This script exports the commit history of multiple repositories into a single output sorted by date. The output formats are: csv, gource and mp4.

commit_history_multirepo.sh

#!/bin/bash
################################################################################
#
#  This script exports the commit history of multiple repositories 
#   into a single output sorted by date. 
#   The output formats are: csv, gource and mp4.
#
#  Author: Pietro Arturo Panetta
#  Site: https://github.com/arturu
#  Copyright: @arturu 2024
#  License: AGPL-3.0-only
#
################################################################################

# Main path containing the repositories
ROOT_PATH="/absolute/path/to/repositories"

# Outpath
OUTPUT_PATH="/absolute/path/to/script_output_folder"

# Output file for the CSV
CSV_FILE="$OUTPUT_PATH/cronologia_commits.csv"

# Output file for Gource logs
COMBINED_LOG="$OUTPUT_PATH/gource_combined.txt"

# Create the output directory if it doesn't exist
mkdir -p "$OUTPUT_PATH"

# Navigate to the main directory
cd "$ROOT_PATH" || exit

# Ask the user if they want to perform git pull
read -rp "Do you want to perform git pull for all repositories? (y/n): " do_pull

# Ask the user what to do with Gource
echo -e "\nWhat would you like to do with Gource after the script finishes?"
echo "1) Exit"
echo "2) Launch Gource"
echo "3) Export a video with Gource"
read -rp "Select an option (1/2/3): " gource_action

# Clear existing output files without deleting them
> "$CSV_FILE"
> "$COMBINED_LOG"

# Iterate through each directory
for dir in */; do
    if [ -d "$dir/.git" ]; then
        REPO_NAME=${dir%/} # Repository name
        echo "Processing $REPO_NAME..."

        cd "$dir" || continue

        # Perform git pull if requested
        if [[ "$do_pull" == "y" ]]; then
            echo "Performing git pull for $REPO_NAME..."
            git pull --quiet
        fi

        # Extract commits for the CSV
        git log --pretty=format:"$REPO_NAME,%h,%ad,%an,\"%s\"" --date=iso >> "$CSV_FILE"
        echo "" >> "$CSV_FILE"

        # Generate custom log for Gource
        echo "Generating log for Gource..."
        gource --output-custom-log "$OUTPUT_PATH/gource_${REPO_NAME}.txt" .

        # Add the repository prefix to Gource log
        sed -i -r "s#(.+)\|#\1|/$REPO_NAME#" "$OUTPUT_PATH/gource_${REPO_NAME}.txt"

        # Return to the main directory
        cd ..
    fi
done

# Merge and sort Gource logs
echo "Merging and sorting Gource logs..."
cat "$OUTPUT_PATH"/gource_*.txt | sort -n > "$COMBINED_LOG"

# Sort commits chronologically in the CSV file
sort -t ',' -k3,3 "$CSV_FILE" -o "$CSV_FILE"

echo "Commit log exported to $CSV_FILE."
echo "Combined log for Gource generated in $COMBINED_LOG."

# Final actions with Gource
case $gource_action in
    1)
        echo "Exiting the script. Goodbye!"
        exit 0
        ;;
    2)
        # Check if Gource is installed
        if ! command -v gource &> /dev/null; then
            echo "Error: Gource is not installed. Please install it before using this option."
            exit 1
        fi
        echo "Launching Gource..."
        gource --seconds-per-day 1 "$COMBINED_LOG"
        exit 0
        ;;
    3)
        # Check if FFmpeg is installed
        if ! command -v ffmpeg &> /dev/null; then
            echo "Error: FFmpeg is not installed. Please install it before exporting a video."
            exit 1
        fi
        echo "Exporting video with Gource..."
        gource --output-ppm-stream - "$COMBINED_LOG" | \
            ffmpeg -y -r 60 -f image2pipe -vcodec ppm -i - -vcodec libx264 -preset ultrafast -crf 1 -threads 0 "$OUTPUT_PATH/gource_video.mp4"
        echo "Video exported to $OUTPUT_PATH/gource_video.mp4."
        exit 0
        ;;
    *)
        echo "Invalid choice. Exiting."
        exit 1
        ;;
esac