70 lines
1.8 KiB
Go
70 lines
1.8 KiB
Go
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// Copyright 2011 Aaron Jacobs. All Rights Reserved.
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// Author: aaronjjacobs@gmail.com (Aaron Jacobs)
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package oglematchers
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import (
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"errors"
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"fmt"
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"reflect"
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"regexp"
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)
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// MatchesRegexp returns a matcher that matches strings and byte slices whose
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// contents match the supplied regular expression. The semantics are those of
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// regexp.Match. In particular, that means the match is not implicitly anchored
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// to the ends of the string: MatchesRegexp("bar") will match "foo bar baz".
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func MatchesRegexp(pattern string) Matcher {
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re, err := regexp.Compile(pattern)
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if err != nil {
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panic("MatchesRegexp: " + err.Error())
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}
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return &matchesRegexpMatcher{re}
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}
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type matchesRegexpMatcher struct {
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re *regexp.Regexp
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}
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func (m *matchesRegexpMatcher) Description() string {
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return fmt.Sprintf("matches regexp \"%s\"", m.re.String())
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}
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func (m *matchesRegexpMatcher) Matches(c interface{}) (err error) {
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v := reflect.ValueOf(c)
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isString := v.Kind() == reflect.String
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isByteSlice := v.Kind() == reflect.Slice && v.Elem().Kind() == reflect.Uint8
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err = errors.New("")
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switch {
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case isString:
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if m.re.MatchString(v.String()) {
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err = nil
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}
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case isByteSlice:
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if m.re.Match(v.Bytes()) {
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err = nil
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}
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default:
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err = NewFatalError("which is not a string or []byte")
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}
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return
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}
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