comm-central/third_party/rust/encoding_rs/src/gb18030.rs

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// Copyright 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
// <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 super::*;
use crate::data::*;
use crate::gb18030_2022::*;
use crate::handles::*;
use crate::variant::*;
// Rust 1.14.0 requires the following despite the asterisk above.
use super::in_inclusive_range16;
use super::in_range16;
enum Gb18030Pending {
None,
One(u8),
Two(u8, u8),
Three(u8, u8, u8),
}
impl Gb18030Pending {
fn is_none(&self) -> bool {
match *self {
Gb18030Pending::None => true,
_ => false,
}
}
fn count(&self) -> usize {
match *self {
Gb18030Pending::None => 0,
Gb18030Pending::One(_) => 1,
Gb18030Pending::Two(_, _) => 2,
Gb18030Pending::Three(_, _, _) => 3,
}
}
}
pub struct Gb18030Decoder {
first: Option<u8>,
second: Option<u8>,
third: Option<u8>,
pending: Gb18030Pending,
pending_ascii: Option<u8>,
}
impl Gb18030Decoder {
pub fn new() -> VariantDecoder {
VariantDecoder::Gb18030(Gb18030Decoder {
first: None,
second: None,
third: None,
pending: Gb18030Pending::None,
pending_ascii: None,
})
}
pub fn in_neutral_state(&self) -> bool {
self.first.is_none()
&& self.second.is_none()
&& self.third.is_none()
&& self.pending.is_none()
&& self.pending_ascii.is_none()
}
fn extra_from_state(&self, byte_length: usize) -> Option<usize> {
byte_length.checked_add(
self.pending.count()
+ match self.first {
None => 0,
Some(_) => 1,
}
+ match self.second {
None => 0,
Some(_) => 1,
}
+ match self.third {
None => 0,
Some(_) => 1,
}
+ match self.pending_ascii {
None => 0,
Some(_) => 1,
},
)
}
pub fn max_utf16_buffer_length(&self, byte_length: usize) -> Option<usize> {
// ASCII: 1 to 1 (worst case)
// gbk: 2 to 1
// ranges: 4 to 1 or 4 to 2
checked_add(1, self.extra_from_state(byte_length))
}
pub fn max_utf8_buffer_length_without_replacement(&self, byte_length: usize) -> Option<usize> {
// ASCII: 1 to 1
// gbk: 2 to 2 or 2 to 3
// ranges: 4 to 2, 4 to 3 or 4 to 4
// 0x80: 1 to 3 (worst case)
self.max_utf8_buffer_length(byte_length)
}
pub fn max_utf8_buffer_length(&self, byte_length: usize) -> Option<usize> {
checked_add(1, checked_mul(3, self.extra_from_state(byte_length)))
}
gb18030_decoder_functions!(
{
// If first is between 0x81 and 0xFE, inclusive,
// subtract offset 0x81.
let non_ascii_minus_offset = non_ascii.wrapping_sub(0x81);
if non_ascii_minus_offset > (0xFE - 0x81) {
if non_ascii == 0x80 {
handle.write_upper_bmp(0x20ACu16);
continue 'outermost;
}
return (DecoderResult::Malformed(1, 0),
source.consumed(),
handle.written());
}
non_ascii_minus_offset
},
{
// Two-byte (or error)
if first_minus_offset >= 0x20 {
// Not the gbk ideograph range above GB2312
let trail_minus_offset = second.wrapping_sub(0xA1);
if trail_minus_offset <= (0xFE - 0xA1) {
// GB2312
let hanzi_lead = first_minus_offset.wrapping_sub(0x2F);
if hanzi_lead < (0x77 - 0x2F) {
// Level 1 Hanzi, Level 2 Hanzi
// or one of the 5 PUA code
// points in between.
