Generates olink target data file.

Part of the new stylesheet olink system.

diff --git a/xsl/common/targets.xsl b/xsl/common/targets.xsl
new file mode 100644 (file)
index 0000000..4d4a7fe
--- /dev/null
+++ b/xsl/common/targets.xsl
@@ -0,0 +1,237 @@
+<?xml version='1.0'?>
+<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+                xmlns:doc="http://nwalsh.com/xsl/documentation/1.0"
+                exclude-result-prefixes="doc"
+                version='1.0'>
+
+<!-- ============================================================ -->
+<!-- cross reference target collection  -->
+
+<doc:mode mode="collect.targets" xmlns="">
+<refpurpose>Collects information for potential cross reference targets</refpurpose>
+<refdescription>
+<para>Processing the root element in the
+<literal role="mode">collect.targets</literal> mode produces 
+a set of target database elements that can be used by
+the olink mechanism to resolve external cross references.
+The collection process is controlled by the <literal>
+collect.xref.targets</literal> parameter, which can be
+<literal>yes</literal> to collect targets and process
+the document for output, <literal>only</literal> to
+only collect the targets, and <literal>no</literal>
+(default) to not collect the targets and only process the document.
+</para>
+<para>
+A <literal>targets.filename</literal> parameter must be
+specified to receive the output if 
+<literal>collect.xref.targets</literal> is
+set to <literal>yes</literal> so as to
+redirect the target data to a file separate from the
+document output.
+</para>
+</refdescription>
+</doc:mode>
+
+<!-- ============================================================ -->
+
+<xsl:template match="*" mode="collect.targets">
+  <xsl:choose>
+    <xsl:when test="$collect.xref.targets = 'yes' and $targets.filename = ''">
+      <xsl:message>
+        Must specify a $targets.filename parameter when
+        $collect.xref.targets is set to 'yes'.
+        The xref targets were not collected.
+      </xsl:message>
+    </xsl:when> 
+    <xsl:otherwise>
+      <xsl:choose>
+        <xsl:when test="$targets.filename">
+          <xsl:call-template name="write.chunk">
+            <xsl:with-param name="filename" select="$targets.filename"/>
+            <xsl:with-param name="method" select="'xml'"/>
+            <xsl:with-param name="encoding" select="$default.encoding"/>
+            <xsl:with-param name="indent" select="'yes'"/>
+            <xsl:with-param name="quiet" select="0"/>
+            <xsl:with-param name="content">
+              <xsl:apply-templates select="." mode="olink.mode"/>
+            </xsl:with-param>
+          </xsl:call-template>
+        </xsl:when>
+        <xsl:otherwise>
+          <!-- Else write to standard output -->
+          <xsl:apply-templates select="." mode="olink.mode"/>
+        </xsl:otherwise>
+      </xsl:choose>
+    </xsl:otherwise>
+  </xsl:choose>
+</xsl:template>
+
+<xsl:template name="olink.href.target">
+  <xsl:param name="nd" select="."/>
+
+  <xsl:value-of select="$olink.base.uri"/>
+  <xsl:call-template name="href.target">
+    <xsl:with-param name="obj" select="$nd"/>
+  </xsl:call-template>
+</xsl:template>
+
+<!-- Templates for extracting cross reference information
+     from a document for use in an xref database.
