mirror of
https://github.com/gohugoio/hugo.git
synced 2024-12-23 06:00:52 +00:00
90 lines
1.9 KiB
Go
90 lines
1.9 KiB
Go
// Copyright 2016 The Hugo Authors. All rights reserved.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package helpers
|
|
|
|
import (
|
|
"bytes"
|
|
"sync"
|
|
|
|
"github.com/kyokomi/emoji/v2"
|
|
)
|
|
|
|
var (
|
|
emojiInit sync.Once
|
|
|
|
emojis = make(map[string][]byte)
|
|
|
|
emojiDelim = []byte(":")
|
|
emojiWordDelim = []byte(" ")
|
|
emojiMaxSize int
|
|
)
|
|
|
|
// Emojify "emojifies" the input source.
|
|
// Note that the input byte slice will be modified if needed.
|
|
// See http://www.emoji-cheat-sheet.com/
|
|
func Emojify(source []byte) []byte {
|
|
emojiInit.Do(initEmoji)
|
|
|
|
start := 0
|
|
k := bytes.Index(source[start:], emojiDelim)
|
|
|
|
for k != -1 {
|
|
|
|
j := start + k
|
|
|
|
upper := j + emojiMaxSize
|
|
|
|
if upper > len(source) {
|
|
upper = len(source)
|
|
}
|
|
|
|
endEmoji := bytes.Index(source[j+1:upper], emojiDelim)
|
|
nextWordDelim := bytes.Index(source[j:upper], emojiWordDelim)
|
|
|
|
if endEmoji < 0 {
|
|
start++
|
|
} else if endEmoji == 0 || (nextWordDelim != -1 && nextWordDelim < endEmoji) {
|
|
start += endEmoji + 1
|
|
} else {
|
|
endKey := endEmoji + j + 2
|
|
emojiKey := source[j:endKey]
|
|
|
|
if emoji, ok := emojis[string(emojiKey)]; ok {
|
|
source = append(source[:j], append(emoji, source[endKey:]...)...)
|
|
}
|
|
|
|
start += endEmoji
|
|
}
|
|
|
|
if start >= len(source) {
|
|
break
|
|
}
|
|
|
|
k = bytes.Index(source[start:], emojiDelim)
|
|
}
|
|
|
|
return source
|
|
}
|
|
|
|
func initEmoji() {
|
|
emojiMap := emoji.CodeMap()
|
|
|
|
for k, v := range emojiMap {
|
|
emojis[k] = []byte(v)
|
|
|
|
if len(k) > emojiMaxSize {
|
|
emojiMaxSize = len(k)
|
|
}
|
|
}
|
|
}
|