Function TryCreateDirectory

src/commons/util/util.cpp:724–733

Ignores exceptions thrown by boost's create_directory if the requested directory exists. Specifically handles case where path p exists, but it wasn't possible for the user to write to the parent directory.

//   Specifically handles case where path p exists, but it wasn't possible for the user to write to
//   the parent directory.
bool TryCreateDirectory(const boost::filesystem::path& p) {
    try {
        return boost::filesystem::create_directory(p);
    } catch (const boost::filesystem::filesystem_error&) {
        if (!boost::filesystem::exists(p) || !boost::filesystem::is_directory(p)) throw;
    }

    // create_directory didn't create the directory, it had to have existed already
    return false;
}

void FileCommit(FILE* fileout) {
    fflush(fileout);  // harmless if redundantly called