source: trunk/minix/commands/ash/mktokens@ 20

#!/bin/sh -
#
# Copyright (c) 1991 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. All advertising materials mentioning features or use of this software
#    must display the following acknowledgement:
#       This product includes software developed by the University of
#       California, Berkeley and its contributors.
# 4. 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    5.1 (Berkeley) 3/7/91

# All calls to awk removed, because Minix bawk is deficient.  (kjb)

# 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.

cat > /tmp/ka$$ <<\!
TEOF    1       end of file
TNL     0       newline
TSEMI   0       ";"
TBACKGND 0      "&"
TAND    0       "&&"
TOR     0       "||"
TPIPE   0       "|"
TLP     0       "("
TRP     1       ")"
TENDCASE 1      ";;"
TENDBQUOTE 1    "`"
TREDIR  0       redirection
TWORD   0       word
TIF     0       "if"
TTHEN   1       "then"
TELSE   1       "else"
TELIF   1       "elif"
TFI     1       "fi"
TWHILE  0       "while"
TUNTIL  0       "until"
TFOR    0       "for"
TDO     1       "do"
TDONE   1       "done"
TBEGIN  0       "{"
TEND    1       "}"
TCASE   0       "case"
TESAC   1       "esac"
!
nl=`wc -l /tmp/ka$$`
exec > token.def
i=0
while read line
do
        set -$- $line
        echo "#define $1 $i"
        i=`expr $i + 1`
done </tmp/ka$$
echo '
/* Array indicating which tokens mark the end of a list */
const char tokendlist[] = {'
while read line
do
        set -$- $line
        echo "  $2,"
done </tmp/ka$$
echo '};

char *const tokname[] = {'
sed -e 's/"/\\"/g' \
    -e 's/[^     ]*[     ][      ]*[^    ]*[     ][      ]*\(.*\)/      "\1",/' \
    /tmp/ka$$
echo '};
'
i=0
go=
sed 's/"//g' /tmp/ka$$ |
        while read line
        do
                set -$- $line
                if [ "$1" = TIF ]
                then
                        echo "#define KWDOFFSET $i"
                        echo
                        echo "char *const parsekwd[] = {"
                        go=true
                fi
                if [ "$go" ]
                then
                        echo "  \"$3\","
                fi
                i=`expr $i + 1`
        done
echo '  0
};'

rm /tmp/ka$$