keramics_compression/

zlib.rs

/* Copyright 2024-2025 Joachim Metz <joachim.metz@gmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License. You may
 * obtain a copy of the License at https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */

//! ZLIB decompression.
//!
//! Provides decompression support for ZLIB compressed data (RFC 1950).

use keramics_checksums::Adler32Context;
use keramics_core::ErrorTrace;
use keramics_core::mediator::{Mediator, MediatorReference};
use keramics_types::bytes_to_u32_be;

use super::deflate::{DeflateBitstream, DeflateContext};

/// Data header used by ZLIB compressed data.
struct ZlibDataHeader {
    /// Header size.
    header_size: usize,
}

impl ZlibDataHeader {
    /// Creates a new data header.
    pub fn new() -> Self {
        Self { header_size: 0 }
    }

    /// Reads the data header for debugging.
    pub fn debug_read_data(data: &[u8]) -> String {
        let mut string_parts: Vec<String> = Vec::new();
        string_parts.push(format!("ZlibDataHeader {{\n"));

        let compression_data: u8 = data[0];

        let compression_method: u8 = compression_data & 0x0f;
        string_parts.push(format!("    compression_method: {},\n", compression_method));

        let compression_window_bits: u8 = (compression_data >> 4) + 8;
        let compression_window_size: u32 = 1u32 << compression_window_bits;
        string_parts.push(format!(
            "    compression_window_size: {} bytes ({}),\n",
            compression_window_size, compression_window_bits,
        ));

        let flags: u8 = data[1];
        string_parts.push(format!("    check_bits: 0x{:02x},\n", flags & 0x1f));
        string_parts.push(format!(
            "    preset_dictionary_flag: {},\n",
            (flags & 0x20) >> 5
        ));
        string_parts.push(format!("    compression_level: {},\n", flags >> 6));

        if flags & 0x20 != 0 {
            let preset_dictionary_identifier: u32 = bytes_to_u32_be!(data, 0);
            string_parts.push(format!(
                "    preset_dictionary_identifier: {},\n",
                preset_dictionary_identifier
            ));
        }
        string_parts.push(format!("}}\n\n"));

        string_parts.join("")
    }

    /// Reads the data header.
    pub fn read_data(&mut self, data: &[u8]) -> Result<(), ErrorTrace> {
        if data.len() < 2 {
            return Err(keramics_core::error_trace_new!(
                "Unsupported zlib data header data size"
            ));
        }
        let compression_data: u8 = data[0];

        let compression_method: u8 = compression_data & 0x0f;

        if compression_method != 8 {
            return Err(keramics_core::error_trace_new!(format!(
                "Unsupported compression method: {}",
                compression_method
            )));
        }
        let compression_window_bits: u8 = (compression_data >> 4) + 8;
        let compression_window_size: u32 = 1u32 << compression_window_bits;

        if compression_window_size > 32768 {
            return Err(keramics_core::error_trace_new!(format!(
                "Unsupported compression window size: {}",
                compression_window_size
            )));
        }
        self.header_size = 2;

        let flags: u8 = data[1];

        if flags & 0x20 != 0 {
            if data.len() < 6 {
                return Err(keramics_core::error_trace_new!(
                    "Unsupported zlib data header data size"
                ));
            }
            self.header_size += 4;
        }
        Ok(())
    }
}

/// Context for decompressing ZLIB compressed data.
pub struct ZlibContext {
    /// Mediator.
    mediator: MediatorReference,

    /// Uncompressed data size.
    pub uncompressed_data_size: usize,
}

impl ZlibContext {
    /// Creates a new context.
    pub fn new() -> Self {
        Self {
            mediator: Mediator::current(),
            uncompressed_data_size: 0,
        }
    }

    /// Decompress data.
    pub fn decompress(
        &mut self,
        compressed_data: &[u8],
        uncompressed_data: &mut [u8],
    ) -> Result<(), ErrorTrace> {
        let mut data_header: ZlibDataHeader = ZlibDataHeader::new();

        if self.mediator.debug_output {
            let header_size: usize = if compressed_data[1] & 0x20 == 0 { 2 } else { 6 };

            self.mediator.debug_print(format!(
                "ZlibDataHeader data of size: {} at offset: 0 (0x00000000)\n",
                header_size,
            ));
            self.mediator
                .debug_print_data(&compressed_data[0..header_size], true);
            self.mediator
                .debug_print(ZlibDataHeader::debug_read_data(compressed_data));
        }
        data_header.read_data(compressed_data)?;

