Merging upstream version 1.73.0+dfsg1.

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

1 files changed, 442 insertions, 0 deletions

diff --git a/vendor/encoding_rs/src/euc_kr.rs b/vendor/encoding_rs/src/euc_kr.rs
new file mode 100644
index 000000000..6487d4599
--- /dev/null
+++ b/vendor/encoding_rs/src/euc_kr.rs
@@ -0,0 +1,442 @@
+// 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;
+use super::in_range16;
+
+pub struct EucKrDecoder {
+    lead: Option<u8>,
+}
+
+impl EucKrDecoder {
+    pub fn new() -> VariantDecoder {
+        VariantDecoder::EucKr(EucKrDecoder { lead: None })
+    }
+
+    pub fn in_neutral_state(&self) -> bool {
+        self.lead.is_none()
+    }
+
+    fn plus_one_if_lead(&self, byte_length: usize) -> Option<usize> {
+        byte_length.checked_add(match self.lead {
+            None => 0,
+            Some(_) => 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))
+    }
+
+    ascii_compatible_two_byte_decoder_functions!(
+        {
+            // If lead 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) {
+                return (DecoderResult::Malformed(1, 0),
+                        source.consumed(),
+                        handle.written());
+            }
+            non_ascii_minus_offset
+        },
+        {
+            if lead_minus_offset >= 0x20 {
+                // Not the extension range above KS X 1001
+                let trail_minus_offset =
+                    byte.wrapping_sub(0xA1);
+                if trail_minus_offset <= (0xFE - 0xA1) {
+                    // KS X 1001
+                    let ksx_pointer = mul_94(lead_minus_offset - 0x20) + trail_minus_offset as usize;
+                    let hangul_pointer = ksx_pointer.wrapping_sub((0x2F - 0x20) * 94);
+                    if hangul_pointer < KSX1001_HANGUL.len() {
+                        let upper_bmp = KSX1001_HANGUL[hangul_pointer];
+                        handle.write_upper_bmp(upper_bmp)
+                    } else if ksx_pointer < KSX1001_SYMBOLS.len() {
+                        let bmp = KSX1001_SYMBOLS[ksx_pointer];
+                        handle.write_bmp_excl_ascii(bmp)
+                    } else {
+                        let hanja_pointer = ksx_pointer.wrapping_sub((0x49 - 0x20) * 94);
+                        if hanja_pointer < KSX1001_HANJA.len() {
+                            let upper_bmp = KSX1001_HANJA[hanja_pointer];
+                            handle.write_upper_bmp(upper_bmp)
+                        } else if (lead_minus_offset == 0x27) && ((trail_minus_offset as usize) < KSX1001_UPPERCASE.len()) {
+                            let mid_bmp = KSX1001_UPPERCASE[trail_minus_offset as usize];
+                            if mid_bmp == 0 {
+                                return (DecoderResult::Malformed(2, 0),
+                                        unread_handle_trail.consumed(),
+                                        handle.written());
+                            }
+                            handle.write_mid_bmp(mid_bmp)
+                        } else if (lead_minus_offset == 0x28) && ((trail_minus_offset as usize) < KSX1001_LOWERCASE.len()) {
+                            let mid_bmp = KSX1001_LOWERCASE[trail_minus_offset as usize];
+                            handle.write_mid_bmp(mid_bmp)
+                        } else if (lead_minus_offset == 0x25) && ((trail_minus_offset as usize) < KSX1001_BOX.len()) {
+                            let upper_bmp = KSX1001_BOX[trail_minus_offset as usize];
+                            handle.write_upper_bmp(upper_bmp)
+                        } else {
+                            let other_pointer = ksx_pointer.wrapping_sub(2 * 94);
+                            if other_pointer < 0x039F {
