Poshan Pandey
126 lines
3.8 KiB
Bash
126 lines
3.8 KiB
Bash
#!/bin/bash
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# Auto-formats files after Claude edits them.
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# Used as a PostToolUse hook for Edit|Write operations.
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# Auto-detects formatters — requires both the binary AND a config file to activate.
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# Requires jq for JSON parsing
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if ! command -v jq >/dev/null 2>&1; then
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exit 0
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fi
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INPUT=$(cat)
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FILE_PATH=$(echo "$INPUT" | jq -r '.tool_input.file_path // empty')
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if [ -z "$FILE_PATH" ] || [ ! -f "$FILE_PATH" ]; then
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exit 0
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fi
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EXTENSION="${FILE_PATH##*.}"
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FORMATTED=false
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# Find the project root (nearest directory with package.json, pyproject.toml, Cargo.toml, go.mod, or .git)
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find_project_root() {
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local dir="$PWD"
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while [ "$dir" != "/" ]; do
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if [ -f "$dir/package.json" ] || [ -f "$dir/pyproject.toml" ] || [ -f "$dir/Cargo.toml" ] || [ -f "$dir/go.mod" ] || [ -d "$dir/.git" ]; then
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echo "$dir"
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return
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fi
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dir=$(dirname "$dir")
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done
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echo "$PWD"
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}
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ROOT=$(find_project_root)
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# --- Biome (JS/TS all-in-one — check first, it's faster than Prettier) ---
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if [ "$FORMATTED" = false ] && [ -f "$ROOT/node_modules/.bin/biome" ] && [ -f "$ROOT/biome.json" -o -f "$ROOT/biome.jsonc" ]; then
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case "$EXTENSION" in
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js|jsx|ts|tsx|json|css)
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npx biome format --write "$FILE_PATH" 2>/dev/null && FORMATTED=true
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;;
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esac
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fi
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# --- Prettier (Node.js / TypeScript) ---
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if [ "$FORMATTED" = false ] && [ -f "$ROOT/node_modules/.bin/prettier" ]; then
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# Check for Prettier config (any common format)
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HAS_PRETTIER_CONFIG=false
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for cfg in .prettierrc .prettierrc.json .prettierrc.yml .prettierrc.yaml .prettierrc.js .prettierrc.cjs .prettierrc.mjs .prettierrc.toml prettier.config.js prettier.config.cjs prettier.config.mjs; do
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if [ -f "$ROOT/$cfg" ]; then
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HAS_PRETTIER_CONFIG=true
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break
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fi
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done
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# Also check package.json for "prettier" key
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if [ "$HAS_PRETTIER_CONFIG" = false ] && [ -f "$ROOT/package.json" ] && grep -q '"prettier"' "$ROOT/package.json" 2>/dev/null; then
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HAS_PRETTIER_CONFIG=true
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fi
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if [ "$HAS_PRETTIER_CONFIG" = true ]; then
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case "$EXTENSION" in
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js|jsx|ts|tsx|json|css|scss|md|yaml|yml|html)
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npx prettier --write "$FILE_PATH" 2>/dev/null && FORMATTED=true
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;;
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esac
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fi
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fi
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# --- Ruff (Python — modern replacement for Black + isort) ---
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if [ "$FORMATTED" = false ] && command -v ruff >/dev/null 2>&1; then
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HAS_RUFF_CONFIG=false
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if [ -f "$ROOT/ruff.toml" ] || [ -f "$ROOT/.ruff.toml" ]; then
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HAS_RUFF_CONFIG=true
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elif [ -f "$ROOT/pyproject.toml" ] && grep -q '\[tool\.ruff\]' "$ROOT/pyproject.toml" 2>/dev/null; then
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HAS_RUFF_CONFIG=true
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fi
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if [ "$HAS_RUFF_CONFIG" = true ]; then
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case "$EXTENSION" in
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py)
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ruff format "$FILE_PATH" 2>/dev/null
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ruff check --fix "$FILE_PATH" 2>/dev/null
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FORMATTED=true
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;;
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esac
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fi
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fi
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# --- Black + isort (Python — fallback if Ruff not configured) ---
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if [ "$FORMATTED" = false ] && command -v black >/dev/null 2>&1; then
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HAS_BLACK_CONFIG=false
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if [ -f "$ROOT/pyproject.toml" ] && grep -q '\[tool\.black\]' "$ROOT/pyproject.toml" 2>/dev/null; then
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HAS_BLACK_CONFIG=true
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fi
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if [ "$HAS_BLACK_CONFIG" = true ]; then
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case "$EXTENSION" in
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py)
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black --quiet "$FILE_PATH" 2>/dev/null
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command -v isort >/dev/null 2>&1 && isort --quiet "$FILE_PATH" 2>/dev/null
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FORMATTED=true
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;;
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esac
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fi
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fi
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# --- Rust (rustfmt is standard — no config check needed) ---
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if [ "$FORMATTED" = false ] && command -v rustfmt >/dev/null 2>&1; then
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case "$EXTENSION" in
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rs)
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rustfmt "$FILE_PATH" 2>/dev/null && FORMATTED=true
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;;
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esac
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fi
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# --- Go (gofmt is standard — no config check needed) ---
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if [ "$FORMATTED" = false ] && command -v gofmt >/dev/null 2>&1; then
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case "$EXTENSION" in
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go)
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gofmt -w "$FILE_PATH" 2>/dev/null && FORMATTED=true
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;;
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esac
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fi
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exit 0
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