6207d56b95
* Fixed capturing groups matching to invalid results * Fixed parents of recursive quantifiers not expanding properly * Fixed LookAhead sometimes adding to result
76 lines
2.5 KiB
Markdown
76 lines
2.5 KiB
Markdown
# NREX: Node RegEx
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[](https://travis-ci.org/leezh/nrex)
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** Version 0.2 **
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Small node-based regular expression library. It only does text pattern
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matchhing, not replacement. To use add the files `nrex.hpp`, `nrex.cpp`
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and `nrex_config.h` to your project and follow the example:
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nrex regex;
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regex.compile("^(fo+)bar$");
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nrex_result captures[regex.capture_size()];
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if (regex.match("foobar", captures))
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{
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std::cout << captures[0].start << std::endl;
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std::cout << captures[0].length << std::endl;
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}
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More details about its use is documented in `nrex.hpp`
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Currently supported features:
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* Capturing `()` and non-capturing `(?:)` groups
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* Any character `.` (includes newlines)
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* Shorthand caracter classes `\w\W\s\S\d\D`
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* POSIX character classes such as `[[:alnum:]]`
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* Bracket expressions such as `[A-Za-z]`
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* Simple quantifiers `?`, `*` and `+`
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* Range quantifiers `{0,1}`
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* Lazy (non-greedy) quantifiers `*?`
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* Begining `^` and end `$` anchors
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* Word boundaries `\b`
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* Alternation `|`
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* ASCII `\xFF` code points
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* Unicode `\uFFFF` code points
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* Positive `(?=)` and negative `(?!)` lookahead
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* Positive `(?<=)` and negative `(?<!)` lookbehind (fixed length and no alternations)
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* Backreferences `\1` and `\g{1}` (limited by default to 9 - can be unlimited)
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## License
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Copyright (c) 2015-2016, Zher Huei Lee
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All rights reserved.
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would
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be appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not
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be misrepresented as being the original software.
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3. This notice may not be removed or altered from any source
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distribution.
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# Changes
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## Version 0.2 (2016-08-04)
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* Fixed capturing groups matching to invalid results
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* Fixed parents of recursive quantifiers not expanding properly
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* Fixed LookAhead sometimes adding to result
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* More verbose unit testing
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## Version 0.1 (2015-12-04)
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* Initial release
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