+                                let bmp = ksx1001_other_decode(other_pointer as u16);
+                                // ASCII range means unassigned
+                                if bmp < 0x80 {
+                                    return (DecoderResult::Malformed(2, 0),
+                                            unread_handle_trail.consumed(),
+                                            handle.written());
+                                }
+                                handle.write_bmp_excl_ascii(bmp)
+                            } else {
+                                return (DecoderResult::Malformed(2, 0),
+                                        unread_handle_trail.consumed(),
+                                        handle.written());
+                            }
+                        }
+                    }
+                } else {
+                    // Extension range to the left of
+                    // KS X 1001
+                    let left_lead = lead_minus_offset - 0x20;
+                    let left_trail = if byte.wrapping_sub(0x40 + 0x41) < (0x60 - 0x40) {
+                        byte - (12 + 0x41)
+                    } else if byte.wrapping_sub(0x20 + 0x41) < (0x3A - 0x20) {
+                        byte - (6 + 0x41)
+                    } else if byte.wrapping_sub(0x41) < 0x1A {
+                        byte - 0x41
+                    } else {
+                        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());
+                    };
+                    let left_pointer = ((left_lead as usize) * (190 - 94 - 12)) + left_trail as usize;
+                    if left_pointer < (0x45 - 0x20) * (190 - 94 - 12) + 0x12 {
+                        let upper_bmp = cp949_left_hangul_decode(left_pointer as u16);
+                        handle.write_upper_bmp(upper_bmp)
+                    } else {
+                        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 {
+                // Extension range above KS X 1001
+                let top_trail = if byte.wrapping_sub(0x40 + 0x41) < (0xBE - 0x40) {
+                    byte - (12 + 0x41)
+                } else if byte.wrapping_sub(0x20 + 0x41) < (0x3A - 0x20) {
+                    byte - (6 + 0x41)
+                } else if byte.wrapping_sub(0x41) < 0x1A {
+                    byte - 0x41
+                } else {
+                    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());
+                };
+                let top_pointer = ((lead_minus_offset as usize) * (190 - 12)) + top_trail as usize;
+                let upper_bmp = cp949_top_hangul_decode(top_pointer as u16);
+                handle.write_upper_bmp(upper_bmp)
+            }
+        },
+        self,
+        non_ascii,
+        byte,
+        lead_minus_offset,
+        unread_handle_trail,
+        source,
+        handle,
+        'outermost,
+        copy_ascii_from_check_space_bmp,
+        check_space_bmp,
+        true);
+}
+
+fn ksx1001_encode_misc(bmp: u16) -> Option<(usize, usize)> {
+    if in_inclusive_range16(bmp, 0x3000, 0x3015) {
+        if let Some(pos) = position(&KSX1001_SYMBOLS[..(0xAB - 0x60)], bmp) {
+            return Some((0xA1, pos + 0xA1));
+        }
+    }
+    if let Some(other_pointer) = ksx1001_other_encode(bmp) {
+        let other_lead = ((other_pointer as usize) / 94) + (0x81 + 0x22);
+        let other_trail = ((other_pointer as usize) % 94) + 0xA1;
+        return Some((other_lead, other_trail));
+    }
+    if in_range16(bmp, 0x00AA, 0x0168) {
+        // Latin
+        if let Some(pos) = position(&KSX1001_LOWERCASE[..], bmp) {
+            return Some((0x81 + 0x28, 0xA1 + pos));
+        }
+        if let Some(pos) = position(&KSX1001_UPPERCASE[..], bmp) {
