b59a97bde94477df057c3ffe1c24132f64e571a2
[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     exclude-result-prefixes="php">
25
26     <xsl:param name="generate-enclosure"/>
27     <xsl:param name="show-usernames"/>
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             <!--
39                 Strip the style attribute while copying elements because it may be
40                 dangerous, see:
41                 https://validator.w3.org/feed/docs/warning/DangerousStyleAttr.html
42             -->
43             <xsl:apply-templates select="@*[not(name() = 'style')]|node()"/>
44         </xsl:copy>
45     </xsl:template>
46
47     <!--
48          Anchors to external links provide the direct URL in the
49          data-expanded-url attribute, so use this in the href attribute too
50          instead of the default short URL which uses the t.co redirection
51          service.
52
53          NOTE: when creating an element, attributes must be processed _before_
54          adding the contents (either children or a value):
55          http://stackoverflow.com/questions/21984867/
56     -->
57     <xsl:template match="a[@data-expanded-url]">
58         <!-- Prepend and append a white space for aestethic reasons -->
59         <xsl:text> </xsl:text>
60         <a>
61             <xsl:attribute name="href">
62                 <xsl:value-of select="@data-expanded-url"/>
63             </xsl:attribute>
64             <!-- Also strip &nbsp; and &hellip; -->
65             <xsl:value-of select="translate(., '&#xA0;&#x2026;', '')"/>
66         </a>
67         <xsl:text> </xsl:text>
68     </xsl:template>
69
70     <!--
71          These are links to pic.twitter.com, use the direct link for those
72          too instead of the t.co redirections.
73     -->
74     <xsl:template match="a[@data-pre-embedded='true']">
75         <!-- Prepend and append a white space for aestethic reasons -->
76         <xsl:text> </xsl:text>
77         <a>
78             <xsl:attribute name="href">
79                 <xsl:value-of select="concat('https://', .)"/>
80             </xsl:attribute>
81             <xsl:value-of select="concat('https://', .)"/>
82         </a>
83         <xsl:text> </xsl:text>
84     </xsl:template>
85
86     <!-- Present images in a more convenient way -->
87     <xsl:template match="div[@data-image-url]">
88         <a>
89             <xsl:attribute name="href">
90                 <xsl:value-of select="concat(@data-image-url, ':orig')"/>
91             </xsl:attribute>
92             <img style="max-width: 100%">
93                 <xsl:attribute name="src">
94                     <xsl:value-of select="@data-image-url"/>
95                 </xsl:attribute>
96             </img>
97         </a>
98     </xsl:template>
99
100     <!-- Don't repeat background in embedded media content -->
101     <xsl:template match="div[contains(@class, 'PlayableMedia-player')]">
102         <xsl:copy>
103             <xsl:apply-templates select="@*"/>
104             <xsl:attribute name="style">
105                 <xsl:value-of select="concat(@style, '; background-repeat: no-repeat; background-size: 100% auto')"/>
106             </xsl:attribute>
107             <xsl:apply-templates select="node()"/>
108         </xsl:copy>
109     </xsl:template>
110
111     <xsl:template match="a[@data-expanded-url]" mode="enclosure">
112         <xsl:copy-of select="php:functionString('Tweeper\Tweeper::generateEnclosure', ./@data-expanded-url)"/>
113     </xsl:template>
114
115     <xsl:template match="div[@data-image-url]" mode="enclosure">
116         <xsl:copy-of select="php:functionString('Tweeper\Tweeper::generateEnclosure', concat(./@data-image-url, ':orig'))"/>
117     </xsl:template>
118
119     <xsl:variable name="screen-name" select="//div[@class='user-actions btn-group not-following ']/@data-screen-name"/>
120
121     <xsl:template match="//div[@class='permalink-inner permalink-tweet-container'] | //li[@data-item-id and @data-item-type='tweet']">
122         <xsl:variable name="user-name" select=".//div[@data-tweet-id]/@data-screen-name"/>
123         <xsl:variable name="item-content" select=".//p[contains(@class, 'js-tweet-text')]"/>
124         <xsl:variable name="item-media" select=".//div[contains(@class, 'AdaptiveMedia-container')]"/>
125         <xsl:variable name="item-permalink" select="concat($BaseURL, .//div[@data-permalink-path]/@data-permalink-path)"/>
126
127         <xsl:variable name="item-has-video" select="$item-media//*[contains(@class, 'PlayableMedia--video')]"/>
128         <xsl:variable name="item-has-gif" select="$item-media//*[contains(@class, 'PlayableMedia--gif')]"/>
129         <item>
130             <title>
131                 <xsl:if test="($show-usernames = 1) or ($screen-name != $user-name)">
132                     <xsl:value-of select="concat($user-name, ': ')"/>
133                 </xsl:if>
134                 <xsl:if test="$item-has-video">
135                     <xsl:text>(Video) </xsl:text>
136                 </xsl:if>
137                 <!--
138                      Prepend a space in front of the URLs which are not
139                      preceded by an open parenthesis, for aestethic reasons.
