src/ash/options.h

   1 /*      $NetBSD: options.h,v 1.18 2005/05/07 19:52:17 dsl Exp $ */
   2
   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  *      @(#)options.h   8.2 (Berkeley) 5/4/95
  35  */
  36
  37 struct shparam {
  38         int nparam;             /* # of positional parameters (without $0) */
  39         unsigned char malloc;   /* if parameter list dynamically allocated */
  40         unsigned char reset;    /* if getopts has been reset */
  41         char **p;               /* parameter list */
  42         char **optnext;         /* next parameter to be processed by getopts */
  43         char *optptr;           /* used by getopts */
  44 };
  45
  46
  47 struct optent {
  48         const char *name;               /* for set -o <name> */
  49         const char letter;              /* set [+/-]<letter> and $- */
  50         const char opt_set;             /* mutually exclusive option set */
  51         char val;                       /* value of <letter>flag */
  52 };
  53
  54 /* Those marked [U] are required by posix, but have no effect! */
  55
  56 #ifdef DEFINE_OPTIONS
  57 #define DEF_OPTS(name, letter, opt_set) {name, letter, opt_set, 0},
  58 struct optent optlist[] = {
  59 #else
  60 #define DEF_OPTS(name, letter, opt_set)
  61 #endif
  62 #define DEF_OPT(name,letter) DEF_OPTS(name, letter, 0)
  63
  64 DEF_OPT( "errexit",     'e' )   /* exit on error */
  65 #define eflag optlist[0].val
  66 DEF_OPT( "noglob",      'f' )   /* no pathname expansion */
  67 #define fflag optlist[1].val
  68 DEF_OPT( "ignoreeof",   'I' )   /* do not exit on EOF */
  69 #define Iflag optlist[2].val
  70 DEF_OPT( "interactive",'i' )    /* interactive shell */
  71 #define iflag optlist[3].val
  72 DEF_OPT( "monitor",     'm' )   /* job control */
  73 #define mflag optlist[4].val
  74 DEF_OPT( "noexec",      'n' )   /* [U] do not exec commands */
  75 #define nflag optlist[5].val
  76 DEF_OPT( "stdin",       's' )   /* read from stdin */
  77 #define sflag optlist[6].val
  78 DEF_OPT( "xtrace",      'x' )   /* trace after expansion */
  79 #define xflag optlist[7].val
  80 DEF_OPT( "verbose",     'v' )   /* trace read input */
  81 #define vflag optlist[8].val
  82 DEF_OPTS( "vi",         'V', 'V' )      /* vi style editing */
  83 #define Vflag optlist[9].val
  84 DEF_OPTS( "emacs",      'E', 'V' )      /* emacs style editing */
  85 #define Eflag optlist[10].val
  86 DEF_OPT( "noclobber",   'C' )   /* do not overwrite files with > */
  87 #define Cflag optlist[11].val
  88 DEF_OPT( "allexport",   'a' )   /* export all variables */
  89 #define aflag optlist[12].val
  90 DEF_OPT( "notify",      'b' )   /* [U] report completion of background jobs */
  91 #define bflag optlist[13].val
  92 DEF_OPT( "nounset",     'u' )   /* error expansion of unset variables */
  93 #define uflag optlist[14].val
  94 DEF_OPT( "quietprofile", 'q' )
  95 #define qflag optlist[15].val
  96 DEF_OPT( "nolog",       0 )     /* [U] no functon defs in command history */
  97 #define nolog optlist[16].val
  98 DEF_OPT( "cdprint",     0 )     /* always print result of cd */
  99 #define cdprint optlist[17].val
 100 DEF_OPT( "tabcomplete", 0 )     /* <tab> causes filename expansion */
 101 #define tabcomplete optlist[18].val
 102 #ifdef DEBUG
 103 DEF_OPT( "debug",       0 )     /* enable debug prints */
 104 #define debug optlist[19].val
 105 #endif
 106
 107 #ifdef DEFINE_OPTIONS
 108         { 0, 0, 0, 0 },
 109 };
 110 #define NOPTS (sizeof optlist / sizeof optlist[0] - 1)
 111 int sizeof_optlist = sizeof optlist;
 112 #else
 113 extern struct optent optlist[];
 114 extern int sizeof_optlist;
 115 #endif
 116
 117
 118 extern char *minusc;            /* argument to -c option */
 119 extern char *arg0;              /* $0 */
 120 extern struct shparam shellparam;  /* $@ */
 121 extern char **argptr;           /* argument list for builtin commands */
 122 extern char *optionarg;         /* set by nextopt */
 123 extern char *optptr;            /* used by nextopt */
 124
 125 void procargs(int, char **);
 126 void optschanged(void);
 127 void setparam(char **);
 128 void freeparam(volatile struct shparam *);
 129 int shiftcmd(int, char **);
 130 int setcmd(int, char **);
 131 int getoptscmd(int, char **);
 132 int nextopt(const char *);
 133 void getoptsreset(const char *);