Add Commit hook install script

DuckDuckGo.xcodeproj/project.pbxproj

@@ -5690,7 +5690,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "if [[ -n \"$CI\" ]] || [[ -n \"$BITRISE_IO\" ]]; then\n    echo \"Skipping SwiftLint run in CI\"\n    exit 0\nfi\n\nif test -d \"/opt/homebrew/bin/\"; then\n    PATH=\"/opt/homebrew/bin/:${PATH}\"\nfi\n\nif test -d \"$HOME/.mint/bin/\"; then\n    PATH=\"$HOME/.mint/bin/:${PATH}\"\nfi\n\nexport PATH\n\nif which swiftlint >/dev/null; then\n   if [ \"$CONFIGURATION\" = \"Release\" ]; then\n       swiftlint lint --strict\n       if [ $? -ne 0 ]; then\n           echo \"error: SwiftLint validation failed.\"\n           exit 1\n       fi\n   else\n       swiftlint lint\n   fi\nelse\n   echo \"error: SwiftLint not installed. Install using \\`brew install swiftlint\\`\"\n   exit 1\nfi\n";
+			shellScript = "./lint.sh\n";
 		};
 		98B0CE69251C937D003FB601 /* Update Localizable.strings */ = {
 			isa = PBXShellScriptBuildPhase;

lint.sh

@@ -0,0 +1,44 @@
+#!/bin/bash
+
+FIX=false
+
+if [[ "$1" == "--fix" ]]; then
+    FIX=true
+fi
+
+if [[ -n "$CI" ]] || [[ -n "$BITRISE_IO" ]]; then
+    echo "Skipping SwiftLint run in CI"
+    exit 0
+fi
+
+# Add brew into PATH
+if [[ -f /opt/homebrew/bin/brew ]]; then
+    eval $(/opt/homebrew/bin/brew shellenv)
+fi
+
+if test -d "$HOME/.mint/bin/"; then
+    PATH="$HOME/.mint/bin/:${PATH}"
+fi
+
+export PATH
+
+
+SWIFTLINT_COMMAND="swiftlint lint"
+if $FIX; then
+    SWIFTLINT_COMMAND="swiftlint lint --fix"
+fi
+
+if which swiftlint >/dev/null; then
+   if [ "$CONFIGURATION" = "Release" ]; then
+       $SWIFTLINT_COMMAND --strict
+       if [ $? -ne 0 ]; then
+           echo "error: SwiftLint validation failed."
+           exit 1
+       fi
+   else
+       $SWIFTLINT_COMMAND
+   fi
+else
+   echo "error: SwiftLint not installed. Install using \`brew install swiftlint\`"
+   exit 1
+fi

scripts/pre-commit.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+SCRIPT_URL="https://raw.githubusercontent.com/duckduckgo/BrowserServicesKit/main/scripts/pre-commit.sh"
+curl -s "${SCRIPT_URL}" | bash -s -- "$@"