skalibs

Mirror/fork of https://skarnet.org/software/skalibs/
git clone https://ccx.te2000.cz/git/skalibs
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textmessage_putv.c (617B)

      1 /* ISC license. */
      2 
      3 #include <sys/uio.h>
      4 #include <errno.h>
      5 #include <stdint.h>
      6 #include <skalibs/uint32.h>
      7 #include <skalibs/bufalloc.h>
      8 #include <skalibs/siovec.h>
      9 #include <skalibs/textmessage.h>
     10 
     11 int textmessage_putv (textmessage_sender *ts, struct iovec const *v, unsigned int n)
     12 {
     13   size_t len = siovec_len(v, n) ;
     14   char pack[4] ;
     15   struct iovec vv[n+1] ;
     16   if (len > TEXTMESSAGE_MAXLEN) return (errno = EINVAL, 0) ;
     17   vv[0].iov_base = pack ;
     18   vv[0].iov_len = 4 ;
     19   for (unsigned int i = 0 ; i < n ; i++) vv[i+1] = v[i] ;
     20   uint32_pack_big(pack, (uint32_t)len) ;
     21   return bufalloc_putv(&ts->out, vv, n+1) ;
     22 }