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141 lines
3.8 KiB
141 lines
3.8 KiB
#include "memory.hpp"
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#include <iostream>
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#include <string>
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#include <cstring>
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static const std::string base64_chars =
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"abcdefghijklmnopqrstuvwxyz"
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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"0123456789+/";
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static inline bool is_base64(unsigned char c) {
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return (isalnum(c) || (c == '+') || (c == '/'));
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}
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std::string base64_encode(unsigned char const* bytes_to_encode, unsigned int in_len) {
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std::string ret;
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int i = 0;
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int j = 0;
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unsigned char char_array_3[3];
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unsigned char char_array_4[4];
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while (in_len--) {
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char_array_3[i++] = *(bytes_to_encode++);
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if (i == 3) {
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char_array_4[0] = (char_array_3[0] & 0xfc) >> 2;
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char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4);
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char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6);
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char_array_4[3] = char_array_3[2] & 0x3f;
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for(i = 0; (i <4) ; i++)
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ret += base64_chars[char_array_4[i]];
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i = 0;
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}
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}
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if (i)
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{
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for(j = i; j < 3; j++)
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char_array_3[j] = '\0';
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char_array_4[0] = ( char_array_3[0] & 0xfc) >> 2;
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char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4);
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char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6);
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for (j = 0; (j < i + 1); j++)
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ret += base64_chars[char_array_4[j]];
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while((i++ < 3))
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ret += '=';
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}
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return ret;
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}
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std::string base64_decode(std::string const& encoded_string) {
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int in_len = encoded_string.size();
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int i = 0;
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int j = 0;
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int in_ = 0;
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unsigned char char_array_4[4], char_array_3[3];
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std::string ret;
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while (in_len-- && ( encoded_string[in_] != '=') && is_base64(encoded_string[in_])) {
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char_array_4[i++] = encoded_string[in_]; in_++;
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if (i ==4) {
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for (i = 0; i <4; i++)
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char_array_4[i] = base64_chars.find(char_array_4[i]);
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char_array_3[0] = ( char_array_4[0] << 2 ) + ((char_array_4[1] & 0x30) >> 4);
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char_array_3[1] = ((char_array_4[1] & 0xf) << 4) + ((char_array_4[2] & 0x3c) >> 2);
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char_array_3[2] = ((char_array_4[2] & 0x3) << 6) + char_array_4[3];
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for (i = 0; (i < 3); i++)
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ret += char_array_3[i];
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i = 0;
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}
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}
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if (i) {
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for (j = 0; j < i; j++)
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char_array_4[j] = base64_chars.find(char_array_4[j]);
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char_array_3[0] = (char_array_4[0] << 2) + ((char_array_4[1] & 0x30) >> 4);
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char_array_3[1] = ((char_array_4[1] & 0xf) << 4) + ((char_array_4[2] & 0x3c) >> 2);
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for (j = 0; (j < i - 1); j++) ret += char_array_3[j];
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}
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return ret;
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}
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Player *Memory::loadFromCode(std::string code)
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{
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code = base64_decode(code);
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char playerName[16] = {0};
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int playerHP = 0;
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int playerAtk = 0;
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int playerDef = 0;
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int playerLevel = 0;
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int playerExp = 0;
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int result = sscanf(code.c_str(),
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"PlayerLevel=%d;PlayerExp=%d;PlayerHP=%d;PlayerAtk=%d;PlayerDef=%d;PlayerName=%15s",
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&playerLevel,
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&playerExp,
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&playerHP,
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&playerAtk,
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&playerDef,
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playerName);
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std::string playerTrueName = playerName;
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if (result == 6)
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{
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return new Player(playerTrueName, playerHP, playerAtk, playerDef, playerLevel, playerExp);
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}
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else
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{
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return nullptr;
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}
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}
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std::string Memory::saveToCode(Player *player)
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{
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char code[256];
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snprintf(code, sizeof(code),
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"PlayerLevel=%d;PlayerExp=%d;PlayerHP=%d;PlayerAtk=%d;PlayerDef=%d;PlayerName=%s",
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player->getLevel(),
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player->getExp(),
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player->getMaxHP(),
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player->getAtk(),
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player->getDef(),
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player->getName().c_str());
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return base64_encode(reinterpret_cast<unsigned char *>(code),
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strlen(code));
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}
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