let hanzi_pointer = mul_94(hanzi_lead) + trail_minus_offset as usize;
let upper_bmp = GB2312_HANZI[hanzi_pointer];
handle.write_upper_bmp(upper_bmp)
} else if first_minus_offset == 0x20 {
// Symbols (starting with ideographic space)
let bmp = GB2312_SYMBOLS[trail_minus_offset as usize];
handle.write_bmp_excl_ascii(bmp)
} else if first_minus_offset == 0x25 && ((trail_minus_offset.wrapping_sub(63) as usize) < GB2312_SYMBOLS_AFTER_GREEK.len()) {
handle.write_bmp_excl_ascii(GB2312_SYMBOLS_AFTER_GREEK[trail_minus_offset.wrapping_sub(63) as usize])
} else if first_minus_offset == 0x27 && (trail_minus_offset as usize) < GB2312_PINYIN.len() {
handle.write_bmp_excl_ascii(GB2312_PINYIN[trail_minus_offset as usize])
} else if first_minus_offset > 0x76 {
// Bottom PUA
let pua = (0xE234 + mul_94(first_minus_offset - 0x77) + trail_minus_offset as usize) as u16;
handle.write_upper_bmp(pua)
} else {
let bmp = gb2312_other_decode((mul_94(first_minus_offset - 0x21) + (trail_minus_offset as usize)) as u16);
handle.write_bmp_excl_ascii(bmp)
}
} else {
// gbk range on the left
let mut trail_minus_offset = second.wrapping_sub(0x40);
if trail_minus_offset > (0x7E - 0x40) {
let trail_minus_range_start = second.wrapping_sub(0x80);
if trail_minus_range_start > (0xA0 - 0x80) {
if second < 0x80 {
return (DecoderResult::Malformed(1, 0),
unread_handle_second.unread(),
handle.written());
}
return (DecoderResult::Malformed(2, 0),
unread_handle_second.consumed(),
handle.written());
}
trail_minus_offset = second - 0x41;
}
// Zero-base lead
let left_lead = first_minus_offset - 0x20;
let left_pointer = left_lead as usize * (190 - 94) +
trail_minus_offset as usize;
let gbk_left_ideograph_pointer = left_pointer.wrapping_sub((0x29 - 0x20) * (190 - 94));
if gbk_left_ideograph_pointer < (((0x7D - 0x29) * (190 - 94)) - 5) {
let upper_bmp = gbk_left_ideograph_decode(gbk_left_ideograph_pointer as u16);
handle.write_upper_bmp(upper_bmp)
} else if left_pointer < ((0x29 - 0x20) * (190 - 94)) {
let bmp = gbk_other_decode(left_pointer as u16);
handle.write_bmp_excl_ascii(bmp)
} else {
let bottom_pointer = left_pointer - (((0x7D - 0x20) * (190 - 94)) - 5);
let upper_bmp = GBK_BOTTOM[bottom_pointer];
handle.write_upper_bmp(upper_bmp)
}
}
} else {
// gbk ideograph range above GB2312
let mut trail_minus_offset = second.wrapping_sub(0x40);
if trail_minus_offset > (0x7E - 0x40) {
let trail_minus_range_start = second.wrapping_sub(0x80);
if trail_minus_range_start > (0xFE - 0x80) {
if second < 0x80 {
return (DecoderResult::Malformed(1, 0),
unread_handle_second.unread(),
handle.written());
}
return (DecoderResult::Malformed(2, 0),
unread_handle_second.consumed(),
handle.written());
}
trail_minus_offset = second - 0x41;
}
let pointer = first_minus_offset as usize * 190usize +
trail_minus_offset as usize;
let upper_bmp = gbk_top_ideograph_decode(pointer as u16);
handle.write_upper_bmp(upper_bmp)
}
},
{
// If third is between 0x81 and 0xFE, inclusive,
// subtract offset 0x81.
let third_minus_offset = third.wrapping_sub(0x81);
if third_minus_offset > (0xFE - 0x81) {
// We have an error. Let's inline what's going
// to happen when `second` is
// reprocessed. (`third` gets unread.)
// `second` is guaranteed ASCII, so let's
// put it in `pending_ascii`. Recompute
// `second` from `second_minus_offset`.
self.pending_ascii = Some(second_minus_offset + 0x30);
// Now unread `third` and designate the previous
// `first` as being in error.
return (DecoderResult::Malformed(1, 1),
unread_handle_third.unread(),
handle.written());
}
third_minus_offset
},
{
// If fourth is between 0x30 and 0x39, inclusive,
// subtract offset 0x30.
//
// If we have an error, we'll inline what's going
// to happen when `second` and `third` are
// reprocessed. (`fourth` gets unread.)
// `second` is guaranteed ASCII, so let's
// put it in `pending_ascii`. Recompute
// `second` from `second_minus_offset` to
// make this block reusable when `second`
// is not in scope.
