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cabinjs-admin.js
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cabinjs-admin.js
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var fs = require('fs');
var http = require('http');
var path = require('path');
/*
* hanson.js - Parser library for HanSON
*
* Public Domain. Use, modify and distribute it any way you like. No attribution required.
* NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
* For details, see LICENSE or http://unlicense.org/
*
* NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
*
* HanSON is JSON with comments, multiline strings and unquoted object property names.
* - Comments use JavaScript syntax
* - Multi-line strings use ES6's template quote syntax: ``.
* - Object property names do not require quotes if they are valid JavaScript identifiers.
* - Every JSON string is valid HanSON.
* - HanSON can easily converted to real JSON.
*
*
* hanson.js provides you with a HanSON object that has parse() and stringify() methods which
* work like JSON's. Yu can use it as a CommonJS package dependency in Node.js:
*
* var HanSON = require('hanson');
*
* If you invoke hanson.js and 'module' is not defined, it will write its reference into this.HanSON.
*
* Parsing a HanSON string is as easy as parsing a JSON string:
* var obj = HanSON.parse(jsonSrc);
*
* Writing HanSON is also possible:
* var h = HanSON.stringify(obj);
*
* Note that the current implementation of stringify() will write a JSON string without using any HanSON features.
* This may change in future implementations.
*
* https://github.com/timjansen/hanson
*/
function extractLineFeeds(s) {
return s.replace(/[^\n]+/g, '');
}
// input is the HanSON string to convert.
// if keepLineNumbers is set, toJSON() tried not to modify line numbers, so a JSON parser's
// line numbers in error messages will still make sense.
function toJSON(input, keepLineNumbers) {
var UNESCAPE_MAP = { '\\"': '"', "\\`": "`", "\\'": "'" };
var ML_ESCAPE_MAP = {'\n': '\\n', "\r": '\\r', "\t": '\\t', '"': '\\"'};
function unescapeQuotes(r) { return UNESCAPE_MAP[r] || r; }
return input.replace(/`(?:\\.|[^`])*`|'(?:\\.|[^'])*'|"(?:\\.|[^"])*"|\/\*[^]*?\*\/|\/\/.*\n?/g, // pass 1: remove comments
function(s) {
if (s.charAt(0) == '/')
return keepLineNumbers ? extractLineFeeds(s) : '';
else
return s;
})
.replace(/(?:true|false|null)(?=[^\w_$]|$)|([a-zA-Z_$][\w_$]*)|`((?:\\.|[^`])*)`|'((?:\\.|[^'])*)'|"(?:\\.|[^"])*"|(,)(?=\s*[}\]])/g, // pass 2: requote
function(s, identifier, multilineQuote, singleQuote, lonelyComma) {
if (lonelyComma)
return '';
else if (identifier != null)
return '"' + identifier + '"';
else if (multilineQuote != null)
return '"' + multilineQuote.replace(/\\./g, unescapeQuotes).replace(/[\n\r\t"]/g, function(r) { return ML_ESCAPE_MAP[r]; }) +
'"' + (keepLineNumbers ? extractLineFeeds(multilineQuote) : '');
else if (singleQuote != null)
return '"' + singleQuote.replace(/\\./g, unescapeQuotes).replace(/"/g, '\\"') + '"';
else
return s;
});
}
var hanson = {
toJSON: toJSON,
parse: function(input) {
return JSON.parse(toJSON(input, true));
},
stringify: function(obj) {
return JSON.stringify(obj);
}
};
// http://grammerjack.blogspot.com.es/2010/12/asynchronous-directory-tree-walk-in.html
// asynchronous tree walk
// root - root path
// fileCb - callback function (file, next) called for each file
// -- the callback must call next(falsey) to continue the iteration,
// or next(truthy) to abort the iteration.
// doneCb - callback function (err) called when iteration is finished
// or an error occurs.
//
// example:
//
// forAllFiles('~/',
// function (file, next) { sys.log(file); next(); },
// function (err) { sys.log("done: " + err); });
function forAllFiles(root, fileCb, doneCb) {
fs.readdir(root, function processDir(err, files) {
if (err) {
fileCb(err);
} else {
if (files.length > 0) {
var file = root + '/' + files.shift();
fs.stat(file, function processStat(err, stat) {
if (err) {
doneCb(err);
} else {
if (stat.isFile()) {
fileCb(file, function(err) {
if (err) {
doneCb(err);
} else {
processDir(false, files);
}
});
} else {
forAllFiles(file, fileCb, function(err) {
if (err) {
doneCb(err);
} else {
processDir(false, files);
}
});
}
}
});
} else {
doneCb(false);
}
}
});
}
/*
connect query variable helper
*/
function getQueryVariable(query, variable) {
var vars = query.split('&');
for (var i = 0; i < vars.length; i++) {
var pair = vars[i].split('=');
if (decodeURIComponent(pair[0]) == variable) {
return decodeURIComponent(pair[1]);
}
}
console.log('Query variable %s not found', variable);
}
/*
Parses markdown post and returns an object with
all found properties defined in the post's head
*/
function getPostMeta( file, content, baseFile )
{
var curlyNest = 1;
var currentIndex = content.indexOf('{')+1;
while (curlyNest !== 0 && content.substr(currentIndex).length > 0) {
if (content.substr(currentIndex).indexOf('}') === -1 &&
content.substr(currentIndex).indexOf('{') === -1) {
return false;
}
if (content.substr(currentIndex).indexOf('}') !== -1) {
if (content.substr(currentIndex).indexOf('{') !== -1) {
if (content.substr(currentIndex).indexOf('}') < content.substr(currentIndex).indexOf('{')) {
currentIndex += content.substr(currentIndex).indexOf('}') + 1;
curlyNest--;
} else {
currentIndex += content.substr(currentIndex).indexOf('{') + 1;
curlyNest++;
}
} else {
currentIndex += content.substr(currentIndex).indexOf('}') + 1;
curlyNest--;
}
} else {
currentIndex += content.substr(currentIndex).indexOf('{') + 1;
curlyNest++;
}
}
var metadata = hanson.parse( content.substr( 0,currentIndex ) );
var content = content.substr( currentIndex+1 );
metadata['file'] = file;
metadata['published'] = baseFile[0]!="_";
return metadata;
}
// retuns a recursively dir tree object
function dirTree( filename , replace ) {
replace = replace || "";
var stats = fs.lstatSync(filename),
info = {
path: filename.replace( replace,''),
name: path.basename(filename)
};
if (stats.isDirectory()) {
info.type = "folder";
info.children = fs.readdirSync(filename)
.filter(function(child){ return child!='.DS_Store'})
.map(function(child) { return dirTree(filename + '/' + child, replace );
});
} else {
// Assuming it's a file. In real life it could be a symlink or
// something else!
