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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
//! The `ByteString` struct.
use std::ascii::AsciiExt;
use std::borrow::ToOwned;
use std::fmt;
use std::hash::{Hash, Hasher};
use std::mem;
use std::ops;
use std::ops::{Deref, DerefMut};
use std::str;
use std::str::{Bytes, FromStr};
use string_cache::Atom;
/// Encapsulates the IDL `ByteString` type.
#[derive(JSTraceable, Clone, Eq, PartialEq, HeapSizeOf)]
pub struct ByteString(Vec<u8>);
impl ByteString {
/// Creates a new `ByteString`.
pub fn new(value: Vec<u8>) -> ByteString {
ByteString(value)
}
/// Returns `self` as a string, if it encodes valid UTF-8, and `None`
/// otherwise.
pub fn as_str(&self) -> Option<&str> {
str::from_utf8(&self.0).ok()
}
/// Returns ownership of the underlying Vec<u8> and copies an empty
/// vec in its place
pub fn bytes(&mut self) -> Vec<u8> {
mem::replace(&mut self.0, Vec::new())
}
/// Returns the length.
pub fn len(&self) -> usize {
self.0.len()
}
/// Compare `self` to `other`, matching A–Z and a–z as equal.
pub fn eq_ignore_case(&self, other: &ByteString) -> bool {
self.0.eq_ignore_ascii_case(&other.0)
}
/// Returns `self` with A–Z replaced by a–z.
pub fn to_lower(&self) -> ByteString {
ByteString::new(self.0.to_ascii_lowercase())
}
}
impl Into<Vec<u8>> for ByteString {
fn into(self) -> Vec<u8> {
self.0
}
}
impl Hash for ByteString {
fn hash<H: Hasher>(&self, state: &mut H) {
self.0.hash(state);
}
}
impl FromStr for ByteString {
type Err = ();
fn from_str(s: &str) -> Result<ByteString, ()> {
Ok(ByteString::new(s.to_owned().into_bytes()))
}
}
impl ops::Deref for ByteString {
type Target = [u8];
fn deref(&self) -> &[u8] {
&self.0
}
}
/// A string that is constructed from a UCS-2 buffer by replacing invalid code
/// points with the replacement character.
#[derive(Clone, HeapSizeOf)]
pub struct USVString(pub String);
/// Returns whether `s` is a `token`, as defined by
/// [RFC 2616](http://tools.ietf.org/html/rfc2616#page-17).
pub fn is_token(s: &[u8]) -> bool {
if s.is_empty() {
return false; // A token must be at least a single character
}
s.iter().all(|&x| {
// http://tools.ietf.org/html/rfc2616#section-2.2
match x {
0...31 | 127 => false, // CTLs
40 |
41 |
60 |
62 |
64 |
44 |
59 |
58 |
92 |
34 |
47 |
91 |
93 |
63 |
61 |
123 |
125 |
32 => false, // separators
x if x > 127 => false, // non-CHARs
_ => true,
}
})
}
/// A DOMString.
#[derive(Clone, Debug, Eq, Hash, HeapSizeOf, Ord, PartialEq, PartialOrd)]
pub struct DOMString(String);
impl !Send for DOMString {}
impl DOMString {
/// Creates a new `DOMString`.
pub fn new() -> DOMString {
DOMString(String::new())
}
/// Creates a new `DOMString` from a `String`.
pub fn from_string(s: String) -> DOMString {
DOMString(s)
}
/// Appends a given string slice onto the end of this String.
pub fn push_str(&mut self, string: &str) {
self.0.push_str(string)
}
/// Truncates this `DOMString`, removing all contents.
pub fn clear(&mut self) {
self.0.clear()
}
/// An iterator over the bytes of this `DOMString`.
pub fn bytes(&self) -> Bytes {
self.0.bytes()
}
}
impl Default for DOMString {
fn default() -> Self {
DOMString(String::new())
}
}
impl Deref for DOMString {
type Target = str;
#[inline]
fn deref(&self) -> &str {
&self.0
}
}
impl DerefMut for DOMString {
#[inline]
fn deref_mut(&mut self) -> &mut str {
&mut self.0
}
}
impl AsRef<str> for DOMString {
fn as_ref(&self) -> &str {
&self.0
}
}
impl fmt::Display for DOMString {
#[inline]
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
fmt::Display::fmt(&**self, f)
}
}
impl PartialEq<str> for DOMString {
fn eq(&self, other: &str) -> bool {
&**self == other
}
}
impl<'a> PartialEq<&'a str> for DOMString {
fn eq(&self, other: &&'a str) -> bool {
&**self == *other
}
}
impl From<String> for DOMString {
fn from(contents: String) -> DOMString {
DOMString(contents)
}
}
impl<'a> From<&'a str> for DOMString {
fn from(contents: &str) -> DOMString {
DOMString::from(String::from(contents))
}
}
impl From<DOMString> for Atom {
fn from(contents: DOMString) -> Atom {
Atom::from(contents.0)
}
}
impl From<DOMString> for String {
fn from(contents: DOMString) -> String {
contents.0
}
}
impl Into<Vec<u8>> for DOMString {
fn into(self) -> Vec<u8> {
self.0.into()
}
}
impl Extend<char> for DOMString {
fn extend<I>(&mut self, iterable: I) where I: IntoIterator<Item=char> {
self.0.extend(iterable)
}
}
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