1RPC::XML::Parser(3) User Contributed Perl Documentation RPC::XML::Parser(3)
2
6 RPC::XML::Parser - Interface for parsers created by
7 RPC::XML::ParserFactory
8
10 This class is not instantiated directly; see RPC::XML::ParserFactory.
11
13 The RPC::XML::Parser class encapsulates the interface for the parsing
14 process. It is an empty class that is used in conjuntion with the
15 RPC::XML::ParserFactory class.
16 All parser implementations that are intended to be returned by calls to
18 RPC::XML::ParserFactory::new() should declare this as their parent
19 class.
20
22 This class provides empty implementations for the following methods. A
23 parser implementation must provide definitions for both of these
24 methods. If the versions from this class are triggered they will throw
25 exceptions ("die").
26 The descriptions below define the interface that implementations must
28 adhere to.
29 new([ARGS])
31 Create a new instance of the class. Any extra data passed to the
32 constructor is taken as key/value pairs (not a hash reference) and
33 attached to the object.
34 The following parameters are currently recognized:
36 base64_to_fh
38 If passed with a true value, this tells the parser that
39 incoming Base64 data is to be spooled to a filehandle
40 opened onto an anonymous temporary file. The file itself is
41 unlinked after opening, though the resulting
42 RPC::XML::base64 object can use its "to_file" method to
43 save the data to a specific file at a later point. No
44 checks on size are made; if this option is set, all Base64
45 data goes to filehandles.
46 base64_temp_dir
48 If this argument is passed, the value is taken as the
49 directory under which the temporary files are created. This
50 is so that the application is not locked in to the list of
51 directories that File::Spec defaults to with its "tmpdir"
52 method. If this is not passed, the previously-mentioned
53 method is used to derive the directory in which to create
54 the temporary files. Only relevant if base64_to_fh is set.
55 The "base64*" parameters do not have to be implemented if the user
57 has no plans to use the "to_file" method of the RPC::XML::base64
58 data-class.
59 As a special-case, to preserve backwards compatibility with
61 pre-0.69 versions of this package, new() has special behavior when
62 specifically called for the package RPC::XML::Parser. When called
63 for this package, the constructor quietly loads
64 RPC::XML::ParserFactory and uses it to construct and return an
65 instance of a parser based on XML::Parser.
66 parse [ STRING | STREAM ]
68 Parse the XML document specified in either a string or a stream.
69 The stream may be any file descriptor, derivative of IO::Handle,
70 etc.
71 The value returned must be one of the following:
73 RPC::XML::request instance
75 When passed a valid XML-RPC request message, the return value
76 should be an instance of the RPC::XML::request class.
77 RPC::XML::response instance
79 Likewise, when passed a valid XML-RPC response, the return
80 value should be an instance of the RPC::XML::response class.
81 string containing an error message
83 If the message does not conform to either a request or a
84 response, or does not properly parse, the return value must be
85 a string containing the error message.
86 A non-blocking (push) parser instance
88 If no arguments are passed in, the return value must be a
89 parser object that implements push-parsing (non-blocking). It
90 does not have to be of the same class as the original object,
91 but it must support the remaining two methods
92 The next two methods are only called on push-parser instances, and as
94 such do not have to be implemented by the actual factory-compatible
95 parser. It is enough if the non-blocking parser instance it returns
96 from the no-argument call to parse() implements these:
97 parse_more STRING
99 Send a chunk of the current XML document to the parser for
100 processing.
101 parse_done
103 Signal the end of parsing. The return value from this should be one
104 of the same three possibilities that the direct use of parse()
105 (above) returns:
106 RPC::XML::request instance
108 RPC::XML::response instance
109 string containing an error message
110 parse_done() may also signal an error by throwing an exception.
112
114 Unless otherwises specified, routines return the object reference
115 itself upon a successful operation, and an error string (which is not a
116 blessed reference) upon error.
117
119 Please report any bugs or feature requests to "bug-rpc-xml at
120 rt.cpan.org", or through the web interface at
121 <http://rt.cpan.org/NoAuth/ReportBug.html?Queue=RPC-XML>. I will be
122 notified, and then you'll automatically be notified of progress on your
123 bug as I make changes.
124
126 · RT: CPAN's request tracker
127 <http://rt.cpan.org/NoAuth/Bugs.html?Dist=RPC-XML>
129 · AnnoCPAN: Annotated CPAN documentation
131 <http://annocpan.org/dist/RPC-XML>
133 · CPAN Ratings
135 <http://cpanratings.perl.org/d/RPC-XML>
137 · Search CPAN
139 <http://search.cpan.org/dist/RPC-XML>
141 · MetaCPAN
143 <https://metacpan.org/release/RPC-XML>
145 · Source code on GitHub
147 <http://github.com/rjray/rpc-xml>
149
151 This file and the code within are copyright (c) 2011 by Randy J. Ray.
152 Copying and distribution are permitted under the terms of the Artistic
154 License 2.0
155 (<http://www.opensource.org/licenses/artistic-license-2.0.php>) or the
156 GNU LGPL 2.1 (<http://www.opensource.org/licenses/lgpl-2.1.php>).
157
159 The XML-RPC standard is Copyright (c) 1998-2001, UserLand Software,
160 Inc. See <http://www.xmlrpc.com> for more information about the XML-
161 RPC specification.
162
164 RPC::XML, RPC::XML::ParserFactory, RPC::XML::Parser::XMLParser
165
167 Randy J. Ray <rjray@blackperl.com>
168perl v5.28.1 2011-07-23 RPC::XML::Parser(3)