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Versions: 10
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Contents
# Template and Mime detection
require 'tilt'
require 'rack/mime'
require 'middleman-core/contracts'
module Middleman
module Util
include Contracts
module_function
# Whether the source file is binary.
#
# @param [String] filename The file to check.
# @return [Boolean]
Contract Or[String, Pathname] => Bool
def binary?(filename)
@binary_cache ||= {}
return @binary_cache[filename] if @binary_cache.key?(filename)
@binary_cache[filename] = begin
path = Pathname(filename)
ext = path.extname
# We hardcode detecting of gzipped SVG files
if ext == '.svgz'
true
elsif ::Tilt.registered?(ext.sub('.', ''))
false
else
dot_ext = (ext.to_s[0] == '.') ? ext.dup : ".#{ext}"
if mime = ::Rack::Mime.mime_type(dot_ext, nil)
!nonbinary_mime?(mime)
else
file_contents_include_binary_bytes?(path.to_s)
end
end
end
end
# Is mime type known to be non-binary?
#
# @param [String] mime The mimetype to check.
# @return [Boolean]
Contract String => Bool
def nonbinary_mime?(mime)
case
when mime.start_with?('text/')
true
when mime.include?('xml') && !mime.include?('officedocument')
true
when mime.include?('json')
true
when mime.include?('javascript')
true
else
false
end
end
# Read a few bytes from the file and see if they are binary.
#
# @param [String] filename The file to check.
# @return [Boolean]
Contract String => Bool
def file_contents_include_binary_bytes?(filename)
binary_bytes = [0, 1, 2, 3, 4, 5, 6, 11, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 28, 29, 30, 31]
s = ::File.read(filename, 4096) || ''
s.each_byte do |c|
return true if binary_bytes.include?(c)
end
false
end
end
end
Version data entries
10 entries across 10 versions & 2 rubygems