diplodocus.org Git - nmh/blob - sbr/seq_del.c

   1
   2 /*
   3  * seq_del.c -- delete message(s) from a sequence
   4  *
   5  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   6  * COPYRIGHT file in the root directory of the nmh distribution for
   7  * complete copyright information.
   8  */
   9
  10 #include <h/mh.h>
  11
  12
  13 /*
  14  * Delete all SELECTED messages from sequence
  15  *
  16  * If public ==  1, make sequence public.
  17  * If public ==  0, make sequence private.
  18  * If public == -1, leave the public/private bit alone for existing
  19  *                  sequences.  For new sequences, set this bit based
  20  *                  on its readonly status.
  21  *
  22  * If error, return 0, else return 1.
  23  */
  24
  25 int
  26 seq_delsel (struct msgs *mp, char *cp, int public, int zero)
  27 {
  28     unsigned int i;
  29     int msgnum, new_seq = 1;
  30
  31     if (!seq_nameok (cp))
  32         return 0;
  33
  34     /*
  35      * Get the number for this sequence
  36      */
  37     for (i = 0; mp->msgattrs[i]; i++) {
  38         if (!strcmp (mp->msgattrs[i], cp)) {
  39             new_seq = 0;
  40             break;
  41         }
  42     }
  43
  44     /*
  45      * If the zero flag is set, first add all existing
  46      * messages in this folder to the sequence.
  47      */
  48     if (zero) {
  49         /*
  50          * create the sequence, if necessary
  51          */
  52         if (new_seq) {
  53             if (i >= NUMATTRS) {
  54                 advise (NULL, "only %d sequences allowed (no room for %s)!", NUMATTRS, cp);
  55                 return 0;
  56             }
  57             if (!(mp->msgattrs[i] = strdup (cp))) {
  58                 advise (NULL, "strdup failed");
  59                 return 0;
  60             }
  61             mp->msgattrs[i + 1] = NULL;
  62         }
  63         /*
  64          * now add sequence bit to all existing messages
  65          */
  66         for (msgnum = mp->lowmsg; msgnum <= mp->hghmsg; msgnum++) {
  67             if (does_exist (mp, msgnum))
  68                 add_sequence (mp, i, msgnum);
  69             else
  70                 clear_sequence (mp, i, msgnum);
  71         }
  72     } else {
  73         if (new_seq) {
  74             advise (NULL, "no such sequence as %s", cp);
  75             return 0;
  76         }
  77     }
  78
  79     /*
  80      * Now clear the bit on all selected messages
  81      */
  82     for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
  83         if (is_selected (mp, msgnum))
  84             clear_sequence (mp, i, msgnum);
  85
  86     if (! strcmp (cp, current)  &&
  87         mp->lowsel <= mp->curmsg  &&  mp->curmsg <= mp->hghsel) {
  88         /* Removed current message indication, so reset curmsg. */
  89         mp->curmsg = 0;
  90     }
  91
  92     /*
  93      * Set the public/private bit for this sequence.
  94      */
  95     if (public == 1)
  96         make_seq_public (mp, i);
  97     else if (public == 0)
  98         make_seq_private (mp, i);
  99     else if (new_seq) {
 100         /*
 101          * If public == -1, then only set the
 102          * public/private bit for new sequences.
 103          */
 104         if (is_readonly (mp))
 105             make_seq_private (mp, i);
 106         else
 107             make_seq_public (mp, i);
 108     }
 109
 110     mp->msgflags |= SEQMOD;
 111     return 1;
 112 }
 113
 114
 115 /*
 116  * Delete message from sequence.
 117  *
 118  * If error, return 0, else return 1.
 119  */
 120
 121 int
 122 seq_delmsg (struct msgs *mp, char *cp, int msgnum)
 123 {
 124     int i;
 125
 126     if (!seq_nameok (cp))
 127         return 0;
 128
 129     for (i = 0; mp->msgattrs[i]; i++) {
 130         if (!strcmp (mp->msgattrs[i], cp)) {
 131             clear_sequence (mp, i, msgnum);
 132             mp->msgflags |= SEQMOD;
 133             return 1;
 134         }
 135     }
 136
 137     advise (NULL, "no such sequence as %s", cp);
 138     return 0;
 139 }