Add rust lint and format hooks (#4)

Author: tateexon

.pre-commit-hooks.yaml

@@ -1,3 +1,4 @@
+# golang
 - id: go-lint
   name: lint golang files
   description: ensures golang code meets the configured lint criteria.
@@ -12,6 +13,22 @@
   language: script
   stages: [pre-push, manual]
   pass_filenames: false
+# rust
+- id: rust-lint
+  name: lint rust files
+  description: ensures rust code meets the configured lint criteria.
+  entry: pre-commit-hooks/rust-lint.sh
+  language: script
+  pass_filenames: false
+  stages: [pre-commit, pre-push, manual]
+- id: rust-fmt
+  name: format rust files
+  description: ensures rust code is formatted as the project expects.
+  entry: pre-commit-hooks/rust-fmt.sh
+  language: script
+  pass_filenames: false
+  stages: [pre-commit, pre-push, manual]
+# typos
 - id: detect-typos
   name: Check for typos
   description: Check the code for any typos

pre-commit-hooks/rust-fmt.sh

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+
+# Exit immediately if a command exits with a non-zero status
+set -e
+
+# Function to format rust code
+run_cargo_fmt() {
+    echo "Executing 'cargo fmt'"
+    cargo fmt
+}
+
+run_cargo_fmt
+
+# Utilize pre-commit's stash functionality to get a diff
+output=$(git diff --stat)
+
+if [ -z "$output" ]; then
+    echo "No changes in any files."
+else
+    echo "files that weren't formatted:"
+    echo "$output" | awk -F '|' '/\|/ { print $1 }'
+    exit 1
+fi

pre-commit-hooks/rust-lint.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+
+# Exit immediately if a command exits with a non-zero status.
+set -e
+
+# Function to run linters on the rust project
+run_linter() {
+    echo "Executing clippy"
+
+    # Run the linter and capture the exit status
+    set +e
+    cargo clippy -- -D warnings
+    local linting_result=$?
+    set -e
+
+    # Check the linter result and provide feedback
+    if [[ $linting_result -ne 0 ]]; then
+        echo -e "\e[31mNOK!\e[0m"
+        echo "Run 'cargo clippy -- -D warnings' and fix the issues"
+        exit 1
+    else
+        echo -e "\e[32mOK!\e[0m"
+    fi
+}
+
+run_linter