mirror of
https://github.com/coderaiser/cloudcmd.git
synced 2026-01-23 18:55:26 +00:00
104 lines
No EOL
3.8 KiB
JavaScript
104 lines
No EOL
3.8 KiB
JavaScript
/* inspired by http://procbits.com/2011/10/29/a-node-js-experiment-thinking-asynchronously-recursion-calculate-file-size-directory */
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(function(){
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'use strict';
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if(!global.cloudcmd)
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return console.log(
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'# dir.js' + '\n' +
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'# -----------' + '\n' +
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'# Module is part of Cloud Commander,' + '\n' +
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'# used for getting dir size.' + '\n' +
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'# If you wont to see at work' + '\n' +
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'# try GET /api/v1/fs/etc?size or' + '\n' +
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'# dir.getSize(\'/etc, function(err, size){' + '\n' +
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'# });' + '\n' +
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'# http://coderaiser.github.com/cloudcmd' + '\n');
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var main = global.cloudcmd.main,
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fs = main.fs,
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Util = main.util,
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path = main.path;
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exports.getSize = function(pDir, pCallBack) {
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var lTotal = 0;
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function calcSize(pParams){
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var lStat = pParams.stat,
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lSize = lStat && lStat.size || 0;
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lTotal += lSize;
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}
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processDir(pDir, calcSize, function(){
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Util.log(pDir + ' -> ' + lTotal);
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Util.exec(pCallBack, null, lTotal);
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});
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};
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function processDir(pDir, pFunc, pCallBack){
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var lAsyncRunning = 0,
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lFileCounter = 1;
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function getDirInfo(pDir) {
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/* The lstat() function shall be equivalent to stat(),
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except when path refers to a symbolic link. In that case lstat()
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shall return information about the link, while stat() shall return
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information about the file the link references. */
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fs.lstat(pDir, Util.call(getStat, {
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name: pDir
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}));
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}
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function getStat(pParams) {
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var lRet = Util.checkObj(pParams, ['params']);
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if(lRet){
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var p = pParams,
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d = p.params,
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lStat = p.data,
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lPath = d.name;
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--lFileCounter;
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if (!p.error) {
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if ( lStat.isFile() )
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Util.exec(pFunc, {
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name: d.name,
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stat: lStat
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});
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else if ( lStat.isDirectory() ) {
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++lAsyncRunning;
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fs.readdir(lPath, function(pError, pFiles) {
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lAsyncRunning--;
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var lDirPath, n;
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if (!pError){
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n = pFiles.length;
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lFileCounter += n;
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for (var i = 0; i < n; i++) {
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lDirPath = path.join(lPath, pFiles[i]);
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process.nextTick( Util.retExec(getDirInfo, lDirPath) );
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}
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}
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if(!n)
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execCallBack();
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});
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}
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}
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}
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execCallBack();
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}
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function execCallBack(){
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if (!lFileCounter && !lAsyncRunning)
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Util.exec(pCallBack);
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}
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getDirInfo(pDir);
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}
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})(); |