add support for dart as a hook language

testing/gen-languages-all

@@ -2,9 +2,9 @@
 import sys
 
 LANGUAGES = [
-    'conda', 'coursier', 'docker', 'docker_image', 'dotnet', 'fail', 'golang',
-    'node', 'perl', 'pygrep', 'python', 'r', 'ruby', 'rust', 'script',
-    'swift', 'system',
+    'conda', 'coursier', 'dart', 'docker', 'docker_image', 'dotnet', 'fail',
+    'golang', 'node', 'perl', 'pygrep', 'python', 'r', 'ruby', 'rust',
+    'script', 'swift', 'system',
 ]
 FIELDS = [
     'ENVIRONMENT_DIR', 'get_default_version', 'healthy', 'install_environment',

testing/get-coursier.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 # This is a script used in CI to install coursier
-set -euxo pipefail
+set -euo pipefail
 
 COURSIER_URL="https://github.com/coursier/coursier/releases/download/v2.0.0/cs-x86_64-pc-linux"
 COURSIER_HASH="e2e838b75bc71b16bcb77ce951ad65660c89bda7957c79a0628ec7146d35122f"
@@ -11,3 +11,5 @@ rm -f "$ARTIFACT"
 curl --location --silent --output "$ARTIFACT" "$COURSIER_URL"
 echo "$COURSIER_HASH  $ARTIFACT" | sha256sum --check
 chmod ugo+x /tmp/coursier/cs
+
+echo '##vso[task.prependpath]/tmp/coursier'

testing/get-dart.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+VERSION=2.13.4
+
+if [ "$OSTYPE" = msys ]; then
+    URL="https://storage.googleapis.com/dart-archive/channels/stable/release/${VERSION}/sdk/dartsdk-windows-x64-release.zip"
+    echo "##vso[task.prependpath]$(cygpath -w /tmp/dart-sdk/bin)"
+else
+    URL="https://storage.googleapis.com/dart-archive/channels/stable/release/${VERSION}/sdk/dartsdk-linux-x64-release.zip"
+    echo '##vso[task.prependpath]/tmp/dart-sdk/bin'
+fi
+
+curl --silent --location --output /tmp/dart.zip "$URL"
+
+unzip -q -d /tmp /tmp/dart.zip
+rm /tmp/dart.zip

testing/get-swift.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 # This is a script used in CI to install swift
-set -euxo pipefail
+set -euo pipefail
 
 . /etc/lsb-release
 if [ "$DISTRIB_CODENAME" = "bionic" ]; then
@@ -25,3 +25,5 @@ fi
 
 mkdir -p /tmp/swift
 tar -xf "$TGZ" --strip 1 --directory /tmp/swift
+
+echo '##vso[task.prependpath]/tmp/swift/usr/bin'

testing/resources/dart_repo/.pre-commit-hooks.yaml

@@ -0,0 +1,4 @@
+-   id: hello-world-dart
+    name: hello world dart
+    entry: hello-world-dart
+    language: dart

testing/resources/dart_repo/bin/hello-world-dart.dart

@@ -0,0 +1,6 @@
+import 'package:ansicolor/ansicolor.dart';
+
+void main() {
+    AnsiPen pen = new AnsiPen()..red();
+    print("hello hello " + pen("world"));
+}

testing/resources/dart_repo/pubspec.yaml

@@ -0,0 +1,10 @@
+environment:
+  sdk: '>=2.10.0 <3.0.0'
+
+name: hello_world_dart
+
+executables:
+    hello-world-dart:
+
+dependencies:
+  ansicolor: ^2.0.1

testing/resources/dotnet_hooks_csproj_repo/.pre-commit-hooks.yaml

@@ -1,4 +1,4 @@
--   id: dotnet example hook
+-   id: dotnet-example-hook
     name: dotnet example hook
     entry: testeroni
     language: dotnet

testing/resources/dotnet_hooks_sln_repo/.pre-commit-hooks.yaml

@@ -1,4 +1,4 @@
--   id: dotnet example hook
+-   id: dotnet-example-hook
     name: dotnet example hook
     entry: testeroni
     language: dotnet