class REXML::IOSource
A Source
that wraps an IO. See the Source
class for method documentation
Public Class Methods
new(arg, block_size=500, encoding=nil)
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block_size has been deprecated
Calls superclass method
REXML::Source::new
# File lib/rexml/source.rb, line 140 def initialize(arg, block_size=500, encoding=nil) @er_source = @source = arg @to_utf = false @pending_buffer = nil if encoding super("", encoding) else super(@source.read(3) || "") end if !@to_utf and @orig.respond_to?(:force_encoding) and @source.respond_to?(:external_encoding) and @source.external_encoding != ::Encoding::UTF_8 @force_utf8 = true else @force_utf8 = false end end
Public Instance Methods
current_line()
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@return the current line in the source
# File lib/rexml/source.rb, line 199 def current_line begin pos = @er_source.pos # The byte position in the source lineno = @er_source.lineno # The XML < position in the source @er_source.rewind line = 0 # The \r\n position in the source begin while @er_source.pos < pos @er_source.readline line += 1 end rescue end @er_source.seek(pos) rescue IOError pos = -1 line = -1 end [pos, lineno, line] end
empty?()
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Calls superclass method
REXML::Source#empty?
# File lib/rexml/source.rb, line 194 def empty? super and ( @source.nil? || @source.eof? ) end
ensure_buffer()
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# File lib/rexml/source.rb, line 171 def ensure_buffer read if @scanner.eos? && @source end
match( pattern, cons=false )
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Note: When specifying a string for 'pattern', it must not include '>' except in the following formats:
-
“>”
-
“XXX>” (X is any string excluding '>')
# File lib/rexml/source.rb, line 178 def match( pattern, cons=false ) while true if cons md = @scanner.scan(pattern) else md = @scanner.check(pattern) end break if md return nil if pattern.is_a?(String) return nil if @source.nil? return nil unless read end md.nil? ? nil : @scanner end
read()
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# File lib/rexml/source.rb, line 161 def read begin @scanner << readline true rescue Exception, NameError @source = nil false end end