eclass/vmware-bundle.eclass

   1 # Copyright 1999-2011 Gentoo Foundation
   2 # Distributed under the terms of the GNU General Public License v2
   3 # $Id$
   4
   5 # @ECLASS: vmware-bundle.eclass
   6 # @MAINTAINER:
   7 # vmware@gentoo.org
   8 # @AUTHOR:
   9 # Matt Whitlock <matt@whitlock.name>
  10 # @BLURB: Provides extract functionality for vmware products bundles
  11
  12 DEPEND="dev-libs/libxslt"
  13
  14 vmware-bundle_extract-bundle-component() {
  15         local bundle=${1:?} component=${2:?} dest=${3:-${2}}
  16         cat > "${T}"/list-bundle-components.xsl <<-EOF
  17                 <?xml version="1.0" encoding="ISO-8859-1"?>
  18                 <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  19                         <xsl:output omit-xml-declaration="yes"/>
  20                         <xsl:template match="text()"/>
  21                         <xsl:template match="/bundle/components/component">
  22                                 <xsl:value-of select="@offset"/>
  23                                 <xsl:text> </xsl:text>
  24                                 <xsl:value-of select="@size"/>
  25                                 <xsl:text> </xsl:text>
  26                                 <xsl:value-of select="@name"/>
  27                                 <xsl:text>&#10;</xsl:text>
  28                         </xsl:template>
  29                 </xsl:stylesheet>
  30                 EOF
  31         local -i bundle_size=$(stat -L -c'%s' "${bundle}")
  32         local -i bundle_manifestOffset=$(od -An -j$((bundle_size-36)) -N4 -tu4 "${bundle}")
  33         local -i bundle_manifestSize=$(od -An -j$((bundle_size-40)) -N4 -tu4 "${bundle}")
  34         local -i bundle_dataOffset=$(od -An -j$((bundle_size-44)) -N4 -tu4 "${bundle}")
  35         local -i bundle_dataSize=$(od -An -j$((bundle_size-52)) -N8 -tu8 "${bundle}")
  36         tail -c+$((bundle_manifestOffset+1)) "${bundle}" 2> /dev/null | head -c$((bundle_manifestSize)) |
  37                 xsltproc "${T}"/list-bundle-components.xsl - |
  38                 while read -r component_offset component_size component_name ; do
  39                         if [[ ${component_name} == ${component} ]] ; then
  40                                 ebegin "Extracting '${component_name}' component from '$(basename "${bundle}")'"
  41                                 vmware-bundle_extract-component "${bundle}" "${dest}" $((bundle_dataOffset+component_offset))
  42                                 eend
  43                         fi
  44                 done
  45 }
  46
  47 vmware-bundle_extract-component() {
  48         local component=${1:?} dest=${2:-.}
  49         local -i offset=${3}
  50         cat > "${T}"/list-component-files.xsl <<-EOF
  51                 <?xml version="1.0" encoding="ISO-8859-1"?>
  52                 <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  53                         <xsl:output omit-xml-declaration="yes"/>
  54                         <xsl:template match="text()"/>
  55                         <xsl:template match="/component/fileset/file">
  56                                 <xsl:value-of select="@offset"/>
  57                                 <xsl:text> </xsl:text>
  58                                 <xsl:value-of select="@compressedSize"/>
  59                                 <xsl:text> </xsl:text>
  60                                 <xsl:value-of select="@uncompressedSize"/>
  61                                 <xsl:text> </xsl:text>
  62                                 <xsl:value-of select="@path"/>
  63                                 <xsl:text>&#10;</xsl:text>
  64                         </xsl:template>
  65                 </xsl:stylesheet>
  66                 EOF
  67         local -i component_manifestOffset=$(od -An -j$((offset+9)) -N4 -tu4 "${component}")
  68         local -i component_manifestSize=$(od -An -j$((offset+13)) -N4 -tu4 "${component}")
  69         local -i component_dataOffset=$(od -An -j$((offset+17)) -N4 -tu4 "${component}")
  70         local -i component_dataSize=$(od -An -j$((offset+21)) -N8 -tu8 "${component}")
  71         tail -c+$((offset+component_manifestOffset+1)) "${component}" 2> /dev/null |
  72                 head -c$((component_manifestSize)) | xsltproc "${T}"/list-component-files.xsl - |
  73                 while read -r file_offset file_compressedSize file_uncompressedSize file_path ; do
  74                         if [[ ${file_path} ]] ; then
  75                                 echo -n '.'
  76                                 file_path="${dest}/${file_path}"
  77                                 mkdir -p "$(dirname "${file_path}")" || die
  78                                 tail -c+$((offset+component_dataOffset+file_offset+1)) "${component}" 2> /dev/null |
  79                                         head -c$((file_compressedSize)) | gzip -cd > "${file_path}" || die
  80                         fi
  81                 done
  82         echo
  83 }