Method save_format

src/butil/files/temp_file.cpp:102–115

}

int TempFile::save_format(const char *fmt, ...) {
    if (_reopen_if_necessary() < 0) {
        return -1;
    }
    va_list ap;
    va_start(ap, fmt);
    const int rc = vdprintf(_fd, fmt, ap);
    va_end(ap);

    close(_fd);
    _fd = -1;
    // TODO: is this right?
    return (rc < 0 ? -1 : 0);
}

// Write until all buffer was written or an error except EINTR.
// Returns: