125 lines
3.8 KiB
Nim
125 lines
3.8 KiB
Nim
# Copyright 2023 Mattia Giambirtone & All Contributors
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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## Emoji parsing/removal utility
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## Code refactored and adapted from https://github.com/thecodedmind/nimoj
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import json
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import os
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import httpclient
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import tables
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import strutils
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import re
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import strformat
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const emojiEndpoint = "https://raw.githubusercontent.com/omnidan/node-emoji/master/lib/emoji.json"
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const emojiPath = "assets/emojis.json"
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type Emojizer* = ref object
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## A wrapper that saves
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## us parsing the JSON file
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## everytime
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emojiList: JsonNode
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proc newEmojizer*: Emojizer =
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## Returns a new Emojizer object
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new(result)
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result.emojiList = newJObject()
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proc downloadEmojiList =
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## Downloads the list of emojis and saves
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## it to a JSON file
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let client = newHttpClient()
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let list = client.getContent(emojiEndpoint)
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writeFile(emojiPath, list)
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proc getEmojiJson(self: Emojizer): JsonNode =
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## Returns the JSON object parsed from
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## te emoji file
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if not fileExists(emoji_path):
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downloadEmojiList()
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var temp: string
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temp.toUgly(self.emojiList)
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if temp == "{}":
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self.emojiList = parseFile(emojiPath)
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result = self.emojiList
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proc findEmoji*(self: Emojizer, part: string): string =
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## Searches the emoji dict for emoji names matching
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## search, returns at the first hit
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for k, v in self.getEmojiJson().getFields().pairs:
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if part.replace(re":") in k:
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return v.getStr()
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proc findEmojis*(self: Emojizer, part: string): seq[string] =
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## Searches the emoji dict for emoji names matching
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## search, returns all hits
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for k, v in self.getEmojiJson().getFields().pairs:
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if part.replace(re":") in k:
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result.add(v.getStr())
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proc findEmojiCodes*(self: Emojizer, part: string): seq[string] =
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## Similar to findEmojis, but looks for emoji codes instead
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## (such as :happy: or :santa:)
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for k, v in self.getEmojiJson().getFields().pairs:
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if part.replace(re":") in k:
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result.add(k)
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proc getEmoji*(self: Emojizer, emoji: string, default: string = "unknown_emoji"): string =
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## Searches the emoji dict for emojis matching the search
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return self.getEmojiJson(){emoji.replace(re":")}.getStr(default)
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proc getEmojiCode*(self: Emojizer, emoji: string): string =
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## Searches the emoji dict for emojis matching the search
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for k, v in self.getEmojiJson().getFields().pairs:
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if emoji == v.getStr():
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return k
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proc emojize*(self: Emojizer, msg: string): string =
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## Searches string for emoji tokens, such as `:santa:`
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## and swaps in the emoji character
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result = msg
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var emojis = msg.findAll(re":(.+?):")
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for emoji in emojis:
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let e = self.getEmoji(emoji)
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if e != "":
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result = msg.replace(emoji, e)
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proc demojize*(self: Emojizer, msg: string, strip: bool): string =
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## Searches string for emoji characters.
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## If strip is false, this function swaps
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## in the emoji token, such as :santa:
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## otherwise the emoji is simply removed
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result = msg
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for k, v in self.getEmojiJson().getFields().pairs:
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if v.getStr in result:
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if strip:
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result = msg.replace(v.getStr(), "")
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else:
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result = msg.replace(v.getStr(), &":{self.getEmojiCode(v.getStr())}:")
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