Remove unneeded attribute extension-element-prefixes from xsl stylesheets
[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
28     <xsl:output method="xml" indent="yes"/>
29
30     <xsl:variable name="BaseURL">
31         <xsl:text>https://twitter.com</xsl:text>
32     </xsl:variable>
33
34     <!-- Identity transform -->
35     <xsl:template match="@*|node()">
36         <xsl:copy>
37             <!--
38                 Strip the style attribute while copying elements because it may be
39                 dangerous, see:
40                 https://validator.w3.org/feed/docs/warning/DangerousStyleAttr.html
41             -->
42             <xsl:apply-templates select="@*[not(name() = 'style')]|node()"/>
43         </xsl:copy>
44     </xsl:template>
45
46     <!--
47          Anchors to external links provide the direct URL in the
48          data-expanded-url attribute, so use this in the href attribute too
49          instead of the default short URL which uses the t.co redirection
50          service.
51
52          NOTE: when creating an element, attributes must be processed _before_
53          adding the contents (either children or a value):
54          http://stackoverflow.com/questions/21984867/
55     -->
56     <xsl:template match="a[@data-expanded-url]">
57         <!-- Prepend and append a white space for aestethic reasons -->
58         <xsl:text> </xsl:text>
59         <a>
60             <xsl:attribute name="href">
61                 <xsl:value-of select="@data-expanded-url"/>
62             </xsl:attribute>
63             <!-- Also strip &nbsp; and &hellip; -->
64             <xsl:value-of select="translate(., '&#xA0;&#x2026;', '')"/>
65         </a>
66         <xsl:text> </xsl:text>
67     </xsl:template>
68
69     <!--
70          These are links to pic.twitter.com, use the direct link for those
71          too instead of the t.co redirections.
72     -->
73     <xsl:template match="a[@data-pre-embedded='true']">
74         <!-- Prepend and append a white space for aestethic reasons -->
75         <xsl:text> </xsl:text>
76         <a>
77             <xsl:attribute name="href">
78                 <xsl:value-of select="concat('https://', .)"/>
79             </xsl:attribute>
80             <xsl:value-of select="concat('https://', .)"/>
81         </a>
82         <xsl:text> </xsl:text>
83     </xsl:template>
84
85     <!-- Present images in a more convenient way -->
86     <xsl:template match="div[@data-image-url]">
87         <a>
88             <xsl:attribute name="href">
89                 <xsl:value-of select="concat(@data-image-url, ':orig')"/>
90             </xsl:attribute>
91             <img style="max-width: 100%">
92                 <xsl:attribute name="src">
93                     <xsl:value-of select="@data-image-url"/>
94                 </xsl:attribute>
95             </img>
96         </a>
97     </xsl:template>
98
99     <!-- Don't repeat background in embedded media content -->
100     <xsl:template match="div[contains(@class, 'PlayableMedia-player')]">
101         <xsl:copy>
102             <xsl:apply-templates select="@*"/>
103             <xsl:attribute name="style">
104                 <xsl:value-of select="concat(@style, '; background-repeat: no-repeat; background-size: 100% auto')"/>
105             </xsl:attribute>
106             <xsl:apply-templates select="node()"/>
107         </xsl:copy>
108     </xsl:template>
109
110     <xsl:template match="a[@data-expanded-url]" mode="enclosure">
111         <xsl:copy-of select="php:functionString('Tweeper\Tweeper::generateEnclosure', ./@data-expanded-url)"/>
112     </xsl:template>
113
114     <xsl:template match="div[@data-image-url]" mode="enclosure">
115         <xsl:copy-of select="php:functionString('Tweeper\Tweeper::generateEnclosure', concat(./@data-image-url, ':orig'))"/>
116     </xsl:template>
117
118     <xsl:variable name="screen-name" select="//div[@class='user-actions btn-group not-following ']/@data-screen-name"/>
119
120     <xsl:template match="//div[@class='permalink-inner permalink-tweet-container'] | //li[@data-item-id and @data-item-type='tweet']">
121         <xsl:variable name="user-name" select=".//div[@data-tweet-id]/@data-screen-name"/>
122         <xsl:variable name="item-content" select=".//p[contains(@class, 'js-tweet-text')]"/>
123         <xsl:variable name="item-media" select=".//div[contains(@class, 'AdaptiveMedia-container')]"/>
124         <xsl:variable name="item-permalink" select="concat($BaseURL, .//div[@data-permalink-path]/@data-permalink-path)"/>
125
126         <xsl:variable name="item-has-video" select="$item-media//*[contains(@class, 'PlayableMedia--video')]"/>
127         <xsl:variable name="item-has-gif" select="$item-media//*[contains(@class, 'PlayableMedia--gif')]"/>
128         <item>
129             <title>
130                 <xsl:value-of select="concat($user-name, ': ')"/>
131                 <xsl:if test="$item-has-video">
132                     <xsl:text>(Video) </xsl:text>
133                 </xsl:if>
134                 <!--
135                      Prepend a space in front of the URLs which are not
136                      preceded by an open parenthesis, for aestethic reasons.
