1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <string.h> 4 5 int main(int argc, char *argv[]) { 6 // Arguments 7 if (argc != 4 || (argc == 2 && strcmp(argv[1], "--help") == 0)) { 8 fprintf(stderr, "Usage: %s PREFIX OUTFILE INFILE\n", argv[0]); 9 exit(EXIT_FAILURE); 10 } 11 12 char const *prefix = argv[1]; 13 char const *infile_name = argv[3]; 14 char const *outfile_name = argv[2]; 15 16 // Open Files 17 FILE *infile = fopen(infile_name, "rb"); 18 19 if (!infile) { 20 fprintf(stderr, "Unable to open input file: %s\n", infile_name); 21 exit(EXIT_FAILURE); 22 } 23 24 FILE *outfile = fopen(outfile_name, "w"); 25 26 if (!outfile) { 27 fprintf(stderr, "Uanble to open output file: %s\n", outfile_name); 28 fclose(infile); 29 exit(EXIT_FAILURE); 30 } 31 32 33 // Generate Header Guard Begin 34 fprintf(outfile, "#ifndef %s_data_pack_h\n", prefix); 35 fprintf(outfile, "#define %s_data_pack_h\n\n", prefix); 36 37 38 // Generate Include Directive 39 fprintf(outfile, "#include <stddef.h>\n\n"); 40 41 42 // Generate Encoded Data 43 fprintf(outfile, "static const char %s_data[] =\n", prefix); 44 45 size_t data_size = 0; 46 for (;;) { 47 unsigned char buf[256]; 48 unsigned char *ptr = buf; 49 50 size_t nread = fread(buf, sizeof(char), sizeof(buf), infile); 51 size_t line_count = nread / 16; 52 size_t i; 53 54 data_size += nread; 55 56 for (i = 0; i < line_count; ++i, ptr += 16) { 57 fprintf(outfile, 58 "\"" 59 "\\x%02x\\x%02x\\x%02x\\x%02x" 60 "\\x%02x\\x%02x\\x%02x\\x%02x" 61 "\\x%02x\\x%02x\\x%02x\\x%02x" 62 "\\x%02x\\x%02x\\x%02x\\x%02x" 63 "\"\n", 64 ptr[0], ptr[1], ptr[2], ptr[3], 65 ptr[4], ptr[5], ptr[6], ptr[7], 66 ptr[8], ptr[9], ptr[10], ptr[11], 67 ptr[12], ptr[13], ptr[14], ptr[15]); 68 } 69 70 if (nread % 16 != 0) { 71 fprintf(outfile, "\""); 72 73 for (i = line_count * 16; i < nread; ++i) { 74 fprintf(outfile, "\\x%02x", buf[i]); 75 } 76 77 fprintf(outfile, "\"\n"); 78 } 79 80 if (nread != sizeof(buf)) { 81 // End of file reached 82 break; 83 } 84 } 85 86 fprintf(outfile, ";\n\n"); 87 88 89 // Generate Data Size 90 fprintf(outfile, "static const size_t %s_size = %lu;\n", 91 prefix, (unsigned long)data_size); 92 93 94 // Generate Header Guard End 95 fprintf(outfile, "\n#endif\n"); 96 97 98 // Close Files 99 fclose(infile); 100 fclose(outfile); 101 102 return EXIT_SUCCESS; 103 } 104
