99d2b279de71b10f551949a94f5d11b2774d20d1
[tweeper.git] / src / rss_converter_dilbert.com.xsl
1 <!--
2   Stylesheet to convert Dilbert daily strips to RSS.
3
4   Copyright (C) 2013-2018  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
22 <!--
23   Since June 18, 2013 dilbert.com strips are not accessible anymore
24   directly from the RSS feed, this message is displayed instead:
25
26     Dilbert readers - Please visit Dilbert.com to read this feature. Due
27     to changes with our feeds, we are now making this RSS feed a link to
28     Dilbert.com.
29
30   How unhandy is that, was it because of a management decision?
31   Maybe a parody dilbert strip is needed about this issue...
32 -->
33
34 <xsl:stylesheet version="1.0"
35     xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
36     xmlns:php="http://php.net/xsl"
37     exclude-result-prefixes="php">
38
39     <xsl:param name="generate-enclosure"/>
40
41     <xsl:output method="xml" indent="yes"/>
42
43     <xsl:variable name="BaseURL" select="//meta[@property='og:url']/@content"/>
44
45     <xsl:template match="//section[@class='comic-item']">
46         <xsl:variable name="item-permalink" select=".//a[@class='img-comic-link']/@href"/>
47         <xsl:variable name="picture-url" select=".//img[@class='img-responsive img-comic']/@src"/>
48         <xsl:variable name="picture-title" select=".//img[@class='img-responsive img-comic']/@alt"/>
49         <item>
50             <title>
51                 <xsl:variable name="title-length" select="140"/>
52                 <!-- ellipsize, inspired from http://stackoverflow.com/questions/13622338 -->
53                 <xsl:choose>
54                     <xsl:when test="string-length($picture-title) > $title-length">
55                         <xsl:variable name="truncated-length" select="$title-length - 3"/>
56                         <xsl:value-of select="substring($picture-title, 1, $truncated-length)"/>
57                         <xsl:text>...</xsl:text>
58                     </xsl:when>
59                     <xsl:otherwise>
60                         <xsl:value-of select="$picture-title"/>
61                     </xsl:otherwise>
62                 </xsl:choose>
63             </title>
64             <link>
65                 <xsl:value-of select="$item-permalink"/>
66             </link>
67             <guid>
68                 <xsl:value-of select="$item-permalink"/>
69             </guid>
70             <pubDate>
71                 <xsl:value-of select="php:functionString('Tweeper\Tweeper::strToRssDate', normalize-space(.//date))"/>
72             </pubDate>
73             <description>
74                 <xsl:text disable-output-escaping="yes">&lt;![CDATA[</xsl:text>
75                 <img src="{$picture-url}" alt="{$picture-title}"/>
76                 <xsl:text disable-output-escaping="yes">]]&gt;</xsl:text>
77             </description>
78             <xsl:if test="$generate-enclosure = 1">
79                 <xsl:copy-of select="php:functionString('Tweeper\Tweeper::generateEnclosure', $picture-url)"/>
80             </xsl:if>
81         </item>
82     </xsl:template>
83
84     <xsl:template match="/">
85         <xsl:variable name="channel-title" select="//meta[@property='og:title']/@content"/>
86         <xsl:variable name="channel-link" select="$BaseURL"/>
87
88         <rss version="2.0">
89             <xsl:attribute name="xml:base"><xsl:value-of select="$BaseURL" /></xsl:attribute>
90             <channel>
91                 <generator>Tweeper</generator>
92                 <title>
93                     <xsl:value-of select="$channel-title"/>
94                 </title>
95                 <link>
96                     <xsl:value-of select="$channel-link"/>
97                 </link>
98                 <description>
99                     <xsl:value-of select="//meta[@property='og:description']/@content"/>
100                 </description>
101                 <image>
102                     <title>
103                         <xsl:value-of select="$channel-title"/>
104                     </title>
105                     <link>
106                         <xsl:value-of select="$channel-link"/>
107                     </link>
108                     <url>
109                         <xsl:value-of select="concat($BaseURL, //img[@alt='Dilbert logo']/@src)"/>
110                     </url>
111                 </image>
112                 <xsl:apply-templates select="//section[@class='comic-item']"/>
113             </channel>
114         </rss>
115     </xsl:template>
116 </xsl:stylesheet>