yaml to json | json to yaml

A_json_yaml_transform.md

These gists record how to transform between yaml and json files, using script languages.

json2yaml.py

import json
# pip3 install pyyaml
import yaml

# print to screen
with open('example.json') as file:
    o = json.load(file)
    print(yaml.dump(o))

json2yaml.rb

require 'json'
require 'yaml'

# print to screen
puts JSON.load('some.json').to_yaml
# or oneline shell:
# ruby -ryaml -rjson -e "puts JSON.load('some.json').to_yaml"

# write to file
=begin
thing = JSON.load('some.json')
File.open('some.yaml', 'w') do |f|
  f.write(thing.to_yaml)
end
=end

yaml2json.py

import json
# pip3 install pyyaml
import yaml

# print to screen
with open('example.yaml') as file:
    o = yaml.load(file, Loader=yaml.FullLoader)
    print(json.dumps(o, indent=2))

yaml2json.rb

# yaml to json
require 'yaml'
require 'json'

# print to screen
puts JSON.pretty_generate(YAML.load_file('some.yml'))
# or oneline shell:
# ruby -ryaml -rjson -e "puts JSON.pretty_generate(YAML.load_file('some.yml'))"

# write to file
=begin
thing = YAML.load_file('some.yml')
File.open('some.json', 'w') do |f|
  f.write(JSON.pretty_generate(thing))
end
=end

# convert all yaml files of a directory
=begin
Dir.glob('dir/*.yml') do |yml_name|
  json_name = yml_name.sub(/\.[^.]+\z/, ".json")
  File.open(json_name, 'w') do |f|
    f.write(JSON.pretty_generate(YAML.load_file(yml_name)))
  end
end
=end