From 0f7544cfca63fc5b49790974e6b01097365bb18c Mon Sep 17 00:00:00 2001
From: jean-dao <1405645+jean-dao@users.noreply.github.com>
Date: Sun, 10 Sep 2017 17:10:55 +0200
Subject: [PATCH] std.io.InStream: add readLine function (#458)

---
 std/io.zig | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/std/io.zig b/std/io.zig
index 2f0305b43f..1054e002f0 100644
--- a/std/io.zig
+++ b/std/io.zig
@@ -419,6 +419,19 @@ pub const InStream = struct {
         }
     }
 
+    pub fn readLine(is: &InStream, buf: &Buffer) -> %void {
+        %return buf.resize(0);
+
+        while (true) {
+            var byte: u8 = %return is.readByte();
+            %return buf.appendByte(byte);
+
+            if (buf.endsWith(os.line_sep)) {
+                break;
+            }
+        }
+    }
+
     pub fn isTty(self: &InStream) -> %bool {
         if (is_posix) {
             if (builtin.link_libc) {