2 * *****************************************************************************
4 * SPDX-License-Identifier: BSD-2-Clause
6 * Copyright (c) 2018-2021 Gavin D. Howard and contributors.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
11 * * Redistributions of source code must retain the above copyright notice, this
12 * list of conditions and the following disclaimer.
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.
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.
30 * *****************************************************************************
32 * The entry point for bc.
54 int main(int argc, char *argv[]) {
57 size_t len = strlen(BC_EXECPREFIX);
59 // Must set the locale properly in order to have the right error messages.
60 vm.locale = setlocale(LC_ALL, "");
62 // Set the start pledge().
63 bc_pledge(bc_pledge_start, NULL);
65 // Figure out the name of the calculator we are using. We can't use basename
66 // because it's not portable, but yes, this is stripping off the directory.
67 name = strrchr(argv[0], BC_FILE_SEP);
68 vm.name = (name == NULL) ? argv[0] : name + 1;
70 // If the name is longer than the length of the prefix, skip the prefix.
71 if (strlen(vm.name) > len) vm.name += len;
75 // We *must* do this here. Otherwise, other code could not jump out all of
77 bc_vec_init(&vm.jmp_bufs, sizeof(sigjmp_buf), BC_DTOR_NONE);
79 BC_SETJMP_LOCKED(exit);
86 // BC_IS_BC uses vm.name, which was set above. So we're good.
87 if (BC_IS_BC) bc_main(argc, argv);
88 else dc_main(argc, argv);
94 // Ensure we exit appropriately.
95 return bc_vm_atexit((int) vm.status);