OTP-8308 Added an xsl transform from OTP xml documentation to a file

          (.eix) of erlang terms that can be read by the erldoc
          application. Erldoc handles the documentation search mechanism at
          erlang.org. Added generation of eix files to
          otp_release_targets.mk. Fixed a copyright date error in
          db_html.xsl .

2 files changed, 207 insertions, 1 deletions

diff --git a/lib/erl_docgen/priv/xsl/db_eix.xsl b/lib/erl_docgen/priv/xsl/db_eix.xsl
new file mode 100644
index 0000000000..929272256a
--- /dev/null
+++ b/lib/erl_docgen/priv/xsl/db_eix.xsl
@@ -0,0 +1,206 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--      
+     #
+     # %CopyrightBegin%
+     # 
+     # Copyright Ericsson AB 2009. All Rights Reserved.
+     # 
+     # The contents of this file are subject to the Erlang Public License,
+     # Version 1.1, (the "License"); you may not use this file except in
+     # compliance with the License. You should have received a copy of the
+     # Erlang Public License along with this software. If not, it can be
+     # retrieved online at http://www.erlang.org/.
+     # 
+     # Software distributed under the License is distributed on an "AS IS"
+     # basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+     # the License for the specific language governing rights and limitations
+     # under the License.
+     # 
+     # %CopyrightEnd%
+     
+     -->
+
+<xsl:stylesheet version="1.0"
+  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+  xmlns:fn="http://www.w3.org/2005/02/xpath-functions"> 
+
+  <xsl:output method="text" encoding="UTF-8" indent="no"/>
+
+  <!-- Book -->
+  <xsl:template match="/book">
+    <xsl:text>%% &#10;%% Search data file for </xsl:text><xsl:value-of select="$appname"/><xsl:text> </xsl:text><xsl:value-of select="$appver"/>
+    <xsl:text>&#10;%% generated </xsl:text><xsl:value-of select="$gendate"/><xsl:text>&#10;%% &#10;</xsl:text>
+    <xsl:apply-templates select="applications"/>
+    <xsl:text>{notused, application, ["</xsl:text><xsl:value-of select="$appname"/><xsl:text>"]}.&#10;</xsl:text>
+  </xsl:template>
+
+  <!-- Applications -->
+  <xsl:template match="applications">
+    <xsl:apply-templates name="application"/>
+  </xsl:template>
+
+  <!-- Reference Manual -->
+
+  <!-- Application -->
+  <xsl:template match="application">
+    <xsl:apply-templates select="erlref|cref|comref|fileref|appref"/>          
+  </xsl:template>
+
+  <!-- Erlref -->
+  <xsl:template match="erlref">
+    <xsl:text>{"</xsl:text><xsl:value-of select="module"/><xsl:text>.html", {function, {"</xsl:text><xsl:value-of select="$appname"/>
+    <xsl:text>", "</xsl:text><xsl:value-of select="module"/><xsl:text>"}},&#10;[&#10;</xsl:text>
+    <xsl:apply-templates select="funcs">  
+      <xsl:with-param name="mod" select="module"/>
+    </xsl:apply-templates>  
+    <xsl:text>]}.&#10;</xsl:text>
+    <xsl:text>{"</xsl:text><xsl:value-of select="module"/><xsl:text>.html", {module, "</xsl:text>
+    <xsl:value-of select="$appname"/><xsl:text>"}, ["</xsl:text><xsl:value-of select="module"/><xsl:text>"]}.&#10;</xsl:text>
+  </xsl:template>
+
+  <!-- Cref -->
+  <xsl:template match="cref">
+    <xsl:text>{"</xsl:text><xsl:value-of select="lib"/><xsl:text>.html", {function, {"</xsl:text><xsl:value-of select="$appname"/>
+    <xsl:text>", "</xsl:text><xsl:value-of select="lib"/><xsl:text>"}}, [&#10;</xsl:text>
+    <xsl:apply-templates select="funcs">  
+      <xsl:with-param name="mod" select="lib"/>
+    </xsl:apply-templates>  
+    <xsl:text>]}.&#10;</xsl:text>
+    <xsl:text>{"</xsl:text><xsl:value-of select="lib"/><xsl:text>.html", {clib, "</xsl:text>
+    <xsl:value-of select="$appname"/><xsl:text>"}, ["</xsl:text><xsl:value-of select="lib"/><xsl:text>"]}.&#10;</xsl:text>
+  </xsl:template>
+
+  <!-- Comref -->
+  <xsl:template match="comref">
+    <xsl:text>{"</xsl:text><xsl:value-of select="com"/><xsl:text>.html", {command, "</xsl:text>
+    <xsl:value-of select="$appname"/><xsl:text>"}, ["</xsl:text><xsl:value-of select="com"/><xsl:text>"]}.&#10;</xsl:text>
+  </xsl:template>
+
+  <!-- Fileref -->
+  <xsl:template match="fileref">
+    <xsl:text>{"</xsl:text><xsl:value-of select="file"/><xsl:text>.html", {file, "</xsl:text>
+    <xsl:value-of select="$appname"/><xsl:text>"}, ["</xsl:text><xsl:value-of select="file"/><xsl:text>"]}.&#10;</xsl:text>
+  </xsl:template>
+
+  <!-- Appref -->
+  <xsl:template match="appref">
+    <xsl:text>{"</xsl:text><xsl:value-of select="app"/><xsl:text>_app.html", {app, "</xsl:text>
+    <xsl:value-of select="$appname"/><xsl:text>"}, ["</xsl:text><xsl:value-of select="app"/><xsl:text>"]}.&#10;</xsl:text>
+  </xsl:template>
+
+
+  <!-- Funcs -->
+  <xsl:template match="funcs">
+    <xsl:param name="mod"/>
