Class: SwfRuby::AsVarReplaceTarget

Inherits:
ReplaceTarget show all
Defined in:
lib/swf_ruby/replace_target.rb

Instance Attribute Summary collapse

Attributes inherited from ReplaceTarget

#offset

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(action_push_offset, do_action_offset, str, parent_sprite_offset = nil) ⇒ AsVarReplaceTarget

Returns a new instance of AsVarReplaceTarget.



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# File 'lib/swf_ruby/replace_target.rb', line 114

def initialize(action_push_offset, do_action_offset, str, parent_sprite_offset = nil)
  @offset = action_push_offset
  @do_action_offset = do_action_offset
  @str = str
  @parent_sprite_offset = parent_sprite_offset
end

Instance Attribute Details

#do_action_offset ⇒ Object

Returns the value of attribute do_action_offset.



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# File 'lib/swf_ruby/replace_target.rb', line 110

def do_action_offset
  @do_action_offset
end

#parent_sprite_offset ⇒ Object

Returns the value of attribute parent_sprite_offset.



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# File 'lib/swf_ruby/replace_target.rb', line 112

def parent_sprite_offset
  @parent_sprite_offset
end

#str ⇒ Object

Returns the value of attribute str.



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# File 'lib/swf_ruby/replace_target.rb', line 111

def str
  @str
end

Class Method Details

.build_by_var_name(swf_dumper, var_name) ⇒ Object

指定したAS変数名に対するAsVarReplaceTargetのリストを生成する



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# File 'lib/swf_ruby/replace_target.rb', line 122

def self.build_by_var_name(swf_dumper, var_name)
  as_var_replace_targets = []
  swf_dumper.tags.each_with_index do |t, i|
    if t.code == 39
      # DefineSprite
      sd = SpriteDumper.new
      sd.dump(t)
      sd.tags.each_with_index do |u, j|
        if u.code == 12
          # DoAction in DefineSprite
          as_var_replace_targets += AsVarReplaceTarget.generate_as_var_replace_target_by_do_action(var_name, swf_dumper, j, sd, swf_dumper.tags_addresses[i])
        end
      end
    end
    if t.code == 12
      # DoAction
      as_var_replace_targets += AsVarReplaceTarget.generate_as_var_replace_target_by_do_action(var_name, swf_dumper, i)
    end
  end
  as_var_replace_targets
end

.generate_as_var_replace_target_by_do_action(var_name, swf_dumper, do_action_index, sprite_dumper = nil, parent_sprite_offset = nil) ⇒ Object

指定したインデックス(SWFまたはSpriteの先頭からカウント)にあるDoAction以下を走査し、指定したAS変数名の代入部分を発見し、AsVarReplaceTargetのリストを生成する.



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# File 'lib/swf_ruby/replace_target.rb', line 146

def self.generate_as_var_replace_target_by_do_action(var_name, swf_dumper, do_action_index, sprite_dumper = nil, parent_sprite_offset = nil)
  as_var_replace_targets = []
  action_records = []
  do_action_offset = 0

  dad = DoActionDumper.new
  if sprite_dumper
    do_action_offset = parent_sprite_offset + sprite_dumper.tags_addresses[do_action_index]
    dad.dump(swf_dumper.swf[do_action_offset, sprite_dumper.tags[do_action_index].length])
  else 
    do_action_offset = swf_dumper.tags_addresses[do_action_index]
    dad.dump(swf_dumper.swf[do_action_offset, swf_dumper.tags[do_action_index].length])
  end
  dad.actions.each_with_index do |ar, i|
    # ActionPush, ActionPush, SetVariableの並びを検出したら変数名をチェック.
    action_records.shift if action_records.length > 2
    action_records << ar
    if ar.code == 29 and
      action_records[0] and
      action_records[0].code == 150 and
      action_records[0].data.delete("\0") == var_name and
      action_records[1].code == 150
      # 対象の代入式を発見.
      ap = Swf::ActionPush.new(action_records[1])
      as_var_replace_targets << AsVarReplaceTarget.new(
        do_action_offset + dad.actions_addresses[i] - action_records[1].length,
        do_action_offset,
        "",
        parent_sprite_offset
      )
    end
  end
  as_var_replace_targets
end