+-->
+
+<xsl:template name="attrs">
+  <xsl:param name="nd" select="."/>
+
+  <xsl:attribute name="element">
+    <xsl:value-of select="local-name(.)"/>
+  </xsl:attribute>
+
+  <xsl:attribute name="href">
+    <xsl:call-template name="olink.href.target">
+      <xsl:with-param name="object" select="$nd"/>
+    </xsl:call-template>
+  </xsl:attribute>
+
+  <xsl:variable name="num">
+    <xsl:apply-templates select="$nd" mode="label.markup">
+      <xsl:with-param name="verbose" select="0"/>
+    </xsl:apply-templates>
+  </xsl:variable>
+
+  <xsl:if test="$num">
+    <xsl:attribute name="number">
+      <xsl:value-of select="$num"/>
+    </xsl:attribute>
+  </xsl:if>
+
+  <xsl:if test="$nd/@id">
+    <xsl:attribute name="targetptr">
+      <xsl:value-of select="$nd/@id"/>
+    </xsl:attribute>
+  </xsl:if>
+
+  <xsl:if test="$nd/@lang">
+    <xsl:attribute name="lang">
+      <xsl:value-of select="$nd/@lang"/>
+    </xsl:attribute>
+  </xsl:if>
+
+</xsl:template>
+
+<xsl:template name="div">
+  <xsl:param name="nd" select="."/>
+
+  <div>
+    <xsl:call-template name="attrs">
+      <xsl:with-param name="nd" select="$nd"/>
+    </xsl:call-template>
+    <ttl>
+      <xsl:apply-templates select="$nd" mode="title.markup"/>
+    </ttl>
+    <xreftext>
+      <xsl:choose>
+        <xsl:when test="$nd/@xreflabel">
+          <xsl:call-template name="xref.xreflabel">
+            <xsl:with-param name="target" select="$nd"/>
+          </xsl:call-template>
+        </xsl:when>
+        <xsl:otherwise>
+          <xsl:apply-templates select="$nd" mode="xref-to"/>
+        </xsl:otherwise>
+      </xsl:choose>
+    </xreftext>
+    <xsl:apply-templates mode="olink.mode"/>
+  </div>
+</xsl:template>
+
+<xsl:template name="obj">
+  <xsl:param name="nd" select="."/>
+
+  <obj>
+    <xsl:call-template name="attrs">
+      <xsl:with-param name="nd" select="$nd"/>
+    </xsl:call-template>
+    <ttl>
+      <xsl:apply-templates select="$nd" mode="title.markup">
+        <xsl:with-param name="verbose" select="0"/>
+      </xsl:apply-templates>
+    </ttl>
+    <xreftext>
+      <xsl:choose>
+        <xsl:when test="$nd/@xreflabel">
+          <xsl:call-template name="xref.xreflabel">
+            <xsl:with-param name="target" select="$nd"/>
+          </xsl:call-template>
+        </xsl:when>
+        <xsl:otherwise>
+          <xsl:apply-templates select="$nd" mode="xref-to">
+            <xsl:with-param name="verbose" select="0"/>
+          </xsl:apply-templates>
+        </xsl:otherwise>
+      </xsl:choose>
+    </xreftext>
+  </obj>
+</xsl:template>
+
+<xsl:template match="text()|processing-instruction()|comment()"
+              mode="olink.mode">
+  <!-- nop -->
+</xsl:template>
+
+<!--
+<xsl:template match="*" mode="olink.mode">
+</xsl:template>
+-->
+
+<xsl:template match="set" mode="olink.mode">
+  <xsl:call-template name="div"/>
+</xsl:template>
+
+<xsl:template match="book" mode="olink.mode">
+  <xsl:call-template name="div"/>
+</xsl:template>
+
+<xsl:template match="preface|chapter|appendix" mode="olink.mode">
+  <xsl:call-template name="div"/>
+</xsl:template>
+
+<xsl:template match="part|reference" mode="olink.mode">
+  <xsl:call-template name="div"/>
+</xsl:template>
+
+<xsl:template match="article" mode="olink.mode">
+  <xsl:call-template name="div"/>
+</xsl:template>
+
+<xsl:template match="refentry" mode="olink.mode">
+  <xsl:call-template name="div"/>
+</xsl:template>
+
+<xsl:template match="section|sect1|sect2|sect3|sect4|sect5" mode="olink.mode">
+  <xsl:call-template name="div"/>
+</xsl:template>
+
+<xsl:template match="refsection|refsect1|refsect2|refsect3" mode="olink.mode">
+  <xsl:call-template name="div"/>
+</xsl:template>
+
+<xsl:template match="figure|example|table" mode="olink.mode">
+  <xsl:call-template name="obj"/>
+</xsl:template>
+
+<xsl:template match="equation[title]" mode="olink.mode">
+  <xsl:call-template name="obj"/>
+</xsl:template>
+
+<xsl:template match="qandaset|qandaentry" mode="olink.mode">
+  <xsl:call-template name="div"/>
+</xsl:template>
+
+<xsl:template match="*" mode="olink.mode">
+  <xsl:if test="@id">
+    <xsl:call-template name="obj"/>
+  </xsl:if> 
+  <xsl:apply-templates mode="olink.mode"/>
+</xsl:template>
+
+</xsl:stylesheet>