1 files changed, 77 insertions, 0 deletions
diff --git a/tools/boostbook/xsl/xref.xsl b/tools/boostbook/xsl/xref.xsl
new file mode 100644
index 0000000000..c6d85953d9
--- /dev/null
+++ b/tools/boostbook/xsl/xref.xsl
@@ -0,0 +1,77 @@
+<?xml version="1.0"?>
+<!--
+   Copyright (c) 2002 Douglas Gregor <doug.gregor -at- gmail.com>
+  
+   Distributed under the Boost Software License, Version 1.0.
+   (See accompanying file LICENSE_1_0.txt or copy at
+   http://www.boost.org/LICENSE_1_0.txt)
+  -->
+<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+                xmlns:suwl="http://nwalsh.com/xslt/ext/com.nwalsh.saxon.UnwrapLinks"
+                exclude-result-prefixes="suwl"
+                version="1.0">
+
+<!-- Import the HTML chunking stylesheet -->
+<xsl:import
+    href="http://docbook.sourceforge.net/release/xsl/current/html/xref.xsl"/>
+
+
+<xsl:template name="adjust-url">
+    <xsl:param name="target"/>
+    <xsl:param name="context" select="."/>
+
+    <xsl:choose>
+        <xsl:when test="contains($target, ':')">
+          <xsl:value-of select="$target"/>
+        </xsl:when>
+        <xsl:otherwise>
+          <xsl:call-template name="href.target.relative">
+            <xsl:with-param name="target" select="$target"/>
+          </xsl:call-template>
+        </xsl:otherwise>
+    </xsl:choose>
+
+</xsl:template>
+
+
+<xsl:template match="ulink" name="ulink">
+  <xsl:variable name="link">
+    <a>
+      <xsl:if test="@id">
+        <xsl:attribute name="name">
+          <xsl:value-of select="@id"/>
+        </xsl:attribute>
+      </xsl:if>
+      <xsl:attribute name="href">
+        <xsl:call-template name="adjust-url">
+          <xsl:with-param name="target" select="@url"/>
+        </xsl:call-template>
+      </xsl:attribute>
+      <xsl:if test="$ulink.target != ''">
+        <xsl:attribute name="target">
+          <xsl:value-of select="$ulink.target"/>
+        </xsl:attribute>
+      </xsl:if>
+      <xsl:choose>
+        <xsl:when test="count(child::node())=0">
+          <xsl:value-of select="@url"/>
+        </xsl:when>
+        <xsl:otherwise>
+          <xsl:apply-templates/>
+        </xsl:otherwise>
+      </xsl:choose>
+    </a>
+  </xsl:variable>
+
+  <xsl:choose>
+    <xsl:when test="function-available('suwl:unwrapLinks')">
+      <xsl:copy-of select="suwl:unwrapLinks($link)"/>
+    </xsl:when>
+    <xsl:otherwise>
+      <xsl:copy-of select="$link"/>
+    </xsl:otherwise>
+  </xsl:choose>
+</xsl:template>
+
+
+</xsl:stylesheet>