1 // SPDX-License-Identifier: GPL-2.0+
3 * Convert a file image to a C define
5 * Copyright (c) 2017 Heinrich Schuchardt <xypron.glpk@gmx.de>
7 * For testing EFI disk management we need an in memory image of
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.
15 * As the disk image needed for testing contains mostly zeroes a high
16 * compression ratio can be attained.
22 /* Size of the blocks written to the compressed file */
25 int main(int argc
, char *argv
[])
32 /* Provide usage help */
34 printf("Usage:\n%s FILENAME\n", argv
[0]);
38 file
= fopen(argv
[1], "r");
44 ret
= fseek(file
, 0, SEEK_END
);
51 fprintf(stderr
, "File %s has length 0\n", argv
[1]);
61 count
= fread(buf
, 1, count
, file
);
64 printf("/* SPDX-License-Identifier: GPL-2.0+ */\n");
66 printf(" * Non-zero %u byte strings of a disk image\n", BLOCK_SIZE
);
68 printf(" * Generated with tools/file2include\n");
70 printf("#define EFI_ST_DISK_IMG { 0x%08zx, { \\\n", count
);
72 for (i
= 0; i
< count
; i
+= BLOCK_SIZE
) {
75 for (j
= i
; j
< i
+ BLOCK_SIZE
&& j
< count
; ++j
) {
81 printf("\t{0x%08zx, \"", i
);
82 for (j
= i
; j
< i
+ BLOCK_SIZE
&& j
< count
; ++j
)
83 printf("\\x%02x", buf
[j
]);
85 for (j
= i
; j
< i
+ BLOCK_SIZE
&& j
< count
; ++j
) {
86 if (buf
[j
] != '*' && buf
[j
] >= 0x20 && buf
[j
] <= 0x7e)
93 printf("\t{0, NULL} } }\n");
95 /* Release resources */