Class: Bayonetta::DATFile
- Inherits:
-
LibBin::Structure
- Object
- LibBin::Structure
- Bayonetta::DATFile
- Includes:
- Alignment
- Defined in:
- lib/bayonetta/dat.rb
Defined Under Namespace
Constant Summary collapse
- ALIGNMENTS =
{ 'dat' => 0x2000, 'wmb' => 0x1000, 'wtb' => 0x1000, 'wtp' => 0x1000, 'wta' => 0x40, 'exp' => 0x1000, 'sop' => 0x40, 'eff' => 0x1000, 'sdx' => 0x1000, 'bxm' => 0x40 }
Instance Attribute Summary collapse
-
#big ⇒ Object
readonly
Returns the value of attribute big.
Class Method Summary collapse
Instance Method Summary collapse
- #[](i) ⇒ Object
- #compute_layout ⇒ Object
- #dump(output_name) ⇒ Object
- #each ⇒ Object
-
#initialize(big = false) ⇒ DATFile
constructor
A new instance of DATFile.
- #invalidate_layout ⇒ Object
- #layout ⇒ Object
- #push(name, file) ⇒ Object
- #set_hash_map(hash) ⇒ Object
Constructor Details
#initialize(big = false) ⇒ DATFile
Returns a new instance of DATFile.
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# File 'lib/bayonetta/dat.rb', line 118 def initialize(big = false) @big = big super() @header = Header::new @header.id = "DAT\x00".b @header.num_files = 0 @header.offset_file_offsets = 0 @header.offset_file_extensions = 0 @header.offset_file_names = 0 @header.offset_file_sizes = 0 @header.offset_hash_map = 0 @file_offsets = [] @file_extensions = [] @file_name_length = 0 @file_names = [] @file_sizes = [] @files = [] @hash_map = nil end |
Instance Attribute Details
#big ⇒ Object (readonly)
Returns the value of attribute big.
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# File 'lib/bayonetta/dat.rb', line 5 def big @big end |
Class Method Details
.is_big?(f) ⇒ Boolean
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# File 'lib/bayonetta/dat.rb', line 101 def self.is_big?(f) f.rewind block = lambda { |big| h = Header::load(f, big) h.offset_file_offsets < f.size && h.offset_file_names < f.size && h.offset_file_sizes < f.size && h.offset_hash_map < f.size } big = block.call(true) f.rewind small = block.call(false) f.rewind raise "Invalid data!" unless big ^ small return big end |
.load(input_name) ⇒ Object
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# File 'lib/bayonetta/dat.rb', line 220 def self.load(input_name) if input_name.respond_to?(:read) && input_name.respond_to?(:seek) input = input_name else File.open(input_name, "rb") { |f| input = StringIO::new(f.read, "rb") } end big = self::is_big?(input) dat = self::new(big) dat.__load(input, big) input.close unless input_name.respond_to?(:read) && input_name.respond_to?(:seek) dat end |
Instance Method Details
#[](i) ⇒ Object
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# File 'lib/bayonetta/dat.rb', line 165 def [](i) return [@file_names[i][0..-2], StringIO::new(@files[i] ? @files[i] : "", "rb")] end |
#compute_layout ⇒ Object
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# File 'lib/bayonetta/dat.rb', line 187 def compute_layout @header.offset_file_offsets = 0x20 @header.offset_file_extensions = @header.offset_file_offsets + 4 * @header.num_files @header.offset_file_names = @header.offset_file_extensions + 4 * @header.num_files max_file_name_length = @file_names.collect(&:length).max @file_name_length = max_file_name_length @header.offset_file_sizes = @header.offset_file_names + 4 + @file_name_length * @header.num_files @header.offset_file_sizes = align(@header.offset_file_sizes, 4) if @hash_map @header.offset_hash_map = @header.offset_file_sizes + 4 * @header.num_files files_offset = @header.offset_hash_map + @hash_map.__size(@header.offset_hash_map, self) else @offset_hash_map = 0 files_offset = @header.offset_file_sizes + 4 * @header.num_files end @file_offsets = @header.num_files.times.collect { |i| if @file_sizes[i] > 0 tmp = align(files_offset, ALIGNMENTS[@file_extensions[i][0..-2]]) files_offset = align(tmp + @file_sizes[i], ALIGNMENTS[@file_extensions[i][0..-2]]) tmp else 0 end } @total_size = align(files_offset, 0x1000) self end |
#dump(output_name) ⇒ Object
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# File 'lib/bayonetta/dat.rb', line 235 def dump(output_name) compute_layout if output_name.respond_to?(:write) && output_name.respond_to?(:seek) output = output_name else output = StringIO::new("", "wb")#File.open(output_name, "wb") output.write("\x00"*@total_size) output.rewind end output.rewind __set_dump_state(output, @big, nil, nil) __dump_fields __unset_dump_state unless output_name.respond_to?(:write) && output_name.respond_to?(:seek) File.open(output_name, "wb") { |f| f.write output.string } output.close end self end |
#each ⇒ Object
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# File 'lib/bayonetta/dat.rb', line 155 def each if block_given? then @header.num_files.times { |i| yield @file_names[i][0..-2], StringIO::new(@files[i] ? @files[i] : "", "rb") } else to_enum(:each) end end |
#invalidate_layout ⇒ Object
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# File 'lib/bayonetta/dat.rb', line 140 def invalidate_layout @header.offset_file_offsets = 0 @header.offset_file_extensions = 0 @header.offset_file_names = 0 @header.offset_file_sizes = 0 @header.offset_hash_map = 0 @file_offsets = [] @hash_map = nil self end |
#layout ⇒ Object
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# File 'lib/bayonetta/dat.rb', line 151 def layout @file_names.collect { |name| name[0..-2] } end |
#push(name, file) ⇒ Object
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# File 'lib/bayonetta/dat.rb', line 169 def push(name, file) invalidate_layout @file_names.push name+"\x00" if file.kind_of?(StringIO) data = file.string else file.rewind data = file.read end @files.push data @file_sizes.push file.size extname = File.extname(name) raise "Invalid name, missing extension!" if extname == "" @file_extensions.push extname[1..-1]+"\x00" @header.num_files += 1 self end |