If you have a proper binary buffer, you should be able to pass it to
option.ParseFromString(binaryString).
But your HexString2BinaryString() function is not correct. You need to
convert each pair of hex digits into a single binary byte. Right now you
are converting the hex digits into a human-readable text string of binary
digits, which is not what you want.
On Wednesday, January 3, 2018 at 4:02:40 AM UTC-8, 정등혁 wrote:
>
> #include <iostream>
> #include <fstream>
> #include <string>
> #include "EncodeMessage.pb.h"
> using namespace std;
>
> string HexString2BinaryString(string sHex)
> {
> string sReturn = "";
> int sLen = sHex.length();
> for (int i = 0; i < sLen; ++i)
> {
> switch (sHex[i])
> {
> case '0': sReturn.append("0000"); break;
> case '1': sReturn.append("0001"); break;
> case '2': sReturn.append("0010"); break;
> case '3': sReturn.append("0011"); break;
> case '4': sReturn.append("0100"); break;
> case '5': sReturn.append("0101"); break;
> case '6': sReturn.append("0110"); break;
> case '7': sReturn.append("0111"); break;
> case '8': sReturn.append("1000"); break;
> case '9': sReturn.append("1001"); break;
> case 'a': sReturn.append("1010"); break;
> case 'b': sReturn.append("1011"); break;
> case 'c': sReturn.append("1100"); break;
> case 'd': sReturn.append("1101"); break;
> case 'e': sReturn.append("1110"); break;
> case 'f': sReturn.append("1111"); break;
> }
> }
>
> int rLen = sReturn.length();
> int i;
> for (i = 0; i < rLen; i++)
> {
> if (sReturn[i] != '0')
> {
> break;
> }
> }
> sReturn.replace(0, i, "");
>
> return sReturn;
> }
>
> // Main function: Reads the entire address book from a file and prints all
> // the information inside.
> int main(int argc, char* argv[]) {
> // Verify that the version of the library that we linked against is
> // compatible with the version of the headers we compiled against.
> GOOGLE_PROTOBUF_VERIFY_VERSION;
>
> // Inset hex type string -> change to binary string
> string hexStr;
> cin >> hexStr;
>
> string binaryStr = HexString2BinaryString(hexStr);
> //cout << binaryStr << endl;
>
> machineInfo::msgOption option;
>
> {
> // ** I want to use 'binaryStr' variable to parse 'option' variable
> // can you help me out?
>
> //fstream input("output.bin", ios::in | ios::binary);
> //if (!option.ParseFromIstream(&input)) {
> // cerr << "Failed to parse address book." << endl;
> // return -1;
> //}
> }
> // Optional: Delete all global objects allocated by libprotobuf.
> google::protobuf::ShutdownProtobufLibrary();
>
> return 0;
> }
>
> I want to parse binary string into message 'option'
> Can I make message without using "output.bin" file, by using 'binary
> string' I made in cpp.
>
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