file_helper-inl.h
3.28 KB
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
// Copyright(c) 2015-present, Gabi Melman & spdlog contributors.
// Distributed under the MIT License (http://opensource.org/licenses/MIT)
#pragma once
#ifndef SPDLOG_HEADER_ONLY
#include <spdlog/details/file_helper.h>
#endif
#include <spdlog/details/os.h>
#include <spdlog/common.h>
#include <cerrno>
#include <chrono>
#include <cstdio>
#include <string>
#include <thread>
#include <tuple>
namespace spdlog {
namespace details {
SPDLOG_INLINE file_helper::~file_helper()
{
close();
}
SPDLOG_INLINE void file_helper::open(const filename_t &fname, bool truncate)
{
close();
filename_ = fname;
auto *mode = truncate ? SPDLOG_FILENAME_T("wb") : SPDLOG_FILENAME_T("ab");
for (int tries = 0; tries < open_tries_; ++tries)
{
// create containing folder if not exists already.
os::create_dir(os::dir_name(fname));
if (!os::fopen_s(&fd_, fname, mode))
{
return;
}
details::os::sleep_for_millis(open_interval_);
}
throw_spdlog_ex("Failed opening file " + os::filename_to_str(filename_) + " for writing", errno);
}
SPDLOG_INLINE void file_helper::reopen(bool truncate)
{
if (filename_.empty())
{
throw_spdlog_ex("Failed re opening file - was not opened before");
}
this->open(filename_, truncate);
}
SPDLOG_INLINE void file_helper::flush()
{
std::fflush(fd_);
}
SPDLOG_INLINE void file_helper::close()
{
if (fd_ != nullptr)
{
std::fclose(fd_);
fd_ = nullptr;
}
}
SPDLOG_INLINE void file_helper::write(const memory_buf_t &buf)
{
size_t msg_size = buf.size();
auto data = buf.data();
if (std::fwrite(data, 1, msg_size, fd_) != msg_size)
{
throw_spdlog_ex("Failed writing to file " + os::filename_to_str(filename_), errno);
}
}
SPDLOG_INLINE size_t file_helper::size() const
{
if (fd_ == nullptr)
{
throw_spdlog_ex("Cannot use size() on closed file " + os::filename_to_str(filename_));
}
return os::filesize(fd_);
}
SPDLOG_INLINE const filename_t &file_helper::filename() const
{
return filename_;
}
//
// return file path and its extension:
//
// "mylog.txt" => ("mylog", ".txt")
// "mylog" => ("mylog", "")
// "mylog." => ("mylog.", "")
// "/dir1/dir2/mylog.txt" => ("/dir1/dir2/mylog", ".txt")
//
// the starting dot in filenames is ignored (hidden files):
//
// ".mylog" => (".mylog". "")
// "my_folder/.mylog" => ("my_folder/.mylog", "")
// "my_folder/.mylog.txt" => ("my_folder/.mylog", ".txt")
SPDLOG_INLINE std::tuple<filename_t, filename_t> file_helper::split_by_extension(const filename_t &fname)
{
auto ext_index = fname.rfind('.');
// no valid extension found - return whole path and empty string as
// extension
if (ext_index == filename_t::npos || ext_index == 0 || ext_index == fname.size() - 1)
{
return std::make_tuple(fname, filename_t());
}
// treat cases like "/etc/rc.d/somelogfile or "/abc/.hiddenfile"
auto folder_index = fname.rfind(details::os::folder_sep);
if (folder_index != filename_t::npos && folder_index >= ext_index - 1)
{
return std::make_tuple(fname, filename_t());
}
// finally - return a valid base and extension tuple
return std::make_tuple(fname.substr(0, ext_index), fname.substr(ext_index));
}
} // namespace details
} // namespace spdlog