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module Compass
class Compiler
include Actions
attr_accessor :working_path, :from, :to, :options, :sass_options, :staleness_checker, :importer
def initialize(working_path, from, to, options)
self.working_path = working_path.to_s
self.from, self.to = File.expand_path(from), to
self.logger = options.delete(:logger)
sass_opts = options.delete(:sass) || {}
self.options = options
self.sass_options = options.dup
self.sass_options.delete(:quiet)
self.sass_options.update(sass_opts)
self.sass_options[:cache_location] ||= determine_cache_location
self.sass_options[:importer] = self.importer = Sass::Importers::Filesystem.new(from)
self.sass_options[:compass] ||= {}
self.sass_options[:compass][:logger] = self.logger
self.sass_options[:compass][:environment] = Compass.configuration.environment
self.staleness_checker = Sass::Plugin::StalenessChecker.new(sass_options)
end
def determine_cache_location
Compass.configuration.cache_path || Sass::Plugin.options[:cache_location] || File.join(working_path, ".sass-cache")
end
def sass_files(options = {})
exclude_partials = options.fetch(:exclude_partials, true)
@sass_files = self.options[:sass_files] || Dir.glob(separate("#{from}/**/#{'[^_]' if exclude_partials}*.s[ac]ss"))
end
def relative_stylesheet_name(sass_file)
sass_file[(from.length + 1)..-1]
end
def stylesheet_name(sass_file)
if sass_file.index(from) == 0
sass_file[(from.length + 1)..-6].sub(/\.css$/,'')
else
raise Compass::Error, "You must compile individual stylesheets from the project directory."
end
end
def css_files
@css_files ||= sass_files.map{|sass_file| corresponding_css_file(sass_file)}
end
def corresponding_css_file(sass_file)
"#{to}/#{stylesheet_name(sass_file)}.css"
end
def target_directories
css_files.map{|css_file| File.dirname(css_file)}.uniq.sort.sort_by{|d| d.length }
end
# Returns the sass file that needs to be compiled, if any.
def out_of_date?
sass_files.zip(css_files).each do |sass_filename, css_filename|
return sass_filename if needs_update?(css_filename, sass_filename)
end
false
end
def needs_update?(css_filename, sass_filename)
staleness_checker.stylesheet_needs_update?(css_filename, File.expand_path(sass_filename), importer)
end
# Determines if the configuration file is newer than any css file
def new_config?
config_file = Compass.detect_configuration_file
return false unless config_file
config_mtime = File.mtime(config_file)
css_files.each do |css_filename|
return config_file if File.exists?(css_filename) && config_mtime > File.mtime(css_filename)
end
nil
end
def clean!
remove options[:cache_location]
css_files.each do |css_file|
remove css_file
end
end
def run
failure_count = 0
if new_config?
# Wipe out the cache and force compilation if the configuration has changed.
remove options[:cache_location] if options[:cache_location]
options[:force] = true
end
# Make sure the target directories exist
target_directories.each {|dir| directory dir}
# Compile each sass file.
result = timed do
sass_files.zip(css_files).each do |sass_filename, css_filename|
begin
compile_if_required sass_filename, css_filename
rescue Sass::SyntaxError => e
failure_count += 1
handle_exception(sass_filename, css_filename, e)
end
end
end
if options[:time]
puts "Compilation took #{(result.__duration * 1000).round / 1000.0}s"
end
return failure_count
end
def compile_if_required(sass_filename, css_filename)
if should_compile?(sass_filename, css_filename)
compile sass_filename, css_filename
else
logger.record :unchanged, basename(sass_filename) unless options[:quiet]
end
end
def timed
start_time = Time.now
res = yield
end_time = Time.now
res.instance_variable_set("@__duration", end_time - start_time)
def res.__duration
@__duration
end
res
end
# Compile one Sass file
def compile(sass_filename, css_filename)
start_time = end_time = nil
css_content = logger.red do
timed do
engine(sass_filename, css_filename).render
end
end
duration = options[:time] ? "(#{(css_content.__duration * 1000).round / 1000.0}s)" : ""
write_file(css_filename, css_content, options.merge(:force => true, :extra => duration))
Compass.configuration.run_stylesheet_saved(css_filename)
end
def should_compile?(sass_filename, css_filename)
options[:force] || needs_update?(css_filename, sass_filename)
end
# A sass engine for compiling a single file.
def engine(sass_filename, css_filename)
syntax = (sass_filename =~ /\.(s[ac]ss)$/) && $1.to_sym || :sass
opts = sass_options.merge(:filename => sass_filename, :css_filename => css_filename, :syntax => syntax)
Sass::Engine.new(open(sass_filename).read, opts)
end
# Place the syntax error into the target css file,
# formatted to display in the browser (in development mode)
# if there's an error.
def handle_exception(sass_filename, css_filename, e)
exception_file = basename(e.sass_filename)
file = basename(sass_filename)
exception_file = nil if exception_file == file
formatted_error = "(Line #{e.sass_line}#{ " of #{exception_file}" if exception_file}: #{e.message})"
logger.record :error, file, formatted_error
Compass.configuration.run_stylesheet_error(sass_filename, formatted_error)
write_file css_filename, error_contents(e, sass_filename), options.merge(:force => true)
end
# Haml refactored this logic in 2.3, this is backwards compatibility for either one
def error_contents(e, sass_filename)
if Sass::SyntaxError.respond_to?(:exception_to_css)
e.sass_template = sass_filename
Sass::SyntaxError.exception_to_css(e, :full_exception => show_full_exception?)
else
Sass::Plugin.options[:full_exception] ||= show_full_exception?
Sass::Plugin.send(:exception_string, e)
end
end
# We don't want to show the full exception in production environments.
def show_full_exception?
Compass.configuration.environment == :development
end
end
end
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