Class Methods
::
lib/rexml/parsers/sax2parser.rb
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# File tmp/rubies/ruby-2.7.6/lib/rexml/parsers/sax2parser.rb, line 11
def initialize source
@parser = BaseParser.new(source)
@listeners = []
@procs = []
@namespace_stack = []
@has_listeners = false
@tag_stack = []
@entities = {}
end
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Instance Methods
lib/rexml/parsers/sax2parser.rb
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# File tmp/rubies/ruby-2.7.6/lib/rexml/parsers/sax2parser.rb, line 257
def add( pair )
if pair[-1].respond_to? :call
@procs << pair unless @procs.include? pair
else
@listeners << pair unless @listeners.include? pair
@has_listeners = true
end
end
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lib/rexml/parsers/sax2parser.rb
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# File tmp/rubies/ruby-2.7.6/lib/rexml/parsers/sax2parser.rb, line 25
def add_listener( listener )
@parser.add_listener( listener )
end
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lib/rexml/parsers/sax2parser.rb
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# File tmp/rubies/ruby-2.7.6/lib/rexml/parsers/sax2parser.rb, line 77
def deafen( listener=nil, &blok )
if listener
@listeners.delete_if {|item| item[-1] == listener }
@has_listeners = false if @listeners.size == 0
else
@procs.delete_if {|item| item[-1] == blok }
end
end
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lib/rexml/parsers/sax2parser.rb
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# File tmp/rubies/ruby-2.7.6/lib/rexml/parsers/sax2parser.rb, line 243
def get_listeners( symbol, name )
return nil if @listeners.size == 0
@listeners.find_all do |sym, match, block|
(
(sym.nil? or symbol == sym) and
((name.nil? and match.nil?) or match.nil? or (
(name == match) or
(match.kind_of? Regexp and name =~ match)
)
)
)
end.collect{|x| x[-1]}
end
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lib/rexml/parsers/sax2parser.rb
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# File tmp/rubies/ruby-2.7.6/lib/rexml/parsers/sax2parser.rb, line 266
def get_namespace( prefix )
uris = (@namespace_stack.find_all { |ns| not ns[prefix].nil? }) ||
(@namespace_stack.find { |ns| not ns[nil].nil? })
uris[-1][prefix] unless uris.nil? or 0 == uris.size
end
No documentation available
lib/rexml/parsers/sax2parser.rb
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# File tmp/rubies/ruby-2.7.6/lib/rexml/parsers/sax2parser.rb, line 230
def get_procs( symbol, name )
return nil if @procs.size == 0
@procs.find_all do |sym, match, block|
(
(sym.nil? or symbol == sym) and
((name.nil? and match.nil?) or match.nil? or (
(name == match) or
(match.kind_of? Regexp and name =~ match)
)
)
)
end.collect{|x| x[-1]}
end
The following methods are duplicates, but it is faster than using a helper
lib/rexml/parsers/sax2parser.rb
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# File tmp/rubies/ruby-2.7.6/lib/rexml/parsers/sax2parser.rb, line 190
def handle( symbol, *arguments )
tag = @tag_stack[-1]
procs = get_procs( symbol, tag )
listeners = get_listeners( symbol, tag )
# notify observers
procs.each { |ob| ob.call( *arguments ) } if procs
listeners.each { |l|
l.send( symbol.to_s, *arguments )
} if listeners
end
No documentation available
lib/rexml/parsers/sax2parser.rb
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# File tmp/rubies/ruby-2.7.6/lib/rexml/parsers/sax2parser.rb, line 201
def handle_entitydecl( event )
@entities[ event[1] ] = event[2] if event.size == 3
parameter_reference_p = false
case event[2]
when "SYSTEM"
if event.size == 5
if event.last == "%"
parameter_reference_p = true
else
event[4, 0] = "NDATA"
end
end
when "PUBLIC"
if event.size == 6
if event.last == "%"
parameter_reference_p = true
else
event[5, 0] = "NDATA"
end
end
else
parameter_reference_p = (event.size == 4)
end
event[1, 0] = event.pop if parameter_reference_p
handle( event[0], event[1..-1] )
end
No documentation available
lib/rexml/parsers/sax2parser.rb
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# File tmp/rubies/ruby-2.7.6/lib/rexml/parsers/sax2parser.rb, line 59
def listen( *args, &blok )
if args[0].kind_of? Symbol
if args.size == 2
args[1].each { |match| @procs << [args[0], match, blok] }
else
add( [args[0], nil, blok] )
end
elsif args[0].kind_of? Array
if args.size == 2
args[0].each { |match| add( [nil, match, args[1]] ) }
else
args[0].each { |match| add( [ :start_element, match, blok ] ) }
end
else
add([nil, nil, args[0]])
end
end
Listen arguments:
Listen to Symbol events on Array elements
Symbol, Block
Listen to Symbol events
Array, Listener
Listen to all events on Array elements
Array, Block
Listen to :start_element events on Array elements
Listener
Listen to All events
Symbol can be one of: :start_element, :end_element, :start_prefix_mapping, :end_prefix_mapping, :characters, :processing_instruction, :doctype, :attlistdecl, :elementdecl, :entitydecl, :notationdecl, :cdata, :xmldecl, :comment
There is an additional symbol that can be listened for: :progress. This will be called for every event generated, passing in the current stream position.
