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