Nodejs-fs-utils NPM

nodejs-fs-utils

NodeJs FileSystem (FS) extra utilities

Methods

rmdirs - remove a file or folder even it isn't empty ( accept specifying logic for symlinks )
rmdirsSync - synchronous version of rmdirs
mkdirs - creates a folder and it parent if it is needed ( accept specifying logic for symlinks )
mkdirsSync - synchronous version of mkdirs
emptyDir - remove contents of a dir
emptyDirSync - synchronous version of emptyDir
isEmpty - return if file is empty or not
isEmptySync - synchronous version of isEmpty
remove - remove file, directory or link
removeSync - synchronous version of remove
- symbolicLinks - treat symbolic links as files ( default true )
- skipErrors - skip errors just log them ( default false )
fsize - count file or folder size, has additional options
- symbolicLinks - treat symbolic links as files ( default true )
- countFolders - counts and folder inode size ( default true )
- countSymbolicLinks - counts symbolic links inode size ( default true )
- logErrors - log all error in an array ( default false )
- skipErrors - skip errors just log them ( default false )
fsizeSync - synchronous version of fsize
move - move files or folders
moveSync - synchronous version of move
- symlinksKeep - specify how to treat symlinks
  - ```
  accepted values: *"file", "directory", "all"*
```
- symlinksNormalize - specify if is needed link normalizing
  - ```
  accepted values: *"auto", "none", "relative", "absolute"*
```
- linkFiles - for files linking instead of coping
  - ```
  accepted values: *"auto", "none", "relative", "absolute"*
```
- symbolicLinks - treat symbolic links as files ( default true )
- countFolders - counts and folder inode size ( default true )
- countSymbolicLinks - counts symbolic links inode size ( default true )
- logErrors - log all error in an array ( default false )
- skipErrors - skip errors just log them ( default false )
copy - copy files or folders
copySync - synchronous version of copy
- symlinksKeep - specify how to treat symlinks
  - ```
  accepted values: *"file", "directory", "all"*
```
- symlinksNormalize - specify if is needed link normalizing
- ```
accepted values: *"auto", "none", "relative", "absolute"*
```
- linkFiles - for files linking instead of coping
  - ```
  accepted values: *"auto", "none", "relative", "absolute"*
```
- symbolicLinks - treat symbolic links as files ( default true )
- countFolders - counts and folder inode size ( default true )
- countSymbolicLinks - counts symbolic links inode size ( default true )
- logErrors - log all error in an array ( default false )
- skipErrors - skip errors just log them ( default false )
walk - walk throuth files, folder and links ( advanced configurations )
walkSync - synchronous version of walk
- walk method - examples

rmdirs

optional can be send fs module in "fs" option, P.S. it removes link files or directories.

    var fsUtils = require("nodejs-fs-utils");

    //removing a folder
    fsUtils.rmdirs("test/folder", function (err) {
        // callback code
    });

    // removing a folder and remove recursive in symbolic links
    // treat the as folders if necessary
    fsUtils.rmdirs("test/folder", function (err) {
        // callback code
    }, {
        symbolicLinks : false
    });

    // try to remove, skip errors
    fsUtils.rmdirs("test/folder", function (err) {
        // callback code
    }, {
        skipErrors      : true
    });

rmdirsSync

    var fsUtils = require("nodejs-fs-utils");

    // removing a folder
    // symbolic links will be unlinked instead of removing files from them
    fsUtils.rmdirsSync("test/folder");

    // removing a folder and remove recursive in symbolic links
    // treat the symbolic links as folders if these links to directories
    fsUtils.rmdirsSync("test/folder", {
        symbolicLinks : false
    });

    // try to remove, skip errors
    fsUtils.rmdirsSync("test/folder", {
        skipErrors      : true
    });

emptyDir

remove contents of a directory

    var fsUtils = require("nodejs-fs-utils");

    // removing folder's contents
    fsUtils.emptyDir("test/folder", function (err) {
        // callback code
    });

emptyDirSync

remove contents of a directory, synchronous

    var fsUtils = require("nodejs-fs-utils");

    // removing folder's contents
    fsUtils.emptyDirSync("test/folder");

isEmpty

checks if folder is empty

    var fsUtils = require("nodejs-fs-utils");

    // return state = true if folder is empty
    fsUtils.isEmpty("test/folder", function (err, state) {
        // callback code
    });

isEmptySync

checks if folder is empty, synchronous

    var fsUtils = require("nodejs-fs-utils");

