mirror of
https://github.com/RIOT-OS/RIOT.git
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96 lines
3.6 KiB
C
96 lines
3.6 KiB
C
/*
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* Copyright (C) 2021 Inria
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup tests
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* @{
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*
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* @file
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* @brief lz4 package test application
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*
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* This application is adapted to RIOT from
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* https://github.com/lz4/lz4/blob/dev/examples/simple_buffer.c
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*
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* @author Alexandre Abadie <alexandre.abadie@inria.fr>
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*
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* @}
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*/
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#include <stdio.h>
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#include <string.h>
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#include "lz4.h"
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#define BUFFER_SIZE 1024
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static char compressed_data[BUFFER_SIZE];
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static char regen_buffer[BUFFER_SIZE];
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static const char* const src = "Lorem ipsum dolor sit amet, consectetur "
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"adipiscing elit, sed do eiusmod tempor "
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"incididunt ut labore et dolore magna aliqua. "
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"Nisl vel pretium lectus quam id leo. Volutpat "
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"sed cras ornare arcu dui vivamus arcu felis "
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"bibendum. Velit scelerisque in dictum non "
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"consectetur a erat nam. Pretium viverra "
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"suspendisse potenti nullam ac tortor vitae "
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"purus faucibus. Tristique et egestas quis "
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"ipsum suspendisse. At imperdiet dui accumsan "
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"sit amet nulla facilisi. Pulvinar neque "
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"laoreet suspendisse interdum consectetur "
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"libero. Vulputate sapien nec sagittis aliquam "
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"malesuada bibendum arcu vitae. Sed adipiscing "
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"diam donec adipiscing tristique risus nec. "
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"Venenatis tellus in metus vulputate eu "
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"scelerisque. Id faucibus nisl tincidunt eget "
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"nullam non nisi est. Integer feugiat "
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"scelerisque varus morbi enim. Est sit amet "
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"facilisis magna etiam. Venenatis cras sed "
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"felis eget velit aliquet sagittis.";
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int main(void)
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{
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/* Compression */
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const unsigned src_size = strlen(src) + 1;
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const int compressed_data_size = LZ4_compress_default(src, compressed_data,
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src_size, BUFFER_SIZE);
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compressed_data[compressed_data_size] = 0;
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/* Check return_value to determine what happened. */
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if (compressed_data_size <= 0) {
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puts("Compression failed.");
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return -1;
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}
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unsigned compression_ratio = ((unsigned)compressed_data_size * 10000) / src_size;
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printf("Data compressed with success (ratio: %u.%u)\n",
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compression_ratio / 10000, (compression_ratio / 100) % 100);
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/* Decompression */
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const int decompressed_size = LZ4_decompress_safe(compressed_data, regen_buffer,
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compressed_data_size, src_size);
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if (decompressed_size < 0) {
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puts("Decompression failed.");
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return -1;
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}
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puts("Data decompressed with success!");
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if ((unsigned)decompressed_size != src_size) {
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puts("Decompressed data is different from original");
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return -1;
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}
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/* Validation */
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if (memcmp(src, regen_buffer, src_size) != 0) {
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puts("Validation failed");
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return -1;
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}
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printf("Validation done, decompressed string:\n%s\n", regen_buffer);
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return 0;
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}
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