1 a2728733 2021-07-18 op /*
 2 a2728733 2021-07-18 op  * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
 3 a2728733 2021-07-18 op  *
 4 a2728733 2021-07-18 op  * Permission to use, copy, modify, and distribute this software for any
 5 a2728733 2021-07-18 op  * purpose with or without fee is hereby granted, provided that the above
 6 a2728733 2021-07-18 op  * copyright notice and this permission notice appear in all copies.
 7 a2728733 2021-07-18 op  *
 8 a2728733 2021-07-18 op  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 9 a2728733 2021-07-18 op  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 a2728733 2021-07-18 op  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 a2728733 2021-07-18 op  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 a2728733 2021-07-18 op  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 a2728733 2021-07-18 op  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 a2728733 2021-07-18 op  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 a2728733 2021-07-18 op  */
16 a2728733 2021-07-18 op 
17 a2728733 2021-07-18 op /*
18 a2728733 2021-07-18 op  * pagebundler converts the given file into a valid C program that can
19 a2728733 2021-07-18 op  * be compiled.  The generated code provides a variable that holds the
20 a2728733 2021-07-18 op  * original file.
21 a2728733 2021-07-18 op  *
22 a2728733 2021-07-18 op  * Usage: pagebundler -f file -v varname > outfile
23 a2728733 2021-07-18 op  */
24 a2728733 2021-07-18 op 
25 a2728733 2021-07-18 op #include <errno.h>
26 a2728733 2021-07-18 op #include <stdio.h>
27 a2728733 2021-07-18 op #include <unistd.h>
28 a2728733 2021-07-18 op #include <string.h>
29 a2728733 2021-07-18 op 
30 a2728733 2021-07-18 op const char *file;
31 a2728733 2021-07-18 op const char *varname;
32 a2728733 2021-07-18 op 
33 a2728733 2021-07-18 op int
34 a2728733 2021-07-18 op main(int argc, char **argv)
35 a2728733 2021-07-18 op {
36 a2728733 2021-07-18 op 	size_t len, r, i;
37 a2728733 2021-07-18 op 	int ch;
38 a2728733 2021-07-18 op 	FILE *f;
39 a2728733 2021-07-18 op 	uint8_t buf[64];
40 a2728733 2021-07-18 op 
41 a2728733 2021-07-18 op 	while ((ch = getopt(argc, argv, "f:v:")) != -1) {
42 a2728733 2021-07-18 op 		switch (ch) {
43 a2728733 2021-07-18 op 		case 'f':
44 a2728733 2021-07-18 op 			file = optarg;
45 a2728733 2021-07-18 op 			break;
46 a2728733 2021-07-18 op 		case 'v':
47 a2728733 2021-07-18 op 			varname = optarg;
48 a2728733 2021-07-18 op 			break;
49 a2728733 2021-07-18 op 		default:
50 a2728733 2021-07-18 op 			fprintf(stderr, "%s: wrong usage\n",
51 a2728733 2021-07-18 op 			    argv[0]);
52 a2728733 2021-07-18 op 			return 1;
53 a2728733 2021-07-18 op 		}
54 a2728733 2021-07-18 op 	}
55 a2728733 2021-07-18 op 
56 a2728733 2021-07-18 op 	if (file == NULL || varname == NULL) {
57 a2728733 2021-07-18 op 		fprintf(stderr, "%s: wrong usage\n", argv[0]);
58 a2728733 2021-07-18 op 		return 1;
59 a2728733 2021-07-18 op 	}
60 a2728733 2021-07-18 op 
61 a2728733 2021-07-18 op 	if ((f = fopen(file, "r")) == NULL) {
62 a2728733 2021-07-18 op 		fprintf(stderr, "%s: can't open %s: %s",
63 a2728733 2021-07-18 op 		    argv[0], file, strerror(errno));
64 a2728733 2021-07-18 op 	}
65 a2728733 2021-07-18 op 
66 a2728733 2021-07-18 op         printf("const uint8_t %s[] = {\n", varname);
67 a2728733 2021-07-18 op 
68 a2728733 2021-07-18 op 	len = 0;
69 a2728733 2021-07-18 op         for (;;) {
70 a2728733 2021-07-18 op 		r = fread(buf, 1, sizeof(buf), f);
71 a2728733 2021-07-18 op 		len += r;
72 a2728733 2021-07-18 op 
73 a2728733 2021-07-18 op 		printf("\t");
74 a2728733 2021-07-18 op 		for (i = 0; i < r; ++i) {
75 a2728733 2021-07-18 op 			printf("0x%x, ", buf[i]);
76 a2728733 2021-07-18 op 		}
77 a2728733 2021-07-18 op 		printf("\n");
78 a2728733 2021-07-18 op 
79 a2728733 2021-07-18 op 		if (r != sizeof(buf))
80 a2728733 2021-07-18 op 			break;
81 a2728733 2021-07-18 op 	}
82 a2728733 2021-07-18 op 
83 a2728733 2021-07-18 op 	len++;
84 a2728733 2021-07-18 op 	printf("\t0x00\n");
85 a2728733 2021-07-18 op 	printf("}; /* %s */\n", varname);
86 a2728733 2021-07-18 op 
87 a2728733 2021-07-18 op 	printf("size_t %s_len = %zu;\n", varname, len);
88 a2728733 2021-07-18 op 
89 a2728733 2021-07-18 op 	fclose(f);
90 a2728733 2021-07-18 op 	return 0;
91 a2728733 2021-07-18 op }