+    <xsl:variable name="lastfuncsblock">
+      <xsl:value-of select="position() = last()"/>
+    </xsl:variable>         
+    <xsl:apply-templates select="func/name">
+      <xsl:with-param name="mod" select="$mod"/>
+      <xsl:with-param name="lastfuncsblock" select="$lastfuncsblock"/>
+    </xsl:apply-templates>
+  </xsl:template>
+
+
+
+
+  <xsl:template match="name">
+    <xsl:param name="mod"/>
+    <xsl:param name="lastfuncsblock"/>
+
+    <xsl:variable name="tmpstring">
+      <xsl:value-of select="substring-before(substring-after(., '('), '->')"/>
+    </xsl:variable>     
+    <xsl:variable name="ustring">
+      <xsl:choose>
+        <xsl:when test="string-length($tmpstring) > 0">
+          <xsl:call-template name="remove-paren">
+            <xsl:with-param name="string" select="$tmpstring"/>
+          </xsl:call-template>            
+        </xsl:when>
+        <xsl:otherwise>
+          <xsl:call-template name="remove-paren">
+            <xsl:with-param name="string" select="substring-after(., '(')"/>
+          </xsl:call-template>                      
+        </xsl:otherwise>
+      </xsl:choose>
+    </xsl:variable>       
+    <xsl:variable name="arity">
+      <xsl:call-template name="calc-arity">
+        <xsl:with-param name="string" select="substring-before($ustring, ')')"/>
+        <xsl:with-param name="no-of-pars" select="0"/> 
+      </xsl:call-template>
+    </xsl:variable> 
+    <xsl:variable name="fname">
+      <xsl:choose>
+        <xsl:when test="ancestor::cref">
+          <xsl:value-of select="substring-before(nametext, '(')"/>
+        </xsl:when>
+        <xsl:when test="ancestor::erlref">
+          <xsl:value-of select="substring-before(., '(')"/>
+        </xsl:when>
+      </xsl:choose>
+    </xsl:variable>     
+    <xsl:text>  {"</xsl:text><xsl:value-of select="$fname"/>
+    <xsl:text>", "</xsl:text><xsl:value-of select="$fname"/>
+    <xsl:text>(</xsl:text><xsl:value-of select="normalize-space($tmpstring)"/>
+    <xsl:text>", "</xsl:text><xsl:value-of select="$fname"/>
+    <xsl:text>-</xsl:text><xsl:value-of select="$arity"/><xsl:text>"}</xsl:text>
+    
+    <xsl:choose>
+      <xsl:when test="($lastfuncsblock = 'true') and (position() = last())">
+        <xsl:text>&#10;</xsl:text>
+      </xsl:when>
+      <xsl:otherwise>
+        <xsl:text>,&#10;</xsl:text>
+      </xsl:otherwise>
+    </xsl:choose>
+  </xsl:template>
+
+ <!-- Special templates to calculate the arity of functions -->
+  <xsl:template name="calc-arity">
+    <xsl:param name="string"/>
+    <xsl:param name="no-of-pars"/>
+    <xsl:variable name="length">
+      <xsl:value-of select="string-length($string)"/>
+    </xsl:variable>
+    <xsl:choose>
+      <xsl:when test="$length > 0">
+        <xsl:call-template name="calc-arity">
+          <xsl:with-param name="string" select="substring-after($string, ',')"/>
+          <xsl:with-param name="no-of-pars" select="$no-of-pars+1"/> 
+        </xsl:call-template>        
+      </xsl:when>
+      <xsl:otherwise>
+        <xsl:value-of select="$no-of-pars"/>
+      </xsl:otherwise>
+    </xsl:choose>
+  </xsl:template>
+
+  <xsl:template name="remove-paren">
+    <xsl:param name="string"/>  
+    <xsl:variable name="bstring">
+      <xsl:value-of select="substring-before($string, '(')"/>
+    </xsl:variable>
+    <xsl:choose>
+      <xsl:when test="string-length($bstring) > 0">
+        <xsl:variable name="astring">
+          <xsl:value-of select="substring-after($string, ')')"/>
+        </xsl:variable>
+        <xsl:variable name="retstring">
+          <xsl:call-template name="remove-paren">
+            <xsl:with-param name="string" select="$astring"/>
+          </xsl:call-template>        
+        </xsl:variable>
+        <xsl:value-of select="concat($bstring, $retstring)"/>
+      </xsl:when>
+      <xsl:otherwise>
+        <xsl:value-of select="$string"/>
+      </xsl:otherwise>
+    </xsl:choose>
+  </xsl:template>
+
+  <!-- default content handling -->
+  <xsl:template match="text()"/>
+
+</xsl:stylesheet>
diff --git a/lib/erl_docgen/priv/xsl/db_html.xsl b/lib/erl_docgen/priv/xsl/db_html.xsl
index 3e6f762870..984655fc26 100644
--- a/lib/erl_docgen/priv/xsl/db_html.xsl
+++ b/lib/erl_docgen/priv/xsl/db_html.xsl
@@ -61,7 +61,7 @@
                 <xsl:value-of select="$copyright"/>
                 <xsl:value-of select="/book/header/copyright/year[1]"/>
                 <xsl:text>-</xsl:text>
-                <xsl:value-of select="substring-after(substring-after($gendate, ' '), ' ')"/>
+                <xsl:value-of select="substring-after(normalize-space(substring-after($gendate, ' ')), ' ')"/>
                 <xsl:text> </xsl:text>
                 <xsl:value-of select="/book/header/copyright/holder"/>
               </p>