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+#!/bin/sh -
+# $NetBSD: mktokens,v 1.14 2017/07/26 03:46:54 kre Exp $
+#
+# Copyright (c) 1991, 1993
+# The Regents of the University of California. All rights reserved.
+#
+# This code is derived from software contributed to Berkeley by
+# Kenneth Almquist.
+#
+# 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. Neither the name of the University nor the names of its contributors
+# may be used to endorse or promote products derived from this software
+# without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
+#
+# @(#)mktokens 8.1 (Berkeley) 5/31/93
+
+: ${AWK:=awk}
+: ${SED:=sed}
+
+# The following is a list of tokens. The second column is nonzero if the
+# token marks the end of a list. The third column is the name to print in
+# error messages.
+
+# Note that all the keyword tokens come after TWORD, and all the others
+# come before it. We rely upon that relationship - keep it!
+
+cat > /tmp/ka$$ <<\!
+TEOF 1 end of file
+TNL 0 newline
+TSEMI 0 ";"
+TBACKGND 0 "&"
+TAND 0 "&&"
+TOR 0 "||"
+TPIPE 0 "|"
+TLP 0 "("
+TRP 1 ")"
+TENDCASE 1 ";;"
+TCASEFALL 1 ";&"
+TENDBQUOTE 1 "`"
+TREDIR 0 redirection
+TWORD 0 word
+TIF 0 "if"
+TTHEN 1 "then"
+TELSE 1 "else"
+TELIF 1 "elif"
+TFI 1 "fi"
+TWHILE 0 "while"
+TUNTIL 0 "until"
+TFOR 0 "for"
+TDO 1 "do"
+TDONE 1 "done"
+TBEGIN 0 "{"
+TEND 1 "}"
+TCASE 0 "case"
+TESAC 1 "esac"
+TNOT 0 "!"
+!
+nl=`wc -l /tmp/ka$$`
+exec > token.h
+${AWK} '{print "#define " $1 " " NR-1}' /tmp/ka$$
+echo '
+/* Array indicating which tokens mark the end of a list */
+const char tokendlist[] = {'
+${AWK} '{print "\t" $2 ","}' /tmp/ka$$
+echo '};
+
+const char *const tokname[] = {'
+${SED} -e 's/"/\\"/g' \
+ -e 's/[^ ]*[ ][ ]*[^ ]*[ ][ ]*\(.*\)/ "\1",/' \
+ /tmp/ka$$
+echo '};
+'
+${SED} 's/"//g' /tmp/ka$$ | ${AWK} '
+/TWORD/{print "#define KWDOFFSET " NR; print "";
+ print "const char *const parsekwd[] = {"}
+/TIF/,/neverfound/{print " \"" $3 "\","}'
+echo ' 0
+};'
+
+rm /tmp/ka$$