mirror of
https://github.com/EGroupware/egroupware.git
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248 lines
7.3 KiB
PHP
248 lines
7.3 KiB
PHP
<?php
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/**************************************************************************\
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* phpGroupWare API - rss parser *
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* ------------------------------------------------------------------------ *
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* This is not part of phpGroupWare, but is used by phpGroupWare. *
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* http://www.phpgroupware.org/ *
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* ------------------------------------------------------------------------ *
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* This program is free software; you can redistribute it and/or modify it *
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* under the terms of the GNU Lesser General Public License as published *
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* by the Free Software Foundation; either version 2.1 of the License, or *
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* any later version. *
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\**************************************************************************/
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/* $Id$ */
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/*
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* rssparse.php3
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*
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* Copyright (C) 2000 Jeremey Barrett
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* j@nwow.org
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* http://nwow.org
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*
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* Version 0.4
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software
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* Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*
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* rssparse.php3 is a small PHP script for parsing RDF/RSS XML data. It has been
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* tested with a number of popular web news and information sites such as
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* slashdot.org, lwn.net, and freshmeat.net. This is not meant to be exhaustive
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* but merely to provide the basic necessities. It will grow in capabilities
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* with time, I'm sure.
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*
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* This is code I wrote for Nerds WithOut Wires, http://nwow.org.
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*
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*
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* USAGE:
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* In your PHP script, simply do something akin to this:
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*
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* include("rssparse.php3");
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* $fp = fopen("file", "r");
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* $rss = rssparse($fp);
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*
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* if (!$rss) {
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* ERROR;
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* }
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*
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* while (list(,$item) = each($rss->items)) {
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* printf("Title: %s\n", $item["title"]);
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* printf("Link: %s\n", $item["link"]);
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* printf("Description: %s\n", $item["desc"]);
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* }
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*
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* printf("Channel Title: %s\n", $rss->title);
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* printf("Channel Description: %s\n", $rss->desc);
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* printf("Channel Link: %s\n", $rss->link);
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*
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* printf("Image Title: %s\n", $rss->image["title"]);
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* printf("Image URL: %s\n", $rss->image["url"]);
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* printf("Image Description: %s\n", $rss->image["desc"]);
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* printf("Image Link: %s\n", $rss->image["link"]);
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*
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*
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* CHANGES:
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* 0.4 - rssparse.php3 now supports the channel image tag and correctly supports
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* RSS-style channels.
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*
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*
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* BUGS:
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* Width and height tags in image not supported, some other tags not supported
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* yet.
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*
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*
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* IMPORTANT NOTE:
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* This requires PHP's XML routines. You must configure PHP with --with-xml.
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*/
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function _rssparse_start_elem ($parser, $elem, $attrs) {
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global $_rss;
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if ($elem == "CHANNEL") {
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$_rss->depth++;
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$_rss->state[$_rss->depth] = "channel";
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$_rss->tmptitle[$_rss->depth] = "";
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$_rss->tmplink[$_rss->depth] = "";
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$_rss->tmpdesc[$_rss->depth] = "";
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}
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else if ($elem == "IMAGE") {
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$_rss->depth++;
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$_rss->state[$_rss->depth] = "image";
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$_rss->tmptitle[$_rss->depth] = "";
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$_rss->tmplink[$_rss->depth] = "";
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$_rss->tmpdesc[$_rss->depth] = "";
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$_rss->tmpurl[$_rss->depth] = "";
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}
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else if ($elem == "ITEM") {
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$_rss->depth++;
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$_rss->state[$_rss->depth] = "item";
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$_rss->tmptitle[$_rss->depth] = "";
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$_rss->tmplink[$_rss->depth] = "";
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$_rss->tmpdesc[$_rss->depth] = "";
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}
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else if ($elem == "TITLE") {
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$_rss->depth++;
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$_rss->state[$_rss->depth] = "title";
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}
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else if ($elem == "LINK") {
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$_rss->depth++;
