Tool to analyze a regular expression and understand its interpretation mechanism and extracting internal properties.
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.
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.
Example: /\d{2,5}/ correspond to \d (digit) {2,5} between 2 and 5 times.
To test a regular expression, 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).
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Source code
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