package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`url\s*\(\s*[\'"]?(?!(((?:https?:)?\/\/)|(?:data\:?:)))([^\'"\)]+)[\'"]?\s*\)`)
var str = `#TEST {
background:url(test.jpg);
background:url( 'test.jpg' );
background:url("test.jpg" );
background:url(http://example.com/test.jpg);
background:url('https://example.com/test.jpg');
background:url("http://example.com/test.jpg");
background:url( '//example.com/test.jpg' );
background:url( "//example.com/test.jpg" );
background:url(//example.com/test.jpg);
}`
var substitution = "url("/themes/default/css/$3")"
fmt.Println(re.ReplaceAllString(str, substitution))
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Golang, please visit: https://golang.org/pkg/regexp/