fs-crawler - npm Package Compare versions

Comparing version 0.0.1 to 0.0.2

gulpfile.js

 'use strict';
 
-var gulp = require('gulpfile.basics');
-
-var gutil = require('gulp-util');
-var gulpJsdoc2md = require('gulp-jsdoc-to-markdown');
-var concat = require('gulp-concat');
-
-gulp.task('doc', function() {
-  return gulp.src('lib/**/*.js')
-    .pipe(concat('API.md'))
-    .pipe(gulpJsdoc2md({}))
-    .on('error', function(err){
-      gutil.log('jsdoc2md failed:', err.message);
-    })
-    .pipe(gulp.dest('./'));
-});
+require('gulpfile.basics');

lib/fs-crawler.js

 'use strict';
 
-var Readable = require('stream').Readable;
-var util     = require('util');
-var Context  = require('./tools/context');
-var fs       = require('./tools/fs');
+var Readable     = require('stream').Readable;
+var util         = require('util');
+var Context      = require('./Context');
+var Options      = require('./tools/options');
+var fs           = require('./tools/fs');
 
@@ -11,82 +12,121 @@
 
-function Crawler (options) {
-    if (!(this instanceof Crawler)) {
-        return new Crawler(options);
+function Crawler () {
+  var self = this;
+  var context;
+
+  if (!(this instanceof Crawler)) {
+    // enforce instantiation
+    return new Crawler();
+  }
+
+  Readable.call(this);
+
+  this._read = function _read () {
+
+    if (!context.file.hasNext() && context.folder.hasNext()) {
+
+      // all files has been streamed yet,
+      // but some directories have not been crawled
+      var path = context.folder.next();
+
+      if (path) {
+        // wait for directory listing to end
+        self.pause();
+
+        fs.list(context, path, function dirCrawlHandler() {
+          // reactivate crawler
+          self.resume();
+        });
+      }
     }
+    if (!context.file.hasNext() && !this._readableState.buffer.length) {
+      console.log('- CRAWL END');
+      // the end of the directory structure has been reached
+      var report = {
+        duration: new Date() - new Date(context.crawlSessionTime())
+      };
 
-    Readable.call(this, options);
+      if (context.file.all().length) {
+        report.data = context.file.all();
+      }
 
-    if (typeof options.maxDepth !== 'number') {
-        options.maxDepth = 0;
+      self.emit('end', report);
     }
+    else if (context.file.hasNext()) {
+      // emit next file stats
+      var stats = context.file.next();
 
-    var directoryPointer = 0;
-    var filepathPointer  = 0;
+      self.push(JSON.stringify(stats));
+    }
+  };
 
-    // private crawler context
-    var context          = Context.get(options);
+  this._readSync = function _readSync () {
 
-    this.hasNextDirectory = function hasNextDirectory () {
-        return directoryPointer < context.directories.length;
-    };
+    while (context.folder.hasNext()) {
+      // all files has been streamed yet,
+      // but some directories have not been crawled
+      var path = context.folder.next();
 
-    this.hasNextFilepath = function hasNextFilepath () {
-        return filepathPointer < context.filepaths.length;
-    };
+      if (path) {
+        fs.list(context, path, function dirCrawlHandler() {
+          // reactivate crawler
+        });
+      }
+    }
 
-    var self = this;
+    // emit all files stats
+    return context.file.all();
+  };
 
-    this.restart = function restart (delay) {
-        delay = (typeof delay === 'number' ? delay : 1000);
+  this.crawlTree = function crawlTree (absolutPath, options) {
+    options           = Options.validateTreeOptions(options);
+    options.crawlMode = Options.CRAWL_TREE_MODE;
+    options.transmissionMode = Options.TRANSMISSION_ASYNC_MODE;
+    options.root      = absolutPath;
 
-            setTimeout(function delayedRestart () {
-                directoryPointer = 0;
-                filepathPointer = 0;
-                context = Context.get(options);
+    context = new Context(options);
 
