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			59 lines
		
	
	
		
			1.7 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			59 lines
		
	
	
		
			1.7 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
| // Copyright 2015 Light Code Labs, LLC
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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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| 
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| // Package extensions contains middleware for clean URLs.
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| //
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| // The root path of the site is passed in as well as possible extensions
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| // to try internally for paths requested that don't match an existing
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| // resource. The first path+ext combination that matches a valid file
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| // will be used.
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| package extensions
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| 
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| import (
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| 	"net/http"
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| 	"os"
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| 	"path"
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| 	"strings"
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| 
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| 	"github.com/mholt/caddy/caddyhttp/httpserver"
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| )
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| 
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| // Ext can assume an extension from clean URLs.
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| // It tries extensions in the order listed in Extensions.
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| type Ext struct {
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| 	// Next handler in the chain
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| 	Next httpserver.Handler
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| 
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| 	// Path to site root
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| 	Root string
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| 
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| 	// List of extensions to try
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| 	Extensions []string
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| }
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| 
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| // ServeHTTP implements the httpserver.Handler interface.
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| func (e Ext) ServeHTTP(w http.ResponseWriter, r *http.Request) (int, error) {
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| 	urlpath := strings.TrimSuffix(r.URL.Path, "/")
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| 	if len(r.URL.Path) > 0 && path.Ext(urlpath) == "" && r.URL.Path[len(r.URL.Path)-1] != '/' {
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| 		for _, ext := range e.Extensions {
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| 			_, err := os.Stat(httpserver.SafePath(e.Root, urlpath) + ext)
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| 			if err == nil {
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| 				r.URL.Path = urlpath + ext
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| 				break
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| 			}
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| 		}
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| 	}
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| 	return e.Next.ServeHTTP(w, r)
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| }
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