[d39cbae9] | 1 | /* |
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| 2 | * bin2c.c |
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| 3 | * |
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[f6e2e97] | 4 | * convert a binary file into a C source array. |
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[d39cbae9] | 5 | * |
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[c82e98f4] | 6 | * THE "BEER-WARE LICENSE" (Revision 3.1415): |
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| 7 | * sandro AT sigala DOT it wrote this file. As long as you retain this |
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| 8 | * notice you can do whatever you want with this stuff. If we meet some |
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| 9 | * day, and you think this stuff is worth it, you can buy me a beer in |
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| 10 | * return. Sandro Sigala |
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[f6e2e97] | 11 | * |
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| 12 | * Subsequently modified by Joel Sherrill <joel.sherrill@oarcorp.com> |
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| 13 | * to add a number of capabilities not in the original. |
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[d39cbae9] | 14 | * |
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| 15 | * syntax: bin2c [-c] [-z] <input_file> <output_file> |
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| 16 | * |
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| 17 | * -c do NOT add the "const" keyword to definition |
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| 18 | * -s add the "static" keywork to definition |
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[f6e2e97] | 19 | * -v verbose |
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[d39cbae9] | 20 | * -z terminate the array with a zero (useful for embedded C strings) |
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| 21 | * |
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| 22 | * examples: |
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| 23 | * bin2c -c myimage.png myimage_png.cpp |
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| 24 | * bin2c -z sometext.txt sometext_txt.cpp |
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| 25 | * |
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| 26 | */ |
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[9df0a95] | 27 | |
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| 28 | #include <ctype.h> |
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| 29 | #include <stdio.h> |
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| 30 | #include <stdlib.h> |
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| 31 | #include <string.h> |
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| 32 | |
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| 33 | #ifndef PATH_MAX |
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| 34 | #define PATH_MAX 1024 |
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| 35 | #endif |
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| 36 | |
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[d39cbae9] | 37 | int useconst = 1; |
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| 38 | int usestatic = 0; |
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| 39 | int verbose = 0; |
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[9df0a95] | 40 | int zeroterminated = 0; |
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[bafe269d] | 41 | int createC = 1; |
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| 42 | int createH = 1; |
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[9df0a95] | 43 | |
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| 44 | int myfgetc(FILE *f) |
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| 45 | { |
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[d39cbae9] | 46 | int c = fgetc(f); |
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| 47 | if (c == EOF && zeroterminated) { |
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| 48 | zeroterminated = 0; |
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| 49 | return 0; |
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| 50 | } |
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| 51 | return c; |
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[9df0a95] | 52 | } |
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| 53 | |
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| 54 | void process(const char *ifname, const char *ofname) |
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| 55 | { |
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[d39cbae9] | 56 | FILE *ifile, *ocfile, *ohfile; |
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| 57 | char buf[PATH_MAX], *p; |
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| 58 | char obasename[PATH_MAX]; |
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| 59 | char ocname[PATH_MAX]; |
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| 60 | char ohname[PATH_MAX]; |
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| 61 | const char *cp; |
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| 62 | size_t len; |
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| 63 | |
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| 64 | /* Error check */ |
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| 65 | if ( !ifname || !ofname ) { |
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| 66 | fprintf(stderr, "process has NULL filename\n"); |
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| 67 | exit(1); |
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| 68 | } |
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| 69 | |
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| 70 | strncpy( obasename, ofname, PATH_MAX ); |
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| 71 | len = strlen( obasename ); |
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| 72 | if ( obasename[len-2] == '.' && obasename[len-1] == 'c' ) |
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| 73 | obasename[len-2] = '\0'; |
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| 74 | |
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| 75 | sprintf( ocname, "%s.c", obasename ); |
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| 76 | sprintf( ohname, "%s.h", obasename ); |
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| 77 | |
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| 78 | if ( verbose ) { |
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| 79 | fprintf( |
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| 80 | stderr, |
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| 81 | "in file: %s\n" |
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| 82 | "c file: %s\n" |
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| 83 | "h file: %s\n", |
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| 84 | ifname, |
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| 85 | ocname, |
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| 86 | ohname |
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| 87 | ); |
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| 88 | } |
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| 89 | |
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| 90 | /* Open input and output files */ |
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| 91 | ifile = fopen(ifname, "rb"); |
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| 92 | if (ifile == NULL) { |
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| 93 | fprintf(stderr, "cannot open %s for reading\n", ifname); |
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| 94 | exit(1); |
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| 95 | } |
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[bafe269d] | 96 | |
