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dev-tool.js
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163 lines (126 loc) · 5.43 KB
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var DOCUMENT_ROOT, STATIC_ROOT, REWRITE_FILE;
var express = require('express');
var router = express.Router();
var path = require('path'), fs = require('fs');
var exists = fs.existsSync || path.existsSync;
function isFile(path){
return exists(path) && fs.statSync(path).isFile();
}
function getRefs(id, map){
var refs = [];
(map[id].refs || []).forEach(function(ref){
refs.push(ref);
refs.unshift.apply(refs, getRefs(ref, map));
});
return refs;
}
function html5addMeta(content, isHtml5){
if(isHtml5 && content.indexOf('<meta name="viewport"') == -1){
content = '<meta name="viewport" content="initial-scale=1, maximum-scale= 1, minimum-scale=1, user-scalable=no">' + content;
}
return content;
}
module.exports = function(root, static_root){
DOCUMENT_ROOT = root;
STATIC_ROOT = static_root;
REWRITE_FILE = path.join(DOCUMENT_ROOT, 'conf/rewrite.js');
ENGINE_FILE = path.join(DOCUMENT_ROOT, 'conf/engine.json');
router.use(function(req, res, next){
var ENGINE_CONFIG = JSON.parse(fs.readFileSync(ENGINE_FILE));
var mustacheExpress = require('mustache-express');
// Register '.mustache' extension with The Mustache Express
app.engine(ENGINE_CONFIG.suffix, mustacheExpress());
app.set('view engine', ENGINE_CONFIG.suffix);
app.set('views', DOCUMENT_ROOT);
if(ENGINE_CONFIG.combo && req.originalUrl.indexOf(ENGINE_CONFIG.combo.syntax[0]) == 1){
var combos = req.originalUrl.split(ENGINE_CONFIG.combo.syntax[0]);
if(combos.length > 1){
//handle combo
combos = combos[1].split(ENGINE_CONFIG.combo.syntax[1]);
var content = '';
for(var i = 0, j = combos.length; i < j; i++){
var file = path.join(STATIC_ROOT, combos[i]);
if(!isFile(file)){
res.status(404).end();
return;
}else{
content += fs.readFileSync(file).toString() + '\n';
}
}
res.writeHead(200, {'Content-Type': /(?:css|less|sass)(?:\?|$)/.test(combos[0]) ? 'text/css' : 'text/javascript'});
res.end(content);
return;
}
}
var rewrites, url = req.path || '/', file;
try{
//强制清除加载的文件，重新加载
delete require.cache[REWRITE_FILE];
rewrites = require(REWRITE_FILE);
}catch(e){}
try{
if(rewrites){
for(var key in rewrites){
if((new RegExp(key, 'i')).test(req.originalUrl)){
url = rewrites[key];
if(typeof url == 'function'){
url(req, res, next);
return;
}
break;
}
}
}
file = path.join(DOCUMENT_ROOT, url);
var suffix = '.' + ENGINE_CONFIG.suffix;
if(isFile(file) && file.slice(-suffix.length) != suffix){
res.sendFile(file, function(){
next();
});
return;
}
file = file.replace(suffix, '') + suffix;
if(!isFile(file) && url == '/'){
file = path.join(DOCUMENT_ROOT, 'index' + suffix);
}
if(isFile(file)){
var bContent = '', mapJson = JSON.parse(fs.readFileSync(path.join(DOCUMENT_ROOT, 'map.json')));
if(/pagelet[\/\\]/.test(file) && 'debug' in req.query){
bContent = '<script src="' + mapJson['static/feather.js'].url + '"></script>';
}
if(ENGINE_CONFIG.mustache){
var id = path.relative(DOCUMENT_ROOT, file).replace(/\\+/g, '/');
var refs = ['_global_' + suffix].concat(getRefs(id, mapJson)), datas = {};
refs.push(id.replace(suffix, '.json'));
for(var i = 0; i < refs.length; i++){
var dataFile = path.join(DOCUMENT_ROOT, 'data', refs[i].replace(suffix, '.json'));
if(isFile(dataFile)){
try{
var c = (fs.readFileSync(dataFile) || '').toString().trim();
if(c){
var data = JSON.parse(c) || {};
for(var key in data){
datas[key] = data[key];
}
}
}catch(e){
return res.status(500).send(dataFile + ' is not a valid json file!')
}
}
}
res.render(file, datas, function(err, html){
res.send(bContent + html5addMeta(html, 'h5debug' in req.query));
});
}else{
var content = fs.readFileSync(file).toString();
res.send(bContent + html5addMeta(content, 'h5debug' in req.query));
}
return;
}
}catch(e){
res.status(500).send(e.message);
}
next();
});
return router;
};