base64_from_binary Q
I am using this sample to prove myself that base64_from_binary and binary_from_base64 can be used in my app. But I am having little problem and not able to understand whats missing Here is the sample #include "boost/archive/iterators/base64_from_binary.hpp" #include "boost/archive/iterators/binary_from_base64.hpp" #include "boost/archive/iterators/transform_width.hpp" #include <string> #include <iostream> using namespace std; using namespace boost::archive::iterators; typedef base64_from_binary< transform_width<std::string::iterator, 6, sizeof(char) * 8>
base64_t;
typedef transform_width< binary_from_base64<std::string::iterator>, sizeof(char) * 8, 6
binary_t;
int main() { string str = "Hello, world!"; cout << str << endl; string enc(base64_t(str.begin()), base64_t(str.end())); // Problem here. It works when I specify "str.end()-1" instead of "str.end()" but I loose last character after decoding. cout << enc << endl; string dec(binary_t(enc.begin()), binary_t(enc.end())); cout << dec << endl; return 0; } Will appreciate any help. I tried std::copy as well and have same problem.
I reported this problem a few months ago - apparently it is a feature that this only works on input data that is a multiple of 3 bytes long Andrew From: boost-users-bounces@lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Terdale, Shantibhushan Sent: Tuesday, August 26, 2008 12:16 PM To: boost-users@lists.boost.org Subject: [Boost-users] base64_from_binary Q I am using this sample to prove myself that base64_from_binary and binary_from_base64 can be used in my app. But I am having little problem and not able to understand whats missing Here is the sample #include "boost/archive/iterators/base64_from_binary.hpp" #include "boost/archive/iterators/binary_from_base64.hpp" #include "boost/archive/iterators/transform_width.hpp" #include <string> #include <iostream> using namespace std; using namespace boost::archive::iterators; typedef base64_from_binary< transform_width<std::string::iterator, 6, sizeof(char) * 8>
base64_t;
typedef transform_width< binary_from_base64<std::string::iterator>, sizeof(char) * 8, 6
binary_t;
int main() { string str = "Hello, world!"; cout << str << endl; string enc(base64_t(str.begin()), base64_t(str.end())); // Problem here. It works when I specify "str.end()-1" instead of "str.end()" but I loose last character after decoding. cout << enc << endl; string dec(binary_t(enc.begin()), binary_t(enc.end())); cout << dec << endl; return 0; } Will appreciate any help. I tried std::copy as well and have same problem.
Is there any possibility that we can extend this and use it for any data? Also does anyone know where is the documentation for both transform_width and base64 iterator where I can find their usage? I struggled a lot to get this example working. ________________________________ From: boost-users-bounces@lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Eames, Andrew Sent: Tuesday, August 26, 2008 1:48 PM To: boost-users@lists.boost.org Subject: Re: [Boost-users] base64_from_binary Q I reported this problem a few months ago - apparently it is a feature that this only works on input data that is a multiple of 3 bytes long Andrew From: boost-users-bounces@lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Terdale, Shantibhushan Sent: Tuesday, August 26, 2008 12:16 PM To: boost-users@lists.boost.org Subject: [Boost-users] base64_from_binary Q I am using this sample to prove myself that base64_from_binary and binary_from_base64 can be used in my app. But I am having little problem and not able to understand whats missing Here is the sample #include "boost/archive/iterators/base64_from_binary.hpp" #include "boost/archive/iterators/binary_from_base64.hpp" #include "boost/archive/iterators/transform_width.hpp" #include <string> #include <iostream> using namespace std; using namespace boost::archive::iterators; typedef base64_from_binary< transform_width<std::string::iterator, 6, sizeof(char) * 8>
base64_t;
typedef transform_width< binary_from_base64<std::string::iterator>, sizeof(char) * 8, 6
binary_t;
int main() { string str = "Hello, world!"; cout << str << endl; string enc(base64_t(str.begin()), base64_t(str.end())); // Problem here. It works when I specify "str.end()-1" instead of "str.end()" but I loose last character after decoding. cout << enc << endl; string dec(binary_t(enc.begin()), binary_t(enc.end())); cout << dec << endl; return 0; } Will appreciate any help. I tried std::copy as well and have same problem.
