glob.go

Go Globbing Library.

Install

    go get github.com/gobwas/glob

Example

package main

import "github.com/gobwas/glob"

func main() {
    var g glob.Glob
    
    // create simple glob
    g = glob.MustCompile("*.github.com")
    g.Match("api.github.com") // true
    
    // create new glob with set of delimiters as ["."]
    g = glob.MustCompile("api.*.com", ".")
    g.Match("api.github.com") // true
    g.Match("api.gi.hub.com") // false
    
    // create new glob with set of delimiters as ["."]
    // but now with super wildcard
    g = glob.MustCompile("api.**.com", ".")
    g.Match("api.github.com") // true
    g.Match("api.gi.hub.com") // true
        
    // create glob with single symbol wildcard
    g = glob.MustCompile("?at")
    g.Match("cat") // true
    g.Match("fat") // true
    g.Match("at") // false
    
    // create glob with single symbol wildcard and delimiters ["f"]
    g = glob.MustCompile("?at", "f")
    g.Match("cat") // true
    g.Match("fat") // false
    g.Match("at") // false 
    
    // create glob with character-list matchers 
    g = glob.MustCompile("[abc]at")
    g.Match("cat") // true
    g.Match("bat") // true
    g.Match("fat") // false
    g.Match("at") // false
    
    // create glob with character-list matchers 
    g = glob.MustCompile("[!abc]at")
    g.Match("cat") // false
    g.Match("bat") // false
    g.Match("fat") // true
    g.Match("at") // false 
    
    // create glob with character-range matchers 
    g = glob.MustCompile("[a-c]at")
    g.Match("cat") // true
    g.Match("bat") // true
    g.Match("fat") // false
    g.Match("at") // false
    
    // create glob with character-range matchers 
    g = glob.MustCompile("[!a-c]at")
    g.Match("cat") // false
    g.Match("bat") // false
    g.Match("fat") // true
    g.Match("at") // false 
    
    
    // create glob with pattern-alternatives list 
    g = glob.MustCompile("{cat,bat,[fr]at}")
    g.Match("cat") // true
    g.Match("bat") // true
    g.Match("fat") // true
    g.Match("rat") // true
    g.Match("at") // false 
    g.Match("zat") // false 
}

Performance

This library is created for compile-once patterns. This means, that compilation could take time, but strings matching is done faster, than in case when always parsing template.

If you will not use compiled glob.Glob object, and do g := glob.MustCompile(pattern); g.Match(...) every time, then your code will be much more slower.

Run go test -bench=. from source root to see the benchmarks:

Pattern	Fixture	Match	Operations	Speed (ns/op)
[a-z][!a-x]*cat*[h][!b]*eyes*	my cat has very bright eyes	true	2000000	527
[a-z][!a-x]*cat*[h][!b]*eyes*	my dog has very bright eyes	false	10000000	229
https://*.google.*	https://account.google.com	true	10000000	121
https://*.google.*	https://google.com	false	20000000	68.6
{https://*.google.*,*yandex.*,*yahoo.*,*mail.ru}	http://yahoo.com	true	10000000	167
{https://*.google.*,*yandex.*,*yahoo.*,*mail.ru}	http://google.com	false	10000000	198
{https://*gobwas.com,http://exclude.gobwas.com}	https://safe.gobwas.com	true	100000000	23.9
{https://*gobwas.com,http://exclude.gobwas.com}	http://safe.gobwas.com	false	50000000	24.7
abc*	abcdef	true	200000000	8.86
abc*	af	false	300000000	4.99
*def	abcdef	true	200000000	9.23
*def	af	false	300000000	5.44
ab*ef	abcdef	true	100000000	15.2
ab*ef	af	false	100000000	10.4

The same things with regexp package:

Pattern	Fixture	Match	Operations	Speed (ns/op)
^[a-z][^a-x].*cat.*[h][^b].*eyes.*$	my cat has very bright eyes	true	500000	2553
^[a-z][^a-x].*cat.*[h][^b].*eyes.*$	my dog has very bright eyes	false	1000000	1383
^https:\/\/.*\.google\..*$	https://account.google.com	true	1000000	1205
^https:\/\/.*\.google\..*$	https://google.com	false	2000000	767
`^(https://..google..	.yandex..	.yahoo..	.*mail.ru)$`	http://yahoo.com
`^(https://..google..	.yandex..	.yahoo..	.*mail.ru)$`	http://google.com
`^(https://.*gobwas.com	http://exclude.gobwas.com)$`	https://safe.gobwas.com	true	1000000
`^(https://.*gobwas.com	http://exclude.gobwas.com)$`	http://safe.gobwas.com	false	5000000
^abc.*$	abcdef	true	5000000	237
^abc.*$	af	false	20000000	100
^.*def$	abcdef	true	5000000	464
^.*def$	af	false	5000000	265
^ab.*ef$	abcdef	true	5000000	375
^ab.*ef$	af	false	10000000	145

Syntax

Syntax is inspired by standard wildcards, except that ** is aka super-asterisk, that do not sensitive for separators.