icomefromthenet/reverse-regex

Convert Regular Expressions into text, for testing

v0.1.0.0 2018-08-15 07:15 UTC

Requires

• php: ^7.1
• doctrine/common: ^2.8
• patchwork/utf8: >=1.3

Requires (Dev)

• phpunit/phpunit: ^7.0

MIT

• Lewis Dyer

• generator
• testing
• regex
• test data

README

Use Regular Expressions to generate text strings can be used in the following situations:

1. Wrting test data for web forms.
2. Writing test data for databases.
3. Generating test data for regular expressions.

##Example

use ReverseRegex\Lexer;
use ReverseRegex\Random\SimpleRandom;
use ReverseRegex\Parser;
use ReverseRegex\Generator\Scope;

# load composer
require "vendor/autoload.php";

$lexer = new  Lexer('[a-z]{10}');
$gen   = new SimpleRandom(10007);
$result = '';

$parser = new Parser($lexer,new Scope(),new Scope());
$parser->parse()->getResult()->generate($result,$gen);

echo $result;

Produces

jmceohykoa
aclohnotga
jqegzuklcv
ixdbpbgpkl
kcyrxqqfyw
jcxsjrtrqb
kvaczmawlz
itwrowxfxh
auinmymonl
dujyzuhoag
vaygybwkfm

Other examples

1. Australian phone numbers
2. Australian postcodes
3. Mobile numbers

##Installing

To install use composer

{
  "require" : {
	"icomefromthenet/reverse-regex" : "dev-master"
    }
}

Writing a Regex

1. Escape all meta-characters i.e. if you need to escape the character in a regex you will need to escape here.
2. Not all meta-characters are suppported see list below.
3. Use \X{####} to specify unicode value use [\X{####}-\X{####}] to specify range.
4. Unicdoe \p not supported, I could not find a port of UCD to php, maybe in the future support be added.
5. Quantifiers are applied to left most group, literal or character class.
6. Beware of the + and * quantifers they apply a possible maxium number of occurances up to PHP_INT_MAX.

Regex Support

Example	Description	Resulting String
(abcf)	Support literals this would generate string	`abcf`
\((abcf)\)	Escape meta characters as you normally would in a regex	`(abcf)`
[a-z]	Character Classes are supported	`a`
a{5}	Quantifiers supported always last group or literal or character class	`aaaaa`
a{1,5}	Range Quantifiers supported	`aa`
a|b|c	Alternation supported pick one of three at random	`b`
a|(y|d){5}	Groups supported with alternation and quantifiers	`ddddd` or `a` or `yyyyy`
\d	Digit shorthand equ [0-9]	`1`
\w	word character shorthand equ [a-zA-Z0-9_]	`j`
\W	Non word character shorthand equ [^a-zA-Z0-9_]	`j`
\s	White space shorthand ASCII only	` `
\S	Non White space shorthand ASCII only	`i`
.	Dot all ASCII characters	`$`
* + ?	Short hand quantifiers, recommend not use them
\X{00FF}[\X{00FF}-\X{00FF}]	Unicode ranges
\xFF[\xFF-\xFF]	Hex ranges