+            return Some((0x81 + 0x27, 0xA1 + pos));
+        }
+    } else if in_range16(bmp, 0x2500, 0x254C) {
+        if let Some(pos) = position(&KSX1001_BOX[..], bmp) {
+            return Some((0x81 + 0x25, 0xA1 + pos));
+        }
+    }
+    if in_inclusive_range16(bmp, 0x2015, 0x266D)
+        || in_inclusive_range16(bmp, 0x321C, 0x33D8)
+        || in_inclusive_range16(bmp, 0xFF3C, 0xFFE5)
+        || in_inclusive_range16(bmp, 0x00A1, 0x00F7)
+        || in_inclusive_range16(bmp, 0x02C7, 0x02DD)
+    {
+        if let Some(pos) = position(&KSX1001_SYMBOLS[3..], bmp) {
+            if pos < (94 - 3) {
+                return Some((0xA1, pos + 0xA1 + 3));
+            }
+            return Some((0xA2, pos - (94 - 3) + 0xA1));
+        }
+    }
+    None
+}
+
+#[cfg(not(feature = "fast-hangul-encode"))]
+#[inline(always)]
+fn ksx1001_encode_hangul(bmp: u16, _: u16) -> (u8, u8) {
+    match KSX1001_HANGUL.binary_search(&bmp) {
+        Ok(ksx_hangul_pointer) => {
+            let ksx_hangul_lead = (ksx_hangul_pointer / 94) + (0x81 + 0x2F);
+            let ksx_hangul_trail = (ksx_hangul_pointer % 94) + 0xA1;
+            (ksx_hangul_lead as u8, ksx_hangul_trail as u8)
+        }
+        Err(_) => {
+            let (lead, cp949_trail) = if bmp < 0xC8A5 {
+                // Above KS X 1001
+                let top_pointer = cp949_top_hangul_encode(bmp) as usize;
+                let top_lead = (top_pointer / (190 - 12)) + 0x81;
+                let top_trail = top_pointer % (190 - 12);
+                (top_lead as u8, top_trail as u8)
+            } else {
+                // To the left of KS X 1001
+                let left_pointer = cp949_left_hangul_encode(bmp) as usize;
+                let left_lead = (left_pointer / (190 - 94 - 12)) + (0x81 + 0x20);
+                let left_trail = left_pointer % (190 - 94 - 12);
+                (left_lead as u8, left_trail as u8)
+            };
+            let offset = if cp949_trail >= (0x40 - 12) {
+                0x41 + 12
+            } else if cp949_trail >= (0x20 - 6) {
+                0x41 + 6
+            } else {
+                0x41
+            };
+            (lead as u8, (cp949_trail + offset) as u8)
+        }
+    }
+}
+
+#[cfg(feature = "fast-hangul-encode")]
+#[inline(always)]
+fn ksx1001_encode_hangul(_: u16, bmp_minus_hangul_start: u16) -> (u8, u8) {
+    cp949_hangul_encode(bmp_minus_hangul_start)
+}
+
+#[cfg(not(feature = "fast-hanja-encode"))]
+#[inline(always)]
+fn ksx1001_encode_hanja(bmp: u16) -> Option<(u8, u8)> {
+    if let Some(hanja_pointer) = position(&KSX1001_HANJA[..], bmp) {
+        let hanja_lead = (hanja_pointer / 94) + (0x81 + 0x49);
+        let hanja_trail = (hanja_pointer % 94) + 0xA1;
+        Some((hanja_lead as u8, hanja_trail as u8))
+    } else {
+        None
+    }
+}
+
+#[cfg(feature = "fast-hanja-encode")]
+#[inline(always)]
+fn ksx1001_encode_hanja(bmp: u16) -> Option<(u8, u8)> {
+    if bmp < 0xF900 {
+        ksx1001_unified_hangul_encode(bmp)
+    } else {
+        Some(ksx1001_compatibility_hangul_encode(bmp))
+    }
+}
+
+pub struct EucKrEncoder;
+
+impl EucKrEncoder {
+    pub fn new(encoding: &'static Encoding) -> Encoder {
+        Encoder::new(encoding, VariantEncoder::EucKr(EucKrEncoder))
+    }
+
+    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!(
+        {
+            let bmp_minus_hangul_start = bmp.wrapping_sub(0xAC00);
+            let (lead, trail) = if bmp_minus_hangul_start < (0xD7A4 - 0xAC00) {
+                // Hangul
+                ksx1001_encode_hangul(bmp, bmp_minus_hangul_start)
+            } else if in_range16(bmp, 0x33DE, 0xFF01) {
+                // Vast range that includes no other
+                // mappables except Hangul (already
+                // processed) and Hanja.
