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
128
129
130
131
132
133
134
135
136
137
138
139
|
//===-- runtime/environment.cpp -------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "environment.h"
#include "environment-default-list.h"
#include "memory.h"
#include "tools.h"
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <limits>
#ifdef _WIN32
extern char **_environ;
#else
extern char **environ;
#endif
namespace Fortran::runtime {
ExecutionEnvironment executionEnvironment;
static void SetEnvironmentDefaults(const EnvironmentDefaultList *envDefaults) {
if (!envDefaults) {
return;
}
for (int itemIndex = 0; itemIndex < envDefaults->numItems; ++itemIndex) {
const char *name = envDefaults->item[itemIndex].name;
const char *value = envDefaults->item[itemIndex].value;
#ifdef _WIN32
if (auto *x{std::getenv(name)}) {
continue;
}
if (_putenv_s(name, value) != 0) {
#else
if (setenv(name, value, /*overwrite=*/0) == -1) {
#endif
Fortran::runtime::Terminator{__FILE__, __LINE__}.Crash(
std::strerror(errno));
}
}
}
std::optional<Convert> GetConvertFromString(const char *x, std::size_t n) {
static const char *keywords[]{
"UNKNOWN", "NATIVE", "LITTLE_ENDIAN", "BIG_ENDIAN", "SWAP", nullptr};
switch (IdentifyValue(x, n, keywords)) {
case 0:
return Convert::Unknown;
case 1:
return Convert::Native;
case 2:
return Convert::LittleEndian;
case 3:
return Convert::BigEndian;
case 4:
return Convert::Swap;
default:
return std::nullopt;
}
}
void ExecutionEnvironment::Configure(int ac, const char *av[],
const char *env[], const EnvironmentDefaultList *envDefaults) {
argc = ac;
argv = av;
SetEnvironmentDefaults(envDefaults);
#ifdef _WIN32
envp = _environ;
#else
envp = environ;
#endif
listDirectedOutputLineLengthLimit = 79; // PGI default
defaultOutputRoundingMode =
decimal::FortranRounding::RoundNearest; // RP(==RN)
conversion = Convert::Unknown;
if (auto *x{std::getenv("FORT_FMT_RECL")}) {
char *end;
auto n{std::strtol(x, &end, 10)};
if (n > 0 && n < std::numeric_limits<int>::max() && *end == '\0') {
listDirectedOutputLineLengthLimit = n;
} else {
std::fprintf(
stderr, "Fortran runtime: FORT_FMT_RECL=%s is invalid; ignored\n", x);
}
}
if (auto *x{std::getenv("FORT_CONVERT")}) {
if (auto convert{GetConvertFromString(x, std::strlen(x))}) {
conversion = *convert;
} else {
std::fprintf(
stderr, "Fortran runtime: FORT_CONVERT=%s is invalid; ignored\n", x);
}
}
if (auto *x{std::getenv("NO_STOP_MESSAGE")}) {
char *end;
auto n{std::strtol(x, &end, 10)};
if (n >= 0 && n <= 1 && *end == '\0') {
noStopMessage = n != 0;
} else {
std::fprintf(stderr,
"Fortran runtime: NO_STOP_MESSAGE=%s is invalid; ignored\n", x);
}
}
if (auto *x{std::getenv("DEFAULT_UTF8")}) {
char *end;
auto n{std::strtol(x, &end, 10)};
if (n >= 0 && n <= 1 && *end == '\0') {
defaultUTF8 = n != 0;
} else {
std::fprintf(
stderr, "Fortran runtime: DEFAULT_UTF8=%s is invalid; ignored\n", x);
}
}
// TODO: Set RP/ROUND='PROCESSOR_DEFINED' from environment
}
const char *ExecutionEnvironment::GetEnv(
const char *name, std::size_t name_length, const Terminator &terminator) {
RUNTIME_CHECK(terminator, name && name_length);
OwningPtr<char> cStyleName{
SaveDefaultCharacter(name, name_length, terminator)};
RUNTIME_CHECK(terminator, cStyleName);
return std::getenv(cStyleName.get());
}
} // namespace Fortran::runtime
|
