A generic, simple & intuitive Regular Expression Analyzer & Composer for PHP, Python, Javascript
Regex v.1.2.0 (js only)
see also:
- ModelView a simple, fast, powerful and flexible MVVM framework for JavaScript
- tico a tiny, super-simple MVC framework for PHP
- LoginManager a simple, barebones agnostic login manager for PHP, JavaScript, Python
- SimpleCaptcha a simple, image-based, mathematical captcha with increasing levels of difficulty for PHP, JavaScript, Python
- Dromeo a flexible, and powerful agnostic router for PHP, JavaScript, Python
- PublishSubscribe a simple and flexible publish-subscribe pattern implementation for PHP, JavaScript, Python
- Importer simple class & dependency manager and loader for PHP, JavaScript, Python
- Contemplate a fast and versatile isomorphic template engine for PHP, JavaScript, Python
- HtmlWidget html widgets, made as simple as possible, both client and server, both desktop and mobile, can be used as (template) plugins and/or standalone for PHP, JavaScript, Python (can be used as plugins for Contemplate)
- Paginator simple and flexible pagination controls generator for PHP, JavaScript, Python
- Formal a simple and versatile (Form) Data validation framework based on Rules for PHP, JavaScript, Python
- Dialect a cross-vendor & cross-platform SQL Query Builder, based on GrammarTemplate, for PHP, JavaScript, Python
- DialectORM an Object-Relational-Mapper (ORM) and Object-Document-Mapper (ODM), based on Dialect, for PHP, JavaScript, Python
- Unicache a simple and flexible agnostic caching framework, supporting various platforms, for PHP, JavaScript, Python
- Xpresion a simple and flexible eXpression parser engine (with custom functions and variables support), based on GrammarTemplate, for PHP, JavaScript, Python
- Regex Analyzer/Composer Regular Expression Analyzer and Composer for PHP, JavaScript, Python
These were used mostly as parts of other projects but uploaded here as standalone.
See /test/js/test.js under /test folder for examples of how to use
Regex.Analyzer Live Playground Example:
Regex.Composer Live Playground Example:
Example: (see /test/js/test.js)
// // use as: node test.js "your_regex_here" > output.txt "use strict"; var echo = console.log; var Regex = require('../../src/js/Regex.js'); echo("Regex.VERSION = " + Regex.VERSION); echo("Testing Regex.Composer"); echo("==============================================================="); var identifierSubRegex = Regex.Composer( ) .characterGroup( ) .characters( '_' ) .range( 'a', 'z' ) .end( ) .characterGroup( ) .characters( '_' ) .range( 'a', 'z' ) .range( '0', '9' ) .end( ).zeroOrMore( ) .partial( ); var outregex = Regex.Composer( ) .SOL( ) .nonCaptureGroup( ).either( ) .regexp( identifierSubRegex ) .namedGroup( 'token' ).literal( '**aabb**' ).end( ) .any( ) .space( ) .digit( false ).oneOrMore( ) .end( 2 ).zeroOrMore( false ) .backReference( 'token' ) .EOL( ) .compose( 'i' ); echo("Partial : " + identifierSubRegex); echo("Composed : " + outregex.pattern.toString()); echo("Expected : " + "/^(?:[_a-z][_a-z0-9]*|(\\*\\*aabb\\*\\*)|.|\\s|\\D+)*?\\1$/i"); echo("Output : " + JSON.stringify(outregex, null, 4)); echo("==============================================================="); echo(); var anal, peekChars, sampleStr, minLen, maxLen, groups, regexp, inregex = "/(?P<named_group>[abcde]+)fgh(?P=named_group)(?# a comment)/i"; echo("Testing Regex.Analyzer"); echo("==============================================================="); // test it anal = Regex.Analyzer( inregex ); peekChars = anal.peek( ); minLen = anal.minimum( ); maxLen = anal.maximum( ); regexp = anal.compile( {i:anal.fl.i?1:0} ); sampleStr = anal.sample( 1, 5 ); groups = anal.groups(); for(var i=0; i<5; i++) { var m = sampleStr[i].match(regexp); sampleStr[i] = {sample:sampleStr[i], match:(m ? 