+                // Narrow the range further to Unified and
+                // Compatibility ranges of Hanja.
+                if in_range16(bmp, 0x4E00, 0x9F9D) || in_range16(bmp, 0xF900, 0xFA0C) {
+                    if let Some((hanja_lead, hanja_trail)) = ksx1001_encode_hanja(bmp) {
+                        (hanja_lead, hanja_trail)
+                    } else {
+                        return (
+                            EncoderResult::unmappable_from_bmp(bmp),
+                            source.consumed(),
+                            handle.written(),
+                        );
+                    }
+                } else {
+                    return (
+                        EncoderResult::unmappable_from_bmp(bmp),
+                        source.consumed(),
+                        handle.written(),
+                    );
+                }
+            } else if let Some((lead, trail)) = ksx1001_encode_misc(bmp) {
+                (lead as u8, trail as u8)
+            } else {
+                return (
+                    EncoderResult::unmappable_from_bmp(bmp),
+                    source.consumed(),
+                    handle.written(),
+                );
+            };
+            handle.write_two(lead, trail)
+        },
+        bmp,
+        self,
+        source,
+        handle,
+        copy_ascii_to_check_space_two,
+        check_space_two,
+        true
+    );
+}
+
+// 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_kr(bytes: &[u8], expect: &str) {
+        decode(EUC_KR, bytes, expect);
+    }
+
+    fn encode_euc_kr(string: &str, expect: &[u8]) {
+        encode(EUC_KR, string, expect);
+    }
+
+    #[test]
+    fn test_euc_kr_decode() {
+        // Empty
+        decode_euc_kr(b"", &"");
+
+        // ASCII
+        decode_euc_kr(b"\x61\x62", "\u{0061}\u{0062}");
+
+        decode_euc_kr(b"\x81\x41", "\u{AC02}");
+        decode_euc_kr(b"\x81\x5B", "\u{FFFD}\x5B");
+        decode_euc_kr(b"\xFD\xFE", "\u{8A70}");
+        decode_euc_kr(b"\xFE\x41", "\u{FFFD}\x41");
+        decode_euc_kr(b"\xFF\x41", "\u{FFFD}\x41");
+        decode_euc_kr(b"\x80\x41", "\u{FFFD}\x41");
+        decode_euc_kr(b"\xA1\xFF", "\u{FFFD}");
+        decode_euc_kr(b"\x81\xFF", "\u{FFFD}");
+    }
+
+    #[test]
+    fn test_euc_kr_encode() {
+        // Empty
+        encode_euc_kr("", b"");
+
+        // ASCII
+        encode_euc_kr("\u{0061}\u{0062}", b"\x61\x62");
+
+        encode_euc_kr("\u{AC02}", b"\x81\x41");
+        encode_euc_kr("\u{8A70}", b"\xFD\xFE");
+    }
+
+    #[test]
+    #[cfg_attr(miri, ignore)] // Miri is too slow
+    fn test_euc_kr_decode_all() {
+        let input = include_bytes!("test_data/euc_kr_in.txt");
+        let expectation = include_str!("test_data/euc_kr_in_ref.txt");
+        let (cow, had_errors) = EUC_KR.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_euc_kr_encode_all() {
+        let input = include_str!("test_data/euc_kr_out.txt");
+        let expectation = include_bytes!("test_data/euc_kr_out_ref.txt");
+        let (cow, encoding, had_errors) = EUC_KR.encode(input);
+        assert!(!had_errors, "Should not have had errors.");
+        assert_eq!(encoding, EUC_KR);
+        assert_eq!(&cow[..], &expectation[..]);
+    }
+
+    #[test]
+    fn test_euc_kr_encode_from_two_low_surrogates() {
+        let expectation = b"&#65533;&#65533;";
+        let mut output = [0u8; 40];
+        let mut encoder = EUC_KR.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);
+    }
+}