1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
/*
* *****************************************************************************
*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2018-2025 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.
*
* *****************************************************************************
*
* The entry point for bc.
*
*/
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#if BC_ENABLE_NLS
#include <locale.h>
#endif // BC_ENABLE_NLS
#ifndef _WIN32
#include <libgen.h>
#endif // _WIN32
#include <setjmp.h>
#include <status.h>
#include <vm.h>
#include <bc.h>
#include <dc.h>
int
main(int argc, const char* argv[])
{
BcStatus s;
char* name;
size_t len = strlen(BC_EXECPREFIX);
#if BC_ENABLE_NLS
// Must set the locale properly in order to have the right error messages.
vm->locale = setlocale(LC_ALL, "");
#endif // BC_ENABLE_NLS
// Set the start pledge().
bc_pledge(bc_pledge_start, NULL);
// Sometimes, argv[0] can be NULL. Better make sure to be robust against it.
if (argv[0] != NULL)
{
// Figure out the name of the calculator we are using. We can't use
// basename because it's not portable, but yes, this is stripping off
// the directory.
name = strrchr(argv[0], BC_FILE_SEP);
vm->name = (name == NULL) ? argv[0] : name + 1;
}
else
{
#if !DC_ENABLED
vm->name = "bc";
#elif !BC_ENABLED
vm->name = "dc";
#else
// Just default to bc in that case.
vm->name = "bc";
#endif
}
// If the name is longer than the length of the prefix, skip the prefix.
if (strlen(vm->name) > len) vm->name += len;
BC_SIG_LOCK;
// We *must* do this here. Otherwise, other code could not jump out all of
// the way.
bc_vec_init(&vm->jmp_bufs, sizeof(sigjmp_buf), BC_DTOR_NONE);
BC_SETJMP_LOCKED(vm, exit);
#if BC_CLANG
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wcast-qual"
#endif // BC_CLANG
#if !DC_ENABLED
s = bc_main(argc, (const char**) argv);
#elif !BC_ENABLED
s = dc_main(argc, (const char**) argv);
#else
// BC_IS_BC uses vm->name, which was set above. So we're good.
if (BC_IS_BC) s = bc_main(argc, (const char**) argv);
else s = dc_main(argc, (const char**) argv);
#endif
#if BC_CLANG
#pragma clang diagnostic pop
#endif // BC_CLANG
vm->status = (sig_atomic_t) s;
exit:
BC_SIG_MAYLOCK;
s = bc_vm_atexit((BcStatus) vm->status);
return (int) s;
}
|