        let mut bitstream: DeflateBitstream =
            DeflateBitstream::new(&compressed_data, data_header.header_size);
        let mut deflate_context: DeflateContext = DeflateContext::new();
        deflate_context.decompress_bitstream(&mut bitstream, uncompressed_data)?;

        bitstream.unread_data();

        if 4 < bitstream.data_size - bitstream.data_offset {
            let stored_checksum: u32 = bytes_to_u32_be!(compressed_data, bitstream.data_offset);

            let mut adler32_context: Adler32Context = Adler32Context::new(1);
            adler32_context.update(uncompressed_data);
            let calculated_checksum: u32 = adler32_context.finalize();

            if stored_checksum != calculated_checksum {
                return Err(keramics_core::error_trace_new!(format!(
                    "Mismatch between stored: 0x{:08x} and calculated: 0x{:08x} checksums",
                    stored_checksum, calculated_checksum
                )));
            }
        }
        self.uncompressed_data_size = deflate_context.uncompressed_data_size;

        Ok(())
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    use std::fs;

    fn get_test_data() -> Vec<u8> {
        return vec![
            0x78, 0x9c, 0xdd, 0x5a, 0x4b, 0x73, 0xdc, 0xc6, 0x11, 0xbe, 0xeb, 0x57, 0x74, 0xb6,
            0x2a, 0x15, 0xb2, 0x0a, 0x5a, 0x29, 0xce, 0xdb, 0x3e, 0xd1, 0x22, 0x15, 0x6f, 0x22,
            0x2f, 0x55, 0x24, 0x15, 0xc5, 0xe5, 0xf2, 0x61, 0x16, 0x68, 0x2c, 0x26, 0x1a, 0xcc,
            0xc0, 0x33, 0x03, 0x2e, 0x91, 0x5f, 0x9f, 0xea, 0x9e, 0x07, 0x06, 0xbb, 0x4b, 0x59,
            0xa9, 0xdc, 0xe2, 0x83, 0x4b, 0x24, 0x81, 0x9e, 0x9e, 0x7e, 0x7c, 0xfd, 0x75, 0x37,
            0x5e, 0xc0, 0x2f, 0xfd, 0x77, 0x35, 0x88, 0xba, 0x43, 0x78, 0x27, 0x6b, 0xd4, 0x0e,
            0x5f, 0x7c, 0xe6, 0xc9, 0x7f, 0xa0, 0x75, 0xd2, 0x68, 0xf8, 0x6a, 0xfd, 0xba, 0x82,
            0xbf, 0x09, 0x3d, 0x0a, 0x3b, 0xc1, 0x57, 0xaf, 0x5f, 0xff, 0xfe, 0xd9, 0x97, 0x3a,
            0xef, 0x87, 0xaf, 0x5f, 0xbd, 0x3a, 0x1c, 0x0e, 0x6b, 0xc1, 0xc7, 0xac, 0x8d, 0xdd,
            0xbf, 0x52, 0xe1, 0x28, 0xf7, 0xea, 0x05, 0xbd, 0xf8, 0x70, 0x73, 0xf7, 0xfd, 0x3d,
            0x5c, 0x6d, 0xaf, 0xe1, 0xcd, 0xed, 0xf6, 0x7a, 0xf3, 0xb0, 0xb9, 0xdd, 0xde, 0xc3,
            0xdb, 0xdb, 0x3b, 0xf8, 0x70, 0x7f, 0x53, 0xc1, 0xdd, 0xcd, 0xfb, 0xbb, 0xdb, 0xeb,
