Tool to analyze a regular expression and understand its interpretation mechanism and extracting internal properties through the analyzer.
Regular Expression Analyzer - dCode
Tag(s) : Data Processing
dCode is free and its tools are a valuable help in games, maths, geocaching, puzzles and problems to solve every day!
A suggestion ? a feedback ? a bug ? an idea ? Write to dCode!
Regular Expression Analyzer
Regular Expression Analyzer
Answers to Questions (FAQ)
How to analyze a regular expression?
The software of regex analysis decomposes a regular expression in order to find each component (characters, pattern, matches) and describe its meaning. The analysis is based on a cut of the pattern matching expression.
Example: /\d{2,5}/ correspond to \d (digit) {2,5} between 2 and 5 times.
How to calculate the length of a string catchable by regex?
The script gets minimum and maximum sizes of each element of the expression and calculates the total.
Example: (ab|cde){2,3} has for minimum length 4 (case abab) and maximum 9 (case cdecdecde)
Example: a+ has for minimal length 1 (case a) and maximal infinite (case aaaaa...a)
How to test a regexp?
Currently dCode can do regular expression searches but no real test feature. To test a regular expression, dCode's advice is to use the site Regex101 here (link) with a Javascript inerface that allow seeing instantly (by underlined characters) detected items or captured in the regular expression.
Source code
dCode retains ownership of the online 'Regular Expression Analyzer' tool source code. Except explicit open source licence (indicated CC / Creative Commons / free), any 'Regular Expression Analyzer' algorithm, applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any 'Regular Expression Analyzer' function (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) and no data download, script, copy-paste, or API access for 'Regular Expression Analyzer' will be for free, same for offline use on PC, tablet, iPhone or Android ! dCode is free and online.
Need Help ?
Please, check our dCode Discord community for help requests!
NB: for encrypted messages, test our automatic cipher identifier!
Questions / Comments
Thanks to your feedback and relevant comments, dCode has developed the best 'Regular Expression Analyzer' tool, so feel free to write! Thank you!