ICU

ICU

Emoji Ecosystem

国际Unicode组件（International Components for Unicode），广泛使用的开源库，提供Unicode和国际化支持，包括表情符号处理。

ICU is the reference implementation for Unicode algorithms. It provides C/C++ and Java libraries for text handling, including: character encoding conversion, text boundary analysis (critical for emoji grapheme clusters), collation (sorting), and locale-sensitive formatting.

Many platforms and languages use ICU internally: Node.js, Python, Android, macOS/iOS, and most web browsers. The `Intl.Segmenter` API in JavaScript, which correctly splits text including emoji, is typically backed by ICU.

ICU also provides emoji-aware text segmentation, which is essential for correctly counting and manipulating emoji in strings.

相关术语

CLDR (CLDR) CLDR (CLDR)
通用语言环境数据存储库，Unicode项目之一，提供包括100多种语言表情符号名称和搜索关键词在内的本地化数据。 字素簇 字素簇
用户感知到的单个字符单位，可能由多个Unicode码位组合而成，但显示为单一视觉元素。 统一码 统一码
为所有书写系统和符号集（包括表情符号）中的每个字符分配唯一编号的通用字符编码标准。

相关工具

🌐 表情符号翻译器 表情符号翻译器
查看 15 种语言的表情符号名称和关键词，了解任意表情符号在日语、韩语、西班牙语等语言中的叫法。

相关故事

Why string.length Lies: Grapheme Clusters and Emoji Length
Why string.length fails for emoji, what grapheme clusters are, and how to correctly count characters in JavaScript, Python, and more.
Handling Emojis in JSON and REST APIs
How to correctly handle emoji in JSON serialization, REST API design, database storage, and HTTP headers — including surrogate pair pitfalls.
Storing Emojis in Databases: MySQL, PostgreSQL, and SQLite
How to correctly store emoji in MySQL, PostgreSQL, and SQLite databases. Covers utf8mb4, collations, column sizing, and common pitfalls.