            0x0f, 0x6f, 0xe8, 0xd7, 0x15, 0x3f, 0x75, 0xbd, 0xb9, 0x7f, 0xb8, 0xdb, 0x7c, 0xfb,
            0x81, 0x7e, 0xc3, 0x02, 0x7e, 0xbb, 0x86, 0x6b, 0x6c, 0xa5, 0x96, 0x5e, 0x1a, 0xed,
            0xd6, 0x2f, 0xa2, 0x36, 0xab, 0x78, 0xa3, 0x15, 0xb8, 0x4e, 0x28, 0x05, 0x3d, 0x0a,
            0x0d, 0xbe, 0x43, 0xf0, 0x68, 0x7b, 0x07, 0x42, 0x37, 0x50, 0x1b, 0xdd, 0x84, 0xb7,
            0xa0, 0x35, 0x16, 0x46, 0x87, 0x15, 0x58, 0x1c, 0xac, 0x69, 0xc6, 0x9a, 0x7e, 0x5d,
            0x45, 0x51, 0xf4, 0x6c, 0x23, 0x9d, 0xb7, 0x72, 0x37, 0xd2, 0xef, 0x41, 0x38, 0x68,
            0xe8, 0x48, 0x6c, 0x60, 0x37, 0xc1, 0x3d, 0xd6, 0x41, 0xc8, 0x6f, 0xc1, 0x77, 0xd6,
            0x8c, 0xfb, 0x0e, 0xfe, 0x02, 0xa6, 0x05, 0xdf, 0x49, 0x07, 0x8d, 0xa9, 0xc7, 0x1e,
            0xb5, 0x3f, 0xd6, 0xcb, 0xd8, 0x13, 0xc5, 0x6a, 0x33, 0x4c, 0x56, 0xee, 0x3b, 0x0f,
            0xe6, 0xa0, 0xd1, 0x82, 0xb1, 0x80, 0xda, 0x4b, 0x3f, 0x81, 0x18, 0x7d, 0x67, 0xac,
            0xfc, 0x37, 0x9f, 0x17, 0xe5, 0x9c, 0x7b, 0xc3, 0x77, 0xc2, 0x83, 0x74, 0xb0, 0xb7,
            0x42, 0x7b, 0xa9, 0xf7, 0xfc, 0x50, 0xb4, 0x43, 0xa1, 0x00, 0xee, 0x85, 0x82, 0x1b,
            0x16, 0x7d, 0xa2, 0xc4, 0xa8, 0xe9, 0x82, 0xac, 0x3d, 0x82, 0xa8, 0x59, 0x4a, 0xd2,
            0x42, 0x37, 0x20, 0x94, 0x8a, 0x62, 0x8c, 0xef, 0x30, 0x2a, 0x28, 0xd1, 0x85, 0xa3,
            0x6b, 0xa3, 0xbd, 0x35, 0xaa, 0x02, 0x61, 0x31, 0xfd, 0xa0, 0x58, 0xe9, 0x8a, 0x6e,
            0x43, 0xbf, 0x1d, 0x75, 0x83, 0x16, 0x6a, 0xd3, 0xf7, 0x46, 0x47, 0x49, 0xf1, 0x41,
            0x38, 0x48, 0xdf, 0x05, 0x39, 0xe1, 0xc0, 0x35, 0xbc, 0x35, 0x96, 0xf5, 0x18, 0x46,
            0x3b, 0x18, 0x87, 0x6e, 0xb6, 0x6a, 0x76, 0x78, 0xf2, 0xd1, 0x2a, 0x4a, 0x59, 0xf1,
            0x55, 0x1c, 0x5c, 0xc8, 0xcb, 0xf0, 0xaa, 0x39, 0xa0, 0xad, 0xa0, 0x91, 0x16, 0x6b,
            0x4f, 0x4a, 0x48, 0x1d, 0xfe, 0x5d, 0x81, 0x37, 0x50, 0x8b, 0xd1, 0x21, 0x3d, 0x17,
            0xa5, 0x84, 0x3f, 0xb1, 0x05, 0x2c, 0xf4, 0x42, 0x8b, 0x3d, 0x92, 0xf3, 0xe8, 0x5c,
            0x37, 0xd6, 0x5d, 0x54, 0xac, 0x82, 0x43, 0x87, 0x7c, 0xfd, 0xdd, 0x14, 0xb4, 0x17,
            0x2c, 0xbb, 0xb4, 0xcc, 0x41, 0x52, 0x34, 0x19, 0x0b, 0x17, 0x52, 0x5e, 0x06, 0xf7,
            0xb8, 0x4e, 0x0e, 0x24, 0xa9, 0x95, 0xad, 0x9f, 0x60, 0x40, 0x5b, 0x93, 0xe8, 0x8b,
            0x3f, 0xbc, 0xfe, 0xf5, 0x25, 0x1f, 0x67, 0x2c, 0x46, 0xc3, 0x27, 0x41, 0xa3, 0x77,
