path 1.6.4
A comprehensive, cross-platform path manipulation library for Dart.
The path package provides common operations for manipulating paths: joining, splitting, normalizing, etc.
We've tried very hard to make this library do the "right" thing on whatever
platform you run it on, including in the browser. When you use the top-level
functions, it will assume the current platform's path style and work with
that. If you want to explicitly work with paths of a specific style, you can
construct a p.Context
for that style.
Using #
The path library was designed to be imported with a prefix, though you don't have to if you don't want to:
import 'package:path/path.dart' as p;
The most common way to use the library is through the top-level functions. These manipulate path strings based on your current working directory and the path style (POSIX, Windows, or URLs) of the host platform. For example:
p.join('directory', 'file.txt');
This calls the top-level join()
function to join "directory" and
"file.txt" using the current platform's directory separator.
If you want to work with paths for a specific platform regardless of the underlying platform that the program is running on, you can create a Context and give it an explicit [Style]:
var context = new p.Context(style: Style.windows);
context.join('directory', 'file.txt');
This will join "directory" and "file.txt" using the Windows path separator, even when the program is run on a POSIX machine.
Stability #
The path
package is used by many Dart packages, and as such it strives for a
very high degree of stability. For the same reason, though, releasing a new
major version would probably cause a lot of versioning pain, so some flexibility
is necessary.
We try to guarantee that operations with valid inputs and correct output will
not change. Operations where one or more inputs are invalid according to the
semantics of the corresponding platform may produce different output over time.
Operations for which path
produces incorrect output will also change so that
we can fix bugs.
Also, the path
package's URL handling is based on the WHATWG URL spec.
This is a living standard, and some parts of it haven't yet been entirely
solidified by vendor support. The path
package reserves the right to change
its URL behavior if the underlying specification changes, although if the change
is big enough to break many valid uses we may elect to treat it as a breaking
change anyway.
FAQ #
Where can I use this? #
The path
package runs on the Dart VM and in the browser under both dart2js and
Dartium. On the browser, window.location.href
is used as the current path.
Why doesn't this make paths first-class objects? #
When you have path objects, then every API that takes a path has to decide if it accepts strings, path objects, or both.
-
Accepting strings is the most convenient, but then it seems weird to have these path objects that aren't actually accepted by anything that needs a path. Once you've created a path, you have to always call
.toString()
on it before you can do anything useful with it. -
Requiring objects forces users to wrap path strings in these objects, which is tedious. It also means coupling that API to whatever library defines this path class. If there are multiple "path" libraries that each define their own path types, then any library that works with paths has to pick which one it uses.
-
Taking both means you can't type your API. That defeats the purpose of having a path type: why have a type if your APIs can't annotate that they expect it?
Given that, we've decided this library should simply treat paths as strings.
How cross-platform is this? #
We believe this library handles most of the corner cases of Windows paths (POSIX paths are generally pretty straightforward):
-
It understands that both "/" and "\" are valid path separators, not just "\".
-
It can accurately tell if a path is absolute based on drive-letters or UNC prefix.
-
It understands that "/foo" is not an absolute path on Windows.
-
It knows that "C:\foo\one.txt" and "c:/foo\two.txt" are two files in the same directory.
What is a "path" in the browser? #
If you use this package in a browser, then it considers the "platform" to be the browser itself and uses URL strings to represent "browser paths".
1.6.4 #
-
Fixed a number of lints that affect the package health score.
-
Added an example.
1.6.3 #
- Don't throw a FileSystemException from
current
if the working directory has been deleted but we have a cached one we can use.
1.6.2 #
- Set max SDK version to
<3.0.0
, and adjust other dependencies.
1.6.1 #
- Drop the
retype
implementation for compatibility with the latest SDK.
1.6.0 #
-
Add a
PathMap
class that uses path equality for its keys. -
Add a
PathSet
class that uses path equality for its contents.
1.5.1 #
- Fix a number of bugs that occurred when the current working directory was
/
on Linux or Mac OS.
1.5.0 #
- Add a
setExtension()
top-level function andContext
method.
1.4.2 #
-
Treat
package:
URLs as absolute. -
Normalize
c:\foo\.
toc:\foo
.
1.4.1 #
- Root-relative URLs like
/foo
are now resolved relative to the drive letter forfile
URLs that begin with a Windows-style drive letter. This matches the WHATWG URL specification.
- When a root-relative URLs like
/foo
is converted to a Windows path usingfromUrl()
, it is now resolved relative to the drive letter. This matches IE's behavior.
1.4.0 #
-
Add
equals()
,hash()
andcanonicalize()
top-level functions andContext
methods. These make it easier to treat paths as map keys. -
Properly compare Windows paths case-insensitively.
-
Further improve the performance of
isWithin()
.
1.3.9 #
- Further improve the performance of
isWithin()
when paths contain/.
sequences that aren't/../
.
1.3.8 #
-
Improve the performance of
isWithin()
when the paths don't contain asymmetrical.
or..
components. -
Improve the performance of
relative()
whenfrom
isnull
and the path is already relative. -
Improve the performance of
current
when the current directory hasn't changed.
1.3.7 #
- Improve the performance of
absolute()
andnormalize()
.
1.3.6 #
- Ensure that
path.toUri
preserves trailing slashes for relative paths.
1.3.5 #
- Added type annotations to top-level and static fields.
1.3.4 #
- Fix dev_compiler warnings.
1.3.3 #
- Performance improvement in
Context.relative
- don't callcurrent
iffrom
is not relative.
1.3.2 #
- Fix some analyzer hints.
1.3.1 #
- Add a number of performance improvements.
1.3.0 #
- Expose a top-level
context
field that provides access to aContext
object for the current system.
1.2.3 #
- Don't cache path Context based on cwd, as cwd involves a system-call to compute.
1.2.2 #
- Remove the documentation link from the pubspec so this is linked to pub.flutter-io.cn by default.
1.2.1 #
-
Many members on
Style
that provided access to patterns and functions used internally for parsing paths have been deprecated. -
Manually parse paths (rather than using RegExps to do so) for better performance.
1.2.0 #
- Added
path.prettyUri
, which produces a human-readable representation of a URI.
1.1.0 #
path.fromUri
now accepts strings as well asUri
objects.
// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
import 'package:path/path.dart' as p;
void main() {
print('Current path style: ${p.style}');
print('Current process path: ${p.current}');
print('Separators');
for (var entry in [p.posix, p.windows, p.url]) {
print(' ${entry.style.toString().padRight(7)}: ${entry.separator}');
}
}
Use this package as a library
1. Depend on it
Add this to your package's pubspec.yaml file:
dependencies:
path: ^1.6.4
2. Install it
You can install packages from the command line:
with pub:
$ pub get
with Flutter:
$ flutter pub get
Alternatively, your editor might support pub get
or flutter pub get
.
Check the docs for your editor to learn more.
3. Import it
Now in your Dart code, you can use:
import 'package:path/path.dart';
Popularity:
Describes how popular the package is relative to other packages.
[more]
|
100
|
Health:
Code health derived from static analysis.
[more]
|
100
|
Maintenance:
Reflects how tidy and up-to-date the package is.
[more]
|
100
|
Overall:
Weighted score of the above.
[more]
|
100
|
We analyzed this package on Dec 9, 2019, and provided a score, details, and suggestions below. Analysis was completed with status completed using:
- Dart: 2.6.1
- pana: 0.13.1+4