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mktokens revision 1.15 
      1 #!/bin/sh -
      2 #	$NetBSD: mktokens,v 1.15 2023/04/07 10:34:13 kre Exp $
      3 #
      4 # Copyright (c) 1991, 1993
      5 #	The Regents of the University of California.  All rights reserved.
      6 #
      7 # This code is derived from software contributed to Berkeley by
      8 # Kenneth Almquist.
      9 #
     10 # Redistribution and use in source and binary forms, with or without
     11 # modification, are permitted provided that the following conditions
     12 # are met:
     13 # 1. Redistributions of source code must retain the above copyright
     14 #    notice, this list of conditions and the following disclaimer.
     15 # 2. Redistributions in binary form must reproduce the above copyright
     16 #    notice, this list of conditions and the following disclaimer in the
     17 #    documentation and/or other materials provided with the distribution.
     18 # 3. Neither the name of the University nor the names of its contributors
     19 #    may be used to endorse or promote products derived from this software
     20 #    without specific prior written permission.
     21 #
     22 # THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25 # ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32 # SUCH DAMAGE.
     33 #
     34 #	@(#)mktokens	8.1 (Berkeley) 5/31/93
     35 
     36 : ${AWK:=awk}
     37 : ${SED:=sed}
     38 
     39 # The following is a list of tokens.  The second column is nonzero if the
     40 # token marks the end of a list.  The third column is the name to print in
     41 # error messages.
     42 
     43 # Note that all the keyword tokens come after TWORD, and all the others
     44 # come before it.   We rely upon that relationship - keep it!
     45 
     46 cat > /tmp/ka$$ <<\!
     47 TEOF	1	end of file
     48 TNL	0	newline
     49 TSEMI	0	";"
     50 TBACKGND 0	"&"
     51 TAND	0	"&&"
     52 TOR	0	"||"
     53 TPIPE	0	"|"
     54 TLP	0	"("
     55 TRP	1	")"
     56 TENDCASE 1	";;"
     57 TCASEFALL 1	";&"
     58 TENDBQUOTE 1	"`"
     59 TREDIR	0	redirection
     60 TWORD	0	word
     61 TIF	0	"if"
     62 TTHEN	1	"then"
     63 TELSE	1	"else"
     64 TELIF	1	"elif"
     65 TFI	1	"fi"
     66 TWHILE	0	"while"
     67 TUNTIL	0	"until"
     68 TFOR	0	"for"
     69 TDO	1	"do"
     70 TDONE	1	"done"
     71 TBEGIN	0	"{"
     72 TEND	1	"}"
     73 TCASE	0	"case"
     74 TESAC	1	"esac"
     75 TNOT	0	"!"
     76 !
     77 nl=`wc -l /tmp/ka$$`
     78 exec > token.h
     79 ${AWK} '{print "#define " $1 " " NR-1}' /tmp/ka$$
     80 echo '
     81 /* Array indicating which tokens mark the end of a list */
     82 const char tokendlist[] = {'
     83 ${AWK} '{print "\t" $2 ","}' /tmp/ka$$
     84 echo '};
     85 
     86 const char *const tokname[] = {'
     87 ${SED} -e 's/"/\\"/g' \
     88     -e 's/[^	 ]*[	 ][	 ]*[^	 ]*[	 ][	 ]*\(.*\)/	"\1",/' \
     89     /tmp/ka$$
     90 echo '};
     91 '
     92 ${SED} 's/"//g' /tmp/ka$$ | ${AWK} '
     93 /TWORD/{print "#define KWDOFFSET " NR; print "";
     94       print "const char *const parsekwd[] = {"}
     95 /TIF/,/neverfound/{print "	\"" $3 "\","}'
     96 echo '	0
     97 };'
     98 
     99 rm /tmp/ka$$
    100