1/*
2 * Copyright (C) 2009, 2010, 2011, 2012 Research In Motion Limited. All rights reserved.
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
17 */
18
19#include "config.h"
20#include "RSS10Parser.h"
21
22#include "BlackBerryPlatformAssert.h"
23#include "libxml/parser.h"
24#include "libxml/xmlwriter.h"
25
26namespace WebCore {
27
28RSS10Parser::RSS10Parser()
29{
30}
31
32bool RSS10Parser::parseBuffer(const char* buffer, int length, const char* url, const char* encoding)
33{
34    return parseXmlDoc(xmlReadMemory(buffer, length, url, encoding, XML_PARSE_NOBLANKS | XML_PARSE_NONET));
35}
36
37bool RSS10Parser::parseXmlDoc(xmlDocPtr doc)
38{
39    if (!doc)
40        return false;
41
42    xmlNode* node = xmlDocGetRootElement(doc);
43    if (!node) {
44        xmlFreeDoc(doc);
45        return false;
46    }
47
48    for (; node; node = node->next) {
49        String name(reinterpret_cast<const char*>(node->name));
50
51        if (name == "RDF") {
52            xmlNode* childnode = node->children;
53            for (; childnode; childnode = childnode->next) {
54                if (childnode->type == XML_ELEMENT_NODE) {
55                    name = String(reinterpret_cast<const char*>(childnode->name));
56                    name.makeLower();
57                    if (name == "channel") {
58                        BLACKBERRY_ASSERT(!m_root);
59                        if (!m_root)
60                            m_root = parseFeed(childnode->children);
61                    } else if (name == "item") {
62                        BLACKBERRY_ASSERT(m_root);
63                        if (m_root) {
64                            RSSItem* item = parseItem(childnode->children);
65                            if (item)
66                                m_root->m_items.append(item);
67                        }
68                    }
69                }
70            }
71        }
72    }
73
74    xmlFreeDoc(doc);
75
76    return m_root;
77}
78
79bool RSS10Parser::parseItemBaseAttribute(RSSItemBase* item, const String& name, xmlNode* node)
80{
81    if (name == "link")
82        item->m_link = textFromXMLNode(node);
83    else if (name == "title")
84        item->m_title = textFromXMLNode(node);
85    else if (name == "description")
86        item->m_description = textFromXMLNode(node);
87    else
88        return false;
89
90    return true;
91}
92
93RSSItem* RSS10Parser::parseItem(xmlNode* node)
94{
95    BLACKBERRY_ASSERT(node);
96
97    RSSItem* item = new RSSItem();
98
99    for (; node; node = node->next) {
100        String name(reinterpret_cast<const char*>(node->name));
101        name.makeLower();
102
103        parseItemBaseAttribute(item, name, node);
104    }
105
106    return item;
107}
108
109RSSFeed* RSS10Parser::parseFeed(xmlNode* node)
110{
111    BLACKBERRY_ASSERT(node);
112
113    RSSFeed* feed = new RSSFeed();
114
115    for (; node; node = node->next) {
116        String name(reinterpret_cast<const char*>(node->name));
117        name.makeLower();
118
119        parseItemBaseAttribute(feed, name, node);
120    }
121
122    return feed;
123}
124
125} // namespace WebCore
126