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From vladimir-kotikov <...@git.apache.org>
Subject [GitHub] cordova-lib pull request: CB-9127 Implements cordova-serve module.
Date Tue, 09 Jun 2015 08:10:00 GMT
Github user vladimir-kotikov commented on a diff in the pull request:

    https://github.com/apache/cordova-lib/pull/238#discussion_r31990672
  
    --- Diff: cordova-serve/src/server.js ---
    @@ -0,0 +1,137 @@
    +/**
    + Licensed to the Apache Software Foundation (ASF) under one
    + or more contributor license agreements.  See the NOTICE file
    + distributed with this work for additional information
    + regarding copyright ownership.  The ASF licenses this file
    + to you 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.
    + */
    +
    +var fs     = require('fs'),
    +    http   = require('http'),
    +    url    = require('url'),
    +    path   = require('path'),
    +    Q      = require('q'),
    +    stream = require('./stream');
    +
    +/**
    + * @desc Launches a server with the specified options and optional custom handlers.
    + * @param {{root: ?string, port: ?number, urlPathProcessor: ?function, streamHandler:
?function, serverExtender: ?function}} opts
    + * @returns {*|promise}
    + */
    +module.exports = function (opts) {
    +    var deferred = Q.defer();
    +
    +    var root = opts.root;
    +    var port = opts.port || 8000;
    +
    +    var server = http.createServer(function (request, response) {
    +        function do404() {
    +            console.log('404 ' + request.url);
    +            response.writeHead(404, {'Content-Type': 'text/plain'});
    +            response.write('404 Not Found\n');
    +            response.end();
    +        }
    +
    +        function do302(where) {
    +            console.log('302 ' + request.url);
    +            response.setHeader('Location', where);
    +            response.writeHead(302, {'Content-Type': 'text/plain'});
    +            response.end();
    +        }
    +
    +        function do304() {
    +            console.log('304 ' + request.url);
    +            response.writeHead(304, {'Content-Type': 'text/plain'});
    +            response.end();
    +        }
    +
    +        function isFileChanged(path) {
    +            var mtime = fs.statSync(path).mtime,
    +                itime = request.headers['if-modified-since'];
    +            return !itime || new Date(mtime) > new Date(itime);
    +        }
    +
    +        var urlPath = url.parse(request.url).pathname;
    +
    +        var filePath;
    +        if (opts.urlPathProcessor) {
    +            var result = opts.urlPathProcessor(urlPath, request, response, do302, do404);
    +            if (!result) {
    +                return;
    +            }
    +            filePath = result.filePath;
    +        }
    +        if (!filePath) {
    +            if (!root) {
    +                throw new Error('No server root directory HAS BEEN specified!');
    +            }
    +            filePath = path.join(root, urlPath);
    +        }
    +
    +        fs.exists(filePath, function (exists) {
    +            if (!exists) {
    +                do404();
    +                return;
    +            }
    +            if (fs.statSync(filePath).isDirectory()) {
    +                var index = path.join(filePath, 'index.html');
    +                try {
    +                    if (fs.statSync(index)) {
    +                        filePath = index;
    +                    }
    +                } catch (e) {
    +                }
    +            }
    +            if (fs.statSync(filePath).isDirectory()) {
    +                if (!/\/$/.test(urlPath)) {
    +                    do302(request.url + '/');
    +                    return;
    +                }
    +                console.log('200 ' + request.url);
    +                response.writeHead(200, {'Content-Type': 'text/html'});
    +                response.write('<html><head><title>Directory listing
of ' + urlPath + '</title></head>');
    +                response.write('<h3>Items in this directory</h3>');
    +                response.write('<ul>');
    +                fs.readdirSync(filePath).forEach(function (file) {
    +                    if (file) {
    +                        response.write('<li><a href="' + file + '">' + file
+ '</a></li>\n');
    +                    }
    +                });
    +
    +                response.write('</ul>');
    +                response.end();
    +            } else if (!isFileChanged(filePath)) {
    +                do304();
    +            } else {
    +                (opts.streamHandler && opts.streamHandler(filePath, request,
response)) || stream(filePath, request, response);
    --- End diff --
    
    nit: This is more readable and do not require `-W030` for JSHint:
    ```
    var streamHandler = opts.streamHandler || stream;
    streamHandler(...params...)
    ```


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