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SSL iso_2022_jp.rs
Sprache: unbekannt
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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
// 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 super::*;
use crate::data::*;
use crate::handles::*;
use crate::variant::*;
// Rust 1.14.0 requires the following despite the asterisk above.
use super::in_inclusive_range16;
#[derive(Copy, Clone, PartialEq)]
enum Iso2022JpDecoderState {
Ascii,
Roman,
Katakana,
LeadByte,
TrailByte,
EscapeStart,
Escape,
}
pub struct Iso2022JpDecoder {
decoder_state: Iso2022JpDecoderState,
output_state: Iso2022JpDecoderState, // only takes 1 of first 4 values
lead: u8,
output_flag: bool,
pending_prepended: bool,
}
impl Iso2022JpDecoder {
pub fn new() -> VariantDecoder {
VariantDecoder::Iso2022Jp(Iso2022JpDecoder {
decoder_state: Iso2022JpDecoderState::Ascii,
output_state: Iso2022JpDecoderState::Ascii,
lead: 0u8,
output_flag: false,
pending_prepended: false,
})
}
pub fn in_neutral_state(&self) -> bool {
self.decoder_state == Iso2022JpDecoderState::Ascii
&& self.output_state == Iso2022JpDecoderState::Ascii
&& self.lead == 0u8
&& !self.output_flag
&& !self.pending_prepended
}
fn extra_to_input_from_state(&self, byte_length: usize) -> Option<usize> {
byte_length.checked_add(
if self.lead == 0 || self.pending_prepended {
0
} else {
1
} + match self.decoder_state {
Iso2022JpDecoderState::Escape | Iso2022JpDecoderState::EscapeStart => 1,
_ => 0,
},
)
}
fn extra_to_output_from_state(&self) -> usize {
if self.lead != 0 && self.pending_prepended {
1 + self.output_flag as usize
} else {
self.output_flag as usize
}
}
pub fn max_utf16_buffer_length(&self, byte_length: usize) -> Option<usize> {
checked_add(
self.extra_to_output_from_state(),
self.extra_to_input_from_state(byte_length),
)
}
pub fn max_utf8_buffer_length_without_replacement(&self, byte_length: usize) -> Option<us ize> {
// worst case: 1 to 3 (half-width katakana)
self.max_utf8_buffer_length(byte_length)
}
pub fn max_utf8_buffer_length(&self, byte_length: usize) -> Option<usize> {
checked_mul(
3,
checked_add(
self.extra_to_output_from_state(),
self.extra_to_input_from_state(byte_length),
),
)
}
decoder_functions!(
{
if self.pending_prepended {
// lead was set in EscapeStart and "prepended"
// in Escape.
debug_assert!(self.lead == 0x24u8 || self.lead == 0x28u8);
match dest.check_space_bmp() {
Space::Full(_) => {
return (DecoderResult::OutputFull, 0, 0);
}
Space::Available(destination_handle) => {
self.pending_prepended = false;
self.output_flag = false;
match self.decoder_state {
Iso2022JpDecoderState::Ascii | Iso2022JpDecoderState::Roman => {
destination_handle.write_ascii(self.lead);
self.lead = 0x0u8;
}
Iso2022JpDecoderState::Katakana => {
destination_handle
.write_upper_bmp(u16::from(self.lead) - 0x21u16 + 0xFF61u16);
self.lead = 0x0u8;
}
Iso2022JpDecoderState::LeadByte => {
self.decoder_state = Iso2022JpDecoderState::TrailByte;
}
_ => unreachable!(),
}
}
}
}
},
{},
{
match self.decoder_state {
Iso2022JpDecoderState::TrailByte | Iso2022JpDecoderState::EscapeStart => {
self.decoder_state = self.output_state;
return (DecoderResult::Malformed(1, 0), src_consumed, dest.written());
}
Iso2022JpDecoderState::Escape => {
self.pending_prepended = true;
self.decoder_state = self.output_state;
return (DecoderResult::Malformed(1, 1), src_consumed, dest.written());
}
_ => {}
}
},
{
match self.decoder_state {
Iso2022JpDecoderState::Ascii => {
if b == 0x1Bu8 {
self.decoder_state = Iso2022JpDecoderState::EscapeStart;
continue;
}
self.output_flag = false;
if b > 0x7Fu8 || b == 0x0Eu8 || b == 0x0Fu8 {
return (
DecoderResult::Malformed(1, 0),
unread_handle.consumed(),
destination_handle.written(),
);
}
destination_handle.write_ascii(b);
continue;
}
Iso2022JpDecoderState::Roman => {
if b == 0x1Bu8 {
self.decoder_state = Iso2022JpDecoderState::EscapeStart;
continue;
}
self.output_flag = false;
if b == 0x5Cu8 {
destination_handle.write_mid_bmp(0x00A5u16);
continue;
}
if b == 0x7Eu8 {
destination_handle.write_upper_bmp(0x203Eu16);
continue;
}
if b > 0x7Fu8 || b == 0x0Eu8 || b == 0x0Fu8 {
return (
DecoderResult::Malformed(1, 0),
unread_handle.consumed(),
destination_handle.written(),
);
}
destination_handle.write_ascii(b);
continue;
}
Iso2022JpDecoderState::Katakana => {
if b == 0x1Bu8 {
self.decoder_state = Iso2022JpDecoderState::EscapeStart;
continue;
}
self.output_flag = false;
if b >= 0x21u8 && b <= 0x5Fu8 {
destination_handle.write_upper_bmp(u16::from(b) - 0x21u16 + 0xFF61u16);
continue;
}
return (
DecoderResult::Malformed(1, 0),
unread_handle.consumed(),
destination_handle.written(),
);
}
Iso2022JpDecoderState::LeadByte => {
if b == 0x1Bu8 {
self.decoder_state = Iso2022JpDecoderState::EscapeStart;
continue;
}
self.output_flag = false;
if b >= 0x21u8 && b <= 0x7Eu8 {
self.lead = b;
self.decoder_state = Iso2022JpDecoderState::TrailByte;
continue;
}
return (
DecoderResult::Malformed(1, 0),
unread_handle.consumed(),
destination_handle.written(),
);
}
Iso2022JpDecoderState::TrailByte => {
if b == 0x1Bu8 {
self.decoder_state = Iso2022JpDecoderState::EscapeStart;
// The byte in error is the previous
// lead byte.
return (
DecoderResult::Malformed(1, 1),
unread_handle.consumed(),
destination_handle.written(),
);
}
self.decoder_state = Iso2022JpDecoderState::LeadByte;
let jis0208_lead_minus_offset = self.lead - 0x21;
let byte = b;
let handle = destination_handle;
// The code below uses else after continue in
// order to retain the structure seen in EUC-JP.
let trail_minus_offset = byte.wrapping_sub(0x21);
// Fast-track Hiragana (60% according to Lunde)
// and Katakana (10% acconding to Lunde).
if jis0208_lead_minus_offset == 0x03 && trail_minus_offset < 0x53 {
// Hiragana
handle.write_upper_bmp(0x3041 + u16::from(trail_minus_offset));
continue;
} else if jis0208_lead_minus_offset == 0x04 && trail_minus_offset < 0x56 {
// Katakana
handle.write_upper_bmp(0x30A1 + u16::from(trail_minus_offset));
continue;
} else if trail_minus_offset > (0xFE - 0xA1) {
return (
DecoderResult::Malformed(2, 0),
unread_handle.consumed(),
handle.written(),
);
} else {
let pointer =
mul_94(jis0208_lead_minus_offset) + trail_minus_offset as usize;
let level1_pointer = pointer.wrapping_sub(1410);
if level1_pointer < JIS0208_LEVEL1_KANJI.len() {
handle.write_upper_bmp(JIS0208_LEVEL1_KANJI[level1_pointer]);
continue;
} else {
let level2_pointer = pointer.wrapping_sub(4418);
if level2_pointer < JIS0208_LEVEL2_AND_ADDITIONAL_KANJI.len() {
handle.write_upper_bmp(
JIS0208_LEVEL2_AND_ADDITIONAL_KANJI[level2_pointer],
);
continue;
} else {
let ibm_pointer = pointer.wrapping_sub(8272);
if ibm_pointer < IBM_KANJI.len() {
handle.write_upper_bmp(IBM_KANJI[ibm_pointer]);
continue;
} else if let Some(bmp) = jis0208_symbol_decode(pointer) {
handle.write_bmp_excl_ascii(bmp);
continue;
} else if let Some(bmp) = jis0208_range_decode(pointer) {
handle.write_bmp_excl_ascii(bmp);
continue;
} else {
return (
DecoderResult::Malformed(2, 0),
unread_handle.consumed(),
handle.written(),
);
}
}
}
}
}
Iso2022JpDecoderState::EscapeStart => {
if b == 0x24u8 || b == 0x28u8 {
self.lead = b;
self.decoder_state = Iso2022JpDecoderState::Escape;
continue;
}
self.output_flag = false;
self.decoder_state = self.output_state;
return (
DecoderResult::Malformed(1, 0),
unread_handle.unread(),
destination_handle.written(),
);
}
Iso2022JpDecoderState::Escape => {
let mut state: Option<Iso2022JpDecoderState> = None;
if self.lead == 0x28u8 && b == 0x42u8 {
state = Some(Iso2022JpDecoderState::Ascii);
} else if self.lead == 0x28u8 && b == 0x4Au8 {
state = Some(Iso2022JpDecoderState::Roman);
} else if self.lead == 0x28u8 && b == 0x49u8 {
state = Some(Iso2022JpDecoderState::Katakana);
} else if self.lead == 0x24u8 && (b == 0x40u8 || b == 0x42u8) {
state = Some(Iso2022JpDecoderState::LeadByte);
}
match state {
Some(s) => {
self.lead = 0x0u8;
self.decoder_state = s;
self.output_state = s;
let flag = self.output_flag;
self.output_flag = true;
if flag {
// We had an escape sequence
// immediately following another
// escape sequence. Therefore,
// the first one of these was
// useless.
return (
DecoderResult::Malformed(3, 3),
unread_handle.consumed(),
destination_handle.written(),
);
}
continue;
}
None => {
// self.lead is still the previous
// byte. It will be processed in
// the preabmle upon next call.
self.pending_prepended = true;
self.output_flag = false;
self.decoder_state = self.output_state;
// The byte in error is not the
// current or the previous byte but
// the one before those (lone 0x1B).
return (
DecoderResult::Malformed(1, 1),
unread_handle.unread(),
destination_handle.written(),
);
}
}
}
}
},
self,
src_consumed,
dest,
source,
b,
destination_handle,
unread_handle,
check_space_bmp
);
}
#[cfg(feature = "fast-kanji-encode")]
#[inline(always)]
fn is_kanji_mapped(bmp: u16) -> bool {
// Use the shift_jis variant, because we don't care about the
// byte values here.
jis0208_kanji_shift_jis_encode(bmp).is_some()
}
#[cfg(not(feature = "fast-kanji-encode"))]
#[cfg_attr(
feature = "cargo-clippy",
allow(if_let_redundant_pattern_matching, if_same_then_else)
)]
#[inline(always)]
fn is_kanji_mapped(bmp: u16) -> bool {
if 0x4EDD == bmp {
true
} else if let Some(_) = jis0208_level1_kanji_shift_jis_encode(bmp) {
// Use the shift_jis variant, because we don't care about the
// byte values here.
true
} else if let Some(_) = jis0208_level2_and_additional_kanji_encode(bmp) {
true
} else if let Some(_) = position(&IBM_KANJI[..], bmp) {
true
} else {
false
}
}
#[cfg_attr(
feature = "cargo-clippy",
allow(if_let_redundant_pattern_matching, if_same_then_else)
)]
fn is_mapped_for_two_byte_encode(bmp: u16) -> bool {
// The code below uses else after return to
// keep the same structure as in EUC-JP.
// Lunde says 60% Hiragana, 30% Kanji, 10% Katakana
let bmp_minus_hiragana = bmp.wrapping_sub(0x3041);
if bmp_minus_hiragana < 0x53 {
true
} else if in_inclusive_range16(bmp, 0x4E00, 0x9FA0) {
is_kanji_mapped(bmp)
} else {
let bmp_minus_katakana = bmp.wrapping_sub(0x30A1);
if bmp_minus_katakana < 0x56 {
true
} else {
let bmp_minus_space = bmp.wrapping_sub(0x3000);
if bmp_minus_space < 3 {
// fast-track common punctuation
true
} else if in_inclusive_range16(bmp, 0xFF61, 0xFF9F) {
true
} else if bmp == 0x2212 {
true
} else if let Some(_) = jis0208_range_encode(bmp) {
true
} else if in_inclusive_range16(bmp, 0xFA0E, 0xFA2D) || bmp == 0xF929 || bmp == 0xF9DC {
true
} else if let Some(_) = ibm_symbol_encode(bmp) {
true
} else if let Some(_) = jis0208_symbol_encode(bmp) {
true
} else {
false
}
}
}
}
#[cfg(feature = "fast-kanji-encode")]
#[inline(always)]
fn encode_kanji(bmp: u16) -> Option<(u8, u8)> {
jis0208_kanji_iso_2022_jp_encode(bmp)
}
#[cfg(not(feature = "fast-kanji-encode"))]
#[inline(always)]
fn encode_kanji(bmp: u16) -> Option<(u8, u8)> {
if 0x4EDD == bmp {
// Ideograph on the symbol row!
Some((0x21, 0xB8 - 0x80))
} else if let Some((lead, trail)) = jis0208_level1_kanji_iso_2022_jp_encode(bmp) {
Some((lead, trail))
} else if let Some(pos) = jis0208_level2_and_additional_kanji_encode(bmp) {
let lead = (pos / 94) + (0xD0 - 0x80);
let trail = (pos % 94) + 0x21;
Some((lead as u8, trail as u8))
} else if let Some(pos) = position(&IBM_KANJI[..], bmp) {
let lead = (pos / 94) + (0xF9 - 0x80);
let trail = (pos % 94) + 0x21;
Some((lead as u8, trail as u8))
} else {
None
}
}
enum Iso2022JpEncoderState {
Ascii,
Roman,
Jis0208,
}
pub struct Iso2022JpEncoder {
state: Iso2022JpEncoderState,
}
impl Iso2022JpEncoder {
pub fn new(encoding: &'static Encoding) -> Encoder {
Encoder::new(
encoding,
VariantEncoder::Iso2022Jp(Iso2022JpEncoder {
state: Iso2022JpEncoderState::Ascii,
}),
)
}
pub fn has_pending_state(&self) -> bool {
match self.state {
Iso2022JpEncoderState::Ascii => false,
_ => true,
}
}
pub fn max_buffer_length_from_utf16_without_replacement(
&self,
u16_length: usize,
) -> Option<usize> {
// Worst case: every other character is ASCII/Roman and every other
// JIS0208.
// Two UTF-16 input units:
// Transition to Roman: 3
// Roman/ASCII: 1
// Transition to JIS0208: 3
// JIS0208: 2
// End transition: 3
checked_add_opt(
checked_add(3, u16_length.checked_mul(4)),
checked_div(u16_length.checked_add(1), 2),
)
}
pub fn max_buffer_length_from_utf8_without_replacement(
&self,
byte_length: usize,
) -> Option<usize> {
// Worst case: every other character is ASCII/Roman and every other
// JIS0208.
// Three UTF-8 input units: 1 ASCII, 2 JIS0208
// Transition to ASCII: 3
// Roman/ASCII: 1
// Transition to JIS0208: 3
// JIS0208: 2
// End transition: 3
checked_add(3, byte_length.checked_mul(3))
}
encoder_functions!(
{
match self.state {
Iso2022JpEncoderState::Ascii => {}
_ => match dest.check_space_three() {
Space::Full(dst_written) => {
return (EncoderResult::OutputFull, src_consumed, dst_written);
}
Space::Available(destination_handle) => {
self.state = Iso2022JpEncoderState::Ascii;
destination_handle.write_three(0x1Bu8, 0x28u8, 0x42u8);
}
},
}
},
{
match self.state {
Iso2022JpEncoderState::Ascii => {
if c == '\u{0E}' || c == '\u{0F}' || c == '\u{1B}' {
return (
EncoderResult::Unmappable('\u{FFFD}'),
unread_handle.consumed(),
destination_handle.written(),
);
}
if c <= '\u{7F}' {
destination_handle.write_one(c as u8);
continue;
}
if c == '\u{A5}' || c == '\u{203E}' {
self.state = Iso2022JpEncoderState::Roman;
destination_handle.write_three(0x1Bu8, 0x28u8, 0x4Au8);
unread_handle.unread();
continue;
}
if c > '\u{FFFF}' {
return (
EncoderResult::Unmappable(c),
unread_handle.consumed(),
destination_handle.written(),
);
}
// Yes, if c is in index, we'll search
// again in the Jis0208 state, but this
// encoder is not worth optimizing.
if is_mapped_for_two_byte_encode(c as u16) {
self.state = Iso2022JpEncoderState::Jis0208;
destination_handle.write_three(0x1Bu8, 0x24u8, 0x42u8);
unread_handle.unread();
continue;
}
return (
EncoderResult::Unmappable(c),
unread_handle.consumed(),
destination_handle.written(),
);
}
Iso2022JpEncoderState::Roman => {
if c == '\u{0E}' || c == '\u{0F}' || c == '\u{1B}' {
return (
EncoderResult::Unmappable('\u{FFFD}'),
unread_handle.consumed(),
destination_handle.written(),
);
}
if c == '\u{5C}' || c == '\u{7E}' {
self.state = Iso2022JpEncoderState::Ascii;
destination_handle.write_three(0x1Bu8, 0x28u8, 0x42u8);
unread_handle.unread();
continue;
}
if c <= '\u{7F}' {
destination_handle.write_one(c as u8);
continue;
}
if c == '\u{A5}' {
destination_handle.write_one(0x5Cu8);
continue;
}
if c == '\u{203E}' {
destination_handle.write_one(0x7Eu8);
continue;
}
if c > '\u{FFFF}' {
return (
EncoderResult::Unmappable(c),
unread_handle.consumed(),
destination_handle.written(),
);
}
// Yes, if c is in index, we'll search
// again in the Jis0208 state, but this
// encoder is not worth optimizing.
if is_mapped_for_two_byte_encode(c as u16) {
self.state = Iso2022JpEncoderState::Jis0208;
destination_handle.write_three(0x1Bu8, 0x24u8, 0x42u8);
unread_handle.unread();
continue;
}
return (
EncoderResult::Unmappable(c),
unread_handle.consumed(),
destination_handle.written(),
);
}
Iso2022JpEncoderState::Jis0208 => {
if c <= '\u{7F}' {
self.state = Iso2022JpEncoderState::Ascii;
destination_handle.write_three(0x1Bu8, 0x28u8, 0x42u8);
unread_handle.unread();
continue;
}
if c == '\u{A5}' || c == '\u{203E}' {
self.state = Iso2022JpEncoderState::Roman;
destination_handle.write_three(0x1Bu8, 0x28u8, 0x4Au8);
unread_handle.unread();
continue;
}
if c > '\u{FFFF}' {
// Transition to ASCII here in order
// not to make it the responsibility
// of the caller.
self.state = Iso2022JpEncoderState::Ascii;
return (
EncoderResult::Unmappable(c),
unread_handle.consumed(),
destination_handle.write_three_return_written(0x1Bu8, 0x28u8, 0x42u8),
);
}
let bmp = c as u16;
let handle = destination_handle;
// The code below uses else after continue to
// keep the same structure as in EUC-JP.
