153 lines
4.6 KiB
C++
153 lines
4.6 KiB
C++
// 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/common.h>
|
|
#include <spdlog/details/os.h>
|
|
|
|
#include <cerrno>
|
|
#include <chrono>
|
|
#include <cstdio>
|
|
#include <string>
|
|
#include <thread>
|
|
#include <tuple>
|
|
|
|
namespace spdlog {
|
|
namespace details {
|
|
|
|
SPDLOG_INLINE file_helper::file_helper(const file_event_handlers &event_handlers)
|
|
: event_handlers_(event_handlers) {}
|
|
|
|
SPDLOG_INLINE file_helper::~file_helper() { close(); }
|
|
|
|
SPDLOG_INLINE void file_helper::open(const filename_t &fname, bool truncate) {
|
|
close();
|
|
filename_ = fname;
|
|
|
|
auto *mode = SPDLOG_FILENAME_T("ab");
|
|
auto *trunc_mode = SPDLOG_FILENAME_T("wb");
|
|
|
|
if (event_handlers_.before_open) {
|
|
event_handlers_.before_open(filename_);
|
|
}
|
|
for (int tries = 0; tries < open_tries_; ++tries) {
|
|
// create containing folder if not exists already.
|
|
os::create_dir(os::dir_name(fname));
|
|
if (truncate) {
|
|
// Truncate by opening-and-closing a tmp file in "wb" mode, always
|
|
// opening the actual log-we-write-to in "ab" mode, since that
|
|
// interacts more politely with eternal processes that might
|
|
// rotate/truncate the file underneath us.
|
|
std::FILE *tmp;
|
|
if (os::fopen_s(&tmp, fname, trunc_mode)) {
|
|
continue;
|
|
}
|
|
std::fclose(tmp);
|
|
}
|
|
if (!os::fopen_s(&fd_, fname, mode)) {
|
|
if (event_handlers_.after_open) {
|
|
event_handlers_.after_open(filename_, fd_);
|
|
}
|
|
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() {
|
|
if (std::fflush(fd_) != 0) {
|
|
throw_spdlog_ex("Failed flush to file " + os::filename_to_str(filename_), errno);
|
|
}
|
|
}
|
|
|
|
SPDLOG_INLINE void file_helper::sync() {
|
|
if (!os::fsync(fd_)) {
|
|
throw_spdlog_ex("Failed to fsync file " + os::filename_to_str(filename_), errno);
|
|
}
|
|
}
|
|
|
|
SPDLOG_INLINE void file_helper::close() {
|
|
if (fd_ != nullptr) {
|
|
if (event_handlers_.before_close) {
|
|
event_handlers_.before_close(filename_, fd_);
|
|
}
|
|
|
|
std::fclose(fd_);
|
|
fd_ = nullptr;
|
|
|
|
if (event_handlers_.after_close) {
|
|
event_handlers_.after_close(filename_);
|
|
}
|
|
}
|
|
}
|
|
|
|
SPDLOG_INLINE void file_helper::write(const memory_buf_t &buf) {
|
|
if(fd_ == nullptr) return;
|
|
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.find_last_of(details::os::folder_seps_filename);
|
|
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
|