bin/sh/mktokens

   1 #!/bin/sh -
   2 #       $NetBSD: mktokens,v 1.12 2008/10/25 22:18:15 apb 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 cat > /tmp/ka$$ <<\!
  44 TEOF    1       end of file
  45 TNL     0       newline
  46 TSEMI   0       ";"
  47 TBACKGND 0      "&"
  48 TAND    0       "&&"
  49 TOR     0       "||"
  50 TPIPE   0       "|"
  51 TLP     0       "("
  52 TRP     1       ")"
  53 TENDCASE 1      ";;"
  54 TENDBQUOTE 1    "`"
  55 TREDIR  0       redirection
  56 TWORD   0       word
  57 TIF     0       "if"
  58 TTHEN   1       "then"
  59 TELSE   1       "else"
  60 TELIF   1       "elif"
  61 TFI     1       "fi"
  62 TWHILE  0       "while"
  63 TUNTIL  0       "until"
  64 TFOR    0       "for"
  65 TDO     1       "do"
  66 TDONE   1       "done"
  67 TBEGIN  0       "{"
  68 TEND    1       "}"
  69 TCASE   0       "case"
  70 TESAC   1       "esac"
  71 TNOT    0       "!"
  72 !
  73 nl=`wc -l /tmp/ka$$`
  74 exec > token.h
  75 ${AWK} '{print "#define " $1 " " NR-1}' /tmp/ka$$
  76 echo '
  77 /* Array indicating which tokens mark the end of a list */
  78 const char tokendlist[] = {'
  79 ${AWK} '{print "\t" $2 ","}' /tmp/ka$$
  80 echo '};
  81
  82 const char *const tokname[] = {'
  83 ${SED} -e 's/"/\\"/g' \
  84     -e 's/[^     ]*[     ][      ]*[^    ]*[     ][      ]*\(.*\)/      "\1",/' \
  85     /tmp/ka$$
  86 echo '};
  87 '
  88 ${SED} 's/"//g' /tmp/ka$$ | ${AWK} '
  89 /TIF/{print "#define KWDOFFSET " NR-1; print "";
  90       print "const char *const parsekwd[] = {"}
  91 /TIF/,/neverfound/{print "      \"" $3 "\","}'
  92 echo '  0
  93 };'
  94
  95 rm /tmp/ka$$