usr/src/cmd/mail/pickFrom.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  23 /*        All Rights Reserved   */
  24
  25
  26 #pragma ident   "%Z%%M% %I%     %E% SMI"        /* SVr4.0 2.    */
  27 #include "mail.h"
  28 /*
  29  * pickFrom (line) - scans line, ASSUMED TO BE of the form
  30  *      [>]From <fromU> <date> [remote from <fromS>]
  31  * and fills fromU and fromS global strings appropriately.
  32  */
  33
  34 void pickFrom (lineptr)
  35 register char *lineptr;
  36 {
  37         register char *p;
  38         static char rf[] = "remote from ";
  39         int rfl;
  40
  41         if (*lineptr == '>')
  42                 lineptr++;
  43         lineptr += 5;
  44         for (p = fromU; *lineptr; lineptr++) {
  45                 if (isspace (*lineptr))
  46                         break;
  47                 *p++ = *lineptr;
  48         }
  49         *p = '\0';
  50         rfl = strlen (rf);
  51         while (*lineptr && strncmp (lineptr, rf, rfl))
  52                 lineptr++;
  53         if (*lineptr == '\0') {
  54                 fromS[0] = 0;
  55         } else {
  56                 lineptr += rfl;
  57                 for (p = fromS; *lineptr; lineptr++) {
  58                         if (isspace (*lineptr))
  59                                 break;
  60                         *p++ = *lineptr;
  61                 }
  62                 *p = '\0';
  63         }
  64 }