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| 97 | if ( createC ) { |
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[d39cbae9] | 98 | ocfile = fopen(ocname, "wb"); |
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| 99 | if (ocfile == NULL) { |
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| 100 | fprintf(stderr, "cannot open %s for writing\n", ocname); |
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| 101 | exit(1); |
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| 102 | } |
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[bafe269d] | 103 | } |
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| 104 | |
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| 105 | if ( createH ) { |
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[d39cbae9] | 106 | ohfile = fopen(ohname, "wb"); |
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| 107 | if (ohfile == NULL) { |
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| 108 | fprintf(stderr, "cannot open %s for writing\n", ohname); |
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| 109 | exit(1); |
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| 110 | } |
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[bafe269d] | 111 | } |
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| 112 | |
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[d39cbae9] | 113 | /* find basename */ |
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| 114 | if ((cp = strrchr(ifname, '/')) != NULL) |
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| 115 | ++cp; |
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| 116 | else { |
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| 117 | if ((cp = strrchr(ifname, '\\')) != NULL) |
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| 118 | ++cp; |
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| 119 | else |
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| 120 | cp = ifname; |
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| 121 | } |
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| 122 | strcpy(buf, cp); |
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| 123 | for (p = buf; *p != '\0'; ++p) |
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| 124 | if (!isalnum(*p)) |
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| 125 | *p = '_'; |
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| 126 | |
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[bafe269d] | 127 | if ( createC ) { |
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[d39cbae9] | 128 | /* print C file header */ |
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| 129 | fprintf( |
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| 130 | ocfile, |
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| 131 | "/*\n" |
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| 132 | " * Declarations for C structure representing binary file %s\n" |
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| 133 | " *\n" |
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| 134 | " * WARNING: Automatically generated -- do not edit!\n" |
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| 135 | " */\n" |
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| 136 | "\n" |
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| 137 | "#include <sys/types.h>\n" |
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| 138 | "\n", |
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| 139 | ifname |
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| 140 | ); |
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| 141 | |
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| 142 | /* print structure */ |
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| 143 | fprintf( |
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| 144 | ocfile, |
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| 145 | "%s%sunsigned char %s[] = {\n ", |
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| 146 | ((usestatic) ? "static " : ""), |
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| 147 | ((useconst) ? "const " : ""), |
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| 148 | buf |
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| 149 | ); |
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| 150 | int c, col = 1; |
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| 151 | while ((c = myfgetc(ifile)) != EOF) { |
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| 152 | if (col >= 78 - 6) { |
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| 153 | fprintf(ocfile, "\n "); |
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| 154 | col = 1; |
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| 155 | } |
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| 156 | fprintf(ocfile, "0x%.2x, ", c); |
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| 157 | col += 6; |
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| 158 | |
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| 159 | } |
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| 160 | fprintf(ocfile, "\n};\n"); |
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| 161 | |
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| 162 | /* print sizeof */ |
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| 163 | fprintf( |
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| 164 | ocfile, |
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| 165 | "\n" |
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| 166 | "%s%ssize_t %s_size = sizeof(%s);\n", |
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| 167 | ((usestatic) ? "static " : ""), |
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| 168 | ((useconst) ? "const " : ""), |
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| 169 | buf, |
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| 170 | buf |
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| 171 | ); |
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[bafe269d] | 172 | } /* createC */ |
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| 173 | |
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[d39cbae9] | 174 | /*****************************************************************/ |
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| 175 | /****** END OF C FILE *****/ |
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| 176 | /*****************************************************************/ |
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| 177 | |
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[bafe269d] | 178 | if ( createH ) { |
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[d39cbae9] | 179 | /* print H file header */ |
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| 180 | fprintf( |
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| 181 | ohfile, |
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| 182 | "/*\n" |
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| 183 | " * Extern declarations for C structure representing binary file %s\n" |
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| 184 | " *\n" |
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| 185 | " * WARNING: Automatically generated -- do not edit!\n" |
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| 186 | " */\n" |
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| 187 | "\n" |
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| 188 | "#ifndef __%s_h\n" |
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| 189 | "#define __%s_h\n" |
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| 190 | "\n" |
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| 191 | "#include <sys/types.h>\n" |
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| 192 | "\n", |
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| 193 | obasename, /* header */ |
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| 194 | obasename, /* ifndef */ |
