Function ReadBinaryFile

src/luxcontrol.cpp:349–368

Read full contents of a file and return them in a std::string. * Returns a pair . * If an error occurred, status will be false, otherwise status will be true and the data will be returned in string. * * @param maxsize Puts a maximum size limit on the file that is read. If the file is larger than this, truncated data * (with len > maxsize) will be returned. */

 *         (with len > maxsize) will be returned.
 */
static std::pair<bool,std::string> ReadBinaryFile(const std::string &filename, size_t maxsize=std::numeric_limits<size_t>::max())
{
    FILE *f = fopen(filename.c_str(), "rb");
    if (f == NULL)
        return std::make_pair(false,"");
    std::string retval;
    char buffer[128];
    size_t n;
    while ((n=fread(buffer, 1, sizeof(buffer), f)) > 0) {
        // Check for reading errors so we don't return any data if we couldn't
        // read the entire file (or up to maxsize)
        if (ferror(f))
            return std::make_pair(false,"");
        retval.append(buffer, buffer+n);
        if (retval.size() > maxsize)
            break;
    }
    fclose(f);
    return std::make_pair(true,retval);
}

/** Write contents of std::string to a file.
 * @return true on success.