Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 469 insertions, 0 deletions

diff --git a/third_party/rust/encoding_rs/src/euc_jp.rs b/third_party/rust/encoding_rs/src/euc_jp.rs
new file mode 100644
index 0000000000..18d1e11ad9
--- /dev/null
+++ b/third_party/rust/encoding_rs/src/euc_jp.rs
@@ -0,0 +1,469 @@
+// 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;
+
+enum EucJpPending {
+    None,
+    Jis0208Lead(u8),
+    Jis0212Shift,
+    Jis0212Lead(u8),
+    HalfWidthKatakana,
+}
+
+impl EucJpPending {
+    fn is_none(&self) -> bool {
+        match *self {
+            EucJpPending::None => true,
+            _ => false,
+        }
+    }
+
+    fn count(&self) -> usize {
+        match *self {
+            EucJpPending::None => 0,
+            EucJpPending::Jis0208Lead(_)
+            | EucJpPending::Jis0212Shift
+            | EucJpPending::HalfWidthKatakana => 1,
+            EucJpPending::Jis0212Lead(_) => 2,
+        }
+    }
+}
+
+pub struct EucJpDecoder {
+    pending: EucJpPending,
+}
+
+impl EucJpDecoder {
+    pub fn new() -> VariantDecoder {
+        VariantDecoder::EucJp(EucJpDecoder {
+            pending: EucJpPending::None,
+        })
+    }
+
+    pub fn in_neutral_state(&self) -> bool {
+        self.pending.is_none()
+    }
+
+    fn plus_one_if_lead(&self, byte_length: usize) -> Option<usize> {
+        byte_length.checked_add(if self.pending.is_none() { 0 } else { 1 })
+    }
+
+    pub fn max_utf16_buffer_length(&self, byte_length: usize) -> Option<usize> {
+        self.plus_one_if_lead(byte_length)
+    }
+
+    pub fn max_utf8_buffer_length_without_replacement(&self, byte_length: usize) -> Option<usize> {
+        // worst case: 2 to 3
+        let len = self.plus_one_if_lead(byte_length);
+        checked_add(2, checked_add_opt(len, checked_div(checked_add(1, len), 2)))
+    }
+
+    pub fn max_utf8_buffer_length(&self, byte_length: usize) -> Option<usize> {
+        checked_mul(3, self.plus_one_if_lead(byte_length))
+    }
+
+    euc_jp_decoder_functions!(
+        {
+            let trail_minus_offset = byte.wrapping_sub(0xA1);
+            // 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))
+            } else if jis0208_lead_minus_offset == 0x04 && trail_minus_offset < 0x56 {
+                // Katakana
+                handle.write_upper_bmp(0x30A1 + u16::from(trail_minus_offset))
+            } else if trail_minus_offset > (0xFE - 0xA1) {
+                if byte < 0x80 {
+                    return (
+                        DecoderResult::Malformed(1, 0),
+                        unread_handle_trail.unread(),
+                        handle.written(),
+                    );
+                }
+                return (
+                    DecoderResult::Malformed(2, 0),
+                    unread_handle_trail.consumed(),
+                    handle.written(),
+                );
+            } else {
+                let pointer = mul_94(jis0208_lead_minus_offset) + usize::from(trail_minus_offset);
+                let level1_pointer = pointer.wrapping_sub(1410);
+                if level1_pointer < JIS0208_LEVEL1_KANJI.len() {
+                    handle.write_upper_bmp(JIS0208_LEVEL1_KANJI[level1_pointer])
+                } 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])
+                    } else {
+                        let ibm_pointer = pointer.wrapping_sub(8272);
+                        if ibm_pointer < IBM_KANJI.len() {
+                            handle.write_upper_bmp(IBM_KANJI[ibm_pointer])
+                        } else if let Some(bmp) = jis0208_symbol_decode(pointer) {
+                            handle.write_bmp_excl_ascii(bmp)
+                        } else if let Some(bmp) = jis0208_range_decode(pointer) {
+                            handle.write_bmp_excl_ascii(bmp)
+                        } else {
+                            return (
+                                DecoderResult::Malformed(2, 0),
+                                unread_handle_trail.consumed(),
+                                handle.written(),
+                            );
+                        }
+                    }
+                }
+            }
+        },
+        {
+            // If lead is between 0xA1 and 0xFE, inclusive,
+            // subtract 0xA1.
+            let jis0212_lead_minus_offset = lead.wrapping_sub(0xA1);
+            if jis0212_lead_minus_offset > (0xFE - 0xA1) {
+                if lead < 0x80 {
+                    return (
+                        DecoderResult::Malformed(1, 0),
+                        unread_handle_jis0212.unread(),
+                        handle.written(),
+                    );
+                }
+                return (
+                    DecoderResult::Malformed(2, 0),
+                    unread_handle_jis0212.consumed(),
+                    handle.written(),
+                );
+            }
+            jis0212_lead_minus_offset
+        },
+        {
+            // If trail is between 0xA1 and 0xFE, inclusive,
+            // subtract 0xA1.
+            let trail_minus_offset = byte.wrapping_sub(0xA1);
+            if trail_minus_offset > (0xFE - 0xA1) {
+                if byte < 0x80 {
+                    return (
+                        DecoderResult::Malformed(2, 0),
+                        unread_handle_trail.unread(),
+                        handle.written(),
+                    );
+                }
+                return (
+                    DecoderResult::Malformed(3, 0),
+                    unread_handle_trail.consumed(),
+                    handle.written(),
+                );
+            }
+            let pointer = mul_94(jis0212_lead_minus_offset) + usize::from(trail_minus_offset);
+            let pointer_minus_kanji = pointer.wrapping_sub(1410);
+            if pointer_minus_kanji < JIS0212_KANJI.len() {
+                handle.write_upper_bmp(JIS0212_KANJI[pointer_minus_kanji])
+            } else if let Some(bmp) = jis0212_accented_decode(pointer) {
+                handle.write_bmp_excl_ascii(bmp)
+            } else {
+                let pointer_minus_upper_cyrillic = pointer.wrapping_sub(597);
+                if pointer_minus_upper_cyrillic <= (607 - 597) {
+                    handle.write_mid_bmp(0x0402 + pointer_minus_upper_cyrillic as u16)
+                } else {
+                    let pointer_minus_lower_cyrillic = pointer.wrapping_sub(645);
+                    if pointer_minus_lower_cyrillic <= (655 - 645) {
+                        handle.write_mid_bmp(0x0452 + pointer_minus_lower_cyrillic as u16)
+                    } else {
+                        return (
+                            DecoderResult::Malformed(3, 0),
+                            unread_handle_trail.consumed(),
+                            handle.written(),
+                        );
+                    }
+                }
+            }
+        },
+        {
+            // If trail is between 0xA1 and 0xDF, inclusive,
+            // subtract 0xA1 and map to half-width Katakana.
+            let trail_minus_offset = byte.wrapping_sub(0xA1);
+            if trail_minus_offset > (0xDF - 0xA1) {
+                if byte < 0x80 {
+                    return (
+                        DecoderResult::Malformed(1, 0),
+                        unread_handle_trail.unread(),
+                        handle.written(),
+                    );
+                }
+                return (
+                    DecoderResult::Malformed(2, 0),
+                    unread_handle_trail.consumed(),
+                    handle.written(),
+                );
+            }
+            handle.write_upper_bmp(0xFF61 + u16::from(trail_minus_offset))
+        },
+        self,
+        non_ascii,
+        jis0208_lead_minus_offset,
+        byte,
+        unread_handle_trail,
+        jis0212_lead_minus_offset,
+        lead,
+        unread_handle_jis0212,
+        source,
+        handle
+    );
+}
+
+#[cfg(feature = "fast-kanji-encode")]
+#[inline(always)]
+fn encode_kanji(bmp: u16) -> Option<(u8, u8)> {
+    jis0208_kanji_euc_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((0xA1, 0xB8))
+    } else if let Some((lead, trail)) = jis0208_level1_kanji_euc_jp_encode(bmp) {
+        Some((lead, trail))
+    } else if let Some(pos) = jis0208_level2_and_additional_kanji_encode(bmp) {
+        let lead = (pos / 94) + 0xD0;
+        let trail = (pos % 94) + 0xA1;
+        Some((lead as u8, trail as u8))
+    } else if let Some(pos) = position(&IBM_KANJI[..], bmp) {
+        let lead = (pos / 94) + 0xF9;
+        let trail = (pos % 94) + 0xA1;
+        Some((lead as u8, trail as u8))
+    } else {
+        None
+    }
+}
+
+pub struct EucJpEncoder;
+
+impl EucJpEncoder {
+    pub fn new(encoding: &'static Encoding) -> Encoder {
+        Encoder::new(encoding, VariantEncoder::EucJp(EucJpEncoder))
+    }
+
+    pub fn max_buffer_length_from_utf16_without_replacement(
+        &self,
+        u16_length: usize,
+    ) -> Option<usize> {
+        u16_length.checked_mul(2)
+    }
+
+    pub fn max_buffer_length_from_utf8_without_replacement(
+        &self,
+        byte_length: usize,
+    ) -> Option<usize> {
+        byte_length.checked_add(1)
+    }
+
+    ascii_compatible_bmp_encoder_functions!(
+        {
+            // Lunde says 60% Hiragana, 30% Kanji, 10% Katakana
+            let bmp_minus_hiragana = bmp.wrapping_sub(0x3041);
+            if bmp_minus_hiragana < 0x53 {
+                handle.write_two(0xA4, 0xA1 + bmp_minus_hiragana as u8)
+            } else if in_inclusive_range16(bmp, 0x4E00, 0x9FA0) {
+                if let Some((lead, trail)) = encode_kanji(bmp) {
+                    handle.write_two(lead, trail)
+                } else {
+                    return (
+                        EncoderResult::unmappable_from_bmp(bmp),
+                        source.consumed(),
+                        handle.written(),
+                    );
+                }
+            } else {
+                let bmp_minus_katakana = bmp.wrapping_sub(0x30A1);
+                if bmp_minus_katakana < 0x56 {
+                    handle.write_two(0xA5, 0xA1 + bmp_minus_katakana as u8)
+                } else {
+                    let bmp_minus_space = bmp.wrapping_sub(0x3000);
+                    if bmp_minus_space < 3 {
+                        // fast-track common punctuation
+                        handle.write_two(0xA1, 0xA1 + bmp_minus_space as u8)
+                    } else if bmp == 0xA5 {
+                        handle.write_one(0x5Cu8)
+                    } else if bmp == 0x203E {
+                        handle.write_one(0x7Eu8)
+                    } else if in_inclusive_range16(bmp, 0xFF61, 0xFF9F) {
+                        handle.write_two(0x8Eu8, (bmp - (0xFF61 - 0xA1)) as u8)
+                    } else if bmp == 0x2212 {
+                        handle.write_two(0xA1u8, 0xDDu8)
+                    } else if let Some(pointer) = jis0208_range_encode(bmp) {
+                        let lead = (pointer / 94) + 0xA1;
+                        let trail = (pointer % 94) + 0xA1;
+                        handle.write_two(lead as u8, trail as u8)
+                    } 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;
+                        let trail = (pos % 94) + 0xA1;
+                        handle.write_two(lead as u8, trail as u8)
+                    } else if let Some(pointer) = ibm_symbol_encode(bmp) {
+                        let lead = (pointer / 94) + 0xA1;
+                        let trail = (pointer % 94) + 0xA1;
+                        handle.write_two(lead as u8, trail as u8)
+                    } else if let Some(pointer) = jis0208_symbol_encode(bmp) {
+                        let lead = (pointer / 94) + 0xA1;
+                        let trail = (pointer % 94) + 0xA1;
+                        handle.write_two(lead as u8, trail as u8)
+                    } else {
+                        return (
+                            EncoderResult::unmappable_from_bmp(bmp),
+                            source.consumed(),
+                            handle.written(),
+                        );
+                    }
+                }
+            }
+        },
+        bmp,
+        self,
+        source,
+        handle,
+        copy_ascii_to_check_space_two,
+        check_space_two,
+        false
+    );
+}
+
+// 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_euc_jp(bytes: &[u8], expect: &str) {
+        decode(EUC_JP, bytes, expect);
+    }
+
+    fn encode_euc_jp(string: &str, expect: &[u8]) {
+        encode(EUC_JP, string, expect);
+    }
+
+    #[test]
+    fn test_euc_jp_decode() {
+        // Empty
+        decode_euc_jp(b"", &"");
+
+        // ASCII
+        decode_euc_jp(b"\x61\x62", "\u{0061}\u{0062}");
+
+        // Half-width
+        decode_euc_jp(b"\x8E\xA1", "\u{FF61}");
+        decode_euc_jp(b"\x8E\xDF", "\u{FF9F}");
+        decode_euc_jp(b"\x8E\xA0", "\u{FFFD}");
+        decode_euc_jp(b"\x8E\xE0", "\u{FFFD}");
+        decode_euc_jp(b"\x8E\xFF", "\u{FFFD}");
+        decode_euc_jp(b"\x8E", "\u{FFFD}");
+
+        // JIS 0212
+        decode_euc_jp(b"\x8F\xA1\xA1", "\u{FFFD}");
+        decode_euc_jp(b"\x8F\xA2\xAF", "\u{02D8}");
+        decode_euc_jp(b"\x8F\xA2\xFF", "\u{FFFD}");
+        decode_euc_jp(b"\x8F\xA1", "\u{FFFD}");
+        decode_euc_jp(b"\x8F", "\u{FFFD}");
+
+        // JIS 0208
+        decode_euc_jp(b"\xA1\xA1", "\u{3000}");
+        decode_euc_jp(b"\xA1\xA0", "\u{FFFD}");
+        decode_euc_jp(b"\xFC\xFE", "\u{FF02}");
+        decode_euc_jp(b"\xFE\xFE", "\u{FFFD}");
+        decode_euc_jp(b"\xA1", "\u{FFFD}");
+
+        // Bad leads
+        decode_euc_jp(b"\xFF\xA1\xA1", "\u{FFFD}\u{3000}");
+        decode_euc_jp(b"\xA0\xA1\xA1", "\u{FFFD}\u{3000}");
+        decode_euc_jp(b"\x80\xA1\xA1", "\u{FFFD}\u{3000}");
+        decode_euc_jp(b"\x81\xA1\xA1", "\u{FFFD}\u{3000}");
+        decode_euc_jp(b"\x82\xA1\xA1", "\u{FFFD}\u{3000}");
+        decode_euc_jp(b"\x83\xA1\xA1", "\u{FFFD}\u{3000}");
+        decode_euc_jp(b"\x84\xA1\xA1", "\u{FFFD}\u{3000}");
+        decode_euc_jp(b"\x85\xA1\xA1", "\u{FFFD}\u{3000}");
+        decode_euc_jp(b"\x86\xA1\xA1", "\u{FFFD}\u{3000}");
+        decode_euc_jp(b"\x87\xA1\xA1", "\u{FFFD}\u{3000}");
+        decode_euc_jp(b"\x88\xA1\xA1", "\u{FFFD}\u{3000}");
+        decode_euc_jp(b"\x89\xA1\xA1", "\u{FFFD}\u{3000}");
+        decode_euc_jp(b"\x8A\xA1\xA1", "\u{FFFD}\u{3000}");
+        decode_euc_jp(b"\x8B\xA1\xA1", "\u{FFFD}\u{3000}");
+        decode_euc_jp(b"\x8C\xA1\xA1", "\u{FFFD}\u{3000}");
+        decode_euc_jp(b"\x8D\xA1\xA1", "\u{FFFD}\u{3000}");
+
+        // Bad ASCII trail
+        decode_euc_jp(b"\xA1\x40", "\u{FFFD}\u{0040}");
+    }
+
+    #[test]
+    fn test_euc_jp_encode() {
+        // Empty
+        encode_euc_jp("", b"");
+
+        // ASCII
+        encode_euc_jp("\u{0061}\u{0062}", b"\x61\x62");
+
+        // Exceptional code points
+        encode_euc_jp("\u{00A5}", b"\x5C");
+        encode_euc_jp("\u{203E}", b"\x7E");
+        encode_euc_jp("\u{2212}", b"\xA1\xDD");
+
+        // Half-width
+        encode_euc_jp("\u{FF61}", b"\x8E\xA1");
+        encode_euc_jp("\u{FF9F}", b"\x8E\xDF");
+
+        // JIS 0212
+        encode_euc_jp("\u{02D8}", b"&#728;");
+
+        // JIS 0208
+        encode_euc_jp("\u{3000}", b"\xA1\xA1");
+        encode_euc_jp("\u{FF02}", b"\xFC\xFE");
+    }
+
+    #[test]
+    #[cfg_attr(miri, ignore)] // Miri is too slow
+    fn test_jis0208_decode_all() {
+        let input = include_bytes!("test_data/jis0208_in.txt");
+        let expectation = include_str!("test_data/jis0208_in_ref.txt");
+        let (cow, had_errors) = EUC_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_jis0208_encode_all() {
+        let input = include_str!("test_data/jis0208_out.txt");
+        let expectation = include_bytes!("test_data/jis0208_out_ref.txt");
+        let (cow, encoding, had_errors) = EUC_JP.encode(input);
+        assert!(!had_errors, "Should not have had errors.");
+        assert_eq!(encoding, EUC_JP);
+        assert_eq!(&cow[..], &expectation[..]);
+    }
+
+    #[test]
+    #[cfg_attr(miri, ignore)] // Miri is too slow
+    fn test_jis0212_decode_all() {
+        let input = include_bytes!("test_data/jis0212_in.txt");
+        let expectation = include_str!("test_data/jis0212_in_ref.txt");
+        let (cow, had_errors) = EUC_JP.decode_without_bom_handling(input);
+        assert!(had_errors, "Should have had errors.");
+        assert_eq!(&cow[..], expectation);
+    }
+}