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index.js
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index.js
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'use strict';
var FS = require('fs');
var Path = require('path');
/**
*
* @class
* @param options
* @returns {Diread}
*/
function Diread(options) {
if(!(this instanceof Diread)) {
return new Diread(options);
}
this.initialize(options);
}
/**
* Creates directory reader
*
* @param {Object} options
* @param {String} options.src
* @param {Boolean} [options.directories=false]
* @param {Number} [options.level]
* @param {Function} [options.mask]
* @param {Boolean} [options.ignoreError=true]
*/
Diread.prototype.initialize = function(options) {
this._directory_path = Path.resolve(process.cwd(), options.src);
this._level = options.level || -1;
this._check_directories = options.directories || false;
this._mask = typeof options.mask === 'function'?
options.mask :
function() { return true; };
this._ignore_error = options.ignoreError === void 0?
true :
options.ignoreError;
this._current_read_level = 0;
this._list_of_file_path = [];
if(this._ignore_error) {
try {
this._read_by_path(this._directory_path, '');
} catch(err) {}
} else {
this._read_by_path(this._directory_path, '');
}
};
/**
* Returns list of find paths
*
* @param {Function} callback
*/
Diread.prototype.list = function(callback) {
callback(this._list_of_file_path);
};
/**
* Iterates by all paths
*
* @param {Function} callback
*/
Diread.prototype.each = function(callback) {
this._list_of_file_path.forEach(callback);
};
/**
* Maps by all paths
*
* @param {Function} callback
* @returns {Array}
*/
Diread.prototype.map = function(callback) {
return this._list_of_file_path.map(callback);
};
/**
* Reads by directory path and filters by directory path or/and file name
*
* @param {String} directory_path
* @param {String} [filename]
*/
Diread.prototype._read_by_path = function(directory_path, filename) {
var path = Path.join(directory_path, filename);
var is_directory = FS.statSync(path).isDirectory();
if(is_directory) {
if(this._check_directories && path !== this._directory_path) {
if(!this._mask(path)) {
return;
}
this._list_of_file_path.push(path);
}
this._current_read_level++;
this._read_directory(path);
return;
}
if(this._mask(path, filename)) {
this._list_of_file_path.push(path);
}
};
/**
* Reads and iterates directory content
*
* @param {String} directory_path
*/
Diread.prototype._read_directory = function(directory_path) {
if(this._level !== -1) {
if(this._current_read_level > this._level) {
this._current_read_level--;
return;
}
}
var self = this;
var files = FS.readdirSync(directory_path);
files.forEach(function(content_name) {
self._read_by_path(directory_path, content_name);
});
this._current_read_level--;
};
module.exports = Diread;