Array contains regular expressions or strings which will be matched against fully qualified element names.
Listener must implement the methods in SAX2Listener
Block will be passed the same arguments as a SAX2Listener method would be, where the method name is the same as the matched Symbol. See the SAX2Listener for more information.
#
lib/rexml/parsers/sax2parser.rb
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# File tmp/rubies/ruby-2.7.6/lib/rexml/parsers/sax2parser.rb, line 86
def parse
@procs.each { |sym,match,block| block.call if sym == :start_document }
@listeners.each { |sym,match,block|
block.start_document if sym == :start_document or sym.nil?
}
context = []
while true
event = @parser.pull
case event[0]
when :end_document
handle( :end_document )
break
when :start_doctype
handle( :doctype, *event[1..-1])
when :end_doctype
context = context[1]
when :start_element
@tag_stack.push(event[1])
# find the observers for namespaces
procs = get_procs( :start_prefix_mapping, event[1] )
listeners = get_listeners( :start_prefix_mapping, event[1] )
if procs or listeners
# break out the namespace declarations
# The attributes live in event[2]
event[2].each {|n, v| event[2][n] = @parser.normalize(v)}
nsdecl = event[2].find_all { |n, value| n =~ /^xmlns(:|$)/ }
nsdecl.collect! { |n, value| [ n[6..-1], value ] }
@namespace_stack.push({})
nsdecl.each do |n,v|
@namespace_stack[-1][n] = v
# notify observers of namespaces
procs.each { |ob| ob.call( n, v ) } if procs
listeners.each { |ob| ob.start_prefix_mapping(n, v) } if listeners
end
end
event[1] =~ Namespace::NAMESPLIT
prefix = $1
local = $2
uri = get_namespace(prefix)
# find the observers for start_element
procs = get_procs( :start_element, event[1] )
listeners = get_listeners( :start_element, event[1] )
# notify observers
procs.each { |ob| ob.call( uri, local, event[1], event[2] ) } if procs
listeners.each { |ob|
ob.start_element( uri, local, event[1], event[2] )
} if listeners
when :end_element
@tag_stack.pop
event[1] =~ Namespace::NAMESPLIT
prefix = $1
local = $2
uri = get_namespace(prefix)
# find the observers for start_element
procs = get_procs( :end_element, event[1] )
listeners = get_listeners( :end_element, event[1] )
# notify observers
procs.each { |ob| ob.call( uri, local, event[1] ) } if procs
listeners.each { |ob|
ob.end_element( uri, local, event[1] )
} if listeners
namespace_mapping = @namespace_stack.pop
# find the observers for namespaces
procs = get_procs( :end_prefix_mapping, event[1] )
listeners = get_listeners( :end_prefix_mapping, event[1] )
if procs or listeners
namespace_mapping.each do |ns_prefix, ns_uri|
# notify observers of namespaces
procs.each { |ob| ob.call( ns_prefix ) } if procs
listeners.each { |ob| ob.end_prefix_mapping(ns_prefix) } if listeners
end
end
when :text
#normalized = @parser.normalize( event[1] )
#handle( :characters, normalized )
copy = event[1].clone
esub = proc { |match|
if @entities.has_key?($1)
@entities[$1].gsub(Text::REFERENCE, &esub)
else
match
end
}
copy.gsub!( Text::REFERENCE, &esub )
copy.gsub!( Text::NUMERICENTITY ) {|m|
m=$1
m = "0#{m}" if m[0] == ?x
[Integer(m)].pack('U*')
}
handle( :characters, copy )
when :entitydecl
handle_entitydecl( event )
when :processing_instruction, :comment, :attlistdecl,
:elementdecl, :cdata, :notationdecl, :xmldecl
handle( *event )
end
handle( :progress, @parser.position )
end
end
No documentation available
#
lib/rexml/parsers/sax2parser.rb
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# File tmp/rubies/ruby-2.7.6/lib/rexml/parsers/sax2parser.rb, line 21
def source
@parser.source
end
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