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encapsulate base64 encoding into class to remove static functions from global namespace

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This commit is contained in:
Dennis Luxen
2014-10-03 10:38:37 +02:00
parent 60987e6b9b
commit 0047040af9
4 changed files with 52 additions and 58 deletions
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Algorithms/ObjectToBase64.h
+48 -53
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@@ -25,8 +25,8 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef OBJECTTOBASE64_H_
#define OBJECTTOBASE64_H_
#ifndef OBJECT_TO_BASE64_H_
#define OBJECT_TO_BASE64_H_
#include "../Util/StringUtil.h"
@@ -39,61 +39,56 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <string>
#include <vector>
typedef
boost::archive::iterators::base64_from_binary<
boost::archive::iterators::transform_width<const char *, 6, 8>
> base64_t;
struct ObjectEncoder
{
using base64_t = boost::archive::iterators::base64_from_binary<
boost::archive::iterators::transform_width<const char *, 6, 8>>;
typedef
boost::archive::iterators::transform_width<
boost::archive::iterators::binary_from_base64<
std::string::const_iterator>, 8, 6
> binary_t;
using binary_t = boost::archive::iterators::transform_width<
boost::archive::iterators::binary_from_base64<std::string::const_iterator>,
8,
6>;
template<class ObjectT>
static void EncodeObjectToBase64(const ObjectT & object, std::string& encoded) {
const char * char_ptr_to_object = (const char *)&object;
std::vector<unsigned char> data(sizeof(object));
std::copy(
char_ptr_to_object,
char_ptr_to_object + sizeof(ObjectT),
data.begin()
);
template <class ObjectT>
static void EncodeToBase64(const ObjectT &object, std::string &encoded)
{
const char *char_ptr_to_object = (const char *)&object;
std::vector<unsigned char> data(sizeof(object));
std::copy(char_ptr_to_object, char_ptr_to_object + sizeof(ObjectT), data.begin());
unsigned char number_of_padded_chars = 0; // is in {0,1,2};
while(data.size() % 3 != 0) {
++number_of_padded_chars;
data.push_back(0x00);
unsigned char number_of_padded_chars = 0; // is in {0,1,2};
while (data.size() % 3 != 0)
{
++number_of_padded_chars;
data.push_back(0x00);
}
BOOST_ASSERT_MSG(0 == data.size() % 3, "base64 input data size is not a multiple of 3!");
encoded.resize(sizeof(ObjectT));
encoded.assign(base64_t(&data[0]),
base64_t(&data[0] + (data.size() - number_of_padded_chars)));
replaceAll(encoded, "+", "-");
replaceAll(encoded, "/", "_");
}
BOOST_ASSERT_MSG(
0 == data.size() % 3,
"base64 input data size is not a multiple of 3!"
);
encoded.resize(sizeof(ObjectT));
encoded.assign(
base64_t( &data[0] ),
base64_t( &data[0] + (data.size() - number_of_padded_chars) )
);
replaceAll(encoded, "+", "-");
replaceAll(encoded, "/", "_");
}
template <class ObjectT>
static void DecodeFromBase64(const std::string &input, ObjectT &object)
{
try
{
std::string encoded(input);
// replace "-" with "+" and "_" with "/"
replaceAll(encoded, "-", "+");
replaceAll(encoded, "_", "/");
template<class ObjectT>
static void DecodeObjectFromBase64(const std::string& input, ObjectT & object) {
try {
std::string encoded(input);
//replace "-" with "+" and "_" with "/"
replaceAll(encoded, "-", "+");
replaceAll(encoded, "_", "/");
std::copy(binary_t(encoded.begin()),
binary_t(encoded.begin() + encoded.length() - 1),
(char *)&object);
}
catch (...)
{
}
}
};
std::copy (
binary_t( encoded.begin() ),
binary_t( encoded.begin() + encoded.length() - 1),
(char *)&object
);
} catch(...) { }
}
#endif /* OBJECTTOBASE64_H_ */
#endif /* OBJECT_TO_BASE64_H_ */