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<?xml version="1.0" encoding='ISO-8859-1' ?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<!--
* Copyright (c) 2012 Joerg Wunsch
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
*
* $Id: pdml.xsl 320 2013-01-04 20:41:04Z joerg_wunsch $
-->
<!--
* Extract all the interesting (for us) USB packet details from a
* Wireshark "packet detail" XML file (PDML). Can be used to
* analyze USB data which have been sniffed by Wireshark. Just
* export them in PDML format there, and run this stylesheet across
* them.
-->
<xsl:output method="text"/>
<xsl:template match="/">
<xsl:for-each select='//pdml/packet/proto/field'>
<xsl:if test='@name="frame.time_relative"'>
<xsl:value-of select='@show' />
<xsl:text>: </xsl:text>
</xsl:if>
<xsl:if test='@name="usb.endpoint_number"'>
<xsl:if test='@show!="0x80"'>
<!-- ignore the CONTROL endpoint data -->
<xsl:value-of select='@show' />
<xsl:for-each select='field'>
<xsl:if test='@name="usb.endpoint_number.direction"'>
<xsl:choose>
<xsl:when test='@show="1"'>
<!-- IN transfer -->
<xsl:text> <-- </xsl:text>
</xsl:when>
<xsl:otherwise>
<!-- OUT transver -->
<xsl:text> --> </xsl:text>
</xsl:otherwise>
</xsl:choose>
</xsl:if>
</xsl:for-each>
</xsl:if>
</xsl:if>
<xsl:if test='@name="usb.capdata"'>
<xsl:call-template name="format-hex">
<xsl:with-param name="arg" select="@value" />
<xsl:with-param name="count" select="0" />
</xsl:call-template>
<xsl:text> </xsl:text>
</xsl:if>
</xsl:for-each>
</xsl:template>
<!-- Format a string of hex numbers: start a new line -->
<!-- after each 8 hex numbers -->
<!-- call with parameter $count = 0, calls itself -->
<!-- recursively then until everything has been done -->
<xsl:template name="format-hex">
<xsl:param name="arg" />
<xsl:param name="count" />
<xsl:choose>
<xsl:when test="string-length($arg) <= 2">
<!-- Last element, print it, and leave template. -->
<xsl:value-of select="$arg" />
</xsl:when>
<xsl:otherwise>
<!--
* More arguments follow, print first value,
* followed by a comma, decide whether a space
* or a newline needs to be emitted, and recurse
* with the remaining part of $arg.
-->
<xsl:value-of select="substring($arg, 1, 2)" />
<xsl:choose>
<xsl:when test="$count mod 16 = 15">
<xsl:text> 
 </xsl:text>
</xsl:when>
<xsl:otherwise>
<xsl:text> </xsl:text>
</xsl:otherwise>
</xsl:choose>
<xsl:call-template name="format-hex">
<xsl:with-param name="arg" select="substring($arg, 3)" />
<xsl:with-param name="count" select="$count + 1" />
</xsl:call-template>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
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