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Commit | Line | Data |
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cd07592c AD |
1 | <?php |
2 | class FeedParser { | |
3 | private $doc; | |
4 | private $error; | |
5 | private $items; | |
6 | private $link; | |
7 | private $title; | |
8 | private $type; | |
b9eee80e | 9 | private $xpath; |
cd07592c AD |
10 | |
11 | const FEED_RDF = 0; | |
12 | const FEED_RSS = 1; | |
13 | const FEED_ATOM = 2; | |
14 | ||
15 | function __construct($data) { | |
16 | libxml_use_internal_errors(true); | |
17 | libxml_clear_errors(); | |
18 | $this->doc = new DOMDocument(); | |
19 | $this->doc->loadXML($data); | |
d1f3fa97 AD |
20 | |
21 | $error = libxml_get_last_error(); | |
22 | ||
23 | if ($error && $error->code == 9) { | |
24 | libxml_clear_errors(); | |
25 | ||
26 | // we might want to try guessing input encoding here too | |
27 | $data = iconv("UTF-8", "UTF-8//IGNORE", $data); | |
28 | ||
29 | $this->doc = new DOMDocument(); | |
30 | $this->doc->loadXML($data); | |
31 | ||
32 | $error = libxml_get_last_error(); | |
33 | } | |
34 | ||
35 | $this->error = $this->format_error($error); | |
cd07592c AD |
36 | libxml_clear_errors(); |
37 | ||
38 | $this->items = array(); | |
39 | } | |
40 | ||
41 | function init() { | |
42 | $root = $this->doc->firstChild; | |
04d2f9c8 AD |
43 | $xpath = new DOMXPath($this->doc); |
44 | $xpath->registerNamespace('atom', 'http://www.w3.org/2005/Atom'); | |
a3b9fd12 | 45 | $xpath->registerNamespace('atom03', 'http://purl.org/atom/ns#'); |
4c00e15b | 46 | $xpath->registerNamespace('media', 'http://search.yahoo.com/mrss/'); |
852d4ac8 | 47 | $xpath->registerNamespace('rdf', 'http://www.w3.org/1999/02/22-rdf-syntax-ns#'); |
d4992d6b AD |
48 | $xpath->registerNamespace('slash', 'http://purl.org/rss/1.0/modules/slash/'); |
49 | $xpath->registerNamespace('dc', 'http://purl.org/dc/elements/1.1/'); | |
8a95d630 | 50 | $xpath->registerNamespace('content', 'http://purl.org/rss/1.0/modules/content/'); |
d4992d6b | 51 | |
b9eee80e | 52 | $this->xpath = $xpath; |
04d2f9c8 | 53 | |
a9000b03 | 54 | $root = $xpath->query("(//atom03:feed|//atom:feed|//channel|//rdf:rdf|//rdf:RDF)"); |
cd07592c AD |
55 | |
56 | if ($root) { | |
a9000b03 AD |
57 | $root = $root->item(0); |
58 | ||
59 | if ($root) { | |
60 | switch (mb_strtolower($root->tagName)) { | |
61 | case "rdf:rdf": | |
62 | $this->type = $this::FEED_RDF; | |
63 | break; | |
64 | case "channel": | |
65 | $this->type = $this::FEED_RSS; | |
66 | break; | |
67 | case "feed": | |
68 | $this->type = $this::FEED_ATOM; | |
69 | break; | |
70 | default: | |
71 | if( !isset($this->error) ){ | |
72 | $this->error = "Unknown/unsupported feed type"; | |
73 | } | |
74 | return; | |
349c4229 | 75 | } |
cd07592c AD |
76 | } |
77 | ||
cd07592c AD |
78 | switch ($this->type) { |
79 | case $this::FEED_ATOM: | |
cd07592c AD |
80 | |
81 | $title = $xpath->query("//atom:feed/atom:title")->item(0); | |
82 | ||
a3b9fd12 AD |
83 | if (!$title) |
84 | $title = $xpath->query("//atom03:feed/atom03:title")->item(0); | |
85 | ||
86 | ||
cd07592c AD |
87 | if ($title) { |
88 | $this->title = $title->nodeValue; | |
89 | } | |
90 | ||
91 | $link = $xpath->query("//atom:feed/atom:link[not(@rel)]")->item(0); | |
92 | ||
a3b9fd12 AD |
93 | if (!$link) |
94 | $link = $xpath->query("//atom03:feed/atom03:link[not(@rel)]")->item(0); | |
95 | ||
96 | ||
cd07592c AD |
97 | if ($link && $link->hasAttributes()) { |
98 | $this->link = $link->getAttribute("href"); | |
99 | } | |
100 | ||
101 | $articles = $xpath->query("//atom:entry"); | |
102 | ||
