/[gentoo-x86]/eclass/unpacker.eclass
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1# Copyright 1999-2012 Gentoo Foundation 1# Copyright 1999-2012 Gentoo Foundation
2# Distributed under the terms of the GNU General Public License v2 2# Distributed under the terms of the GNU General Public License v2
3# $Header: /var/cvsroot/gentoo-x86/eclass/unpacker.eclass,v 1.1 2012/02/05 04:48:42 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/unpacker.eclass,v 1.4 2012/02/05 06:30:10 vapier Exp $
4 4
5# @ECLASS: unpacker.eclass 5# @ECLASS: unpacker.eclass
6# @MAINTAINER: 6# @MAINTAINER:
7# base-system@gentoo.org 7# base-system@gentoo.org
8# @BLURB: helpers for extraneous file formats and consistent behavior across EAPIs 8# @BLURB: helpers for extraneous file formats and consistent behavior across EAPIs
92 92
93 local metaskip=$(tail -c ${sizeoff_t} "${src}" | hexdump -e \"%i\") 93 local metaskip=$(tail -c ${sizeoff_t} "${src}" | hexdump -e \"%i\")
94 local tailskip=$(tail -c $((${sizeoff_t}*2)) "${src}" | head -c ${sizeoff_t} | hexdump -e \"%i\") 94 local tailskip=$(tail -c $((${sizeoff_t}*2)) "${src}" | head -c ${sizeoff_t} | hexdump -e \"%i\")
95 95
96 # grab metadata for debug reasons 96 # grab metadata for debug reasons
97 local metafile=$(emktemp) 97 local metafile="${T}/${FUNCNAME}.meta"
98 tail -c +$((${metaskip}+1)) "${src}" > "${metafile}" 98 tail -c +$((${metaskip}+1)) "${src}" > "${metafile}"
99 99
100 # rip out the final file name from the metadata 100 # rip out the final file name from the metadata
101 local datafile=$(tail -c +$((${metaskip}+1)) "${src}" | strings | head -n 1) 101 local datafile=$(tail -c +$((${metaskip}+1)) "${src}" | strings | head -n 1)
102 datafile=$(basename "${datafile}") 102 datafile=$(basename "${datafile}")
103 103
104 # now lets uncompress/untar the file if need be 104 # now lets uncompress/untar the file if need be
105 local tmpfile=$(emktemp) 105 local tmpfile="${T}/${FUNCNAME}"
106 tail -c +$((${tailskip}+1)) ${src} 2>/dev/null | head -c 512 > ${tmpfile} 106 tail -c +$((${tailskip}+1)) ${src} 2>/dev/null | head -c 512 > "${tmpfile}"
107 107
108 local iscompressed=$(file -b "${tmpfile}") 108 local iscompressed=$(file -b "${tmpfile}")
109 if [[ ${iscompressed:0:8} == "compress" ]] ; then 109 if [[ ${iscompressed:0:8} == "compress" ]] ; then
110 iscompressed=1 110 iscompressed=1
111 mv ${tmpfile}{,.Z} 111 mv "${tmpfile}"{,.Z}
112 gunzip ${tmpfile} 112 gunzip "${tmpfile}"
113 else 113 else
114 iscompressed=0 114 iscompressed=0
115 fi 115 fi
116 local istar=$(file -b "${tmpfile}") 116 local istar=$(file -b "${tmpfile}")
117 if [[ ${istar:0:9} == "POSIX tar" ]] ; then 117 if [[ ${istar:0:9} == "POSIX tar" ]] ; then
125 # | dd ibs=${tailskip} skip=1 \ 125 # | dd ibs=${tailskip} skip=1 \
126 # | gzip -dc \ 126 # | gzip -dc \
127 # > ${datafile} 127 # > ${datafile}
128 if [ ${iscompressed} -eq 1 ] ; then 128 if [ ${iscompressed} -eq 1 ] ; then
129 if [ ${istar} -eq 1 ] ; then 129 if [ ${istar} -eq 1 ] ; then
