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38 lines
1.1 KiB
Markdown
38 lines
1.1 KiB
Markdown
# xurls
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[](https://godoc.org/mvdan.cc/xurls)
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Extract urls from text using regular expressions. Requires Go 1.13 or later.
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```go
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import "mvdan.cc/xurls/v2"
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func main() {
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rxRelaxed := xurls.Relaxed()
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rxRelaxed.FindString("Do gophers live in golang.org?") // "golang.org"
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rxRelaxed.FindString("This string does not have a URL") // ""
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rxStrict := xurls.Strict()
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rxStrict.FindAllString("must have scheme: http://foo.com/.", -1) // []string{"http://foo.com/"}
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rxStrict.FindAllString("no scheme, no match: foo.com", -1) // []string{}
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}
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```
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Since API is centered around [regexp.Regexp](https://golang.org/pkg/regexp/#Regexp),
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many other methods are available, such as finding the [byte indexes](https://golang.org/pkg/regexp/#Regexp.FindAllIndex)
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for all matches.
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Note that calling the exposed functions means compiling a regular expression, so
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repeated calls should be avoided.
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#### cmd/xurls
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To install the tool globally:
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cd $(mktemp -d); go mod init tmp; GO111MODULE=on go get mvdan.cc/xurls/v2/cmd/xurls
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```shell
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$ echo "Do gophers live in http://golang.org?" | xurls
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http://golang.org
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```
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