            0x5e, 0xe8, 0x86, 0x7c, 0xe0, 0x3a, 0x61, 0xd1, 0x25, 0x89, 0xf2, 0x12, 0x76, 0xa8,
            0xb1, 0x95, 0xb5, 0x14, 0x6a, 0x29, 0xbd, 0xd0, 0x73, 0x76, 0xf9, 0x0f, 0x66, 0x5c,
            0xc1, 0x85, 0xb1, 0xfc, 0x2f, 0xbb, 0xba, 0x2c, 0xbd, 0x2e, 0x34, 0xdb, 0xe4, 0x51,
            0x36, 0x23, 0xc9, 0xb2, 0x50, 0xc6, 0x47, 0x14, 0x80, 0x4f, 0x68, 0x6b, 0xe9, 0x48,
            0x91, 0x01, 0x6d, 0x2f, 0x9d, 0xe3, 0x80, 0xe7, 0x38, 0x0b, 0x49, 0xc0, 0x6e, 0x39,
            0x09, 0xb5, 0x7b, 0x33, 0xda, 0x1a, 0x57, 0x94, 0x5e, 0xfd, 0x71, 0xa4, 0x0d, 0x16,
            0x5b, 0xb4, 0x16, 0x9b, 0xf0, 0xd7, 0x96, 0x2d, 0xfe, 0x89, 0x8e, 0xe8, 0x4d, 0x23,
            0x5b, 0x59, 0x0b, 0xce, 0xaa, 0xe4, 0x60, 0xa9, 0x6b, 0x35, 0xb2, 0x29, 0x76, 0xa3,
            0x07, 0x6d, 0x3c, 0x28, 0xd9, 0x4b, 0x3a, 0xdd, 0x1b, 0x70, 0xa6, 0xf5, 0x07, 0x0a,
            0x2f, 0xc7, 0x07, 0x42, 0x6d, 0x1a, 0xac, 0x72, 0xee, 0xb1, 0xa0, 0x28, 0x26, 0x3c,
            0x50, 0xa5, 0xfc, 0x6f, 0xe5, 0x7e, 0xb4, 0xfc, 0x77, 0x68, 0xa5, 0xc2, 0x02, 0x3e,
            0x6e, 0x77, 0xff, 0xc2, 0xda, 0x9f, 0xaa, 0x2e, 0xf4, 0x14, 0x7e, 0x67, 0xd1, 0x8d,
            0x8a, 0xf3, 0xa3, 0xb5, 0xa6, 0x87, 0x1e, 0xeb, 0x4e, 0x68, 0x59, 0x8b, 0x94, 0x20,
            0xde, 0x0a, 0xed, 0xe8, 0x49, 0x91, 0x02, 0x8a, 0x7f, 0xa3, 0xe2, 0x8f, 0x2d, 0x08,
            0x08, 0xe6, 0x61, 0x71, 0xd5, 0xf2, 0x82, 0x51, 0xc6, 0xd1, 0x35, 0x6b, 0xd3, 0x0f,
            0x92, 0x12, 0xca, 0xb0, 0x72, 0xf1, 0x9a, 0x7b, 0xd4, 0x68, 0x05, 0x3d, 0xb2, 0xb8,
            0x70, 0x89, 0x5e, 0xb5, 0xd1, 0x8f, 0x01, 0xbd, 0x1d, 0xc9, 0x09, 0xb9, 0xdb, 0x63,
            0x23, 0x05, 0xf8, 0x69, 0x28, 0xaf, 0xfd, 0xd1, 0xd8, 0x4f, 0x27, 0xa0, 0x70, 0x30,
            0xf6, 0x13, 0x6b, 0xcc, 0x38, 0x44, 0x91, 0x36, 0xa7, 0x80, 0xd4, 0xe9, 0x1a, 0x39,
            0x01, 0x82, 0xe9, 0xe2, 0xb5, 0x7a, 0xd1, 0x20, 0x88, 0x47, 0x21, 0x95, 0xd8, 0xa9,
            0x94, 0xff, 0x05, 0x2e, 0x55, 0x84, 0xa6, 0x14, 0x80, 0xb5, 0x88, 0xa1, 0x24, 0x32,
            0x2e, 0x24, 0x74, 0xd3, 0xc6, 0xcb, 0x1a, 0x33, 0xbc, 0x05, 0x4b, 0x61, 0x43, 0x67,
            0x13, 0xac, 0x78, 0x4f, 0xb5, 0x85, 0x2d, 0x94, 0xb4, 0x8d, 0x22, 0x2e, 0x84, 0x06,
            0x7c, 0x12, 0xfd, 0xa0, 0x90, 0x5e, 0x1c, 0xac, 0x79, 0x94, 0xf1, 0x45, 0x7a, 0xf2,
            0x6a, 0x18, 0x50, 0x37, 0xf2, 0x09, 0x76, 0xa8, 0xcc, 0xe1, 0x72, 0xb6, 0xc2, 0x35,
