Git Report

A Go CLI tool that analyzes git commit history across all local branches and exports the data to CSV format for reporting and analysis purposes.

Features

• Multi-branch Analysis: Scans all local git branches automatically
• Date Range Filtering: Filter commits by date range with flexible date formats
• Author Filtering: Filter commits by specific authors (supports multiple authors)
• CSV Export: Clean, structured CSV output with comprehensive commit data
• Detailed Information: Includes commit hash, author, date, message, and file change statistics

Installation

From Source

git clone https://github.com/djoufson/git-report.git
cd git-report
go build -o git-report ./cmd/git-report

Using Go Install

go install github.com/djoufson/git-report/cmd/git-report@latest

Usage

Basic Usage

Generate a report for all commits in the last 30 days:

./git-report

Advanced Usage

# Filter by date range
./git-report --since "2023-01-01" --until "2023-12-31"

# Filter by specific authors
./git-report --author "john.doe@company.com" --author "jane.smith"

# Analyze specific branches only
./git-report --branches "main" --branches "develop"

# Custom output file with verbose logging
./git-report --output reports/team-activity.csv --verbose

# Combine filters
./git-report --since "2023-06-01" --author "john" --output june-john.csv

# Analyze different repository
./git-report --repo-path /path/to/other/repo --output other-repo.csv

# Use relative path
./git-report --repo-path ../sibling-project --verbose

Command Line Options

Flag	Short	Description	Example
--output	-o	Output CSV file path	--output report.csv
--since	-s	Start date (YYYY-MM-DD)	--since "2023-01-01"
--until	-u	End date (YYYY-MM-DD)	--until "2023-12-31"
--author	-a	Filter by author (can specify multiple)	--author "john@example.com"
--branches	-b	Specific branches to analyze	--branches "main"
--repo-path	-r	Path to git repository	--repo-path /path/to/repo
--verbose	-v	Enable verbose output	--verbose
--help	-h	Show help information	--help

CSV Output Format

The generated CSV file contains the following columns:

Column	Description
Branch	Git branch name
Commit Hash	Full commit hash
Short Hash	Abbreviated commit hash
Author	Commit author name
Email	Commit author email
Date	Commit date and time
Message	Commit message
Files Changed	Number of files modified
Lines Added	Total lines added
Lines Deleted	Total lines deleted

Development

Requirements

• Go 1.22 or later
• Git installed and available in PATH

Building

go mod tidy
go build -o git-report ./cmd/git-report

Testing

go test ./...

Project Structure

git-report/
├── cmd/git-report/     # Main application entry point
├── pkg/
│   ├── git/           # Git log parsing functionality
│   ├── csv/           # CSV export functionality
│   └── filter/        # Commit filtering logic
├── internal/
│   ├── models/        # Data models
│   └── config/        # Configuration structures
└── docs/              # Documentation

Examples

Team Activity Report

Generate a quarterly report for your development team:

./git-report \
  --since "2023-07-01" \
  --until "2023-09-30" \
  --output quarterly-report.csv \
  --verbose

Individual Developer Analysis

Analyze commits from a specific developer:

./git-report \
  --author "jane.smith@company.com" \
  --since "2023-06-01" \
  --output jane-commits.csv

Release Preparation

Get commits from specific branches for release notes:

./git-report \
  --branches "release/v1.0" \
  --branches "main" \
  --since "2023-08-01" \
  --output release-commits.csv

Multi-Repository Analysis

Analyze commits across different repositories:

# Generate reports for multiple repositories
./git-report --repo-path /path/to/frontend --output frontend-report.csv
./git-report --repo-path /path/to/backend --output backend-report.csv
./git-report --repo-path /path/to/mobile --output mobile-report.csv

Error Handling

The tool provides clear error messages for common issues:

• Not a git repository: Ensure you're running the command in a git repository
• Invalid date format: Use YYYY-MM-DD format for dates
• No commits found: Check your date range and author filters
• Permission issues: Ensure write permissions for the output directory

License

This project is open source and available under the MIT License.