duImplementation

This commit is contained in:
Habib 2014-09-26 20:26:21 -04:00
parent a7f0b440fb
commit 5969835f01
2 changed files with 229 additions and 0 deletions

View File

@ -266,6 +266,68 @@ Shell.prototype.ls = function(dir, options, callback) {
list(dir, callback);
};
Shell.prototype.du = function(dir, callback) {
var sh = this;
var fs = sh.fs;
callback = callback || function(){};
if(!dir) {
callback(new Errors.EINVAL('Missing dir argument'));
return;
}
function list(path, callback) {
var pathname = Path.resolve(sh.pwd(), path);
var result = [];
fs.readdir(pathname, function(error, entries) {
if(error) {
callback(error);
return;
}
function getDirEntry(name, callback) {
name = Path.join(pathname, name);
fs.stat(name, function(error, stats) {
if(error) {
callback(error);
return;
}
var entry = {
path: Path.basename(name),
links: stats.nlinks,
size: stats.size,
modified: stats.mtime,
type: stats.type
};
if(stats.type === 'DIRECTORY') {
list(Path.join(pathname, entry.path), function(error, items) {
if(error) {
callback(error);
return;
}
entry.contents = items;
result.push(entry);
callback();
});
} else {
result.push(entry);
callback();
}
});
}
async.eachSeries(entries, getDirEntry, function(error) {
callback(error, result);
});
});
}
list(dir, callback);
};
/**
* Removes the file or directory at `path`. If `path` is a file
* it will be removed. If `path` is a directory, it will be

167
tests/spec/shell/du.spec.js Normal file
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@ -0,0 +1,167 @@
var Filer = require('../../..');
var util = require('../../lib/test-utils.js');
var expect = require('chai').expect;
describe('FileSystemShell.du', function() {
beforeEach(util.setup);
afterEach(util.cleanup);
it('should be a function', function() {
var shell = util.shell();
expect(shell.du).to.be.a('function');
});
it('should fail when dirs argument is absent', function(done) {
var fs = util.fs();
var shell = fs.Shell();
shell.cat(null, function(error, list) {
expect(error).to.exist;
expect(error.code).to.equal("EINVAL");
expect(list).not.to.exist;
done();
});
});
it('should return size of the files', function(done) {
var fs = util.fs();
var shell = fs.Shell();
var contents = "a";
var contents2 = "bb";
fs.writeFile('/file', contents, function(err) {
if(err) throw err;
fs.writeFile('/file2', contents2, function(err) {
if(err) throw err;
shell.du('/', function(err, list) {
expect(err).not.to.exist;
expect(list.length).to.equal(2);
var item0 = list[0];
expect(item0.path).to.equal('file');
expect(item0.size).to.equal(1);
expect(item0.contents).not.to.exist;
var item1 = list[1];
expect(item1.path).to.equal('file2');
expect(item1.size).to.equal(2);
expect(item0.contents).not.to.exist;
done();
});
});
});
});
it('should return the shallow contents of a dir tree', function(done) {
var fs = util.fs();
var shell = fs.Shell();
var contents = "a";
fs.mkdir('/dir', function(err) {
if(err) throw err;
fs.mkdir('/dir/dir2', function(err) {
if(err) throw err;
fs.writeFile('/dir/file', contents, function(err) {
if(err) throw err;
fs.writeFile('/dir/file2', contents, function(err) {
if(err) throw err;
shell.du('/dir', function(err, list) {
expect(err).not.to.exist;
expect(list.length).to.equal(3);
// We shouldn't rely on the order we'll get the listing
list.forEach(function(item, i, arr) {
switch(item.path) {
case 'dir2':
expect(item.size).to.be.a('number');
expect(item.contents).not.to.exist;
break;
case 'file':
case 'file2':
expect(item.size).to.equal(1);
expect(item.contents).not.to.exist;
break;
default:
// shouldn't happen
expect(true).to.be.false;
break;
}
if(i === arr.length -1) {
done();
}
});
});
});
});
});
});
});
it('should return the deep contents of a dir tree', function(done) {
var fs = util.fs();
var shell = fs.Shell();
var contents = "a";
fs.mkdir('/dir', function(err) {
if(err) throw err;
fs.mkdir('/dir/dir2', function(err) {
if(err) throw err;
fs.writeFile('/dir/dir2/file', contents, function(err) {
if(err) throw err;
fs.writeFile('/dir/file', contents, function(err) {
if(err) throw err;
fs.writeFile('/dir/file2', contents, function(err) {
if(err) throw err;
shell.du('/dir', { recursive: true }, function(err, list) {
expect(err).not.to.exist;
expect(list.length).to.equal(3);
// We shouldn't rely on the order we'll get the listing
list.forEach(function(item, i, arr) {
switch(item.path) {
case 'dir2':
expect(item.size).to.be.a('number');
expect(item.contents).to.exist;
expect(item.contents.length).to.equal(1);
var contents0 = item.contents[0];
expect(contents0.path).to.equal('file');
expect(contents0.size).to.equal(1);
expect(contents0.contents).not.to.exist;
break;
case 'file':
case 'file2':
expect(item.size).to.equal(1);
expect(item.contents).not.to.exist;
break;
default:
// shouldn't happen
expect(true).to.be.false;
break;
}
if(i === arr.length -1) {
done();
}
});
});
});
});
});
});
});
});
});