YAML To XML / JSON / CSV Converter

Converting YAML to XML, JSON, and CSV can be done using various programming languages and tools. Below, I'll outline how you can achieve these conversions using Python, Node.js, and online tools.

1. Using Python
Python has libraries like PyYAML for YAML parsing and conversion, json for JSON, and csv for CSV. Below are the steps and example scripts to convert YAML to XML, JSON, and CSV.

YAML to JSON:
First, install the PyYAML library if it's not already installed:

bash

pip install pyyaml
Here's a Python script to convert YAML to JSON:

python

import yaml
import json

# Load the YAML data
with open('data.yaml', 'r') as yaml_file:
yaml_data = yaml.safe_load(yaml_file)

# Convert YAML data to JSON
json_data = json.dumps(yaml_data, indent=4)

# Save JSON data to a file
with open('output.json', 'w') as json_file:
json_file.write(json_data)

print("YAML data has been successfully converted to JSON.")
YAML to XML:
To convert YAML to XML, you can use the xml.etree.ElementTree module. Here's an example:

python

import yaml
import xml.etree.ElementTree as ET

# Load the YAML data
with open('data.yaml', 'r') as yaml_file:
yaml_data = yaml.safe_load(yaml_file)

# Convert YAML data to XML
def dict_to_xml(tag, d):
'''
Convert a dictionary to XML format
'''
result = list()
for key, value in d.items():
if isinstance(value, dict):
result.append(ET.Element(key, dict_to_xml(key, value)))
else:
result.append(ET.Element(key, value))
return result

root = ET.Element('root')
xml_tree = dict_to_xml('root', yaml_data)
tree = ET.ElementTree(root)

# Save XML data to a file
tree.write("output.xml")

print("YAML data has been successfully converted to XML.")
YAML to CSV:
To convert YAML data to CSV, you can use the csv module in Python. Here's an example:

python

import yaml
import csv

# Load the YAML data
with open('data.yaml', 'r') as yaml_file:
yaml_data = yaml.safe_load(yaml_file)

# Convert YAML to CSV (assuming the YAML is a list of dictionaries)
with open('output.csv', 'w', newline='') as csv_file:
writer = csv.DictWriter(csv_file, fieldnames=yaml_data[0].keys())
writer.writeheader()
writer.writerows(yaml_data)

print("YAML data has been successfully converted to CSV.")
2. Using Node.js
For JavaScript enthusiasts, Node.js with libraries like js-yaml for YAML parsing and json2xml for XML conversion will do the job.

Install the required packages:
bash

npm install js-yaml json2xml
Node.js Script for YAML to JSON, XML, and CSV:
javascript

const fs = require('fs');
const yaml = require('js-yaml');
const json2xml = require('json2xml');
const csvWriter = require('csv-write-stream');

// Read the YAML file
fs.readFile('data.yaml', 'utf8', (err, data) => {
if (err) {
console.error('Error reading YAML file:', err);
return;
}

// Parse YAML to JSON
const yamlData = yaml.load(data);
const jsonData = JSON.stringify(yamlData, null, 4);

// Save JSON data to a file
fs.writeFileSync('output.json', jsonData);
console.log('YAML data has been successfully converted to JSON.');

// Convert YAML to XML
const xmlData = json2xml({ root: yamlData });
fs.writeFileSync('output.xml', xmlData);
console.log('YAML data has been successfully converted to XML.');

// Convert YAML to CSV
const writer = csvWriter({ headers: Object.keys(yamlData[0]) });
writer.pipe(fs.createWriteStream('output.csv'));
yamlData.forEach(row => writer.write(row));
writer.end();
console.log('YAML data has been successfully converted to CSV.');
});
Explanation:
yaml.load(): Parses the YAML string into a JavaScript object.
JSON.stringify(): Converts the object into JSON format.
json2xml(): Converts the object into an XML string.
csv-write-stream: A simple library to write CSV files from arrays of objects.
3. Using Online Tools
If you're looking for quick conversions without writing any code, there are several online tools that can help you convert YAML to JSON, XML, and CSV.

YAML to JSON:
YAML to JSON Online Converter: Paste the YAML data, and it will generate the corresponding JSON.
YAML to XML:
YAML to XML Online Converter: Paste the YAML content, and the tool will output the equivalent XML.
YAML to CSV:
YAML to CSV Online Converter: Upload the YAML file or paste the data, and it will generate a CSV file.
4. Using Command-Line Tools
If you prefer a quick solution using the command line, there are utilities such as yq (a command-line YAML processor) that can be used to convert YAML data to JSON, XML, and CSV formats.

Convert YAML to JSON using yq:
bash

yq eval -o=json data.yaml > output.json
Convert YAML to CSV using yq:
bash

yq eval -o=csv data.yaml > output.csv
For XML conversion, you might need a combination of yq and other tools, like xmlstarlet, since yq does not directly support YAML to XML.

Summary of Methods:
Python:

Convert YAML to JSON using json.dumps().
Convert YAML to XML using a recursive function and xml.etree.ElementTree.
Convert YAML to CSV using csv.DictWriter().
Node.js:

Use js-yaml to load and parse YAML.
Convert YAML to JSON, XML (with json2xml), and CSV (using csv-write-stream).
Online Tools:

Quick conversion of YAML to JSON, XML, and CSV via online converters.
Command-Line Tools:

Use yq for YAML to JSON and CSV conversions.