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
140
|
// Copyright 2017 The Abseil Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "absl/time/internal/test_util.h"
#include <algorithm>
#include <cstddef>
#include <cstring>
#include <memory>
#include "absl/base/config.h"
#include "absl/base/internal/raw_logging.h"
#include "absl/time/internal/cctz/include/cctz/zone_info_source.h"
namespace cctz = absl::time_internal::cctz;
namespace absl {
ABSL_NAMESPACE_BEGIN
namespace time_internal {
TimeZone LoadTimeZone(const std::string& name) {
TimeZone tz;
ABSL_RAW_CHECK(LoadTimeZone(name, &tz), name.c_str());
return tz;
}
} // namespace time_internal
ABSL_NAMESPACE_END
} // namespace absl
namespace absl {
ABSL_NAMESPACE_BEGIN
namespace time_internal {
namespace cctz_extension {
namespace {
// Embed the zoneinfo data for time zones used during tests and benchmarks.
// The data was generated using "xxd -i zoneinfo-file". There is no need
// to update the data as long as the tests do not depend on recent changes
// (and the past rules remain the same).
#include "absl/time/internal/zoneinfo.inc"
const struct ZoneInfo {
const char* name;
const char* data;
std::size_t length;
} kZoneInfo[] = {
// The three real time zones used by :time_test and :time_benchmark.
{"America/Los_Angeles", //
reinterpret_cast<char*>(America_Los_Angeles), America_Los_Angeles_len},
{"America/New_York", //
reinterpret_cast<char*>(America_New_York), America_New_York_len},
{"Australia/Sydney", //
reinterpret_cast<char*>(Australia_Sydney), Australia_Sydney_len},
// Other zones named in tests but which should fail to load.
{"Invalid/TimeZone", nullptr, 0},
{"", nullptr, 0},
// Also allow for loading the local time zone under TZ=US/Pacific.
{"US/Pacific", //
reinterpret_cast<char*>(America_Los_Angeles), America_Los_Angeles_len},
// Allows use of the local time zone from a system-specific location.
#ifdef _MSC_VER
{"localtime", //
reinterpret_cast<char*>(America_Los_Angeles), America_Los_Angeles_len},
#else
{"/etc/localtime", //
reinterpret_cast<char*>(America_Los_Angeles), America_Los_Angeles_len},
#endif
};
class TestZoneInfoSource : public cctz::ZoneInfoSource {
public:
TestZoneInfoSource(const char* data, std::size_t size)
: data_(data), end_(data + size) {}
std::size_t Read(void* ptr, std::size_t size) override {
const std::size_t len = std::min<std::size_t>(size, end_ - data_);
memcpy(ptr, data_, len);
data_ += len;
return len;
}
int Skip(std::size_t offset) override {
data_ += std::min<std::size_t>(offset, end_ - data_);
return 0;
}
private:
const char* data_;
const char* const end_;
};
std::unique_ptr<cctz::ZoneInfoSource> EmbeddedTestZone(const char* data,
std::size_t size) {
return std::unique_ptr<cctz::ZoneInfoSource>(
new TestZoneInfoSource(data, size));
}
std::unique_ptr<cctz::ZoneInfoSource> TestFactory(
const std::string& name,
const std::function<std::unique_ptr<cctz::ZoneInfoSource>(
const std::string& name)>& /*fallback_factory*/) {
for (const ZoneInfo& zoneinfo : kZoneInfo) {
if (name == zoneinfo.name) {
if (zoneinfo.data == nullptr) return nullptr;
return EmbeddedTestZone(zoneinfo.data, zoneinfo.length);
}
}
// The embedded tzdata database knows nothing about this zone. Return
// something so the tests can proceed.
return EmbeddedTestZone(reinterpret_cast<char*>(America_Los_Angeles),
America_Los_Angeles_len);
}
} // namespace
#if !defined(__MINGW32__)
// MinGW does not support the weak symbol extension mechanism.
ZoneInfoSourceFactory zone_info_source_factory = TestFactory;
#endif
} // namespace cctz_extension
} // namespace time_internal
ABSL_NAMESPACE_END
} // namespace absl
|
