summaryrefslogtreecommitdiff
path: root/lib/spdlog/fmt/bundled/posix.cc
diff options
context:
space:
mode:
Diffstat (limited to 'lib/spdlog/fmt/bundled/posix.cc')
-rw-r--r--lib/spdlog/fmt/bundled/posix.cc241
1 files changed, 241 insertions, 0 deletions
diff --git a/lib/spdlog/fmt/bundled/posix.cc b/lib/spdlog/fmt/bundled/posix.cc
new file mode 100644
index 0000000..356668c
--- /dev/null
+++ b/lib/spdlog/fmt/bundled/posix.cc
@@ -0,0 +1,241 @@
+/*
+ A C++ interface to POSIX functions.
+
+ Copyright (c) 2012 - 2016, Victor Zverovich
+ All rights reserved.
+
+ For the license information refer to format.h.
+ */
+
+// Disable bogus MSVC warnings.
+#ifndef _CRT_SECURE_NO_WARNINGS
+# define _CRT_SECURE_NO_WARNINGS
+#endif
+
+#include "posix.h"
+
+#include <limits.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#ifndef _WIN32
+# include <unistd.h>
+#else
+# ifndef WIN32_LEAN_AND_MEAN
+# define WIN32_LEAN_AND_MEAN
+# endif
+# include <windows.h>
+# include <io.h>
+
+# define O_CREAT _O_CREAT
+# define O_TRUNC _O_TRUNC
+
+# ifndef S_IRUSR
+# define S_IRUSR _S_IREAD
+# endif
+
+# ifndef S_IWUSR
+# define S_IWUSR _S_IWRITE
+# endif
+
+# ifdef __MINGW32__
+# define _SH_DENYNO 0x40
+# endif
+
+#endif // _WIN32
+
+#ifdef fileno
+# undef fileno
+#endif
+
+namespace {
+#ifdef _WIN32
+// Return type of read and write functions.
+typedef int RWResult;
+
+// On Windows the count argument to read and write is unsigned, so convert
+// it from size_t preventing integer overflow.
+inline unsigned convert_rwcount(std::size_t count) {
+ return count <= UINT_MAX ? static_cast<unsigned>(count) : UINT_MAX;
+}
+#else
+// Return type of read and write functions.
+typedef ssize_t RWResult;
+
+inline std::size_t convert_rwcount(std::size_t count) { return count; }
+#endif
+}
+
+fmt::BufferedFile::~BufferedFile() FMT_NOEXCEPT {
+ if (file_ && FMT_SYSTEM(fclose(file_)) != 0)
+ fmt::report_system_error(errno, "cannot close file");
+}
+
+fmt::BufferedFile::BufferedFile(
+ fmt::CStringRef filename, fmt::CStringRef mode) {
+ FMT_RETRY_VAL(file_, FMT_SYSTEM(fopen(filename.c_str(), mode.c_str())), 0);
+ if (!file_)
+ FMT_THROW(SystemError(errno, "cannot open file {}", filename));
+}
+
+void fmt::BufferedFile::close() {
+ if (!file_)
+ return;
+ int result = FMT_SYSTEM(fclose(file_));
+ file_ = FMT_NULL;
+ if (result != 0)
+ FMT_THROW(SystemError(errno, "cannot close file"));
+}
+
+// A macro used to prevent expansion of fileno on broken versions of MinGW.
+#define FMT_ARGS
+
+int fmt::BufferedFile::fileno() const {
+ int fd = FMT_POSIX_CALL(fileno FMT_ARGS(file_));
+ if (fd == -1)
+ FMT_THROW(SystemError(errno, "cannot get file descriptor"));
+ return fd;
+}
+
+fmt::File::File(fmt::CStringRef path, int oflag) {
+ int mode = S_IRUSR | S_IWUSR;
+#if defined(_WIN32) && !defined(__MINGW32__)
+ fd_ = -1;
+ FMT_POSIX_CALL(sopen_s(&fd_, path.c_str(), oflag, _SH_DENYNO, mode));
+#else
+ FMT_RETRY(fd_, FMT_POSIX_CALL(open(path.c_str(), oflag, mode)));
+#endif
+ if (fd_ == -1)
+ FMT_THROW(SystemError(errno, "cannot open file {}", path));
+}
+
+fmt::File::~File() FMT_NOEXCEPT {
+ // Don't retry close in case of EINTR!
+ // See http://linux.derkeiler.com/Mailing-Lists/Kernel/2005-09/3000.html
+ if (fd_ != -1 && FMT_POSIX_CALL(close(fd_)) != 0)
+ fmt::report_system_error(errno, "cannot close file");
+}
+
+void fmt::File::close() {
+ if (fd_ == -1)
+ return;
+ // Don't retry close in case of EINTR!
+ // See http://linux.derkeiler.com/Mailing-Lists/Kernel/2005-09/3000.html
+ int result = FMT_POSIX_CALL(close(fd_));
+ fd_ = -1;
+ if (result != 0)
+ FMT_THROW(SystemError(errno, "cannot close file"));
+}
+
+fmt::LongLong fmt::File::size() const {
+#ifdef _WIN32
+ // Use GetFileSize instead of GetFileSizeEx for the case when _WIN32_WINNT
+ // is less than 0x0500 as is the case with some default MinGW builds.
