node-ursa
Version:
A front end development workbench with server/https/template engine/optimization tools support
242 lines (223 loc) • 8.74 kB
JavaScript
/**
* handler.js
*
* changelog
* 2013/11/03:replace request to connect's,response reserved.
*
* @author yinyong#sogou-inc.com
* @version 0.0.2
*/
var fs = require("fs"),
mime = require('mime'),
sysPath = require('path'),
sysUrl= require('url'),
config = require('./config'),
utils = require('./utils'),
util = require('util'),
filter = require('./filter'),
Render = require('./tool/render'),
plugin = require('./tool/plugin'),
Stamp = require('./tool/timestamp'),
less = require('./tool/less'),
logger = require("./tool/logger");
module.exports = {
/**
* 显示模板列表
* @param {Request] req [description]
* @param {Response} res [description]
* @see ./http/Response
*/
index: function(req, res) {
var htmlFiles = config.get('require_html_modules');
if (!util.isArray(htmlFiles)) {
logger.logError("require_html_modules MUST BE an array,but it is a %s".error, typeof htmlFiles);
htmlFiles = [];
utils.walkSync(config.templateDir, htmlFiles, /\.tpl$/i);
htmlFiles.forEach(function(tpl, index) {
htmlFiles[index] = sysPath.relative(config.templateDir, tpl);
});
}
//遍历构建模板的完整路径
htmlFiles.forEach(function(file, index) {
//file可能带.tpl后缀也可能不带
var realPath = sysPath.join(config.templateDir, file + (/\.tpl$/i.test(file) ? "" : ".tpl"));
if (!fs.existsSync(realPath)) {
logger.logWarn("%s does not exist".warn, realPath);
htmlFiles.splice(index, 1);
} else {
htmlFiles[index] = file;
}
});
//不使用模板达到夸模板引擎的目的
var tplHtmlStr = "";
htmlFiles.forEach(function(tpl, index) {
tplHtmlStr += '<li><a class="title" href="{{tpl}}.ut">{{tpl}}</a><a class="mgr" href="{{tpl}}.m">mgr</a></li>'.replace(/\{\{tpl\}\}/g, tpl.replace(/\.tpl$/i, "")); //可能需要去掉.tpl后缀
});
fs.readFile(sysPath.join(__dirname, "../template/index.tpl"), 'utf-8', function(err, content) {
if (err) {
return res.send(500, String(err));
}
content = content.replace('__TPL_HTML_STR__', tplHtmlStr);
return res.send(content);
});
},
/**
* 处理后缀ut的请求，输出模板。
* @param {Request} req
* @param {Response} res
* @see ./http/Response
*/
tpl: function(req, res) {
var startTime = Date.now();
var pathname =sysUrl.parse(req.url).pathname || "";
pathname = pathname.replace(/\.ut$/i, '');
var render = new Render(config.templateDir);
return render.render(pathname, {
//AOP
}, function(err, content) {
if (err) {
logger.logError("%s".error, err);
return res.send(500, String(err));
}
content = filter(content);
//服务器输出时间戳
if (config.get("server_add_timestamp")) {
var stamp = new Stamp(".");
content = stamp.addToHtmlLink(content);
content = stamp.addToHtmlScript(content);
content = stamp.addToCssUrl(content, ".");
}
content = plugin.compilePlugins(pathname, content);
res.send(content);
logger.logInfo("200 %s %dbytes %dms".info, pathname, content.length, new Date - startTime);
});
},
/**
* 输出模板数据，以供修改.
* @param {Request} req [description]
* @param {Response} res [description]
* @see ./http/Response
*/
m: function(req, res) {
var pathname =sysUrl.parse(req.url).pathname || "";
//This template is not the app's but the node-ursa's.
var render = new Render(sysPath.join(__dirname, "../", config.templateDir));
//要输出的json
var dataFile = sysPath.join(config.dataDir, pathname.replace(/\.m$/i, '.json'));
return fs.readFile(dataFile, function(err, json) {
json = json || "";
fs.readFile(sysPath.join(__dirname, "../template/mgr.tpl"), "utf-8", function(err, content) {
if (err) {
return res.send(500, String(err));
}
var data = {
name: pathname.replace(/\.m$/i, ''),
data: json,
tpl: sysPath.join(".", pathname.replace(/\.m$/i, '.json'))
};
content = content.replace(/\{\{(name|data|tpl)\}\}/g, function(k) {
return data[RegExp.$1];
});
return res.send(content);
});
});
},
/**
* 保存提交来的json数据。
* @param {Request} req [description]
* @param {Response} res [description]
* @see ./http/Response
*/
data_so: function(req, res) {
if (req.method !== 'POST') {
return res.send(405, "GET is not supported");
}
var tpl = req.body.tpl;
var data = req.body.data;
if (!tpl || !data) {
logger.logError("has tpl:%s;has data:%s".error, !! tpl, !! data);
return res.send("Lack of parameters!");
}
//校验格式
try {
JSON.parse(utils.rmComment(data))
} catch (e) {
return res.send("<pre>" + data + "</pre> JSON failure");
};
//写入文件
return fs.writeFile(sysPath.join(config.dataDir, tpl), data, function(err) {
if (err) {
logger.logError("%s".error, err);
return res.send("Save failed");
} else {
return res.redirect('/');
}
});
},
/**
* 静态资源
* @param {Request} req [description]
* @param {Response} res [description]
*/
_static: function(req, res) {
//var startTime = Date.now();
var pathname = sysUrl.parse(req.url).pathname;
var file = sysPath.join(".", pathname);
return fs.exists(file, function(exists) {
if (exists) {
var contentType = mime.lookup(file);
//Read file
return fs.readFile(file, function(err, content) {
if (err) {
logger.logError("%s".error, err);
return res.send(500, file + " read failed:" + String(err));
} else {
try {
//期望文本文件内存在替换变量
if (/text|javascript/ig.test(contentType)) {
content = content.toString(); //Buffer转String，不影响String自转。
content = filter(content, null);
//服务器模式输出时间戳
if (config.get("server_add_timestamp") && /css|less|styl/i.test(contentType)) {
var stamp = new Stamp(".");
content = stamp.addToCssUrl(content, sysPath.dirname(file));
}
}
res.send({
'content-type': contentType,
'content-length': content.length
}, content);
// logger.logInfo("200 %s %dbytes %dms".info, pathname, content.length, Date.now() - startTime);
} catch (e) {
logger.logError("%s".error, e);
res.send(500, String(e));
}
return;
}
});
} else {
return res.send(404, file + ' not found!')
}
});
},
/**
* 处理其它请求，如图片、脚本、样式表
* @param {Request} req
* @param {Response} res
* @see ./http/Response
*/
none: function(req, res) {
var pathname = sysUrl.parse(req.url).pathname || "";
var file = sysPath.join(".", pathname);
var self=this;
if (/\.css$/i.test(file)) {
less.compile(file, function(err) {
if (err)
logger.logError("%s".error, err)
self._static(req,res);
});
} else {
self._static(req,res);
}
}
};