140                      Also, regex, I know: http://xkcd.com/1171/
141                 -->
142                 <xsl:variable
143                     name="processed-title"
144                     select="php:functionString('preg_replace', '@((?&lt;!\()(?:http[s]?://|pic.twitter.com))@', ' \1', $item-content)"/>
145                 <!-- Also strip &nbsp; and &hellip; -->
146                 <xsl:value-of select="normalize-space(translate($processed-title, '&#xA0;&#x2026;', ''))"/>
147             </title>
148             <link>
149                 <xsl:value-of select="$item-permalink"/>
150             </link>
151             <guid>
152                 <xsl:value-of select="$item-permalink"/>
153             </guid>
154             <pubDate>
155                 <xsl:variable name="timestamp" select=".//span[contains(@class, 'js-short-timestamp')]/@data-time"/>
156                 <xsl:value-of select="php:functionString('Tweeper\Tweeper::epochToRssDate', number($timestamp))"/>
157             </pubDate>
158             <description>
159                 <xsl:text disable-output-escaping="yes">&lt;![CDATA[</xsl:text>
160                 <xsl:if test="($show-usernames = 1) or ($screen-name != $user-name)">
161                     <xsl:value-of select="concat($user-name, ':')"/>
162                     <xsl:element name="br"/>
163                 </xsl:if>
164                 <xsl:if test="$item-has-video">
165                     <xsl:text> (Video)</xsl:text>
166                     <xsl:element name="br"/>
167                 </xsl:if>
168                 <xsl:if test="$item-has-gif">
169                     <xsl:text> (GIF)</xsl:text>
170                     <xsl:element name="br"/>
171                 </xsl:if>
172                 <xsl:element name="span">
173                     <xsl:attribute name="style">white-space: pre-wrap;</xsl:attribute>
174                     <xsl:apply-templates select="$item-content/node()"/>
175                 </xsl:element>
176                 <xsl:apply-templates select="$item-media/node()"/>
177                 <xsl:text disable-output-escaping="yes">]]&gt;</xsl:text>
178             </description>
179             <xsl:if test="$generate-enclosure = 1">
180                 <xsl:apply-templates select="$item-content//a[@data-expanded-url]" mode="enclosure"/>
181                 <xsl:apply-templates select="$item-media//div[@data-image-url]" mode="enclosure"/>
182             </xsl:if>
183         </item>
184     </xsl:template>
185
186     <xsl:template match="/">
187         <xsl:variable name="channel-title">
188             <xsl:choose>
189                 <xsl:when test="$screen-name != ''">
190                     <xsl:value-of select="concat('Twitter / ', $screen-name)"/>
191                 </xsl:when>
192                 <xsl:otherwise>
193                     <xsl:value-of select="concat('Twitter / ', normalize-space(//h1[1]))"/>
194                 </xsl:otherwise>
195             </xsl:choose>
196         </xsl:variable>
197         <xsl:variable name="channel-link" select="//link[@rel='canonical']/@href"/>
198         <xsl:variable name="channel-image" select="//a[contains(@class, 'profile-picture')]/@href"/>
199
200         <rss version="2.0">
201             <xsl:attribute name="xml:base"><xsl:value-of select="$BaseURL" /></xsl:attribute>
202             <channel>
203                 <generator>Tweeper</generator>
204                 <title>
205                     <xsl:value-of select="$channel-title"/>
206                 </title>
207                 <link>
208                     <xsl:value-of select="$channel-link"/>
209                 </link>
210                 <description>
211                     <xsl:value-of select="normalize-space(//div[@class='ProfileHeaderCard'])"/>
212                     <!-- The following rule should only match on hashtag URLs -->
213                     <xsl:value-of select="normalize-space(//div[@class='SearchNavigation-textContainer'])"/>
214                 </description>
215                 <xsl:if test="$channel-image != ''">
216                     <image>
217                         <title>
218                             <xsl:value-of select="$channel-title"/>
219                         </title>
220                         <link>
221                             <xsl:value-of select="$channel-link"/>
222                         </link>
223                         <url>
224                             <xsl:value-of select="$channel-image"/>
225                         </url>
226                     </image>
227                 </xsl:if>
228                 <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'))]"/>
229
230                 <!-- These rules will only match on permalink URLs -->
231                 <xsl:apply-templates select="//div[@class='permalink-inner permalink-tweet-container']"/>
232                 <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'))]"/>
233
234             </channel>
235         </rss>
236     </xsl:template>
237 </xsl:stylesheet>