// Lunde says 60% Hiragana, 30% Kanji, 10% Katakana
let bmp_minus_hiragana = bmp.wrapping_sub(0x3041);
if bmp_minus_hiragana < 0x53 {
handle.write_two(0x24, 0x21 + bmp_minus_hiragana as u8);
continue;
} else if in_inclusive_range16(bmp, 0x4E00, 0x9FA0) {
if let Some((lead, trail)) = encode_kanji(bmp) {
handle.write_two(lead, trail);
continue;
} else {
self.state = Iso2022JpEncoderState::Ascii;
return (
EncoderResult::Unmappable(c),
unread_handle.consumed(),
handle.write_three_return_written(0x1Bu8, 0x28u8, 0x42u8),
);
}
} else {
let bmp_minus_katakana = bmp.wrapping_sub(0x30A1);
if bmp_minus_katakana < 0x56 {
handle.write_two(0x25, 0x21 + bmp_minus_katakana as u8);
continue;
} else {
let bmp_minus_space = bmp.wrapping_sub(0x3000);
if bmp_minus_space < 3 {
// fast-track common punctuation
handle.write_two(0x21, 0x21 + bmp_minus_space as u8);
continue;
}
let bmp_minus_half_width = bmp.wrapping_sub(0xFF61);
if bmp_minus_half_width <= (0xFF9F - 0xFF61) {
// We have half-width katakana. The lead is either
// row 1 or 5 of JIS X 0208, so the lookup table
// only stores the trail.
let lead =
if bmp != 0xFF70 && in_inclusive_range16(bmp, 0xFF66, 0xFF9D) {
0x25u8
} else {
0x21u8
};
let trail =
ISO_2022_JP_HALF_WIDTH_TRAIL[bmp_minus_half_width as usize];
handle.write_two(lead, trail);
continue;
} else if bmp == 0x2212 {
handle.write_two(0x21, 0x5D);
continue;
} else if let Some(pointer) = jis0208_range_encode(bmp) {
let lead = (pointer / 94) + 0x21;
let trail = (pointer % 94) + 0x21;
handle.write_two(lead as u8, trail as u8);
continue;
} else if in_inclusive_range16(bmp, 0xFA0E, 0xFA2D)
|| bmp == 0xF929
|| bmp == 0xF9DC
{
// Guaranteed to be found in IBM_KANJI
let pos = position(&IBM_KANJI[..], bmp).unwrap();
let lead = (pos / 94) + (0xF9 - 0x80);
let trail = (pos % 94) + 0x21;
handle.write_two(lead as u8, trail as u8);
continue;
} else if let Some(pointer) = ibm_symbol_encode(bmp) {
let lead = (pointer / 94) + 0x21;
let trail = (pointer % 94) + 0x21;
handle.write_two(lead as u8, trail as u8);
continue;
} else if let Some(pointer) = jis0208_symbol_encode(bmp) {
let lead = (pointer / 94) + 0x21;
let trail = (pointer % 94) + 0x21;
handle.write_two(lead as u8, trail as u8);
continue;
} else {
self.state = Iso2022JpEncoderState::Ascii;
return (
EncoderResult::Unmappable(c),
unread_handle.consumed(),
handle.write_three_return_written(0x1Bu8, 0x28u8, 0x42u8),
);
}
}
}
}
}
},
self,
src_consumed,
source,
dest,
c,
destination_handle,
unread_handle,
check_space_three
);
}
// Any copyright to the test code below this comment is dedicated to the
// Public Domain. http://creativecommons.org/publicdomain/zero/1.0/
#[cfg(all(test, feature = "alloc"))]
mod tests {
use super::super::testing::*;
use super::super::*;
fn decode_iso_2022_jp(bytes: &[u8], expect: &str) {
decode(ISO_2022_JP, bytes, expect);
}
fn encode_iso_2022_jp(string: &str, expect: &[u8]) {
encode(ISO_2022_JP, string, expect);
}
#[test]
fn test_iso_2022_jp_decode() {
// Empty
decode_iso_2022_jp(b"", &"");
// ASCII
decode_iso_2022_jp(b"\x61\x62", "\u{0061}\u{0062}");
decode_iso_2022_jp(b"\x7F\x0E\x0F", "\u{007F}\u{FFFD}\u{FFFD}");
// Partial escapes
decode_iso_2022_jp(b"\x1B", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B$", "\u{FFFD}$");
decode_iso_2022_jp(b"\x1B(", "\u{FFFD}(");
decode_iso_2022_jp(b"\x1B.", "\u{FFFD}.");
// ISO escapes
decode_iso_2022_jp(b"\x1B(B", ""); // ASCII
decode_iso_2022_jp(b"\x1B(J", ""); // Roman
decode_iso_2022_jp(b"\x1B$@", ""); // 0208
decode_iso_2022_jp(b"\x1B$B", ""); // 0208
decode_iso_2022_jp(b"\x1B$(D", "\u{FFFD}$(D"); // 2012
decode_iso_2022_jp(b"\x1B$A", "\u{FFFD}$A"); // GB2312
decode_iso_2022_jp(b"\x1B$(C", "\u{FFFD}$(C"); // KR
decode_iso_2022_jp(b"\x1B.A", "\u{FFFD}.A"); // Latin-1
