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Dont write directly to files but rather write and copy a tmp file

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This commit is contained in:
PilzAdam 2013-08-13 19:15:06 +02:00
parent c8930850e3
commit d718b0b34e
9 changed files with 101 additions and 69 deletions
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25
src/filesys.cpp
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@ -23,6 +23,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sstream>
#include <fstream>
#include "log.h"
namespace fs
@ -684,5 +686,28 @@ std::string RemoveRelativePathComponents(std::string path)
return path.substr(0, pos);
}
bool safeWriteToFile(const std::string &path, const std::string &content)
{
std::string tmp_file = path + ".~mt";
// Write to a tmp file
std::ofstream os(tmp_file.c_str(), std::ios::binary);
if (!os.good())
return false;
os << content;
os.flush();
os.close();
if (os.fail())
return false;
// Copy file
#ifdef _WIN32
remove(path.c_str());
return (rename(tmp_file.c_str(), path.c_str()) == 0);
#else
return (rename(tmp_file.c_str(), path.c_str()) == 0);
#endif
}
} // namespace fs