Simple static site generator
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

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1.8 KiB

// This is taken from Hugo
//
// 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 main
import (
"bytes"
"sync"
"github.com/kyokomi/emoji"
)
var (
emojiInit sync.Once
emojis = make(map[string][]byte)
emojiDelim = []byte(":")
emojiWordDelim = []byte(" ")
emojiMaxSize int
)
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 e, ok := emojis[string(emojiKey)]; ok {
source = append(source[:j], append(e, 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)
}
}
}