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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 | 20 | |
f612dbe8 AD |
21 | mb_substitute_character("none"); |
22 | ||
d1f3fa97 AD |
23 | $error = libxml_get_last_error(); |
24 | ||
4f00f55c | 25 | // libxml compiled without iconv? |
5fa36a64 | 26 | if ($error && $error->code == 32) { |
27 | if (preg_match('/^(<\?xml[\t\n\r ].*?encoding[\t\n\r ]*=[\t\n\r ]*["\'])(.+?)(["\'].*?\?>)/s', $data, $matches) === 1) { | |
28 | $data = mb_convert_encoding($data, 'UTF-8', $matches[2]); | |
f612dbe8 | 29 | |
f8160106 | 30 | $data = preg_replace('/^<\?xml[\t\n\r ].*?\?>/s', $matches[1] . "UTF-8" . $matches[3] , $data); |
4f00f55c | 31 | |
f612dbe8 AD |
32 | if ($data) { |
33 | libxml_clear_errors(); | |
34 | ||
35 | $this->doc = new DOMDocument(); | |
36 | $this->doc->loadXML($data); | |
37 | ||
38 | $error = libxml_get_last_error(); | |
39 | } | |
5fa36a64 | 40 | } |
4f00f55c AD |
41 | } |
42 | ||
43 | // some terrible invalid unicode entity? | |
5fa36a64 | 44 | if ($error) { |
4d49863f | 45 | foreach (libxml_get_errors() as $err) { |
5fa36a64 | 46 | if ($err->code == 9) { |
47 | // remove dangling bytes | |
48 | $data = mb_convert_encoding($data, 'UTF-8', 'UTF-8'); | |
4d49863f | 49 | |
5fa36a64 | 50 | // apparently not all UTF-8 characters are valid for XML |
51 | $data = preg_replace('/[^\x{0009}\x{000a}\x{000d}\x{0020}-\x{D7FF}\x{E000}-\x{FFFD}]+/u', ' ', $data); | |
52 | ||
53 | if ($data) { | |
54 | libxml_clear_errors(); | |
55 | ||
56 | $this->doc = new DOMDocument(); | |
57 | $this->doc->loadXML($data); | |
58 | ||
59 | $error = libxml_get_last_error(); | |
60 | } | |
61 | break; | |
62 | } | |
f612dbe8 | 63 | } |
d1f3fa97 | 64 | } |
4d49863f | 65 | |
d3305ff8 | 66 | $this->error = ""; |
4d49863f AD |
67 | if ($error) { |
68 | foreach (libxml_get_errors() as $error) { | |
69 | if ($error->level == LIBXML_ERR_FATAL) { | |
d3305ff8 | 70 | $this->error = $this->format_error($error); |
71 | break; //break here because currently we only show one error | |
72 | } | |
4d49863f | 73 | } |
d3305ff8 | 74 | } |
cd07592c AD |
75 | libxml_clear_errors(); |
76 | ||
77 | $this->items = array(); | |
78 | } | |
79 | ||
80 | function init() { | |
81 | $root = $this->doc->firstChild; | |
04d2f9c8 AD |
82 | $xpath = new DOMXPath($this->doc); |
83 | $xpath->registerNamespace('atom', 'http://www.w3.org/2005/Atom'); | |
a3b9fd12 | 84 | $xpath->registerNamespace('atom03', 'http://purl.org/atom/ns#'); |
4c00e15b | 85 | $xpath->registerNamespace('media', 'http://search.yahoo.com/mrss/'); |
852d4ac8 | 86 | $xpath->registerNamespace('rdf', 'http://www.w3.org/1999/02/22-rdf-syntax-ns#'); |
d4992d6b AD |
87 | $xpath->registerNamespace('slash', 'http://purl.org/rss/1.0/modules/slash/'); |
88 | $xpath->registerNamespace('dc', 'http://purl.org/dc/elements/1.1/'); | |
8a95d630 | 89 | $xpath->registerNamespace('content', 'http://purl.org/rss/1.0/modules/content/'); |
d4992d6b | 90 | |
b9eee80e | 91 | $this->xpath = $xpath; |
04d2f9c8 | 92 | |
a9000b03 | 93 | $root = $xpath->query("(//atom03:feed|//atom:feed|//channel|//rdf:rdf|//rdf:RDF)"); |
cd07592c AD |
94 | |
95 | if ($root) { | |
a9000b03 AD |
96 | $root = $root->item(0); |
97 | ||
98 | if ($root) { | |
99 | switch (mb_strtolower($root->tagName)) { | |
100 | case "rdf:rdf": | |
101 | $this->type = $this::FEED_RDF; | |
102 | break; | |
103 | case "channel": | |
104 | $this->type = $this::FEED_RSS; | |
105 | break; | |
106 | case "feed": | |
107 | $this->type = $this::FEED_ATOM; | |
108 | break; | |
109 | default: | |
110 | if( !isset($this->error) ){ | |
111 | $this->error = "Unknown/unsupported feed type"; | |
112 | } | |
113 | return; | |
349c4229 | 114 | } |
cd07592c AD |
115 | } |
116 | ||
cd07592c AD |
117 | switch ($this->type) { |
118 | case $this::FEED_ATOM: | |
cd07592c AD |
119 | |
120 | $title = $xpath->query("//atom:feed/atom:title")->item(0); | |
121 | ||
a3b9fd12 AD |
122 | if (!$title) |
123 | $title = $xpath->query("//atom03:feed/atom03:title")->item(0); | |
124 | ||
125 | ||
cd07592c AD |
126 | if ($title) { |
