X-Git-Url: https://git.ladys.computer/Shrine-XSLT/blobdiff_plain/e56ab0f26f35e32120971057b6db350175672c90..f342578c88d7ed843aa221977b726bc336a37b36:/transform.xslt?ds=inline

diff --git a/transform.xslt b/transform.xslt
index 20fe4c2..876841f 100644
--- a/transform.xslt
+++ b/transform.xslt
@@ -1,6 +1,6 @@
 <!--
-This is an extremely simple XSLT transform which simply reads in a
-`template.xml` and :—
+This is a⸠n extremely simple⸡ progressively‐less‐simple X·S·L·T
+transform which simply reads in a `template.xml` and :—
 
 • Replaces the `<html:shrine-content>` element with the content of the document it is being applied to,
 
@@ -22,9 +22,13 @@ ___
 This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
 If a copy of the MPL was not distributed with this file, You can obtain one at https://mozilla.org/MPL/2.0/.
 -->
+<!DOCTYPE xslt:transform [
+	<!ENTITY Atom "http://www.w3.org/2005/Atom">
+	<!ENTITY xhtml "http://www.w3.org/1999/xhtml">
+]>
 <xslt:transform
-	xmlns:atom="http://www.w3.org/2005/Atom"
-	xmlns:html="http://www.w3.org/1999/xhtml"
+	xmlns:atom="&Atom;"
+	xmlns:html="&xhtml;"
 	xmlns:xslt="http://www.w3.org/1999/XSL/Transform"
 	version="1.0"
 >
@@ -82,14 +86,14 @@ If a copy of the MPL was not distributed with this file, You can obtain one at h
 	-->
 	<xslt:template match="*" mode="content">
 		<xslt:element name="{local-name()}">
-			<xslt:for-each select="@*[not(starts-with(name(), 'data-shrine-')) and not(name()='slot' and starts-with(., 'shrine-'))]">
+			<xslt:for-each select="@*[not(starts-with(name(), 'data-shrine-')) and not((name()='slot' or name()='itemprop') and starts-with(., 'shrine-'))]">
 				<xslt:copy/>
 			</xslt:for-each>
 			<xslt:for-each select="*|text()">
 				<xslt:choose>
 					<xslt:when test="@slot[starts-with(., 'shrine-')]">
 						<xslt:comment>
-							<text> placeholder for slotted element </text>
+							<xslt:text> placeholder for slotted element </xslt:text>
 						</xslt:comment>
 					</xslt:when>
 					<xslt:otherwise>
@@ -100,6 +104,15 @@ If a copy of the MPL was not distributed with this file, You can obtain one at h
 		</xslt:element>
 	</xslt:template>
 
+	<!--
+		Drop `<meta>` elements which only provide shrine microdata.
+	-->
+	<xslt:template match="html:meta[not(@name)][starts-with(@itemprop, 'shrine-')]" mode="content">
+		<xslt:comment>
+			<xslt:text> placeholder for metadata element </xslt:text>
+		</xslt:comment>
+	</xslt:template>
+
 	<!--
 		Process text content; just make a copy.
 	-->
@@ -124,7 +137,7 @@ If a copy of the MPL was not distributed with this file, You can obtain one at h
 	<!--
 		Process template text; just make a copy.
 	-->
-	<xslt:template match="text()" mode="content">
+	<xslt:template match="text()" mode="template">
 		<xslt:copy/>
 	</xslt:template>
 
@@ -155,10 +168,20 @@ If a copy of the MPL was not distributed with this file, You can obtain one at h
 			<xslt:for-each select="@*">
 				<xslt:copy/>
 			</xslt:for-each>
-			<xslt:if test="not($source//html:title[@slot='shrine-head'])">
-				<title>
-					<xslt:apply-templates select="$source//html:h1" mode="text"/>
-				</title>
+			<xslt:if test="not(html:title) and not($source//html:title[@slot='shrine-head'])">
+				<xslt:choose>
+					<xslt:when test="$source//*[@itemprop='shrine-title']">
+						<xslt:apply-templates select="$source//*[@itemprop='shrine-title'][1]" mode="microdata">
+							<xslt:with-param name="tagname" select="'title'"/>
+							<xslt:with-param name="plaintext" select="true()"/>
+						</xslt:apply-templates>
+					</xslt:when>
+					<xslt:when test="$source//html:h1">
+						<title>
+							<xslt:apply-templates select="$source//html:h1[1]" mode="text"/>
+						</title>
+					</xslt:when>
+				</xslt:choose>
 			</xslt:if>
 			<meta name="generator" content="https://github.com/marrus-sh/shrine-xslt"/>
 			<xslt:apply-templates mode="template"/>
@@ -169,32 +192,61 @@ If a copy of the MPL was not distributed with this file, You can obtain one at h
 	</xslt:template>
 