            0x5a, 0xf9, 0x28, 0xbc, 0x7c, 0x44, 0x20, 0x83, 0xb8, 0xd5, 0x71, 0x04, 0xd0, 0x19,
            0xe7, 0x6d, 0x10, 0x6f, 0x1f, 0x25, 0x05, 0x1b, 0x24, 0xc5, 0x77, 0xc2, 0x91, 0xf3,
            0x34, 0xa7, 0x62, 0x43, 0x67, 0x50, 0xf4, 0x5b, 0xd3, 0x07, 0xac, 0xa2, 0xa3, 0xd8,
            0x5d, 0x94, 0x0b, 0x87, 0x4e, 0xd6, 0x5d, 0x01, 0x06, 0xd8, 0x48, 0x6f, 0x2c, 0xa5,
            0xbb, 0xc5, 0x47, 0xc9, 0xae, 0xa4, 0x28, 0xd6, 0xc6, 0xc7, 0x3c, 0x01, 0x54, 0x62,
            0x67, 0x6c, 0xfa, 0xc9, 0xd8, 0xe4, 0xe6, 0x32, 0x9b, 0xa2, 0x30, 0xaa, 0x72, 0xe8,
            0x50, 0x7b, 0xb6, 0xbe, 0x80, 0x43, 0x67, 0x14, 0x27, 0x05, 0x18, 0x2b, 0xf7, 0x52,
            0x0b, 0x75, 0xc6, 0xe7, 0xa7, 0x78, 0x9c, 0x70, 0xaa, 0x5d, 0xa4, 0x7f, 0x05, 0xc7,
            0xe6, 0x8b, 0xd6, 0xa3, 0x68, 0x8e, 0xbe, 0x63, 0xf1, 0xb1, 0x6a, 0x58, 0xec, 0x85,
            0xcc, 0xf9, 0x89, 0x83, 0xb0, 0x1c, 0x29, 0x64, 0x17, 0xbe, 0x46, 0x8f, 0x16, 0xd5,
            0x04, 0x4a, 0xea, 0x4f, 0x6c, 0xb8, 0x9d, 0xd4, 0x1c, 0x27, 0x5a, 0xf4, 0x78, 0x99,
            0x9c, 0x2e, 0xb5, 0x47, 0xdb, 0x8a, 0x9a, 0x8b, 0x44, 0x55, 0xd4, 0xc8, 0x6c, 0xd4,
            0x13, 0xa5, 0xc8, 0x3a, 0x68, 0xda, 0xd9, 0xeb, 0x6f, 0x08, 0xca, 0x63, 0x8d, 0x3f,
            0xeb, 0xf1, 0xe3, 0x1c, 0xc8, 0x29, 0x5b, 0x9c, 0x97, 0x0d, 0x18, 0x13, 0x2e, 0xd5,
            0xd2, 0xac, 0x07, 0x09, 0x5b, 0xf8, 0x84, 0x63, 0xb8, 0x89, 0x4c, 0x24, 0x49, 0x32,
            0xc1, 0x36, 0xfc, 0x96, 0xb1, 0xcf, 0x2a, 0x5f, 0x15, 0x49, 0xe1, 0x09, 0xf5, 0x8d,
            0x16, 0x4a, 0x25, 0xd8, 0x76, 0xe3, 0xae, 0x97, 0x3e, 0x82, 0x47, 0xe2, 0x1d, 0x1c,
            0x5d, 0xac, 0x39, 0xab, 0x17, 0x53, 0x81, 0x0f, 0x62, 0x1c, 0x3f, 0xa1, 0x15, 0xc9,
            0xcb, 0x5c, 0xee, 0x3e, 0x5b, 0x2d, 0x4a, 0xa2, 0x42, 0xa8, 0xcc, 0xc7, 0x53, 0xbc,
            0xef, 0xb0, 0x13, 0xaa, 0x05, 0xd3, 0x3e, 0x4f, 0x5e, 0xbe, 0xac, 0xda, 0xc3, 0x2a,
            0xdf, 0x69, 0x15, 0x65, 0x85, 0x7a, 0x9f, 0x61, 0xd9, 0xb4, 0x80, 0x0a, 0x6b, 0x6f,
            0x8d, 0x96, 0x75, 0x45, 0x5e, 0xd8, 0x09, 0xc5, 0x71, 0x74, 0xb0, 0xf4, 0x9e, 0x66,
            0xf2, 0x31, 0xea, 0x68, 0x7d, 0xa0, 0x2c, 0x28, 0x8d, 0x8e, 0xb3, 0xa1, 0xc8, 0x4e,
            0xde, 0xcd, 0xc9, 0xc2, 0xf6, 0x77, 0xd5, 0x67, 0x4b, 0x51, 0xc6, 0xae, 0xf2, 0x0c,
            0xa3, 0x0b, 0x9d, 0xa0, 0x17, 0x52, 0xd1, 0xcb, 0x4a, 0x3a, 0xef, 0xaa, 0xb2, 0x64,
            0x65, 0x2a, 0xe4, 0x26, 0xe7, 0xb1, 0x77, 0x25, 0x84, 0x4b, 0xe7, 0x46, 0xa4, 0x12,
