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