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Programming language: Go
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README
genex 
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.