            0x52, 0x73, 0x8d, 0x8c, 0x4f, 0x04, 0xf7, 0x53, 0xe5, 0x0b, 0x6c, 0x25, 0x73, 0xad,
            0xd2, 0xe8, 0x55, 0x01, 0x23, 0x8b, 0x28, 0x28, 0xac, 0x4d, 0x76, 0x6b, 0xa4, 0xab,
            0x47, 0xc7, 0x55, 0x9e, 0x4f, 0xec, 0x19, 0x2f, 0x23, 0x8d, 0xfc, 0xc8, 0x88, 0x37,
            0x97, 0x26, 0x7c, 0x4a, 0x46, 0x58, 0xde, 0x35, 0xc5, 0x63, 0x6d, 0xb4, 0x1b, 0x64,
            0x3d, 0x9a, 0xd1, 0xa9, 0x09, 0x7a, 0x61, 0x3f, 0x11, 0xf4, 0xd9, 0x99, 0x1d, 0x25,
            0xca, 0x85, 0x4e, 0xee, 0x35, 0x63, 0xbf, 0xd4, 0xec, 0x23, 0x36, 0xec, 0xd9, 0x48,
            0x24, 0xb0, 0x5a, 0x6d, 0x8d, 0x07, 0x01, 0x65, 0xae, 0xae, 0x57, 0xa7, 0x29, 0x7c,
            0xc4, 0xaf, 0xf3, 0xb5, 0x53, 0x06, 0xfe, 0x22, 0xe5, 0x29, 0x0d, 0x48, 0xf8, 0xd8,
            0x1f, 0x1d, 0x0a, 0x9d, 0x70, 0xb0, 0x43, 0xd4, 0x60, 0xb1, 0x46, 0x46, 0xf2, 0xdd,
            0xb4, 0x38, 0x67, 0x4e, 0x42, 0x87, 0x3f, 0x8f, 0xa8, 0xbd, 0xa2, 0x63, 0x6b, 0x63,
            0x07, 0x13, 0xca, 0x35, 0x11, 0xde, 0x22, 0xfd, 0x02, 0x10, 0x7d, 0xb5, 0x86, 0xbf,
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            0x17, 0x9f, 0xdd, 0x89, 0x27, 0xad, 0xe8, 0xda, 0xca, 0x84, 0x80, 0xdd, 0x1b, 0xd3,
            0x1c, 0xa4, 0x2a, 0x67, 0x87, 0x9f, 0xc0, 0x79, 0x33, 0x0c, 0x82, 0xa6, 0x84, 0xc4,
            0x09, 0x46, 0x52, 0xbc, 0x15, 0x52, 0x8d, 0x36, 0x54, 0x23, 0xa1, 0xda, 0x51, 0xcf,
            0xe4, 0x86, 0x8b, 0xe0, 0x99, 0x2f, 0x41, 0x68, 0x0b, 0x40, 0xc1, 0x5b, 0xda, 0x23,
            0x1c, 0x8c, 0xee, 0xb2, 0xe2, 0x38, 0x24, 0x82, 0x7e, 0x3c, 0x88, 0x8b, 0x32, 0xf2,
            0x30, 0x5d, 0x34, 0x8f, 0x92, 0x97, 0xa4, 0x6d, 0xfc, 0x7c, 0xc3, 0x39, 0x19, 0x8d,
            0x90, 0x3e, 0x6e, 0x88, 0xe2, 0x43, 0x06, 0xfc, 0x65, 0x0d, 0x57, 0x35, 0xd5, 0x04,
            0xb2, 0x42, 0x42, 0x5e, 0x3a, 0xf9, 0x6a, 0x2e, 0xd4, 0x45, 0x52, 0x7c, 0xec, 0x88,
            0xba, 0x2f, 0xd3, 0xf5, 0x78, 0x59, 0xf8, 0xd9, 0x75, 0x5b, 0x62, 0xa1, 0x75, 0x67,
            0x4c, 0x98, 0x82, 0xf2, 0xa4, 0x73, 0xb1, 0x6c, 0xe7, 0x99, 0x2b, 0x08, 0x68, 0x91,
            0xf1, 0xa4, 0x02, 0xc1, 0x1a, 0x0a, 0x5d, 0x63, 0xb8, 0xc4, 0x10, 0xc6, 0xa0, 0x11,
            0xfd, 0x26, 0x8e, 0x3b, 0xec, 0x35, 0x7d, 0x5a, 0x32, 0x0f, 0xc4, 0x82, 0x59, 0x55,
            0xd2, 0x1d, 0xcc, 0x4e, 0xc5, 0x29, 0x14, 0xf3, 0x96, 0x57, 0x04, 0x3b, 0xc4, 0x7c,