-                self._read();
-            }, delay);
-    };
+    self._read();
+    self.resume();
 
-    this._read = function _read () {
+    return self;
+  };
 
-        if (!this.hasNextFilepath() && this.hasNextDirectory() && (options.maxDepth === 0 || context.depthPointer < options.maxDepth)) {
+  this.crawlTreeSync = function crawlTreeSync (absolutPath, options) {
+    options           = Options.validateTreeOptions(options);
+    options.crawlMode = Options.CRAWL_TREE_MODE;
+    options.transmissionMode = Options.TRANSMISSION_SYNC_MODE;
+    options.root      = absolutPath;
 
-            // all files has been streamed yet,
-            // but some directories have not been crawled
-            var path = context.directories[directoryPointer];
-            directoryPointer += 1;
+    context = new Context(options);
 
-            // wait for directory listing to end
-            this.pause();
+    return self._readSync();
+  };
 
-            fs.list(context, path, function dirCrawlHandler () {
-                // reactivate crawler
-                self.resume();
-            });
-        }
-        if (!this.hasNextFilepath() && !this._readableState.buffer.length) {
-            // the end of the directory structure has been reached
-            var report = {
-                duration: new Date() - new Date(context.crawlTimestamp)
-            };
+  this.crawlPath = function crawlPath (absolutPath, options) {
+    options           = Options.validateTreeOptions(options);
+    options.crawlMode = Options.CRAWL_PATH_MODE;
+    options.transmissionMode = Options.TRANSMISSION_ASYNC_MODE;
+    options.root      = absolutPath;
 
-            if (options.flushOnEnd) {
-                // add crawled files to report
-                report.files = context.filestats;
-            }
+    context = new Context(options);
 
-            this.emit('end', report);
-        }
-        else {
-            // emit next filestats
-            var filepath = context.filepaths[filepathPointer];
-            var stats    = JSON.stringify(context.filestats[filepath]);
-            filepathPointer += 1;
+    self._read();
+    self.resume();
 
-            this.push(stats);
-        }
-    };
+    return self;
+  };
+
+  this.crawlPathSync = function crawlPathSync (absolutPath, options) {
+    options           = Options.validateTreeOptions(options);
+    options.crawlMode = Options.CRAWL_PATH_MODE;
+    options.transmissionMode = Options.TRANSMISSION_SYNC_MODE;
+    options.root      = absolutPath;
+
+    context = new Context(options);
+
+    return self._readSync();
+  };
 }
 
 module.exports = Crawler;

lib/tools/fs.js

@@ -6,46 +6,77 @@ 'use strict';
 
-exports.list = function list (context, dirpath, callback) {
-  var depth = context.depths;
+exports.formatStats = function formatStats (absolutePath, rawStats, crawlSessionTime, folderId) {
+  var stats = {
+    name:              path.basename(absolutePath),
+    path:              absolutePath,
+    folderId:          folderId,
+    crawlSessionTime:  crawlSessionTime
+  };
 
-  if (context.depths.indexOf(dirpath) < 0) {
-    // directory path is not part of this depth
-    // starting crawling of new depth
-    depth                = [];
-    context.depths.push(depth);
-    context.depthPointer += 1;
+  if (rawStats) {
+    if (rawStats instanceof Error) {
+      stats.error = rawStats;
+    }
+    else {
+      stats.stats = rawStats;
+      stats.is = {
+        directory: rawStats.isDirectory(),
+        blockDevice: rawStats.isBlockDevice(),
+        characterDevice: rawStats.isCharacterDevice(),
+        FIFO: rawStats.isFIFO(),
+        socket: rawStats.isSocket(),
+        link: rawStats.isSymbolicLink()
+      };
+    }
   }
 
