Class: Bayonetta::BXMFile

Inherits:
LibBin::Structure
  • Object
show all
Defined in:
lib/bayonetta/bxm.rb

Overview

begin

Defined Under Namespace

Classes: Datum, Header, Node

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.from_xml(xml, tag = "BXM\x00".b) ⇒ Object 



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# File 'lib/bayonetta/bxm.rb', line 130

def self.from_xml(xml, tag="BXM\x00".b)
  bxm = self.new
  bxm.from_xml(xml, tag)
end

.is_big?(f) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/bayonetta/bxm.rb', line 135

def self.is_big?(f)
  true
end

.load(input_name) ⇒ Object 



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# File 'lib/bayonetta/bxm.rb', line 139

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
  tag = input.read(4).unpack("a4").first
  raise "invalid file type #{tag}!" if tag != "XML\x00".b && tag != "BXM\x00".b
  input.rewind
  bxm = self.new
  big = input_big = is_big?(input)
  bxm.instance_variable_set(:@__was_big, big)
  bxm.__load(input, big)
  input.close unless input_name.respond_to?(:read) && input_name.respond_to?(:seek)
  bxm
end

Instance Method Details

#build_xml_tree(doc, index, datas) ⇒ Object 



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# File 'lib/bayonetta/bxm.rb', line 49

def build_xml_tree(doc, index, datas)
  node = nodes[index]
  name, value = datas[node.datum_index]
  n = Nokogiri::XML::Node.new(name, doc)
  n.content = value if value
  node.attribute_count.times { |i|
    name, value = datas[node.datum_index + i + 1]
    n[name] = value
  }
  node.child_count.times { |i|
    n << build_xml_tree(doc, node.first_child_index + i, datas)
  }
  n
end

#dump(output_name, output_big = true) ⇒ Object 



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# File 'lib/bayonetta/bxm.rb', line 158

def dump(output_name, output_big = true)
  if output_name.respond_to?(:write) && output_name.respond_to?(:seek)
    output = output_name
  else
    output = StringIO::new("".b, "wb")
  end

  __set_dump_state(output, 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

#from_xml(xml, tag) ⇒ Object 



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# File 'lib/bayonetta/bxm.rb', line 102

def from_xml(xml, tag)
  @header = Header.new
  @nodes = []
  @datums = []
  @data = Set.new
  header.id = tag
  header.unknown = 0
  process_node(xml.children.first, 0, 1)
  header.node_count = nodes.length
  header.datum_count = datums.length
  io = StringIO::new("", "wb")
  data_map = data.collect { |d|
    pos = io.tell
    io.write(d, "\0")
    [d, pos]
  }.to_h
  data_map[nil] = -1
  datums.collect! { |n, v|
    d = Datum.new
    d.name_offset = data_map[n]
    d.value_offset = data_map[v]
    d
  }
  @data = io.string
  header.data_size = data.bytesize
  self
end

#get_data_strings ⇒ Object 



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# File 'lib/bayonetta/bxm.rb', line 33

def get_data_strings
  io = StringIO::new(data, "rb")
  pos = 0
  data_strings = {-1 => nil}
  while (l = io.gets("\0"))
    data_strings[pos] = l.unpack("Z*").first
    pos = io.tell
  end
  data_strings
end

#get_datas ⇒ Object 



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# File 'lib/bayonetta/bxm.rb', line 44

def get_datas
  data_strings = get_data_strings
  datums.collect { |d| [data_strings[d.name_offset], data_strings[d.value_offset]] }
end

#process_node(node, index, next_node_index) ⇒ Object 



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# File 'lib/bayonetta/bxm.rb', line 71

def process_node(node, index, next_node_index)
  name = node.name
  children = node.elements
  value = node.content if children.empty?
  value = value.strip if value
  value = nil if value == ''
  attributes = node.attributes

  n = Node.new
  n.child_count = children.size
  n.first_child_index = next_node_index
  n.attribute_count = attributes.size
  nodes[index] = n

  node_datums = [[name, value]]
  attributes.each { |k, v| node_datums.push [k, v.value] }
  datum_index = datums.each_cons(node_datums.size).find_index { |sub| sub == node_datums }
  if datum_index
    n.datum_index = datum_index
  else
    n.datum_index = datums.size
    datums.push *node_datums
    node_datums.flatten.each { |v| data.add v if v }
  end
  next_node_index += children.size
  children.each_with_index { |c, i|
    next_node_index = process_node(c, n.first_child_index + i, next_node_index)
  }
  next_node_index
end

#to_xml ⇒ Object 



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# File 'lib/bayonetta/bxm.rb', line 64

def to_xml
  datas = get_datas
  doc = Nokogiri::XML::Document::new
  doc << build_xml_tree(doc, 0, datas) if header.node_count > 0
  doc
end