[thirdparty/u-boot.git] / tools / file2include.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Convert a file image to a C define
 *
 * Copyright (c) 2017 Heinrich Schuchardt <xypron.glpk@gmx.de>
 *
 * For testing EFI disk management we need an in memory image of
 * a disk.
 *
 * The tool file2include converts a file to a C include. The file
 * is separated into strings of 8 bytes. Only the non-zero strings
 * are written to the include. The output format has been designed
 * to maintain readability.
 *
 * As the disk image needed for testing contains mostly zeroes a high
 * compression ratio can be attained.
 */
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>

/* Size of the blocks written to the compressed file */
#define BLOCK_SIZE 8

int main(int argc, char *argv[])
{
	FILE *file;
	int ret;
	unsigned char *buf;
	size_t count, i, j;

	/* Provide usage help */
	if (argc != 2) {
		printf("Usage:\n%s FILENAME\n", argv[0]);
		return EXIT_FAILURE;
	}
	/* Open file */
	file = fopen(argv[1], "r");
	if (!file) {
		perror("fopen");
		return EXIT_FAILURE;
	}
	/* Get file length */
	ret = fseek(file, 0, SEEK_END);
	if (ret < 0) {
		perror("fseek");
		return EXIT_FAILURE;
	}
	count = ftell(file);
	if (!count) {
		fprintf(stderr, "File %s has length 0\n", argv[1]);
		return EXIT_FAILURE;
	}
	rewind(file);
	/* Read file */
	buf = malloc(count);
	if (!buf) {
		perror("calloc");
		return EXIT_FAILURE;
	}
	count = fread(buf, 1, count, file);

	/* Generate output */
	printf("/* SPDX-License-Identifier: GPL-2.0+ */\n");
	printf("/*\n");
	printf(" *  Non-zero %u byte strings of a disk image\n", BLOCK_SIZE);
	printf(" *\n");
	printf(" *  Generated with tools/file2include\n");
	printf(" */\n\n");
	printf("#define EFI_ST_DISK_IMG { 0x%08zx, { \\\n", count);

	for (i = 0; i < count; i += BLOCK_SIZE) {
		int c = 0;

		for (j = i; j < i + BLOCK_SIZE && j < count; ++j) {
			if (buf[j])
				c = 1;
		}
		if (!c)
			continue;
		printf("\t{0x%08zx, \"", i);
		for (j = i; j < i + BLOCK_SIZE && j < count; ++j)
			printf("\\x%02x", buf[j]);
		printf("\"}, /* ");
		for (j = i; j < i + BLOCK_SIZE && j < count; ++j) {
			if (buf[j] != '*' && buf[j] >= 0x20 && buf[j] <= 0x7e)
				printf("%c", buf[j]);
			else
				printf(".");
		}
		printf(" */ \\\n");
	}
	printf("\t{0, NULL} } }\n");

	/* Release resources */
	free(buf);
	ret = fclose(file);
	if (ret) {
		perror("fclose");
		return EXIT_FAILURE;
	}
	return EXIT_SUCCESS;
}
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
ac020196 HS	2	/*
	3	* Convert a file image to a C define
	4	*
	5	* Copyright (c) 2017 Heinrich Schuchardt <xypron.glpk@gmx.de>
	6	*
ac020196 HS	7	* For testing EFI disk management we need an in memory image of
	8	* a disk.
	9	*
	10	* The tool file2include converts a file to a C include. The file
	11	* is separated into strings of 8 bytes. Only the non-zero strings
	12	* are written to the include. The output format has been designed
	13	* to maintain readability.
	14	*
	15	* As the disk image needed for testing contains mostly zeroes a high
	16	* compression ratio can be attained.
	17	*/
	18	#include <stdio.h>
	19	#include <stdlib.h>
	20	#include <stdint.h>
ac020196 HS	21
	22	/* Size of the blocks written to the compressed file */
	23	#define BLOCK_SIZE 8
	24
	25	int main(int argc, char *argv[])
	26	{
	27	FILE *file;
	28	int ret;
	29	unsigned char *buf;
	30	size_t count, i, j;
	31
	32	/* Provide usage help */
	33	if (argc != 2) {
	34	printf("Usage:\n%s FILENAME\n", argv[0]);
	35	return EXIT_FAILURE;
	36	}
	37	/* Open file */
	38	file = fopen(argv[1], "r");
	39	if (!file) {
	40	perror("fopen");
	41	return EXIT_FAILURE;
	42	}
	43	/* Get file length */
	44	ret = fseek(file, 0, SEEK_END);
	45	if (ret < 0) {
	46	perror("fseek");
	47	return EXIT_FAILURE;
	48	}
	49	count = ftell(file);
	50	if (!count) {
	51	fprintf(stderr, "File %s has length 0\n", argv[1]);
	52	return EXIT_FAILURE;
	53	}
	54	rewind(file);
	55	/* Read file */
	56	buf = malloc(count);
	57	if (!buf) {
	58	perror("calloc");
	59	return EXIT_FAILURE;
	60	}
	61	count = fread(buf, 1, count, file);
	62
	63	/* Generate output */
e75ac703	64	printf("/* SPDX-License-Identifier: GPL-2.0+ */\n");
ac020196 HS	65	printf("/*\n");
	66	printf(" * Non-zero %u byte strings of a disk image\n", BLOCK_SIZE);
	67	printf(" *\n");
	68	printf(" * Generated with tools/file2include\n");
ac020196 HS	69	printf(" */\n\n");
	70	printf("#define EFI_ST_DISK_IMG { 0x%08zx, { \\\n", count);
	71
	72	for (i = 0; i < count; i += BLOCK_SIZE) {
	73	int c = 0;
	74
	75	for (j = i; j < i + BLOCK_SIZE && j < count; ++j) {
	76	if (buf[j])
	77	c = 1;
	78	}
	79	if (!c)
	80	continue;
	81	printf("\t{0x%08zx, \"", i);
	82	for (j = i; j < i + BLOCK_SIZE && j < count; ++j)
	83	printf("\\x%02x", buf[j]);
	84	printf("\"}, /* ");
	85	for (j = i; j < i + BLOCK_SIZE && j < count; ++j) {
b14619ba	86	if (buf[j] != '*' && buf[j] >= 0x20 && buf[j] <= 0x7e)
ac020196 HS	87	printf("%c", buf[j]);
	88	else
	89	printf(".");
	90	}
	91	printf(" */ \\\n");
	92	}
	93	printf("\t{0, NULL} } }\n");
	94
	95	/* Release resources */
	96	free(buf);
	97	ret = fclose(file);
	98	if (ret) {
	99	perror("fclose");
	100	return EXIT_FAILURE;
	101	}
	102	return EXIT_SUCCESS;
	103	}