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