Search Results for "regular expression"
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Showing 365 open source projects for "regular expression"
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1
RE2/J
linear time regular expression matching in Java
RE2/J is a high-performance regular expression engine implemented in pure Java as a port of Google’s C++ RE2 library. Unlike traditional regex engines such as Java’s java.util.regex, PCRE, or Perl’s implementation—which rely on backtracking and can suffer from catastrophic exponential runtimes—RE2/J guarantees linear-time matching relative to input size. It achieves this efficiency by simulating all possible matches in a single pass using a nondeterministic finite automaton (NFA), ensuring predictable and safe performance even with complex patterns. ... -
2
re2
Alternative to backtracking regular expression engines
RE2 is a fast, safe, thread-friendly alternative to backtracking regular expression engines like those used in PCRE, Perl, and Python. It is a C++ library. This is the source code repository for RE2, a regular expression library. There is a fair amount of documentation (including code snippets) in the re2.h header file. Unless otherwise noted, the RE2 source files are distributed under the BSD-style license found in the LICENSE file. -
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grex
A command-line tool and library for generating regular expressions
grex is a library as well as a command-line utility that is meant to simplify the often complicated and tedious task of creating regular expressions. It does so by automatically generating a single regular expression from user-provided test cases. The resulting expression is guaranteed to match the test cases which it was generated from. This project has started as a Rust port of the JavaScript tool regexgen written by Devon Govett. Although a lot of further useful features could be added to it, its development was apparently ceased several years ago. ... -
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Notepad++
Free, open-source text editor
Notepad++ is a source code editor that is free to use and is available in various languages. The source code editor is also written in C++ and is based on the Scintilla editing component. Notepad++ offers a wide range of features, such as autosaving, line bookmarking, simultaneous editing, tabbed document interface, and many more features. Over 140 plugins are also available to use in the default program. Notepad++ takes advantage of higher execution speed and smaller program size by... -
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Scripting Course
Books, reference guides and resources on Regular Expressions
Scripting Course is a curated learning hub for command-line text processing, scripting languages, regular expressions, and Vim. It brings together numerous books and reference guides maintained by the same author. Topics include Python, JavaScript, and Ruby regular expressions alongside GNU grep, sed, awk, and Coreutils. Separate material covers Python fundamentals, practical Python projects, Ruby and Perl one-liners, Linux command-line computing, and Vim. The repository also maintains... -
6
Path-to-RegExp
Turn a path string such as `/user/:name` into a regular expression
The path argument is used to define parameters and populate keys. The RegExp returned by path-to-regexp is intended for ordered data (e.g. pathnames, hostnames). It can not handle arbitrarily ordered data (e.g. query strings, URL fragments, JSON, etc). When using paths that contain query strings, you need to escape the question mark (?) to ensure it does not flag the parameter as optional. Backslashes need to be escaped with another backslash in JavaScript strings. It is possible to write an... -
7
nvim-regexplainer
Describe the regexp under the cursor
Describe the regular expression under the cursor. You need to install regex with nvim-treesitter, as well as the grammar for whichever host language you're using. -
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alp
Access Log Profiler
alp is Access Log Profiler. -
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Awkward Array
Manipulate JSON-like data with NumPy-like idioms
Awkward Array is a library for nested, variable-sized data, including arbitrary-length lists, records, mixed types, and missing data, using NumPy-like idioms. Arrays are dynamically typed, but operations on them are compiled and fast. Their behavior coincides with NumPy when array dimensions are regular and generalizes when they're not. -
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find-my-way
A crazy fast HTTP router
A crazy fast HTTP router, internally uses a highly performant Radix Tree (aka compact Prefix Tree), supports route params, wildcards, and it's framework is independent. You can set a custom length for parameters in parametric (standard, regex and multi) routes by using maxParamLength option, the default value is 100 characters. If you are using a regex-based route, find-my-way will throw an error if detects potentially catastrophic exponential-time regular expressions (internally uses... -
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Outlines
Structured Outputs
Outlines is a Python library for making language models generate predictable, structured outputs. Instead of repairing malformed responses afterward, it constrains generation to match a requested type or format. Developers can require predefined choices, primitive Python types, Pydantic models, JSON schemas, regular expressions, function signatures, or custom grammars. The same interface works with local models, inference servers, and hosted APIs from several providers. Supported... -
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CLI text processing with GNU awk
Example based guide to mastering GNU awk
Learn GNU awk is an example-based book and practice repository dedicated to mastering GNU awk for command-line text processing. It teaches the language through hundreds of short demonstrations rather than relying mainly on abstract syntax descriptions. Readers learn how awk can select records, work with fields, transform text, apply regular expressions, and build reusable processing commands. More advanced material develops progressively from the same practical style. The repository includes... -
13
Notepadqq
A simple, general-purpose editor for Linux
...These are what we believe to be the most important things for any tool that will be used multiple times a day. Notepadqq gives you a hand with multiple selections, regular expression searches, and real-time highlighting. Code is meant to be read. Notepadqq is the first text editor to offer first-class support for displaying mathematical formulas so that you can express your ideas more clearly than ever. Start a comment in your favorite programming language, then start writing in LaTeX notation to augment your comment with beautifully typeset mathematics. -
14
CREG