-  var folders = fs.readdirSync(dirpath);
+  return stats;
+};
+
+exports.stats = function stats (context, absolutePath, callback) {
+  var fileStats = null;
+  var stats     = null;
+
+  if (!context.ignoreStats()) {
+    try {
+      stats = fs.lstatSync(absolutePath);
+
+      if (stats.isDirectory() && context.isTreeMode()) {
+        // directories found on the actual depth
+        // are part of the next depth's directories
+        context.folder.add(absolutePath);
+      }
+
+      fileStats = exports.formatStats(absolutePath, stats, context.crawlSessionTime(), context.folderId());
+
+      if (fileStats.is.link) {
+        var info = exports.getSymlinkInfo(absolutePath);
+
+        fileStats.targetPath = info.target;
+        fileStats.targetStats = info.stats || null;
+      }
+    }
+    catch (error) {
+      stats = error;
+    }
+  }
+
+  fileStats = exports.formatStats(absolutePath, stats, context.crawlSessionTime(), context.folderId());
+
+  return fileStats;
+};
+
+exports.list = function list (context, dirpath, callback) {
+  var files    = fs.readdirSync(dirpath);
   var content = {};
 
-  folders.forEach(function folderIterator (name) {
+  files.forEach(function folderIterator (name) {
     var absolutePath = dirpath + path.sep + name;
-    var stats = fs.lstatSync(absolutePath);
 
-    if (stats.isDirectory()) {
-      depth.push(absolutePath);
-      context.directories.push(absolutePath);
-    }
+    if (exports.filter(context.filters(), absolutePath)) {
+      var fileStats = exports.stats(context, absolutePath);
 
-    context.filepaths.push(absolutePath);
-    context.filestats[absolutePath] = {
-      path: absolutePath,
-      crawlTimestamp: context.crawlTimestamp,
-      stats: stats,
-      isDirectory: stats.isDirectory(),
-      isBlockDevice: stats.isBlockDevice(),
-      isCharacterDevice: stats.isCharacterDevice(),
-      isFIFO: stats.isFIFO(),
-      isSocket: stats.isSocket(),
-      isLink: stats.isSymbolicLink()
-    };
+      context.file.add(fileStats);
 
-    if (context.filestats[absolutePath].isSymbolicLink) {
-      var info = exports.getSymlinkInfo(absolutePath);
-
-      context.filestats[absolutePath].links    = info.links;
-      context.filestats[absolutePath].isBroken = info.isBroken;
+      content[absolutePath] = fileStats;
     }
-
-    content[absolutePath] = context.filestats[absolutePath];
   });
@@ -60,11 +91,12 @@
   var info        = {
-    links: targetpath
+    target: targetpath
   };
 
   try {
-    info.stats = fs.lstatSync(linkpath);
-    info.isBroken = false;
+    info.stats    = fs.lstatSync(targetpath);
   }
   catch (linkException) {
-    info.isBroken = true;
+    if (linkException.code !== 'ENOENT') {
+      throw linkException;
+    }
   }
@@ -74,1 +106,31 @@
 };
+
+exports.filter = function filter (filters, absolutePath) {
+  var valid = false;
+
+  if (filters) {
+    var index = filters.length;
+
+    while (index--) {
+      var currentFilter = filters[index];
+
+      if (typeof currentFilter === 'string') {
+        // converting file extension string to a regular expression
+        currentFilter = new RegExp('\.*\\.' + currentFilter + '$');
+      }
+
+      valid = currentFilter.test(absolutePath);
+
+      if (valid) {
+        // one filter is valid: no need to continue checking
+        break;
+      }
+    }
+  }
+  else {
+    // no filters defined: everything is valid
+    valid = true;
+  }
+
+  return valid;
+};

