1 a2728733 2021-07-18 op /*
  2 f2f795df 2024-02-06 op  * Copyright (c) 2021, 2022 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 ed84beb9 2021-07-18 op  * content of the original file and a _len variable with the size.
 21 a2728733 2021-07-18 op  *
 22 34b4388f 2022-02-08 op  * Usage: pagebundler file > outfile
 23 a2728733 2021-07-18 op  */
 24 a2728733 2021-07-18 op 
 25 f3f98c70 2022-02-08 op #include <ctype.h>
 26 a2728733 2021-07-18 op #include <errno.h>
 27 34b4388f 2022-02-08 op #include <limits.h>
 28 de6548b9 2021-07-18 op #include <stdint.h>
 29 a2728733 2021-07-18 op #include <stdio.h>
 30 34b4388f 2022-02-08 op #include <stdlib.h>
 31 a2728733 2021-07-18 op #include <string.h>
 32 de6548b9 2021-07-18 op #include <unistd.h>
 33 a2728733 2021-07-18 op 
 34 34b4388f 2022-02-08 op static void
 35 34b4388f 2022-02-08 op setfname(const char *fname, char *buf, size_t siz)
 36 34b4388f 2022-02-08 op {
 37 34b4388f 2022-02-08 op 	const char	*c, *d;
 38 34b4388f 2022-02-08 op 	size_t		 len;
 39 a2728733 2021-07-18 op 
 40 34b4388f 2022-02-08 op 	if ((c = strrchr(fname, '/')) != NULL)
 41 34b4388f 2022-02-08 op 		c++;
 42 34b4388f 2022-02-08 op 	else
 43 34b4388f 2022-02-08 op 		c = fname;
 44 34b4388f 2022-02-08 op 
 45 34b4388f 2022-02-08 op 	if ((d = strrchr(fname, '.')) == NULL || c > d)
 46 34b4388f 2022-02-08 op 		d = strchr(fname, '\0');
 47 34b4388f 2022-02-08 op 
 48 34b4388f 2022-02-08 op 	len = d - c;
 49 34b4388f 2022-02-08 op 	if (len >= siz) {
 50 34b4388f 2022-02-08 op 		fprintf(stderr, "file name too long: %s\n", fname);
 51 34b4388f 2022-02-08 op 		exit(1);
 52 34b4388f 2022-02-08 op 	}
 53 34b4388f 2022-02-08 op 
 54 34b4388f 2022-02-08 op 	memcpy(buf, c, len);
 55 34b4388f 2022-02-08 op 	buf[len] = '\0';
 56 34b4388f 2022-02-08 op }
 57 34b4388f 2022-02-08 op 
 58 f3f98c70 2022-02-08 op static int
 59 f3f98c70 2022-02-08 op validc(int c)
 60 f3f98c70 2022-02-08 op {
 61 f3f98c70 2022-02-08 op 	return isprint(c) && c != '\\' && c != '\'' && c != '\n';
 62 f3f98c70 2022-02-08 op }
 63 f3f98c70 2022-02-08 op 
 64 a2728733 2021-07-18 op int
 65 a2728733 2021-07-18 op main(int argc, char **argv)
 66 a2728733 2021-07-18 op {
 67 47eaa0e0 2024-06-09 op 	size_t	 r, i, n;
 68 14967caf 2022-02-08 op 	FILE	*f;
 69 afda2dda 2022-02-08 op 	uint8_t	 buf[BUFSIZ];
 70 34b4388f 2022-02-08 op 	char	 varname[PATH_MAX];
 71 a2728733 2021-07-18 op 
 72 34b4388f 2022-02-08 op 	if (argc != 2) {
 73 34b4388f 2022-02-08 op 		fprintf(stderr, "usage: %s file\n", *argv);
 74 a2728733 2021-07-18 op 		return 1;
 75 a2728733 2021-07-18 op 	}
 76 a2728733 2021-07-18 op 
 77 34b4388f 2022-02-08 op 	setfname(argv[1], varname, sizeof(varname));
 78 34b4388f 2022-02-08 op 
 79 34b4388f 2022-02-08 op 	if ((f = fopen(argv[1], "r")) == NULL) {
 80 a2728733 2021-07-18 op 		fprintf(stderr, "%s: can't open %s: %s",
 81 34b4388f 2022-02-08 op 		    argv[0], argv[1], strerror(errno));
 82 ed84beb9 2021-07-18 op 		return 1;
 83 a2728733 2021-07-18 op 	}
 84 a2728733 2021-07-18 op 
 85 f3f98c70 2022-02-08 op 	printf("const uint8_t %s[] = {", varname);
 86 a2728733 2021-07-18 op 
 87 f3f98c70 2022-02-08 op 	n = 0;
 88 95a8c791 2021-08-26 op 	for (;;) {
 89 a2728733 2021-07-18 op 		r = fread(buf, 1, sizeof(buf), f);
 90 a2728733 2021-07-18 op 
 91 f3f98c70 2022-02-08 op 		for (i = 0; i < r; ++i, ++n) {
 92 f3f98c70 2022-02-08 op 			if (n % 12 == 0)
 93 f3f98c70 2022-02-08 op 				printf("\n\t");
 94 f3f98c70 2022-02-08 op 			else
 95 f3f98c70 2022-02-08 op 				printf(" ");
 96 f3f98c70 2022-02-08 op 
 97 f3f98c70 2022-02-08 op 			if (validc(buf[i]))
 98 f3f98c70 2022-02-08 op 				printf("'%c',", buf[i]);
 99 f3f98c70 2022-02-08 op 			else if (buf[i] == '\n')
100 f3f98c70 2022-02-08 op 				printf("'\\n',");
101 f3f98c70 2022-02-08 op 			else
102 f3f98c70 2022-02-08 op 				printf("0x%x,", buf[i]);
103 a2728733 2021-07-18 op 		}
104 a2728733 2021-07-18 op 		printf("\n");
105 a2728733 2021-07-18 op 
106 a2728733 2021-07-18 op 		if (r != sizeof(buf))
107 a2728733 2021-07-18 op 			break;
108 a2728733 2021-07-18 op 	}
109 a2728733 2021-07-18 op 
110 47eaa0e0 2024-06-09 op 	printf("\t0x0\n");
111 a2728733 2021-07-18 op 	printf("}; /* %s */\n", varname);
112 a2728733 2021-07-18 op 
113 a2728733 2021-07-18 op 	fclose(f);
114 a2728733 2021-07-18 op 	return 0;
115 a2728733 2021-07-18 op }