src/rss_converter_twitter.com.xsl: add a label to tweets containing GIFs
[tweeper.git] / src / rss_converter_twitter.com.xsl
1 <!--
2   Stylesheet to convert Twitter user timelines 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 <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://twitter.com</xsl:text>
33     </xsl:variable>
34
35     <!-- Identity transform -->
36     <xsl:template match="@*|node()">
37         <xsl:copy>
38             <xsl:apply-templates select="@*[not(name() = 'style')]|node()"/>
39         </xsl:copy>
40     </xsl:template>
41
42     <!--
43          Anchors to external links provide the direct URL in the
44          data-expanded-url attribute, so use this in the href attribute too
45          instead of the default short URL which uses the t.co redirection
46          service.
47
48          NOTE: when creating an element, attributes must be processed _before_
49          adding the contents (either children or a value):
50          http://stackoverflow.com/questions/21984867/
51     -->
52     <xsl:template match="a[@data-expanded-url]">
53         <!-- Prepend and append a white space for aestethic reasons -->
54         <xsl:text> </xsl:text>
55         <a>
56             <xsl:attribute name="href">
57                 <xsl:value-of select="@data-expanded-url"/>
58             </xsl:attribute>
59             <!-- Also strip &nbsp; and &hellip; -->
60             <xsl:value-of select="translate(., '&#xA0;&#x2026;', '')"/>
61         </a>
62         <xsl:text> </xsl:text>
63     </xsl:template>
64
65     <!--
66          These are links to pic.twitter.com, use the direct link for those
67          too instead of the t.co redirections.
68     -->
69     <xsl:template match="a[@data-pre-embedded='true']">
70         <!-- Prepend and append a white space for aestethic reasons -->
71         <xsl:text> </xsl:text>
72         <a>
73             <xsl:attribute name="href">
74                 <xsl:value-of select="concat('https://', .)"/>
75             </xsl:attribute>
76             <xsl:value-of select="concat('https://', .)"/>
77         </a>
78         <xsl:text> </xsl:text>
79     </xsl:template>
80
81     <!-- Present images in a more convenient way -->
82     <xsl:template match="div[@data-image-url]">
83         <a>
84             <xsl:attribute name="href">
85                 <xsl:value-of select="concat(@data-image-url, ':orig')"/>
86             </xsl:attribute>
87             <img style="max-width: 100%">
88                 <xsl:attribute name="src">
89                     <xsl:value-of select="@data-image-url"/>
90                 </xsl:attribute>
91             </img>
92         </a>
93     </xsl:template>
94
95     <!-- Don't repeat background in embedded media content -->
96     <xsl:template match="div[contains(@class, 'PlayableMedia-player')]">
97         <xsl:copy>
98             <xsl:apply-templates select="@*"/>
99             <xsl:attribute name="style">
100                 <xsl:value-of select="concat(@style, '; background-repeat: no-repeat; background-size: 100% auto')"/>
101             </xsl:attribute>
102             <xsl:apply-templates select="node()"/>
103         </xsl:copy>
104     </xsl:template>
105
106     <xsl:template match="a[@data-expanded-url]" mode="enclosure">
107         <xsl:copy-of select="php:functionString('Tweeper\Tweeper::generateEnclosure', ./@data-expanded-url)"/>
108     </xsl:template>
109
110     <xsl:template match="div[@data-image-url]" mode="enclosure">
111         <xsl:copy-of select="php:functionString('Tweeper\Tweeper::generateEnclosure', concat(./@data-image-url, ':orig'))"/>
112     </xsl:template>
113
114     <xsl:variable name="screen-name" select="//div[@class='user-actions btn-group not-following ']/@data-screen-name"/>
115
116     <xsl:template match="//div[@class='permalink-inner permalink-tweet-container'] | //li[@data-item-id and @data-item-type='tweet']">
117         <xsl:variable name="user-name" select=".//div[@data-tweet-id]/@data-screen-name"/>
118         <xsl:variable name="item-content" select=".//p[contains(@class, 'js-tweet-text')]"/>
119         <xsl:variable name="item-media" select=".//div[contains(@class, 'AdaptiveMedia-container')]"/>
120         <xsl:variable name="item-permalink" select="concat($BaseURL, .//div[@data-permalink-path]/@data-permalink-path)"/>
121
122         <xsl:variable name="item-has-video" select="$item-media//*[contains(@class, 'PlayableMedia--video')]"/>
123         <xsl:variable name="item-has-gif" select="$item-media//*[contains(@class, 'PlayableMedia--gif')]"/>
124         <item>
125             <title>
126                 <xsl:value-of select="concat($user-name, ': ')"/>
127                 <xsl:if test="$item-has-video">
128                     <xsl:text>(Video) </xsl:text>
129                 </xsl:if>
130                 <!--
131                      Prepend a space in front of the URLs which are not
132                      preceded by an open parenthesis, for aestethic reasons.