130 tail -c +$((${tailskip}+1)) ${src} 2>/dev/null \ 130 tail -c +$((${tailskip}+1)) "${src}" 2>/dev/null \
131 | head -c $((${metaskip}-${tailskip})) \ 131 | head -c $((${metaskip}-${tailskip})) \
132 | tar -xzf - 132 | tar -xzf -
133 else 133 else
134 tail -c +$((${tailskip}+1)) ${src} 2>/dev/null \ 134 tail -c +$((${tailskip}+1)) "${src}" 2>/dev/null \
135 | head -c $((${metaskip}-${tailskip})) \ 135 | head -c $((${metaskip}-${tailskip})) \
136 | gzip -dc \ 136 | gzip -dc \
137 > ${datafile} 137 > ${datafile}
138 fi 138 fi
139 else 139 else
140 if [ ${istar} -eq 1 ] ; then 140 if [ ${istar} -eq 1 ] ; then
141 tail -c +$((${tailskip}+1)) ${src} 2>/dev/null \ 141 tail -c +$((${tailskip}+1)) "${src}" 2>/dev/null \
142 | head -c $((${metaskip}-${tailskip})) \ 142 | head -c $((${metaskip}-${tailskip})) \
143 | tar --no-same-owner -xf - 143 | tar --no-same-owner -xf -
144 else 144 else
145 tail -c +$((${tailskip}+1)) ${src} 2>/dev/null \ 145 tail -c +$((${tailskip}+1)) "${src}" 2>/dev/null \
146 | head -c $((${metaskip}-${tailskip})) \ 146 | head -c $((${metaskip}-${tailskip})) \
147 > ${datafile} 147 > ${datafile}
148 fi 148 fi
149 fi 149 fi
150 true 150 true
194 ;; 194 ;;
195 2.1.3) 195 2.1.3)
196 skip=`grep -a ^offset= "${src}" | awk '{print $3}'` 196 skip=`grep -a ^offset= "${src}" | awk '{print $3}'`
197 (( skip++ )) 197 (( skip++ ))
198 ;; 198 ;;
199 2.1.4|2.1.5) 199 2.1.4|2.1.5|2.1.6)
200 skip=$(grep -a offset=.*head.*wc "${src}" | awk '{print $3}' | head -n 1) 200 skip=$(grep -a offset=.*head.*wc "${src}" | awk '{print $3}' | head -n 1)
201 skip=$(head -n ${skip} "${src}" | wc -c) 201 skip=$(head -n ${skip} "${src}" | wc -c)
202 exe="dd" 202 exe="dd"
203 ;; 203 ;;
204 *) 204 *)
216 dd) exe="dd ibs=${skip} skip=1 if='${src}'";; 216 dd) exe="dd ibs=${skip} skip=1 if='${src}'";;
217 *) die "makeself cant handle exe '${exe}'" 217 *) die "makeself cant handle exe '${exe}'"
218 esac 218 esac
219 219
220 # lets grab the first few bytes of the file to figure out what kind of archive it is 220 # lets grab the first few bytes of the file to figure out what kind of archive it is
221 local filetype tmpfile=$(emktemp) 221 local filetype tmpfile="${T}/${FUNCNAME}"
222 eval ${exe} 2>/dev/null | head -c 512 > "${tmpfile}" 222 eval ${exe} 2>/dev/null | head -c 512 > "${tmpfile}"
223 filetype=$(file -b "${tmpfile}") || die 223 filetype=$(file -b "${tmpfile}") || die
224 case ${filetype} in 224 case ${filetype} in
225 *tar\ archive*) 225 *tar\ archive*)
226 eval ${exe} | tar --no-same-owner -xf - 226 eval ${exe} | tar --no-same-owner -xf -
296 *) arch="" ;; 296 *) arch="" ;;
297 esac 297 esac
298 298
299 # finally do the unpack 299 # finally do the unpack
300 if [[ -z ${arch}${comp} ]] ; then 300 if [[ -z ${arch}${comp} ]] ; then
301 unpack "${a}" 301 unpack "$1"
302 return $? 302 return $?
303 fi 303 fi
304 304
305 [[ ${arch} != unpack_* ]] && unpack_banner "${a}" 305 [[ ${arch} != unpack_* ]] && unpack_banner "${a}"
306 306

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