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#!/bin/sh -euf
#
# DPP - Bonus shell implementation.
#
# Copyright (c) 2026 Dylan Araps
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#
: "${DPP_EOF_MARKER:=___DPPEOFMARKER___}"
: "${DPP_SHELL:=/bin/sh}"
{
echo "#!$DPP_SHELL"
echo "# This file has been generated by dylanaraps/dpp."
echo "(set -euo pipefail 2>/dev/null) && set -eo pipefail || set -eu"
echo "export DPP_VERSION=1.0.1"
echo "export DPP_LEVEL=\$((DPP_LEVEL + 1))"
echo "set -- $*"
echo "${DPP_INCLUDE:+. \""$DPP_INCLUDE"\"}"
while IFS= read -r l; do case $l in
"${DPP_BLOCK:=!!}"*)
case ${b:-0} in 2)
echo "$DPP_EOF_MARKER"
b=0
esac
l=${l#"$DPP_BLOCK"}
case $l in
'') b=$((!b)) ;;
" "*) b=0 l=${l#?} ;;
*) b=0 ;;
esac
echo "$l"
;;
*)
case $l in *\\) l=$l\\; esac
case ${b:-0} in 0)
echo "\${DPP_CAT:=cat} << $DPP_EOF_MARKER"
b=2
esac
echo "$l"
esac done
case $b in
1) echo "error: DPP_BLOCK not closed" >&2; exit 1 ;;
2) echo "$DPP_EOF_MARKER" ;;
esac
} | case ${0##*/} in
dpp-compile) cat ;;
*) "$DPP_SHELL" ;;
esac
|
