file_utils

File utils is a collection of the helper classes for file system.

Includes the following helpers:

FileList

Intelligent search of files with reduced amount of operations of disk access.

FileUtils

The collection of the helper methods for file system.

Includes the following methods:

basename
chdir
dirempty
dirname
exclude
fullpath
getcwd
glob
include
mkdir
move
rename
rm
rmdir
symlink
testfile
touch
uptodate

FilePath

The collection of the helper methods for file path.

Includes the following methods:

expand
fullname

Examples of FileList:

import "dart:io";
import "package:file_utils/file_utils.dart";

void main() {
  var pubCache = getPubCachePath();
  // Find "CHANGELOG" in "pub cache"
  if (pubCache != null) {
    var mask = "**/CHANGELOG*";
    var directory = new Directory(pubCache);
    var files = new FileList(directory, mask, caseSensitive: false);
    if (!files.isEmpty) {
      var list = files.toList();
      var length = list.length;
      print("Found $length 'CHANGELOG' files");
      for (var file in files) {
        print(file);
      }
    }
  }
}

String getPubCachePath() {
  var result = Platform.environment["PUB_CACHE"];
  if (result != null) {
    return result;
  }

  if (Platform.isWindows) {
    result = FilePath.expand(r"$APPDATA/Pub/Cache");
  } else {
    result = FilePath.expand("~/.pub-cache");
  }

  return result;
}

Examples of FilePath:

void main() {
  // Expand path
  var path = FilePath.expand("~");
  print(path);

  // Full path name
  path = FilePath.fullname("~/video/../music");
  print(path);
}

Examples of FileUtils:

import "dart:io";
import "package:file_utils/file_utils.dart";

void main() {
  // basename
  print("basename:");
  var path = FileUtils.getcwd();
  var name = FileUtils.basename(path);
  print("path: $path");
  print("name: $name");
  print("=============");

  // chdir
  print("chdir:");
  var save = FileUtils.getcwd();
  print("cwd: $save");

  FileUtils.chdir("..");
  path = FileUtils.getcwd();
  print("cwd: $path");

  FileUtils.chdir("~");
  path = FileUtils.getcwd();
  print("cwd: $path");

  FileUtils.chdir(save);
  path = FileUtils.getcwd();
  print("cwd: $path");
  print("=============");

  // dirempty
  print("dirempty:");

  var empty = FileUtils.dirempty(".");
  print("path: .");
  print("empty: $empty");

  FileUtils.mkdir(["temp"]);
  empty = FileUtils.dirempty("temp");
  print("path: temp");
  print("empty: $empty");
  FileUtils.rmdir(["temp"]);
  print("=============");

  // dirname
  print("dirname:");
  path = FileUtils.getcwd();
  name = FileUtils.dirname(path);
  print("path: $path");
  print("name: $name");
  print("=============");

  // exclude
  print("exclude:");
  var files = FileUtils.glob("*.dart");
  files = FileUtils.exclude(files, "*_utils.dart");
  print("exclude: *_utils.dart");
  print("files: $files");
  print("=============");

  // fullpath
  print("fullpath:");
  path = FileUtils.fullpath("../packages");
  print("name: ../packages");
  print("path: $path");

  // getcwd
  print("getcwd:");
  path = FileUtils.getcwd();
  print("cwd: $path");
  print("=============");

  // glob
  print("glob:");
  save = FileUtils.getcwd();
  FileUtils.chdir("..");
  var dirs = FileUtils.glob("*/");
  dirs = dirs.map((e) => FileUtils.basename(e));
  print("glob: $dirs");
  FileUtils.chdir(save);
  print("=============");

  // include
  print("exclude:");
  files = FileUtils.glob("*.dart");
  files = FileUtils.include(files, "*_utils.dart");
  print("include: *_utils.dart");
  print("files: $files");
  print("=============");

  // mkdir
  print("mkdir:");
  FileUtils.mkdir(["temp"]);
  FileUtils.chdir("temp");
  path = FileUtils.getcwd();
  print("cwd: $path");
  FileUtils.chdir("..");
  FileUtils.rmdir(["temp"]);
  print("=============");

  // move
  print("move:");
  FileUtils.mkdir(["temp1", "temp2"]);
  FileUtils.touch(["temp1/file.txt"]);
  FileUtils.move(["temp1/*.txt"], "temp2");

  files = FileUtils.glob("temp1/*.txt");
  files = files.map((e) => FileUtils.basename(e));
  print("path: temp1");
  print("files: $files");

  files = FileUtils.glob("temp2/*.txt");
  files = files.map((e) => FileUtils.basename(e));
  print("path: temp2");
  print("files: $files");

  FileUtils.rm(["temp1", "temp2"], recursive: true);

  // rename
  print("rename:");
  FileUtils.mkdir(["temp1"]);
  FileUtils.rename("temp1", "temp2");
  FileUtils.chdir("temp2");
  path = FileUtils.getcwd();
  print("cwd: $path");
  FileUtils.chdir("..");
  FileUtils.rmdir(["temp2"]);
  print("=============");

  // rm
  print("rm:");
  FileUtils.mkdir(["temp1"]);
  FileUtils.chdir("temp1");
  FileUtils.touch(["temp1/file.txt"]);
  path = FileUtils.chdir("..");
  FileUtils.rm(["temp1"], recursive: true);
  print("=============");

  // rmdir
  print("rmdir:");
  FileUtils.mkdir(["temp1"]);
  FileUtils.chdir("temp1");
  FileUtils.chdir("..");
  FileUtils.rmdir(["temp1"]);
  print("=============");

  // symlink
  print("symlink:");
  FileUtils.mkdir(["temp1"]);
  FileUtils.symlink("temp1", "temp2");
  FileUtils.chdir("temp2");
  path = FileUtils.getcwd();
  print("cwd: $path");
  FileUtils.chdir("..");
  FileUtils.rm(["temp1", "temp2"], recursive: true);
  print("=============");

  // testfile
  print("testfile:");
  FileUtils.mkdir(["temp1"]);
  var exists = FileUtils.testfile("temp1", "directory");
  print("path: temp1");
  print("exists: $exists");
  FileUtils.rmdir(["temp1"]);
  print("=============");

  // touch
  print("touch:");
  FileUtils.mkdir(["temp1"]);
  FileUtils.touch(["temp1/file1.txt"]);
  exists = FileUtils.testfile("temp1/file1.txt", "file");
  print("path: temp1/file1.txt");
  print("exists: $exists");
  FileUtils.rm(["temp1"], recursive: true);
  print("=============");

  // uptodate
  print("uptodate:");
  FileUtils.mkdir(["temp1"]);
  FileUtils.touch(["temp1/file1.txt"]);
  print("wait...");
  sleep(new Duration(milliseconds: 1000));
  FileUtils.touch(["temp1/file2.txt"]);
  var uptodate = FileUtils.uptodate("temp1/file1.txt", ["temp1/file2.txt"]);
  print("path: temp1/file1.txt");
  print("uptodate: $uptodate");
  FileUtils.rm(["temp1"], recursive: true);
  print("=============");
}

License

luisvt/file_utils

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