| /* |
| * ***************************************************************************** |
| * |
| * SPDX-License-Identifier: BSD-2-Clause |
| * |
| * Copyright (c) 2018-2020 Gavin D. Howard and contributors. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * * Redistributions of source code must retain the above copyright notice, this |
| * list of conditions and the following disclaimer. |
| * |
| * * Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| * |
| * ***************************************************************************** |
| * |
| * Generates a const array from a bc script. |
| * |
| */ |
| |
| #include <stdbool.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include <errno.h> |
| |
| #include <libgen.h> |
| |
| static const char* const bc_gen_header = |
| "// Copyright (c) 2018-2020 Gavin D. Howard and contributors.\n" |
| "// Licensed under the 2-clause BSD license.\n" |
| "// *** AUTOMATICALLY GENERATED FROM %s. DO NOT MODIFY. ***\n\n"; |
| |
| static const char* const bc_gen_label = "const char *%s = \"%s\";\n\n"; |
| static const char* const bc_gen_label_extern = "extern const char *%s;\n\n"; |
| static const char* const bc_gen_ifdef = "#if %s\n"; |
| static const char* const bc_gen_endif = "#endif // %s\n"; |
| static const char* const bc_gen_name = "const char %s[] = {\n"; |
| static const char* const bc_gen_name_extern = "extern const char %s[];\n\n"; |
| |
| #define IO_ERR (1) |
| #define INVALID_INPUT_FILE (2) |
| #define INVALID_PARAMS (3) |
| |
| #define MAX_WIDTH (74) |
| |
| int main(int argc, char *argv[]) { |
| |
| FILE *in, *out; |
| char *label, *define, *name, *include; |
| int c, count, slashes, err = IO_ERR; |
| bool has_label, has_define, remove_tabs; |
| |
| if (argc < 5) { |
| printf("usage: %s input output name header [label [define [remove_tabs]]]\n", argv[0]); |
| return INVALID_PARAMS; |
| } |
| |
| name = argv[3]; |
| include = argv[4]; |
| |
| has_label = (argc > 5 && strcmp("", argv[5]) != 0); |
| label = has_label ? argv[5] : ""; |
| |
| has_define = (argc > 6 && strcmp("", argv[6]) != 0); |
| define = has_define ? argv[6] : ""; |
| |
| remove_tabs = (argc > 7); |
| |
| in = fopen(argv[1], "r"); |
| if (!in) return INVALID_INPUT_FILE; |
| |
| out = fopen(argv[2], "w"); |
| if (!out) goto out_err; |
| |
| if (fprintf(out, bc_gen_header, argv[1]) < 0) goto err; |
| if (has_label && fprintf(out, bc_gen_label_extern, label) < 0) goto err; |
| if (fprintf(out, bc_gen_name_extern, name) < 0) goto err; |
| if (has_define && fprintf(out, bc_gen_ifdef, define) < 0) goto err; |
| if (has_label && fprintf(out, bc_gen_label, label, argv[1]) < 0) goto err; |
| if (fprintf(out, bc_gen_name, name) < 0) goto err; |
| |
| c = count = slashes = 0; |
| |
| while (slashes < 2 && (c = fgetc(in)) >= 0) { |
| slashes += (slashes == 1 && c == '/' && fgetc(in) == '\n'); |
| slashes += (!slashes && c == '/' && fgetc(in) == '*'); |
| } |
| |
| if (c < 0) { |
| err = INVALID_INPUT_FILE; |
| goto err; |
| } |
| |
| while ((c = fgetc(in)) == '\n'); |
| |
| while (c >= 0) { |
| |
| int val; |
| |
| if (!remove_tabs || c != '\t') { |
| |
| if (!count && fputc('\t', out) == EOF) goto err; |
| |
| val = fprintf(out, "%d,", c); |
| if (val < 0) goto err; |
| |
| count += val; |
| |
| if (count > MAX_WIDTH) { |
| count = 0; |
| if (fputc('\n', out) == EOF) goto err; |
| } |
| } |
| |
| c = fgetc(in); |
| } |
| |
| if (!count && (fputc(' ', out) == EOF || fputc(' ', out) == EOF)) goto err; |
| if (fprintf(out, "0\n};\n") < 0) goto err; |
| |
| err = (has_define && fprintf(out, bc_gen_endif, define) < 0); |
| |
| err: |
| fclose(out); |
| out_err: |
| fclose(in); |
| return err; |
| } |