From 9d01c46c07c2418ae5c26f03785c350185b17ed0 Mon Sep 17 00:00:00 2001
From: Erick Tryzelaar <erick.tryzelaar@gmail.com>
Date: Tue, 1 May 2012 08:14:56 -0700
Subject: [PATCH] core: Add iterable functions to io::reader_utils.

---
 src/libcore/io.rs | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/libcore/io.rs b/src/libcore/io.rs
index beac1e5fb09..e210ab0944c 100644
--- a/src/libcore/io.rs
+++ b/src/libcore/io.rs
@@ -161,6 +161,24 @@ impl reader_util for reader {
         while !self.eof() { buf += self.read_bytes(2048u); }
         buf
     }
+
+    fn each_byte(it: fn(int) -> bool) {
+        while !self.eof() {
+            if !it(self.read_byte()) { break; }
+        }
+    }
+
+    fn each_char(it: fn(char) -> bool) {
+        while !self.eof() {
+            if !it(self.read_char()) { break; }
+        }
+    }
+
+    fn each_line(it: fn(str) -> bool) {
+        while !self.eof() {
+            if !it(self.read_line()) { break; }
+        }
+    }
 }
 
 // Reader implementations