CREG application POSIX/GNU regular expression commandline tool
The creg application is a POSIX/GNU regular expression commandline tool for searching with patterns in text-strings or text-files. -
15
Scooter
Interactive find and replace in the terminal
Scooter is an interactive find-and-replace terminal UI app. Search with either a fixed string or a regular expression, enter a replacement, and interactively toggle which instances you want to replace. You can also specify a regex pattern for the file paths you want to search. If the instance you're attempting to replace has changed since the search was performed, e.g. if you've switched branches and that line no longer exists, that particular replacement won't occur: you'll see all such cases at the end. -
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Diun
Receive notifications when an image is updated on a Docker registry
Diun is a CLI application written in Go and delivered as a single executable (and a Docker image) to receive notifications when a Docker image is updated on a Docker registry. With Go, this can be done with an independent binary distribution across all platforms and architectures that Go supports. This support includes Linux, macOS, and Windows, on architectures like amd64, i386, ARM, PowerPC, and others. -
17
Awesome Mac
Collect premium software in various categories
...Feel free to star and fork. Reading and writing tools, text editors, office, markdown tools, note-taking, journaling. Ebooks, RSS, developer tools, IDEs, developer utilities, etc. Regular expression editors, API development and analysis, network analysis, command line tools, frameworks for hybrid applications, version control. Virtualization, databases, design and product, design tools, prototyping and mind-mapping tools, screen capturing software, etc. Major software download sites, there are a number of OSX Mac software sites. ... -
18
AQL
Advanced Query Language
The clauses are beginning from "([{" and ending by "}])" and are separated by ",;" There are three basic types like Boolean (true, false), numeric and string in "'\"" List of operators: Name Description << Output ? Logical if @ Loop ?$ Returns true if variable defined ?| Logical or ?& Logical and ?! Logical negation ?/ Logical regular expression matches /- Split string by regular expression /+ Replace by regular expression // All matches = Assignment + Addition or concatenation - Subtraction / Division * Multiplication -
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TUI apps
Terminal User Interface (TUI) apps
TUI Apps is a collection of terminal applications created mainly for learning, experimentation, and interactive programming practice. Many of the applications are built with Python and the Textual framework. The repository includes a Python regular-expression playground and more than 100 regex exercises. Separate programs provide over 50 grep exercises, over 50 sed exercises, and over 80 GNU awk exercises. A broader CLI text-processing app contains more than 70 additional challenges, while another section covers beginner-to-intermediate Python practice. The collection also includes small terminal games such as Square Tic Tac Toe and Connect Square. ... -
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Algorithms
Solutions for some common algorithm problems written in Java
Algorithms is an educational Java repository containing tested solutions to common computer science and programming problems. It covers binary trees, linked lists, strings, bit operations, mathematics, sequences, arrays, sorting, and miscellaneous interview-style exercises. Many categories contain several related problems so learners can compare recurring techniques and data structures. Some problems include more than one implementation, allowing different approaches to be examined side by... -
21
LinkChecker
Check links in web documents or full websites
LinkChecker is a free, GPL licensed website validator. LinkChecker checks links in web documents or full websites. It runs on Python 3 systems, requiring Python 3.8 or later. The version in the pip repository may be old, to find out how to get the latest code, plus platform-specific information and other advice see doc/install.txt in the source code archive. If you do not want to install any additional libraries/dependencies you can use the Docker image which is published on GitHub... -
22
fd
A simple, fast and user-friendly alternative to 'find'
fd is a program to find entries in your filesytem. It is a simple, fast and user-friendly alternative to find. While it does not aim to support all of find's powerful functionality, it provides sensible (opinionated) defaults for a majority of use cases. First, to get an overview of all available command line options, you can either run fd -h for a concise help message or fd --help for a more detailed version. fd is designed to find entries in your filesystem. The most basic search you can... -
23
Loggifly
Get Alerts from your Docker Container Logs
LoggiFly is a lightweight, open-source monitoring tool designed to watch Docker container logs in real time and trigger alerts, notifications, or automated actions based on predefined keywords or regular expression patterns. Instead of manually scanning logs for issues or relying solely on centralized monitoring stacks, LoggiFly proactively inspects streams of container output and notifies users through services like Ntfy, Slack, Discord, Telegram, or webhooks when significant events occur. It supports plain text, regex, and multi-line pattern matching, and its flexible alert templating lets operators tailor messages for clarity and context, including attaching relevant log excerpts. ... -
24
Massren
massren - easily rename multiple files using your text editor
Massren is a command line tool that can be used to rename multiple files using your own text editor. Multiple-rename tools are usually difficult to use from the command line since any regular expression needs to be escaped, and each tool uses its own syntax and flavor of regex. The advantage of massren is that you are using the text editor you use every day, so can use all its features. The tool works by creating a file that contains the filenames of the target directory and opening this file in the text editor. You can then modify the filenames there directly. ... -
25
gojq
Pure Go implementation of jq
...You can also embed gojq as a library to your Go products. gojq is purely implemented with Go language and is completely portable. jq depends on the C standard library so the availability of math functions depends on the library. jq also depends on the regular expression library and it makes building scripts complex. gojq implements nice error messages for invalid query and JSON input. The error message of jq is sometimes difficult to tell where to fix the query. gojq does not keep the order of object keys. I understand this might cause problems for some scripts but basically, we should not rely on the order of object keys. ...
