From 4fbf50ddfeeb0e9d99d271e31dd35d545fb42ab6 Mon Sep 17 00:00:00 2001
From: Nicholas Noll <nbnoll@eml.cc>
Date: Tue, 21 Apr 2020 10:40:03 -0700
Subject: feat: added wrapper for io

---
 sys/libn/bufio.c | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 sys/libn/bufio.c

(limited to 'sys/libn/bufio.c')

diff --git a/sys/libn/bufio.c b/sys/libn/bufio.c
new file mode 100644
index 0000000..6b15760
--- /dev/null
+++ b/sys/libn/bufio.c
@@ -0,0 +1,33 @@
+#include <u.h>
+#include <libn.h>
+
+enum
+{
+    BUF·size   = 8 * 2048,
+    BUF·ungets = 8,
+
+    BUF·bad = -2,
+    BUF·eof = -1,
+
+    BUF·inactive = 0,
+    BUF·rdractive,
+    BUF·wtractive,
+
+    BUF·END,
+} bmode;
+
+typedef struct Buffer
+{
+    uint8 state;
+    vlong off;
+    vlong size;
+
+    byte *bbuf, *ebuf;
+    byte  b[BUF·size + BUF·ungets];
+} Buffer;
+
+struct bufio·Stream
+{
+    Stream    *s;
+    Buffer    buf;
+};
-- 
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