decode_iso_2022_jp(b"\x1B.F", "\u{FFFD}.F"); // Greek
decode_iso_2022_jp(b"\x1B(I", ""); // Half-width Katakana
decode_iso_2022_jp(b"\x1B$(O", "\u{FFFD}$(O"); // 2013
decode_iso_2022_jp(b"\x1B$(P", "\u{FFFD}$(P"); // 2013
decode_iso_2022_jp(b"\x1B$(Q", "\u{FFFD}$(Q"); // 2013
decode_iso_2022_jp(b"\x1B$)C", "\u{FFFD}$)C"); // KR
decode_iso_2022_jp(b"\x1B$)A", "\u{FFFD}$)A"); // GB2312
decode_iso_2022_jp(b"\x1B$)G", "\u{FFFD}$)G"); // CNS
decode_iso_2022_jp(b"\x1B$*H", "\u{FFFD}$*H"); // CNS
decode_iso_2022_jp(b"\x1B$)E", "\u{FFFD}$)E"); // IR
decode_iso_2022_jp(b"\x1B$+I", "\u{FFFD}$+I"); // CNS
decode_iso_2022_jp(b"\x1B$+J", "\u{FFFD}$+J"); // CNS
decode_iso_2022_jp(b"\x1B$+K", "\u{FFFD}$+K"); // CNS
decode_iso_2022_jp(b"\x1B$+L", "\u{FFFD}$+L"); // CNS
decode_iso_2022_jp(b"\x1B$+M", "\u{FFFD}$+M"); // CNS
decode_iso_2022_jp(b"\x1B$(@", "\u{FFFD}$(@"); // 0208
decode_iso_2022_jp(b"\x1B$(A", "\u{FFFD}$(A"); // GB2312
decode_iso_2022_jp(b"\x1B$(B", "\u{FFFD}$(B"); // 0208
decode_iso_2022_jp(b"\x1B%G", "\u{FFFD}%G"); // UTF-8
// ASCII
decode_iso_2022_jp(b"\x5B", "\u{005B}");
decode_iso_2022_jp(b"\x5C", "\u{005C}");
decode_iso_2022_jp(b"\x7E", "\u{007E}");
decode_iso_2022_jp(b"\x0E", "\u{FFFD}");
decode_iso_2022_jp(b"\x0F", "\u{FFFD}");
decode_iso_2022_jp(b"\x80", "\u{FFFD}");
decode_iso_2022_jp(b"\xFF", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B(B\x5B", "\u{005B}");
decode_iso_2022_jp(b"\x1B(B\x5C", "\u{005C}");
decode_iso_2022_jp(b"\x1B(B\x7E", "\u{007E}");
decode_iso_2022_jp(b"\x1B(B\x0E", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B(B\x0F", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B(B\x80", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B(B\xFF", "\u{FFFD}");
// Roman
decode_iso_2022_jp(b"\x1B(J\x5B", "\u{005B}");
decode_iso_2022_jp(b"\x1B(J\x5C", "\u{00A5}");
decode_iso_2022_jp(b"\x1B(J\x7E", "\u{203E}");
decode_iso_2022_jp(b"\x1B(J\x0E", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B(J\x0F", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B(J\x80", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B(J\xFF", "\u{FFFD}");
// Katakana
decode_iso_2022_jp(b"\x1B(I\x20", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B(I\x21", "\u{FF61}");
decode_iso_2022_jp(b"\x1B(I\x5F", "\u{FF9F}");
decode_iso_2022_jp(b"\x1B(I\x60", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B(I\x0E", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B(I\x0F", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B(I\x80", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B(I\xFF", "\u{FFFD}");
// 0208 differences from 1978 to 1983
decode_iso_2022_jp(b"\x1B$@\x54\x64", "\u{58FA}");
decode_iso_2022_jp(b"\x1B$@\x44\x5B", "\u{58F7}");
decode_iso_2022_jp(b"\x1B$@\x74\x21", "\u{582F}");
decode_iso_2022_jp(b"\x1B$@\x36\x46", "\u{5C2D}");
decode_iso_2022_jp(b"\x1B$@\x28\x2E", "\u{250F}");
decode_iso_2022_jp(b"\x1B$B\x54\x64", "\u{58FA}");
decode_iso_2022_jp(b"\x1B$B\x44\x5B", "\u{58F7}");
decode_iso_2022_jp(b"\x1B$B\x74\x21", "\u{582F}");
decode_iso_2022_jp(b"\x1B$B\x36\x46", "\u{5C2D}");
decode_iso_2022_jp(b"\x1B$B\x28\x2E", "\u{250F}");
// Broken 0208
decode_iso_2022_jp(b"\x1B$B\x28\x41", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B$@\x80\x54\x64", "\u{FFFD}\u{58FA}");
decode_iso_2022_jp(b"\x1B$B\x28\x80", "\u{FFFD}");
if cfg!(miri) {
// Miri is too slow
return;
}
// Transitions
decode_iso_2022_jp(b"\x1B(B\x5C\x1B(J\x5C", "\u{005C}\u{00A5}");
decode_iso_2022_jp(b"\x1B(B\x5C\x1B(I\x21", "\u{005C}\u{FF61}");
decode_iso_2022_jp(b"\x1B(B\x5C\x1B$@\x54\x64", "\u{005C}\u{58FA}");
decode_iso_2022_jp(b"\x1B(B\x5C\x1B$B\x54\x64", "\u{005C}\u{58FA}");
decode_iso_2022_jp(b"\x1B(J\x5C\x1B(B\x5C", "\u{00A5}\u{005C}");
