5293f7ab59
pkg_alternatives is a tool to manage the alternatives system provided by The NetBSD Packages Collection, also known as pkgsrc. It creates, configures and destroys generic wrappers used to run programs with similar interfaces. No objections in tech-pkg@. Agreed with jlam@, who has provided lots of design suggestions.
64 lines
2.3 KiB
Bash
64 lines
2.3 KiB
Bash
#!__SH__
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#
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# $NetBSD: wrapper.sh,v 1.1.1.1 2005/01/25 13:00:46 jmmv Exp $
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#
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# pkg_alternatives - Generic wrappers for programs with similar interfaces
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# Copyright (c) 2005 Julio M. Merino Vidal <jmmv@NetBSD.org>
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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
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# the documentation and/or other materials provided with the
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# distribution.
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# 3. Neither the name of author nor the names of its contributors may
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# be used to endorse or promote products derived from this software
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# without alternative 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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wrapper="__WRAPPER__"
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progname="${wrapper##*/} (wrapper)"
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if [ ! -f __DB_FILE__ ]; then
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echo "${progname}: cannot open __DB_FILE__" 1>&2
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exit 1
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fi
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if [ $(id -un) = __ROOT_USER__ ]; then
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userfile=
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else
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userfile=~/.pkg_alternatives/${wrapper}
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fi
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alternatives=$(cat ${userfile} __CONF_FILE__ __DB_FILE__ 2>/dev/null | \
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grep -v "^#" | tr ' ' '<27>')
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found=
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for a in ${alternatives}; do
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prog=$(echo ${a} | cut -d '<27>' -f 1)
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if [ -x ${prog} ]; then
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found=$(echo ${a} | tr '<27>' ' ')
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break
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fi
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done
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if [ -z "${found}" ]; then
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echo "${progname}: no alternatives found" 1>&2
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exit 1
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fi
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exec ${found} "${@}"
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