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; i < svector_size (mp->msgattrs); i++) {
  38         if (!strcmp (svector_at (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 (!(svector_push_back (mp->msgattrs, strdup (cp)))) {
  54                 advise (NULL, "strdup failed");
  55                 return 0;
  56             }
  57         }
  58         /*
  59          * now add sequence bit to all existing messages
  60          */
  61         for (msgnum = mp->lowmsg; msgnum <= mp->hghmsg; msgnum++) {
  62             if (does_exist (mp, msgnum))
  63                 add_sequence (mp, i, msgnum);
  64             else
  65                 clear_sequence (mp, i, msgnum);
  66         }
  67     } else {
  68         if (new_seq) {
  69             advise (NULL, "no such sequence as %s", cp);
  70             return 0;
  71         }
  72     }
  73
  74     /*
  75      * Now clear the bit on all selected messages
  76      */
  77     for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
  78         if (is_selected (mp, msgnum))
  79             clear_sequence (mp, i, msgnum);
  80
  81     if (! strcmp (cp, current)  &&
  82         mp->lowsel <= mp->curmsg  &&  mp->curmsg <= mp->hghsel) {
  83         /* Removed current message indication, so reset curmsg. */
  84         mp->curmsg = 0;
  85     }
  86
  87     /*
  88      * Set the public/private bit for this sequence.
  89      */
  90     if (public == 1)
  91         make_seq_public (mp, i);
  92     else if (public == 0)
  93         make_seq_private (mp, i);
  94     else if (new_seq) {
  95         /*
  96          * If public == -1, then only set the
  97          * public/private bit for new sequences.
  98          */
  99         if (is_readonly (mp))
 100             make_seq_private (mp, i);
 101         else
 102             make_seq_public (mp, i);
 103     }
 104
 105     mp->msgflags |= SEQMOD;
 106     return 1;
 107 }
 108
 109
 110 /*
 111  * Delete message from sequence.
 112  *
 113  * If error, return 0, else return 1.
 114  */
 115
 116 int
 117 seq_delmsg (struct msgs *mp, char *cp, int msgnum)
 118 {
 119     size_t i;
 120
 121     if (!seq_nameok (cp))
 122         return 0;
 123
 124     for (i = 0; i < svector_size (mp->msgattrs); i++) {
 125         if (!strcmp (svector_at (mp->msgattrs, i), cp)) {
 126             clear_sequence (mp, i, msgnum);
 127             mp->msgflags |= SEQMOD;
 128             return 1;
 129         }
 130     }
 131
 132     advise (NULL, "no such sequence as %s", cp);
 133     return 0;
 134 }