//
// `third` is guaranteed to be in the range
// that makes it become the new `self.first`.
//
// `fourth` gets unread and the previous
// `first` gets designates as being in error.
let fourth_minus_offset = fourth.wrapping_sub(0x30);
if fourth_minus_offset > (0x39 - 0x30) {
self.pending_ascii = Some(second_minus_offset + 0x30);
self.pending = Gb18030Pending::One(third_minus_offset);
return (DecoderResult::Malformed(1, 2),
unread_handle_fourth.unread(),
handle.written());
}
let pointer = (first_minus_offset as usize * (10 * 126 * 10)) +
(second_minus_offset as usize * (10 * 126)) +
(third_minus_offset as usize * 10) +
fourth_minus_offset as usize;
if pointer <= 39419 {
// BMP
if pointer == 7457 {
handle.write_upper_bmp(0xE7C7)
} else {
handle.write_bmp_excl_ascii(gb18030_range_decode(pointer as u16))
}
} else if pointer >= 189_000 && pointer <= 1_237_575 {
// Astral
handle.write_astral((pointer - (189_000usize - 0x1_0000usize)) as u32)
} else {
return (DecoderResult::Malformed(4, 0),
unread_handle_fourth.consumed(),
handle.written());
}
},
self,
non_ascii,
first_minus_offset,
second,
second_minus_offset,
unread_handle_second,
third,
third_minus_offset,
unread_handle_third,
fourth,
fourth_minus_offset,
unread_handle_fourth,
source,
handle,
'outermost);
}
// XXX Experiment with inline directives
fn gbk_encode_non_unified(bmp: u16) -> Option<(usize, usize)> {
// Try ideographic punctuation first as it's the most likely case.
// Throwing in the check for full-width currencies and tilde is probably
// more size-efficient here than elsewhere.
if in_inclusive_range16(bmp, 0x2014, 0x3017) || in_inclusive_range16(bmp, 0xFF04, 0xFFE1) {
if let Some(pos) = position(&GB2312_SYMBOLS[..], bmp) {
return Some((0xA1, pos + 0xA1));
}
}
// Ext A
if in_range16(bmp, 0x3400, 0x4E00) {
return position(&GBK_BOTTOM[21..100], bmp).map(|pos| {
(
0xFE,
pos + if pos < (0x3F - 16) {
0x40 + 16
} else {
0x41 + 16
},
)
});
}
// Compatibility ideographs
if in_range16(bmp, 0xF900, 0xFB00) {
return position(&GBK_BOTTOM[0..21], bmp).map(|pos| {
if pos < 5 {
// end of second to last row
(0xFD, pos + (190 - 94 - 5 + 0x41))
} else {
// last row
(0xFE, pos + (0x40 - 5))
}
});
}
// Handle everything below U+02CA, which is in GBK_OTHER.
if bmp < 0x02CA {
if in_range16(bmp, 0x00E0, 0x0262) && bmp != 0x00F7 {
// Pinyin except U+1E3F
if let Some(pos) = position(&GB2312_PINYIN[..], bmp) {
return Some((0xA8, pos + 0xA1));
}
} else if in_inclusive_range16(bmp, 0x00A4, 0x00F7)
|| in_inclusive_range16(bmp, 0x02C7, 0x02C9)
{
// Diacritics and Latin 1 symbols
if let Some(pos) = position(&GB2312_SYMBOLS[3..(0xAC - 0x60)], bmp) {
return Some((0xA1, pos + 0xA1 + 3));
}
}
return None;
}
if in_inclusive_range16(bmp, 0xE78D, 0xE864) {
// The array is sorted but short, so let's do linear search.
if let Some(pos) = position(&GB18030_2022_OVERRIDE_PUA[..], bmp) {
let pair = &GB18030_2022_OVERRIDE_BYTES[pos];
return Some((pair[0].into(), pair[1].into()));
}
} else if bmp >= 0xFE17 {
// Various brackets, all in full-width regions
if let Some(pos) = position(&GB2312_SYMBOLS_AFTER_GREEK[..], bmp) {
return Some((0xA6, pos + (0x9F - 0x60 + 0xA1)));
}
} else if bmp == 0x1E3F {
// The one Pinyin placed elsewhere on the BMP
return Some((0xA8, 0x7B - 0x60 + 0xA1));
} else if in_range16(bmp, 0xA000, 0xD800) {
// Since Korean has usage in China, let's spend a branch to fast-track
// Hangul.
