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mirror of https://github.com/webx-top/echo synced 2021-12-20 05:52:35 +00:00
echo/middleware.go
Wenhui Shen 2512e56640 update
2018-04-07 17:59:42 +08:00

52 lines
1.3 KiB
Go

/*
Copyright 2016 Wenhui Shen <www.webx.top>
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package echo
import (
"regexp"
"strconv"
"strings"
)
type (
// Skipper defines a function to skip middleware. Returning true skips processing
// the middleware.
Skipper func(c Context) bool
)
func CaptureTokens(pattern *regexp.Regexp, input string) *strings.Replacer {
groups := pattern.FindAllStringSubmatch(input, -1)
if groups == nil {
return nil
}
values := groups[0][1:]
replace := make([]string, 2*len(values))
for i, v := range values {
j := 2 * i
replace[j] = "$" + strconv.Itoa(i+1)
replace[j+1] = v
}
return strings.NewReplacer(replace...)
}
// DefaultSkipper returns false which processes the middleware.
func DefaultSkipper(c Context) bool {
return false
}