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