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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 | # frozen_string_literal: false
##
# The YAML module is an alias of Psych, the YAML engine for Ruby.
begin
require 'psych'
rescue LoadError
warn "It seems your ruby installation is missing psych (for YAML output).\n" \
"To eliminate this warning, please install libyaml and reinstall your ruby.\n",
uplevel: 1
raise
end
YAML = Psych # :nodoc:
# YAML Ain't Markup Language
#
# This module provides a Ruby interface for data serialization in YAML format.
#
# The underlying implementation is the libyaml wrapper Psych.
#
# == Usage
#
# Working with YAML can be very simple, for example:
#
# require 'yaml'
# # Parse a YAML string
# YAML.load("--- foo") #=> "foo"
#
# # Emit some YAML
# YAML.dump("foo") # => "--- foo\n...\n"
# { :a => 'b'}.to_yaml # => "---\n:a: b\n"
#
# == Security
#
# Do not use YAML to load untrusted data. Doing so is unsafe and could allow
# malicious input to execute arbitrary code inside your application. Please see
# doc/security.rdoc for more information.
#
# == History
#
# Syck was the original for YAML implementation in Ruby's standard library
# developed by why the lucky stiff.
#
# You can still use Syck, if you prefer, for parsing and emitting YAML, but you
# must install the 'syck' gem now in order to use it.
#
# In older Ruby versions, ie. <= 1.9, Syck is still provided, however it was
# completely removed with the release of Ruby 2.0.0.
#
# == More info
#
# For more advanced details on the implementation see Psych, and also check out
# http://yaml.org for spec details and other helpful information.
#
# Psych is maintained by Aaron Patterson on github: https://github.com/tenderlove/psych
#
# Syck can also be found on github: https://github.com/tenderlove/syck
module YAML
end
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