return None;
}
// GB2312 other (except bottom PUA and PUA between Hanzi levels).
if let Some(other_pointer) = gb2312_other_encode(bmp) {
let other_lead = other_pointer as usize / 94;
let other_trail = other_pointer as usize % 94;
return Some((0xA2 + other_lead, 0xA1 + other_trail));
}
// At this point, we've handled all mappable characters above U+02D9 but
// below U+2010. Let's check for that range in order to let lower BMP
// characters used for minority languages in China avoid the subsequent
// search that deals mainly with various symbols.
if in_range16(bmp, 0x02DA, 0x2010) {
return None;
}
// GBK other (except radicals and PUA in GBK_BOTTOM).
if let Some(other_pointer) = gbk_other_encode(bmp) {
let other_lead = other_pointer as usize / (190 - 94);
let other_trail = other_pointer as usize % (190 - 94);
let offset = if other_trail < 0x3F { 0x40 } else { 0x41 };
return Some((other_lead + (0x81 + 0x20), other_trail + offset));
}
// CJK Radicals Supplement, PUA, and U+9FBx ideographs in GBK_BOTTOM
if in_inclusive_range16(bmp, 0x2E81, 0x2ECA)
|| in_inclusive_range16(bmp, 0x9FB4, 0x9FBB)
|| in_inclusive_range16(bmp, 0xE816, 0xE855)
{
if let Some(pos) = position(&GBK_BOTTOM[21..], bmp) {
let trail = pos + 16;
let offset = if trail < 0x3F { 0x40 } else { 0x41 };
return Some((0xFE, trail + offset));
}
}
// GB2312 bottom PUA
let bmp_minus_gb2312_bottom_pua = bmp.wrapping_sub(0xE234);
if bmp_minus_gb2312_bottom_pua <= (0xE4C5 - 0xE234) {
let pua_lead = bmp_minus_gb2312_bottom_pua as usize / 94;
let pua_trail = bmp_minus_gb2312_bottom_pua as usize % 94;
return Some((0x81 + 0x77 + pua_lead, 0xA1 + pua_trail));
}
// PUA between Hanzi Levels
let bmp_minus_pua_between_hanzi = bmp.wrapping_sub(0xE810);
if bmp_minus_pua_between_hanzi < 5 {
return Some((0x81 + 0x56, 0xFF - 5 + bmp_minus_pua_between_hanzi as usize));
}
None
}
#[cfg(not(feature = "fast-gb-hanzi-encode"))]
#[inline(always)]
fn encode_hanzi(bmp: u16, _: u16) -> (u8, u8) {
if let Some((lead, trail)) = gb2312_level1_hanzi_encode(bmp) {
(lead, trail)
} else if let Some(hanzi_pointer) = gb2312_level2_hanzi_encode(bmp) {
let hanzi_lead = (hanzi_pointer / 94) + (0xD8);
let hanzi_trail = (hanzi_pointer % 94) + 0xA1;
(hanzi_lead as u8, hanzi_trail as u8)
} else {
let (lead, gbk_trail) = if bmp < 0x72DC {
// Above GB2312
let pointer = gbk_top_ideograph_encode(bmp) as usize;
let lead = (pointer / 190) + 0x81;
let gbk_trail = pointer % 190;
(lead, gbk_trail)
} else {
// To the left of GB2312
let gbk_left_ideograph_pointer = gbk_left_ideograph_encode(bmp) as usize;
let lead = (gbk_left_ideograph_pointer / (190 - 94)) + (0x81 + 0x29);
let gbk_trail = gbk_left_ideograph_pointer % (190 - 94);
(lead, gbk_trail)
};
let offset = if gbk_trail < 0x3F { 0x40 } else { 0x41 };
(lead as u8, (gbk_trail + offset) as u8)
}
}
#[cfg(feature = "fast-gb-hanzi-encode")]
#[inline(always)]
fn encode_hanzi(_: u16, bmp_minus_unified_start: u16) -> (u8, u8) {
gbk_hanzi_encode(bmp_minus_unified_start)
}
pub struct Gb18030Encoder {
extended: bool,
}
impl Gb18030Encoder {
pub fn new(encoding: &'static Encoding, extended_range: bool) -> Encoder {
Encoder::new(
encoding,
VariantEncoder::Gb18030(Gb18030Encoder {
extended: extended_range,
}),
)
}
pub fn max_buffer_length_from_utf16_without_replacement(
&self,
u16_length: usize,
) -> Option<usize> {
if self.extended {
u16_length.checked_mul(4)
} else {
// Need to add, because space check is done with the four-byte
// assumption.