    // return state = true if folder is empty
    fsUtils.isEmptySync("test/folder");

mkdirs - build a directory tree

optional can be send fs module in "fs" option

    var fsUtils = require("nodejs-fs-utils");

    // removing a folder
    // the function will stop an exception on symlink detection
    fsUtils.mkdirs("newfolder/folder/subfolder", function (err) {
        // callback code
    });

    // treat the symbolic links as folders if these links to directories
    fsUtils.rmdirs("newfolder/folder/symbolic-link/subfolder", {
        symbolicLinks : false
    }, function (err) {
        // callback code
    });

mkdirsSync

    var fsUtils = require("nodejs-fs-utils");

    // removing a folder
    // the function will throw an exception on symlink detection
    fsUtils.mkdirs("newfolder/folder/subfolder");

    // treat the symbolic links as folders if these links to directories
    fsUtils.rmdirs("newfolder/folder/symbolic-link/subfolder", {
        symbolicLinks : false
    });

remove

removing file or directories
similar / alias as rmdirs, click here to view.

removeSync

removing file or directories
similar / alias as rmdirs, click here to view.

fsize - advanced file size scan for links folders or files

optional can be send fs module in "fs" option

    var fsUtils = require("nodejs-fs-utils");

    // return file size
    fsUtils.fsize("videos/video.mp4", function (err, size) {
        // callback code
    });


    // the function will stop on a symlink detection
    fsUtils.fsize("newfolder/folder/subfolder", function (err, size) {
        // callback code
    });


    // treat the symbolic links as folders if these links to directories
    fsUtils.fsize("newfolder/folder/symbolic-link/subfolder", {
        symbolicLinks : false
    }, function (err, size) {
        // callback code
    });


    // don't stop scanning on errors
    fsUtils.fsize("newfolder/folder/symbolic-link/subfolder", {
        skipErrors : true
    }, function (err, size) {
        // callback code
    });


    // don't stop scanning on errors
    // return an array of all errors
    fsUtils.fsize("newfolder/folder/symbolic-link/subfolder", {
        skipErrors  : true,
        logErrors   : true
    }, function (err, size) {
        // callback code
    });


    // don't count folders size
    fsUtils.fsize("newfolder/folder/symbolic-link/subfolder", {
        countFolders    : false
    }, function (err, size) {
        // callback code
    });


    // don't scan links and don't count links size
    fsUtils.fsize("newfolder/folder/symbolic-link/subfolder", {
        countSymbolicLinks  : false
    }, function (err, size) {
        // callback code
    });

fsizeSync - file or folder size synchronous

    var fsUtils = require("nodejs-fs-utils");

    // return file size
    var size = fsUtils.fsizeSync("videos/video.mp4");


    // the function will stop on a symlink detection
    var size = fsUtils.fsizeSync("newfolder/folder/subfolder", function (err, size) {
        // callback code
    });


    // treat the symbolic links as folders if these links to directories
    var size = fsUtils.fsizeSync("newfolder/folder/symbolic-link/subfolder", {
        symbolicLinks : false
    });


    // don't stop scanning on errors
    var config  = { skipErrors : true };
    var size = fsUtils.fsizeSync("newfolder/folder/symbolic-link/subfolder", config);
    if (config.errors.length) {
        console.log("Error detected: ", config.errors[0])
    }


    // don't stop scanning on errors
    // return an array of all errors
    var config  = { skipErrors : true };
    var size = fsUtils.fsizeSync("newfolder/folder/symbolic-link/subfolder", config);
    if (config.errors.length) {
        console.log("Error detected: ", config.errors[0])
    }


    // don't count folders size
    var size = fsUtils.fsizeSync("newfolder/folder/symbolic-link/subfolder", {
        countFolders    : false
    });


    // don't scan links and don't count links size
    var size = fsUtils.fsizeSync("newfolder/folder/symbolic-link/subfolder", {
        countSymbolicLinks  : false
    });

move

move file of folders or links

options for move function:

symlinksNormalize - specify how to treat symlinks specify if is needed link normalizing accepted values: "auto", "none", "relative", "absolute" "auto", "none" or "absolute" - uses absolute path "relative" - uses relative paths for links P.S "auto" will be dynamic in future, will try to use relative if it is posible
symlinksKeep - specify if is needed to keep simplinks or to move files or folders accepted values: "file", "directory", "all"
linkFiles - for files linking instead of moving accepted values: "auto", "none", "relative", "absolute"
symbolicLinks - treat symbolic links as files ( default true )
countFolders - counts and folder inode size ( default true )
countSymbolicLinks - counts symbolic links inode size ( default true )
logErrors - log all error in an array ( default false )
skipErrors - skip errors just log them ( default false ) P.S. if is true the errors will be an array

move examples:

moveSync examples:

    var fsUtils = require("nodejs-fs-utils");

