isa-l/igzip/igzip_inflate_test.c

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#include <stdint.h>
#include <stdio.h>
#include <zlib.h>
#include "igzip_inflate_ref.h"
#include "huff_codes.h"

/*Don't use file larger memory can support because compression and decompression
 * are done in a stateless manner. */
#define MAX_INPUT_FILE_SIZE 2L*1024L*1024L*1024L

int test(uint8_t * compressed_stream, uint64_t * compressed_length,
	 uint8_t * uncompressed_stream, int uncompressed_length,
	 uint8_t * uncompressed_test_stream)
{
	struct inflate_state state;
	int ret;
	ret =
	    compress2(compressed_stream, compressed_length, uncompressed_stream,
		      uncompressed_length, 9);
	if (ret) {
		printf("Failed compressing input with exit code %d", ret);
		return ret;
	}

	igzip_inflate_init(&state, compressed_stream + 2, *compressed_length - 2,
			   uncompressed_test_stream, uncompressed_length);
	ret = igzip_inflate(&state);

	switch (ret) {
	case 0:
		break;
	case END_OF_INPUT:
		printf(" did not decompress all input\n");
		return END_OF_INPUT;
		break;
	case INVALID_BLOCK_HEADER:
		printf("  invalid header\n");
		return INVALID_BLOCK_HEADER;
		break;
	case INVALID_SYMBOL:
		printf(" invalid symbol\n");
		return INVALID_SYMBOL;
		break;
	case OUT_BUFFER_OVERFLOW:
		printf(" out buffer overflow\n");
		return OUT_BUFFER_OVERFLOW;
		break;
	case INVALID_NON_COMPRESSED_BLOCK_LENGTH:
		printf("Invalid length bits in non-compressed block\n");
		return INVALID_NON_COMPRESSED_BLOCK_LENGTH;
		break;
	case INVALID_LOOK_BACK_DISTANCE:
		printf("Invalid lookback distance");
		return INVALID_LOOK_BACK_DISTANCE;
		break;
	default:
		printf(" error\n");
		return -1;
		break;
	}

	if (state.out_buffer.total_out != uncompressed_length) {
		printf("incorrect amount of data was decompressed from compressed data\n");
		printf("%d decompressed of %d compressed", state.out_buffer.total_out,
		       uncompressed_length);
		return -1;
	}
	if (memcmp(uncompressed_stream, uncompressed_test_stream, uncompressed_length)) {
		printf(" decompressed data is not the same as the compressed data\n");
		return -1;
	}
	return 0;
}

int main(int argc, char **argv)
{
	int i, j, ret = 0, fin_ret = 0;
	FILE *file;
	uint64_t compressed_length, file_length, uncompressed_length;
	uint8_t *uncompressed_stream, *compressed_stream, *uncompressed_test_stream;

	if (argc == 1)
		printf("Error, no input file\n");

	for (i = 1; i < argc; i++) {
		file = fopen(argv[i], "r");
		if (file == NULL) {
			printf("Error opening file %s\n", argv[i]);
			return 1;
		} else
			printf("Starting file %s", argv[i]);

		fseek(file, 0, SEEK_END);
		file_length = ftell(file);
		fseek(file, 0, SEEK_SET);
		file_length -= ftell(file);
		if (file_length > MAX_INPUT_FILE_SIZE) {
			printf("File too large to run on this test\n");
			fclose(file);
			continue;
		}
		compressed_length = compressBound(file_length);
		uncompressed_stream = malloc(file_length);
		compressed_stream = malloc(compressed_length);
		uncompressed_test_stream = malloc(file_length);

		if (uncompressed_stream == NULL) {
			printf("Failed to allocate memory\n");
			exit(0);
		}

		if (compressed_stream == NULL) {
			printf("Failed to allocate memory\n");
			exit(0);
		}

		if (uncompressed_test_stream == NULL) {
			printf("Failed to allocate memory\n");
			exit(0);
		}

		uncompressed_length = fread(uncompressed_stream, 1, file_length, file);
		ret =
		    test(compressed_stream, &compressed_length, uncompressed_stream,
			 uncompressed_length, uncompressed_test_stream);
		if (ret) {
			for (j = 0; j < compressed_length; j++) {
				if ((j & 31) == 0)
					printf("\n");
				else
					printf(" ");
				printf("0x%02x,", compressed_stream[j]);

			}
			printf("\n");

		}

		fclose(file);
		free(compressed_stream);
		free(uncompressed_stream);
		free(uncompressed_test_stream);

		if (ret) {
			printf(" ... Fail with exit code %d\n", ret);
			return ret;
		} else
			printf(" ... Pass\n");

		fin_ret |= ret;
	}
	return fin_ret;
}