Gofmt pre-commit hook

README.md

Gofmt Pre-commit Hook

A shell script to check and format only the staged .go files before committing. If any staged Go files are not properly formatted, it automatically formats them using gofmt, lists the affected files, and prevents the commit so you can stage the changes and try again.

Save this script as .git/hooks/pre-commit and give it execute permission.

pre-commit

#!/usr/bin/sh

# Check and format staged Go files using gofmt

echo "================="
echo "Checking staged Go files..."
# Get staged files
staged_files=$(git diff --cached --name-only --diff-filter=ACM | grep '\.go$')

if [ -z "$staged_files" ]; then
    echo "No staged Go files to check."
    echo "================="
    exit 0
fi

# Check formatting
unformatted=""
for file in $staged_files; do
    if [ -f "$file" ]; then
        if [ -n "$(gofmt -l "$file")" ]; then
            unformatted="$unformatted $file"
        fi
    fi
done

if [ -n "$unformatted" ]; then
    echo "The following staged Go files are not formatted:"
    for file in $unformatted; do
        echo "$file"
        gofmt -w "$file"
    done
    echo "Files have been formatted. Please stage the changes and commit again."
    echo "================="
    exit 1
else
    echo "All staged Go files are properly formatted."
    echo "================="
    exit 0
fi