1 files changed, 0 insertions, 352 deletions
diff --git a/vendor/encode_unicode/src/utf8_iterators.rs b/vendor/encode_unicode/src/utf8_iterators.rs
deleted file mode 100644
index 891d729..0000000
--- a/vendor/encode_unicode/src/utf8_iterators.rs
+++ /dev/null
@@ -1,352 +0,0 @@
-/* Copyright 2016 The encode_unicode Developers
- *
- * Licensed under the Apache License, Version 2.0, <LICENSE-APACHE or
- * http://apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or
- * http://opensource.org/licenses/MIT>, at your option. This file may not be
- * copied, modified, or distributed except according to those terms.
- */
-
-use utf8_char::Utf8Char;
-use errors::EmptyStrError;
-extern crate core;
-use self::core::{mem, u32, u64};
-use self::core::ops::Not;
-use self::core::fmt;
-use self::core::borrow::Borrow;
-#[cfg(feature="std")]
-use std::io::{Read, Error as ioError};
-
-
-
-/// Read or iterate over the bytes of the UTF-8 representation of a codepoint.
-#[derive(Clone)]
-pub struct Utf8Iterator (u32);
-
-impl From<Utf8Char> for Utf8Iterator {
-    fn from(uc: Utf8Char) -> Self {
-        let used = u32::from_le(unsafe{ mem::transmute(uc.to_array().0) });
-        // uses u64 because shifting an u32 by 32 bits is a no-op.
-        let unused_set = (u64::MAX  <<  uc.len() as u64*8) as u32;
-        Utf8Iterator(used | unused_set)
-    }
-}
-impl From<char> for Utf8Iterator {
-    fn from(c: char) -> Self {
-        Self::from(Utf8Char::from(c))
-    }
-}
-impl Iterator for Utf8Iterator {
-    type Item=u8;
-    fn next(&mut self) -> Option<u8> {
-        let next = self.0 as u8;
-        if next == 0xff {
-            None
-        } else {
-            self.0 = (self.0 >> 8)  |  0xff_00_00_00;
-            Some(next)
-        }
-    }
-    fn size_hint(&self) -> (usize, Option<usize>) {
-        (self.len(),  Some(self.len()))
-    }
-}
-impl ExactSizeIterator for Utf8Iterator {
-    fn len(&self) -> usize {// not straightforward, but possible
-        let unused_bytes = self.0.not().leading_zeros() / 8;
-        4 - unused_bytes as usize
-    }
-}
-#[cfg(feature="std")]
-impl Read for Utf8Iterator {
-    /// Always returns Ok
-    fn read(&mut self,  buf: &mut[u8]) -> Result<usize, ioError> {
-        // Cannot call self.next() until I know I can write the result.
-        for (i, dst) in buf.iter_mut().enumerate() {
-            match self.next() {
-                Some(b) => *dst = b,
-                None    => return Ok(i),
-            }
-        }
-        Ok(buf.len())
-    }
-}
-impl fmt::Debug for Utf8Iterator {
-    fn fmt(&self,  fmtr: &mut fmt::Formatter) -> fmt::Result {
-        let mut content = [0; 4];
-        let mut i = 0;
-        for b in self.clone() {
-            content[i] = b;
-            i += 1;
-        }
-        write!(fmtr, "{:?}", &content[..i])
-    }
-}
-
-
-
-/// Converts an iterator of `Utf8Char` (or `&Utf8Char`)
-/// to an iterator of `u8`s.  
-/// Is equivalent to calling `.flat_map()` on the original iterator,
-/// but the returned iterator is ~40% faster.
-///
-/// The iterator also implements `Read` (if the `std` feature isn't disabled).
-/// Reading will never produce an error, and calls to `.read()` and `.next()`
-/// can be mixed.
-///
-/// The exact number of bytes cannot be known in advance, but `size_hint()`
-/// gives the possible range.
