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// Copyright 2015-2016 Mozilla Foundation. See the COPYRIGHT
// file at the top-level directory of this distribution.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use handles::*;
use variant::*;
use super::*;
pub struct UserDefinedDecoder;
impl UserDefinedDecoder {
pub fn new() -> VariantDecoder {
VariantDecoder::UserDefined(UserDefinedDecoder)
}
pub fn max_utf16_buffer_length(&self, byte_length: usize) -> usize {
byte_length
}
pub fn max_utf8_buffer_length_without_replacement(&self, byte_length: usize) -> usize {
byte_length * 3
}
pub fn max_utf8_buffer_length(&self, byte_length: usize) -> usize {
byte_length * 3
}
decoder_functions!({},
{},
{
if b < 0x80 {
// XXX optimize ASCII
destination_handle.write_ascii(b);
continue;
}
destination_handle.write_upper_bmp((b as usize + 0xF700usize) as u16);
continue;
},
self,
src_consumed,
dest,
b,
destination_handle,
_unread_handle,
check_space_bmp);
}
pub struct UserDefinedEncoder;
impl UserDefinedEncoder {
pub fn new(encoding: &'static Encoding) -> Encoder {
Encoder::new(encoding, VariantEncoder::UserDefined(UserDefinedEncoder))
}
pub fn max_buffer_length_from_utf16_without_replacement(&self, u16_length: usize) -> usize {
u16_length
}
pub fn max_buffer_length_from_utf8_without_replacement(&self, byte_length: usize) -> usize {
byte_length
}
encoder_functions!({},
{
if c <= '\u{7F}' {
// TODO optimize ASCII run
destination_handle.write_one(c as u8);
continue;
}
if c < '\u{F780}' || c > '\u{F7FF}' {
return (EncoderResult::Unmappable(c),
unread_handle.consumed(),
destination_handle.written());
}
destination_handle.write_one((c as usize - 0xF700usize) as u8);
continue;
},
self,
src_consumed,
source,
dest,
c,
destination_handle,
unread_handle,
check_space_one);
}
// Any copyright to the test code below this comment is dedicated to the
// Public Domain. http://creativecommons.org/publicdomain/zero/1.0/
#[cfg(test)]
mod tests {
use super::super::testing::*;
use super::super::*;
fn decode_x_user_defined(bytes: &[u8], expect: &str) {
decode(X_USER_DEFINED, bytes, expect);
}
fn encode_x_user_defined(string: &str, expect: &[u8]) {
encode(X_USER_DEFINED, string, expect);
}
#[test]
fn test_x_user_defined_decode() {
// ASCII
decode_x_user_defined(b"\x61\x62", "\u{0061}\u{0062}");
decode_x_user_defined(b"\x80\xFF", "\u{F780}\u{F7FF}");
}
#[test]
fn test_x_user_defined_encode() {
// ASCII
encode_x_user_defined("\u{0061}\u{0062}", b"\x61\x62");
encode_x_user_defined("\u{F780}\u{F7FF}", b"\x80\xFF");
encode_x_user_defined("\u{F77F}\u{F800}", b"");
}
}