stringi is a comprehensive toolkit for character string processing. It provides consistent operations for manipulating, searching, transforming and comparing text across different languages, locales and character encodings.
The package uses the International Components for Unicode (ICU) libraries to provide sophisticated text processing beyond simple byte-oriented string operations. It is particularly useful when applications must handle multilingual data, perform locale-sensitive comparisons or work with text containing complex Unicode characters.
Its functions follow a consistent naming convention and operate on vectorised string data. The package also provides much of the underlying functionality used by stringr, making it an important component of the wider R text-processing ecosystem.
This is free and open source software.
Key Features
- Supports Unicode-aware string operations across different languages and character sets.
- Provides powerful pattern matching using ICU regular expressions.
- Supports fixed-string matching, regular-expression matching and locale-sensitive comparisons.
- Offers string concatenation, splitting, extraction, replacement, padding and wrapping.
- Provides case conversion, case folding and locale-sensitive text transformations.
- Implements Unicode normalisation using standard normal forms.
- Supports transliteration between writing systems and character representations.
- Offers locale-aware collation, sorting and comparison.
- Handles conversion between character encodings and detects common encoding problems.
- Provides string boundary analysis for words, sentences and other text units.
- Supports random string generation and text formatting operations.
- Includes date and time formatting through ICU facilities.
- Works with character vectors and missing values using consistent function interfaces.
- Cross-platform support – runs on Linux, macOS, and Windows.
Website: github.com/gagolews/stringi
Support:
Developer: Marek Gagolewski and contributors
License: BSD 3-Clause ‘New’ or ‘Revised’ License
stringi is written in C++ and C. Learn C++ with our recommended free books and free tutorials. Learn C with our recommended free books and free tutorials.
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