#! /usr/bin/ksh
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#
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#
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# This file and its contents are supplied under the terms of the
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# Common Development and Distribution License ("CDDL"), version 1.0.
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# You may only use this file in accordance with the terms of version
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# 1.0 of the CDDL.
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#
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# A full copy of the text of the CDDL should have accompanied this
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# source. A copy of the CDDL is also available via the Internet at
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# http://www.illumos.org/license/CDDL.
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#
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#
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# Copyright 2022 Marcel Telka
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#
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function usage
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{
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[[ -n "$1" ]] && printf "ERROR: %s\n\n" "$1" >&2
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printf "Usage: license-detector [-d] LICENSE_FILE\n" >&2
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[[ -n "$1" ]] && exit 1
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exit 0
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}
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DEBUG=0
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while getopts ":hd" OPT ; do
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case "$OPT" in
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"?"|"h") usage ;;
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"d") DEBUG=1 ;;
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esac
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done
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shift $((OPTIND - 1))
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(($# == 0)) && usage
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(($# > 1)) && usage "Too many arguments"
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LICENSE_FILE="$1"
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[[ -e "$LICENSE_FILE" ]] || usage "$LICENSE_FILE not found"
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[[ -d "$LICENSE_FILE" ]] && usage "$LICENSE_FILE is directory"
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[[ -r "$LICENSE_FILE" ]] || usage "Unable to read $LICENSE_FILE"
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WS_TOOLS=$(dirname $0)
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F="$LICENSE_FILE"
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if grep -A 1 "Apache License" "$F" | grep -q "Version 2\.0, January 2004" ; then
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D="Apache-2.0"
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[[ -n "$L" ]] && L="$L OR " ; L="$L$D"
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fi
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if grep -q -i "Artistic License" "$F" ; then
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if ! grep -q -i "Artistic License.*2" "$F" ; then
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D="Artistic-1.0-TODO"
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grep -q "7\. C subroutines" "$F" && grep -q "10\. THIS PACKAGE IS PROVIDED" "$F" && D="Artistic-1.0-Perl"
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grep -q "7\. C or perl subroutines" "$F" && grep -q "10\. THIS PACKAGE IS PROVIDED" "$F" && D="Artistic-1.0-cl8"
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grep -q "7\. C or perl subroutines" "$F" && grep -q "9\. THIS PACKAGE IS PROVIDED" "$F" && D="Artistic-1.0"
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else
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D="Artistic-2.0"
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fi
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[[ -n "$L" ]] && L="$L OR " ; L="$L$D"
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fi
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if grep -A 1 "GNU GENERAL PUBLIC LICENSE" "$F" | grep -q "Version 1, February 1989" ; then
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D="GPL-1.0-only"
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grep -A 2 "GNU General Public License as published by the" "$F" | grep -q "or (at your option) any" && D="GPL-1.0-or-later"
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[[ -n "$L" ]] && L="$L OR " ; L="$L$D"
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fi
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if grep -i -A 1 "GENERAL PUBLIC LICENSE" "$F" | grep -q "Version 2, June 1991" ; then
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D="GPL-2.0-only"
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grep -A 2 "GNU General Public License as published by the" "$F" | grep -q "or (at your option) any" && D="GPL-2.0-or-later"
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[[ -n "$L" ]] && L="$L OR " ; L="$L$D"
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fi
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if grep -A 1 "GNU LIBRARY GENERAL PUBLIC LICENSE" "$F" | grep -q "Version 2, June 1991" ; then
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D="LGPL-2.0-only"
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[[ -n "$L" ]] && L="$L OR " ; L="$L$D"
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fi
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TMPFILE=$(mktemp -q)
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[[ -z "$TMPFILE" ]] && printf "ERROR: Temporary file creation failed\n" >&2 && exit 1
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for l in "$WS_TOOLS"/licenses/* ; do
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[[ -f "$l" ]] || continue
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# skip filters
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[[ "$l" != "${l%.filter}" ]] && continue
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cat <<#EOF > "$TMPFILE"
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dos2unix -ascii \\
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| awk '/^#/{next}/^\$/{\$0="\n"}1' ORS=' ' \\
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| sed -E -e 's/[[:space:]]+/ /g' -e 's/^ //' -e 's/ \$//' -e '/^\$/d' \\
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EOF
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# Apply filter if any
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[[ -x "$l.filter" ]] && printf "\t| %s \\\n" "$l.filter" >> "$TMPFILE"
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cat <<#EOF >> "$TMPFILE"
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| tr ' ' '\\n' | fmt
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EOF
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REDIRECT="/dev/null"
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if ((DEBUG)) ; then
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REDIRECT="/dev/stdout"
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printf "[DBG] TEMPLATE %s\n" "${l##*/}"
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. "$TMPFILE" < "$l"
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printf "[DBG] FILE\n"
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. "$TMPFILE" < "$F"
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printf "[DBG] DIFFS\n"
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fi
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diff -i <(. "$TMPFILE" < "$l") <(. "$TMPFILE" < "$F") > "$REDIRECT" || continue
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[[ -n "$L" ]] && L="$L OR "
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l="${l##*/}"
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l="${l#header.}"
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l="${l#license.}"
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L="$L$l"
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done
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rm -f "$TMPFILE"
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[[ -n "$L" ]] && printf "%s\n" "$L"
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