1 files changed, 27 insertions, 0 deletions
diff --git a/src/libstddjb/skagetln.c b/src/libstddjb/skagetln.c
new file mode 100644
index 0000000..056cc38
--- /dev/null
+++ b/src/libstddjb/skagetln.c
@@ -0,0 +1,27 @@
+/* ISC license. */
+
+#include <errno.h>
+#include <skalibs/buffer.h>
+#include <skalibs/siovec.h>
+#include <skalibs/stralloc.h>
+#include <skalibs/skamisc.h>
+
+int skagetln (buffer *b, stralloc *sa, char sep)
+{
+  unsigned int start = sa->len ;
+  for (;;)
+  {
+    siovec_t v[2] ;
+    unsigned int pos ;
+    int r ;
+    buffer_rpeek(b, v) ;
+    pos = siovec_bytechr(v, 2, sep) ;
+    r = pos < buffer_len(b) ; pos += r ;
+    if (!stralloc_readyplus(sa, pos)) return -1 ;
+    buffer_getnofill(b, sa->s + sa->len, pos) ; sa->len += pos ;
+    if (r) return 1 ;
+    r = buffer_fill(b) ;
+    if (r < 0) return r ;
+    if (!r) return (sa->s && (sa->len > start)) ? (errno = EPIPE, -1) : 0 ;
+  }
+}