First pass at a script that replaces many of the variables, loops and
logic in bsd.pkg.extract.mk. This script "knows" how to extract files depending on their file extension.
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jlam
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1 changed files with 190 additions and 0 deletions
190
mk/scripts/extract
Executable file
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mk/scripts/extract
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#!/bin/sh
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#
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# $NetBSD: extract,v 1.1 2006/01/20 18:00:45 jlam Exp $
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#
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# Copyright (c) 2006 The NetBSD Foundation, Inc.
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# All rights reserved.
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#
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# This code is derived from software contributed to The NetBSD Foundation
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# by Johnny C. Lam.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. All advertising materials mentioning features or use of this software
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# must display the following acknowledgement:
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# This product includes software developed by the NetBSD
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# Foundation, Inc. and its contributors.
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# 4. Neither the name of The NetBSD Foundation nor the names of its
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# contributors may be used to endorse or promote products derived
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# from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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######################################################################
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#
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# NAME
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# extract -- extract distfile, regardless of format
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#
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# SYNOPSIS
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# extract [-t tarprog] [-x] distfile [file ...]
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#
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# DESCRIPTION
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# extract will unpack the contents of the named distfile into the
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# current working directory. If any optional files are specified
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# then only they will be extracted from the distfile, provided that
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# the underlying tool supports this ability. If the -x option is
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# specified, then the optional files are excluded from extraction
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# instead.
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#
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# OPTIONS
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# -t tarprog This specifies the tool to use to extract tar/ustar
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# archives, and may be either "tar" or "pax", or the
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# full path to the program.
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#
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# -x This causes the optional files listed on the
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# command line to be excluded from extraction,
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# provided the underlying tool supports this
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# ability.
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#
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# ENVIRONMENT
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# EXTRACT_OPTS_LHA
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# EXTRACT_OPTS_RAR
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# EXTRACT_OPTS_PAX
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# EXTRACT_OPTS_TAR
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# EXTRACT_OPTS_ZIP
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# EXTRACT_OPTS_ZOO
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# These variables set additional arguments passed to the
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# underlying extraction tool to unpack their respective
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# archive formats.
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#
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######################################################################
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: ${BZCAT:=bzcat}
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: ${CAT:=cat}
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: ${ECHO:=echo}
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: ${GZCAT:=gzcat}
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: ${LHA:=lha}
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: ${PAX:=pax}
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: ${SH:=sh}
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: ${TAR:=tar}
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: ${TEST:=test}
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: ${UNRAR:=unrar}
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: ${UNZIP:=unzip}
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: ${UNZOO:=unzoo}
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self="${0##*/}"
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usage() {
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${ECHO} 1>&2 "usage: $self [-t tarprog] [-x] distfile [file ...]"
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}
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decompress_cat="${CAT}"
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exclude=no
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exclude_flag=
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extract_using=tar
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# Process optional arguments
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while ${TEST} $# -gt 0; do
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case "$1" in
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-t) extract_using="$1"; shift 2 ;;
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-x) exclude=yes; shift ;;
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--) shift; break ;;
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-*) ${ECHO} 1>&2 "$self: unknown option -- ${1#-}"
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usage
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exit 1
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;;
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*) break ;;
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esac
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done
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case "$extract_using" in
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/*tar|/*pax) tarprog="$extract_using" ;;
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*tar) tarprog="${TAR}" ;;
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*pax) tarprog="${PAX}" ;;
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esac
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# Process required arguments
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${TEST} $# -gt 0 || { usage; exit 1; }
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distfile="$1"; shift
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# Set the command to decompress the file and write the contents to stdout.
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case "$distfile" in
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*.gz|*.tgz) decompress_cat="${GZCAT}" ;;
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*.bz2|*.tbz|*.tbz2) decompress_cat="${BZCAT}" ;;
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*.Z) decompress_cat="${GZCAT}" ;;
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esac
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# Main extraction section -- this maps the suffix on the specified distfile
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# the correct tool and extraction procedure to perform the extraction.
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#
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case "$distfile" in
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*.tar.gz|*.tgz|*_tar.gz|*.tar.bz2|*.tbz|*.tbz2|*.tar.Z|*.tar)
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case "$extract_using" in
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*pax)
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distfile="$1"; shift
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case "$extract_using" in
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/*) paxprog="$extract_using" ;;
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*) paxprog="${PAX}" ;;
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esac
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${TEST} "$exclude" = no || exclude_flag="-c"
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$decompress_cat "$distfile" |
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$paxprog ${EXTRACT_OPTS_PAX} $exclude_flag -O -r "$@"
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;;
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*tar)
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case "$extract_using" in
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/*) tarprog="$extract_using" ;;
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*) tarprog="${TAR}" ;;
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esac
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$decompress_cat "$distfile" |
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$tarprog ${EXTRACT_OPTS_TAR} -xf - "$@"
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;;
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*)
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${ECHO} 1>&2 "$self: unknown tar program: $extract_using"
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exit 1
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esac
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;;
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*.shar.gz|*.shar.bz2|*.shar.Z|*.shar)
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$decompress_cat "$distfile" | ${SH}
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;;
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*.zip)
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: ${EXTRACT_OPTS_ZOO=-Laqo}
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${TEST} "$exclude" = "no" || exclude_flag="-x"
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${UNZIP} ${EXTRACT_OPTS_ZOO} "$distfile" $exclude_flag "$@"
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;;
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*.lha|*.lzh)
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: ${EXTRACT_OPTS_LHA=q}
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${LHA} x$extract_options "$distfile" "$@"
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;;
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*.Z|*.bz2|*.gz)
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target="${distfile##*/}"; target="${target%.*}"
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$decompress_cat "$distfile" > "$target"
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;;
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*.zoo)
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${UNZOO} -x ${EXTRACT_OPTS_ZOO} "$distfile" "$@"
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;;
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*.rar)
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: ${EXTRACT_OPTS_RAR=-inul}
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${UNRAR} -x ${EXTRACT_OPTS_RAR} "$distfile" "$@"
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;;
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*)
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${ECHO} 1>&2 "$self: unable to extract: $1"
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exit 1
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;;
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esac
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