5a64a57a5a150f1dbb2eed54a301f95d4083526f
[tweeper.git] / rss_converter_instagram.com.xsl
1 <!--
2   Stylesheet to convert Instagram user timelines to RSS.
3
4   Copyright (C) 2015  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:template match="display_src">
36         <xsl:value-of disable-output-escaping="yes" select="php:function('Tweeper::generateEnclosure', string(text()))"/>
37     </xsl:template>
38
39     <xsl:variable name="user-name" select="//ProfilePage/user/username"/>
40
41     <!-- Some users do not specify the full name -->
42     <xsl:variable name="full-name" select="//ProfilePage/user/full_name"/>
43     <xsl:variable name="screen-name">
44         <xsl:choose>
45             <xsl:when test="$full-name != ''">
46                 <xsl:value-of select="$full-name"/>
47             </xsl:when>
48             <xsl:otherwise>
49                 <xsl:value-of select="$user-name"/>
50             </xsl:otherwise>
51         </xsl:choose>
52     </xsl:variable>
53
54     <xsl:template match="//media/nodes">
55         <xsl:variable name="item-content-image" select="./display_src"/>
56         <xsl:variable name="item-content-caption" select="./caption"/>
57         <xsl:variable name="item-permalink" select="concat($BaseURL, '/p/', ./code, '/')"/>
58         <item>
59             <title>
60                 <xsl:variable name="title-length" select="140"/>
61                 <xsl:variable name="item-content-title" select="normalize-space(concat($user-name, ': ', $item-content-caption))"/>
62                 <!-- ellipsize, inspired from http://stackoverflow.com/questions/13622338 -->
63                 <xsl:choose>
64                     <xsl:when test="string-length($item-content-title) > $title-length">
65                         <xsl:variable name="truncated-length" select="$title-length - 3"/>
66                         <xsl:value-of select="substring($item-content-title, 1, $truncated-length)"/>
67                         <xsl:text>...</xsl:text>
68                     </xsl:when>
69                     <xsl:otherwise>
70                         <xsl:value-of select="$item-content-title"/>
71                     </xsl:otherwise>
72                 </xsl:choose>
73             </title>
74             <link>
75                 <xsl:value-of select="$item-permalink"/>
76             </link>
77             <guid>
78                 <xsl:value-of select="$item-permalink"/>
79             </guid>
80             <pubDate>
81                 <xsl:variable name="timestamp" select="./date"/>
82                 <xsl:value-of select="php:functionString('Tweeper::epochToRssDate', number($timestamp))"/>
83             </pubDate>
84             <description>
85                 <xsl:text disable-output-escaping="yes">&lt;![CDATA[</xsl:text>
86                 <p>
87                     <xsl:if test="./is_video/text() = 1">
88                         (Video) 
89                     </xsl:if>
90                     <xsl:value-of select="$item-content-caption"/>
91                 </p><br />
92                 <a href="{$item-permalink}"><img src="{$item-content-image}" /></a>
93                 <xsl:text disable-output-escaping="yes">]]&gt;</xsl:text>
94             </description>
95             <xsl:if test="$generate-enclosure = 1">
96                 <xsl:apply-templates select="./display_src"/>
97             </xsl:if>
98         </item>
99     </xsl:template>
100
101     <xsl:template match="/">
102         <xsl:variable name="channel-title" select="concat('Instagram / ', $screen-name)"/>
103         <xsl:variable name="channel-link" select="concat($BaseURL, //__path)"/>
104
105         <rss version="2.0">
106             <xsl:attribute name="xml:base"><xsl:value-of select="$BaseURL" /></xsl:attribute>
107             <channel>
108                 <generator>Tweeper</generator>
109                 <title>
110                     <xsl:value-of select="$channel-title"/>
111                 </title>
112                 <link>
113                     <xsl:value-of select="$channel-link"/>
114                 </link>
115                 <description>
116                     <xsl:text disable-output-escaping="yes">&lt;![CDATA[</xsl:text>
117                     <xsl:value-of select="normalize-space(concat($screen-name, '. ', //user/biography))"/>
118                     <xsl:variable name="external-url" select="//user/external_url"/>
119                     <xsl:if test="$external-url != ''">
120                         <xsl:text> </xsl:text><a href="{$external-url}"><xsl:value-of select="$external-url"/></a>
121                     </xsl:if>
122                     <xsl:text disable-output-escaping="yes">]]&gt;</xsl:text>
123                 </description>
124                 <image>
125                     <title>
126                         <xsl:value-of select="$channel-title"/>
127                     </title>
128                     <link>
129                         <xsl:value-of select="$channel-link"/>
130                     </link>
131                     <url>
132                         <xsl:value-of select="//user/profile_pic_url"/>
133                     </url>
134                 </image>
135                 <xsl:apply-templates select="//media/nodes"/>
136             </channel>
137         </rss>
138     </xsl:template>
139 </xsl:stylesheet>