Nest ingested data recursively (#45)

* Adds a nested duplicate structure inside ingested data object

* Due to an apparent limitation in Liquid, in order to access
top-tier variables during parse operations, we need to grant
those variables a parent scope to reference. This patch
leaves existing variables intact but adds a container scope
called 'data', which contains an exact replica of all the
data ingested from an external file.

* Also adds a regexreplace filter to Liquid, which does what
you'd expect.

* Bump version

lib/liquidoc.rb

@@ -664,16 +664,18 @@ def parse_regex data_file, pattern
 
 # Parse given data using given template, generating given output
 def liquify datasrc, template_file, output, variables=nil
-  data = get_data(datasrc)
+  input = get_data(datasrc)
+  nested = { "data" => get_data(datasrc)}
+  input.merge!nested
   validate_file_input(template_file, "template")
   if variables
     vars = { "vars" => variables }
-    data.merge!vars
+    input.merge!vars
   end
   begin
     template = File.read(template_file) # reads the template file
     template = Liquid::Template.parse(template) # compiles template
-    rendered = template.render(data) # renders the output
+    rendered = template.render(input) # renders the output
   rescue Exception => ex
     message = "Problem rendering Liquid template. #{template_file}\n" \
       "#{ex.class} thrown. #{ex.message}"
@@ -1010,6 +1012,10 @@ def slugify input
     s
   end
 
+  def regexreplace input, regex, replacement=''
+    input.to_s.gsub(Regexp.new(regex), replacement.to_s)
+  end
+
 end
 
 # register custom Liquid filters

lib/liquidoc/version.rb

@@ -1,3 +1,3 @@
 module Liquidoc
-  VERSION = "0.8.0"
+  VERSION = "0.8.1"
 end