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

   1
   2 /*
   3  * seq_bits.c -- return the snprintb() string for a sequence
   4  *
   5  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   6  * COPYRIGHT file in the root directory of the nmh distribution for
   7  * complete copyright information.
   8  */
   9
  10 #include <h/mh.h>
  11
  12
  13 char *
  14 seq_bits (struct msgs *mp)
  15 {
  16     size_t i;
  17     size_t len;
  18     static char buffer[BUFSIZ];
  19
  20     strncpy (buffer, MBITS, sizeof(buffer));
  21
  22     for (i = 0; i < svector_size (mp->msgattrs); i++) {
  23         len = strlen (buffer);
  24         snprintf (buffer + len, sizeof(buffer) - len,
  25                   "%c%s", FFATTRSLOT + 1 + (int) i,
  26                   svector_at (mp->msgattrs, i));
  27         /*
  28          * seq_bits() is used by seq_printdebug(), which passes an
  29          * unsigned int bit vector to snprintb().  So limit the
  30          * size of the return value accordingly.   Even worse,
  31          * snprintb() only uses characters up through ASCII space
  32          * as the delimiter (the %c character above).  So limit
  33          * based on that.
  34          */
  35         if ((int) i == ' ' - FFATTRSLOT - 1) break;
  36     }
  37
  38     return buffer;
  39 }