From 718c0b5963e6513337e4fee003b34423397c2d14 Mon Sep 17 00:00:00 2001
From: Roy Frostig <rfrostig@mozilla.com>
Date: Wed, 4 Aug 2010 23:09:25 -0700
Subject: Add to std._io some formatter/type-specific-writer mechanism.  Make a
 few type-specific buffered writers as wrappers of buf_writer.

---
 src/lib/_str.rs | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'src/lib/_str.rs')

diff --git a/src/lib/_str.rs b/src/lib/_str.rs
index 062d8bf1..8eed9a38 100644
--- a/src/lib/_str.rs
+++ b/src/lib/_str.rs
@@ -12,6 +12,18 @@ fn is_utf8(vec[u8] v) -> bool {
   fail; // FIXME
 }
 
+fn is_ascii(str s) -> bool {
+  let uint i = len(s);
+  while (i > 0u) {
+    i -= 1u;
+    // FIXME (issue #94)
+    if ((s.(i as int) & 0x80u8) != 0u8) {
+      ret false;
+    }
+  }
+  ret true;
+}
+
 fn alloc(uint n_bytes) -> str {
   ret rustrt.str_alloc(n_bytes);
 }
@@ -23,3 +35,10 @@ fn len(str s) -> uint {
 fn buf(str s) -> sbuf {
   ret rustrt.str_buf(s);
 }
+
+fn bytes(&str s) -> vec[u8] {
+  fn ith(str s, uint i) -> u8 {
+    ret s.(i as int); // FIXME (issue #94)
+  }
+  ret _vec.init_fn[u8](bind ith(s, _), _str.len(s));
+}
-- 
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