commands/ash/bltin/mkexpr.sh

   1 #!/bin/sh
   2 # Copyright 1989 by Kenneth Almquist.  All rights reserved.
   3 #
   4 # This file is part of ash.  Ash is distributed under the terms specified
   5 # by the Ash General Public License.  See the file named LICENSE.
   6
   7 # All calls to awk removed, because Minix bawk is deficient.  (kjb)
   8
   9 if [ $# -ne 2 ]
  10 then
  11         echo "Usage: $0 <unary_op> <binary_op>" >&2
  12         exit 1
  13 fi
  14 unary_op="$1"
  15 binary_op="$2"
  16
  17 exec > operators.h
  18 i=0
  19 sed -e '/^[^#]/!d' "$unary_op" "$binary_op" | while read line
  20 do
  21         set -$- $line
  22         echo "#define $1 $i"
  23         i=`expr $i + 1`
  24 done
  25 echo
  26 echo "#define FIRST_BINARY_OP" `sed -e '/^[^#]/!d' "$unary_op" | wc -l`
  27 echo '
  28 #define OP_INT 1                /* arguments to operator are integer */
  29 #define OP_STRING 2             /* arguments to operator are string */
  30 #define OP_FILE 3               /* argument is a file name */
  31
  32 extern char *const unary_op[];
  33 extern char *const binary_op[];
  34 extern const char op_priority[];
  35 extern const char op_argflag[];'
  36
  37 exec > operators.c
  38 echo '/*
  39  * Operators used in the expr/test command.
  40  */
  41
  42 #include <stddef.h>
  43 #include "shell.h"
  44 #include "operators.h"
  45
  46 char *const unary_op[] = {'
  47 sed -e '/^[^#]/!d
  48         s/[     ][      ]*/ /g
  49         s/^[^ ][^ ]* \([^ ][^ ]*\).*/      "\1",/
  50         ' "$unary_op"
  51 echo '      NULL
  52 };
  53
  54 char *const binary_op[] = {'
  55 sed -e '/^[^#]/!d
  56         s/[     ][      ]*/ /g
  57         s/^[^ ][^ ]* \([^ ][^ ]*\).*/      "\1",/
  58         ' "$binary_op"
  59 echo '      NULL
  60 };
  61
  62 const char op_priority[] = {'
  63 sed -e '/^[^#]/!d
  64         s/[     ][      ]*/ /g
  65         s/^[^ ][^ ]* [^ ][^ ]* \([^ ][^ ]*\).*/      \1,/
  66         ' "$unary_op" "$binary_op"
  67 echo '};
  68
  69 const char op_argflag[] = {'
  70 sed -e '/^[^#]/!d
  71         s/[     ][      ]*/ /g
  72         s/^[^ ][^ ]* [^ ][^ ]* [^ ][^ ]*$/& 0/
  73         s/^[^ ][^ ]* [^ ][^ ]* [^ ][^ ]* \([^ ][^ ]*\)/      \1,/
  74         ' "$unary_op" "$binary_op"
  75 echo '};'