Unicode to ASCII transliteration
Project description
Any-Ascii
Unicode to ASCII transliteration
Table of Contents
Description
Converts Unicode text to a reasonable representation using only ASCII.
For most characters in Unicode, Any-Ascii provides an ASCII-only replacement string. Text is converted character-by-character without considering the context. The mappings for each script are based on popular existing romanization schemes. Symbolic characters are converted based on their meaning or appearance. All ASCII characters in the input are left unchanged, every other character is replaced with printable ASCII characters. Unknown characters are removed.
Examples
Representative examples for different languages comparing the Any-Ascii output to the conventional romanization.
Language (Script) | Input | Output | Conventional |
---|---|---|---|
French (Latin) | René François Lacôte | Rene Francois Lacote | Rene Francois Lacote |
German (Latin) | Großer Hörselberg | Grosser Horselberg | Grosser Hoerselberg |
Vietnamese (Latin) | Trần Hưng Đạo | Tran Hung Dao | Tran Hung Dao |
Norwegian (Latin) | Nærøy | Naeroy | Naroy |
Ancient Greek (Greek) | Φειδιππίδης | Feidippidis | Pheidippides |
Modern Greek (Greek) | Δημήτρης Φωτόπουλος | Dimitris Fotopoylos | Dimitris Fotopoulos |
Russian (Cyrillic) | Борис Николаевич Ельцин | Boris Nikolaevich El'tsin | Boris Nikolayevich Yeltsin |
Ukrainian (Cyrillic) | Володимир Горбулін | Volodimir Gorbulin | Volodymyr Horbulin |
Bulgarian (Cyrillic) | Търговище | T'rgovishche | Targovishte |
Mandarin Chinese (Han) | 深圳 | ShenZhen | Shenzhen |
Cantonese Chinese (Han) | 深水埗 | ShenShuiBu | Sham Shui Po |
Korean (Hangul) | 화성시 | HwaSeongSi | Hwaseong-si |
Korean (Han) | 華城市 | HuaChengShi | Hwaseong-si |
Japanese (Hiragana) | さいたま | saitama | Saitama |
Japanese (Han) | 埼玉県 | QiYuXian | Saitama-ken |
Japanese (Katakana) | トヨタ | toyota | Toyota |
Amharic (Ethiopic) | ደብረ ዘይት | debre zeyt | Dobre Zeyit |
Tigrinya (Ethiopic) | ደቀምሓረ | dek'emhare | Dekemhare |
Arabic | دمنهور | dmnhwr | Damanhur |
Armenian | Աբովյան | Abovyan | Abovyan |
Georgian | სამტრედია | samt'redia | Samtredia |
Hebrew | אברהם הלוי פרנקל | 'vrhm hlvy frnkl | Abraham Halevi Fraenkel |
Manding (N'Ko) | ߞߐߣߊߞߙߌ߫ | konakri | konakiri |
Unified English Braille (Braille) | ⠠⠎⠁⠽⠀⠭⠀⠁⠛ | +say x ag | Say it again |
Bengali | ময়মনসিংহ | mymnsimh | Mymensingh |
Burmese (Myanmar) | ထန်တလန် | htntln | Thantlang |
Gujarati | પોરબંદર | porbmdr | Porbandar |
Hindi (Devanagari) | महासमुंद | mhasmumd | Mahasamund |
Kannada | ಬೆಂಗಳೂರು | bemgluru | Bengaluru |
Khmer | សៀមរាប | siemrab | Siem Reap |
Lao | ສະຫວັນນະເຂດ | sahvannaekhd | Savannakhet |
Malayalam | കളമശ്ശേരി | klmsseri | Kalamassery |
Odia | ଗଜପତି | gjpti | Gajapati |
Punjabi (Gurmukhi) | ਜਲੰਧਰ | jlmdhr | Jalandhar |
Sinhala | රත්නපුර | rtnpur | Ratnapura |
Tamil | கன்னியாகுமரி | knniyakumri | Kanniyakumari |
Telugu | శ్రీకాకుళం | srikakulm | Srikakulam |
Thai | สงขลา | sngkhla | Songkhla |
Symbols | Input | Output |
---|---|---|
Emojis | 😎 👑 🍎 | :sunglasses: :crown: :apple: |
Misc. | ☆ ♯ ♰ ⚄ ⛌ | * # + 5 X |
Letterlike | № ℳ ⅋ ⅍ | No M & A/S |
Background
Unicode is the foundation for text in all modern software: it’s how all mobile phones, desktops, and other computers represent the text of every language. People are using Unicode every time they type a key on their phone or desktop computer, and every time they look at a web page or text in an application. *
Unicode is the universal character set, a global standard to support all the world's languages. It contains 140,000+ characters used by 150+ scripts along with emojis and various symbols. Typically encoded into bytes using UTF-8.
ASCII is the most compatible character set, established in 1967. It is a subset of Unicode and UTF-8 consisting of 128 characters using 7-bits. The printable characters are English letters, digits, and punctuation, with the remaining being control characters. The characters found on a standard US keyboard correspond to the printable ASCII characters.
