From 3ed0e0ae1c09564b5ff84a09cece1e37436f976e Mon Sep 17 00:00:00 2001
From: Michael Cooper <cooper@w3.org>
Date: Wed, 5 Aug 2020 17:19:55 -0400
Subject: [PATCH] Add ability to generate materials for different versions of
 guidelines

---
 .gitignore                       |  6 ++++
 build.xml                        | 55 +++++++++++++++++++-------------
 css/base.css                     | 17 ++++++++++
 script/wcag.js                   |  6 ++--
 xslt/base.xslt                   | 24 ++++++++++++++
 xslt/generate-techniques.xslt    |  1 +
 xslt/generate-understanding.xslt |  1 +
 7 files changed, 85 insertions(+), 25 deletions(-)
 create mode 100644 css/base.css

diff --git a/.gitignore b/.gitignore
index 193897b182..c23c97841c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -214,3 +214,9 @@ pip-log.txt
 
 #Mr Developer
 .mr.developer.cfg
+
+#############
+## Apache Ant
+#############
+
+build.properties
diff --git a/build.xml b/build.xml
index 92cec00538..6a77f60971 100644
--- a/build.xml
+++ b/build.xml
@@ -10,6 +10,8 @@
 	<!-- The following properties need to be set appropriately before doing a build - they should all be overridden by the above property file, but are kept here to serve as defaults -->
 	<property name="outputdir" location="." description="Directory within which the output folders are created, normally &quot;../YYYY&quot; unless doing TR in which case it is &quot;../../../TR/&lt;YYYY&gt;&quot;"/>
 	<property name="uri.prefix" value="file:///" description="Prefix if any that must be prepended to URIs to make it resolve on the platform"/>
+	<property name="guidelines.version" value="22" description="Which version of WCAG is being built"/>
+	<property name="w3ccvs.location" location="../../../w3ccvs"/>
 	
 	<property name="xslt.factory" value="net.sf.saxon.TransformerFactoryImpl" description="Class name of the XSLT transformer factory, which sets which XSLT engine to use; must be an XSLT 2.0 processor"/>
 	<property name="classpath.saxon" value="lib/saxon9he.jar" description="Path to Saxon jar in order to run XSLT 2.0"/>
@@ -96,13 +98,14 @@
 	</target>
 	