checked_add(2, u16_length.checked_mul(2))
}
}
pub fn max_buffer_length_from_utf8_without_replacement(
&self,
byte_length: usize,
) -> Option<usize> {
if self.extended {
// 1 to 1
// 2 to 2
// 3 to 2
// 2 to 4 (worst)
// 3 to 4
// 4 to 4
checked_add(2, byte_length.checked_mul(2))
} else {
// 1 to 1
// 2 to 2
// 3 to 2
// Need to add, because space check is done with the four-byte
// assumption.
byte_length.checked_add(3)
}
}
ascii_compatible_encoder_functions!(
{
let bmp_minus_unified_start = bmp.wrapping_sub(0x4E00);
if bmp_minus_unified_start < (0x9FA6 - 0x4E00) {
// CJK Unified Ideographs
// Can't fail now, since all are
// mapped.
let (lead, trail) = encode_hanzi(bmp, bmp_minus_unified_start);
handle.write_two(lead, trail)
} else if bmp == 0xE5E5 {
// It's not optimal to check for the unmappable
// and for euro at this stage, but getting
// the out of the way makes the rest of the
// code less messy.
return (
EncoderResult::unmappable_from_bmp(bmp),
source.consumed(),
handle.written(),
);
} else if bmp == 0x20AC && !self.extended {
handle.write_one(0x80u8)
} else {
match gbk_encode_non_unified(bmp) {
Some((lead, trail)) => handle.write_two(lead as u8, trail as u8),
None => {
if !self.extended {
return (
EncoderResult::unmappable_from_bmp(bmp),
source.consumed(),
handle.written(),
);
}
let range_pointer = gb18030_range_encode(bmp);
let first = range_pointer / (10 * 126 * 10);
let rem_first = range_pointer % (10 * 126 * 10);
let second = rem_first / (10 * 126);
let rem_second = rem_first % (10 * 126);
let third = rem_second / 10;
let fourth = rem_second % 10;
handle.write_four(
(first + 0x81) as u8,
(second + 0x30) as u8,
(third + 0x81) as u8,
(fourth + 0x30) as u8,
)
}
}
}
},
{
if !self.extended {
return (
EncoderResult::Unmappable(astral),
source.consumed(),
handle.written(),
);
}
let range_pointer = astral as usize + (189_000usize - 0x1_0000usize);
let first = range_pointer / (10 * 126 * 10);
let rem_first = range_pointer % (10 * 126 * 10);
let second = rem_first / (10 * 126);
let rem_second = rem_first % (10 * 126);
let third = rem_second / 10;
let fourth = rem_second % 10;
handle.write_four(
(first + 0x81) as u8,
(second + 0x30) as u8,
(third + 0x81) as u8,
(fourth + 0x30) as u8,
)
},
bmp,
astral,
self,
source,
handle,
copy_ascii_to_check_space_four,
check_space_four,
false
);
}
// Any copyright to the test code below this comment is dedicated to the
#[cfg(all(test, feature = "alloc"))]
mod tests {
use super::super::testing::*;
use super::super::*;
fn decode_gb18030(bytes: &[u8], expect: &str) {
decode(GB18030, bytes, expect);
}
fn encode_gb18030(string: &str, expect: &[u8]) {
encode(GB18030, string, expect);
}
fn encode_gbk(string: &str, expect: &[u8]) {
encode(GBK, string, expect);
}
#[test]
fn test_gb18030_decode() {
// Empty
decode_gb18030(b"", &"");
// ASCII
