std::str: remove from_utf8.

This function had type &[u8] -> ~str, i.e. it allocates a string
internally, even though the non-allocating version that take &[u8] ->
&str and ~[u8] -> ~str are all that is necessary in most circumstances.

6 files changed, 10 insertions, 8 deletions

diff --git a/src/libextra/base64.rs b/src/libextra/base64.rs
index 94e3917a7ec..c4247799cad 100644
--- a/src/libextra/base64.rs
+++ b/src/libextra/base64.rs
@@ -162,7 +162,7 @@ impl<'self> FromBase64 for &'self str {
      * Convert any base64 encoded string (literal, `@`, `&`, or `~`)
      * to the byte values it encodes.
      *
-     * You can use the `from_utf8` function in `std::str`
+     * You can use the `from_utf8_owned` function in `std::str`
      * to turn a `[u8]` into a string with characters corresponding to those
      * values.
      *
@@ -180,7 +180,7 @@ impl<'self> FromBase64 for &'self str {
      *     println!("base64 output: {}", hello_str);
      *     let res = hello_str.from_base64();
      *     if res.is_ok() {
-     *       let optBytes = str::from_utf8_opt(res.unwrap());
+     *       let optBytes = str::from_utf8_owned_opt(res.unwrap());
      *       if optBytes.is_some() {
      *         println!("decoded from base64: {}", optBytes.unwrap());
      *       }
diff --git a/src/libextra/hex.rs b/src/libextra/hex.rs
index 5a1d1308f8c..7daba4c08f2 100644
--- a/src/libextra/hex.rs
+++ b/src/libextra/hex.rs
@@ -62,7 +62,7 @@ impl<'self> FromHex for &'self str {
      * Convert any hexadecimal encoded string (literal, `@`, `&`, or `~`)
      * to the byte values it encodes.
      *
-     * You can use the `from_utf8` function in `std::str`
+     * You can use the `from_utf8_owned` function in `std::str`
      * to turn a `[u8]` into a string with characters corresponding to those
      * values.
      *
@@ -80,7 +80,7 @@ impl<'self> FromHex for &'self str {
      *     println!("{}", hello_str);
      *     let bytes = hello_str.from_hex().unwrap();
      *     println!("{:?}", bytes);
-     *     let result_str = str::from_utf8(bytes);
+     *     let result_str = str::from_utf8_owned(bytes);
      *     println!("{}", result_str);
      * }
      * ```
diff --git a/src/libextra/terminfo/parser/compiled.rs b/src/libextra/terminfo/parser/compiled.rs
index af1532db935..bc997c5147d 100644
--- a/src/libextra/terminfo/parser/compiled.rs
+++ b/src/libextra/terminfo/parser/compiled.rs
@@ -215,7 +215,9 @@ pub fn parse(file: &mut io::Reader,
         return Err(~"incompatible file: more string offsets than expected");
     }
 
-    let names_str = str::from_utf8(file.read_bytes(names_bytes as uint - 1)); // don't read NUL
+    // don't read NUL
+    let names_str = str::from_utf8_owned(file.read_bytes(names_bytes as uint - 1));
+
     let term_names: ~[~str] = names_str.split('|').map(|s| s.to_owned()).collect();
 
     file.read_byte(); // consume NUL
diff --git a/src/libextra/test.rs b/src/libextra/test.rs
index 93ffb8f9fde..693f4532a43 100644
--- a/src/libextra/test.rs
+++ b/src/libextra/test.rs
@@ -701,7 +701,7 @@ fn should_sort_failures_before_printing_them() {
 
     st.write_failures();
     let s = match st.out {
-        Right(ref m) => str::from_utf8(*m.inner_ref()),
+        Right(ref m) => str::from_utf8_slice(*m.inner_ref()),
         Left(_) => unreachable!()
     };
 
diff --git a/src/libextra/uuid.rs b/src/libextra/uuid.rs
index d40eef732f1..0fbac7771dc 100644
--- a/src/libextra/uuid.rs
+++ b/src/libextra/uuid.rs
@@ -310,7 +310,7 @@ impl Uuid {
             s[i*2+0] = digit[0];
             s[i*2+1] = digit[1];
         }
-        str::from_utf8(s)
+        str::from_utf8_owned(s)
     }
 
     /// Returns a string of hexadecimal digits, separated into groups with a hypen
diff --git a/src/libextra/workcache.rs b/src/libextra/workcache.rs
index ab36defe522..d906896ff60 100644
--- a/src/libextra/workcache.rs
+++ b/src/libextra/workcache.rs
@@ -260,7 +260,7 @@ fn json_encode<'self, T:Encodable<json::Encoder<'self>>>(t: &T) -> ~str {
     let mut writer = MemWriter::new();
     let mut encoder = json::Encoder::init(&mut writer as &mut io::Writer);
     t.encode(&mut encoder);
-    str::from_utf8(writer.inner_ref().as_slice())
+    str::from_utf8_owned(writer.inner())
 }
 
 // FIXME(#5121)