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added module dir

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coderaiser 2013-04-07 06:54:29 -04:00
parent 91a72c96df
commit d91c8dc97c
1 changed files with 64 additions and 0 deletions
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lib/server/dir.js Normal file
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/* inspired by http://procbits.com/2011/10/29/a-node-js-experiment-thinking-asynchronously-recursion-calculate-file-size-directory */
(function(){
'use strict';
if(!global.cloudcmd)
return console.log(
'# dirsize.js' + '\n' +
'# -----------' + '\n' +
'# Module is part of Cloud Commander,' + '\n' +
'# used for getting dir size.' + '\n' +
'# If you wont to see at work' + '\n' +
'# try GET /api/v1/fs/etc?size or' + '\n' +
'# dir.getSize(\'/etc, function(err, size){' + '\n' +
'# });' + '\n' +
'# http://coderaiser.github.com/cloudcmd' + '\n');
var main = global.cloudcmd.main,
fs = main.fs,
path = main.path;
exports.getSize = function(pDir, pCallBack) {
var lAsyncRunning = 0,
lFileCounter = 1,
lTotal = 0;
function getDirSize(pDir) {
/* The lstat() function shall be equivalent to stat(),
except when path refers to a symbolic link. In that case lstat()
shall return information about the link, while stat() shall return
information about the file the link references. */
fs.lstat(pDir, function(pError, pStat) {
--lFileCounter;
if (!pError) {
if ( pStat.isFile() )
lTotal += pStat.size;
else if ( pStat.isDirectory() ) {
++lAsyncRunning;
fs.readdir(pDir, function(pError, pFiles) {
lAsyncRunning--;
if (!pError){
lFileCounter += pFiles.length;
var lDirPath;
for (var i = 0, n = pFiles.length; i < n; i++) {
lDirPath = path.join(pDir, pFiles[i]);
getDirSize(lDirPath);
}
}
});
}
}
if (!lFileCounter && !lAsyncRunning)
pCallBack(null, lTotal);
});
}
return getDirSize(pDir);
};
})();