# 2.11BSD#431 - /usr/src/lib/libc/stdlib/getsubopt.c

##### Functions

    getsubopt         X

##### Variables

    suboptarg         X

       1: /*-
       2:  * Copyright (c) 1990, 1993
       3:  *	The Regents of the University of California.  All rights reserved.
       4:  *
       5:  * Redistribution and use in source and binary forms, with or without
       6:  * modification, are permitted provided that the following conditions
       7:  * are met:
       8:  * 1. Redistributions of source code must retain the above copyright
       9:  *    notice, this list of conditions and the following disclaimer.
      10:  * 2. Redistributions in binary form must reproduce the above copyright
      11:  *    notice, this list of conditions and the following disclaimer in the
      12:  *    documentation and/or other materials provided with the distribution.
      13:  * 3. All advertising materials mentioning features or use of this software
      14:  *    must display the following acknowledgement:
      15:  *	This product includes software developed by the University of
      16:  *	California, Berkeley and its contributors.
      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:
      34: #if defined(DOSCCS) && !defined(lint)
      35: static char sccsid[] = "@(#)getsubopt.c	8.1.1 (2.11BSD) 1996/1/11";
      36: #endif /* not lint */
      37:
      38: #include <stdlib.h>
      39:
      40: /*
      41:  * The SVID interface to getsubopt provides no way of figuring out which
      42:  * part of the suboptions list wasn't matched.  This makes error messages
      43:  * tricky...  The extern variable suboptarg is a pointer to the token
      44:  * which didn't match.
      45:  */
      46: char *suboptarg;
      47:
      48: getsubopt(optionp, tokens, valuep)
      49:     register char **optionp, **valuep;
      50:     register char **tokens;
      51: {
      52:     register int cnt;
      53:     register char *p;
      54:
      55:     suboptarg = *valuep = NULL;
      56:
      57:     if (!optionp || !*optionp)
      58:         return(-1);
      59:
      60:     /* skip leading white-space, commas */
      61:     for (p = *optionp; *p && (*p == ',' || *p == ' ' || *p == '\t'); ++p);
      62:
      63:     if (!*p) {
      64:         *optionp = p;
      65:         return(-1);
      66:     }
      67:
      68:     /* save the start of the token, and skip the rest of the token. */
      69:     for (suboptarg = p;
      70:         *++p && *p != ',' && *p != '=' && *p != ' ' && *p != '\t';);
      71:
      72:     if (*p) {
      73:         /*
      74: 		 * If there's an equals sign, set the value pointer, and
      75: 		 * skip over the value part of the token.  Terminate the
      76: 		 * token.
      77: 		 */
      78:         if (*p == '=') {
      79:             *p = '\0';
      80:             for (*valuep = ++p;
      81:                 *p && *p != ',' && *p != ' ' && *p != '\t'; ++p);
      82:             if (*p)
      83:                 *p++ = '\0';
      84:         } else
      85:             *p++ = '\0';
      86:         /* Skip any whitespace or commas after this token. */
      87:         for (; *p && (*p == ',' || *p == ' ' || *p == '\t'); ++p);
      88:     }
      89:
      90:     /* set optionp for next round. */
      91:     *optionp = p;
      92:
      93:     for (cnt = 0; *tokens; ++tokens, ++cnt)
      94:         if (!strcmp(suboptarg, *tokens))
      95:             return(cnt);
      96:     return(-1);
      97: }

#### Defined functions

getsubopt defined in line 48; used 1 times

- in /usr/include/stdlib.h line 103

#### Defined variables

sccsid defined in line 35; never used
suboptarg defined in line 46; used 6 times

- in line 55, 69, 94
- in /usr/src/lib/libc/stdlib/getsubopt.c line 55, 69, 94

Last modified: 1996-01-12 Generated: 2016-12-26 | Generated by src2html V0.67 page hit count: 909 |