Dart format support (#89)

* Dart format support

* fix: different architexture

* Update changelog

* Improve installation

Co-authored-by: Radon Rosborough <radon.neon@gmail.com>

CHANGELOG.md

@@ -13,11 +13,15 @@ The format is based on [Keep a Changelog].
   `apheleia--run-formatter-function`.
 * Emacs 25 is no longer supported.
 
+### Formatters
+* [dart-format](https://dart.dev/tools/dart-format) for Dart ([#89]).
+
 ### Features
 * Support remote files and buffers that were opened through TRAMP
   ([#33]).
 
 [#33]: https://github.com/raxod502/apheleia/issues/33
+[#89]: https://github.com/raxod502/apheleia/pull/89
 
 ## 2.0
 ### Breaking changes

apheleia.el

@@ -913,6 +913,7 @@ being run, for diagnostic purposes."
   '((black . ("black" "-"))
     (brittany . ("brittany"))
     (clang-format . ("clang-format"))
+    (dart-format . ("dart" "format"))
     (fish-indent . ("fish_indent"))
     (gofmt . ("gofmt"))
     (google-java-format . ("google-java-format" "-"))
@@ -1028,6 +1029,7 @@ function: %s" command)))
     (c-mode . clang-format)
     (c++-mode . clang-format)
     (css-mode . prettier)
+    (dart-mode . dart-format)
     (elixir-mode . mix-format)
     (fish-mode . fish-indent)
     (go-mode . gofmt)

test/formatters/installers/dart-format.bash

@@ -0,0 +1,24 @@
+arch="$(uname -m)"
+case "${arch}" in
+    "x86_64")
+        arch="x64"
+        ;;
+    "i386")
+        arch="ia32"
+        ;;
+    "aarch64")
+        arch="arm64"
+        ;;
+    *)
+        echo >&2 "unsupported architecture: ${arch}"
+        exit 1
+        ;;
+esac
+
+wget "https://storage.googleapis.com/dart-archive/channels/stable/release/latest/sdk/dartsdk-linux-${arch}-release.zip" -O dart.zip
+unzip dart.zip
+chmod a=u,go-w -R dart-sdk
+
+sudo mkdir /opt/dart
+sudo cp -R dart-sdk/. /opt/dart/.
+sudo ln -s /opt/dart/bin/dart /usr/local/bin/

test/formatters/samplecode/dart-format/in.dart

@@ -0,0 +1,27 @@
+void main() {
+	Function addNumbers = (
+        a,
+	    b
+    ) => print(a + b);
+	someOtherFunction("addNumbers",addNumbers);
+
+	var myFunc = taskToPerform();
+	print(myFunc(10));
+}
+
+void someOtherFunction(String
+    message,
+    Function myFunction)
+	{
+	print(message);
+	myFunction(
+        2,
+        4
+    );
+}
+
+Function taskToPerform() {
+	Function multiplyFour = (int number) => number*4;
+	return
+    multiplyFour;
+}

test/formatters/samplecode/dart-format/out.dart

@@ -0,0 +1,17 @@
+void main() {
+  Function addNumbers = (a, b) => print(a + b);
+  someOtherFunction("addNumbers", addNumbers);
+
+  var myFunc = taskToPerform();
+  print(myFunc(10));
+}
+
+void someOtherFunction(String message, Function myFunction) {
+  print(message);
+  myFunction(2, 4);
+}
+
+Function taskToPerform() {
+  Function multiplyFour = (int number) => number * 4;
+  return multiplyFour;
+}