89 lines
3.0 KiB
JavaScript
89 lines
3.0 KiB
JavaScript
/**
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* connect-slashes
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* Trailing slash redirect middleware for Connect
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* https://github.com/avinoamr/connect-slashes
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*
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* The MIT License
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*
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* Copyright (c) 2010-2012 Roi Avinoam <avinoamr@gmail.com> and connect-slashes authors.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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*/
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// Only create RegExp objects once
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var reQuery = /[\?\&]+/;
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var reDoubleSlashes = /(\/\/+)/;
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var slashes = function( append, options ) {
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options = options || {};
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( append === false ) || ( append = true ); // default to append slashes mode
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return function slashes( req, res, next ) {
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if ( "GET" == req.method || "HEAD" == req.method || "OPTIONS" == req.method ) {
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// Use originalUrl when defined ( for express compatibility);
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var url = (req.originalUrl || req.url).split( reQuery )
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, location = url[ 0 ]
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, redirect
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, headers;
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if ( append && "/" != location[ location.length - 1 ] ) {
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// append slashes
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redirect = location + "/";
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} else if ( !append && "/" == location[ location.length - 1 ] && "/" != location ) {
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// remove slashes
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redirect = location.slice( 0, location.length - 1 );
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}
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// complete the redirect url
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if ( redirect ) {
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if ( url.length > 1 ) {
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redirect += "?" + url.slice( 1 ).join( "&" );
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}
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redirect = ( options.base || "" ) + redirect; // prepend the base path
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redirect = redirect.replace( reDoubleSlashes, "/" ); // see issue #2
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if ( "/" != redirect[ 0 ] ) {
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redirect = "/" + redirect; // guarantee absolute redirect
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}
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headers = options.headers || {};
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headers[ "Location" ] = redirect;
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res.writeHead( options.code || 301, headers );
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res.end();
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return;
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}
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}
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next();
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};
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};
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//
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module.exports = slashes;
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