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Programming language: Go
License: MIT License

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README

genex GoDoc GoCover Go Report Card

Genex package for Go

Easy and efficient package to expand any given regex into all the possible strings that it can match.

This is the code that powers namegrep.

Usage

package main

import (
    "fmt"
    "regexp/syntax"

    "github.com/alixaxel/genex"
)

func main() {
    charset, _ := syntax.Parse(`[0-9a-z]`, syntax.Perl)

    if input, err := syntax.Parse(`(foo|bar|baz){1,2}\d`, syntax.Perl); err == nil {
        fmt.Println("Count:", genex.Count(input, charset, 3))

        genex.Generate(input, charset, 3, func(output string) {
            fmt.Println("[*]", output)
        })
    }
}

Output

Count: 120

[*] foo0
[*] ...
[*] foo9
[*] foofoo0
[*] ...
[*] foofoo9
[*] foobar0
[*] ...
[*] foobar9
[*] foobaz0
[*] ...
[*] foobaz9
[*] bar0
[*] ...
[*] bar9
[*] barfoo0
[*] ...
[*] barfoo9
[*] barbar0
[*] ...
[*] barbar9
[*] barbaz0
[*] ...
[*] barbaz9
[*] baz0
[*] ...
[*] baz9
[*] bazfoo0
[*] ...
[*] bazfoo9
[*] bazbar0
[*] ...
[*] bazbar9
[*] bazbaz0
[*] ...
[*] bazbaz9

Install

go get github.com/alixaxel/genex

License

MIT


*Note that all licence references and agreements mentioned in the genex README section above are relevant to that project's source code only.