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
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Regular Expression Analyzer
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Regular Expression Analyzer
Tool to analyze a regular expression and understand its interpretation mechanism and extracting internal properties through the analyzer.
Answers to Questions
How to analyze a regular expression?
The software of regex analysis decomposes a regular expression in order to find each component and describe its meaning. The analysis is based on a cut of the expression.
Example: /\d{2,5}/ correspond to \d (digit) {2,5} between 2 and 5 times.
To test a regular expression, dCode advices to use the site Regex101 [] that allow seeing instantly (by underlined characters) detected items or captured in the regular expression.
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){2,5} 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)
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Source code
dCode retains ownership of the source code of the script Regular Expression Analyzer online. Except explicit open source licence (indicated Creative Commons / free), any algorithm, applet, snippet, software (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any function (convert, solve, decrypt, encrypt, decipher, cipher, decode, code, translate) written in any informatic langauge (PHP, Java, C#, Python, Javascript, Matlab, etc.) which dCode owns rights will not be given for free. So if you need to download the online Regular Expression Analyzer script for offline use, check contact page !
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