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Add Windows-specific CreateTempFile() implementation

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Once again MSVC is the only compiler not supporting basic POSIX functionality.
This commit is contained in:
sfan5 2021-09-13 19:40:53 +02:00
parent b480a3e9fd
commit 4feb799b7e
1 changed files with 27 additions and 13 deletions
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40
src/filesys.cpp
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@ -24,7 +24,6 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include <cstdlib>
#include <cstring>
#include <cerrno>
#include <unistd.h>
#include <fstream>
#include "log.h"
#include "config.h"
@ -38,6 +37,7 @@ namespace fs
#define _WIN32_WINNT 0x0501
#include <windows.h>
#include <shlwapi.h>
#include <io.h>
std::vector<DirListNode> GetDirListing(const std::string &pathstring)
{
@ -178,13 +178,27 @@ std::string TempPath()
errorstream<<"GetTempPath failed, error = "<<GetLastError()<<std::endl;
return "";
}
std::vector<char> buf(bufsize);
std::string buf;
buf.resize(bufsize);
DWORD len = GetTempPath(bufsize, &buf[0]);
if(len == 0 || len > bufsize){
errorstream<<"GetTempPath failed, error = "<<GetLastError()<<std::endl;
return "";
}
return std::string(buf.begin(), buf.begin() + len);
buf.resize(len);
return buf;
}
std::string CreateTempFile()
{
std::string path = TempPath() + DIR_DELIM "MT_XXXXXX";
_mktemp_s(&path[0], path.size() + 1); // modifies path
HANDLE file = CreateFile(path.c_str(), GENERIC_WRITE, 0, nullptr,
CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, nullptr);
if (file == INVALID_HANDLE_VALUE)
return "";
CloseHandle(file);
return path;
}
#else // POSIX
@ -366,6 +380,16 @@ std::string TempPath()
#endif
}
std::string CreateTempFile()
{
std::string path = TempPath() + DIR_DELIM "MT_XXXXXX";
int fd = mkstemp(&path[0]); // modifies path
if (fd == -1)
return "";
close(fd);
return path;
}
#endif
void GetRecursiveDirs(std::vector<std::string> &dirs, const std::string &dir)
@ -813,15 +837,5 @@ bool Rename(const std::string &from, const std::string &to)
return rename(from.c_str(), to.c_str()) == 0;
}
std::string CreateTempFile()
{
std::string path = TempPath() + DIR_DELIM "MT_XXXXXX";
int fd = mkstemp(&path[0]); // modifies path
if (fd == -1)
return "";
close(fd);
return path;
}
} // namespace fs