From 99a697b56abba8e4ab94fc14b5b4769bee9702f0 Mon Sep 17 00:00:00 2001
From: Brian Anderson <andersrb@gmail.com>
Date: Wed, 13 Apr 2011 21:36:32 -0400
Subject: Add support for upper-case hex and binary output to #fmt.

Only works for uints at present. Necessitated the addition of _str.to_upper.
---
 src/lib/ExtFmt.rs |  6 ++++++
 src/lib/_str.rs   | 18 ++++++++++++++++++
 2 files changed, 24 insertions(+)

(limited to 'src/lib')

diff --git a/src/lib/ExtFmt.rs b/src/lib/ExtFmt.rs
index da32568a..e15fa462 100644
--- a/src/lib/ExtFmt.rs
+++ b/src/lib/ExtFmt.rs
@@ -315,6 +315,12 @@ mod RT {
             case (ty_hex_lower) {
                 ret _uint.to_str(u, 16u);
             }
+            case (ty_hex_upper) {
+                ret _str.to_upper(_uint.to_str(u, 16u));
+            }
+            case (ty_bits) {
+                ret _uint.to_str(u, 2u);
+            }
         }
     }
 
diff --git a/src/lib/_str.rs b/src/lib/_str.rs
index 31d0790d..7690fe44 100644
--- a/src/lib/_str.rs
+++ b/src/lib/_str.rs
@@ -470,6 +470,24 @@ fn connect(vec[str] v, str sep) -> str {
     ret s;
 }
 
+// FIXME: This only handles ASCII
+fn to_upper(str s) -> str {
+    auto outstr = "";
+    auto ascii_a = 'a' as u8;
+    auto ascii_z = 'z' as u8;
+    auto diff = 32u8;
+    for (u8 byte in s) {
+        auto next;
+        if (ascii_a <= byte && byte <= ascii_z) {
+            next = byte - diff;
+        } else {
+            next = byte;
+        }
+        push_byte(outstr, next);
+    }
+    ret outstr;
+}
+
 
 // Local Variables:
 // mode: rust;
-- 
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