1module REXML
2  # A template for stream parser listeners.
3  # Note that the declarations (attlistdecl, elementdecl, etc) are trivially
4  # processed; REXML doesn't yet handle doctype entity declarations, so you
5  # have to parse them out yourself.
6  # === Missing methods from SAX2
7  #  ignorable_whitespace
8  # === Methods extending SAX2
9  # +WARNING+
10  # These methods are certainly going to change, until DTDs are fully
11  # supported.  Be aware of this.
12  #  start_document
13  #  end_document
14  #  doctype
15  #  elementdecl
16  #  attlistdecl
17  #  entitydecl
18  #  notationdecl
19  #  cdata
20  #  xmldecl
21  #  comment
22  module SAX2Listener
23    def start_document
24    end
25    def end_document
26    end
27    def start_prefix_mapping prefix, uri
28    end
29    def end_prefix_mapping prefix
30    end
31    def start_element uri, localname, qname, attributes
32    end
33    def end_element uri, localname, qname
34    end
35    def characters text
36    end
37    def processing_instruction target, data
38    end
39    # Handles a doctype declaration. Any attributes of the doctype which are
40    # not supplied will be nil.  # EG, <!DOCTYPE me PUBLIC "foo" "bar">
41    # @p name the name of the doctype; EG, "me"
42    # @p pub_sys "PUBLIC", "SYSTEM", or nil.  EG, "PUBLIC"
43    # @p long_name the supplied long name, or nil.  EG, "foo"
44    # @p uri the uri of the doctype, or nil.  EG, "bar"
45    def doctype name, pub_sys, long_name, uri
46    end
47    # If a doctype includes an ATTLIST declaration, it will cause this
48    # method to be called.  The content is the declaration itself, unparsed.
49    # EG, <!ATTLIST el attr CDATA #REQUIRED> will come to this method as "el
50    # attr CDATA #REQUIRED".  This is the same for all of the .*decl
51    # methods.
52    def attlistdecl(element, pairs, contents)
53    end
54    # <!ELEMENT ...>
55    def elementdecl content
56    end
57    # <!ENTITY ...>
58    # The argument passed to this method is an array of the entity
59    # declaration.  It can be in a number of formats, but in general it
60    # returns (example, result):
61    #  <!ENTITY % YN '"Yes"'>
62    #  ["%", "YN", "'\"Yes\"'", "\""]
63    #  <!ENTITY % YN 'Yes'>
64    #  ["%", "YN", "'Yes'", "s"]
65    #  <!ENTITY WhatHeSaid "He said %YN;">
66    #  ["WhatHeSaid", "\"He said %YN;\"", "YN"]
67    #  <!ENTITY open-hatch SYSTEM "http://www.textuality.com/boilerplate/OpenHatch.xml">
68    #  ["open-hatch", "SYSTEM", "\"http://www.textuality.com/boilerplate/OpenHatch.xml\""]
69    #  <!ENTITY open-hatch PUBLIC "-//Textuality//TEXT Standard open-hatch boilerplate//EN" "http://www.textuality.com/boilerplate/OpenHatch.xml">
70    #  ["open-hatch", "PUBLIC", "\"-//Textuality//TEXT Standard open-hatch boilerplate//EN\"", "\"http://www.textuality.com/boilerplate/OpenHatch.xml\""]
71    #  <!ENTITY hatch-pic SYSTEM "../grafix/OpenHatch.gif" NDATA gif>
72    #  ["hatch-pic", "SYSTEM", "\"../grafix/OpenHatch.gif\"", "\n\t\t\t\t\t\t\tNDATA gif", "gif"]
73    def entitydecl name, decl
74    end
75    # <!NOTATION ...>
76    def notationdecl content
77    end
78    # Called when <![CDATA[ ... ]]> is encountered in a document.
79    # @p content "..."
80    def cdata content
81    end
82    # Called when an XML PI is encountered in the document.
83    # EG: <?xml version="1.0" encoding="utf"?>
84    # @p version the version attribute value.  EG, "1.0"
85    # @p encoding the encoding attribute value, or nil.  EG, "utf"
86    # @p standalone the standalone attribute value, or nil.  EG, nil
87    # @p spaced the declaration is followed by a line break
88    def xmldecl version, encoding, standalone
89    end
90    # Called when a comment is encountered.
91    # @p comment The content of the comment
92    def comment comment
93    end
94    def progress position
95    end
96  end
97end
98