 	<target name="guidelines" depends="init">
-		<mkdir dir="output/guidelines/22"/>
-		<copy file="guidelines/guidelines.css" todir="output/guidelines/22"/>
-		<copy file="guidelines/relative-luminance.xml" todir="output/guidelines/22"/>
+		<mkdir dir="output/guidelines/${guidelines.version}"/>
+		<copy file="css/base.css" todir="output/guidelines/${guidelines.version}"/>
+		<copy file="guidelines/guidelines.css" todir="output/guidelines/${guidelines.version}"/>
+		<copy file="guidelines/relative-luminance.xml" todir="output/guidelines/${guidelines.version}"/>
 		<exec executable="curl">
 			<arg value="&quot;https://labs.w3.org/spec-generator/?type=respec&amp;url=https://raw.githack.com/w3c/wcag/master/guidelines/index.html&quot;"/>
 			<arg value="-o"/>
-			<arg value="output/guidelines/22/index.html"/>
+			<arg value="output/guidelines/${guidelines.version}/index.html"/>
 			<arg value="-f"/>
 			<arg value="--retry"/>
 			<arg value="3"/>
@@ -175,16 +178,18 @@
 		<xslt in="${inputdir.techniques}/techniques.xml" out="output.html" style="xslt/generate-techniques.xslt" force="true">
 			<classpath path="${classpath.saxon}"/>
 			<factory name="${xslt.factory}"/>
+			<param name="guidelines.version" expression="${guidelines.version}"/>
 			<param name="techniques.dir" expression="${base.techniques}"/>
 			<param name="associations.file" expression="${associations.file}"/>
 			<param name="output.dir" expression="${output.dir}"/>
-			<param name="loc.guidelines" expression="https://www.w3.org/TR/WCAG21/" if="publication"/>
-			<param name="loc.understanding" expression="https://www.w3.org/WAI/WCAG21/Understanding/" if="publication"/>
-			<param name="loc.techniques" expression="https://www.w3.org/WAI/WCAG21/Techniques/" if="publication"/>
+			<param name="loc.guidelines" expression="https://www.w3.org/TR/WCAG${guidelines.version}/" if="publication"/>
+			<param name="loc.understanding" expression="https://www.w3.org/WAI/WCAG${guidelines.version}/Understanding/" if="publication"/>
+			<param name="loc.techniques" expression="https://www.w3.org/WAI/WCAG${guidelines.version}/Techniques/" if="publication"/>
 			<param name="loc.guidelines" expression="https://w3c.github.io/wcag/guidelines/" if="editors"/>
 			<param name="loc.understanding" expression="https://w3c.github.io/wcag/understanding/" if="editors"/>
 			<param name="loc.techniques" expression="https://w3c.github.io/wcag/techniques/" if="editors"/>
 		</xslt>
+		<copy file="css/base.css" todir="output/techniques/"/>
 		<copy file="techniques/techniques.css" todir="output/techniques/"/>
 		<copy file="css/slicenav.css" todir="output/techniques/"/>
 		<copy todir="output/techniques/">
@@ -211,9 +216,10 @@
 			<classpath path="${classpath.saxon}"/>
 			<factory name="${xslt.factory}"/>
 			<param name="base.dir" expression="${base.techniques}"/>
-			<param name="loc.guidelines" expression="https://www.w3.org/TR/WCAG21/" if="publication"/>
-			<param name="loc.understanding" expression="https://www.w3.org/WAI/WCAG21/Understanding/" if="publication"/>
-			<param name="loc.techniques" expression="https://www.w3.org/WAI/WCAG21/Techniques/" if="publication"/>
+			<param name="guidelines.version" expression="${guidelines.version}"/>
+			<param name="loc.guidelines" expression="https://www.w3.org/TR/WCAG${guidelines.version}/" if="publication"/>
+			<param name="loc.understanding" expression="https://www.w3.org/WAI/WCAG${guidelines.version}/Understanding/" if="publication"/>
+			<param name="loc.techniques" expression="https://www.w3.org/WAI/WCAG${guidelines.version}/Techniques/" if="publication"/>
 			<param name="loc.guidelines" expression="https://w3c.github.io/wcag/guidelines/" if="editors"/>
 			<param name="loc.understanding" expression="https://w3c.github.io/wcag/understanding/" if="editors"/>
 			<param name="loc.techniques" expression="https://w3c.github.io/wcag/techniques/" if="editors"/>
@@ -232,13 +238,15 @@
 			<factory name="${xslt.factory}"/>
 			<param name="base.dir" expression="${base.understanding}"/>
 			<param name="output.dir" expression="${output.dir}"/>
-			<param name="loc.guidelines" expression="https://www.w3.org/TR/WCAG21/" if="publication"/>
-			<param name="loc.understanding" expression="https://www.w3.org/WAI/WCAG21/Understanding/" if="publication"/>
-			<param name="loc.techniques" expression="https://www.w3.org/WAI/WCAG21/Techniques/" if="publication"/>
+			<param name="guidelines.version" expression="${guidelines.version}"/>
+			<param name="loc.guidelines" expression="https://www.w3.org/TR/WCAG${guidelines.version}/" if="publication"/>
+			<param name="loc.understanding" expression="https://www.w3.org/WAI/WCAG${guidelines.version}/Understanding/" if="publication"/>
+			<param name="loc.techniques" expression="https://www.w3.org/WAI/WCAG${guidelines.version}/Techniques/" if="publication"/>
 			<param name="loc.guidelines" expression="https://w3c.github.io/wcag/guidelines/" if="editors"/>
 			<param name="loc.understanding" expression="https://w3c.github.io/wcag/understanding/" if="editors"/>
 			<param name="loc.techniques" expression="https://w3c.github.io/wcag/techniques/" if="editors"/>
 		</xslt>
+		<copy file="css/base.css" todir="output/understanding/"/>
 		<copy file="understanding/understanding.css" todir="output/understanding/"/>
 		<copy file="css/slicenav.css" todir="output/understanding/"/>
 		<copy todir="output/understanding/img/" flatten="true">
@@ -267,9 +275,10 @@
 			<classpath path="${classpath.saxon}"/>
 			<factory name="${xslt.factory}"/>
 			<param name="base.dir" expression="${base.understanding}"/>
-			<param name="loc.guidelines" expression="https://www.w3.org/TR/WCAG21/" if="publication"/>
-			<param name="loc.understanding" expression="https://www.w3.org/WAI/WCAG21/Understanding/" if="publication"/>
-			<param name="loc.techniques" expression="https://www.w3.org/WAI/WCAG21/Techniques/" if="publication"/>
+			<param name="guidelines.version" expression="${guidelines.version}"/>
+			<param name="loc.guidelines" expression="https://www.w3.org/TR/WCAG${guidelines.version}/" if="publication"/>
+			<param name="loc.understanding" expression="https://www.w3.org/WAI/WCAG${guidelines.version}/Understanding/" if="publication"/>
+			<param name="loc.techniques" expression="https://www.w3.org/WAI/WCAG${guidelines.version}/Techniques/" if="publication"/>
 			<param name="loc.guidelines" expression="https://w3c.github.io/wcag/guidelines/" if="editors"/>
 			<param name="loc.understanding" expression="https://w3c.github.io/wcag/understanding/" if="editors"/>
 			<param name="loc.techniques" expression="https://w3c.github.io/wcag/techniques/" if="editors"/>
@@ -278,11 +287,11 @@
 	
