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105 lines
3.1 KiB
105 lines
3.1 KiB
/**
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* @fileoverview Simple directory traversal logic.
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* @author Nicholas C. Zakas
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*/
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"use strict";
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//------------------------------------------------------------------------------
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// Requirements
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//------------------------------------------------------------------------------
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var fs = require("fs"),
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path = require("path"),
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debug = require("debug");
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//------------------------------------------------------------------------------
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// Helpers
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//------------------------------------------------------------------------------
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debug = debug("eslint:traverse");
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/**
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* Walks a path recursively calling the callback on each file.
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* @param {string} name The file or directory path.
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* @param {string[]} extensions The file extensions that should cause the callback
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* to be called.
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* @param {Function} exclude The function to check if file/path should be excluded.
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* @param {Function} callback The function to call on each file.
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* @returns {void}
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* @private
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*/
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function walk(name, extensions, exclude, callback) {
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var stat, basename;
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stat = fs.statSync(name);
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function traverse(dir, stack) {
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stack.push(dir);
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fs.readdirSync(path.join.apply(path, stack)).forEach(function(file) {
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var filePath, fileStat;
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// skip all hidded things (dirs, files, links)
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if (file[0] === ".") {
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return;
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}
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filePath = path.join.apply(path, stack.concat([file]));
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fileStat = fs.statSync(filePath);
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// if this file or directory is excluded from linting, skip over it.
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if (exclude && exclude(filePath)) {
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// console.log("Ignoring " + filePath);
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debug("Ignoring " + filePath);
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return;
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}
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// only call callback for files with correct extensions
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if (fileStat.isFile() && extensions.indexOf(path.extname(filePath)) > -1) {
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callback(filePath);
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} else if (fileStat.isDirectory()) {
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traverse(file, stack);
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}
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});
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stack.pop();
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}
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basename = path.basename(name);
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// don't ignore cases like 'eslint ./'
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if ((basename !== "." && basename !== ".." && basename[0] === ".") ||
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(exclude && exclude(name))) {
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debug("Ignoring " + name);
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return;
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}
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// always call callback for any files that are passed on the command line
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if (stat.isFile()) {
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callback(name);
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} else {
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traverse(name, []);
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}
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}
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/**
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* Traverses multiple directories and calls a callback on each file.
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* @param {Object} options The option for the traversal.
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* param {string[]} options.files An array of file and directory paths to traverse.
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* param {Function} options.exclude The function to check if file/path should be excluded.
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* @param {Function} callback A function to call for each file.
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* @returns {void}
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*/
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module.exports = function traverse(options, callback) {
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var files = options.files,
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exclude = options.exclude,
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extensions = options.extensions;
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files.forEach(function(file) {
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walk(file, extensions, exclude, callback);
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});
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};
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