diplodocus.org Git - nmh/blob - docs/historical/mh-6.8.5/sbr/m_seq.c

   1 /* m_seq.c - print out a message sequence */
   2 #ifndef lint
   3 static char ident[] = "@(#)$Id: m_seq.c,v 1.8 1992/12/15 00:20:22 jromine Exp $";
   4 #endif  /* lint */
   5
   6 #include "../h/mh.h"
   7 #include <stdio.h>
   8
   9 /* new version from VJ 2/90 - faster? */
  10
  11 char *
  12 m_seq(mp, cp)
  13         struct msgs *mp;
  14         char *cp;
  15 {
  16         int mask;
  17         register int i, j;
  18         register char *bp;
  19         static char buffer[BUFSIZ*2];   /* for big sequences */
  20
  21         if (strcmp (current, cp) == 0) {
  22             /* assume this is in sync with msgstats["cur"] */
  23             /* see m_seqadd() for details */
  24             if (mp->curmsg) {
  25                 (void) sprintf(buffer, "%s", m_name(mp->curmsg));
  26                 return (buffer);
  27             } else
  28                 return (NULL);
  29         }
  30         for (i = 0; mp->msgattrs[i]; i++)
  31                 if (strcmp(mp->msgattrs[i], cp) == 0)
  32                         break;
  33
  34         if (! mp->msgattrs[i])
  35                 return (NULL);
  36
  37         mask = EXISTS | (1 << (FFATTRSLOT + i));
  38         bp = buffer;
  39         for (i = mp->lowmsg; i <= mp->hghmsg; ++i) {
  40                 if ((mp->msgstats[i] & mask) != mask)
  41                         continue;
  42
  43                 if (bp > buffer)
  44                         *bp++ = ' ';
  45
  46                 (void) sprintf(bp, "%s", m_name(i));
  47                 bp += strlen(bp);
  48                 j = i;
  49                 for (++i; i <= mp->hghmsg && (mp->msgstats[i] & mask) == mask;
  50                      ++i)
  51                         ;
  52                 if (i - j > 1) {
  53                         (void) sprintf(bp, "-%s", m_name(i - 1));
  54                         bp += strlen(bp);
  55                 }
  56         }
  57         return (bp > buffer? buffer : NULL);
  58 }