133                      Also, regex, I know: http://xkcd.com/1171/
134                 -->
135                 <xsl:variable
136                     name="processed-title"
137                     select="php:functionString('preg_replace', '@((?&lt;!\()(?:http[s]?://|pic.twitter.com))@', ' \1', $item-content)"/>
138                 <!-- Also strip &nbsp; and &hellip; -->
139                 <xsl:value-of select="normalize-space(translate($processed-title, '&#xA0;&#x2026;', ''))"/>
140             </title>
141             <link>
142                 <xsl:value-of select="$item-permalink"/>
143             </link>
144             <guid>
145                 <xsl:value-of select="$item-permalink"/>
146             </guid>
147             <pubDate>
148                 <xsl:variable name="timestamp" select=".//span[contains(@class, 'js-short-timestamp')]/@data-time"/>
149                 <xsl:value-of select="php:functionString('Tweeper\Tweeper::epochToRssDate', number($timestamp))"/>
150             </pubDate>
151             <description>
152                 <xsl:text disable-output-escaping="yes">&lt;![CDATA[</xsl:text>
153                 <xsl:value-of select="concat($user-name, ':')"/>
154                 <xsl:element name="br"/>
155                 <xsl:if test="$item-has-video">
156                     <xsl:text> (Video)</xsl:text>
157                     <xsl:element name="br"/>
158                 </xsl:if>
159                 <xsl:if test="$item-has-gif">
160                     <xsl:text> (GIF)</xsl:text>
161                     <xsl:element name="br"/>
162                 </xsl:if>
163                 <xsl:element name="span">
164                     <xsl:attribute name="style">white-space: pre-wrap;</xsl:attribute>
165                     <xsl:apply-templates select="$item-content/node()"/>
166                 </xsl:element>
167                 <xsl:apply-templates select="$item-media/node()"/>
168                 <xsl:text disable-output-escaping="yes">]]&gt;</xsl:text>
169             </description>
170             <xsl:if test="$generate-enclosure = 1">
171                 <xsl:apply-templates select="$item-content//a[@data-expanded-url]" mode="enclosure"/>
172                 <xsl:apply-templates select="$item-media//div[@data-image-url]" mode="enclosure"/>
173             </xsl:if>
174         </item>
175     </xsl:template>
176
177     <xsl:template match="/">
178         <xsl:variable name="channel-title">
179             <xsl:choose>
180                 <xsl:when test="$screen-name != ''">
181                     <xsl:value-of select="concat('Twitter / ', $screen-name)"/>
182                 </xsl:when>
183                 <xsl:otherwise>
184                     <xsl:value-of select="concat('Twitter / ', normalize-space(//h1[1]))"/>
185                 </xsl:otherwise>
186             </xsl:choose>
187         </xsl:variable>
188         <xsl:variable name="channel-link" select="//link[@rel='canonical']/@href"/>
189         <xsl:variable name="channel-image" select="//a[contains(@class, 'profile-picture')]/@href"/>
190
191         <rss version="2.0">
192             <xsl:attribute name="xml:base"><xsl:value-of select="$BaseURL" /></xsl:attribute>
193             <channel>
194                 <generator>Tweeper</generator>
195                 <title>
196                     <xsl:value-of select="$channel-title"/>
197                 </title>
198                 <link>
199                     <xsl:value-of select="$channel-link"/>
200                 </link>
201                 <description>
202                     <xsl:value-of select="normalize-space(//div[@class='ProfileHeaderCard'])"/>
203                     <!-- The following rule should only match on hashtag URLs -->
204                     <xsl:value-of select="normalize-space(//div[@class='SearchNavigation-textContainer'])"/>
205                 </description>
206                 <xsl:if test="$channel-image != ''">
207                     <image>
208                         <title>
209                             <xsl:value-of select="$channel-title"/>
210                         </title>
211                         <link>
212                             <xsl:value-of select="$channel-link"/>
213                         </link>
214                         <url>
215                             <xsl:value-of select="$channel-image"/>
216                         </url>
217                     </image>
218                 </xsl:if>
219                 <xsl:apply-templates select="//ol[@id='stream-items-id']/li[@data-item-id and @data-item-type='tweet' and not(contains(@class, 'has-profile-promoted-tweet'))]"/>
220
221                 <!-- These rules will only match on permalink URLs -->
222                 <xsl:apply-templates select="//div[@class='permalink-inner permalink-tweet-container']"/>
223                 <xsl:apply-templates select="//div[@data-component-context='replies']//li[@data-item-id and @data-item-type='tweet' and not(contains(@class, 'has-profile-promoted-tweet'))]"/>
224
225             </channel>
226         </rss>
227     </xsl:template>
228 </xsl:stylesheet>