* Fixes a bug in the pretty printer related to an incomplete refactoring.

* Fixes another bug related to the formatting code refactoring in 3.1.7
* Fixes ticket:99, and adds Henrik's unit test (with minor modifications)
* Fixes ticket:102.
  Fix provided by kevinj -- thanks!  Great job.
* Implements namespace validation in the baseparser.  This means that, as per
  the XML namespace spec, unbound prefixes generate UndefinedNamespaceException.
  Also, as per the namespace spec, the 'xml' prefix must be bound to 
  http://www.w3.org/XML/1998/namespace, and the 'xmlns' prefix must not be declared. 
  in the XML.
* Eggbeater missed one.
* Fix for ticket:115
* Fixes a bug in the pretty printer related to an incomplete refactoring.
* Merge code cleanups
* Fixes another bug related to the formatting code refactoring in 3.1.7
* Indentation fix.
* r1342@bean (orig r12846):  nobu | 2007-07-25 17:18:55 -0400
  * lib/rexml/formatters/*.rb: set properties.
* r1358@bean (orig r12883):  nobu | 2007-08-06 04:36:31 -0400
  * lib/rexml/encodings/{ISO-8859-15,CP-1252}.rb: fixed invalid syntax.
* r1359@bean (orig r13096):  nobu | 2007-08-18 02:03:45 -0400
  * lib/rexml/rexml.rb: removed doubled constant.
* r1360@bean (orig r13097):  nobu | 2007-08-18 02:12:48 -0400
  * lib/rexml/rexml.rb: added encoding.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8_6@13600 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 47 insertions, 9 deletions

diff --git a/lib/rexml/parsers/baseparser.rb b/lib/rexml/parsers/baseparser.rb
index 3782d61b2c..5f7a5ec43b 100644
--- a/lib/rexml/parsers/baseparser.rb
+++ b/lib/rexml/parsers/baseparser.rb
@@ -1,5 +1,6 @@
 require 'rexml/parseexception'
 require 'rexml/source'
+require 'set'
 
 module REXML
   module Parsers
@@ -24,7 +25,8 @@ module REXML
     # Nat Price gave me some good ideas for the API.
     class BaseParser
       NCNAME_STR= '[\w:][\-\w\d.]*'
-      NAME_STR= "(?:#{NCNAME_STR}:)?#{NCNAME_STR}"
+      NAME_STR= "(?:(#{NCNAME_STR}):)?(#{NCNAME_STR})"
+      UNAME_STR= "(?:#{NCNAME_STR}:)?#{NCNAME_STR}"
 
       NAMECHAR = '[\-\w\d\.:]'
       NAME = "([\\w:]#{NAMECHAR}*)"
@@ -35,7 +37,7 @@ module REXML
 
       DOCTYPE_START = /\A\s*<!DOCTYPE\s/um
       DOCTYPE_PATTERN = /\s*<!DOCTYPE\s+(.*?)(\[|>)/um
-      ATTRIBUTE_PATTERN = /\s*(#{NAME_STR})\s*=\s*(["'])(.*?)\2/um
+      ATTRIBUTE_PATTERN = /\s*(#{NAME_STR})\s*=\s*(["'])(.*?)\4/um
       COMMENT_START = /\A<!--/u
       COMMENT_PATTERN = /<!--(.*?)-->/um
       CDATA_START = /\A<!\[CDATA\[/u
@@ -45,7 +47,7 @@ module REXML
       XMLDECL_PATTERN = /<\?xml\s+(.*?)\?>/um
       INSTRUCTION_START = /\A<\?/u
       INSTRUCTION_PATTERN = /<\?(.*?)(\s+.*?)?\?>/um
-      TAG_MATCH = /^<((?>#{NAME_STR}))\s*((?>\s+#{NAME_STR}\s*=\s*(["']).*?\3)*)\s*(\/)?>/um
+      TAG_MATCH = /^<((?>#{NAME_STR}))\s*((?>\s+#{UNAME_STR}\s*=\s*(["']).*?\5)*)\s*(\/)?>/um
       CLOSE_MATCH = /^\s*<\/(#{NAME_STR})\s*>/um
 