127 | $this->title = $title->nodeValue; | |
128 | } | |
129 | ||
130 | $link = $xpath->query("//atom:feed/atom:link[not(@rel)]")->item(0); | |
131 | ||
a3b9fd12 AD |
132 | if (!$link) |
133 | $link = $xpath->query("//atom03:feed/atom03:link[not(@rel)]")->item(0); | |
134 | ||
135 | ||
cd07592c AD |
136 | if ($link && $link->hasAttributes()) { |
137 | $this->link = $link->getAttribute("href"); | |
138 | } | |
139 | ||
140 | $articles = $xpath->query("//atom:entry"); | |
141 | ||
a3b9fd12 AD |
142 | if (!$articles || $articles->length == 0) |
143 | $articles = $xpath->query("//atom03:entry"); | |
144 | ||
cd07592c | 145 | foreach ($articles as $article) { |
4c00e15b | 146 | array_push($this->items, new FeedItem_Atom($article, $this->doc, $this->xpath)); |
cd07592c AD |
147 | } |
148 | ||
cd07592c AD |
149 | break; |
150 | case $this::FEED_RSS: | |
04d2f9c8 AD |
151 | $title = $xpath->query("//channel/title")->item(0); |
152 | ||
153 | if ($title) { | |
154 | $this->title = $title->nodeValue; | |
155 | } | |
156 | ||
157 | $link = $xpath->query("//channel/link")->item(0); | |
158 | ||
1874c8d6 AD |
159 | if ($link) { |
160 | if ($link->getAttribute("href")) | |
161 | $this->link = $link->getAttribute("href"); | |
162 | else if ($link->nodeValue) | |
163 | $this->link = $link->nodeValue; | |
04d2f9c8 AD |
164 | } |
165 | ||
166 | $articles = $xpath->query("//channel/item"); | |
167 | ||
168 | foreach ($articles as $article) { | |
4c00e15b | 169 | array_push($this->items, new FeedItem_RSS($article, $this->doc, $this->xpath)); |
04d2f9c8 AD |
170 | } |
171 | ||
cd07592c | 172 | break; |
852d4ac8 AD |
173 | case $this::FEED_RDF: |
174 | $xpath->registerNamespace('rssfake', 'http://purl.org/rss/1.0/'); | |
175 | ||
176 | $title = $xpath->query("//rssfake:channel/rssfake:title")->item(0); | |
177 | ||
178 | if ($title) { | |
179 | $this->title = $title->nodeValue; | |
180 | } | |
181 | ||
182 | $link = $xpath->query("//rssfake:channel/rssfake:link")->item(0); | |
183 | ||
184 | if ($link) { | |
185 | $this->link = $link->nodeValue; | |
186 | } | |
187 | ||
188 | $articles = $xpath->query("//rssfake:item"); | |
189 | ||
190 | foreach ($articles as $article) { | |
191 | array_push($this->items, new FeedItem_RSS($article, $this->doc, $this->xpath)); | |
192 | } | |
193 | ||
194 | break; | |
195 | ||
cd07592c | 196 | } |
852d4ac8 | 197 | } else { |
349c4229 | 198 | if( !isset($this->error) ){ |
199 | $this->error = "Unknown/unsupported feed type"; | |
200 | } | |
852d4ac8 | 201 | return; |
cd07592c AD |
202 | } |
203 | } | |
204 | ||
205 | function format_error($error) { | |
206 | if ($error) { | |
207 | return sprintf("LibXML error %s at line %d (column %d): %s", | |
208 | $error->code, $error->line, $error->column, | |
209 | $error->message); | |
210 | } else { | |
211 | return ""; | |
212 | } | |
213 | } | |
214 | ||
215 | function error() { | |
216 | return $this->error; | |
217 | } | |
218 | ||
219 | function get_link() { | |
220 | return $this->link; | |
221 | } | |
222 | ||
223 | function get_title() { | |
224 | return $this->title; | |
225 | } | |
226 | ||
227 | function get_items() { | |
228 | return $this->items; | |
229 | } | |
230 | ||
b9eee80e AD |
231 | function get_links($rel) { |
232 | $rv = array(); | |
233 | ||
234 | switch ($this->type) { | |
235 | case $this::FEED_ATOM: | |
236 | $links = $this->xpath->query("//atom:feed/atom:link"); | |
237 | ||
238 | foreach ($links as $link) { | |
239 | if (!$rel || $link->hasAttribute('rel') && $link->getAttribute('rel') == $rel) { | |
240 | array_push($rv, $link->getAttribute('href')); | |
241 | } | |
242 | } | |
243 | break; | |
244 | case $this::FEED_RSS: | |
f17c3ee2 AD |
245 | $links = $this->xpath->query("//atom:link"); |
246 | ||
3c8060ac AD |
247 | foreach ($links as $link) { |
248 | if (!$rel || $link->hasAttribute('rel') && $link->getAttribute('rel') == $rel) { | |
249 | array_push($rv, $link->getAttribute('href')); | |
250 | } | |
b9eee80e AD |
251 | } |
252 | break; | |
253 | } | |
254 | ||
255 | return $rv; | |
256 | } | |
cd07592c | 257 | } ?> |