 	<!-- Requirements -->
 	<target name="requirements" depends="init">
-		<mkdir dir="output/requirements/22"/>
+		<mkdir dir="output/requirements/${guidelines.version}"/>
 		<exec executable="curl">
-			<arg value="&quot;https://labs.w3.org/spec-generator/?type=respec&amp;url=https://raw.githack.com/w3c/wcag/master/requirements/22/index.html&quot;"/>
+			<arg value="&quot;https://labs.w3.org/spec-generator/?type=respec&amp;url=https://raw.githack.com/w3c/wcag/master/requirements/${guidelines.version}/index.html&quot;"/>
 			<arg value="-o"/>
-			<arg value="output/requirements/22/index.html"/>
+			<arg value="output/requirements/${guidelines.version}/index.html"/>
 			<arg value="-f"/>
 			<arg value="--retry"/>
 			<arg value="3"/>
@@ -319,18 +328,18 @@
 		<property name="publication" value="true"/>
 		<antcall target="techniques"/>
 		<antcall target="understanding"/>
-		<copy todir="../../../smartcvs/WWW/WAI/WCAG21/">
+		<copy todir="${w3ccvs.location}/WWW/WAI/WCAG${guidelines.version}/">
 			<fileset dir="output/"/>
 			<globmapper from="*index.html" to="*Overview.html"/>
 		</copy>
-		<copy todir="../../../smartcvs/WWW/WAI/WCAG21/">
+		<copy todir="${w3ccvs.location}/WWW/WAI/WCAG${guidelines.version}/">
 			<fileset dir="output" excludes="index.html **/index.html"/>
 		</copy>
-		<copy todir="../../../smartcvs/WWW/WAI/WCAG21/working-examples/">
+		<copy todir="${w3ccvs.location}/WWW/WAI/WCAG${guidelines.version}/working-examples/">
 			<fileset dir="working-examples/"/>
 			<globmapper from="*index.html" to="*Overview.html"/>
 		</copy>
-		<copy todir="../../../smartcvs/WWW/WAI/WCAG21/working-examples/">
+		<copy todir="${w3ccvs.location}/WWW/WAI/WCAG${guidelines.version}/working-examples/">
 			<fileset dir="working-examples/" excludes="index.html **/index.html"/>
 		</copy>
 	</target>
diff --git a/css/base.css b/css/base.css
new file mode 100644
index 0000000000..b028c7b059
--- /dev/null
+++ b/css/base.css
@@ -0,0 +1,17 @@
+.wcag21, .wcag22 {
+	background-color: #E9FBE9;
+	border-left: solid .5em #52E052;
+}
+span.wcag21, span.wcag22 {
+	margin-left: .25em;
+	padding-left: .25em;
+}
+div.wcag21, div.wcag22 {
+	margin: 1em auto;
+	padding: .5em;
+	page-break-inside: avoid;
+}
+.new-version {
+	font-size: smaller;
+	font-weight: bold;
+}
\ No newline at end of file
diff --git a/script/wcag.js b/script/wcag.js
index ba8262cde6..92c4fb7ee5 100644
--- a/script/wcag.js
+++ b/script/wcag.js
@@ -1,3 +1,5 @@
+var version="22";
+
 function titleToPathFrag (title) {
 	return title.toLowerCase().replace(/[\s,]+/g, "-").replace(/[\(\)]/g, "");
 }
@@ -5,13 +7,13 @@ function titleToPathFrag (title) {
 function linkUnderstanding() {
 	var understandingBaseURI;
 	if (respecConfig.specStatus == "ED") understandingBaseURI = "../../understanding/";
-	else understandingBaseURI = "https://www.w3.org/WAI/WCAG21/Understanding/";
+	else understandingBaseURI = "https://www.w3.org/WAI/WCAG" + version + "/Understanding/";
 	document.querySelectorAll('.sc').forEach(function(node){
 		var heading = node.firstElementChild.textContent;
 		var pathFrag = titleToPathFrag(heading);
 		var el = document.createElement("div");
 		el.setAttribute("class", "doclinks");
-		el.innerHTML = "<a href=\"" + understandingBaseURI + pathFrag + ".html\">Understanding " + heading + "</a> <span class=\"screenreader\">|</span> <br /><a href=\"https://www.w3.org/WAI/WCAG21/quickref/#" + pathFrag + "\">How to Meet " + heading + "</a>";
+		el.innerHTML = "<a href=\"" + understandingBaseURI + pathFrag + ".html\">Understanding " + heading + "</a> <span class=\"screenreader\">|</span> <br /><a href=\"https://www.w3.org/WAI/WCAG" + version + "/quickref/#" + pathFrag + "\">How to Meet " + heading + "</a>";
 		node.insertBefore(el, node.children[1]);
 	})
 }
diff --git a/xslt/base.xslt b/xslt/base.xslt
index cb5d5fa534..4c48b02acd 100644
--- a/xslt/base.xslt
+++ b/xslt/base.xslt
@@ -7,6 +7,8 @@
 	exclude-result-prefixes="#all"
 	version="2.0">
 	