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$_rss->state[$_rss->depth] = "link";
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}
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else if ($elem == "DESCRIPTION") {
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$_rss->depth++;
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$_rss->state[$_rss->depth] = "desc";
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}
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else if ($elem == "URL") {
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$_rss->depth++;
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$_rss->state[$_rss->depth] = "url";
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}
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}
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function _rssparse_end_elem ($parser, $elem) {
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global $_rss;
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if ($elem == "CHANNEL") {
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$_rss->set_channel($_rss->tmptitle[$_rss->depth], $_rss->tmplink[$_rss->depth], $_rss->tmpdesc[$_rss->depth]);
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$_rss->depth--;
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}
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else if ($elem == "IMAGE") {
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$_rss->set_image($_rss->tmptitle[$_rss->depth], $_rss->tmplink[$_rss->depth], $_rss->tmpdesc[$_rss->depth], $_rss->tmpurl[$_rss->depth]);
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$_rss->depth--;
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}
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else if ($elem == "ITEM") {
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$_rss->add_item($_rss->tmptitle[$_rss->depth], $_rss->tmplink[$_rss->depth], $_rss->tmpdesc[$_rss->depth]);
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$_rss->depth--;
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}
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else if ($elem == "TITLE") {
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$_rss->depth--;
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}
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else if ($elem == "LINK") {
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$_rss->depth--;
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}
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else if ($elem == "DESCRIPTION") {
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$_rss->depth--;
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}
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else if ($elem == "URL") {
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$_rss->depth--;
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}
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}
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function _rssparse_elem_data ($parser, $data) {
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global $_rss;
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if ($_rss->state[$_rss->depth] == "title") {
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$_rss->tmptitle[($_rss->depth - 1)] .= $data;
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}
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else if ($_rss->state[$_rss->depth] == "link") {
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$_rss->tmplink[($_rss->depth - 1)] .= $data;
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}
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else if ($_rss->state[$_rss->depth] == "desc") {
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$_rss->tmpdesc[($_rss->depth - 1)] .= $data;
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}
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else if ($_rss->state[$_rss->depth] == "url") {
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$_rss->tmpurl[($_rss->depth - 1)] .= $data;
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}
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}
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class rssparser {
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var $title;
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var $link;
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var $desc;
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var $items = array();
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var $nitems;
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var $image = array();
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var $state = array();
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var $tmptitle = array();
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var $tmplink = array();
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var $tmpdesc = array();
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var $tmpurl = array();
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var $depth;
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function rssparser() {
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$this->nitems = 0;
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$this->depth = 0;
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}
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function set_channel($in_title, $in_link, $in_desc) {
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$this->title = $in_title;
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$this->link = $in_link;
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$this->desc = $in_desc;
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}
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function set_image($in_title, $in_link, $in_desc, $in_url) {
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$this->image["title"] = $in_title;
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$this->image["link"] = $in_link;
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$this->image["desc"] = $in_desc;
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$this->image["url"] = $in_url;
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}
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function add_item($in_title, $in_link, $in_desc) {
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$this->items[$this->nitems]["title"] = $in_title;
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$this->items[$this->nitems]["link"] = $in_link;
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$this->items[$this->nitems]["desc"] = $in_desc;
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$this->nitems++;
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}
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function parse($fp) {
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$xml_parser = xml_parser_create();
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xml_set_element_handler($xml_parser, "_rssparse_start_elem", "_rssparse_end_elem");
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xml_set_character_data_handler($xml_parser, "_rssparse_elem_data");
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while ($data = fread($fp, 4096)) {
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if (!xml_parse($xml_parser, $data, feof($fp))) {
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return 1;
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}
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}
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xml_parser_free($xml_parser);
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return 0;
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}
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}
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function rssparse ($fp) {
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global $_rss;
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$_rss = new rssparser();
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if ($_rss->parse($fp)) {
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return 0;
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}
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return $_rss;
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}
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?>
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