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 #include "seq_nameok.h"
  10 #include "error.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;
  30
  31     if (!seq_nameok (cp))
  32         return 0;
  33
  34     /*
  35      * Get the number for this sequence
  36      */
  37     bool new_seq = true;
  38     for (i = 0; i < svector_size (mp->msgattrs); i++) {
  39         if (!strcmp (svector_at (mp->msgattrs, i), cp)) {
  40             new_seq = false;
  41             break;
  42         }
  43     }
  44
  45     /*
  46      * If the zero flag is set, first add all existing
  47      * messages in this folder to the sequence.
  48      */
  49     if (zero) {
  50         /*
  51          * create the sequence, if necessary
  52          */
  53         if (new_seq) {
  54             if (!(svector_push_back (mp->msgattrs, strdup (cp)))) {
  55                 inform("strdup failed");
  56                 return 0;
  57             }
  58         }
  59         /*
  60          * now add sequence bit to all existing messages
  61          */
  62         for (msgnum = mp->lowmsg; msgnum <= mp->hghmsg; msgnum++) {
  63             if (does_exist (mp, msgnum))
  64                 add_sequence (mp, i, msgnum);
  65             else
  66                 clear_sequence (mp, i, msgnum);
  67         }
  68     } else {
  69         if (new_seq) {
  70             inform("no such sequence as %s", cp);
  71             return 0;
  72         }
  73     }
  74
  75     /*
  76      * Now clear the bit on all selected messages
  77      */
  78     for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
  79         if (is_selected (mp, msgnum))
  80             clear_sequence (mp, i, msgnum);
  81
  82     if (! strcmp (cp, current)  &&
  83         mp->lowsel <= mp->curmsg  &&  mp->curmsg <= mp->hghsel) {
  84         /* Removed current message indication, so reset curmsg. */
  85         mp->curmsg = 0;
  86     }
  87
  88     /*
  89      * Set the public/private bit for this sequence.
  90      */
  91     if (public == 1)
  92         make_seq_public (mp, i);
  93     else if (public == 0)
  94         make_seq_private (mp, i);
  95     else if (new_seq) {
  96         /*
  97          * If public == -1, then only set the
  98          * public/private bit for new sequences.
  99          */
 100         if (is_readonly (mp))
 101             make_seq_private (mp, i);
 102         else
 103             make_seq_public (mp, i);
 104     }
 105
 106     mp->msgflags |= SEQMOD;
 107     return 1;
 108 }
 109
 110
 111 /*
 112  * Delete message from sequence.
 113  *
 114  * If error, return 0, else return 1.
 115  */
 116
 117 int
 118 seq_delmsg (struct msgs *mp, char *cp, int msgnum)
 119 {
 120     size_t i;
 121
 122     if (!seq_nameok (cp))
 123         return 0;
 124
 125     for (i = 0; i < svector_size (mp->msgattrs); i++) {
 126         if (!strcmp (svector_at (mp->msgattrs, i), cp)) {
 127             clear_sequence (mp, i, msgnum);
 128             mp->msgflags |= SEQMOD;
 129             return 1;
 130         }
 131     }
 132
 133     inform("no such sequence as %s", cp);
 134     return 0;
 135 }