commands/ash/mktokens

   1 #!/bin/sh -
   2 #
   3 # Copyright (c) 1991, 1993
   4 #       The Regents of the University of California.  All rights reserved.
   5 #
   6 # This code is derived from software contributed to Berkeley by
   7 # Kenneth Almquist.
   8 #
   9 # Redistribution and use in source and binary forms, with or without
  10 # modification, are permitted provided that the following conditions
  11 # are met:
  12 # 1. Redistributions of source code must retain the above copyright
  13 #    notice, this list of conditions and the following disclaimer.
  14 # 2. Redistributions in binary form must reproduce the above copyright
  15 #    notice, this list of conditions and the following disclaimer in the
  16 #    documentation and/or other materials provided with the distribution.
  17 # 4. Neither the name of the University nor the names of its contributors
  18 #    may be used to endorse or promote products derived from this software
  19 #    without specific prior written permission.
  20 #
  21 # THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24 # ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31 # SUCH DAMAGE.
  32 #
  33 #       @(#)mktokens    8.1 (Berkeley) 5/31/93
  34 # $FreeBSD: src/bin/sh/mktokens,v 1.9 2004/04/06 20:06:51 markm Exp $
  35
  36 # All calls to awk removed, because Minix bawk is deficient.  (kjb)
  37
  38 # The following is a list of tokens.  The second column is nonzero if the
  39 # token marks the end of a list.  The third column is the name to print in
  40 # error messages.
  41
  42 #temp=`/usr/bin/mktemp -t ka`
  43 temp=/tmp/mkt$$
  44 cat > $temp <<\!
  45 TEOF    1       end of file
  46 TNL     0       newline
  47 TSEMI   0       ";"
  48 TBACKGND 0      "&"
  49 TAND    0       "&&"
  50 TOR     0       "||"
  51 TPIPE   0       "|"
  52 TLP     0       "("
  53 TRP     1       ")"
  54 TENDCASE 1      ";;"
  55 TENDBQUOTE 1    "`"
  56 TREDIR  0       redirection
  57 TWORD   0       word
  58 TIF     0       "if"
  59 TTHEN   1       "then"
  60 TELSE   1       "else"
  61 TELIF   1       "elif"
  62 TFI     1       "fi"
  63 TWHILE  0       "while"
  64 TUNTIL  0       "until"
  65 TFOR    0       "for"
  66 TDO     1       "do"
  67 TDONE   1       "done"
  68 TBEGIN  0       "{"
  69 TEND    1       "}"
  70 TCASE   0       "case"
  71 TESAC   1       "esac"
  72 TNOT    0       "!"
  73 !
  74 nl=`wc -l $temp`
  75 exec > token.h
  76 i=0
  77 while read line
  78 do
  79         set -$- $line
  80         echo "#define $1 $i"
  81         i=`expr $i + 1`
  82 done <$temp
  83 echo '
  84 /* Array indicating which tokens mark the end of a list */
  85 const char tokendlist[] = {'
  86 while read line
  87 do
  88         set -$- $line
  89         echo "  $2,"
  90 done <$temp
  91 echo '};
  92
  93 const char *const tokname[] = {'
  94 sed -e 's/"/\\"/g' \
  95     -e 's/[^     ]*[     ][      ]*[^    ]*[     ][      ]*\(.*\)/      "\1",/' \
  96     $temp
  97 echo '};
  98 '
  99 i=0
 100 go=
 101 sed 's/"//g' $temp |
 102         while read line
 103         do
 104                 set -$- $line
 105                 if [ "$1" = TIF ]
 106                 then
 107                         echo "#define KWDOFFSET $i"
 108                         echo
 109                         echo "const char *const parsekwd[] = {"
 110                         go=true
 111                 fi
 112                 if [ "$go" ]
 113                 then
 114                         echo "  \"$3\","
 115                 fi
 116                 i=`expr $i + 1`
 117         done
 118 echo '  0
 119 };'
 120
 121 rm $temp
 122
 123 #
 124 # $PchId: mktokens,v 1.5 2006/05/22 12:43:35 philip Exp $