097531ccbf
This moves the logic to create the parent folder to data_to_c itself rather than having cmake do it, preventing several thousand cmake instances to be started. see pr#141404 for details/benchmarks Pull Request: https://projects.blender.org/blender/blender/pulls/141404
124 lines
3.0 KiB
C++
124 lines
3.0 KiB
C++
/* SPDX-FileCopyrightText: 2001-2002 NaN Holding BV. All rights reserved.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup datatoc
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*/
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#include <algorithm>
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <filesystem>
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#include <iostream>
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// #define VERBOSE
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#define STRPREFIX(a, b) (strncmp((a), (b), strlen(b)) == 0)
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static char *arg_basename(char *string)
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{
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char *lfslash, *lbslash;
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lfslash = strrchr(string, '/');
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lbslash = strrchr(string, '\\');
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if (lbslash) {
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lbslash++;
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}
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if (lfslash) {
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lfslash++;
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}
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return std::max({string, lfslash, lbslash});
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}
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int main(int argc, char **argv)
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{
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FILE *fpin, *fpout;
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long size;
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int i;
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int argv_len;
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if (argc != 3) {
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printf("Usage: datatoc <data_file_from> <data_file_to>\n");
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exit(1);
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}
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fpin = fopen(argv[1], "rb");
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if (!fpin) {
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printf("Unable to open input <%s>\n", argv[1]);
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exit(1);
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}
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argv[1] = arg_basename(argv[1]);
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fseek(fpin, 0L, SEEK_END);
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size = ftell(fpin);
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fseek(fpin, 0L, SEEK_SET);
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if (argv[1][0] == '.') {
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argv[1]++;
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}
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#ifdef VERBOSE
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printf("Making C file <%s>\n", argv[2]);
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#endif
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/* We make the required directories here rather than having the build system
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* do the work for us, as having cmake do it leads to several thousand cmake
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* instances being launched, leading to significant overhead, see pr #141404
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* for details. */
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std::filesystem::path parent_dir = std::filesystem::path(argv[2]).parent_path();
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std::error_code ec;
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if (!std::filesystem::create_directories(parent_dir, ec)) {
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if (ec) {
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std::cerr << "Unable to create " << parent_dir << " : " << ec.message() << std::endl;
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exit(1);
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}
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}
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argv_len = int(strlen(argv[1]));
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for (i = 0; i < argv_len; i++) {
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if (argv[1][i] == '.') {
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argv[1][i] = '_';
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}
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}
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fpout = fopen(argv[2], "w");
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if (!fpout) {
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fprintf(stderr, "Unable to open output <%s>\n", argv[2]);
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exit(1);
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}
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fprintf(fpout, "/* DataToC output of file <%s> */\n\n", argv[1]);
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/* Quiet 'missing-variable-declarations' warning. */
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fprintf(fpout, "extern const int datatoc_%s_size;\n", argv[1]);
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fprintf(fpout, "extern const char datatoc_%s[];\n\n", argv[1]);
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fprintf(fpout, "const int datatoc_%s_size = %d;\n", argv[1], int(size));
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fprintf(fpout, "const char datatoc_%s[] = {\n", argv[1]);
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while (size--) {
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/* Even though this file is generated and doesn't need new-lines,
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* these files may be loaded by developers when looking up symbols.
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* Avoid a very long single line that may lock-up some editors. */
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if (size % 32 == 31) {
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fprintf(fpout, "\n");
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}
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// fprintf(fpout, "\\x%02x", getc(fpin));
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fprintf(fpout, "%3d,", getc(fpin));
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}
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/* Trailing null terminator, this isn't needed in some cases and
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* won't be taken into account by the size variable, but its useful when dealing with
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* null terminated string data. */
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fprintf(fpout, "0\n};\n\n");
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fclose(fpin);
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fclose(fpout);
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return 0;
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}
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