1 files changed, 225 insertions, 0 deletions
diff --git a/plist/parser.rb b/plist/parser.rb
new file mode 100755
index 0000000..6daa5bf
--- /dev/null
+++ b/plist/parser.rb
@@ -0,0 +1,225 @@
+#!/usr/bin/env ruby
+#
+# = plist
+#
+# Copyright 2006-2010 Ben Bleything and Patrick May
+# Distributed under the MIT License
+#
+
+# Plist parses Mac OS X xml property list files into ruby data structures.
+#
+# === Load a plist file
+# This is the main point of the library:
+#
+#   r = Plist::parse_xml( filename_or_xml )
+module Plist
+# Note that I don't use these two elements much:
+#
+#  + Date elements are returned as DateTime objects.
+#  + Data elements are implemented as Tempfiles
+#
+# Plist::parse_xml will blow up if it encounters a data element.
+# If you encounter such an error, or if you have a Date element which
+# can't be parsed into a Time object, please send your plist file to
+# plist@hexane.org so that I can implement the proper support.
+  def Plist::parse_xml( filename_or_xml )
+    listener = Listener.new
+    #parser = REXML::Parsers::StreamParser.new(File.new(filename), listener)
+    parser = StreamParser.new(filename_or_xml, listener)
+    parser.parse
+    listener.result
+  end
+
+  class Listener
+    #include REXML::StreamListener
+
+    attr_accessor :result, :open
+
+    def initialize
+      @result = nil
+      @open   = Array.new
+    end
+
+
+    def tag_start(name, attributes)
+      @open.push PTag::mappings[name].new
+    end
+
+    def text( contents )
+      @open.last.text = contents if @open.last
+    end
+
+    def tag_end(name)
+      last = @open.pop
+      if @open.empty?
+        @result = last.to_ruby
+      else
+        @open.last.children.push last
+      end
+    end
+  end
+
+  class StreamParser
+    def initialize( plist_data_or_file, listener )
+      if plist_data_or_file.respond_to? :read
+        @xml = plist_data_or_file.read
+      elsif File.exists? plist_data_or_file
+        @xml = File.read( plist_data_or_file )
+      else
+        @xml = plist_data_or_file
+      end
+
+      @listener = listener
+    end
+
+    TEXT       = /([^<]+)/
+    XMLDECL_PATTERN = /<\?xml\s+(.*?)\?>*/um
+    DOCTYPE_PATTERN = /\s*<!DOCTYPE\s+(.*?)(\[|>)/um
+    COMMENT_START = /\A<!--/u
+    COMMENT_END = /.*?-->/um
+
+
+    def parse
+      plist_tags = PTag::mappings.keys.join('|')
+      start_tag  = /<(#{plist_tags})([^>]*)>/i
+      end_tag    = /<\/(#{plist_tags})[^>]*>/i
+
+      require 'strscan'
+
+      @scanner = StringScanner.new( @xml )
+      until @scanner.eos?
+        if @scanner.scan(COMMENT_START)
+          @scanner.scan(COMMENT_END)
+        elsif @scanner.scan(XMLDECL_PATTERN)
+        elsif @scanner.scan(DOCTYPE_PATTERN)
+        elsif @scanner.scan(start_tag)
+          @listener.tag_start(@scanner[1], nil)
+          if (@scanner[2] =~ /\/$/)
+            @listener.tag_end(@scanner[1])
+          end
+        elsif @scanner.scan(TEXT)
+          @listener.text(@scanner[1])
+        elsif @scanner.scan(end_tag)
+          @listener.tag_end(@scanner[1])
+        else
+          raise "Unimplemented element"
+        end
+      end
+    end
+  end
+
+  class PTag
+    @@mappings = { }
+    def PTag::mappings
+      @@mappings
+    end
+
+    def PTag::inherited( sub_class )
+      key = sub_class.to_s.downcase
+      key.gsub!(/^plist::/, '' )
+      key.gsub!(/^p/, '')  unless key == "plist"
+
+      @@mappings[key] = sub_class
+    end
+
+    attr_accessor :text, :children
+    def initialize
+      @children = Array.new
+    end
+
+    def to_ruby
+      raise "Unimplemented: " + self.class.to_s + "#to_ruby on #{self.inspect}"
+    end
+  end
+
+  class PList < PTag
+    def to_ruby
+      children.first.to_ruby if children.first
+    end
+  end
+
+  class PDict < PTag
+    def to_ruby
+      dict = Hash.new
+      key = nil
+
+      children.each do |c|
+        if key.nil?
+          key = c.to_ruby
+        else
+          dict[key] = c.to_ruby
+          key = nil
+        end
+      end
+
+      dict
+    end
+  end
+
+  class PKey < PTag
+    def to_ruby
+      CGI::unescapeHTML(text || '')
+    end
+  end
+
+  class PString < PTag
+    def to_ruby
+      CGI::unescapeHTML(text || '')
+    end
+  end
+
+  class PArray < PTag
+    def to_ruby
+      children.collect do |c|
+        c.to_ruby
+      end
+    end
+  end
+
+  class PInteger < PTag
+    def to_ruby
+      text.to_i
+    end
+  end
+
+  class PTrue < PTag
+    def to_ruby
+      true
+    end
+  end
+
+  class PFalse < PTag
+    def to_ruby
+      false
+    end
+  end
+
+  class PReal < PTag
+    def to_ruby
+      text.to_f
+    end
+  end
+
+  require 'date'
+  class PDate < PTag
+    def to_ruby
+      DateTime.parse(text)
+    end
+  end
+
+  require 'base64'
+  class PData < PTag
+    def to_ruby
+      data = Base64.decode64(text.gsub(/\s+/, ''))
+
+      begin
+        return Marshal.load(data)
+      rescue Exception => e
+        io = StringIO.new
+        io.write data
+        io.rewind
+        return io
+      end
+    end
+  end
+end