decode_iso_2022_jp(b"\x1B(J\x5C\x1B(I\x21", "\u{00A5}\u{FF61}");
decode_iso_2022_jp(b"\x1B(J\x5C\x1B$@\x54\x64", "\u{00A5}\u{58FA}");
decode_iso_2022_jp(b"\x1B(J\x5C\x1B$B\x54\x64", "\u{00A5}\u{58FA}");
decode_iso_2022_jp(b"\x1B(I\x21\x1B(J\x5C", "\u{FF61}\u{00A5}");
decode_iso_2022_jp(b"\x1B(I\x21\x1B(B\x5C", "\u{FF61}\u{005C}");
decode_iso_2022_jp(b"\x1B(I\x21\x1B$@\x54\x64", "\u{FF61}\u{58FA}");
decode_iso_2022_jp(b"\x1B(I\x21\x1B$B\x54\x64", "\u{FF61}\u{58FA}");
decode_iso_2022_jp(b"\x1B$@\x54\x64\x1B(J\x5C", "\u{58FA}\u{00A5}");
decode_iso_2022_jp(b"\x1B$@\x54\x64\x1B(I\x21", "\u{58FA}\u{FF61}");
decode_iso_2022_jp(b"\x1B$@\x54\x64\x1B(B\x5C", "\u{58FA}\u{005C}");
decode_iso_2022_jp(b"\x1B$@\x54\x64\x1B$B\x54\x64", "\u{58FA}\u{58FA}");
decode_iso_2022_jp(b"\x1B$B\x54\x64\x1B(J\x5C", "\u{58FA}\u{00A5}");
decode_iso_2022_jp(b"\x1B$B\x54\x64\x1B(I\x21", "\u{58FA}\u{FF61}");
decode_iso_2022_jp(b"\x1B$B\x54\x64\x1B$@\x54\x64", "\u{58FA}\u{58FA}");
decode_iso_2022_jp(b"\x1B$B\x54\x64\x1B(B\x5C", "\u{58FA}\u{005C}");
// Empty transitions
decode_iso_2022_jp(b"\x1B(B\x1B(J", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B(B\x1B(I", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B(B\x1B$@", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B(B\x1B$B", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B(J\x1B(B", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B(J\x1B(I", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B(J\x1B$@", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B(J\x1B$B", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B(I\x1B(J", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B(I\x1B(B", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B(I\x1B$@", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B(I\x1B$B", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B$@\x1B(J", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B$@\x1B(I", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B$@\x1B(B", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B$@\x1B$B", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B$B\x1B(J", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B$B\x1B(I", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B$B\x1B$@", "\u{FFFD}");
decode_iso_2022_jp(b"\x1B$B\x1B(B", "\u{FFFD}");
// Transitions to self
decode_iso_2022_jp(b"\x1B(B\x5C\x1B(B\x5C", "\u{005C}\u{005C}");
decode_iso_2022_jp(b"\x1B(J\x5C\x1B(J\x5C", "\u{00A5}\u{00A5}");
decode_iso_2022_jp(b"\x1B(I\x21\x1B(I\x21", "\u{FF61}\u{FF61}");
decode_iso_2022_jp(b"\x1B$@\x54\x64\x1B$@\x54\x64", "\u{58FA}\u{58FA}");
decode_iso_2022_jp(b"\x1B$B\x54\x64\x1B$B\x54\x64", "\u{58FA}\u{58FA}");
}
#[test]
fn test_iso_2022_jp_encode() {
// Empty
encode_iso_2022_jp("", b"");
// ASCII
encode_iso_2022_jp("ab", b"ab");
encode_iso_2022_jp("\u{1F4A9}", b"💩");
encode_iso_2022_jp("\x1B", b"�");
encode_iso_2022_jp("\x0E", b"�");
encode_iso_2022_jp("\x0F", b"�");
// Roman
encode_iso_2022_jp("a\u{00A5}b", b"a\x1B(J\x5Cb\x1B(B");
encode_iso_2022_jp("a\u{203E}b", b"a\x1B(J\x7Eb\x1B(B");
if !cfg!(miri) {
// Miri is too slow
encode_iso_2022_jp("a\u{00A5}b\x5C", b"a\x1B(J\x5Cb\x1B(B\x5C");
encode_iso_2022_jp("a\u{203E}b\x7E", b"a\x1B(J\x7Eb\x1B(B\x7E");
encode_iso_2022_jp("\u{00A5}\u{1F4A9}", b"\x1B(J\x5C💩\x1B(B");
encode_iso_2022_jp("\u{00A5}\x1B", b"\x1B(J\x5C�\x1B(B");
encode_iso_2022_jp("\u{00A5}\x0E", b"\x1B(J\x5C�\x1B(B");
encode_iso_2022_jp("\u{00A5}\x0F", b"\x1B(J\x5C�\x1B(B");
encode_iso_2022_jp("\u{00A5}\u{58FA}", b"\x1B(J\x5C\x1B$B\x54\x64\x1B(B");
}
// Half-width Katakana
encode_iso_2022_jp("\u{FF61}", b"\x1B$B\x21\x23\x1B(B");
encode_iso_2022_jp("\u{FF65}", b"\x1B$B\x21\x26\x1B(B");
if !cfg!(miri) {
