2d54f3d10ae2c833e3f8b7962e47ae9b7410d764
[tweeper.git] / src / rss_converter_instagram.com.xsl
1 <!--
2   Stylesheet to convert Instagram user timelines to RSS.
3
4   Copyright (C) 2015-2018  Antonio Ospite <ao2@ao2.it>
5
6   This file is part of tweeper.
7
8   This program is free software: you can redistribute it and/or modify
9   it under the terms of the GNU General Public License as published by
10   the Free Software Foundation, either version 3 of the License, or
11   (at your option) any later version.
12
13   This program is distributed in the hope that it will be useful,
14   but WITHOUT ANY WARRANTY; without even the implied warranty of
15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16   GNU General Public License for more details.
17
18   You should have received a copy of the GNU General Public License
19   along with this program.  If not, see <http://www.gnu.org/licenses/>.
20 -->
21 <xsl:stylesheet version="1.0"
22     xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
23     xmlns:php="http://php.net/xsl"
24     xsl:extension-element-prefixes="php"
25     exclude-result-prefixes="php">
26
27     <xsl:param name="generate-enclosure"/>
28
29     <xsl:output method="xml" indent="yes"/>
30
31     <xsl:variable name="BaseURL">
32         <xsl:text>https://instagram.com</xsl:text>
33     </xsl:variable>
34
35     <xsl:variable name="user-name" select="//ProfilePage/graphql/user/username"/>
36
37     <!--
38          NOTE: some users do not specify the full name.
39
40          Remember to handle this case when using it and fall-back to the plain
41          user name when appropriate.
42     -->
43     <xsl:variable name="full-name" select="//ProfilePage/graphql/user/full_name"/>
44
45     <xsl:variable name="location-name" select="//LocationsPage/graphql/location/name"/>
46
47     <xsl:variable name="screen-name">
48         <xsl:choose>
49             <xsl:when test="$location-name != ''">
50                 <xsl:value-of select="$location-name"/>
51             </xsl:when>
52             <xsl:when test="$full-name != ''">
53                 <xsl:value-of select="$full-name"/>
54             </xsl:when>
55             <xsl:otherwise>
56                 <xsl:value-of select="$user-name"/>
57             </xsl:otherwise>
58         </xsl:choose>
59     </xsl:variable>
60
61     <xsl:template match="//edges/node">
62         <xsl:variable name="item-content-image" select="./display_url"/>
63         <xsl:variable name="item-content-caption" select="./edge_media_to_caption/edges/node/text"/>
64         <xsl:variable name="item-permalink" select="concat($BaseURL, '/p/', ./shortcode, '/')"/>
65         <item>
66             <title>
67                 <xsl:variable name="title-length" select="140"/>
68                 <xsl:variable name="item-content-title" select="normalize-space(concat($screen-name, ': ', $item-content-caption))"/>
69                 <!-- ellipsize, inspired from http://stackoverflow.com/questions/13622338 -->
70                 <xsl:choose>
71                     <xsl:when test="string-length($item-content-title) > $title-length">
72                         <xsl:variable name="truncated-length" select="$title-length - 3"/>
73                         <xsl:value-of select="substring($item-content-title, 1, $truncated-length)"/>
74                         <xsl:text>...</xsl:text>
75                     </xsl:when>
76                     <xsl:otherwise>
77                         <xsl:value-of select="$item-content-title"/>
78                     </xsl:otherwise>
79                 </xsl:choose>
80             </title>
81             <link>
82                 <xsl:value-of select="$item-permalink"/>
83             </link>
84             <guid>
85                 <xsl:value-of select="$item-permalink"/>
86             </guid>
87             <pubDate>
88                 <xsl:variable name="timestamp" select="./taken_at_timestamp"/>
89                 <xsl:value-of select="php:functionString('Tweeper\Tweeper::epochToRssDate', $timestamp)"/>
90             </pubDate>
91             <description>
92                 <xsl:text disable-output-escaping="yes">&lt;![CDATA[</xsl:text>
93                 <p>
94                     <xsl:if test="./is_video/text() = 1">
95                         (Video)
96                     </xsl:if>
97                     <xsl:value-of select="$item-content-caption"/>
98                 </p><br />
99                 <a href="{$item-permalink}"><img src="{$item-content-image}" style="max-width: 100%"/></a>
100                 <xsl:text disable-output-escaping="yes">]]&gt;</xsl:text>
101             </description>
102             <xsl:if test="$generate-enclosure = 1">
103                 <xsl:copy-of select="php:functionString('Tweeper\Tweeper::generateEnclosure', $item-content-image)"/>
104             </xsl:if>
105         </item>
106     </xsl:template>
107
108     <xsl:template match="/">
109
110         <xsl:variable name="channel-title" select="concat('Instagram / ', $screen-name)"/>
111         <xsl:variable name="channel-link">
112             <xsl:choose>
113                 <xsl:when test="$location-name != ''">
114                     <xsl:variable name="location-id" select="//LocationsPage/graphql/location/id"/>
115                     <xsl:value-of select="concat($BaseURL, '/explore/locations/', $location-id)"/>
116                 </xsl:when>
117                 <xsl:otherwise>
118                     <xsl:value-of select="concat($BaseURL, '/', $user-name)"/>
119                 </xsl:otherwise>
120             </xsl:choose>
121         </xsl:variable>
122         <xsl:variable name="channel-image" select="//ProfilePage/graphql/user/profile_pic_url"/>
123
124         <rss version="2.0">
125             <xsl:attribute name="xml:base"><xsl:value-of select="$BaseURL" /></xsl:attribute>
126             <channel>
127                 <generator>Tweeper</generator>
128                 <title>
129                     <xsl:value-of select="$channel-title"/>
130                 </title>
131                 <link>
132                     <xsl:value-of select="$channel-link"/>
133                 </link>
134                 <description>
135                     <xsl:text disable-output-escaping="yes">&lt;![CDATA[</xsl:text>
136                     <xsl:value-of select="normalize-space(concat($screen-name, '. ', //user/biography))"/>
137                     <xsl:if test="$location-name != ''">
138                         <xsl:variable name="location-latitude" select="//LocationsPage/graphql/location/lat"/>
139                         <xsl:variable name="location-longitude" select="//LocationsPage/graphql/location/lng"/>
140                         <xsl:value-of select="concat(' (', $location-latitude, ', ', $location-longitude, ')')"/>
141                     </xsl:if>
142                     <xsl:variable name="external-url" select="//user/external_url"/>
143                     <xsl:if test="$external-url != ''">
144                         <xsl:text> </xsl:text><a href="{$external-url}"><xsl:value-of select="$external-url"/></a>
145                     </xsl:if>
146                     <xsl:text disable-output-escaping="yes">]]&gt;</xsl:text>
147                 </description>
148                 <xsl:if test="$channel-image != ''">
149                     <image>
150                         <title>
151                             <xsl:value-of select="$channel-title"/>
152                         </title>
153                         <link>
154                             <xsl:value-of select="$channel-link"/>
155                         </link>
156                         <url>
157                             <xsl:value-of select="$channel-image"/>
158                         </url>
159                     </image>
160                 </xsl:if>
161                 <xsl:apply-templates select="//ProfilePage/graphql/user/edge_owner_to_timeline_media/edges/node|//LocationsPage/graphql/location/edge_location_to_media/edges/node"/>
162             </channel>
163         </rss>
164     </xsl:template>
165 </xsl:stylesheet>