    // move file or folders
    fsUtils.move(__dirname + "/source", "./destination-path", function (err, cache) {
        if (!err) {
            console.log("Moved !");
        } else {
            console.error("Error", err)
        }
    });

    // move files and skip errors
    fsUtils.move(__dirname + "/source", "./destination-path", function (errors, cache) {
        if (!errors.length) {
            console.log("Moved !");
        } else {
            errors.forEach(function (err) {
                console.error("Error", err)
            });
        }
    }, {
        skipErrors  : true
    });

moveSync

synchronous version for move function

moveSync examples:

    var fsUtils = require("nodejs-fs-utils");
    var moveSync    = fsUtils.moveSync;

    // move file or folders
    moveSync(__dirname + "/source", "./destination-path", function (err, cache) {
        if (!err) {
            console.log("Moved !");
        } else {
            console.error("Error", err)
        }
    });

    // move files and skip errors
    moveSync(__dirname + "/source", "./destination-path", function (errors, cache) {
        if (!errors.length) {
            console.log("Moved !");
        } else {
            errors.forEach(function (err) {
                console.error("Error", err)
            });
        }
    }, {
        skipErrors  : true
    });

copy

copy file of folders or links

options for copy function:

symlinksNormalize - specify how to treat symlinks specify if is needed link normalizing accepted values: "auto", "none", "relative", "absolute" "auto", "none" or "absolute" - uses absolute path "relative" - uses relative paths for links P.S "auto" will be dynamic in future, will try to use relative if it is posible
symlinksKeep - specify if is needed to keep simplinks or to copy files or folders accepted values: "file", "directory", "all"
linkFiles - for files linking instead of coping accepted values: "auto", "none", "relative", "absolute"
symbolicLinks - treat symbolic links as files ( default true )
countFolders - counts and folder inode size ( default true )
countSymbolicLinks - counts symbolic links inode size ( default true )
logErrors - log all error in an array ( default false )
skipErrors - skip errors just log them ( default false ) P.S. if is true the errors will be an array

copy examples:

copySync examples:

    var fsUtils = require("nodejs-fs-utils");

    // copy file or folders
    fsUtils.copy(__dirname + "/source", "./destination-path", function (err, cache) {
        if (!err) {
            console.log("Copied !");
        } else {
            console.error("Error", err)
        }
    });

    // copy files and skip errors
    fsUtils.copy(__dirname + "/source", "./destination-path", function (errors, cache) {
        if (!errors.length) {
            console.log("Copied !");
        } else {
            errors.forEach(function (err) {
                console.error("Error", err)
            });
        }
    }, {
        skipErrors  : true
    });

    // link files instead of copying
    fsUtils.copy(__dirname + "/source", "./destination-path", function (err, cache) {
        if (!err) {
            console.log("Files were linked !");
        } else {
            console.error("Error", err)
        }
    }, {
        linkFiles   : "relative"
    });

copySync

synchronous version for copy function

copySync examples:

    var fsUtils = require("nodejs-fs-utils");
    var copySync    = fsUtils.copySync;

    // copy file or folders
    copySync(__dirname + "/source", "./destination-path", function (err, cache) {
        if (!err) {
            console.log("Copied !");
        } else {
            console.error("Error", err)
        }
    });

    // copy files and skip errors
    copySync(__dirname + "/source", "./destination-path", function (errors, cache) {
        if (!errors.length) {
            console.log("Copied !");
        } else {
            errors.forEach(function (err) {
                console.error("Error", err)
            });
        }
    }, {
        skipErrors  : true
    });

    // link files instead of copying
    copySync(__dirname + "/source", "./destination-path", function (err, cache) {
        if (!err) {
            console.log("Files were linked !");
        } else {
            console.error("Error", err)
        }
    }, {
        linkFiles   : "relative"
    });

walk - walk throuth files folder and links ( advanced configurations )

optional can be send fs module in "fs" option cache reference can be used for storing data while walking

    var fsUtils = require("nodejs-fs-utils");

    // walk througth a list of files and folders in a folder
    fsUtils.walk("./videos", function (err, path, stats, next, cache) {
        // callback code
        // ...
        // stats.isDirectory()
        // 
        // cache.errors is array of errors 
        // continue walk
        next();
    });