            0xc3, 0xaa, 0x45, 0x3a, 0x2e, 0x52, 0xb1, 0xbf, 0x92, 0x09, 0x41, 0x73, 0x83, 0xf1,
            0x9d, 0x39, 0x50, 0x27, 0x14, 0x5a, 0xc9, 0x6c, 0x30, 0xb6, 0x67, 0x21, 0x78, 0xbe,
            0x1f, 0x7f, 0xd1, 0xa2, 0x55, 0xb1, 0x0d, 0xc9, 0x9c, 0x3b, 0xae, 0x45, 0x78, 0x88,
            0x1b, 0x7f, 0x4d, 0x40, 0x3a, 0xc3, 0x28, 0xeb, 0xcb, 0x4c, 0x67, 0xde, 0xa2, 0xcc,
            0x88, 0x3e, 0x4f, 0x8a, 0x8a, 0x30, 0x88, 0x33, 0x61, 0xea, 0x99, 0x64, 0x1b, 0xf0,
            0x99, 0x12, 0x3e, 0xe4, 0x3b, 0xdb, 0xa6, 0xcd, 0xb6, 0x69, 0xb0, 0x45, 0xdd, 0x84,
            0x37, 0x3a, 0xa3, 0x9a, 0x33, 0xa3, 0x73, 0x61, 0x7b, 0x46, 0xa2, 0x44, 0xae, 0xb3,
            0x15, 0xe7, 0x74, 0x1e, 0xad, 0x9d, 0xb7, 0x65, 0x71, 0x72, 0x2c, 0x9c, 0x43, 0x4b,
            0xe9, 0x13, 0x87, 0xa8, 0xd5, 0xe9, 0xdc, 0x78, 0x37, 0x45, 0xb2, 0x31, 0x5f, 0x68,
            0x22, 0x0b, 0xcc, 0x36, 0xcd, 0x64, 0xfe, 0x50, 0x44, 0x63, 0x41, 0x1b, 0xb3, 0x2e,
            0x21, 0x80, 0x6f, 0xb6, 0xd7, 0x54, 0x57, 0xcf, 0x7d, 0x06, 0xc7, 0x7f, 0xbf, 0x7a,
            0xff, 0xfe, 0x66, 0x7b, 0xbd, 0xf9, 0xe7, 0xd7, 0xe4, 0x42, 0x9e, 0x16, 0x0c, 0x83,
            0x9a, 0xe2, 0xe7, 0x0b, 0xe5, 0xa7, 0x7b, 0xf4, 0x37, 0x56, 0xe5, 0x90, 0x77, 0x49,
            0xf4, 0x79, 0xdd, 0x17, 0xbe, 0x50, 0xc5, 0xcf, 0x28, 0x96, 0xd3, 0x84, 0x44, 0xab,
            0x8d, 0x54, 0x68, 0x07, 0x45, 0x68, 0x1d, 0xba, 0xb9, 0x6a, 0xee, 0xe4, 0x5b, 0x89,
            0xaa, 0x71, 0x80, 0xba, 0x56, 0xc6, 0x05, 0xd0, 0xdf, 0xd1, 0x96, 0x12, 0xbd, 0x83,
            0xd5, 0x8f, 0x3f, 0xad, 0x32, 0xf0, 0xf1, 0x64, 0x22, 0x56, 0xbb, 0x29, 0x05, 0x13,
            0xa3, 0x6a, 0xec, 0xfa, 0x8a, 0x4e, 0x7a, 0x0d, 0x17, 0xd7, 0x46, 0xff, 0x26, 0x7f,
            0x2f, 0x50, 0xe4, 0x68, 0x12, 0xfe, 0xab, 0x4b, 0xe0, 0x6e, 0x9d, 0xdb, 0x54, 0xd7,
            0x99, 0x51, 0x35, 0x44, 0xf1, 0xb3, 0x1e, 0xb1, 0x3b, 0x28, 0xca, 0x76, 0xb1, 0x9b,
            0xa5, 0x5c, 0x71, 0x93, 0xf6, 0xe2, 0x29, 0x2f, 0x42, 0xb9, 0xa9, 0x0f, 0x0a, 0xac,
            0xe1, 0x23, 0x82, 0x50, 0x8e, 0x16, 0x54, 0xe1, 0xe9, 0x38, 0x27, 0x4d, 0x28, 0xce,
            0xcf, 0x86, 0xb8, 0x71, 0x8e, 0x19, 0x6b, 0x68, 0xbb, 0x98, 0x66, 0x0e, 0xa9, 0x18,
            0xa7, 0xd5, 0xea, 0x0e, 0xe7, 0x4f, 0x56, 0x78, 0x43, 0x9a, 0x34, 0x71, 0xf4, 0xe2,
            0x6a, 0xb0, 0x92, 0x07, 0xd7, 0x84, 0xc1, 0x2b, 0xaa, 0x15, 0xcb, 0xcd, 0x67, 0xfc,