package.json

 {
   "name": "fs-crawler",
   "license": "MIT",
-  "version": "0.0.1",
+  "version": "0.0.2",
   "homepage": "https://github.com/luscus/fs-crawler",
@@ -18,11 +18,5 @@ "author": "https://github.com/luscus/fs-crawler/graphs/contributors",
     "chai": "^3.4.1",
-    "devmode": "^1.0.1",
     "gulp": "^3.9.0",
-    "gulp-concat": "^2.6.0",
-    "gulp-jsdoc-to-markdown": "^1.2.0",
-    "gulp-rename": "^1.2.2",
-    "gulp-util": "^3.0.6",
-    "gulpfile.basics": "^0.0.3",
-    "mocha": "^2.3.4",
-    "pem": "^1.8.1"
+    "gulpfile.basics": "^0",
+    "mocha": "^2.3.4"
   },
@@ -29,0 +23,0 @@ "repository": {

README.md

@@ -14,44 +14,44 @@ # fs-crawler
 
-## Installation
+## Configuration Options
 
-### Node Dependencies
+### Common
 
-Execute following line
+* `maxDepth` {number}: max number of folder depth to be crawled to
+* `noStats` {boolean}: no file statistics will be retrieved - sparing I/O - only absolute path will be returned
+* `filters` {string[]|regex[]}: a mixed array of file extension strings or regular expressions applied against every found file path
 
-    npm install fs-crawler --save
+### ASYNC Mode Specific
 
-### Require module
+* `flushOnEnd` {boolean}: returns all the data at the end of the stream
 
-    var Crawler = require('fs-crawler');
-    
-    var options = {
-      root: '/some/absolut/path/to/directory',
-      flushOnEnd: true, // all found filesystem elements are returned on 'end'
-      maxDepth: 0       // max subdirectory depth for crawling, 0 = infinity
-    };
-    
-    var crawler = new Crawler(options);
-    crawler.setEncoding('utf8'); // String wanted not Buffer
-    
-    crawler.on('data', function (data) {
-      // information about a file or a directory
-      console.log(data);
-    });
-    
-    crawler.on('end', function (data) {
-      // returns crawl duration in milliseconds
-      // and optionally the found elements
-      console.log(data);
-      
-      // recrawls the filesystem using the same options
-      crawler.restart(2000);
-    });
-    
-    // start streaming
-    crawler.resume();
+### Path Mode Specific
 
+* `reverse` {boolean}: path will be traversed from `maxDepth` to `root`
+
 ## Usage
 
-### match, matchInRoot, matchInExternal
+### Installation
 
+```bash
+npm install fs-crawler --save
+```
+
+### Require module
+
+```javascript
+var Crawler = require('fs-crawler');
+
+var options  = {
+  reverse: true,
+  noStats: false,
+  filters: ['txt'],
+  maxDepth: 4
+};
+
+
+var crawler = new Crawler();
+
+var results = crawler.crawlTreeSync(testRoot, options);
+```
+
 -------------------
@@ -58,0 +58,0 @@ Copyright (c) 2016 Luscus ([e-mail])

reports/converage.json

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test/fs-crawler.spec.js

 'use strict';
 
 var path    = require('path');
-var devmode = require('devmode');
 
 require('chai').should();
 
-var Crawler = require('../lib/fs-crawler');
-var options = {
-  root: path.normalize(__dirname + path.sep + '..' + path.sep + 'lib'),
-  maxDepth: 0
+var Crawler  = require('../lib/fs-crawler');
+var testPath = path.normalize(__dirname + path.sep + 'fs');
+var options  = {
+  reverse: true,
+  noStats: false,
+  filters: ['txt'],
+  maxDepth: 4
 };
 
 
-var crawler = new Crawler(options);
+var crawler = new Crawler();
+
+var results = crawler.crawlTreeSync(testPath, options);
 crawler.setEncoding('utf8');
 
 crawler.on('data', function (data) {
-  console.log('=>'+data+'<=');
+  data = JSON.parse(data);
+
+  console.log(data.folderId, '=>', data.path);
 });
 
 crawler.on('end', function (data) {
-  console.log(data, '\n');
+  console.log(data);
 });
@@ -25,0 +31,0 @@

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