1<?php
2
3/**
4 * AtomCreator10 is a FeedCreator that implements the atom specification,
5 * as in http://www.atomenabled.org/developers/syndication/atom-format-spec.php
6 * Please note that just by using AtomCreator10 you won't automatically
7 * produce valid atom files. For example, you have to specify either an editor
8 * for the feed or an author for every single feed item.
9 * Some elements have not been implemented yet. These are (incomplete list):
10 * author URL, item author's email and URL, item contents, alternate links,
11 * other link content types than text/html. Some of them may be created with
12 * AtomCreator10::additionalElements.
13 *
14 * @see     FeedCreator#additionalElements
15 * @since   1.7.2-mod (modified)
16 * @author  Mohammad Hafiz Ismail (mypapit@gmail.com)
17 */
18class AtomCreator10 extends FeedCreator
19{
20
21    /**
22     * AtomCreator10 constructor.
23     */
24    public function __construct()
25    {
26        $this->contentType = "application/atom+xml";
27        $this->encoding = "utf-8";
28    }
29
30    /** @inheritdoc */
31    public function createFeed()
32    {
33        $feed = "<?xml version=\"1.0\" encoding=\"".$this->encoding."\"?>\n";
34        $feed .= $this->_createGeneratorComment();
35        $feed .= $this->_createStylesheetReferences();
36        $feed .= "<feed xmlns=\"http://www.w3.org/2005/Atom\"";
37        if (!empty($this->items[0]->lat)) {
38            $feed .= " xmlns:georss=\"http://www.georss.org/georss\"\n";
39        }
40        if ($this->language != "") {
41            $feed .= " xml:lang=\"".$this->language."\"";
42        }
43        $feed .= ">\n";
44        $feed .= "    <title>".htmlspecialchars($this->title)."</title>\n";
45        $feed .= "    <subtitle>".htmlspecialchars($this->description)."</subtitle>\n";
46        $feed .= "    <link rel=\"alternate\" type=\"text/html\" href=\"".htmlspecialchars($this->link)."\"/>\n";
47        $feed .= "    <id>".htmlspecialchars($this->link)."</id>\n";
48        $now = new FeedDate();
49        $feed .= "    <updated>".htmlspecialchars($now->iso8601())."</updated>\n";
50        if ($this->editor != "") {
51            $feed .= "    <author>\n";
52            $feed .= "        <name>".$this->editor."</name>\n";
53            if ($this->editorEmail != "") {
54                $feed .= "        <email>".$this->editorEmail."</email>\n";
55            }
56            $feed .= "    </author>\n";
57        }
58        if ($this->category != "") {
59
60            $feed .= "    <category term=\"".htmlspecialchars($this->category)."\" />\n";
61        }
62        if ($this->copyright != "") {
63            $feed .= "    <rights>".FeedCreator::iTrunc(htmlspecialchars($this->copyright), 100)."</rights>\n";
64        }
65        $feed .= "    <generator>".$this->version()."</generator>\n";
66
67        $feed .= "    <link rel=\"self\" type=\"application/atom+xml\" href=\"".htmlspecialchars(
68                $this->syndicationURL
69            )."\" />\n";
70        $feed .= $this->_createAdditionalElements($this->additionalElements, "    ");
71        for ($i = 0; $i < count($this->items); $i++) {
72            $feed .= "    <entry>\n";
73            $feed .= "        <title>".htmlspecialchars(strip_tags($this->items[$i]->title))."</title>\n";
74            $feed .= "        <link rel=\"alternate\" type=\"text/html\" href=\"".htmlspecialchars(
75                    $this->items[$i]->link
76                )."\"/>\n";
77            if ($this->items[$i]->date == "") {
78                $this->items[$i]->date = time();
79            }
80            $itemDate = new FeedDate($this->items[$i]->date);
81            $feed .= "        <published>".htmlspecialchars($itemDate->iso8601())."</published>\n";
82            $feed .= "        <updated>".htmlspecialchars($itemDate->iso8601())."</updated>\n";
83
84            $tempguid = $this->items[$i]->link;
85            if ($this->items[$i]->guid != "") {
86                $tempguid = $this->items[$i]->guid;
87            }
88
89            $feed .= "        <id>".htmlspecialchars($tempguid)."</id>\n";
90            $feed .= $this->_createAdditionalElements($this->items[$i]->additionalElements, "        ");
91            if ($this->items[$i]->author != "") {
92                $feed .= "        <author>\n";
93                $feed .= "            <name>".htmlspecialchars($this->items[$i]->author)."</name>\n";
94                if ($this->items[$i]->authorEmail != "") {
95                    $feed .= "            <email>".htmlspecialchars($this->items[$i]->authorEmail)."</email>\n";
96                }
97
98                if ($this->items[$i]->authorURL != "") {
99                    $feed .= "            <uri>".htmlspecialchars($this->items[$i]->authorURL)."</uri>\n";
100                }
101
102                $feed .= "        </author>\n";
103            }
104
105            if (!empty($this->items[$i]->category)) {
106                foreach ((array) $this->items[$i]->category as $category) {
107                    $feed .= "        <category ";
108
109                    if ($this->items[$i]->categoryScheme != "") {
110                        $feed .= " scheme=\"".htmlspecialchars($this->items[$i]->categoryScheme)."\" ";
111                    }
112
113                    $feed .= " term=\"".htmlspecialchars($category)."\" />\n";
114                }
115            }
116
117            if ($this->items[$i]->description != "") {
118
119                /*
120                 * ATOM should have at least summary tag, however this implementation may be inaccurate
121                */
122                $tempdesc = $this->items[$i]->getDescription();
123                $temptype = "";
124
125                if ($this->items[$i]->descriptionHtmlSyndicated) {
126                    $temptype = " type=\"html\"";
127                    $tempdesc = $this->items[$i]->getDescription();
128
129                }
130
131                if (empty($this->items[$i]->descriptionTruncSize)) {
132                    $feed .= "        <content".$temptype.">".$tempdesc."</content>\n";
133                }
134
135                $feed .= "        <summary".$temptype.">".$tempdesc."</summary>\n";
136            } else {
137
138                $feed .= "     <summary>no summary</summary>\n";
139
140            }
141
142            if ($this->items[$i]->enclosure != null) {
143                $feed .= "        <link rel=\"enclosure\" href=\"".$this->items[$i]->enclosure->url."\" type=\"".$this->items[$i]->enclosure->type."\"  length=\"".$this->items[$i]->enclosure->length."\"";
144
145                if ($this->items[$i]->enclosure->language != "") {
146                    $feed .= " xml:lang=\"".$this->items[$i]->enclosure->language."\" ";
147                }
148
149                if ($this->items[$i]->enclosure->title != "") {
150                    $feed .= " title=\"".$this->items[$i]->enclosure->title."\" ";
151                }
152
153                $feed .= " /> \n";
154            }
155            if ($this->items[$i]->lat != "") {
156                $feed .= "        <georss:point>".$this->items[$i]->lat." ".$this->items[$i]->long."</georss:point>\n";
157            }
158            $feed .= "    </entry>\n";
159        }
160        $feed .= "</feed>\n";
161
162        return $feed;
163    }
164}
165