Emoji: Generate emoji detecting functions at compile time.

Suggested by jvalim
This commit is contained in:
lain 2019-09-13 18:27:32 +02:00
parent 3ff5532220
commit 6fe2f554c3

View file

@ -261,28 +261,34 @@ defmodule Pleroma.Emoji do
end)
end
{:ok, file} = File.read("lib/pleroma/emoji-data.txt")
@external_resource "lib/pleroma/emoji-data.txt"
@unicode_emoji file
emojis =
@external_resource
|> File.read!()
|> String.split("\n")
|> Enum.filter(fn line -> String.starts_with?(line, ["1", "2", "3", "4"]) end)
|> Enum.map(fn line -> String.split(line) |> List.first() end)
|> Enum.filter(fn line -> line != "" and not String.starts_with?(line, "#") end)
|> Enum.map(fn line ->
case String.split(line, "..") do
line
|> String.split(";", parts: 2)
|> hd()
|> String.trim()
|> String.split("..")
|> case do
[number] ->
String.to_integer(number, 16)
<<String.to_integer(number, 16)::utf8>>
[first, last] ->
Range.new(String.to_integer(first, 16), String.to_integer(last, 16))
|> Enum.to_list()
String.to_integer(first, 16)..String.to_integer(last, 16)
|> Enum.map(&<<&1::utf8>>)
end
end)
|> List.flatten()
|> Enum.filter(&is_integer/1)
|> Enum.uniq()
|> Enum.map(fn n -> :unicode.characters_to_binary([n], :utf32) end)
def is_unicode_emoji?(str) do
str in @unicode_emoji
for emoji <- emojis do
def is_unicode_emoji?(unquote(emoji)), do: true
end
def is_unicode_emoji?(_), do: false
end