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     int i, msgnum, new_seq = 1;
  29
  30     if (!seq_nameok (cp))
  31         return 0;
  32
  33     /*
  34      * Get the number for this sequence
  35      */
  36     for (i = 0; mp->msgattrs[i]; i++) {
  37         if (!strcmp (mp->msgattrs[i], cp)) {
  38             new_seq = 0;
  39             break;
  40         }
  41     }
  42
  43     /*
  44      * If the zero flag is set, first add all existing
  45      * messages in this folder to the sequence.
  46      */
  47     if (zero) {
  48         /*
  49          * create the sequence, if necessary
  50          */
  51         if (new_seq) {
  52             if (i >= NUMATTRS) {
  53                 advise (NULL, "only %d sequences allowed (no room for %s)!", NUMATTRS, cp);
  54                 return 0;
  55             }
  56             if (!(mp->msgattrs[i] = strdup (cp))) {
  57                 advise (NULL, "strdup failed");
  58                 return 0;
  59             }
  60             mp->msgattrs[i + 1] = NULL;
  61         }
  62         /*
  63          * now add sequence bit to all existing messages
  64          */
  65         for (msgnum = mp->lowmsg; msgnum <= mp->hghmsg; msgnum++) {
  66             if (does_exist (mp, msgnum))
  67                 add_sequence (mp, i, msgnum);
  68             else
  69                 clear_sequence (mp, i, msgnum);
  70         }
  71     } else {
  72         if (new_seq) {
  73             advise (NULL, "no such sequence as %s", cp);
  74             return 0;
  75         }
  76     }
  77
  78     /*
  79      * Now clear the bit on all selected messages
  80      */
  81     for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
  82         if (is_selected (mp, msgnum))
  83             clear_sequence (mp, i, msgnum);
  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     int i;
 118
 119     if (!seq_nameok (cp))
 120         return 0;
 121
 122     for (i = 0; mp->msgattrs[i]; i++) {
 123         if (!strcmp (mp->msgattrs[i], cp)) {
 124             clear_sequence (mp, i, msgnum);
 125             mp->msgflags |= SEQMOD;
 126             return 1;
 127         }
 128     }
 129
 130     advise (NULL, "no such sequence as %s", cp);
 131     return 0;
 132 }