1package matchers
 2
 3import (
 4	"fmt"
 5	"regexp"
 6
 7	"github.com/onsi/gomega/format"
 8)
 9
10type MatchRegexpMatcher struct {
11	Regexp string
12	Args   []interface{}
13}
14
15func (matcher *MatchRegexpMatcher) Match(actual interface{}) (success bool, err error) {
16	actualString, ok := toString(actual)
17	if !ok {
18		return false, fmt.Errorf("RegExp matcher requires a string or stringer.\nGot:%s", format.Object(actual, 1))
19	}
20
21	match, err := regexp.Match(matcher.regexp(), []byte(actualString))
22	if err != nil {
23		return false, fmt.Errorf("RegExp match failed to compile with error:\n\t%s", err.Error())
24	}
25
26	return match, nil
27}
28
29func (matcher *MatchRegexpMatcher) FailureMessage(actual interface{}) (message string) {
30	return format.Message(actual, "to match regular expression", matcher.regexp())
31}
32
33func (matcher *MatchRegexpMatcher) NegatedFailureMessage(actual interface{}) (message string) {
34	return format.Message(actual, "not to match regular expression", matcher.regexp())
35}
36
37func (matcher *MatchRegexpMatcher) regexp() string {
38	re := matcher.Regexp
39	if len(matcher.Args) > 0 {
40		re = fmt.Sprintf(matcher.Regexp, matcher.Args...)
41	}
42	return re
43}