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

   1 /* seq_bits.c -- return the snprintb() string for 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_bits.h"
  10
  11
  12 char *
  13 seq_bits (struct msgs *mp)
  14 {
  15     size_t i;
  16     size_t len;
  17     static char buffer[BUFSIZ];
  18
  19     strncpy (buffer, MBITS, sizeof(buffer));
  20
  21     for (i = 0; i < svector_size (mp->msgattrs); i++) {
  22         len = strlen (buffer);
  23         snprintf (buffer + len, sizeof(buffer) - len,
  24                   "%c%s", FFATTRSLOT + 1 + (int) i,
  25                   svector_at (mp->msgattrs, i));
  26         /*
  27          * seq_bits() is used by seq_printdebug(), which passes an
  28          * unsigned int bit vector to snprintb().  So limit the
  29          * size of the return value accordingly.   Even worse,
  30          * snprintb() only uses characters up through ASCII space
  31          * as the delimiter (the %c character above).  So limit
  32          * based on that.
  33          */
  34         if ((int) i == ' ' - FFATTRSLOT - 1) break;
  35     }
  36
  37     return buffer;
  38 }