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package multibase
import (
"strconv"
"strings"
"unicode/utf8"
)
var base256emojiTable = [256]rune{
// Curated list, this is just a list of things that *somwhat* are related to our comunity
'🚀', '🪐', '☄', '🛰', '🌌', // Space
'🌑', '🌒', '🌓', '🌔', '🌕', '🌖', '🌗', '🌘', // Moon
'🌍', '🌏', '🌎', // Our Home, for now (earth)
'🐉', // Dragon!!!
'☀', // Our Garden, for now (sol)
'💻', '🖥', '💾', '💿', // Computer
// The rest is completed from https://home.unicode.org/emoji/emoji-frequency/ at the time of creation (december 2021) (the data is from 2019), most used first until we reach 256.
// We exclude modifier based emojies (such as flags) as they are bigger than one single codepoint.
// Some other emojies were removed adhoc for various reasons.
'😂', '❤', '😍', '🤣', '😊', '🙏', '💕', '😭', '😘', '👍',
'😅', '👏', '😁', '🔥', '🥰', '💔', '💖', '💙', '😢', '🤔',
'😆', '🙄', '💪', '😉', '☺', '👌', '🤗', '💜', '😔', '😎',
'😇', '🌹', '🤦', '🎉', '💞', '✌', '✨', '🤷', '😱', '😌',
'🌸', '🙌', '😋', '💗', '💚', '😏', '💛', '🙂', '💓', '🤩',
'😄', '😀', '🖤', '😃', '💯', '🙈', '👇', '🎶', '😒', '🤭',
'❣', '😜', '💋', '👀', '😪', '😑', '💥', '🙋', '😞', '😩',
'😡', '🤪', '👊', '🥳', '😥', '🤤', '👉', '💃', '😳', '✋',
'😚', '😝', '😴', '🌟', '😬', '🙃', '🍀', '🌷', '😻', '😓',
'⭐', '✅', '🥺', '🌈', '😈', '🤘', '💦', '✔', '😣', '🏃',
'💐', '☹', '🎊', '💘', '😠', '☝', '😕', '🌺', '🎂', '🌻',
'😐', '🖕', '💝', '🙊', '😹', '🗣', '💫', '💀', '👑', '🎵',
'🤞', '😛', '🔴', '😤', '🌼', '😫', '⚽', '🤙', '☕', '🏆',
'🤫', '👈', '😮', '🙆', '🍻', '🍃', '🐶', '💁', '😲', '🌿',
'🧡', '🎁', '⚡', '🌞', '🎈', '❌', '✊', '👋', '😰', '🤨',
'😶', '🤝', '🚶', '💰', '🍓', '💢', '🤟', '🙁', '🚨', '💨',
'🤬', '✈', '🎀', '🍺', '🤓', '😙', '💟', '🌱', '😖', '👶',
'🥴', '▶', '➡', '❓', '💎', '💸', '⬇', '😨', '🌚', '🦋',
'😷', '🕺', '⚠', '🙅', '😟', '😵', '👎', '🤲', '🤠', '🤧',
'📌', '🔵', '💅', '🧐', '🐾', '🍒', '😗', '🤑', '🌊', '🤯',
'🐷', '☎', '💧', '😯', '💆', '👆', '🎤', '🙇', '🍑', '❄',
'🌴', '💣', '🐸', '💌', '📍', '🥀', '🤢', '👅', '💡', '💩',
'👐', '📸', '👻', '🤐', '🤮', '🎼', '🥵', '🚩', '🍎', '🍊',
'👼', '💍', '📣', '🥂',
}
var base256emojiReverseTable map[rune]byte
func init() {
base256emojiReverseTable = make(map[rune]byte, len(base256emojiTable))
for i, v := range base256emojiTable {
base256emojiReverseTable[v] = byte(i)
}
}
func base256emojiEncode(in []byte) string {
var l int
for _, v := range in {
l += utf8.RuneLen(base256emojiTable[v])
}
var out strings.Builder
out.Grow(l)
for _, v := range in {
out.WriteRune(base256emojiTable[v])
}
return out.String()
}
type base256emojiCorruptInputError struct {
index int
char rune
}
func (e base256emojiCorruptInputError) Error() string {
return "illegal base256emoji data at input byte " + strconv.FormatInt(int64(e.index), 10) + ", char: '" + string(e.char) + "'"
}
func (e base256emojiCorruptInputError) String() string {
return e.Error()
}
func base256emojiDecode(in string) ([]byte, error) {
out := make([]byte, utf8.RuneCountInString(in))
var stri int
for i := 0; len(in) > 0; i++ {
r, n := utf8.DecodeRuneInString(in)
in = in[n:]
var ok bool
out[i], ok = base256emojiReverseTable[r]
if !ok {
return nil, base256emojiCorruptInputError{stri, r}
}
stri += n
}
return out, nil
}
|
