usr/src/cmd/mail/printhdr.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 /*
  23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  28 /*        All Rights Reserved   */
  29
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31
  32 #include "mail.h"
  33
  34 int
  35 printhdr(int type, int hdrtype, struct hdrs *hptr, FILE *fp)
  36 {
  37         char            buf[1024];
  38         int             n;
  39         struct hdrs     *contptr;
  40
  41
  42         if (hptr == NULL)
  43                 return (0);
  44         if (sel_disp(type, hdrtype, header[hdrtype].tag) < 0) {
  45                 return (0);
  46         }
  47
  48         (void) snprintf(buf, sizeof (buf), "%s %s\n",
  49             header[hdrtype].tag, hptr->value);
  50         n = strlen(buf);
  51         if (fwrite(buf, 1, n, fp) != n)  {
  52                 sav_errno = errno;
  53                 return (-1);
  54         }
  55
  56         /* Print continuation lines, if any... */
  57         contptr = hptr;
  58         while (contptr->cont != NULL) {
  59                 contptr = contptr->cont;
  60                 (void) snprintf(buf, sizeof (buf), "%s\n", contptr->value);
  61                 n = strlen(buf);
  62                 if (fwrite(buf, 1, n, fp) != n)  {
  63                         sav_errno = errno;
  64                         return (-1);
  65                 }
  66         }
  67         return (0);
  68 }