// Miri is too slow
encode_iso_2022_jp("\u{FF66}", b"\x1B$B\x25\x72\x1B(B");
encode_iso_2022_jp("\u{FF70}", b"\x1B$B\x21\x3C\x1B(B");
encode_iso_2022_jp("\u{FF9D}", b"\x1B$B\x25\x73\x1B(B");
encode_iso_2022_jp("\u{FF9E}", b"\x1B$B\x21\x2B\x1B(B");
encode_iso_2022_jp("\u{FF9F}", b"\x1B$B\x21\x2C\x1B(B");
}
// 0208
encode_iso_2022_jp("\u{58FA}", b"\x1B$B\x54\x64\x1B(B");
encode_iso_2022_jp("\u{58FA}\u{250F}", b"\x1B$B\x54\x64\x28\x2E\x1B(B");
if !cfg!(miri) {
// Miri is too slow
encode_iso_2022_jp("\u{58FA}\u{1F4A9}", b"\x1B$B\x54\x64\x1B(B💩");
encode_iso_2022_jp("\u{58FA}\x1B", b"\x1B$B\x54\x64\x1B(B�");
encode_iso_2022_jp("\u{58FA}\x0E", b"\x1B$B\x54\x64\x1B(B�");
encode_iso_2022_jp("\u{58FA}\x0F", b"\x1B$B\x54\x64\x1B(B�");
encode_iso_2022_jp("\u{58FA}\u{00A5}", b"\x1B$B\x54\x64\x1B(J\x5C\x1B(B");
encode_iso_2022_jp("\u{58FA}a", b"\x1B$B\x54\x64\x1B(Ba");
}
}
#[test]
#[cfg_attr(miri, ignore)] // Miri is too slow
fn test_iso_2022_jp_decode_all() {
let input = include_bytes!("test_data/iso_2022_jp_in.txt");
let expectation = include_str!("test_data/iso_2022_jp_in_ref.txt");
let (cow, had_errors) = ISO_2022_JP.decode_without_bom_handling(input);
assert!(had_errors, "Should have had errors.");
assert_eq!(&cow[..], expectation);
}
#[test]
#[cfg_attr(miri, ignore)] // Miri is too slow
fn test_iso_2022_jp_encode_all() {
let input = include_str!("test_data/iso_2022_jp_out.txt");
let expectation = include_bytes!("test_data/iso_2022_jp_out_ref.txt");
let (cow, encoding, had_errors) = ISO_2022_JP.encode(input);
assert!(!had_errors, "Should not have had errors.");
assert_eq!(encoding, ISO_2022_JP);
assert_eq!(&cow[..], &expectation[..]);
}
#[test]
fn test_iso_2022_jp_half_width_katakana_length() {
let mut output = [0u8; 20];
let mut decoder = ISO_2022_JP.new_decoder();
{
let (result, read, written) =
decoder.decode_to_utf8_without_replacement(b"\x1B\x28\x49", &mut output, false);
assert_eq!(result, DecoderResult::InputEmpty);
assert_eq!(read, 3);
assert_eq!(written, 0);
}
{
let needed = decoder
.max_utf8_buffer_length_without_replacement(1)
.unwrap();
let (result, read, written) =
decoder.decode_to_utf8_without_replacement(b"\x21", &mut output[..needed], true);
assert_eq!(result, DecoderResult::InputEmpty);
assert_eq!(read, 1);
assert_eq!(written, 3);
assert_eq!(output[0], 0xEF);
assert_eq!(output[1], 0xBD);
assert_eq!(output[2], 0xA1);
}
}
#[test]
fn test_iso_2022_jp_length_after_escape() {
let mut output = [0u16; 20];
let mut decoder = ISO_2022_JP.new_decoder();
{
let (result, read, written, had_errors) =
decoder.decode_to_utf16(b"\x1B", &mut output, false);
assert_eq!(result, CoderResult::InputEmpty);
assert_eq!(read, 1);
assert_eq!(written, 0);
assert!(!had_errors);
}
{
let needed = decoder.max_utf16_buffer_length(1).unwrap();
let (result, read, written, had_errors) =
decoder.decode_to_utf16(b"A", &mut output[..needed], true);
assert_eq!(result, CoderResult::InputEmpty);
assert_eq!(read, 1);
assert_eq!(written, 2);
assert!(had_errors);
assert_eq!(output[0], 0xFFFD);
assert_eq!(output[1], 0x0041);
}
}
#[test]
fn test_iso_2022_jp_encode_from_two_low_surrogates() {
let expectation = b"��";
let mut output = [0u8; 40];
let mut encoder = ISO_2022_JP.new_encoder();
let (result, read, written, had_errors) =
encoder.encode_from_utf16(&[0xDC00u16, 0xDEDEu16], &mut output[..], true);
assert_eq!(result, CoderResult::InputEmpty);
assert_eq!(read, 2);
assert_eq!(written, expectation.len());
assert!(had_errors);
assert_eq!(&output[..written], expectation);
}
}
[ Verzeichnis aufwärts0.68unsichere Verbindung
Übersetzung europäischer Sprachen durch Browser
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2026-04-02
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