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

   1
   2 /*
   3  * seq_add.c -- add message(s) to a sequence
   4  *
   5  * $Id$
   6  *
   7  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   8  * COPYRIGHT file in the root directory of the nmh distribution for
   9  * complete copyright information.
  10  */
  11
  12 #include <h/mh.h>
  13
  14
  15 /*
  16  * Add all the SELECTED messages to a (possibly new) sequence.
  17  *
  18  * If public ==  1, make sequence public.
  19  * If public ==  0, make sequence private.
  20  * If public == -1, leave the public/private bit alone for existing
  21  *                  sequences.  For new sequences, set this bit based
  22  *                  on its readonly status.
  23  *
  24  * If error, return 0, else return 1.
  25  */
  26
  27 int
  28 seq_addsel (struct msgs *mp, char *cp, int public, int zero)
  29 {
  30     int i, msgnum, new_seq = 1;
  31
  32     if (!seq_nameok (cp))
  33         return 0;
  34
  35     /*
  36      * We keep mp->curmsg and "cur" sequence in sync.
  37      * See seq_list() and seq_init().
  38      */
  39     if (!strcmp (current,cp))
  40         mp->curmsg = mp->hghsel;
  41
  42     /*
  43      * Get the number for this sequence
  44      */
  45     for (i = 0; mp->msgattrs[i]; i++) {
  46         if (!strcmp (mp->msgattrs[i], cp)) {
  47             new_seq = 0;
  48             break;
  49         }
  50     }
  51
  52     /*
  53      * If this is a new sequence, add a slot for it
  54      */
  55     if (new_seq) {
  56         if (i >= NUMATTRS) {
  57             advise (NULL, "only %d sequences allowed (no room for %s)!", NUMATTRS, cp);
  58             return 0;
  59         }
  60         if (!(mp->msgattrs[i] = strdup (cp))) {
  61             advise (NULL, "strdup failed");
  62             return 0;
  63         }
  64         mp->msgattrs[i + 1] = NULL;
  65     }
  66
  67     /*
  68      * If sequence is new, or zero flag is set, then first
  69      * clear the bit for this sequence from all messages.
  70      */
  71     if (new_seq || zero) {
  72         for (msgnum = mp->lowmsg; msgnum <= mp->hghmsg; msgnum++)
  73             clear_sequence (mp, i, msgnum);
  74     }
  75
  76     /*
  77      * Now flip on the bit for this sequence
  78      * for all selected messages.
  79      */
  80     for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++)
  81         if (is_selected (mp, msgnum))
  82             add_sequence (mp, i, msgnum);
  83
  84     /*
  85      * Set the public/private bit for this sequence.
  86      */
  87     if (public == 1)
  88         make_seq_public (mp, i);
  89     else if (public == 0)
  90         make_seq_private (mp, i);
  91     else if (new_seq) {
  92         /*
  93          * If public == -1, then only set the
  94          * public/private bit for new sequences.
  95          */
  96         if (is_readonly (mp))
  97             make_seq_private (mp, i);
  98         else
  99             make_seq_public (mp, i);
 100     }
 101
 102     mp->msgflags |= SEQMOD;
 103     return 1;
 104 }
 105
 106
 107 /*
 108  * Add a message to a (possibly new) sequence.
 109  *
 110  * If public ==  1, make sequence public.
 111  * If public ==  0, make sequence private.
 112  * If public == -1, leave the public/private bit alone for existing
 113  *                  sequences.  For new sequences, set this bit based
 114  *                  on its readonly status.
 115  *
 116  * If error, return 0, else return 1.
 117  */
 118
 119 int
 120 seq_addmsg (struct msgs *mp, char *cp, int msgnum, int public, int zero)
 121 {
 122     int i, j, new_seq = 1;
 123
 124     if (!seq_nameok (cp))
 125         return 0;
 126
 127     /*
 128      * keep mp->curmsg and msgattrs["cur"] in sync - see seq_list()
 129      */
 130     if (!strcmp (current,cp))
 131         mp->curmsg = msgnum;
 132
 133     /*
 134      * Get the number for this sequence
 135      */
 136     for (i = 0; mp->msgattrs[i]; i++) {
 137         if (!strcmp (mp->msgattrs[i], cp)) {
 138             new_seq = 0;
 139             break;
 140         }
 141     }
 142
 143     /*
 144      * If this is a new sequence, add a slot for it
 145      */
 146     if (new_seq) {
 147         if (i >= NUMATTRS) {
 148             advise (NULL, "only %d sequences allowed (no room for %s)!", NUMATTRS, cp);
 149             return 0;
 150         }
 151         if (!(mp->msgattrs[i] = strdup (cp))) {
 152             advise (NULL, "strdup failed");
 153             return 0;
 154         }
 155         mp->msgattrs[i + 1] = NULL;
 156     }
 157
 158     /*
 159      * If sequence is new, or zero flag is set, then first
 160      * clear the bit for this sequence from all messages.
 161      */
 162     if (new_seq || zero) {
 163         for (j = mp->lowmsg; j <= mp->hghmsg; j++)
 164             clear_sequence (mp, i, j);
 165     }
 166
 167     /*
 168      * Now flip on the bit for this sequence
 169      * for this particular message.
 170      */
 171     add_sequence (mp, i, msgnum);
 172
 173     /*
 174      * Set the public/private bit for this sequence.
 175      */
 176     if (public == 1)
 177         make_seq_public (mp, i);
 178     else if (public == 0)
 179         make_seq_private (mp, i);
 180     else if (new_seq) {
 181         /*
 182          * If public == -1, then only set the
 183          * public/private bit for new sequences.
 184          */
 185         if (is_readonly (mp))
 186             make_seq_private (mp, i);
 187         else
 188             make_seq_public (mp, i);
 189     }
 190
 191     mp->msgflags |= SEQMOD;
 192     return 1;
 193 }