iris:emoji-kotlin

The missing emoji library for Kotlin.

iris:emoji-kotlin is a lightweight Kotlin library that helps you use Emojis in your java applications.

It is copy of my Java repo iris:emoji-java.

And it in its turn was forked from emoji-java

Reasons I forked it:

• ❗️ The most important reason I forked it was I have found how to improve its speed up to 5x times!
• My repo supports complex emojis of combination {basic_emoji}{skin_color}?{gender}?
• It supports of bugged VK.COM web-version emojis, where ending char \uFE0F is absent

And of course, extend useful methods.

How to get it?

Via Direct Download:

• Use releases tab to download the jar directly.
• Download JSON-java dependency from http://mvnrepository.com/artifact/org.json/json.

How to use it?

EmojiManager

The EmojiManager provides several static methods to search through the emojis database:

• getForTag returns all the emojis for a given tag
• getForAlias returns the emoji for an alias
• getAll returns all the emojis
• isEmoji checks if a string is an emoji
• containsEmoji checks if a string contains any emoji

You can also query the metadata:

• getAllTags returns the available tags

Or get everything:

• getAll returns all the emojis

Emoji model

An Emoji is a POJO (plain old java object), which provides the following methods:

• getUnicode returns the unicode representation of the emoji
• getUnicode(Fitzpatrick) returns the unicode representation of the emoji with the provided Fitzpatrick modifier. If the emoji doesn't support the Fitzpatrick modifiers, this method will throw an UnsupportedOperationException. If the provided Fitzpatrick is null, this method will return the unicode of the emoji.
• getDescription returns the (optional) description of the emoji
• getAliases returns a list of aliases for this emoji
• getTags returns a list of tags for this emoji
• getHtmlDecimal returns an html decimal representation of the emoji
• getHtmlHexadecimal returns an html decimal representation of the emoji
• supportsFitzpatrick returns true if the emoji supports the Fitzpatrick modifiers, else false

Fitzpatrick modifiers

Some emojis now support the use of Fitzpatrick modifiers that gives the choice between 5 shades of skin tones:

Modifier	Type
🏻	type_1_2
🏼	type_3
🏽	type_4
🏾	type_5
🏿	type_6

We defined the format of the aliases including a Fitzpatrick modifier as:

:ALIAS|TYPE:

A few examples:

:boy|type_1_2:
:swimmer|type_4:
:santa|type_6:

EmojiParser

To unicode

To replace all the aliases and the html representations found in a string by their unicode, use EmojiParser#parseToUnicode(String).

For example:

val str = "An :grinning:awesome :smiley:string 😄with a few :wink:emojis!"
val result = EmojiParser.parseToUnicode(str)
println(result)
// Prints:
// "An 😀awesome 😃string 😄with a few 😉emojis!"

To aliases

To replace all the emoji's unicodes found in a string by their aliases, use EmojiParser#parseToAliases(String).

For example:

val str = "An 😀awesome 😃string with a few 😉emojis!"
val result = EmojiParser.parseToAliases(str)
println(result)
// Prints:
// "An :grinning:awesome :smiley:string with a few :wink:emojis!"

By default, the aliases will parse and include any Fitzpatrick modifier that would be provided. If you want to remove or ignore the Fitzpatrick modifiers, use EmojiParser#parseToAliases(String, FitzpatrickAction). Examples:

val str = "Here is a boy: \uD83D\uDC66\uD83C\uDFFF!"
println(EmojiParser.parseToAliases(str))
println(EmojiParser.parseToAliases(str, FitzpatrickAction.PARSE))
// Prints twice: "Here is a boy: :boy|type_6:!"
println(EmojiParser.parseToAliases(str, FitzpatrickAction.REMOVE))
// Prints: "Here is a boy: :boy:!"
println(EmojiParser.parseToAliases(str, FitzpatrickAction.IGNORE))
// Prints: "Here is a boy: :boy:🏿!"

To html

To replace all the emoji's unicodes found in a string by their html representation, use EmojiParser#parseToHtmlDecimal(String) or EmojiParser#parseToHtmlHexadecimal(String).

For example:

val str = "An 😀awesome 😃string with a few 😉emojis!"

val resultDecimal = EmojiParser.parseToHtmlDecimal(str)
println(resultDecimal)
// Prints:
// "An 😀awesome 😃string with a few 😉emojis!"

val resultHexadecimal = EmojiParser.parseToHtmlHexadecimal(str)
println(resultHexadecimal)
// Prints:
// "An 😀awesome 😃string with a few 😉emojis!"

By default, any Fitzpatrick modifier will be removed. If you want to ignore the Fitzpatrick modifiers, use EmojiParser#parseToAliases(String, FitzpatrickAction). Examples:

val str = "Here is a boy: \uD83D\uDC66\uD83C\uDFFF!"
println(EmojiParser.parseToHtmlDecimal(str))
println(EmojiParser.parseToHtmlDecimal(str, FitzpatrickAction.PARSE))
println(EmojiParser.parseToHtmlDecimal(str, FitzpatrickAction.REMOVE))
// Print 3 times: "Here is a boy: 👦!"
println(EmojiParser.parseToHtmlDecimal(str, FitzpatrickAction.IGNORE))
// Prints: "Here is a boy: 👦🏿!"

The same applies for the methods EmojiParser#parseToHtmlHexadecimal(String) and EmojiParser#parseToHtmlHexadecimal(String, FitzpatrickAction).

Remove emojis

You can easily remove emojis from a string using one of the following methods:

• EmojiParser#removeAllEmojis(String): removes all the emojis from the String
• EmojiParser#removeAllEmojisExcept(String, Collection<Emoji>): removes all the emojis from the String, except the ones in the Collection
• EmojiParser#removeEmojis(String, Collection<Emoji>): removes the emojis in the Collection from the String

For example:

val str = "An 😀awesome 😃string with a few 😉emojis!"
val collection = ArrayList<Emoji>()
collection.add(EmojiManager.getForAlias("wink")) // This is 😉

println(EmojiParser.removeAllEmojis(str))
println(EmojiParser.removeAllEmojisExcept(str, collection))
println(EmojiParser.removeEmojis(str, collection))

// Prints:
// "An awesome string with a few emojis!"
// "An awesome string with a few 😉emojis!"
// "An 😀awesome 😃string with a few emojis!"

Extract Emojis from a string

You can search a string of mixed emoji/non-emoji characters and have all of the emoji characters returned as a Collection.

• EmojiParser#extractEmojis(String): returns all emojis as a Collection. This will include duplicates if emojis are present more than once.

Credits

iris-emoji-java is based on github/vdurmont/emoji-java.

And in its turn emoji-java originally used the data provided by the github/gemoji project. It is still based on it but has evolved since.

Available Emojis

See a table of the available emojis and their aliases HERE.