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Specified folder exclusion #3

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Specified folder exclusion #3

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20 changes: 18 additions & 2 deletions lib/dirsum.js
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Original file line number Diff line number Diff line change
Expand Up @@ -24,16 +24,24 @@ function _summarize(method, hashes) {
return obj;
}

function digest(root, method, callback) {
function digest(root, method, exclude, callback) {
if (!root || typeof(root) !== 'string') {
throw new TypeError('root is required (string)');
}

if (method) {
if (typeof(method) === 'string') {
// NO-OP
if(typeof(exclude) === 'function') {
callback = exclude;
exclude = [];
}else if(typeof(exclude) !== 'object'){
throw new TypeError('exclude must be an object');
}
} else if (typeof(method) === 'function') {
callback = method;
method = 'md5';
exclude = [];
} else {
throw new TypeError('hash must be a string');
}
Expand All @@ -49,12 +57,20 @@ function digest(root, method, callback) {
fs.readdir(root, function(err, files) {
if (err) return callback(err);

exclude.forEach(function(folder){
var index = files.indexOf(folder);
if(index != -1){
files.splice(index, 1);
}
});

if (files.length === 0) {
return callback(undefined, {hash: '', files: {}});
}

var hashed = 0;
files.forEach(function(f) {

var path = root + '/' + f;
fs.stat(path, function(err, stats) {
if (err) return callback(err);
Expand Down