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source: trunk/phpgwapi/inc/class.rssparser.inc.php @ 2

Revision 2, 8.1 KB checked in by niltonneto, 17 years ago (diff)
Removida todas as tags usadas pelo CVS ($Id, $Source). Primeira versão no CVS externo.
Property svn:eol-style set to `native` Property svn:executable set to ``*

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1	<?php
2	/**************************************************************************\
3	* eGroupWare API - rss parser *
4	* ------------------------------------------------------------------------ *
5	* This is not part of eGroupWare, but is used by eGroupWare. *
6	* http://www.egroupware.org/ *
7	* ------------------------------------------------------------------------ *
8	* This program is free software; you can redistribute it and/or modify it *
9	* under the terms of the GNU Lesser General Public License as published *
10	* by the Free Software Foundation; either version 2.1 of the License, or *
11	* any later version. *
12	\**************************************************************************/
13
14
15	/*
16	* rssparse.php3
17	*
18	* Copyright (C) 2000 Jeremey Barrett
19	* j@nwow.org
20	* http://nwow.org
21	*
22	* Version 0.4
23	*
24	* This library is free software; you can redistribute it and/or modify
25	* it under the terms of the GNU Lesser General Public License as published by
26	* the Free Software Foundation; either version 2.1 of the License, or
27	* (at your option) any later version.
28	*
29	* This library is distributed in the hope that it will be useful,
30	* but WITHOUT ANY WARRANTY; without even the implied warranty of
31	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
32	* GNU Lesser General Public License for more details.
33	*
34	* You should have received a copy of the GNU Lesser General Public License
35	* along with this program; if not, write to the Free Software
36	* Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
37	*
38	*
39	* rssparse.php3 is a small PHP script for parsing RDF/RSS XML data. It has been
40	* tested with a number of popular web news and information sites such as
41	* slashdot.org, lwn.net, and freshmeat.net. This is not meant to be exhaustive
42	* but merely to provide the basic necessities. It will grow in capabilities
43	* with time, I'm sure.
44	*
45	* This is code I wrote for Nerds WithOut Wires, http://nwow.org.
46	*
47	*
48	* USAGE:
49	* In your PHP script, simply do something akin to this:
50	*
51	* include("rssparse.php3");
52	* $fp = fopen("file", "r");
53	* $rss = rssparse($fp);
54	*
55	* if (!$rss) {
56	* ERROR;
57	* }
58	*
59	* while (list(,$item) = each($rss->items)) {
60	* printf("Title: %s\n", $item["title"]);
61	* printf("Link: %s\n", $item["link"]);
62	* printf("Description: %s\n", $item["desc"]);
63	* }
64	*
65	* printf("Channel Title: %s\n", $rss->title);
66	* printf("Channel Description: %s\n", $rss->desc);
67	* printf("Channel Link: %s\n", $rss->link);
68	*
69	* printf("Image Title: %s\n", $rss->image["title"]);
70	* printf("Image URL: %s\n", $rss->image["url"]);
71	* printf("Image Description: %s\n", $rss->image["desc"]);
72	* printf("Image Link: %s\n", $rss->image["link"]);
73	*
74	*
75	* CHANGES:
76	* 0.4 - rssparse.php3 now supports the channel image tag and correctly supports
77	* RSS-style channels.
78	*
79	*
80	* BUGS:
81	* Width and height tags in image not supported, some other tags not supported
82	* yet.
83	*
84	*
85	* IMPORTANT NOTE:
86	* This requires PHP's XML routines. You must configure PHP with --with-xml.
87	*/
88
89	function _rssparse_start_elem ($parser, $elem, $attrs)
90	{
91	switch($elem)
92	{
93	case 'CHANNEL':
94	$GLOBALS['_rss']->depth++;
95	$GLOBALS['_rss']->state[$GLOBALS['_rss']->depth] = 'channel';
96	$GLOBALS['_rss']->tmptitle[$GLOBALS['_rss']->depth] = '';
97	$GLOBALS['_rss']->tmplink[$GLOBALS['_rss']->depth] = '';
98	$GLOBALS['_rss']->tmpdesc[$GLOBALS['_rss']->depth] = '';
99	break;
100	case 'IMAGE':
101	$GLOBALS['_rss']->depth++;
102	$GLOBALS['_rss']->state[$GLOBALS['_rss']->depth] = 'image';
103	$GLOBALS['_rss']->tmptitle[$GLOBALS['_rss']->depth] = '';
104	$GLOBALS['_rss']->tmplink[$GLOBALS['_rss']->depth] = '';
105	$GLOBALS['_rss']->tmpdesc[$GLOBALS['_rss']->depth] = '';
106	$GLOBALS['_rss']->tmpurl[$GLOBALS['_rss']->depth] = '';