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| 195 | obasename /* define */ |
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| 196 | ); |
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| 197 | |
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| 198 | /* print structure */ |
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| 199 | fprintf( |
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| 200 | ohfile, |
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| 201 | "extern %s%sunsigned char %s[];", |
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| 202 | ((usestatic) ? "static " : ""), |
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| 203 | ((useconst) ? "const " : ""), |
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| 204 | buf |
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| 205 | ); |
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| 206 | /* print sizeof */ |
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| 207 | fprintf( |
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| 208 | ohfile, |
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| 209 | "\n" |
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| 210 | "extern %s%ssize_t %s_size;\n", |
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| 211 | ((usestatic) ? "static " : ""), |
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| 212 | ((useconst) ? "const " : ""), |
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| 213 | buf |
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| 214 | ); |
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| 215 | |
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| 216 | fprintf( |
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| 217 | ohfile, |
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| 218 | "\n" |
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| 219 | "#endif\n" |
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| 220 | ); |
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[bafe269d] | 221 | } /* createH */ |
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| 222 | |
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[d39cbae9] | 223 | /*****************************************************************/ |
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| 224 | /****** END OF H FILE *****/ |
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| 225 | /*****************************************************************/ |
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[335d67a] | 226 | |
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[d39cbae9] | 227 | fclose(ifile); |
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[bafe269d] | 228 | if ( createC ) { fclose(ocfile); } |
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| 229 | if ( createH ) { fclose(ohfile); } |
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[9df0a95] | 230 | } |
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| 231 | |
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| 232 | void usage(void) |
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| 233 | { |
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[d39cbae9] | 234 | fprintf( |
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| 235 | stderr, |
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[bafe269d] | 236 | "usage: bin2c [-csvzCH] <input_file> <output_file>\n" |
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[d39cbae9] | 237 | " <input_file> is the binary file to convert\n" |
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| 238 | " <output_file> should not have a .c or .h extension\n" |
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| 239 | "\n" |
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| 240 | " -c - do NOT use const in declaration\n" |
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| 241 | " -s - do use static in declaration\n" |
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| 242 | " -v - verbose\n" |
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| 243 | " -z - add zero terminator\n" |
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[bafe269d] | 244 | " -H - create c-header only\n" |
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| 245 | " -C - create c-source file only\n" |
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[d39cbae9] | 246 | ); |
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| 247 | exit(1); |
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[9df0a95] | 248 | } |
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| 249 | |
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| 250 | int main(int argc, char **argv) |
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| 251 | { |
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[d39cbae9] | 252 | while (argc > 3) { |
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| 253 | if (!strcmp(argv[1], "-c")) { |
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| 254 | useconst = 0; |
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| 255 | --argc; |
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| 256 | ++argv; |
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| 257 | } else if (!strcmp(argv[1], "-s")) { |
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| 258 | usestatic = 1; |
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| 259 | --argc; |
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| 260 | ++argv; |
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| 261 | } else if (!strcmp(argv[1], "-v")) { |
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| 262 | usestatic = 1; |
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| 263 | --argc; |
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| 264 | ++argv; |
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| 265 | } else if (!strcmp(argv[1], "-z")) { |
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| 266 | zeroterminated = 1; |
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| 267 | --argc; |
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| 268 | ++argv; |
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[bafe269d] | 269 | } else if (!strcmp(argv[1], "-C")) { |
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| 270 | createH = 0; |
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| 271 | createC = 1; |
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| 272 | --argc; |
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| 273 | ++argv; |
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| 274 | } else if (!strcmp(argv[1], "-H")) { |
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| 275 | createC = 0; |
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| 276 | createH = 1; |
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| 277 | --argc; |
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| 278 | ++argv; |
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[d39cbae9] | 279 | } else { |
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| 280 | usage(); |
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| 281 | } |
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| 282 | } |
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| 283 | if (argc != 3) { |
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| 284 | usage(); |
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| 285 | } |
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| 286 | |
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| 287 | /* process( input_file, output_basename ) */ |
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| 288 | process(argv[1], argv[2]); |
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| 289 | return 0; |
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[9df0a95] | 290 | } |
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[d39cbae9] | 291 | |
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