+	<xsl:param name="guidelines.version"/>
+	
 	<xsl:param name="loc.guidelines">/guidelines/</xsl:param>
 	<xsl:param name="loc.understanding">/understanding/</xsl:param>
 	<xsl:param name="loc.techniques">/techniques/</xsl:param>
@@ -164,4 +166,26 @@
 		</xsl:choose>
 	</xsl:template>
 	
+	<xsl:template match="html:*[starts-with(@class, 'wcag')]">
+		<xsl:if test="not($guidelines.version)">
+			<xsl:message terminate="yes">Guidelines version not provided</xsl:message>
+		</xsl:if>
+		<xsl:variable name="version" select="substring-after(@class, 'wcag')"/>
+		<xsl:choose>
+			<xsl:when test="$version &lt; $guidelines.version">
+				<xsl:copy>
+					<xsl:apply-templates select="node()|@*"/>
+				</xsl:copy>
+			</xsl:when>
+			<xsl:when test="$version = $guidelines.version">
+				<xsl:copy>
+					<xsl:apply-templates select="@*"/>
+					<xsl:text> </xsl:text><span class="new-version">New in WCAG <xsl:value-of select="$guidelines.version"/>: </span>
+					<xsl:apply-templates/>
+				</xsl:copy>
+			</xsl:when>
+			<xsl:when test="$version &gt; $guidelines.version"><!-- don't output --></xsl:when>
+		</xsl:choose>
+	</xsl:template>
+	
 </xsl:stylesheet>
\ No newline at end of file
diff --git a/xslt/generate-techniques.xslt b/xslt/generate-techniques.xslt
index 739efbab13..4693a2257c 100644
--- a/xslt/generate-techniques.xslt
+++ b/xslt/generate-techniques.xslt
@@ -161,6 +161,7 @@
 				<meta charset="UTF-8" />
 				<xsl:apply-templates select="//html:title"/>
 				<link rel="stylesheet" type="text/css" href="https://www.w3.org/StyleSheets/TR/2016/base" />
+				<link rel="stylesheet" type="text/css" href="base.css" />
 				<link rel="stylesheet" type="text/css" href="../techniques.css" />
 				<link rel="stylesheet" type="text/css" href="../slicenav.css" />
 			</head>
diff --git a/xslt/generate-understanding.xslt b/xslt/generate-understanding.xslt
index a9024faa5e..b5869802c4 100644
--- a/xslt/generate-understanding.xslt
+++ b/xslt/generate-understanding.xslt
@@ -237,6 +237,7 @@
 				<meta charset="UTF-8" />
 				<title><xsl:apply-templates select="//html:h1"/></title>
 				<link rel="stylesheet" type="text/css" href="https://www.w3.org/StyleSheets/TR/2016/base" />
+				<link rel="stylesheet" type="text/css" href="base.css" />
 				<link rel="stylesheet" type="text/css" href="understanding.css" />
 				<link rel="stylesheet" type="text/css" href="slicenav.css" />
 			</head>