137                      Also, regex, I know: http://xkcd.com/1171/
138                 -->
139                 <xsl:variable
140                     name="processed-title"
141                     select="php:functionString('preg_replace', '@((?&lt;!\()(?:http[s]?://|pic.twitter.com))@', ' \1', $item-content)"/>
142                 <!-- Also strip &nbsp; and &hellip; -->
143                 <xsl:value-of select="normalize-space(translate($processed-title, '&#xA0;&#x2026;', ''))"/>
144             </title>
145             <link>
146                 <xsl:value-of select="$item-permalink"/>
147             </link>
148             <guid>
149                 <xsl:value-of select="$item-permalink"/>
150             </guid>
151             <pubDate>
152                 <xsl:variable name="timestamp" select=".//span[contains(@class, 'js-short-timestamp')]/@data-time"/>
153                 <xsl:value-of select="php:functionString('Tweeper\Tweeper::epochToRssDate', number($timestamp))"/>
154             </pubDate>
155             <description>
156                 <xsl:text disable-output-escaping="yes">&lt;![CDATA[</xsl:text>
157                 <xsl:value-of select="concat($user-name, ':')"/>
158                 <xsl:element name="br"/>
159                 <xsl:if test="$item-has-video">
160                     <xsl:text> (Video)</xsl:text>
161                     <xsl:element name="br"/>
162                 </xsl:if>
163                 <xsl:if test="$item-has-gif">
164                     <xsl:text> (GIF)</xsl:text>
165                     <xsl:element name="br"/>
166                 </xsl:if>
167                 <xsl:element name="span">
168                     <xsl:attribute name="style">white-space: pre-wrap;</xsl:attribute>
169                     <xsl:apply-templates select="$item-content/node()"/>
170                 </xsl:element>
171                 <xsl:apply-templates select="$item-media/node()"/>
172                 <xsl:text disable-output-escaping="yes">]]&gt;</xsl:text>
173             </description>
174             <xsl:if test="$generate-enclosure = 1">
175                 <xsl:apply-templates select="$item-content//a[@data-expanded-url]" mode="enclosure"/>
176                 <xsl:apply-templates select="$item-media//div[@data-image-url]" mode="enclosure"/>
177             </xsl:if>
178         </item>
179     </xsl:template>
180
181     <xsl:template match="/">
182         <xsl:variable name="channel-title">
183             <xsl:choose>
184                 <xsl:when test="$screen-name != ''">
185                     <xsl:value-of select="concat('Twitter / ', $screen-name)"/>
186                 </xsl:when>
187                 <xsl:otherwise>
188                     <xsl:value-of select="concat('Twitter / ', normalize-space(//h1[1]))"/>
189                 </xsl:otherwise>
190             </xsl:choose>
191         </xsl:variable>
192         <xsl:variable name="channel-link" select="//link[@rel='canonical']/@href"/>
193         <xsl:variable name="channel-image" select="//a[contains(@class, 'profile-picture')]/@href"/>
194
195         <rss version="2.0">
196             <xsl:attribute name="xml:base"><xsl:value-of select="$BaseURL" /></xsl:attribute>
197             <channel>
198                 <generator>Tweeper</generator>
199                 <title>
200                     <xsl:value-of select="$channel-title"/>
201                 </title>
202                 <link>
203                     <xsl:value-of select="$channel-link"/>
204                 </link>
205                 <description>
206                     <xsl:value-of select="normalize-space(//div[@class='ProfileHeaderCard'])"/>
207                     <!-- The following rule should only match on hashtag URLs -->
208                     <xsl:value-of select="normalize-space(//div[@class='SearchNavigation-textContainer'])"/>
209                 </description>
210                 <xsl:if test="$channel-image != ''">
211                     <image>
212                         <title>
213                             <xsl:value-of select="$channel-title"/>
214                         </title>
215                         <link>
216                             <xsl:value-of select="$channel-link"/>
217                         </link>
218                         <url>
219                             <xsl:value-of select="$channel-image"/>
220                         </url>
221                     </image>
222                 </xsl:if>
223                 <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'))]"/>
224
225                 <!-- These rules will only match on permalink URLs -->
226                 <xsl:apply-templates select="//div[@class='permalink-inner permalink-tweet-container']"/>
227                 <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'))]"/>
228
229             </channel>
230         </rss>
231     </xsl:template>
232 </xsl:stylesheet>