metatools/sysdeftools/lib/path-module.xsl
author Bob Rosenberg <bob.rosenberg@nokia.com>
Wed, 28 Jul 2010 13:20:46 +0100
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Move sysdeftools from buildtools package into build package
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<?xml version="1.0"?>
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<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
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<!--Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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	All rights reserved.
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	This component and the accompanying materials are made available
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	under the terms of the License "Eclipse Public License v1.0"
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	which accompanies this distribution, and is available
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	at the URL "http://www.eclipse.org/legal/epl-v10.html".
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	Initial Contributors:
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	Nokia Corporation - initial contribution.
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	Contributors:
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	Description:
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	XSLT module which contains named templates which process file paths
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-->
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 <xsl:template name="lastbefore"><xsl:param name="string"/><xsl:param name="substr" select="'/'"/>
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        <xsl:if test="contains($string,$substr)">
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                <xsl:value-of select="substring-before($string,$substr)"/>
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                <xsl:if test="contains(substring-after($string,$substr),$substr)">
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	                <xsl:value-of select="$substr"/>
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	              </xsl:if>
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        <xsl:call-template name="lastbefore">
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                <xsl:with-param name="string" select="substring-after($string,$substr)"/>
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                <xsl:with-param name="substr" select="$substr"/>
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        </xsl:call-template>
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        </xsl:if>
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</xsl:template>
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 <xsl:template name="joinpath"><xsl:param name="file"/><xsl:param name="rel"/>
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	<xsl:choose>
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		<xsl:when test="(contains($rel,'://') and not(contains(substring-before($rel,'://'),'/'))) or starts-with($rel,'/')"> <!-- absolute URI or absolute path-->
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			<xsl:value-of select="$rel"/>
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		</xsl:when>
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		<xsl:otherwise> <!-- relative link -->
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			<xsl:call-template name="reducepath">
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				<xsl:with-param name="file">
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					<xsl:call-template name="lastbefore">
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						<xsl:with-param name="string" select="$file"/>
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					</xsl:call-template>
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					<xsl:text>/</xsl:text>
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					<xsl:value-of select="$rel"/>
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				</xsl:with-param>
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			</xsl:call-template>
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		</xsl:otherwise>
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	</xsl:choose>
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 </xsl:template>
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<xsl:template name="reducepath"><xsl:param name="file"/>
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	<xsl:call-template name="reducedotdotpath">
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    	<xsl:with-param name="file">
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			<xsl:call-template name="reducedotpath">
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		    	<xsl:with-param name="file" select="$file"/>
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		    </xsl:call-template>
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		</xsl:with-param>
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	</xsl:call-template>
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</xsl:template>
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<xsl:template name="reducedotdotpath"><xsl:param name="file"/>
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	<xsl:variable name="pre">
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		<xsl:call-template name="lastbefore">
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			    <xsl:with-param name="string" select="substring-before($file,'/../')"/>
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		</xsl:call-template>
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	</xsl:variable>
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	<xsl:choose>
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		<xsl:when test="starts-with($file,'../')">
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			<xsl:text>../</xsl:text>
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			<xsl:call-template name="reducedotdotpath">
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        		<xsl:with-param name="file" select="substring($file,4)"/>
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			</xsl:call-template>
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		</xsl:when>
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		<xsl:when test="contains($file,'/../') and $pre='' and not(starts-with($file,'/'))"> <!-- if file is a relative path and the dotdots go up to the top dir, don't start with a slash -->
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			<xsl:call-template name="reducepath">
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        		<xsl:with-param name="file" select="substring-after($file,'/../')"/>
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			</xsl:call-template>
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		</xsl:when>
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		<xsl:when test="contains($file,'/../')">
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			<xsl:call-template name="reducepath">
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        		<xsl:with-param name="file" select="concat($pre,'/',substring-after($file,'/../'))"/>
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			</xsl:call-template>
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		</xsl:when>
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		<xsl:otherwise><xsl:value-of select="$file"/></xsl:otherwise>
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	</xsl:choose>
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 </xsl:template>
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<xsl:template name="reducedotpath"><xsl:param name="file"/>
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	<xsl:choose>	
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		<xsl:when test="starts-with($file,'./')">
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			<xsl:call-template name="reducedotpath">
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        		<xsl:with-param name="file" select="substring($file,3)"/>
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			</xsl:call-template>
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		</xsl:when>
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		<xsl:when test="contains($file,'/./')">
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			<xsl:call-template name="reducepath">
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        		<xsl:with-param name="file">
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	                <xsl:value-of select="substring-before($file,'/./')"/>
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			        <xsl:text>/</xsl:text>
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					<xsl:value-of select="substring-after($file,'/./')"/>
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				</xsl:with-param>
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			</xsl:call-template>
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		</xsl:when>
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		<xsl:when test="substring($file,string-length($file) - 1) = '/.'">
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           <xsl:value-of select="substring($file,1,string-length($file) - 2)"/>
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		</xsl:when>
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		<xsl:otherwise><xsl:value-of select="$file"/></xsl:otherwise>
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	</xsl:choose>
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 </xsl:template>
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</xsl:stylesheet>