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Prevent less.rb to process the same files repeatedly

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This commit is contained in:
Saivann 2013-10-22 04:55:54 -04:00
parent 6f034e71fb
commit 15790cb918
1 changed files with 36 additions and 37 deletions
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73
_plugins/less.rb
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@ -16,51 +16,50 @@ module Jekyll
def render(context)
site = context.registers[:site]
config = context.registers[:site].config
if !config.has_key?('lessdone')
config['lessdone'] = {}
end
less_dir = File.join(site.source, '_less')
if File.symlink?(less_dir)
return "LessCSS directory '#{less_dir}' cannot be a symlink"
end
if @file !~ /^[a-zA-Z0-9_\/\.-]+$/ || @file =~ /\.\// || @file =~ /\/\./
return "LessCSS file '#{@file}' contains invalid characters or sequences"
end
Dir.chdir(less_dir) do
choices = Dir['**/*'].reject { |x| File.symlink?(x) }
if choices.include?(@file)
if /\.css$/.match(@file)
f = file = File.new(@file, "r")
#Process file only if it hasn't been processed yet
if !config['lessdone'].has_key?(@file)
Dir.chdir(less_dir) do
choices = Dir['**/*'].reject { |x| File.symlink?(x) }
if choices.include?(@file)
#Generate file content with less, those that end with .css
if /\.css$/.match(@file)
f = file = File.new(@file, "r")
else
source = File.read(@file)
f = IO.popen("lessc -", "w+")
f.write(source)
f.close_write()
end
#Keep MD5 hash of the file as the file name
css = f.readlines().join()
digest = Digest::MD5.hexdigest(css)
css_file = digest + ".css"
css_path = File.join(site.dest, css_file)
#Write final file
if !File.directory?(site.dest)
Dir.mkdir(site.dest)
end
File.open(css_path, "w") do |f|
f.write(css)
end
site.static_files << LessCSSFile.new(site, site.source, '', css_file)
#Save the filename so the file isn't processed again
config['lessdone'][@file] = css_file
else
source = File.read(@file)
f = IO.popen("lessc -", "w+")
f.write(source)
f.close_write()
return "LessCSS file '#{@file}' not found in '#{less_dir}'"
end
css = f.readlines().join()
digest = Digest::MD5.hexdigest(css)
css_file = digest + ".css"
css_path = File.join(site.dest, css_file)
if !File.directory?(site.dest)
Dir.mkdir(site.dest)
end
File.open(css_path, "w") do |f|
f.write(css)
end
site.static_files << LessCSSFile.new(site, site.source, '', css_file)
'<link rel="stylesheet" type="text/css" href="/' + css_file + '" />'
else
return "LessCSS file '#{@file}' not found in '#{less_dir}'"
end
end
#Print CSS link in HTML layout
'<link rel="stylesheet" type="text/css" href="/' + config['lessdone'][@file] + '" />'
end
end