From 8efb25a9d4e867b19d37fc114ef09874ff135d2c Mon Sep 17 00:00:00 2001
From: BrandonPacewic <92102436+BrandonPacewic@users.noreply.github.com>
Date: Sun, 1 Mar 2026 14:42:00 -0800
Subject: [PATCH] feat: pre commit

---
 .github/workflows/lint.yml | 30 ++++++++++---
 Makefile                   |  7 ++-
 scripts/lint.sh            | 89 ++++++++++++++++++++++++++++++++++++++
 scripts/pre-commit         |  3 ++
 4 files changed, 121 insertions(+), 8 deletions(-)
 create mode 100755 scripts/lint.sh
 create mode 100755 scripts/pre-commit

diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 53a0ffa..09e40f3 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -10,12 +10,28 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout Code
-        uses: actions/checkout@v3
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install dependencies
+        run: sudo apt-get install -y clang-format cmake ccache
+
+      - name: Restore ccache
+        uses: actions/cache@v4
         with:
-          fetch-depth: 0
+          path: ~/.cache/ccache
+          key: ccache-${{ runner.os }}-${{ hashFiles('cpl/inc/**', 'tests/**/*.cpp', 'CMakeLists.txt', 'cpl/CMakeLists.txt', 'tests/CMakeLists.txt') }}
+          restore-keys: ccache-${{ runner.os }}-
+
+      - name: Configure ccache
+        run: ccache --set-config max_size=500M
 
-      - name: Check Formatting
-        run: |
-          find cpl/inc cpl/src tests/cpl -regex '.*\.\(cpp\|h\|hpp\)' -exec clang-format -i --style=file {} +
-          git diff --exit-code || (echo 'Formatting issues found. Please run clang-format.' && exit 1)
+      - name: Run lint
+        run: scripts/lint.sh
+
+      - name: Save ccache
+        uses: actions/cache/save@v4
+        if: always()
+        with:
+          path: ~/.cache/ccache
+          key: ccache-${{ runner.os }}-${{ hashFiles('cpl/inc/**', 'tests/**/*.cpp', 'CMakeLists.txt', 'cpl/CMakeLists.txt', 'tests/CMakeLists.txt') }}
diff --git a/Makefile b/Makefile
index a96f156..d6f48be 100644
--- a/Makefile
+++ b/Makefile
@@ -19,7 +19,7 @@ CMAKE_FLAGS = \
   -DCMAKE_EXPORT_COMPILE_COMMANDS=$(COMPILE_COMMANDS)
 
 .PHONY: build test bench tools \
-        format clean distclean help
+        format install-hooks clean distclean help
 
 configure:
 	@mkdir -p "$(BUILD_DIR)"
@@ -53,6 +53,10 @@ tools: build
 format:
 	@clang-format -i -style=file $(shell git ls-files '*.hpp' '*.h' '*.cpp')
 
+install-hooks:
+	@ln -sf ../../scripts/pre-commit .git/hooks/pre-commit
+	@echo "Pre-commit hook installed"
+
 clean:
 	@cmake --build "$(BUILD_DIR)" --target clean || true
 
@@ -72,6 +76,7 @@ help:
 	@echo "  bench-out          - output the most recent benchmark run"
 	@echo "  tools              - build project-defined tools (BUILD_TOOLS=ON)"
 	@echo "  format             - run clang-format on all source files"
+	@echo "  install-hooks      - install pre-commit hook (calls scripts/lint.sh)"
 	@echo "  clean              - clean build artifacts"
 	@echo "  distclean          - clean entire build dir"
 	@echo ""
diff --git a/scripts/lint.sh b/scripts/lint.sh
new file mode 100755
index 0000000..c16be80
--- /dev/null
+++ b/scripts/lint.sh
@@ -0,0 +1,89 @@
+#!/usr/bin/env bash
+
+# Copyright (c) Brandon Pacewic
+# SPDX-License-Identifier: MIT
+
+set -e
+
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )"
+ROOT="$DIR/../"
+cd $ROOT
+
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+NC='\033[0m'
+
+FAILED=0
+FAST=0
+
+while [[ $# -gt 0 ]]; do
+	case $1 in
+		--fast)
+			FAST=1
+			shift
+			;;
+		*)
+			echo "Unknown option: $1"
+			echo "Usage: $0 [--fast]"
+			echo "  --fast         skip build and tests (format + file checks only)"
+			exit 1
+			;;
+	esac
+done
+
+function run_check() {
+	local name="$1"
+	local cmd="$2"
+
+	local name_len=${#name}
+	local dots_len=$((46 - name_len))
+	local dots=$(printf '%*s' "$dots_len" | tr ' ' '.')
+
+	printf "%s%s" "$name" "$dots"
+
+	set +e
+	log=$(eval "$cmd" 2>&1)
+	result=$?
+	set -e
+
+	if [[ $result -eq 0 ]]; then
+		echo -e "[${GREEN}ok${NC}]"
+	else
+		echo -e "[${RED}FAIL${NC}]"
+		echo "$log"
+		FAILED=1
+	fi
+}
+
+function check_large_files() {
+	local limit=$((250 * 1024))
+	local found=0
+	while IFS= read -r file; do
+		local size
+		size=$(wc -c < "$file")
+		if [[ "$size" -gt "$limit" ]]; then
+			echo "Large file ($(( size / 1024 ))KB): $file"
+			found=1
+		fi
+	done < <(git ls-files)
+	return "$found"
+}
+
+run_check "check_default_branch" "[[ \$(git rev-parse --abbrev-ref HEAD) != mega ]]"
+run_check "clang_format" "git ls-files '*.cpp' '*.h' '*.hpp' | xargs clang-format --dry-run --Werror"
+run_check "check_large_files" "check_large_files"
+run_check "check_merge_conflicts" "! git ls-files | xargs grep -lP '^(<{7}|={7}|>{7})' 2>/dev/null | grep -q ."
+
+if [[ "$FAST" -eq 0 ]]; then
+	run_check "build" \
+		"cmake -B build -DCMAKE_CXX_COMPILER_LAUNCHER=ccache -DBUILD_TESTING=ON -DCMAKE_BUILD_TYPE=Debug && cmake --build build -j\$(nproc)"
+    run_check "tests" "ctest --test-dir build --output-on-failure"
+fi
+
+echo ""
+if [[ $FAILED -eq 1 ]]; then
+	echo -e "${RED}Lint failed${NC}"
+	exit 1
+else
+	echo -e "${GREEN}All checks passed${NC}"
+fi
diff --git a/scripts/pre-commit b/scripts/pre-commit
new file mode 100755
index 0000000..1535e7b
--- /dev/null
+++ b/scripts/pre-commit
@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+set -e
+scripts/lint.sh