class Opensubtitles::MovieFile
Constants
- CHUNK_SIZE
- EXTENSIONS
Attributes
language[R]
path[R]
Public Class Methods
compute_hash(path)
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from trac.opensubtitles.org/projects/opensubtitles/wiki/HashSourceCodes
# File lib/opensubtitles/movie_file.rb, line 43 def self.compute_hash(path) filesize = File.size(path) hash = filesize # Read 64 kbytes, divide up into 64 bits and add each # to hash. Do for beginning and end of file. File.open(path, 'rb') do |f| # Q = unsigned long long = 64 bit f.read(CHUNK_SIZE).unpack("Q*").each do |n| hash = hash + n & 0xffffffffffffffff # to remain as 64 bit number end f.seek([0, filesize - CHUNK_SIZE].max, IO::SEEK_SET) # And again for the end of the file f.read(CHUNK_SIZE).unpack("Q*").each do |n| hash = hash + n & 0xffffffffffffffff end end sprintf("%016x", hash) end
new(path, language = Opensubtitles.default_language)
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# File lib/opensubtitles/movie_file.rb, line 8 def initialize(path, language = Opensubtitles.default_language) @path = path @language = language end
Public Instance Methods
has_sub?()
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# File lib/opensubtitles/movie_file.rb, line 13 def has_sub? exist = false %w(srt sub).each{ |ext| exist ||= File.exist?(sub_path(ext)) } exist end
hash()
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# File lib/opensubtitles/movie_file.rb, line 28 def hash @hash ||= self.class.compute_hash(path) end
name()
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# File lib/opensubtitles/movie_file.rb, line 36 def name @name ||= File.basename(path, File.extname(path)) end
size()
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# File lib/opensubtitles/movie_file.rb, line 32 def size @size ||= File.size(path) end
sub_path(format)
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# File lib/opensubtitles/movie_file.rb, line 19 def sub_path(format) extension = if @language ".#{@language}.#{format}" else ".#{format}" end File.join(File.dirname(path), File.basename(path, File.extname(path)) + extension) end