 	<!--
-		Process the template header.
-		Read the `@data-header` attribute of the root element, append `"-header.xml"` to the end of it, and process the resulting document.
-		If no `@data-header` attribute is provided, no header is rendered.
+		Process the template header and footer.
+		Read the corresponding `@data-header` or `@data-footer` attribute of the root element, append `"-header.xml"` or `"-footer.xml"` to the end of it, and process the resulting document.
+		If no `@data-header` or `@data-footer` attribute is provided, nothing is rendered.
 	-->
-	<xslt:template match="html:shrine-header" mode="template">
-		<xslt:for-each select="$source/*/@data-shrine-header">
-			<xslt:apply-templates select="document(concat('./', ., '-header.xml'), $template)/*" mode="content"/>
-		</xslt:for-each>
+	<xslt:template match="html:shrine-header|html:shrine-footer" mode="template">
+		<xslt:param name="context" select="'shrine-template'"/>
+		<xslt:variable name="kind" select="substring-after(local-name(), 'shrine-')"/>
+		<xslt:choose>
+			<xslt:when test="$context='shrine-template'">
+				<xslt:for-each select="$source/*/@*[name()=concat('data-shrine-', $kind)]">
+					<xslt:for-each select="document(concat('./', ., '-', $kind, '.xml'), $template)/*">
+						<xslt:element name="{local-name()}">
+							<xslt:for-each select="@*">
+								<xslt:copy/>
+							</xslt:for-each>
+							<xslt:for-each select="$source//*[@slot=concat('shrine-', $kind, '-before')]">
+								<xslt:apply-templates select="." mode="content"/>
+							</xslt:for-each>
+							<xslt:apply-templates mode="template">
+								<xslt:with-param name="context" select="concat('shrine-', $kind)"/>
+							</xslt:apply-templates>
+							<xslt:for-each select="$source//*[@slot=concat('shrine-', $kind, '-after')]">
+								<xslt:apply-templates select="." mode="content"/>
+							</xslt:for-each>
+						</xslt:element>
+					</xslt:for-each>
+				</xslt:for-each>
+			</xslt:when>
+			<xslt:otherwise>
+				<xslt:element name="{local-name()}">
+					<xslt:for-each select="@*">
+						<xslt:copy/>
+					</xslt:for-each>
+					<xslt:apply-templates mode="template"/>
+				</xslt:element>
+			</xslt:otherwise>
+		</xslt:choose>
 	</xslt:template>
 
 	<!--
-		Process the template footer.
-		Read the `@data-footer` attribute of the root element, append `"-footer.xml"` to the end of it, and process the resulting document.
-		If no `@data-footer` attribute is provided, no footer is rendered.
+		Process the content.
 	-->
-	<xslt:template match="html:shrine-footer" mode="template">
-		<xslt:for-each select="$source/*/@data-shrine-footer">
-			<xslt:apply-templates select="document(concat('./', ., '-footer.xml'), $template)/*" mode="content"/>
-		</xslt:for-each>
+	<xslt:template match="html:shrine-content" mode="template">
+		<xslt:apply-templates select="$source/*" mode="content"/>
 	</xslt:template>
 
 	<!--
-		Process the content.
+		Process miscellaneous template slots.
 	-->
-	<xslt:template match="html:shrine-content" mode="template">
-		<xslt:apply-templates select="$source/*" mode="content"/>
+	<xslt:template match="html:slot[not(ancestor::html:template)]" mode="template">
+		<xslt:param name="context" select="'shrine-template'"/>
+		<xslt:variable name="name" select="string(@name)"/>
+		<xslt:for-each select="$source//*[@slot=concat($context, '-slot-', $name)]">
+			<xslt:apply-templates select="." mode="content"/>
+		</xslt:for-each>
 	</xslt:template>
 