'yes' : 'no'), groups: {}}; if ( m ) { for(var g in groups) if ( Object.prototype.hasOwnProperty.call(groups,g) ) sampleStr[i].groups[g] = m[groups[g]]; } } echo("Input : " + inregex.toString( )); echo("Regular Expression : " + anal.input()); echo("Regular Expression Flags : " + Object.keys(anal.fl).join(',')); echo("Reconstructed Regular Expression : " + anal.source()); echo("==============================================================="); echo("Regular Expression Syntax Tree : "); echo(JSON.stringify(anal.tree(true), null, 4)); echo("==============================================================="); echo("Regular Expression (Named) Matched Groups : "); echo(JSON.stringify(groups, null, 4)); echo("==============================================================="); echo("Regular Expression Peek Characters : "); echo(JSON.stringify({positive:Object.keys(peekChars.positive||{}),negative:Object.keys(peekChars.negative||{})}, null, 4)); echo("==============================================================="); echo("Regular Expression Minimum / Maximum Length : "); echo(JSON.stringify({minimum:minLen,maximum:-1===maxLen?'unlimited':maxLen}, null, 4)); echo("==============================================================="); echo("Regular Expression Sample Match Strings : "); echo(JSON.stringify(sampleStr, null, 4)); echo("===============================================================");Result
Regex.VERSION = 1.0.0 Testing Regex.Composer =============================================================== Partial : [_a-z][_a-z0-9]* Composed : /^(?:[_a-z][_a-z0-9]*|(\*\*aabb\*\*)|.|\s|\D+)*?\1$/i Expected : /^(?:[_a-z][_a-z0-9]*|(\*\*aabb\*\*)|.|\s|\D+)*?\1$/i Output : { "source": "^(?:[_a-z][_a-z0-9]*|(\\*\\*aabb\\*\\*)|.|\\s|\\D+)*?\\1$", "flags": "i", "groups": { "1": 1, "token": 1 }, "pattern": {} } =============================================================== Testing Regex.Analyzer =============================================================== Input : /(?P<named_group>[abcde]+)fgh(?P=named_group)(?# a comment)/i Regular Expression : (?P<named_group>[abcde]+)fgh(?P=named_group)(?# a comment) Regular Expression Flags : i Reconstructed Regular Expression : ([abcde]+)fgh\1 =============================================================== Regular Expression Syntax Tree : { "type": "Sequence", "value": [ { "type": "Group", "value": { "type": "Sequence", "value": [ { "type": "Quantifier", "value": { "type": "CharacterGroup", "value": [ { "type": "Characters", "value": [ "a", "b", "c", "d", "e" ] } ] }, "flags": { "MatchOneOrMore": 1, "min": 1, "max": -1, "isGreedy": 1 } } ] }, "flags": { "NamedGroup": 1, "GroupName": "named_group", "GroupIndex": 1 } }, { "type": "String", "value": "fgh" }, { "type": "Special", "value": "1", "flags": { "BackReference": 1, "GroupName": "named_group", "GroupIndex": 1 } }, { "type": "Comment", "value": " a comment" } ] } =============================================================== Regular Expression (Named) Matched Groups : { "1": 1, "named_group": 1 } =============================================================== Regular Expression Peek Characters : { "positive": [ "a", "b", "c", "d", "e", "A", "B", "C", "D", "E" ], "negative": [] } =============================================================== Regular Expression Minimum / Maximum Length : { "minimum": 5, "maximum": "unlimited" } =============================================================== Regular Expression Sample Match Strings : [ { "sample": "AdbFGHAdb", "match": "yes", "groups": { "1": "Adb", "named_group": "Adb" } }, { "sample": "CDfghCD", "match": "yes", "groups": { "1": "CD", "named_group": "CD" } }, { "sample": "CBCfghCBC", "match": "yes", "groups": { "1": "CBC", "named_group": "CBC" } }, { "sample": "BbaAFGHBbaA", "match": "yes", "groups": { "1": "BbaA", "named_group": "BbaA" } }, { "sample": "EfghE", "match": "yes", "groups": { "1": "E", "named_group": "E" } } ] ===============================================================