Files
claude-howto/06-hooks/format-code.sh
T
107153d5d7 fix(hooks): make hook scripts compatible with Windows Git Bash and use stdin JSON protocol (#49)
- Replace `grep -P` (Perl regex) with `sed` for JSON field extraction,
  as Windows Git Bash does not support `grep -P`
- Replace positional arg (`$1`) with stdin JSON parsing to match the
  actual Claude Code hook protocol (hooks receive data via stdin, not args)
- Fix JSON double-quote escaping in grep patterns that silently fails
  on Windows Git Bash
- Remove python3 dependency for JSON parsing, making scripts portable
- Add Windows Git Bash to compatibility notes in script headers

Affected scripts: security-scan.sh, validate-prompt.sh, log-bash.sh, format-code.sh

Co-authored-by: Bruce <binyuli1993@foxmail.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
2026-04-06 21:47:41 +02:00

50 lines
1.2 KiB
Bash

#!/bin/bash
# Auto-format code before writing
# Hook: PreToolUse:Write
#
# Reads the target file path from stdin JSON and runs the appropriate formatter.
# Outputs updatedInput to pass the formatted content back.
#
# Compatible with: macOS, Linux, Windows (Git Bash)
# Read JSON input from stdin (Claude Code hook protocol)
INPUT=$(cat)
# Extract file_path using sed (compatible with all platforms)
FILE_PATH=$(echo "$INPUT" | sed -n 's/.*"file_path"[[:space:]]*:[[:space:]]*"\([^"]*\)".*/\1/p' | head -1)
if [ -z "$FILE_PATH" ] || [ ! -f "$FILE_PATH" ]; then
exit 0
fi
# Detect file type and format accordingly
case "$FILE_PATH" in
*.js|*.jsx|*.ts|*.tsx)
if command -v prettier &> /dev/null; then
prettier --write "$FILE_PATH" 2>/dev/null
fi
;;
*.py)
if command -v black &> /dev/null; then
black "$FILE_PATH" 2>/dev/null
fi
;;
*.go)
if command -v gofmt &> /dev/null; then
gofmt -w "$FILE_PATH" 2>/dev/null
fi
;;
*.rs)
if command -v rustfmt &> /dev/null; then
rustfmt "$FILE_PATH" 2>/dev/null
fi
;;
*.java)
if command -v google-java-format &> /dev/null; then
google-java-format -i "$FILE_PATH" 2>/dev/null
fi
;;
esac
exit 0