    // walk througth a list of files and folders in a folder
    fsUtils.walk("./videos", function (err, path, stats, next, cache) {
        // callback code
        // ...
        // stats.isDirectory()
        // 
        // cache.errors is array of errors 
        // continue walk
        next();
    }, function (cache) {
        console.log("Walk is finished");
    });


    // treat the symbolic links as folders if these links to directories
    fsUtils.walk("newfolder/folder/symbolic-link/subfolder", {
        symbolicLinks : false
    }, function (err, path, stats, next, cache) {
        // callback code
        next();
    });


    // don't stop scanning on errors
    fsUtils.walk("newfolder/folder/symbolic-link/subfolder", {
        skipErrors : true
    }, function (err, path, stats, next, cache) {
        // callback code
        next();
    });


    // don't stop scanning on errors
    // return an array of all errors in cache reference
    fsUtils.walk("newfolder/folder/symbolic-link/subfolder", {
        skipErrors  : true,
        logErrors   : true
    }, function (err, path, stats, next, cache) {
        // callback code
        next();
    }, function (cache) {
        if (cache.errors.length) {
            console.log("Errors: ", cache.errors);
        } else {
            console.log("No errors found");
        }
    });

walkSync - walk sync throuth files folder and links ( advanced configurations )

walkSync has same api as walk, but it is synchronous

    var fsUtils = require("nodejs-fs-utils");

    // walk througth a list of files and folders in a folder
    fsUtils.walkSync("./videos", function (err, path, stats, next, cache) {
        // callback code
        // ...
        // stats.isDirectory()
        // 
        // cache.errors is array of errors 
        // continue walk
        next();
    });

    // walk througth a list of files and folders in a folder
    fsUtils.walkSync("./videos", function (err, path, stats, next, cache) {
        // callback code
        // ...
        // stats.isDirectory()
        // 
        // cache.errors is array of errors 
        // continue walk
        next();
    }, function (cache) {
        console.log("Walk is finished");
    });


    // treat the symbolic links as folders if these links to directories
    fsUtils.walkSync("newfolder/folder/symbolic-link/subfolder", {
        symbolicLinks : false
    }, function (err, path, stats, next, cache) {
        // callback code
        next();
    });


    // don't stop scanning on errors
    fsUtils.walkSync("newfolder/folder/symbolic-link/subfolder", {
        skipErrors : true
    }, function (err, path, stats, next, cache) {
        // callback code
        next();
    });


    // don't stop scanning on errors
    // return an array of all errors in cache reference
    fsUtils.walkSync("newfolder/folder/symbolic-link/subfolder", {
        skipErrors  : true,
        logErrors   : true
    }, function (err, path, stats, next, cache) {
        // callback code
        next();
    }, function (cache) {
        if (cache.errors.length) {
            console.log("Errors: ", cache.errors);
        } else {
            console.log("No errors found");
        }
    });

walk - examples

getArray of folders in a array

    var fsUtils = require("nodejs-fs-utils");
    // getArray of folders in a array
    var folders = [];
    fsUtils.walkSync("newfolder/folder/symbolic-link/subfolder", {
        skipErrors  : true,
        logErrors   : true
    }, function (err, path, stats, next, cache) {
        if (!err && stats.isDirectory()) {
            folders.push(path);
        }
        next();
    });

remove folders with name "tmp"

    var fsUtils = require("nodejs-fs-utils");
    var fs      = require("fs");

    // synchronous
    fsUtils.walkSync("newfolder/folder/symbolic-link/subfolder", {
        skipErrors  : true,
        logErrors   : true
    }, function (err, path, stats, next, cache) {
        if (!err && stats.isDirectory() && path.match(/\/tmp$/)) {
            fs.unlinkSync(path);
        } else {
            next();
        }
    });

    // asynchronous
    fsUtils.walk("newfolder/folder/symbolic-link/subfolder", {
        skipErrors  : true,
        logErrors   : true,
        stackPushEnd: true // push new observed files to end of the stack insteat of beginig        
    }, function (err, path, stats, next, cache) {
        if (!err && stats.isDirectory() && path.match(/\/tmp$/)) {
            fs.unlinkSync(path);

            // for async to tell that step is done
            // without this row onend callback will not be trigered
            cache.count++;
        } else {
            next();
        }
    }, function (cache) { // optional
        console.log("Finished")
    });