Class: Diff2Xml::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/diff2xml/parser.rb

Instance Method Summary collapse

Constructor Details

#initialize(handler) ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/diff2xml/parser.rb', line 35

def initialize(handler)
  @source = ""
  @started = false
  @block_started = false
  @handler = handler
end

Instance Method Details

#parse(istream) ⇒ Object 



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# File 'lib/diff2xml/parser.rb', line 42

def parse(istream)
  @handler.start_parse
  istream.each do |line|
    if /^\-\-\-[\t\s]*([\w+\.\/\\\:]+)/.match(line) then
      @source = $1
    elsif /^\+\+\+[\t\s]*([\w+\.\/\\\:]+)/.match(line) then
      target = $1
      if @started then
        @handler.end_document
      end
      @handler.start_document(@source, target)
      @started = true
    elsif /^\-(.*)/.match(line) then
      @handler.source_line($1)
    elsif /^\+(.*)/.match(line) then
      @handler.target_line($1)
    elsif /^\s(.*)/.match(line) then
      @handler.common_line($1)
    elsif /^@@\s\-(\d+),(\d+)\s\+(\d+),(\d+)\s@@/.match(line) then
      if @block_started then
        @handler.end_block
      end
      @handler.start_block($1, $2, $3, $4)
      @block_started = true
    end
  end
  if @block_started then
    @handler.end_block
  end
  if @started then
    @handler.end_document
  end
  @handler.end_parse
end