1c8d9b58f1
is more bulletproof across different versions of awk. From PR pkg/33410 by Aleksey Cheusov.
65 lines
2.6 KiB
Awk
65 lines
2.6 KiB
Awk
# $NetBSD: plist-subst.awk,v 1.3 2006/05/02 14:32:35 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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### Build an array "substitute" of <regexp, value> pairs, that may be used
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### to do variable substitutions in PLIST entries. The variables which
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### will be substituted are passed in the environment variable
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### PLIST_SUBST_VARS, and the named variables should be found in the
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### shell environment.
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###
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BEGIN {
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PLIST_SUBST_VARS = ENVIRON["PLIST_SUBST_VARS"]
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split(PLIST_SUBST_VARS, vars, " ")
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for (i in vars) {
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value = ENVIRON[vars[i]]
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var = vars[i]
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sub("^PLIST_", "", var)
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regexp = "[$][{]" var "[}]"
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substitute[regexp] = value
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}
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}
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###
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### For each entry, replace all ${...} variables with their respective
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### values taken from the environment.
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###
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{
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for (regexp in substitute) {
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gsub(regexp, substitute[regexp])
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}
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}
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