103 lines
2.3 KiB
C
103 lines
2.3 KiB
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;
|
|
}
|