1 files changed, 19 insertions, 0 deletions
diff --git a/src/libstddjb/netstring_append.c b/src/libstddjb/netstring_append.c
new file mode 100644
index 0000000..9c14f49
--- /dev/null
+++ b/src/libstddjb/netstring_append.c
@@ -0,0 +1,19 @@
+/* ISC license. */
+
+#include <skalibs/uint.h>
+#include <skalibs/bytestr.h>
+#include <skalibs/stralloc.h>
+#include <skalibs/netstring.h>
+
+int netstring_appendb (stralloc *sa, char const *s, unsigned int len)
+{
+  char fmt[UINT_FMT] ;
+  unsigned int n = uint_fmt(fmt, len) ;
+  if (!stralloc_readyplus(sa, len + n + 2)) return 0 ;
+  fmt[n] = ':' ;
+  byte_copy(sa->s + sa->len, n+1, fmt) ;
+  byte_copy(sa->s + sa->len + n+1, len, s) ;
+  sa->s[sa->len + n+1 + len] = ',' ;
+  sa->len += n + 2 + len ;
+  return 1 ;
+}