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148 lines
No EOL
5.1 KiB
Markdown
148 lines
No EOL
5.1 KiB
Markdown
# glob.[go](https://golang.org)
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[![GoDoc][godoc-image]][godoc-url] [![Build Status][travis-image]][travis-url]
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> Go Globbing Library.
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## Install
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```shell
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go get github.com/gobwas/glob
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```
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## Example
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```go
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package main
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import "github.com/gobwas/glob"
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func main() {
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var g glob.Glob
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// create simple glob
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g = glob.MustCompile("*.github.com")
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g.Match("api.github.com") // true
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// quote meta characters and then create simple glob
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g = glob.MustCompile(glob.QuoteMeta("*.github.com"))
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g.Match("*.github.com") // true
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// create new glob with set of delimiters as ["."]
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g = glob.MustCompile("api.*.com", '.')
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g.Match("api.github.com") // true
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g.Match("api.gi.hub.com") // false
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// create new glob with set of delimiters as ["."]
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// but now with super wildcard
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g = glob.MustCompile("api.**.com", '.')
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g.Match("api.github.com") // true
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g.Match("api.gi.hub.com") // true
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// create glob with single symbol wildcard
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g = glob.MustCompile("?at")
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g.Match("cat") // true
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g.Match("fat") // true
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g.Match("at") // false
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// create glob with single symbol wildcard and delimiters ['f']
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g = glob.MustCompile("?at", 'f')
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g.Match("cat") // true
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g.Match("fat") // false
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g.Match("at") // false
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// create glob with character-list matchers
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g = glob.MustCompile("[abc]at")
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g.Match("cat") // true
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g.Match("bat") // true
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g.Match("fat") // false
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g.Match("at") // false
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// create glob with character-list matchers
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g = glob.MustCompile("[!abc]at")
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g.Match("cat") // false
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g.Match("bat") // false
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g.Match("fat") // true
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g.Match("at") // false
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// create glob with character-range matchers
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g = glob.MustCompile("[a-c]at")
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g.Match("cat") // true
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g.Match("bat") // true
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g.Match("fat") // false
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g.Match("at") // false
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// create glob with character-range matchers
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g = glob.MustCompile("[!a-c]at")
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g.Match("cat") // false
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g.Match("bat") // false
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g.Match("fat") // true
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g.Match("at") // false
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// create glob with pattern-alternatives list
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g = glob.MustCompile("{cat,bat,[fr]at}")
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g.Match("cat") // true
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g.Match("bat") // true
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g.Match("fat") // true
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g.Match("rat") // true
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g.Match("at") // false
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g.Match("zat") // false
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}
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```
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## Performance
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This library is created for compile-once patterns. This means, that compilation could take time, but
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strings matching is done faster, than in case when always parsing template.
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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.
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Run `go test -bench=.` from source root to see the benchmarks:
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Pattern | Fixture | Match | Speed (ns/op)
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--------|---------|-------|--------------
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`[a-z][!a-x]*cat*[h][!b]*eyes*` | `my cat has very bright eyes` | `true` | 432
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`[a-z][!a-x]*cat*[h][!b]*eyes*` | `my dog has very bright eyes` | `false` | 199
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`https://*.google.*` | `https://account.google.com` | `true` | 96
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`https://*.google.*` | `https://google.com` | `false` | 66
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`{https://*.google.*,*yandex.*,*yahoo.*,*mail.ru}` | `http://yahoo.com` | `true` | 163
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`{https://*.google.*,*yandex.*,*yahoo.*,*mail.ru}` | `http://google.com` | `false` | 197
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`{https://*gobwas.com,http://exclude.gobwas.com}` | `https://safe.gobwas.com` | `true` | 22
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`{https://*gobwas.com,http://exclude.gobwas.com}` | `http://safe.gobwas.com` | `false` | 24
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`abc*` | `abcdef` | `true` | 8.15
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`abc*` | `af` | `false` | 5.68
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`*def` | `abcdef` | `true` | 8.84
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`*def` | `af` | `false` | 5.74
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`ab*ef` | `abcdef` | `true` | 15.2
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`ab*ef` | `af` | `false` | 10.4
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The same things with `regexp` package:
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Pattern | Fixture | Match | Speed (ns/op)
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--------|---------|-------|--------------
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`^[a-z][^a-x].*cat.*[h][^b].*eyes.*$` | `my cat has very bright eyes` | `true` | 2553
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`^[a-z][^a-x].*cat.*[h][^b].*eyes.*$` | `my dog has very bright eyes` | `false` | 1383
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`^https:\/\/.*\.google\..*$` | `https://account.google.com` | `true` | 1205
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`^https:\/\/.*\.google\..*$` | `https://google.com` | `false` | 767
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`^(https:\/\/.*\.google\..*|.*yandex\..*|.*yahoo\..*|.*mail\.ru)$` | `http://yahoo.com` | `true` | 1435
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`^(https:\/\/.*\.google\..*|.*yandex\..*|.*yahoo\..*|.*mail\.ru)$` | `http://google.com` | `false` | 1674
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`^(https:\/\/.*gobwas\.com|http://exclude.gobwas.com)$` | `https://safe.gobwas.com` | `true` | 1039
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`^(https:\/\/.*gobwas\.com|http://exclude.gobwas.com)$` | `http://safe.gobwas.com` | `false` | 272
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`^abc.*$` | `abcdef` | `true` | 237
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`^abc.*$` | `af` | `false` | 100
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`^.*def$` | `abcdef` | `true` | 464
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`^.*def$` | `af` | `false` | 265
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`^ab.*ef$` | `abcdef` | `true` | 375
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`^ab.*ef$` | `af` | `false` | 145
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[godoc-image]: https://godoc.org/github.com/gobwas/glob?status.svg
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[godoc-url]: https://godoc.org/github.com/gobwas/glob
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[travis-image]: https://travis-ci.org/gobwas/glob.svg?branch=master
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[travis-url]: https://travis-ci.org/gobwas/glob
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## Syntax
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Syntax is inspired by [standard wildcards](http://tldp.org/LDP/GNU-Linux-Tools-Summary/html/x11655.htm),
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except that `**` is aka super-asterisk, that do not sensitive for separators. |