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Contents
module Vedeu
# Provides means to use templates with Vedeu.
module Templating
# preprocess
# takes a line at a time
# splits line into component parts e.g. text1, ruby, text1
# takes text1, adds to JSON stream
# processes ruby, adding to a new JSON stream
# takes text2, adds to a JSON stream
#
# process
# converts JSON streams into line/stream objects with correct attributes
#
# Pre-processes a template, to convert all lines and lines with directives
# into Vedeu::Streams.
#
class Preprocessor
# @param lines [Array<String>]
# @return [Array<Vedeu::Stream>]
def self.process(lines)
new(lines).process
end
# Returns a new instance of Vedeu::Templating::Preprocessor.
#
# @param lines [Array<String>]
# @return [Vedeu::Templating::Preprocessor]
def initialize(lines)
@lines = lines
end
# @return [Array<Vedeu::Stream>]
def process
lines.each_with_object([]) do |line, acc|
if line =~ markers?
code = line.gsub(markers, '').chomp
acc << Directive.process(code)
else
acc << Vedeu::Stream.new(value: line.chomp)
end
acc
end
end
protected
# @!attribute [r] lines
# @return [Array<String>]
attr_reader :lines
private
# Return a pattern to remove directive markers and spaces.
#
# @example
# line containing {{ or }}
#
# @return [Regexp]
def markers
/({{\s*|\s*}})/
end
# @example
# line contains {{ or }}
#
# @return [Regexp]
def markers?
/^\s*({{)(.*?)(}})$/
end
end # Preprocessor
end # Templating
end # Vedeu
Version data entries
4 entries across 4 versions & 1 rubygems