-/// (min: all remaining characters are ASCII, max: all require four bytes)
-///
-/// # Examples
-///
-/// From iterator of values:
-///
-/// ```
-/// use encode_unicode::{iter_bytes, CharExt};
-///
-/// let iterator = "foo".chars().map(|c| c.to_utf8() );
-/// let mut bytes = [0; 4];
-/// for (u,dst) in iter_bytes(iterator).zip(&mut bytes) {*dst=u;}
-/// assert_eq!(&bytes, b"foo\0");
-/// ```
-///
-/// From iterator of references:
-///
-#[cfg_attr(feature="std", doc=" ```")]
-#[cfg_attr(not(feature="std"), doc=" ```no_compile")]
-/// use encode_unicode::{iter_bytes, CharExt, Utf8Char};
-///
-/// let chars: Vec<Utf8Char> = "💣 bomb 💣".chars().map(|c| c.to_utf8() ).collect();
-/// let bytes: Vec<u8> = iter_bytes(&chars).collect();
-/// let flat_map: Vec<u8> = chars.iter().flat_map(|u8c| *u8c ).collect();
-/// assert_eq!(bytes, flat_map);
-/// ```
-///
-/// `Read`ing from it:
-///
-#[cfg_attr(feature="std", doc=" ```")]
-#[cfg_attr(not(feature="std"), doc=" ```no_compile")]
-/// use encode_unicode::{iter_bytes, CharExt};
-/// use std::io::Read;
-///
-/// let s = "Ååh‽";
-/// assert_eq!(s.len(), 8);
-/// let mut buf = [b'E'; 9];
-/// let mut reader = iter_bytes(s.chars().map(|c| c.to_utf8() ));
-/// assert_eq!(reader.read(&mut buf[..]).unwrap(), 8);
-/// assert_eq!(reader.read(&mut buf[..]).unwrap(), 0);
-/// assert_eq!(&buf[..8], s.as_bytes());
-/// assert_eq!(buf[8], b'E');
-/// ```
-pub fn iter_bytes<U:Borrow<Utf8Char>, I:IntoIterator<Item=U>>
-(iterable: I) -> Utf8CharSplitter<U, I::IntoIter> {
-    Utf8CharSplitter{ inner: iterable.into_iter(),  prev: 0 }
-}
-
-/// The iterator type returned by `iter_bytes()`
-///
-/// See its documentation for details.
-#[derive(Clone)]
-pub struct Utf8CharSplitter<U:Borrow<Utf8Char>, I:Iterator<Item=U>> {
-    inner: I,
-    prev: u32,
-}
-impl<I:Iterator<Item=Utf8Char>> From<I> for Utf8CharSplitter<Utf8Char,I> {
-    /// A less generic constructor than `iter_bytes()`
-    fn from(iter: I) -> Self {
-        iter_bytes(iter)
-    }
-}
-impl<U:Borrow<Utf8Char>, I:Iterator<Item=U>> Utf8CharSplitter<U,I> {
-    /// Extracts the source iterator.
-    ///
-    /// Note that `iter_bytes(iter.into_inner())` is not a no-op:  
-    /// If the last returned byte from `next()` was not an ASCII by,
-    /// the remaining bytes of that codepoint is lost.
-    pub fn into_inner(self) -> I {
-        self.inner
-    }
-}
-impl<U:Borrow<Utf8Char>, I:Iterator<Item=U>> Iterator for Utf8CharSplitter<U,I> {
-    type Item = u8;
-    fn next(&mut self) -> Option<Self::Item> {
-        if self.prev == 0 {
-            self.inner.next().map(|u8c| {
-                let array = u8c.borrow().to_array().0;
-                self.prev = unsafe{ u32::from_le(mem::transmute(array)) } >> 8;
-                array[0]
-            })
-        } else {
-            let next = self.prev as u8;
-            self.prev >>= 8;
-            Some(next)
-        }
-    }
-    fn size_hint(&self) -> (usize,Option<usize>) {
-        // Doesn't need to handle unlikely overflows correctly because
-        // size_hint() cannot be relied upon anyway. (the trait isn't unsafe)
-        let (min, max) = self.inner.size_hint();
-        let add = 4 - (self.prev.leading_zeros() / 8) as usize;
-        (min.wrapping_add(add), max.map(|max| max.wrapping_mul(4).wrapping_add(add) ))
-    }
-}
-#[cfg(feature="std")]
-impl<U:Borrow<Utf8Char>, I:Iterator<Item=U>> Read for Utf8CharSplitter<U,I> {
-    /// Always returns `Ok`
-    fn read(&mut self,  buf: &mut[u8]) -> Result<usize, ioError> {
-        let mut i = 0;
-        // write remaining bytes of previous codepoint
-        while self.prev != 0  &&  i < buf.len() {
-            buf[i] = self.prev as u8;
-            self.prev >>= 8;
-            i += 1;
-        }
-        // write whole characters
-        while i < buf.len() {
-            let bytes = match self.inner.next() {
-                Some(u8c) => u8c.borrow().to_array().0,
-                None => break
-            };
-            buf[i] = bytes[0];
-            i += 1;
-            if bytes[1] != 0 {
-                let len = bytes[0].not().leading_zeros() as usize;
-                let mut written = 1;
-                while written < len {
-                    if i < buf.len() {
-                        buf[i] = bytes[written];
-                        i += 1;
-                        written += 1;
-                    } else {
-                        let bytes_as_u32 = unsafe{ u32::from_le(mem::transmute(bytes)) };
-                        self.prev = bytes_as_u32 >> (8*written);
-                        return Ok(i);
-                    }
-                }
-            }
-        }
-        Ok(i)
-    }
-}
-
-
-
-/// An iterator over the `Utf8Char` of a string slice, and their positions.
