_ = os.WriteFile("assets/emoji.json", file, 0o644)
// 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 modifier 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)
}
}
}
sort.Slice(data, func(i, j int) bool {
return data[i].Aliases[0] < data[j].Aliases[0]
})
// 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.
// SPDX-License-Identifier: MIT
package emoji
// Code generated by build/generate-emoji.go. DO NOT EDIT.
// Sourced from %s
var GemojiData = %#v
`
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