1 /* 2 * ***************************************************************************** 3 * 4 * SPDX-License-Identifier: BSD-2-Clause 5 * 6 * Copyright (c) 2018-2020 Gavin D. Howard and contributors. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions are met: 10 * 11 * * Redistributions of source code must retain the above copyright notice, this 12 * list of conditions and the following disclaimer. 13 * 14 * * Redistributions in binary form must reproduce the above copyright notice, 15 * this list of conditions and the following disclaimer in the documentation 16 * and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 * 30 * ***************************************************************************** 31 * 32 * Generates a const array from a bc script. 33 * 34 */ 35 36 #include <stdbool.h> 37 #include <stdio.h> 38 #include <stdlib.h> 39 #include <string.h> 40 41 #include <errno.h> 42 43 #include <libgen.h> 44 45 static const char* const bc_gen_header = 46 "// Copyright (c) 2018-2020 Gavin D. Howard and contributors.\n" 47 "// Licensed under the 2-clause BSD license.\n" 48 "// *** AUTOMATICALLY GENERATED FROM %s. DO NOT MODIFY. ***\n"; 49 50 static const char* const bc_gen_include = "#include <%s>\n\n"; 51 static const char* const bc_gen_label = "const char *%s = \"%s\";\n\n"; 52 static const char* const bc_gen_ifdef = "#if %s\n"; 53 static const char* const bc_gen_endif = "#endif // %s\n"; 54 static const char* const bc_gen_name = "const char %s[] = {\n"; 55 56 #define IO_ERR (1) 57 #define INVALID_INPUT_FILE (2) 58 #define INVALID_PARAMS (3) 59 60 #define MAX_WIDTH (74) 61 62 int main(int argc, char *argv[]) { 63 64 FILE *in, *out; 65 char *label, *define, *name, *include; 66 int c, count, slashes, err = IO_ERR; 67 bool has_label, has_define, remove_tabs; 68 69 if (argc < 5) { 70 printf("usage: %s input output name header [label [define [remove_tabs]]]\n", argv[0]); 71 return INVALID_PARAMS; 72 } 73 74 name = argv[3]; 75 include = argv[4]; 76 77 has_label = (argc > 5 && strcmp("", argv[5]) != 0); 78 label = has_label ? argv[5] : ""; 79 80 has_define = (argc > 6 && strcmp("", argv[6]) != 0); 81 define = has_define ? argv[6] : ""; 82 83 remove_tabs = (argc > 7); 84 85 in = fopen(argv[1], "r"); 86 if (!in) return INVALID_INPUT_FILE; 87 88 out = fopen(argv[2], "w"); 89 if (!out) goto out_err; 90 91 if (fprintf(out, bc_gen_header, argv[1]) < 0) goto err; 92 if (has_define && fprintf(out, bc_gen_ifdef, define) < 0) goto err; 93 if (fprintf(out, bc_gen_include, include) < 0) goto err; 94 if (has_label && fprintf(out, bc_gen_label, label, argv[1]) < 0) goto err; 95 if (fprintf(out, bc_gen_name, name) < 0) goto err; 96 97 c = count = slashes = 0; 98 99 while (slashes < 2 && (c = fgetc(in)) >= 0) { 100 slashes += (slashes == 1 && c == '/' && fgetc(in) == '\n'); 101 slashes += (!slashes && c == '/' && fgetc(in) == '*'); 102 } 103 104 if (c < 0) { 105 err = INVALID_INPUT_FILE; 106 goto err; 107 } 108 109 while ((c = fgetc(in)) == '\n'); 110 111 while (c >= 0) { 112 113 int val; 114 115 if (!remove_tabs || c != '\t') { 116 117 if (!count && fputc('\t', out) == EOF) goto err; 118 119 val = fprintf(out, "%d,", c); 120 if (val < 0) goto err; 121 122 count += val; 123 124 if (count > MAX_WIDTH) { 125 count = 0; 126 if (fputc('\n', out) == EOF) goto err; 127 } 128 } 129 130 c = fgetc(in); 131 } 132 133 if (!count && (fputc(' ', out) == EOF || fputc(' ', out) == EOF)) goto err; 134 if (fprintf(out, "0\n};\n") < 0) goto err; 135 136 err = (has_define && fprintf(out, bc_gen_endif, define) < 0); 137 138 err: 139 fclose(out); 140 out_err: 141 fclose(in); 142 return err; 143 } 144