a3b9fd12 AD |
103 | if (!$articles || $articles->length == 0) |
104 | $articles = $xpath->query("//atom03:entry"); | |
105 | ||
cd07592c | 106 | foreach ($articles as $article) { |
f150f85a | 107 | array_push($this->items, new FeedItem_Atom($article, $this->doc, $this->xpath)); |
cd07592c AD |
108 | } |
109 | ||
cd07592c AD |
110 | break; |
111 | case $this::FEED_RSS: | |
04d2f9c8 AD |
112 | $title = $xpath->query("//channel/title")->item(0); |
113 | ||
114 | if ($title) { | |
115 | $this->title = $title->nodeValue; | |
116 | } | |
117 | ||
118 | $link = $xpath->query("//channel/link")->item(0); | |
119 | ||
1874c8d6 AD |
120 | if ($link) { |
121 | if ($link->getAttribute("href")) | |
122 | $this->link = $link->getAttribute("href"); | |
123 | else if ($link->nodeValue) | |
124 | $this->link = $link->nodeValue; | |
04d2f9c8 AD |
125 | } |
126 | ||
127 | $articles = $xpath->query("//channel/item"); | |
128 | ||
129 | foreach ($articles as $article) { | |
4c00e15b | 130 | array_push($this->items, new FeedItem_RSS($article, $this->doc, $this->xpath)); |
04d2f9c8 AD |
131 | } |
132 | ||
cd07592c | 133 | break; |
852d4ac8 AD |
134 | case $this::FEED_RDF: |
135 | $xpath->registerNamespace('rssfake', 'http://purl.org/rss/1.0/'); | |
136 | ||
137 | $title = $xpath->query("//rssfake:channel/rssfake:title")->item(0); | |
138 | ||
139 | if ($title) { | |
140 | $this->title = $title->nodeValue; | |
141 | } | |
142 | ||
143 | $link = $xpath->query("//rssfake:channel/rssfake:link")->item(0); | |
144 | ||
145 | if ($link) { | |
146 | $this->link = $link->nodeValue; | |
147 | } | |
148 | ||
149 | $articles = $xpath->query("//rssfake:item"); | |
150 | ||
151 | foreach ($articles as $article) { | |
152 | array_push($this->items, new FeedItem_RSS($article, $this->doc, $this->xpath)); | |
153 | } | |
154 | ||
155 | break; | |
156 | ||
cd07592c | 157 | } |
852d4ac8 | 158 | } else { |
349c4229 | 159 | if( !isset($this->error) ){ |
160 | $this->error = "Unknown/unsupported feed type"; | |
161 | } | |
852d4ac8 | 162 | return; |
cd07592c AD |
163 | } |
164 | } | |
165 | ||
166 | function format_error($error) { | |
167 | if ($error) { | |
168 | return sprintf("LibXML error %s at line %d (column %d): %s", | |
169 | $error->code, $error->line, $error->column, | |
170 | $error->message); | |
171 | } else { | |
172 | return ""; | |
173 | } | |
174 | } | |
175 | ||
176 | function error() { | |
177 | return $this->error; | |
178 | } | |
179 | ||
180 | function get_link() { | |
181 | return $this->link; | |
182 | } | |
183 | ||
184 | function get_title() { | |
185 | return $this->title; | |
186 | } | |
187 | ||
188 | function get_items() { | |
189 | return $this->items; | |
190 | } | |
191 | ||
b9eee80e AD |
192 | function get_links($rel) { |
193 | $rv = array(); | |
194 | ||
195 | switch ($this->type) { | |
196 | case $this::FEED_ATOM: | |
197 | $links = $this->xpath->query("//atom:feed/atom:link"); | |
198 | ||
199 | foreach ($links as $link) { | |
200 | if (!$rel || $link->hasAttribute('rel') && $link->getAttribute('rel') == $rel) { | |
201 | array_push($rv, $link->getAttribute('href')); | |
202 | } | |
203 | } | |
204 | break; | |
205 | case $this::FEED_RSS: | |
f17c3ee2 AD |
206 | $links = $this->xpath->query("//atom:link"); |
207 | ||
3c8060ac AD |
208 | foreach ($links as $link) { |
209 | if (!$rel || $link->hasAttribute('rel') && $link->getAttribute('rel') == $rel) { | |
210 | array_push($rv, $link->getAttribute('href')); | |
211 | } | |
b9eee80e AD |
212 | } |
213 | break; | |
214 | } | |
215 | ||
216 | return $rv; | |
217 | } | |
cd07592c | 218 | } ?> |