6 files changed, 139 insertions, 0 deletions
diff --git a/lib/leap_cli/core_ext/boolean.rb b/lib/leap_cli/core_ext/boolean.rb
new file mode 100644
index 0000000..9b617b2
--- /dev/null
+++ b/lib/leap_cli/core_ext/boolean.rb
@@ -0,0 +1,14 @@
+#
+# make is_a?(Boolean) possible.
+#
+
+module Boolean
+end
+
+class TrueClass
+  include Boolean
+end
+
+class FalseClass
+  include Boolean
+end
+\ No newline at end of file
diff --git a/lib/leap_cli/core_ext/hash.rb b/lib/leap_cli/core_ext/hash.rb
new file mode 100644
index 0000000..7df33b2
--- /dev/null
+++ b/lib/leap_cli/core_ext/hash.rb
@@ -0,0 +1,35 @@
+class Hash
+
+  ##
+  ## CONVERTING
+  ##
+
+  #
+  # convert self into a hash, but only include the specified keys
+  #
+  def pick(*keys)
+    keys.map(&:to_s).inject({}) do |hsh, key|
+      if has_key?(key)
+        hsh[key] = self[key]
+      end
+      hsh
+    end
+  end
+
+  #
+  # recursive merging (aka deep merge)
+  # taken from ActiveSupport::CoreExtensions::Hash::DeepMerge
+  #
+  def deep_merge(other_hash)
+    self.merge(other_hash) do |key, oldval, newval|
+      oldval = oldval.to_hash if oldval.respond_to?(:to_hash)
+      newval = newval.to_hash if newval.respond_to?(:to_hash)
+      oldval.class.to_s == 'Hash' && newval.class.to_s == 'Hash' ? oldval.deep_merge(newval) : newval
+    end
+  end
+
+  def deep_merge!(other_hash)
+    replace(deep_merge(other_hash))
+  end
+
+end
diff --git a/lib/leap_cli/core_ext/json.rb b/lib/leap_cli/core_ext/json.rb
new file mode 100644
index 0000000..1a82bd9
--- /dev/null
+++ b/lib/leap_cli/core_ext/json.rb
@@ -0,0 +1,42 @@
+module JSON
+  #
+  # Output JSON from ruby objects in such a manner that all the hashes and arrays are output in alphanumeric sorted order.
+  # This is required so that our generated configs don't throw puppet or git for a tizzy fit.
+  #
+  # Beware: some hacky stuff ahead.
+  #
+  # This relies on the pure ruby implementation of JSON.generate (i.e. require 'json/pure')
+  # see https://github.com/flori/json/blob/master/lib/json/pure/generator.rb
+  #
+  # The Oj way that we are not using: Oj.dump(obj, :mode => :compat, :indent => 2)
+  #
+  def self.sorted_generate(obj)
+    # modify hash and array
+    Array.class_eval do
+      alias_method :each_without_sort, :each
+      def each(&block)
+        sorted = sort {|a,b| a.to_s <=> b.to_s }
+        for i in 0..(sorted.length-1) do
+          yield sorted[i]
+        end
+      end
+    end
+    Hash.class_eval do
+      alias_method :each_without_sort, :each
+      def each(&block)
+        self.keys.each do |key|
+          yield key, self.fetch(key) # fetch is used so we don't trigger Config::Object auto-eval
+        end
+      end
+    end
+
+    # generate json
+    json_str = JSON.pretty_generate(obj)
+
+    # restore hash and array
+    Hash.class_eval  {alias_method :each, :each_without_sort}
+    Array.class_eval {alias_method :each, :each_without_sort}
+
+    return json_str
+  end
+end
diff --git a/lib/leap_cli/core_ext/nil.rb b/lib/leap_cli/core_ext/nil.rb
new file mode 100644
index 0000000..05ca98f
--- /dev/null
+++ b/lib/leap_cli/core_ext/nil.rb
@@ -0,0 +1,5 @@
+class NilClass
+  def any?
+    false
+  end
+end
+\ No newline at end of file
diff --git a/lib/leap_cli/core_ext/string.rb b/lib/leap_cli/core_ext/string.rb
new file mode 100644
index 0000000..07af8e5
--- /dev/null
+++ b/lib/leap_cli/core_ext/string.rb
@@ -0,0 +1,14 @@
+#
+# make ruby 1.9 act more like ruby 1.8
+#
+unless String.method_defined?(:to_a)
+  class String
+    def to_a; [self]; end
+  end
+end
+
+unless String.method_defined?(:any?)
+  class String
+    def any?; self.chars.any?; end
+  end
+end
diff --git a/lib/leap_cli/core_ext/yaml.rb b/lib/leap_cli/core_ext/yaml.rb
new file mode 100644
index 0000000..bb0b5c9
--- /dev/null
+++ b/lib/leap_cli/core_ext/yaml.rb
@@ -0,0 +1,29 @@
+class Object
+  #
+  # ya2yaml will output hash keys in sorted order, but it outputs arrays
+  # in natural order. This new method, sorted_ya2yaml(), is the same as
+  # ya2yaml but ensures that arrays are sorted.
+  #
+  # This is important so that the .yaml files don't change each time you recompile.
+  #
+  # see https://github.com/afunai/ya2yaml/blob/master/lib/ya2yaml.rb
+  #
+  def sorted_ya2yaml(options = {})
+    # modify array
+    Array.class_eval do
+      alias_method :collect_without_sort, :collect
+      def collect(&block)
+        sorted = sort {|a,b| a.to_s <=> b.to_s}
+        sorted.collect_without_sort(&block)
+      end
+    end
+
+    # generate yaml
+    yaml_str = self.ya2yaml(options)
+
+    # restore array
+    Array.class_eval {alias_method :collect, :collect_without_sort}
+
+    return yaml_str
+  end
+end