zhipuzi_pos_windows/zhipuzi_pos_windows_server/helper/CLewaimaiString.cpp

#include "../pch/pch.h"
#include "CLewaimaiString.h"

#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>
#include <sstream>

using namespace std;
using namespace boost::archive::iterators;

CLewaimaiString::CLewaimaiString()
{
}


CLewaimaiString::~CLewaimaiString()
{
}

bool CLewaimaiString::base64_encode(const string& input, string* output)
{
	typedef base64_from_binary<transform_width<string::const_iterator, 6, 8>> Base64EncodeIterator;
	stringstream result;
	try {
		copy(Base64EncodeIterator(input.begin()), Base64EncodeIterator(input.end()), ostream_iterator<char>(result));
	}
	catch (...) {
		return false;
	}
	size_t equal_count = (3 - input.length() % 3) % 3;
	for (size_t i = 0; i < equal_count; i++)
	{
		result.put('=');
	}
	*output = result.str();
	return output->empty() == false;
}

bool CLewaimaiString::base64_decode(const string& input, string* output)
{
	typedef transform_width<binary_from_base64<string::const_iterator>, 8, 6> Base64DecodeIterator;
	stringstream result;
	try {
		copy(Base64DecodeIterator(input.begin()), Base64DecodeIterator(input.end()), ostream_iterator<char>(result));
	}
	catch (...) {
		return false;
	}
	*output = result.str();
	return output->empty() == false;
}

void CLewaimaiString::trim(string &s)
{
	if (!s.empty())
	{
		s.erase(0, s.find_first_not_of(" "));
		s.erase(s.find_last_not_of(" ") + 1);
	}
}