145 lines
4.3 KiB
C
145 lines
4.3 KiB
C
/*
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* *****************************************************************************
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2018-2021 Gavin D. Howard and contributors.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* *****************************************************************************
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*
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* Generates a const array from a bc script.
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*
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*/
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <libgen.h>
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static const char* const bc_gen_header =
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"// Copyright (c) 2018-2021 Gavin D. Howard and contributors.\n"
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"// Licensed under the 2-clause BSD license.\n"
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"// *** AUTOMATICALLY GENERATED FROM %s. DO NOT MODIFY. ***\n\n";
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static const char* const bc_gen_label = "const char *%s = \"%s\";\n\n";
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static const char* const bc_gen_label_extern = "extern const char *%s;\n\n";
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static const char* const bc_gen_ifdef = "#if %s\n";
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static const char* const bc_gen_endif = "#endif // %s\n";
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static const char* const bc_gen_name = "const char %s[] = {\n";
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static const char* const bc_gen_name_extern = "extern const char %s[];\n\n";
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#define IO_ERR (1)
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#define INVALID_INPUT_FILE (2)
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#define INVALID_PARAMS (3)
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#define MAX_WIDTH (74)
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int main(int argc, char *argv[]) {
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FILE *in, *out;
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char *label, *define, *name;
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int c, count, slashes, err = IO_ERR;
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bool has_label, has_define, remove_tabs;
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if (argc < 5) {
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printf("usage: %s input output name header [label [define [remove_tabs]]]\n", argv[0]);
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return INVALID_PARAMS;
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}
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name = argv[3];
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has_label = (argc > 4 && strcmp("", argv[4]) != 0);
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label = has_label ? argv[4] : "";
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has_define = (argc > 5 && strcmp("", argv[5]) != 0);
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define = has_define ? argv[5] : "";
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remove_tabs = (argc > 6);
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in = fopen(argv[1], "r");
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if (!in) return INVALID_INPUT_FILE;
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out = fopen(argv[2], "w");
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if (!out) goto out_err;
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if (fprintf(out, bc_gen_header, argv[1]) < 0) goto err;
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if (has_label && fprintf(out, bc_gen_label_extern, label) < 0) goto err;
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if (fprintf(out, bc_gen_name_extern, name) < 0) goto err;
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if (has_define && fprintf(out, bc_gen_ifdef, define) < 0) goto err;
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if (has_label && fprintf(out, bc_gen_label, label, argv[1]) < 0) goto err;
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if (fprintf(out, bc_gen_name, name) < 0) goto err;
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c = count = slashes = 0;
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while (slashes < 2 && (c = fgetc(in)) >= 0) {
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slashes += (slashes == 1 && c == '/' && fgetc(in) == '\n');
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slashes += (!slashes && c == '/' && fgetc(in) == '*');
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}
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if (c < 0) {
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err = INVALID_INPUT_FILE;
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goto err;
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}
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while ((c = fgetc(in)) == '\n');
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while (c >= 0) {
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int val;
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if (!remove_tabs || c != '\t') {
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if (!count && fputc('\t', out) == EOF) goto err;
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val = fprintf(out, "%d,", c);
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if (val < 0) goto err;
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count += val;
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if (count > MAX_WIDTH) {
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count = 0;
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if (fputc('\n', out) == EOF) goto err;
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}
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}
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c = fgetc(in);
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}
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if (!count && (fputc(' ', out) == EOF || fputc(' ', out) == EOF)) goto err;
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if (fprintf(out, "0\n};\n") < 0) goto err;
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err = (has_define && fprintf(out, bc_gen_endif, define) < 0);
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err:
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fclose(out);
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out_err:
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fclose(in);
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return err;
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}
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