class REXML::Light::Node

表示一个带标签的 XML 元素。 Elements 的特点是拥有子元素、属性和名称，并且它们本身也可以是子元素。

常量

NAMESPLIT
PARENTS

公共类方法

new(node=nil) 点击以切换源码

创建一个新元素。

# File rexml-3.4.0/lib/rexml/light/node.rb, line 13
def initialize node=nil
  @node = node
  if node.kind_of? String
    node = [ :text, node ]
  elsif node.nil?
    node = [ :document, nil, nil ]
  elsif node[0] == :start_element
    node[0] = :element
  elsif node[0] == :start_doctype
    node[0] = :doctype
  elsif node[0] == :start_document
    node[0] = :document
  end
end

公共实例方法

<<(element) 点击以切换源码

将一个子元素附加到此元素，可以选择在提供的命名空间下。如果 element 参数是一个 Element 对象，则忽略 namespace 参数。否则，如果 element 参数是一个字符串，则 namespace（如果提供）是创建元素所在的命名空间。

# File rexml-3.4.0/lib/rexml/light/node.rb, line 114
def << element
  if node_type() == :text
    at(-1) << element
  else
    newnode = Node.new( element )
    newnode.parent = self
    self.push( newnode )
  end
  at(-1)
end

=~( path ) 点击以切换源码

# File rexml-3.4.0/lib/rexml/light/node.rb, line 90
def =~( path )
  XPath.match( self, path )
end

[]( reference, ns=nil ) 点击以切换源码

# File rexml-3.4.0/lib/rexml/light/node.rb, line 78
def []( reference, ns=nil )
  if reference.kind_of? String
    pfx = ''
    pfx = "#{prefix(ns)}:" if ns
    at(3)["#{pfx}#{reference}"]
  elsif reference.kind_of? Range
    _old_get( Range.new(4+reference.begin, reference.end, reference.exclude_end?) )
  else
    _old_get( 4+reference )
  end
end

[]=( reference, ns, value=nil ) 点击以切换源码

尚未处理命名空间

# File rexml-3.4.0/lib/rexml/light/node.rb, line 95
def []=( reference, ns, value=nil )
  if reference.kind_of? String
    value = ns unless value
    at( 3 )[reference] = value
  elsif reference.kind_of? Range
    _old_put( Range.new(3+reference.begin, reference.end, reference.exclude_end?), ns )
  else
    if value
      _old_put( 4+reference, ns, value )
    else
      _old_put( 4+reference, ns )
    end
  end
end

children() 点击以切换源码

# File rexml-3.4.0/lib/rexml/light/node.rb, line 143
def children
  self
end

each() { |at(x+4)| ... } 点击以切换源码

# File rexml-3.4.0/lib/rexml/light/node.rb, line 36
def each
  size.times { |x| yield( at(x+4) ) }
end

has_name?( name, namespace = '' ) 点击以切换源码

# File rexml-3.4.0/lib/rexml/light/node.rb, line 139
def has_name?( name, namespace = '' )
  at(3) == name and namespace() == namespace
end

local_name() 点击以切换源码

# File rexml-3.4.0/lib/rexml/light/node.rb, line 54
def local_name
  namesplit
  @name
end

local_name=( name_str ) 点击以切换源码

# File rexml-3.4.0/lib/rexml/light/node.rb, line 59
def local_name=( name_str )
  _old_put( 1, "#@prefix:#{name_str}" )
end

name() 点击以切换源码

# File rexml-3.4.0/lib/rexml/light/node.rb, line 40
def name
  at(2)
end

name=( name_str, ns=nil ) 点击以切换源码

# File rexml-3.4.0/lib/rexml/light/node.rb, line 44
def name=( name_str, ns=nil )
  pfx = ''
  pfx = "#{prefix(ns)}:" if ns
  _old_put(2, "#{pfx}#{name_str}")
end

namespace( prefix=prefix() ) 点击以切换源码

# File rexml-3.4.0/lib/rexml/light/node.rb, line 67
def namespace( prefix=prefix() )
  namespace_of( self, prefix )
end

namespace=( namespace ) 点击以切换源码

# File rexml-3.4.0/lib/rexml/light/node.rb, line 71
def namespace=( namespace )
  @prefix = prefix( namespace )
  pfx = ''
  pfx = "#@prefix:" if @prefix.size > 0
  _old_put(1, "#{pfx}#@name")
end

node_type() 点击以切换源码

# File rexml-3.4.0/lib/rexml/light/node.rb, line 125
def node_type
  _old_get(0)
end

parent() 点击以切换源码

# File rexml-3.4.0/lib/rexml/light/node.rb, line 147
def parent
  at(1)
end

parent=( node ) 点击以切换源码

# File rexml-3.4.0/lib/rexml/light/node.rb, line 50
def parent=( node )
  _old_put(1,node)
end

prefix( namespace=nil ) 点击以切换源码

# File rexml-3.4.0/lib/rexml/light/node.rb, line 63
def prefix( namespace=nil )
  prefix_of( self, namespace )
end

root() 点击以切换源码

# File rexml-3.4.0/lib/rexml/light/node.rb, line 134
def root
  context = self
  context = context.at(1) while context.at(1)
end

size() 点击以切换源码

# File rexml-3.4.0/lib/rexml/light/node.rb, line 28
def size
  if PARENTS.include? @node[0]
    @node[-1].size
  else
    0
  end
end

text=( foo ) 点击以切换源码

# File rexml-3.4.0/lib/rexml/light/node.rb, line 129
def text=( foo )
  replace = at(4).kind_of?(String)? 1 : 0
  self._old_put(4,replace, normalizefoo)
end

to_s() 点击以切换源码

# File rexml-3.4.0/lib/rexml/light/node.rb, line 151
def to_s

end

私有实例方法

namespace_of( node, prefix=nil ) 点击以切换源码

# File rexml-3.4.0/lib/rexml/light/node.rb, line 164
def namespace_of( node, prefix=nil )
  if not prefix
    name = at(2)
    name =~ NAMESPLIT
    prefix = $1
  end
  to_find = 'xmlns'
  to_find = "xmlns:#{prefix}" if not prefix.nil?
  ns = at(3)[ to_find ]
  ns ? ns : namespace_of( @node[0], prefix )
end

namesplit() 点击以切换源码

# File rexml-3.4.0/lib/rexml/light/node.rb, line 157
def namesplit
  return if @name.defined?
  at(2) =~ NAMESPLIT
  @prefix = '' || $1
  @name = $2
end

prefix_of( node, namespace=nil ) 点击以切换源码

# File rexml-3.4.0/lib/rexml/light/node.rb, line 176
def prefix_of( node, namespace=nil )
  if not namespace
    name = node.name
    name =~ NAMESPLIT
    $1
  else
    ns = at(3).find { |k,v| v == namespace }
    ns ? ns : prefix_of( node.parent, namespace )
  end
end