-///
-/// This struct is created by the `utf8char_indices() method from [`StrExt`] trait. See its documentation for more.
-#[derive(Clone)]
-pub struct Utf8CharIndices<'a>{
-    str: &'a str,
-    index: usize,
-}
-impl<'a> From<&'a str> for Utf8CharIndices<'a> {
-    fn from(s: &str) -> Utf8CharIndices {
-        Utf8CharIndices{str: s, index: 0}
-    }
-}
-impl<'a> Utf8CharIndices<'a> {
-    /// Extract the remainder of the source `str`.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use encode_unicode::{StrExt, Utf8Char};
-    /// let mut iter = "abc".utf8char_indices();
-    /// assert_eq!(iter.next_back(), Some((2, Utf8Char::from('c'))));
-    /// assert_eq!(iter.next(), Some((0, Utf8Char::from('a'))));
-    /// assert_eq!(iter.as_str(), "b");
-    /// ```
-    pub fn as_str(&self) -> &'a str {
-        &self.str[self.index..]
-    }
-}
-impl<'a> Iterator for Utf8CharIndices<'a> {
-    type Item = (usize,Utf8Char);
-    fn next(&mut self) -> Option<(usize,Utf8Char)> {
-        match Utf8Char::from_str_start(&self.str[self.index..]) {
-            Ok((u8c, len)) => {
-                let item = (self.index, u8c);
-                self.index += len;
-                Some(item)
-            },
-            Err(EmptyStrError) => None
-        }
-    }
-    fn size_hint(&self) -> (usize,Option<usize>) {
-        let len = self.str.len() - self.index;
-        // For len+3 to overflow, the slice must fill all but two bytes of
-        // addressable memory, and size_hint() doesn't need to be correct.
-        (len.wrapping_add(3)/4, Some(len))
-    }
-}
-impl<'a> DoubleEndedIterator for Utf8CharIndices<'a> {
-    fn next_back(&mut self) -> Option<(usize,Utf8Char)> {
-        // Cannot refactor out the unwrap without switching to ::from_slice()
-        // since slicing the str panics if not on a boundary.
-        if self.index < self.str.len() {
-            let rev = self.str.bytes().rev();
-            let len = 1 + rev.take_while(|b| b & 0b1100_0000 == 0b1000_0000 ).count();
-            let starts = self.str.len() - len;
-            let (u8c,_) = Utf8Char::from_str_start(&self.str[starts..]).unwrap();
-            self.str = &self.str[..starts];
-            Some((starts, u8c))
-        } else {
-            None
-        }
-    }
-}
-impl<'a> fmt::Debug for Utf8CharIndices<'a> {
-    fn fmt(&self,  fmtr: &mut fmt::Formatter) -> fmt::Result {
-        fmtr.debug_tuple("Utf8CharIndices")
-            .field(&self.index)
-            .field(&self.as_str())
-            .finish()
-    }
-}
-
-
-/// An iterator over the codepoints in a `str` represented as `Utf8Char`.
-#[derive(Clone)]
-pub struct Utf8Chars<'a>(Utf8CharIndices<'a>);
-impl<'a> From<&'a str> for Utf8Chars<'a> {
-    fn from(s: &str) -> Utf8Chars {
-        Utf8Chars(Utf8CharIndices::from(s))
-    }
-}
-impl<'a> Utf8Chars<'a> {
-    /// Extract the remainder of the source `str`.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// use encode_unicode::{StrExt, Utf8Char};
-    /// let mut iter = "abc".utf8chars();
-    /// assert_eq!(iter.next(), Some(Utf8Char::from('a')));
-    /// assert_eq!(iter.next_back(), Some(Utf8Char::from('c')));
-    /// assert_eq!(iter.as_str(), "b");
-    /// ```
-    pub fn as_str(&self) -> &'a str {
-        self.0.as_str()
-    }
-}
-impl<'a> Iterator for Utf8Chars<'a> {
-    type Item = Utf8Char;
-    fn next(&mut self) -> Option<Utf8Char> {
-        self.0.next().map(|(_,u8c)| u8c )
-    }
-    fn size_hint(&self) -> (usize,Option<usize>) {
-        self.0.size_hint()
-    }
-}
-impl<'a> DoubleEndedIterator for Utf8Chars<'a> {
-    fn next_back(&mut self) -> Option<Utf8Char> {
-        self.0.next_back().map(|(_,u8c)| u8c )
-    }
-}
-impl<'a> fmt::Debug for Utf8Chars<'a> {
-    fn fmt(&self,  fmtr: &mut fmt::Formatter) -> fmt::Result {
-        fmtr.debug_tuple("Utf8CharIndices")
-            .field(&self.as_str())
-            .finish()
-    }
-}