decode_gb18030(b"\x61\x62", "\u{0061}\u{0062}");
// euro
decode_gb18030(b"\x80", "\u{20AC}");
decode_gb18030(b"\xA2\xE3", "\u{20AC}");
// two bytes
decode_gb18030(b"\x81\x40", "\u{4E02}");
decode_gb18030(b"\x81\x7E", "\u{4E8A}");
decode_gb18030(b"\x81\x7F", "\u{FFFD}\u{007F}");
decode_gb18030(b"\x81\x80", "\u{4E90}");
decode_gb18030(b"\x81\xFE", "\u{4FA2}");
decode_gb18030(b"\xFE\x40", "\u{FA0C}");
decode_gb18030(b"\xFE\x7F", "\u{FFFD}\u{007F}");
decode_gb18030(b"\xFE\x80", "\u{4723}");
decode_gb18030(b"\xFE\xFE", "\u{E4C5}");
// Changes between GB18030-2005 and GB18030-2022
decode_gb18030(b"\xFE\x7E", "\u{9FB9}");
decode_gb18030(b"\xA6\xDD", "\u{FE14}");
// These mappings remain in place the GB18030-2005 way despite GB18030-2022
decode_gb18030(b"\x82\x35\x91\x32", "\u{9FB9}");
decode_gb18030(b"\x84\x31\x83\x30", "\u{FE14}");
// The difference from the original GB18030
decode_gb18030(b"\xA3\xA0", "\u{3000}");
decode_gb18030(b"\xA1\xA1", "\u{3000}");
// 0xFF
decode_gb18030(b"\xFF\x40", "\u{FFFD}\u{0040}");
decode_gb18030(b"\xE3\xFF\x9A\x33", "\u{FFFD}\u{FFFD}"); // not \u{FFFD}\u{FFFD}\u{0033} !
decode_gb18030(b"\xFF\x32\x9A\x33", "\u{FFFD}\u{0032}\u{FFFD}"); // not \u{FFFD}\u{0032}\u{FFFD}\u{0033} !
decode_gb18030(b"\xFF\x40\x00", "\u{FFFD}\u{0040}\u{0000}");
decode_gb18030(b"\xE3\xFF\x9A\x33\x00", "\u{FFFD}\u{FFFD}\u{0033}\u{0000}");
decode_gb18030(
b"\xFF\x32\x9A\x33\x00",
"\u{FFFD}\u{0032}\u{FFFD}\u{0033}\u{0000}",
);
// Four bytes
decode_gb18030(b"\x81\x30\x81\x30", "\u{0080}");
decode_gb18030(b"\x81\x35\xF4\x37", "\u{E7C7}");
decode_gb18030(b"\x81\x37\xA3\x30", "\u{2603}");
decode_gb18030(b"\x94\x39\xDA\x33", "\u{1F4A9}");
decode_gb18030(b"\xE3\x32\x9A\x35", "\u{10FFFF}");
decode_gb18030(b"\xE3\x32\x9A\x36\x81\x30", "\u{FFFD}\u{FFFD}");
decode_gb18030(b"\xE3\x32\x9A\x36\x81\x40", "\u{FFFD}\u{4E02}");
decode_gb18030(b"\xE3\x32\x9A", "\u{FFFD}"); // not \u{FFFD}\u{0032}\u{FFFD} !
decode_gb18030(b"\xE3\x32\x9A\x00", "\u{FFFD}\u{0032}\u{FFFD}\u{0000}");
}
#[test]
fn test_gb18030_encode() {
// Empty
encode_gb18030("", b"");
// ASCII
encode_gb18030("\u{0061}\u{0062}", b"\x61\x62");
// euro
encode_gb18030("\u{20AC}", b"\xA2\xE3");
// two bytes
encode_gb18030("\u{4E02}", b"\x81\x40");
encode_gb18030("\u{4E8A}", b"\x81\x7E");
if !cfg!(miri) {
// Miri is too slow
encode_gb18030("\u{4E90}", b"\x81\x80");
encode_gb18030("\u{4FA2}", b"\x81\xFE");
encode_gb18030("\u{FA0C}", b"\xFE\x40");
encode_gb18030("\u{E843}", b"\xFE\x7E");
encode_gb18030("\u{4723}", b"\xFE\x80");
encode_gb18030("\u{E4C5}", b"\xFE\xFE");
}
// The difference from the original GB18030
encode_gb18030("\u{E5E5}", b"&#58853;");
encode_gb18030("\u{3000}", b"\xA1\xA1");
// Four bytes
encode_gb18030("\u{0080}", b"\x81\x30\x81\x30");
encode_gb18030("\u{E7C7}", b"\x81\x35\xF4\x37");
if !cfg!(miri) {
// Miri is too slow
encode_gb18030("\u{2603}", b"\x81\x37\xA3\x30");