+ // Both functions support large file sizes.
+ DWORD size_upper = 0;
+ HANDLE handle = reinterpret_cast<HANDLE>(_get_osfhandle(fd_));
+ DWORD size_lower = FMT_SYSTEM(GetFileSize(handle, &size_upper));
+ if (size_lower == INVALID_FILE_SIZE) {
+ DWORD error = GetLastError();
+ if (error != NO_ERROR)
+ FMT_THROW(WindowsError(GetLastError(), "cannot get file size"));
+ }
+ fmt::ULongLong long_size = size_upper;
+ return (long_size << sizeof(DWORD) * CHAR_BIT) | size_lower;
+#else
+ typedef struct stat Stat;
+ Stat file_stat = Stat();
+ if (FMT_POSIX_CALL(fstat(fd_, &file_stat)) == -1)
+ FMT_THROW(SystemError(errno, "cannot get file attributes"));
+ FMT_STATIC_ASSERT(sizeof(fmt::LongLong) >= sizeof(file_stat.st_size),
+ "return type of File::size is not large enough");
+ return file_stat.st_size;
+#endif
+}
+
+std::size_t fmt::File::read(void *buffer, std::size_t count) {
+ RWResult result = 0;
+ FMT_RETRY(result, FMT_POSIX_CALL(read(fd_, buffer, convert_rwcount(count))));
+ if (result < 0)
+ FMT_THROW(SystemError(errno, "cannot read from file"));
+ return internal::to_unsigned(result);
+}
+
+std::size_t fmt::File::write(const void *buffer, std::size_t count) {
+ RWResult result = 0;
+ FMT_RETRY(result, FMT_POSIX_CALL(write(fd_, buffer, convert_rwcount(count))));
+ if (result < 0)
+ FMT_THROW(SystemError(errno, "cannot write to file"));
+ return internal::to_unsigned(result);
+}
+
+fmt::File fmt::File::dup(int fd) {
+ // Don't retry as dup doesn't return EINTR.
+ // http://pubs.opengroup.org/onlinepubs/009695399/functions/dup.html
+ int new_fd = FMT_POSIX_CALL(dup(fd));
+ if (new_fd == -1)
+ FMT_THROW(SystemError(errno, "cannot duplicate file descriptor {}", fd));
+ return File(new_fd);
+}
+
+void fmt::File::dup2(int fd) {
+ int result = 0;
+ FMT_RETRY(result, FMT_POSIX_CALL(dup2(fd_, fd)));
+ if (result == -1) {
+ FMT_THROW(SystemError(errno,
+ "cannot duplicate file descriptor {} to {}", fd_, fd));
+ }
+}
+
+void fmt::File::dup2(int fd, ErrorCode &ec) FMT_NOEXCEPT {
+ int result = 0;
+ FMT_RETRY(result, FMT_POSIX_CALL(dup2(fd_, fd)));
+ if (result == -1)
+ ec = ErrorCode(errno);
+}
+
+void fmt::File::pipe(File &read_end, File &write_end) {
+ // Close the descriptors first to make sure that assignments don't throw
+ // and there are no leaks.
+ read_end.close();
+ write_end.close();
+ int fds[2] = {};
+#ifdef _WIN32
+ // Make the default pipe capacity same as on Linux 2.6.11+.
+ enum { DEFAULT_CAPACITY = 65536 };
+ int result = FMT_POSIX_CALL(pipe(fds, DEFAULT_CAPACITY, _O_BINARY));
+#else
+ // Don't retry as the pipe function doesn't return EINTR.
+ // http://pubs.opengroup.org/onlinepubs/009696799/functions/pipe.html
+ int result = FMT_POSIX_CALL(pipe(fds));
+#endif
+ if (result != 0)
+ FMT_THROW(SystemError(errno, "cannot create pipe"));
+ // The following assignments don't throw because read_fd and write_fd
+ // are closed.
+ read_end = File(fds[0]);
+ write_end = File(fds[1]);
+}
+
+fmt::BufferedFile fmt::File::fdopen(const char *mode) {
+ // Don't retry as fdopen doesn't return EINTR.
+ FILE *f = FMT_POSIX_CALL(fdopen(fd_, mode));
+ if (!f)
+ FMT_THROW(SystemError(errno, "cannot associate stream with file descriptor"));
+ BufferedFile file(f);
+ fd_ = -1;
+ return file;
+}
+
+long fmt::getpagesize() {
+#ifdef _WIN32
+ SYSTEM_INFO si;
+ GetSystemInfo(&si);
+ return si.dwPageSize;
+#else
+ long size = FMT_POSIX_CALL(sysconf(_SC_PAGESIZE));
+ if (size < 0)
+ FMT_THROW(SystemError(errno, "cannot get memory page size"));
+ return size;
+#endif
+}