c语言file头文件unstd,C++，Base64编解码字符串或文件

#include #include#include"Base64Encoder.h"#include"Base64Decoder.h"

using namespacestd;voidencodeDemo();voiddecodeDemo();intmain()

{

encodeDemo();

decodeDemo();

system("pause");return 0;

}voidencodeDemo()

{const char *text = "John Rambo";

Base64Encoder encoder;const string &encodedText =encoder.encode(text);

cout<< encodedText <

ifstream ifs(inputFilename, ifstream::binary);if(ifs)

{string encodedFilename(inputFilename + ".txt");

ofstream ofs(encodedFilename, ofstream::binary);if(ofs)

{

streamsize numberOfBytesRead;intnumberOfBytesEncoded;

constexprint inputBufferSize = 10 * 1024;charinputBuffer[inputBufferSize];char encodedBuffer[inputBufferSize * 2];while (!ifs.eof())

{

numberOfBytesRead=ifs.read(inputBuffer, inputBufferSize).gcount();

numberOfBytesEncoded=encoder.encode(inputBuffer, numberOfBytesRead, encodedBuffer);

ofs.write(encodedBuffer, numberOfBytesEncoded);

}

numberOfBytesEncoded=encoder.encodeEnd(encodedBuffer);

ofs.write(encodedBuffer, numberOfBytesEncoded);

}elsecout<< "Cannot open file:" << encodedFilename <

}elsecout<< "Cannot open file:" << inputFilename <

}voiddecodeDemo()

{

Base64Decoder decoder;const string &decodedText = decoder.decode("QWxsIGlzIHdlbGwh");

cout<< decodedText <

ifstream ifs(filename, ifstream::binary);if(ifs)

{

filename= "android_docoment";

ofstream ofs(filename, ofstream::out |ofstream::binary);if(ofs)

{

streamsize numberOfBytesRead;intnumberOfBytesDecoded;

constexprint bufferSize = 10 * 1024;charinputBuffer[bufferSize];chardecodedBuffer[bufferSize];while (!ifs.eof())

{

numberOfBytesRead= ifs.read(inputBuffer, 1024).gcount();

numberOfBytesDecoded=decoder.decode(inputBuffer, numberOfBytesRead, decodedBuffer);

ofs.write(decodedBuffer, numberOfBytesDecoded);

}

}elsecout<< "Cannot open file:" << filename <

}elsecout<< "Cannot open file:" << filename <

}