... expressed only in the original non-control ASCII range so as to be as widely compatible with as many existing tools, languages, and serialization formats as possible and avoid display issues in text editors and source control. *
A language is written using characters from a specific script. A script can be alphabetic, logographic, syllabic, or something else. Some languages use multiple scripts: Japanese uses Kanji, Hiragana, and Katakana. Some scripts are used by multiple languages: Han characters are used in Chinese, Japanese, and Korean. The script used by English and ASCII is known as the Latin script.
When converting text between languages there are multiple properties that can be preserved:
- Meaning: Translation
- Appearance: Preserving the visual appearance of characters when converting between scripts is rarely possible and requires readers to have knowledge of the source language.
- Sound: Transcription uses the spelling and pronunciation rules of the target language to produce text that will be pronounced as accurately as possible to the original.
- Spelling: Transliteration converts each character individually using predictable rules. A reversible transliteration allows for reconstruction of the original text by using unique mappings for each character.
Romanization is the conversion into the Latin script using transliteration or transcription or a mix of both. Romanization is most commonly used when representing the names of people and places.
South Korea's Ministry of Culture & Tourism: Clear to anyone, Romanization is for foreigners. Geographical names are Romanized to help foreigners find the place they intend to go to and help them remember cities, villages and mountains they visited and climbed. But it is Koreans who make up the Roman transcription of their proper names to print on their business cards and draw up maps for international tourists. Sometimes, they write the lyrics of a Korean song in Roman letters to help foreigners join in a singing session or write part of a public address (in Korean) in Roman letters for a visiting foreign VIP. In this sense, it is for both foreigners and the local public. The Romanization system must not be a code only for the native English-speaking community here but an important tool for international communication between Korean society, foreign residents in the country and the entire external world. If any method causes much confusion because it is unable to properly reflect the original sound to the extent that different words are transcribed into the same Roman characters too frequently, it definitely is not a good system. *
Details
Comprehensive: Supports as many Unicode characters as possible. The benefits of providing full support even for rare or historic characters outweighs the small overhead of including them.
Simple: Easy to use, understand, and update. Able to be implemented with consistent behavior across multiple different programming languages. Has benefits for performance and data size.
Useful: Provides reasonable approximations of the spelling or pronunciation. Based on popular romanization systems in general use.
Implementations
Any-Ascii is implemented in 8 different programming languages.
Go
package main
import (
"github.com/hunterwb/any-ascii"
)
func main() {
s := anyascii.Transliterate("άνθρωποι")
// anthropoi
}
Go 1.10+ Compatible
Java
String s = AnyAscii.transliterate("άνθρωποι");
// anthropoi
Java 6+ compatible
Available from JitPack
JavaScript
Node.js
const anyAscii = require('any-ascii');
const s = anyAscii('άνθρωποι');
// anthropoi
Node.js 4.0+ compatible
Install latest release: npm install any-ascii
Install pre-release: npm install hunterwb/any-ascii
Python
from anyascii import anyascii
s = anyascii('άνθρωποι')
# anthropoi
Python 3.3+ compatible
Install latest release: pip install anyascii
Install pre-release: pip install https://github.com/hunterwb/any-ascii/archive/master.zip#subdirectory=python
Ruby
require 'any_ascii'
s = AnyAscii.transliterate('άνθρωποι')
# anthropoi
Ruby 2.0+ compatible
Install latest release: gem install any_ascii
Use pre-release:
# Gemfile
gem 'any_ascii', git: 'https://github.com/hunterwb/any-ascii', glob: 'ruby/any_ascii.gemspec'
Rust
use any_ascii::any_ascii;
let s = any_ascii("άνθρωποι");
// anthropoi
Rust 1.20+ compatible
Use latest release:
# Cargo.toml
[dependencies]
any_ascii = "0.1.6"
Use pre-release:
# Cargo.toml
[dependencies]
any_ascii = { git = "https://github.com/hunterwb/any-ascii" }
CLI
$ anyascii άνθρωποι
anthropoi
Use cd rust && cargo build --release
to build a native executable to rust/target/release/anyascii
Shell
$ anyascii άνθρωποι
anthropoi
POSIX-compliant
.NET
Install from NuGet
C#
using AnyAscii;
string s = "άνθρωποι".Transliterate();
// anthropoi
Unidecode
Any-Ascii is an alternative to (and inspired by) Unidecode and its many ports. Any-Ascii is more up-to-date and supports more than twice as many characters. Unidecode was originally written in 2001 with minor updates through 2016. It does not support any characters outside of the BMP.
Compare table.tsv
and unidecode/table.tsv
for a complete comparison between Any-Ascii and Unidecode.
Note that the Unidecode output has been modified slightly and that unknown characters are replaced by "[?] "
while they are removed by Any-Ascii.
See Also
ALA-LC: Romanization Tables
BGN/PCGN: Guidance on Romanization Systems
Discord: Emojis
ISO: Transliteration Standards
KNAB: Romanization Systems
Thomas T. Pedersen: Transliteration of Non-Roman Scripts
UNGEGN: Working Group on Romanization Systems
Unicode Technical Site
Wikipedia: Romanization
Wiktionary: Romanization
Project details
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