107	break;
108	case 'ITEM':
109	$GLOBALS['_rss']->depth++;
110	$GLOBALS['_rss']->state[$GLOBALS['_rss']->depth] = 'item';
111	$GLOBALS['_rss']->tmptitle[$GLOBALS['_rss']->depth] = '';
112	$GLOBALS['_rss']->tmplink[$GLOBALS['_rss']->depth] = '';
113	$GLOBALS['_rss']->tmpdesc[$GLOBALS['_rss']->depth] = '';
114	break;
115	case 'TITLE':
116	$GLOBALS['_rss']->depth++;
117	$GLOBALS['_rss']->state[$GLOBALS['_rss']->depth] = 'title';
118	break;
119	case 'LINK':
120	$GLOBALS['_rss']->depth++;
121	$GLOBALS['_rss']->state[$GLOBALS['_rss']->depth] = 'link';
122	break;
123	case 'DESCRIPTION':
124	$GLOBALS['_rss']->depth++;
125	$GLOBALS['_rss']->state[$GLOBALS['_rss']->depth] = 'desc';
126	break;
127	case 'URL':
128	$GLOBALS['_rss']->depth++;
129	$GLOBALS['_rss']->state[$GLOBALS['_rss']->depth] = 'url';
130	break;
131	}
132	}
133
134	function _rssparse_end_elem ($parser, $elem)
135	{
136	switch ($elem)
137	{
138	case 'CHANNEL':
139	$GLOBALS['_rss']->set_channel(
140	$GLOBALS['_rss']->tmptitle[$GLOBALS['_rss']->depth],
141	$GLOBALS['_rss']->tmplink[$GLOBALS['_rss']->depth],
142	$GLOBALS['_rss']->tmpdesc[$GLOBALS['_rss']->depth]
143	);
144	$GLOBALS['_rss']->depth--;
145	break;
146	case 'IMAGE':
147	$GLOBALS['_rss']->set_image(
148	$GLOBALS['_rss']->tmptitle[$GLOBALS['_rss']->depth],
149	$GLOBALS['_rss']->tmplink[$GLOBALS['_rss']->depth],
150	$GLOBALS['_rss']->tmpdesc[$GLOBALS['_rss']->depth],
151	$GLOBALS['_rss']->tmpurl[$GLOBALS['_rss']->depth]
152	);
153	$GLOBALS['_rss']->depth--;
154	break;
155	case 'ITEM':
156	$GLOBALS['_rss']->add_item(
157	$GLOBALS['_rss']->tmptitle[$GLOBALS['_rss']->depth],
158	$GLOBALS['_rss']->tmplink[$GLOBALS['_rss']->depth],
159	$GLOBALS['_rss']->tmpdesc[$GLOBALS['_rss']->depth]
160	);
161	$GLOBALS['_rss']->depth--;
162	break;
163	case 'TITLE':
164	$GLOBALS['_rss']->depth--;
165	break;
166	case 'LINK':
167	$GLOBALS['_rss']->depth--;
168	break;
169	case 'DESCRIPTION':
170	$GLOBALS['_rss']->depth--;
171	break;
172	case 'URL':
173	$GLOBALS['_rss']->depth--;
174	break;
175	}
176	}
177
178	function _rssparse_elem_data ($parser, $data)
179	{
180	switch ($GLOBALS['_rss']->state[$GLOBALS['_rss']->depth])
181	{
182	case 'title':
183	$GLOBALS['_rss']->tmptitle[($GLOBALS['_rss']->depth - 1)] .= $data;
184	break;
185	case 'link';
186	$GLOBALS['_rss']->tmplink[($GLOBALS['_rss']->depth - 1)] .= $data;
187	break;
188	case 'desc':
189	$GLOBALS['_rss']->tmpdesc[($GLOBALS['_rss']->depth - 1)] .= $data;
190	break;
191	case 'url':
192	$GLOBALS['_rss']->tmpurl[($GLOBALS['_rss']->depth - 1)] .= $data;
193	break;
194	}
195	}
196
197	class rssparser
198	{
199	var $title;
200	var $link;
201	var $desc;
202	var $items = array();
203	var $nitems;
204	var $image = array();
205	var $state = array();
206	var $tmptitle = array();
207	var $tmplink = array();
208	var $tmpdesc = array();
209	var $tmpurl = array();
210	var $depth;
211
212	function rssparser()
213	{
214	$this->nitems = 0;
215	$this->depth = 0;
216	}
217
218	function set_channel($in_title, $in_link, $in_desc)
219	{
220	$this->title = $in_title;
221	$this->link = $in_link;
222	$this->desc = $in_desc;
223	}
224
225	function set_image($in_title, $in_link, $in_desc, $in_url)
226	{
227	$this->image['title'] = $in_title;
228	$this->image['link'] = $in_link;
229	$this->image['desc'] = $in_desc;
230	$this->image['url'] = $in_url;
231	}
232
233	function add_item($in_title, $in_link, $in_desc)
234	{
235	$this->items[$this->nitems]['title'] = $in_title;
236	$this->items[$this->nitems]['link'] = $in_link;
237	$this->items[$this->nitems]['desc'] = $in_desc;
238	$this->nitems++;
239	}
240
241	function parse($fp)
242	{
243	$xml_parser = xml_parser_create();
244
245	xml_set_element_handler($xml_parser, '_rssparse_start_elem', '_rssparse_end_elem');
246	xml_set_character_data_handler($xml_parser, '_rssparse_elem_data');
247
248	while ($data = fread($fp, 4096))
249	{
250	if (!xml_parse($xml_parser, $data, feof($fp)))
251	{
252	return 1;
253	}
254	}
255
256	xml_parser_free($xml_parser);
257
258	return 0;
259	}
260	}
261
262	function rssparse ($fp)
263	{
264	$GLOBALS['_rss'] = new rssparser();
265
266	if ($GLOBALS['_rss']->parse($fp))
267	{
268	return 0;
269	}
270
271	return $GLOBALS['_rss'];
272	}
273	?>

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