whatcanGOwrong

go/pkg/mod/mvdan.cc/xurls/v2@v2.5.0/README.md

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+# xurls
+
+[![Go Reference](https://pkg.go.dev/badge/mvdan.cc/xurls/v2.svg)](https://pkg.go.dev/mvdan.cc/xurls/v2)
+
+Extract urls from text using regular expressions. Requires Go 1.19 or later.
+
+```go
+import "mvdan.cc/xurls/v2"
+
+func main() {
+	rxRelaxed := xurls.Relaxed()
+	rxRelaxed.FindString("Do gophers live in golang.org?")  // "golang.org"
+	rxRelaxed.FindString("This string does not have a URL") // ""
+
+	rxStrict := xurls.Strict()
+	rxStrict.FindAllString("must have scheme: http://foo.com/.", -1) // []string{"http://foo.com/"}
+	rxStrict.FindAllString("no scheme, no match: foo.com", -1)       // []string{}
+}
+```
+
+Since API is centered around [regexp.Regexp](https://golang.org/pkg/regexp/#Regexp),
+many other methods are available, such as finding the [byte indexes](https://golang.org/pkg/regexp/#Regexp.FindAllIndex)
+for all matches.
+
+The regular expressions are compiled when the API is first called.
+Any subsequent calls will use the same regular expression pointers.
+
+#### cmd/xurls
+
+To install the tool globally:
+
+	go install mvdan.cc/xurls/v2/cmd/xurls@latest
+
+```shell
+$ echo "Do gophers live in http://golang.org?" | xurls
+http://golang.org
+```