5 files changed, 135 insertions, 0 deletions
diff --git a/lib/puppet/functions/fact.rb b/lib/puppet/functions/fact.rb
new file mode 100644
index 0000000..dfb048b
--- /dev/null
+++ b/lib/puppet/functions/fact.rb
@@ -0,0 +1,58 @@
+# Digs into the facts hash using dot-notation
+#
+# Example usage:
+#
+#     fact('osfamily')
+#     fact('os.architecture')
+#
+# Array indexing:
+#
+#     fact('mountpoints."/dev".options.1')
+#
+# Fact containing a "." in the name:
+#
+#     fact('vmware."VRA.version"')
+#
+Puppet::Functions.create_function(:fact) do
+  dispatch :fact do
+    param 'String', :fact_name
+  end
+
+  def to_dot_syntax(array_path)
+    array_path.map do |string|
+      string.include?('.') ? %Q{"#{string}"} : string
+    end.join('.')
+  end
+
+  def fact(fact_name)
+    facts = closure_scope['facts']
+
+    # Transform the dot-notation string into an array of paths to walk. Make
+    # sure to correctly extract double-quoted values containing dots as single
+    # elements in the path.
+    path = fact_name.scan(/([^."]+)|(?:")([^"]+)(?:")/).map {|x| x.compact.first }
+
+    walked_path = []
+    path.reduce(facts) do |d, k|
+      return nil if d.nil? || k.nil?
+
+      case
+      when d.is_a?(Array)
+        begin
+          result = d[Integer(k)]
+        rescue ArgumentError => e
+          Puppet.warning("fact request for #{fact_name} returning nil: '#{to_dot_syntax(walked_path)}' is an array; cannot index to '#{k}'")
+          result = nil
+        end
+      when d.is_a?(Hash)
+        result = d[k]
+      else
+        Puppet.warning("fact request for #{fact_name} returning nil: '#{to_dot_syntax(walked_path)}' is not a collection; cannot walk to '#{k}'")
+        result = nil
+      end
+
+      walked_path << k
+      result
+    end
+  end
+end
diff --git a/lib/puppet/functions/length.rb b/lib/puppet/functions/length.rb
new file mode 100644
index 0000000..5ebd455
--- /dev/null
+++ b/lib/puppet/functions/length.rb
@@ -0,0 +1,14 @@
+#A function to eventually replace the old size() function for stdlib - The original size function did not handle Puppets new type capabilities, so this function is a Puppet 4 compatible solution. 
+Puppet::Functions.create_function(:length) do
+  dispatch :length do
+    param 'Variant[String,Array,Hash]', :value
+  end
+  def length(value)
+    if value.is_a?(String)
+      result = value.length
+    elsif value.is_a?(Array) || value.is_a?(Hash)
+      result = value.size
+    end
+    return result
+  end
+end
diff --git a/lib/puppet/functions/to_json.rb b/lib/puppet/functions/to_json.rb
new file mode 100644
index 0000000..782d695
--- /dev/null
+++ b/lib/puppet/functions/to_json.rb
@@ -0,0 +1,21 @@
+# Take a data structure and output it as JSON
+#
+# @example how to output JSON
+#   # output json to a file
+#     file { '/tmp/my.json':
+#       ensure  => file,
+#       content => to_json($myhash),
+#     }
+#
+#
+require 'json'
+
+Puppet::Functions.create_function(:to_json) do
+  dispatch :to_json do
+    param 'Any', :data
+  end
+
+  def to_json(data)
+    data.to_json
+  end
+end
diff --git a/lib/puppet/functions/to_json_pretty.rb b/lib/puppet/functions/to_json_pretty.rb
new file mode 100644
index 0000000..4c28539
--- /dev/null
+++ b/lib/puppet/functions/to_json_pretty.rb
@@ -0,0 +1,21 @@
+# Take a data structure and output it as pretty JSON
+#
+# @example how to output pretty JSON
+#   # output pretty json to a file
+#     file { '/tmp/my.json':
+#       ensure  => file,
+#       content => to_json_pretty($myhash),
+#     }
+#
+#
+require 'json'
+
+Puppet::Functions.create_function(:to_json_pretty) do
+  dispatch :to_json_pretty do
+    param 'Variant[Hash, Array]', :data
+  end
+
+  def to_json_pretty(data)
+    JSON.pretty_generate(data)
+  end
+end
diff --git a/lib/puppet/functions/to_yaml.rb b/lib/puppet/functions/to_yaml.rb
new file mode 100644
index 0000000..fdd7370
--- /dev/null
+++ b/lib/puppet/functions/to_yaml.rb
@@ -0,0 +1,21 @@
+# Take a data structure and output it as YAML
+#
+# @example how to output YAML
+#   # output yaml to a file
+#     file { '/tmp/my.yaml':
+#       ensure  => file,
+#       content => to_yaml($myhash),
+#     }
+#
+#
+require 'yaml'
+
+Puppet::Functions.create_function(:to_yaml) do
+  dispatch :to_yaml do
+    param 'Any', :data
+  end
+
+  def to_yaml(data)
+    data.to_yaml
+  end
+end