Data Format Converter CLI Tool

A CLI tool that converts between JSON, YAML, TOML, and CSV formats with validation, syntax highlighting, and an interactive TUI mode.

Features

• Multi-format conversion (JSON, YAML, TOML, CSV)
• Syntax validation with detailed error reporting
• Syntax highlighting using Rich library
• Interactive TUI mode for data viewing and editing
• File watching for live conversions
• Stdin/stdout support for piping

Installation

pip install data-format-converter

Or from source:

git clone https://7000pct.gitea.bloupla.net/7000pctAUTO/data-format-converter.git
cd data-format-converter
pip install -e .

Quick Start

Convert a JSON file to YAML:

dfc convert input.json -to yaml -o output.yaml

Convert CSV to JSON:

dfc convert data.csv -to json -o data.json

Validate a file:

dfc validate config.yaml

Interactive mode:

dfc tui config.json

Watch file for changes:

dfc watch input.yaml -to json -o output/

Usage

Usage: dfc [OPTIONS] COMMAND [ARGS]...

Commands

• convert: Convert between data formats
• validate: Validate syntax of data files
• tui: Launch interactive TUI mode
• watch: Watch files for changes and auto-convert
• info: Show information about supported formats

Options

• --help: Show help message
• --theme: Set syntax highlighting theme (default, monokai, github-dark, github-light, dracula, nord, one-dark)

Examples

Basic Conversion

# JSON to YAML
dfc convert config.json -to yaml -o config.yaml

# YAML to TOML
dfc convert settings.yaml -to toml -o settings.toml

# CSV to JSON
dfc convert data.csv -to json -o data.json

# JSON to CSV
dfc convert data.json -to csv -o data.csv

Piping

# Read from stdin, write to stdout
cat config.json | dfc convert -f json -to yaml

# Use - for stdin/stdout
dfc convert input.yaml -to json - < input.yaml

Validation

# Validate a single file
dfc validate config.json

# Validate with detailed output
dfc validate --verbose config.yaml

# Validate from stdin
dfc validate --stdin --format json < config.json

Interactive Mode

# Open file in interactive viewer
dfc tui config.json

# Open with custom theme
dfc tui config.json --theme monokai

File Watching

# Watch a single file
dfc watch input.json -to yaml -o output/

# Watch multiple files (glob pattern)
dfc watch "*.json" -to yaml -o output/

File Formats

Format	Extension	Read	Write
JSON	.json	✓	✓
YAML	.yaml, .yml	✓	✓
TOML	.toml	✓	✓
CSV	.csv	✓	✓

Interactive Mode Controls

• Arrow keys: Navigate
• edit : Edit a value
• add : Add a new key
• delete : Delete a key
• show: Show current data
• save: Save changes
• quit: Exit without saving
• help: Show help

Configuration

Create a config.toml file in your home directory or specify with --config:

[default]
output_dir = "./output"
theme = "github-dark"

[convert]
indent = 2

[validate]
strict = false

Development

# Install in development mode
pip install -e ".[dev]"

# Run tests
pytest tests/ -v

# Run linter
ruff check .

Contributing

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Run tests: pytest tests/ -v
5. Submit a pull request

License

MIT License