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require 'rake-pipeline-web-filters/filter_with_dependencies' | ||
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module Rake::Pipeline::Web::Filters | ||
# A filter that compiles input files written in Jade | ||
# to HTML using the Jade compiler | ||
# | ||
# Requires node and https://npmjs.org/package/jade by | ||
# [sudo] npm install jade -g | ||
# | ||
# @example | ||
# !!!ruby | ||
# Rake::Pipeline.build do | ||
# input "app/assets", "**/*.jade" | ||
# output "public" | ||
# | ||
# # Compile each Jade file under the app/assets | ||
# # directory. | ||
# filter Rake::Pipeline::Web::Filters::JadeFilter | ||
# end | ||
# !!!ruby | ||
# Rake::Pipeline.build do | ||
# input "app/assets", "**/*.jade" | ||
# output "public" | ||
# | ||
# jade :pretty | ||
# end | ||
class JadeFilter < Rake::Pipeline::Filter | ||
include Rake::Pipeline::Web::Filters::FilterWithDependencies | ||
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# @return [Hash] a hash of options to pass to Less | ||
# when compiling. | ||
# @option option :prettify output | ||
attr_reader :options | ||
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def initialize(options={}, &block) | ||
block ||= proc { |input| input.sub(/\.(jade)$/, '.html') } | ||
super(&block) | ||
@options = options | ||
end | ||
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def generate_output(inputs, output) | ||
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inputs.each do |input| | ||
if options[:pretty] | ||
output.write `echo "#{input.read}" | jade -P` | ||
else | ||
output.write `echo "#{input.read}" | jade` | ||
end | ||
end | ||
end | ||
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private | ||
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def external_dependencies | ||
[ ] | ||
end | ||
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end | ||
end |
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describe "JadeFilter" do | ||
JadeFilter ||= Rake::Pipeline::Web::Filters::JadeFilter | ||
MemoryFileWrapper ||= Rake::Pipeline::SpecHelpers::MemoryFileWrapper | ||
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let(:jade_input) {""" | ||
!!! 5 | ||
html | ||
head | ||
title Hello | ||
body | ||
h1 Hello | ||
""" | ||
} | ||
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let(:expected_html_output) {"""<!DOCTYPE html><html><head><title>Hello</title></head><body><h1>Hello</h1></body></html>""" | ||
} | ||
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let(:expected_prettified_html_output) {"""\ | ||
<!DOCTYPE html> | ||
<html> | ||
<head> | ||
<title>Hello</title> | ||
</head> | ||
<body> | ||
<h1>Hello</h1> | ||
</body> | ||
</html>""" | ||
} | ||
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def input_file(name, content) | ||
MemoryFileWrapper.new("/path/to/input", name, "UTF-8", content) | ||
end | ||
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def output_file(name) | ||
MemoryFileWrapper.new("/path/to/output", name, "UTF-8") | ||
end | ||
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def setup_filter(filter, input=jade_input) | ||
filter.file_wrapper_class = MemoryFileWrapper | ||
filter.input_files = [input_file("index.jade", input)] | ||
filter.output_root = "/path/to/output" | ||
filter.rake_application = Rake::Application.new | ||
filter | ||
end | ||
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it "generates output" do | ||
filter = setup_filter JadeFilter.new | ||
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filter.output_files.should == [output_file("index.html")] | ||
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tasks = filter.generate_rake_tasks | ||
tasks.each(&:invoke) | ||
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file = MemoryFileWrapper.files["/path/to/output/index.html"] | ||
file.body.should == expected_html_output | ||
file.encoding.should == "UTF-8" | ||
end | ||
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it "prettifies output" do | ||
filter = setup_filter JadeFilter.new :pretty => true | ||
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filter.output_files.should == [output_file("index.html")] | ||
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tasks = filter.generate_rake_tasks | ||
tasks.each(&:invoke) | ||
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file = MemoryFileWrapper.files["/path/to/output/index.html"] | ||
file.body.should == expected_prettified_html_output | ||
file.encoding.should == "UTF-8" | ||
end | ||
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describe "naming output files" do | ||
it "translates .jade extensions to .html by default" do | ||
filter = setup_filter JadeFilter.new | ||
filter.output_files.first.path.should == "index.html" | ||
end | ||
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it "accepts a block to customize output file names" do | ||
filter = setup_filter(JadeFilter.new { |input| "hbs" }) | ||
filter.output_files.first.path.should == "hbs" | ||
end | ||
end | ||
end |