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/* ISC license. */
#include <sys/types.h>
#include <errno.h>
#include <skalibs/uint64.h>
#include <skalibs/buffer.h>
#include <skalibs/netstring.h>
int netstring_put (buffer *b, char const *s, size_t len, size_t *written)
{
char fmt[UINT64_FMT] ;
size_t n = uint64_fmt(fmt, len) ;
if (*written > len + n + 2) return (errno = EINVAL, 0) ;
fmt[n] = ':' ;
if (*written < n + 1)
{
size_t w = *written ;
ssize_t r = buffer_putall(b, fmt, n+1, &w) ;
if (r < 0) return (*written = w, 0) ;
*written = n+1 ;
}
if (*written < n+1 + len)
{
size_t w = *written - (n+1) ;
ssize_t r = buffer_putall(b, s, len, &w) ;
*written = w + (n+1) ;
if (r < 0) return (*written = n+1 + w, 0) ;
*written = n+1 + len ;
}
{
size_t w = 0 ;
ssize_t r = buffer_putall(b, ",", 1, &w) ;
if (r < 0) return 0 ;
}
*written = 0 ;
return 1 ;
}
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