       VERSION = /\bversion\s*=\s*["'](.*?)['"]/um
@@ -133,6 +135,7 @@ module REXML
         @tags = []
         @stack = []
         @entities = []
+        @nsstack = []
       end
 
       def position
@@ -213,6 +216,7 @@ module REXML
             return [ :processing_instruction, *@source.match(INSTRUCTION_PATTERN, true)[1,2] ]
           when DOCTYPE_START
             md = @source.match( DOCTYPE_PATTERN, true )
+            @nsstack.unshift(curr_ns=Set.new)
             identity = md[1]
             close = md[2]
             identity =~ IDENTITY
@@ -288,6 +292,9 @@ module REXML
                 val = attdef[3]
                 val = attdef[4] if val == "#FIXED "
                 pairs[attdef[0]] = val
+                if attdef[0] =~ /^xmlns:(.*)/
+                  @nsstack[0] << $1
+                end
               end
             end
             return [ :attlistdecl, element, pairs, contents ]
@@ -312,6 +319,7 @@ module REXML
         begin
           if @source.buffer[0] == ?<
             if @source.buffer[1] == ?/
+              @nsstack.shift
               last_tag = @tags.pop
               #md = @source.match_to_consume( '>', CLOSE_MATCH)
               md = @source.match( CLOSE_MATCH, true )
@@ -345,19 +353,47 @@ module REXML
                 raise REXML::ParseException.new("missing attribute quote", @source) if @source.match(MISSING_ATTRIBUTE_QUOTES )
                 raise REXML::ParseException.new("malformed XML: missing tag start", @source) 
               end
-              attrs = []
-              if md[2].size > 0
-                attrs = md[2].scan( ATTRIBUTE_PATTERN )
+              attributes = {}
+              prefixes = Set.new
+              prefixes << md[2] if md[2]
+              @nsstack.unshift(curr_ns=Set.new)
+              if md[4].size > 0
+                attrs = md[4].scan( ATTRIBUTE_PATTERN )
                 raise REXML::ParseException.new( "error parsing attributes: [#{attrs.join ', '}], excess = \"#$'\"", @source) if $' and $'.strip.size > 0
+                attrs.each { |a,b,c,d,e| 
+                  if b == "xmlns"
+                    if c == "xml"
+                      if d != "http://www.w3.org/XML/1998/namespace"
+                        msg = "The 'xml' prefix must not be bound to any other namespace "+
+                        "(http://www.w3.org/TR/REC-xml-names/#ns-decl)"
+                        raise REXML::ParseException.new( msg, @source, self )
+                      end
+                    elsif c == "xmlns"
+                      msg = "The 'xmlns' prefix must not be declared "+
+                      "(http://www.w3.org/TR/REC-xml-names/#ns-decl)"
+                      raise REXML::ParseException.new( msg, @source, self)
+                    end
+                    curr_ns << c
+                  elsif b
+                    prefixes << b unless b == "xml"
+                  end
+                  attributes[a] = e 
+                }
               end
         
-              if md[4]
+              # Verify that all of the prefixes have been defined
+              for prefix in prefixes
+                unless @nsstack.find{|k| k.member?(prefix)}
+                  raise UndefinedNamespaceException.new(prefix,@source,self)
+                end
+              end
+
+              if md[6]
                 @closed = md[1]
+                @nsstack.shift
               else
                 @tags.push( md[1] )
               end
-              attributes = {}
-              attrs.each { |a,b,c| attributes[a] = c }
               return [ :start_element, md[1], attributes ]
             end
           else
@@ -371,6 +407,8 @@ module REXML
             # return PullEvent.new( :text, md[1], unnormalized )
             return [ :text, md[1] ]
           end
+        rescue REXML::UndefinedNamespaceException
+          raise
         rescue REXML::ParseException
           raise
         rescue Exception, NameError => error