cde/programs/dtksh/ksh93/src/cmd/ksh93/bltins/cflow.c

   1 /*
   2  * CDE - Common Desktop Environment
   3  *
   4  * Copyright (c) 1993-2012, The Open Group. All rights reserved.
   5  *
   6  * These libraries and programs are free software; you can
   7  * redistribute them and/or modify them under the terms of the GNU
   8  * Lesser General Public License as published by the Free Software
   9  * Foundation; either version 2 of the License, or (at your option)
  10  * any later version.
  11  *
  12  * These libraries and programs are distributed in the hope that
  13  * they will be useful, but WITHOUT ANY WARRANTY; without even the
  14  * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  15  * PURPOSE. See the GNU Lesser General Public License for more
  16  * details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with these librararies and programs; if not, write
  20  * to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
  21  * Floor, Boston, MA 02110-1301 USA
  22  */
  23 /* $XConsortium: cflow.c /main/3 1995/11/01 16:27:48 rswiston $ */
  24 /***************************************************************
  25 *                                                              *
  26 *                      AT&T - PROPRIETARY                      *
  27 *                                                              *
  28 *        THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF        *
  29 *                    AT&T BELL LABORATORIES                    *
  30 *         AND IS NOT TO BE DISCLOSED OR USED EXCEPT IN         *
  31 *            ACCORDANCE WITH APPLICABLE AGREEMENTS             *
  32 *                                                              *
  33 *                Copyright (c) 1995 AT&T Corp.                 *
  34 *              Unpublished & Not for Publication               *
  35 *                     All Rights Reserved                      *
  36 *                                                              *
  37 *       The copyright notice above does not evidence any       *
  38 *      actual or intended publication of such source code      *
  39 *                                                              *
  40 *               This software was created by the               *
  41 *           Advanced Software Technology Department            *
  42 *                    AT&T Bell Laboratories                    *
  43 *                                                              *
  44 *               For further information contact                *
  45 *                    {research,attmail}!dgk                    *
  46 *                                                              *
  47 ***************************************************************/
  48
  49 /* : : generated by proto : : */
  50
  51 #if !defined(__PROTO__)
  52 #if defined(__STDC__) || defined(__cplusplus) || defined(_proto) || defined(c_plusplus)
  53 #if defined(__cplusplus)
  54 #define __MANGLE__      "C"
  55 #else
  56 #define __MANGLE__
  57 #endif
  58 #define __STDARG__
  59 #define __PROTO__(x)    x
  60 #define __OTORP__(x)
  61 #define __PARAM__(n,o)  n
  62 #if !defined(__STDC__) && !defined(__cplusplus)
  63 #if !defined(c_plusplus)
  64 #define const
  65 #endif
  66 #define signed
  67 #define void            int
  68 #define volatile
  69 #define __V_            char
  70 #else
  71 #define __V_            void
  72 #endif
  73 #else
  74 #define __PROTO__(x)    ()
  75 #define __OTORP__(x)    x
  76 #define __PARAM__(n,o)  o
  77 #define __MANGLE__
  78 #define __V_            char
  79 #define const
  80 #define signed
  81 #define void            int
  82 #define volatile
  83 #endif
  84 #if defined(__cplusplus) || defined(c_plusplus)
  85 #define __VARARG__      ...
  86 #else
  87 #define __VARARG__
  88 #endif
  89 #if defined(__STDARG__)
  90 #define __VA_START__(p,a)       va_start(p,a)
  91 #else
  92 #define __VA_START__(p,a)       va_start(p)
  93 #endif
  94 #endif
  95 #include        "defs.h"
  96 #include        <ast.h>
  97 #include        <error.h>
  98 #include        <ctype.h>
  99 #include        "shnodes.h"
 100 #include        "builtins.h"
 101
 102 /*
 103  * return and exit
 104  */
 105 int     b_ret_exit __PARAM__((register int n, register char *argv[],__V_ *extra), (n, argv, extra)) __OTORP__(register int n; register char *argv[];__V_ *extra;){
 106         struct checkpt *pp = (struct checkpt*)sh.jmplist;
 107         register char *arg;
 108         NOT_USED(extra);
 109         while((n = optget(argv,sh_optcflow))) switch(n)
 110         {
 111             case ':':
 112                 if(!strmatch(argv[opt_index],"[+-]+([0-9])"))
 113                         error(2, opt_arg);
 114                 goto done;
 115             case '?':
 116                 error(ERROR_usage(0), opt_arg);
 117                 return(2);
 118         }
 119 done:
 120         if(error_info.errors)
 121                 error(ERROR_usage(2),optusage((char*)0));
 122         pp->mode = (**argv=='e'?SH_JMPEXIT:SH_JMPFUN);
 123         argv += opt_index;
 124         n = (((arg= *argv)?atoi(arg):sh.oldexit)&SH_EXITMASK);
 125         /* return outside of function, dotscript and profile is exit */
 126         if(sh.fn_depth==0 && sh.dot_depth==0 && !sh_isstate(SH_PROFILE))
 127                 pp->mode = SH_JMPEXIT;
 128         sh_exit(n);
 129         return(1);
 130 }
 131
 132
 133 /*
 134  * break and continue
 135  */
 136 int     b_brk_cont __PARAM__((register int n, register char *argv[],__V_ *extra), (n, argv, extra)) __OTORP__(register int n; register char *argv[];__V_ *extra;){
 137         char *arg;
 138         register int cont= **argv=='c';
 139         NOT_USED(extra);
 140         while((n = optget(argv,sh_optcflow))) switch(n)
 141         {
 142             case ':':
 143                 error(2, opt_arg);
 144                 break;
 145             case '?':
 146                 error(ERROR_usage(0), opt_arg);
 147                 return(2);
 148         }
 149         if(error_info.errors)
 150                 error(ERROR_usage(2),optusage((char*)0));
 151         argv += opt_index;
 152         n=1;
 153         if(arg= *argv)
 154         {
 155                 n = strtol(arg,&arg,10);
 156                 if(n<=0 || *arg)
 157                         error(ERROR_exit(1),e_nolabels,*argv);
 158         }
 159         if(sh.st.loopcnt)
 160         {
 161                 sh.st.execbrk = sh.st.breakcnt = n;
 162                 if(sh.st.breakcnt > sh.st.loopcnt)
 163                         sh.st.breakcnt = sh.st.loopcnt;
 164                 if(cont)
 165                         sh.st.breakcnt = -sh.st.breakcnt;
 166         }
 167         return(0);
 168 }
 169