Any existing documentation will be found in the serialization library under Dataflow iterators. This problem has been reported. I haven't found the time to investigate the best way to fix it. Note that there are tests in the serialization library for this facility and all the dataflow iterators. Investigating these might shed some light on things. RObert Ramey "Terdale, Shantibhushan" <STerdale@doubletake.com> wrote in message news:FE4737CD2D9ABF40880815104A1A2BF301F20188@MAIL-BE-IN02.nsicorp.nsi.local... Is there any possibility that we can extend this and use it for any data? Also does anyone know where is the documentation for both transform_width and base64 iterator where I can find their usage? I struggled a lot to get this example working. ------------------------------------------------------------------------------ From: boost-users-bounces@lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Eames, Andrew Sent: Tuesday, August 26, 2008 1:48 PM To: boost-users@lists.boost.org Subject: Re: [Boost-users] base64_from_binary Q I reported this problem a few months ago - apparently it is a feature that this only works on input data that is a multiple of 3 bytes long Andrew From: boost-users-bounces@lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Terdale, Shantibhushan Sent: Tuesday, August 26, 2008 12:16 PM To: boost-users@lists.boost.org Subject: [Boost-users] base64_from_binary Q I am using this sample to prove myself that base64_from_binary and binary_from_base64 can be used in my app. But I am having little problem and not able to understand whats missing Here is the sample #include "boost/archive/iterators/base64_from_binary.hpp" #include "boost/archive/iterators/binary_from_base64.hpp" #include "boost/archive/iterators/transform_width.hpp" #include <string> #include <iostream> using namespace std; using namespace boost::archive::iterators; typedef base64_from_binary< transform_width<std::string::iterator, 6, sizeof(char) * 8>
base64_t;
typedef transform_width< binary_from_base64<std::string::iterator>, sizeof(char) * 8, 6
binary_t;
int main() { string str = "Hello, world!"; cout << str << endl; string enc(base64_t(str.begin()), base64_t(str.end())); // Problem here. It works when I specify "str.end()-1" instead of "str.end()" but I loose last character after decoding. cout << enc << endl; string dec(binary_t(enc.begin()), binary_t(enc.end())); cout << dec << endl; return 0; } Will appreciate any help. I tried std::copy as well and have same problem. ------------------------------------------------------------------------------ _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users
Hi, Well I ran into this issue too. This is the way how I've solved this: template<typename InputContainerType> inline String base64_encode(InputContainerType const & cont) { using namespace boost::archive::iterators; typedef base64_from_binary< transform_width< typename InputContainerType::const_pointer, 6, 8, boost::uint8_t > > base64_t; return String(base64_t(&cont[0]), base64_t(&cont[0] + cont.size())); } template<typename Container, typename CharT> inline Container base64_decode(std::basic_string<CharT> str) { str.append(str.size() % 4, CharT('=')); typedef boost::archive::iterators::transform_width< boost::archive::iterators::binary_from_base64<CharT *>, 8, 6, boost::uint8_t > binary_t; typename std::basic_string<CharT>::size_type pos = str.find_last_not_of(CharT('=')); // calculate how many characters we need to process pos = (pos == str.size() -1 ? str.size() : pos ); return Container(binary_t(&str[0]), binary_t(&str[0] + pos)); } So far it seemed to work for me, but still might have a bug. Regards, Vinzenz Terdale, Shantibhushan schrieb:
I am using this sample to prove myself that base64_from_binary and binary_from_base64 can be used in my app. But I am having little problem and not able to understand whats missing
Here is the sample
#include "boost/archive/iterators/base64_from_binary.hpp"
#include "boost/archive/iterators/binary_from_base64.hpp"
#include "boost/archive/iterators/transform_width.hpp"
#include <string>
#include <iostream>
using namespace std;
using namespace boost::archive::iterators;
typedef
base64_from_binary<
transform_width<std::string::iterator, 6, sizeof(char) * 8>
base64_t;
typedef
transform_width<
binary_from_base64<std::string::iterator>, sizeof(char) * 8, 6
binary_t;
int main()
{
string str = "Hello, world!";
cout << str << endl;
string enc(base64_t(str.begin()), base64_t(str.end())); *// Problem here. It works when I specify "str.end()-1" instead of "str.end()" but I loose last character after decoding.*
cout << enc << endl;
string dec(binary_t(enc.begin()), binary_t(enc.end()));
cout << dec << endl;
return 0;
}
Will appreciate any help. I tried std::copy as well and have same problem.
------------------------------------------------------------------------
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Cool. It worked for me too. I tried with different length strings and no issues. What do you think could be possible bugs? I see Robert also trying to do something like this in "basic_text_oprimitive" for the generated string instead of padding original string. -----Original Message----- From: boost-users-bounces@lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Vinzenz Feenstra Sent: Wednesday, August 27, 2008 2:26 AM To: boost-users@lists.boost.org Subject: Re: [Boost-users] base64_from_binary Q Hi, Well I ran into this issue too. This is the way how I've solved this: template<typename InputContainerType> inline String base64_encode(InputContainerType const & cont) { using namespace boost::archive::iterators; typedef base64_from_binary< transform_width< typename InputContainerType::const_pointer, 6, 8, boost::uint8_t > > base64_t; return String(base64_t(&cont[0]), base64_t(&cont[0] + cont.size())); } template<typename Container, typename CharT> inline Container base64_decode(std::basic_string<CharT> str) { str.append(str.size() % 4, CharT('=')); typedef boost::archive::iterators::transform_width< boost::archive::iterators::binary_from_base64<CharT *>, 8, 6, boost::uint8_t > binary_t; typename std::basic_string<CharT>::size_type pos = str.find_last_not_of(CharT('=')); // calculate how many characters we need to process pos = (pos == str.size() -1 ? str.size() : pos ); return Container(binary_t(&str[0]), binary_t(&str[0] + pos)); } So far it seemed to work for me, but still might have a bug. Regards, Vinzenz Terdale, Shantibhushan schrieb:
I am using this sample to prove myself that base64_from_binary and binary_from_base64 can be used in my app. But I am having little problem and not able to understand whats missing
Here is the sample
#include "boost/archive/iterators/base64_from_binary.hpp"
#include "boost/archive/iterators/binary_from_base64.hpp"
#include "boost/archive/iterators/transform_width.hpp"
#include <string>
#include <iostream>
using namespace std;
using namespace boost::archive::iterators;
typedef
base64_from_binary<
transform_width<std::string::iterator, 6, sizeof(char) * 8>
base64_t;
typedef
transform_width<
binary_from_base64<std::string::iterator>, sizeof(char) * 8, 6
binary_t;
int main()
{
string str = "Hello, world!";
cout << str << endl;
string enc(base64_t(str.begin()), base64_t(str.end())); *// Problem
here. It works when I specify "str.end()-1" instead of "str.end()" but
I loose last character after decoding.*
cout << enc << endl;
string dec(binary_t(enc.begin()), binary_t(enc.end()));
cout << dec << endl;
return 0;
}
Will appreciate any help. I tried std::copy as well and have same problem.
---------------------------------------------------------------------- --
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_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users
participants (4)
-
Eames, Andrew -
Robert Ramey -
Terdale, Shantibhushan -
Vinzenz Feenstra