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trailing_slash.go
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/
trailing_slash.go
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// Copyright 2018 xgfone
//
// 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 middleware
import (
"strings"
"github.com/xgfone/ship/v2"
)
// RemoveTrailingSlash returns a new middleware to remove the trailing slash
// in the request path if it exists.
//
// Notice: it should be used as the pre-middleware by ship#Pre().
func RemoveTrailingSlash() Middleware {
return func(next ship.Handler) ship.Handler {
return func(ctx *ship.Context) (err error) {
req := ctx.Request()
path := req.URL.Path
if path != "" && path != "/" && path[len(path)-1] == '/' {
path = strings.TrimRight(path, "/")
if path == "" {
req.URL.Path = "/"
} else {
req.URL.Path = path
}
}
return next(ctx)
}
}
}