info.type = "file";
info.ext = path.extname(info.name.toLowerCase());
}
return info;
}
/*
Downloads an online resource and tries to determine the mimetype.
*/
var download = function(url, dest, res ) {
var request = http.get(url, function(response) {
var ext =".jpg"; // default to jpeg
switch( response.headers['content-type'] )
{
case "image/jpeg":
ext = ".jpg";
break;
case "image/png":
ext = ".png";
break;
case "image/gif":
ext = ".gif";
break;
}
dest = dest + ext;
var file = fs.createWriteStream(dest);
file.on('finish', function() {
file['close'](function(){
res.setHeader('Content-Type', 'application/json');
res.end(JSON.stringify({downloadedImage: dest.substr(5) }));
}); // close() is async, call cb after close completes.
});
response.pipe(file);
}).on('error', function(err) { // Handle errors
res.setHeader('Content-Type', 'application/json');
res.end(JSON.stringify( {error:'Something went wrong'} ) );
});
};
/*
Uploads a post or image to the system
*/
function upload(req, res, next)
{
var files=req.files.uploadFiles;
var uploadDir = req.body.uploadDir;
var cabinUploadDir = cabinDirectory+'/'+uploadDir;
var type = req.body.type;
files.forEach( function( file )
{
var destinationFile = cabinUploadDir + file.name;
if( type== "post" )
{
var oldFile;
var postPublished = req.body.postPublished == "1";
var normalizedFilename = file.name[0] =="_" ? file.name.substr(1):file.name;
if( postPublished )
{
oldFile = cabinUploadDir + '_' + normalizedFilename;
if ( fs.existsSync(oldFile) ) fs.unlinkSync(oldFile);
}
else
{
oldFile = cabinUploadDir + normalizedFilename;
if ( fs.existsSync(oldFile) ) fs.unlinkSync(oldFile);
destinationFile = cabinUploadDir + '_' + file.name;
}
fs.renameSync( file.path, destinationFile );
}
if( type == "image" )
{
fs.renameSync(file.path, destinationFile );
fs.createReadStream(destinationFile).pipe(fs.createWriteStream(destinationFile.replace('./src','./dist')));
}
});
res.setHeader('Content-Type', 'application/json');
// response with basic file stats
res.end
(
JSON.stringify
({
uploadedFiles: files.map
(function (file)
{
return {
'size': file.size,
'path': type== "post" ? file.name:(uploadDir + file.name).substr(5)
}
}
)
})
);
}
/* LIST IMAGES */
function listImages(req, res, next)
{
res.setHeader('Content-Type', 'application/json');
res.end(JSON.stringify( dirTree( cabinDirectory+'/src/images',cabinDirectory+'/src' ), null, 4) );
}
/* LIST POSTS */
function listPosts(req, res, next)
{
var postFiles = {};
forAllFiles('./posts',
function (file, next) {
fs.readFile( file, 'utf8',function( err, content )
{
fs.stat(file, function( err, stats ){
var ofile = file;
file = path.basename(file);
postFiles[file] = getPostMeta( ofile,content,file );
next();
});
});
},
function (err) { res.setHeader('Content-Type', 'application/json'); res.end(JSON.stringify( err ? { "error":err }: postFiles ), null, 4 ); });
}
/* DELETE FILE */
function deleteFile(req, res, next)
{
var file = req.body.file;
fs.unlinkSync(file);
res.setHeader('Content-Type', 'application/json');
res.end(JSON.stringify( {deletedFile:file} ));
}
/* DOWNLOAD FILE */
function downloadFile(req, res, next)
{
var srcImage = getQueryVariable(req.url.replace('/?',''),'src' ) ;
var dstImage = getQueryVariable(req.url.replace('/?',''),'dst' ) ;
download( srcImage, dstImage, res )
}
/* CONNECT MIDDLEWARE */
function middleware(connect, options) {
var middlewares = [
connect().use(connect.bodyParser({ uploadDir: __dirname+'/tmp' })),
connect().use("/admin", connect.static(__dirname + "/admin")),
connect().use('/upload', upload),
connect().use('/listImages', listImages),
connect().use('/listPosts', listPosts ),
connect().use('/delete', deleteFile),
connect().use('/downloadFile', downloadFile)
];
var baseStaticDirs = [
cabinDirectory+'/dist'
,cabinDirectory+'/src/images'
,cabinDirectory+'/'
];
// add the static paths in options.base
baseStaticDirs.forEach(function (base) {
middlewares.push( connect.static( base ) );
});
return middlewares;
}
var cabinDirectory = "";
module.exports = function ( cabinGruntDir ){ cabinDirectory = cabinGruntDir; return middleware};