            0xf8, 0x85, 0xd4, 0x44, 0xe1, 0x64, 0xde, 0xc7, 0x47, 0xcb, 0xa5, 0xbd, 0x6b, 0x1e,
            0xcf, 0xcc, 0x43, 0x0e, 0x61, 0xeb, 0x8e, 0x36, 0xd6, 0x21, 0x18, 0xe6, 0x65, 0xe2,
            0x8f, 0xd3, 0x34, 0x4d, 0x3f, 0xc1, 0x8f, 0xac, 0xb7, 0x69, 0x8f, 0xb7, 0xac, 0x3f,
            0xf1, 0xe3, 0x31, 0x48, 0x9a, 0xa2, 0x67, 0x5a, 0x86, 0x4f, 0x55, 0x7e, 0x10, 0x0a,
            0x17, 0xf4, 0x40, 0xfe, 0xe6, 0xf2, 0xf2, 0x1b, 0x12, 0x91, 0xfa, 0x11, 0x02, 0x82,
            0x50, 0xbe, 0xe2, 0xf8, 0x3c, 0xd1, 0x78, 0xa9, 0x63, 0x1b, 0xca, 0xd0, 0x98, 0x23,
            0x2a, 0x53, 0x9c, 0xa2, 0xeb, 0x37, 0x3b, 0x9e, 0x96, 0x89, 0xc5, 0xc8, 0x2e, 0x05,
            0xb2, 0xf0, 0x29, 0xdc, 0x7f, 0xe9, 0x93, 0xd3, 0x77, 0x9b, 0x37, 0x37, 0xdb, 0xfb,
            0x9b, 0x97, 0x5f, 0xad, 0x5f, 0xf3, 0x2b, 0x5f, 0xc2, 0xd0, 0x9f, 0xe3, 0x1e, 0xf1,
            0x9b, 0xb3, 0x17, 0xe5, 0x94, 0x72, 0x61, 0xaf, 0xa4, 0x1e, 0x7d, 0xc2, 0x50, 0x3c,
            0xf0, 0x1c, 0x03, 0xff, 0x1f, 0xe9, 0x77, 0x22, 0xde, 0x6c, 0xb6, 0x7b, 0xc4, 0x85,
            0x0a, 0x29, 0xc8, 0x99, 0xd6, 0xb4, 0xb2, 0x06, 0x25, 0xf4, 0x7e, 0x14, 0x7b, 0x84,
            0xbd, 0x79, 0x44, 0xab, 0x8f, 0xbf, 0xec, 0x8b, 0xd3, 0x92, 0x99, 0xaf, 0xbb, 0xd3,
            0x7b, 0xad, 0x5f, 0xfc, 0x07, 0x3a, 0x27, 0xec, 0x70,
        ];
    }

    #[test]
    fn test_read_data_header() -> Result<(), ErrorTrace> {
        let mut data_header: ZlibDataHeader = ZlibDataHeader::new();

        let test_data: Vec<u8> = get_test_data();
        data_header.read_data(&test_data)?;

        assert_eq!(data_header.header_size, 2);

        Ok(())
    }

    #[test]
    fn test_decompress() -> Result<(), ErrorTrace> {
        let mut test_context: ZlibContext = ZlibContext::new();

        let test_data: Vec<u8> = get_test_data();
        let mut uncompressed_data: Vec<u8> = vec![0; 11358];
        test_context.decompress(&test_data, &mut uncompressed_data)?;
        assert_eq!(test_context.uncompressed_data_size, 11358);

        let expected_data: Vec<u8> = match fs::read("../LICENSE") {
            Ok(data) => data,
            Err(error) => {
                return Err(keramics_core::error_trace_new_with_error!(
                    "Unable read test reference file",
                    error
                ));
            }
        };
        assert_eq!(&uncompressed_data, &expected_data);

        Ok(())
    }
}