 	<!--
@@ -217,7 +269,7 @@ If a copy of the MPL was not distributed with this file, You can obtain one at h
 	-->
 	<xslt:template match="atom:feed" mode="feed">
 		<xslt:text>&#x0A;</xslt:text> <!-- ensure a newline between the doctype and the feed element -->
-		<feed xmlns="http://www.w3.org/2005/Atom">
+		<feed xmlns="&Atom;">
 			<xslt:for-each select="@*">
 				<xslt:copy/>
 			</xslt:for-each>
@@ -277,38 +329,97 @@ If a copy of the MPL was not distributed with this file, You can obtain one at h
 	-->
 	<xslt:template match="atom:entry[atom:link[@rel='alternate'][starts-with(@href, '/')][@type='text/html']]" mode="feed">
 		<xslt:variable name="entryhref" select="atom:link[@rel='alternate'][starts-with(@href, '/')][@type='text/html'][1]/@href"/>
+		<xslt:variable name="srchref">
+			<xslt:text>./sources</xslt:text>
+			<xslt:choose>
+				<xslt:when test="substring($entryhref, string-length($entryhref))='/'">
+					<xslt:value-of select="substring($entryhref, 1, string-length($entryhref) - 1)"/>
+					<xslt:text>.xml</xslt:text>
+				</xslt:when>
+				<xslt:when test="substring($entryhref, string-length($entryhref) - 4)='.html'">
+					<xslt:value-of select="substring($entryhref, 1, string-length($entryhref) - 4)"/>
+					<xslt:text>xml</xslt:text>
+				</xslt:when>
+				<xslt:otherwise>
+					<xslt:value-of select="$entryhref"/>
+				</xslt:otherwise>
+			</xslt:choose>
+		</xslt:variable>
+		<xslt:variable name="srcdoc" select="document($srchref)"/>
 		<xslt:text>&#x0A;&#x09;</xslt:text>
-		<entry xmlns="http://www.w3.org/2005/Atom">
+		<entry xmlns="&Atom;">
 			<xslt:for-each select="@*">
 				<xslt:copy/>
 			</xslt:for-each>
 			<xslt:apply-templates select="text()[following-sibling::*]|*" mode="feed"/>
 			<xslt:if test="not(atom:id)">
 				<xslt:text>&#x0A;&#x09;&#x09;</xslt:text>
-				<id>
-					<xslt:choose>
-						<xslt:when test="contains($baseiri, '://')">
-							<xslt:text>oai:</xslt:text>
-							<xslt:value-of select="substring-after($baseiri, '://')"/>
-							<xslt:text>:</xslt:text>
-						</xslt:when>
-						<xslt:otherwise>
-							<xslt:value-of select="$baseiri"/>
-							<xslt:text>/</xslt:text>
-						</xslt:otherwise>
-					</xslt:choose>
-					<xslt:value-of select="$entryhref"/>
-				</id>
+				<xslt:choose>
+					<xslt:when test="$srcdoc//*[@itemprop='shrine-id']">
+						<xslt:apply-templates select="$srcdoc//*[@itemprop='shrine-id'][1]" mode="microdata">
+							<xslt:with-param name="tagname" select="'id'"/>
+							<xslt:with-param name="namespace" select="'&Atom;'"/>
+							<xslt:with-param name="plaintext" select="true()"/>
+						</xslt:apply-templates>
+					</xslt:when>
+					<xslt:otherwise>
+						<id>
+							<xslt:choose>
+								<xslt:when test="contains($baseiri, '://')">
+									<xslt:text>oai:</xslt:text>
+									<xslt:value-of select="substring-after($baseiri, '://')"/>
+									<xslt:text>:</xslt:text>
+								</xslt:when>
+								<xslt:otherwise>
+									<xslt:value-of select="$baseiri"/>
+									<xslt:text>/</xslt:text>
+								</xslt:otherwise>
+							</xslt:choose>
+							<xslt:value-of select="$entryhref"/>
+						</id>
+					</xslt:otherwise>
+				</xslt:choose>
 			</xslt:if>
 			<xslt:if test="not(atom:title)">
 				<xslt:text>&#x0A;&#x09;&#x09;</xslt:text>
-				<title xml:lang="en">Untitled</title>
+				<xslt:choose>
+					<xslt:when test="$srcdoc//*[@itemprop='shrine-title']">
+						<xslt:apply-templates select="$srcdoc//*[@itemprop='shrine-title'][1]" mode="microdata">
+							<xslt:with-param name="tagname" select="'title'"/>
+							<xslt:with-param name="namespace" select="'&Atom;'"/>
+						</xslt:apply-templates>
+					</xslt:when>
+					<xslt:when test="$srcdoc//html:h1">
+						<xslt:apply-templates select="$srcdoc//html:h1[1]" mode="microdata">
+							<xslt:with-param name="tagname" select="'title'"/>
+							<xslt:with-param name="namespace" select="'&Atom;'"/>
+						</xslt:apply-templates>
+					</xslt:when>
+					<xslt:when test="$srcdoc//html:title">
+						<xslt:apply-templates select="$srcdoc//html:title[1]" mode="microdata">
+							<xslt:with-param name="tagname" select="'title'"/>
+							<xslt:with-param name="namespace" select="'&Atom;'"/>
+						</xslt:apply-templates>
+					</xslt:when>
+					<xslt:otherwise>
+						<title xml:lang="en">Untitled</title>
+					</xslt:otherwise>
+				</xslt:choose>
 			</xslt:if>
 			<xslt:if test="not(atom:updated)">
 				<xslt:text>&#x0A;&#x09;&#x09;</xslt:text>
-				<updated>
-					<xslt:value-of select="$datetime"/>
-				</updated>
+				<xslt:choose>
+					<xslt:when test="$srcdoc//*[@itemprop='shrine-updated']">
+						<xslt:apply-templates select="$srcdoc//*[@itemprop='shrine-updated'][1]" mode="microdata">
+							<xslt:with-param name="tagname" select="'updated'"/>
+							<xslt:with-param name="namespace" select="'&Atom;'"/>
+							<xslt:with-param name="plaintext" select="true()"/>
+						</xslt:apply-templates>
+					</xslt:when>
+					<xslt:otherwise>
+						<xslt:value-of select="$datetime"/>
+					</xslt:otherwise>
+				</xslt:choose>
 			</xslt:if>
 			<xslt:text>&#x0A;&#x09;</xslt:text> <!-- newline before close tag -->
 		</entry>
@@ -316,10 +427,10 @@ If a copy of the MPL was not distributed with this file, You can obtain one at h
 
 	<!--
 		Process feed link elements.
-		This simply rewrites absolute links to be relative.
+		This simply rewrites relative links to be absolute.
 	-->
 	<xslt:template match="atom:link[starts-with(@href, '/')]" mode="feed">
-		<link xmlns="http://www.w3.org/2005/Atom" rel="{@rel}" href="{$baseiri}{@href}">
+		<link xmlns="&Atom;" rel="{@rel}" href="{$baseiri}{@href}">
 			<xslt:for-each select="@*[local-name()!='rel' and local-name()!='href']">
 				<xslt:copy/>
 			</xslt:for-each>
@@ -340,6 +451,60 @@ If a copy of the MPL was not distributed with this file, You can obtain one at h
 		</xslt:choose>
 	</xslt:template>
 
+	<!--
+		Provide the appropriate microdata for the provided element.
+	-->
+	<xslt:template match="*|text()" mode="microdata">
+		<xslt:param name="tagname"/>
+		<xslt:param name="namespace"/>
+		<xslt:param name="plaintext" select="false()"/>
+		<xslt:element name="{$tagname}" namespace="{$namespace}">
+			<xslt:if test="@lang">
+				<xslt:attribute name="xml:lang">
+					<xslt:value-of select="@lang"/>
+				</xslt:attribute>
+			</xslt:if>
+			<xslt:choose>
+				<xslt:when test="self::text()|self::html:title|self::html:time[not(@datetime)]">
+					<xslt:apply-templates select="." mode="text"/>
+				</xslt:when>
+				<xslt:when test="self::html:meta[@content]">
+					<xslt:value-of select="@content"/>
+				</xslt:when>
+				<xslt:when test="self::html:audio|self::html:embed|self::html:iframe|self::html:img|self::html:source|self::html:track|self::html:video">
+					<xslt:value-of select="@src"/>
+				</xslt:when>
+				<xslt:when test="self::html:a|self::html:area|self::html:link">
+					<xslt:value-of select="@href"/>
+				</xslt:when>
+				<xslt:when test="self::html:object">
+					<xslt:value-of select="@data"/>
+				</xslt:when>
+				<xslt:when test="self::html:data|self::html:meter">
+					<xslt:value-of select="@value"/>
+				</xslt:when>
+				<xslt:when test="self::html:time[@datetime]">
+					<xslt:value-of select="@datetime"/>
+				</xslt:when>
+				<xslt:otherwise>
+					<xslt:choose>
+						<xslt:when test="$plaintext">
+							<xslt:apply-templates mode="text"/>
+						</xslt:when>
+						<xslt:otherwise>
+							<xslt:if test="$namespace='&Atom;'">
+								<xslt:attribute name="type">xhtml</xslt:attribute>
+							</xslt:if>
+							<div xmlns="&xhtml;">
+								<xslt:apply-templates mode="content"/>
+							</div>
+						</xslt:otherwise>
+					</xslt:choose>
+				</xslt:otherwise>
+			</xslt:choose>
+		</xslt:element>
+	</xslt:template>
+
 	<!--
 		Set up output.
 		Note that this relies on “default” output method detection specified in X·S·L·T in order to work.