encode_gb18030("\u{1F4A9}", b"\x94\x39\xDA\x33");
encode_gb18030("\u{10FFFF}", b"\xE3\x32\x9A\x35");
}
// Edge cases
encode_gb18030("\u{00F7}", b"\xA1\xC2");
// GB18030-2022
encode_gb18030("\u{9FB9}", b"\xFE\x7E");
encode_gb18030("\u{FE14}", b"\xA6\xDD");
encode_gb18030("\u{E843}", b"\xFE\x7E");
encode_gb18030("\u{E791}", b"\xA6\xDD");
// Non-change in GB18030-2022
encode_gb18030("\u{E817}", b"\xFE\x52");
}
#[test]
fn test_gbk_encode() {
// Empty
encode_gbk("", b"");
// ASCII
encode_gbk("\u{0061}\u{0062}", b"\x61\x62");
// euro
encode_gbk("\u{20AC}", b"\x80");
// two bytes
encode_gbk("\u{4E02}", b"\x81\x40");
encode_gbk("\u{4E8A}", b"\x81\x7E");
if !cfg!(miri) {
// Miri is too slow
encode_gbk("\u{4E90}", b"\x81\x80");
encode_gbk("\u{4FA2}", b"\x81\xFE");
encode_gbk("\u{FA0C}", b"\xFE\x40");
encode_gbk("\u{E843}", b"\xFE\x7E");
encode_gbk("\u{4723}", b"\xFE\x80");
encode_gbk("\u{E4C5}", b"\xFE\xFE");
}
// The difference from the original gb18030
encode_gbk("\u{E5E5}", b"&#58853;");
encode_gbk("\u{3000}", b"\xA1\xA1");
// Four bytes
encode_gbk("\u{0080}", b"&#128;");
encode_gbk("\u{E7C7}", b"&#59335;");
if !cfg!(miri) {
// Miri is too slow
encode_gbk("\u{2603}", b"&#9731;");
encode_gbk("\u{1F4A9}", b"&#128169;");
encode_gbk("\u{10FFFF}", b"&#1114111;");
}
// Edge cases
encode_gbk("\u{00F7}", b"\xA1\xC2");
// GB18030-2022
encode_gb18030("\u{9FB9}", b"\xFE\x7E");
encode_gb18030("\u{FE14}", b"\xA6\xDD");
encode_gb18030("\u{E843}", b"\xFE\x7E");
encode_gb18030("\u{E791}", b"\xA6\xDD");
// Non-change in GB18030-2022
encode_gb18030("\u{E817}", b"\xFE\x52");
}
#[test]
#[cfg_attr(miri, ignore)] // Miri is too slow
fn test_gb18030_decode_all() {
let input = include_bytes!("test_data/gb18030_in.txt");
let expectation = include_str!("test_data/gb18030_in_ref.txt");
let (cow, had_errors) = GB18030.decode_without_bom_handling(input);
assert!(!had_errors, "Should not have had errors.");
assert_eq!(&cow[..], expectation);
}
#[test]
#[cfg_attr(miri, ignore)] // Miri is too slow
fn test_gb18030_encode_all() {
let input = include_str!("test_data/gb18030_out.txt");
let expectation = include_bytes!("test_data/gb18030_out_ref.txt");
let (cow, encoding, had_errors) = GB18030.encode(input);
assert!(!had_errors, "Should not have had errors.");
assert_eq!(encoding, GB18030);
assert_eq!(&cow[..], &expectation[..]);
}
#[test]
fn test_gb18030_encode_from_utf16_max_length() {
let mut output = [0u8; 20];
let mut encoder = GB18030.new_encoder();
{
let needed = encoder
.max_buffer_length_from_utf16_without_replacement(1)
.unwrap();
let (result, read, written) = encoder.encode_from_utf16_without_replacement(
&[0x3000],
&mut output[..needed],
true,
);
assert_eq!(result, EncoderResult::InputEmpty);
assert_eq!(read, 1);
assert_eq!(written, 2);
assert_eq!(output[0], 0xA1);
assert_eq!(output[1], 0xA1);
}
}
}