From 63e5acc91fb0f760dcc2ee0250efec8892b5778d Mon Sep 17 00:00:00 2001
From: Joshua Potter <jrpotter2112@gmail.com>
Date: Thu, 23 Nov 2023 08:21:50 -0700
Subject: [PATCH] Add automatic, configured formatting.

---
 .clang-format        |  6 ++++++
 .envrc               |  4 ++++
 .githooks/pre-commit | 13 +++++++++++++
 README.md            | 16 ++++++++++++++++
 4 files changed, 39 insertions(+)
 create mode 100644 .clang-format
 create mode 100755 .githooks/pre-commit

diff --git a/.clang-format b/.clang-format
new file mode 100644
index 0000000..b7d6df4
--- /dev/null
+++ b/.clang-format
@@ -0,0 +1,6 @@
+BasedOnStyle: LLVM
+AlignAfterOpenBracket: BlockIndent
+BinPackArguments: false
+BinPackParameters: false
+ContinuationIndentWidth: 2
+IndentWidth: 2
diff --git a/.envrc b/.envrc
index b9238c3..817939c 100644
--- a/.envrc
+++ b/.envrc
@@ -1,3 +1,7 @@
 #!/usr/bin/env bash
 
+if command -v git > /dev/null && on_git_branch; then
+  git config --local core.hooksPath .githooks/
+fi
+
 use flake
diff --git a/.githooks/pre-commit b/.githooks/pre-commit
new file mode 100755
index 0000000..63c3492
--- /dev/null
+++ b/.githooks/pre-commit
@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+set -e
+
+filesToFormat=$(
+  git --no-pager diff --name-status --no-color --cached | \
+    awk '$1 != "D" && $2 ~ /\.c\|\.h/ {print $NF}'
+)
+
+for path in $filesToFormat
+do
+  clang-format -i "$path"
+  git add "$path"
+done;
diff --git a/README.md b/README.md
index 5ab1f3a..f6974d0 100644
--- a/README.md
+++ b/README.md
@@ -26,3 +26,19 @@ include:
 Once all prompts are evaluated, the keys of the object are converted into
 uppercase environment variables and passed to the `run.sh` file relative to the
 current directory.
+
+## Development
+
+This template includes an `.envrc` file for use with [direnv](https://direnv.net/).
+
+### Formatting
+
+A `pre-commit` file is included in `.githooks` to ensure consistent formatting.
+Run the following to configure `git` to use it:
+
+```bash
+git config --local core.hooksPath .githooks/
+```
+
+If running [direnv](https://direnv.net/), this is done automatically provided
+`git` is installed and a repository is initialized.