Script to get git contribution stats

git-contributions.sh

#!/bin/zsh

# Check if a repository path was provided
if [[ "$#" -ne 1 ]]; then
    echo "Usage: $0 /path/to/git/repo"
    exit 1
fi

# Assign the first argument to the variable 'repo_path'
repo_path="$1"

# Navigate to the specified Git repository directory
cd "$repo_path" || exit

# Optional: Specify the start date for filtering contributions
# Format: YYYY-MM-DD
# Uncomment and modify the line below to filter by date
since_date="--since=2023-01-01"

# Initialize associative arrays for author stats
typeset -A author_files
typeset -A author_insertions
typeset -A author_deletions

# Process each commit
git log --shortstat $since_date --pretty="%H|%an" | while read -r line; do
    if [[ $line =~ '^[0-9a-f]{40}\|' ]]; then
        current_author=${line#*|}
    elif [[ $line =~ ' files changed' ]]; then
        files_changed=$(echo $line | awk '{print $1}')
        insertions=$(echo $line | awk '/insertions/ {print $4}')
        deletions=$(echo $line | awk '/deletions/ {print $6}')
        author_files[$current_author]=$((author_files[$current_author] + files_changed))
        author_insertions[$current_author]=$((author_insertions[$current_author] + ${insertions:-0}))
        author_deletions[$current_author]=$((author_deletions[$current_author] + ${deletions:-0}))
    fi
done

# Output CSV header
echo "Author,Total Files Changed,Total Insertions,Total Deletions"

# Output the results in CSV format
for author in ${(k)author_files}; do
    echo "\"$author\",${author_files[$author]},${author_insertions[$author]},${author_deletions[$author]}"
done