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

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