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bsdgames/substscr
2012-02-25 18:04:33 +01:00

100 lines
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#!/bin/sh
# substscr - substitute parameters to create a file from a .in.
#
# Copyright (c) 1999, 2004 Joseph Samuel Myers.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. The name of the author may not be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
# First argument is some combination of:
# r to generate makefile rules
# g to generate the file in question
# Second argument gives the style of comment:
# c for C comment
# h for generic # comment
# m for manpage comment
# n for none
# s for shell comment
# Third argument is the source file.
# Fourth argument is the target file.
# The target gets its execute permissions from the source.
set -e
if [ $# != 4 ]; then
echo "usage: $0 action comment-style source target" >&2
exit 1
fi
action="$1"
style="$2"
source="$3"
target="$4"
if echo $action |grep -q g; then
echo "Generating $target from $source"
rm -f $target
case "$style" in
(c)
echo "/* Automatically generated from $source. Do not edit. */" >"$target"
;;
(h)
echo "# Automatically generated from $source. Do not edit." >"$target"
;;
(m)
echo ".\\\" Automatically generated from $source. Do not edit." >"$target"
;;
(n)
: >"$target"
;;
(s)
echo "#!/bin/sh" >"$target"
echo "# Automatically generated from $source. Do not edit." >>"$target"
;;
(*)
echo "$0: unknown comment style $style" >&2
exit 1
esac
sed -f subst.sed <"$source" >>"$target"
if [ -x "$source" ]; then
chmod a+x "$target"
fi
fi
if echo $action |grep -q r; then
# Append to subst.rules.
cat >>subst.rules <<EOF
$target: $source subst.sed substscr
./substscr g $style $source $target
EOF
fi