Only keep one copy of the UTF8_CHAR_WIDTH table.

… instead of one of each of libcore and libstd_unicode.

Move the `utf8_char_width` function to `core::str`
under the `str_internals` unstable feature.

2 files changed, 1 insertions, 27 deletions

diff --git a/src/libstd_unicode/lib.rs b/src/libstd_unicode/lib.rs
index d52d1549b51..1adf00e40f1 100644
--- a/src/libstd_unicode/lib.rs
+++ b/src/libstd_unicode/lib.rs
@@ -47,7 +47,7 @@ pub mod char;
 #[allow(deprecated)]
 pub mod str {
     pub use u_str::{SplitWhitespace, UnicodeStr};
-    pub use u_str::{is_utf16, utf8_char_width};
+    pub use u_str::is_utf16;
     pub use u_str::Utf16Encoder;
 }
 
diff --git a/src/libstd_unicode/u_str.rs b/src/libstd_unicode/u_str.rs
index 1c7894794c9..0ca6db9b0de 100644
--- a/src/libstd_unicode/u_str.rs
+++ b/src/libstd_unicode/u_str.rs
@@ -77,32 +77,6 @@ impl UnicodeStr for str {
     }
 }
 
-// https://tools.ietf.org/html/rfc3629
-static UTF8_CHAR_WIDTH: [u8; 256] = [
-1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
-1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x1F
-1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
-1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x3F
-1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
-1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x5F
-1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
-1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x7F
-0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
-0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 0x9F
-0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
-0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 0xBF
-0,0,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
-2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, // 0xDF
-3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, // 0xEF
-4,4,4,4,4,0,0,0,0,0,0,0,0,0,0,0, // 0xFF
-];
-
-/// Given a first byte, determine how many bytes are in this UTF-8 character
-#[inline]
-pub fn utf8_char_width(b: u8) -> usize {
-    return UTF8_CHAR_WIDTH[b as usize] as usize;
-}
-
 /// Determines if a vector of `u16` contains valid UTF-16
 pub fn is_utf16(v: &[u16]) -> bool {
     let mut it = v.iter();