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#include <iostream>
#include <fstream>
#include <vector>
#include <ctime>
#include "SavEdit.h"
#define SAV_LEN 32767
void SavEdit::open()
{
/*
* Store save file in a vector.
*/
std::ifstream fs(filename, std::ios::in | std::ios::binary);
// Verify file is opened
if(!fs)
{
// TODO: translation + subroutine needed.
std::cout << "Cannot open file." << std::endl;
exit(1);
}
// Iterate through file, adding to vector.
for(int i = 0; i <= SAV_LEN; ++i)
mem.push_back(fs.get());
}
void SavEdit::read()
{
/*
* Iterates through the opened file.
* This is mostly just to make sure it
* properly loaded everything up. I will
* probably be modifying this for editing
* later.
*/
for(int i = 0; i <= SAV_LEN; ++i)
{
// offset address
std::cout.fill('0');
std::cout << "0x";
std::cout.width(4);
std::cout << std::hex << i;
std::cout << ":\t";
// print hex value
std::cout.width(2);
std::cout << std::hex << mem.at(i) << std::endl;
}
}
void SavEdit::save(std::string fname)
{
/*
* Writes the binary file using the
* offset vector.
*/
std::ofstream bfs(fname, std::ios::out | std::ios::binary);
if(!bfs)
{
// TODO: Translate + add subroutine needed.
std::cout << "Cannot create file." << std::endl;
exit(2);
}
for(int i = 0; i <= SAV_LEN; ++i)
bfs.write( (char*)&mem.at(i), 1);
}
void SavEdit::backup()
{
/*
* Create the backup of the sav file
* before editing.
*/
// Generate backup file name
std::string backup_name = "." + getFilename() + ".BAK-" + std::to_string(m_changes);
save(backup_name);
m_changes++;
}
int SavEdit::checksum()
{
/*
* Set the checksum for the new SAV
*/
// Autodetect if JP later.
bool JP = false;
// The Japanese gen 1 has a different offset
int checksum_offset = JP ? 0x3594 : 0x3523;
// Starting point for Bank One
int bankStart = 0x2598;
// Our new checksum
unsigned int check_sum = 0;
// Take all the data from bank 1, but skip the checksum.
// (Non-JP: 0x2000 to 0x3522)
for(int i = bankStart; i < checksum_offset; ++i)
check_sum += mem.at(i);
// bitwise NOT
check_sum = ~check_sum;
// bitwise AND_EQUAL
check_sum &= 0xff;
// Update the checksum.
mem.at(checksum_offset) = check_sum;
return check_sum;
}
int SavEdit::convert(char given)
{
/*
* Converts the given character to the proper value
* in the text table.
*/
// The characters are 63 over their ASCII value.
int mod = 63;
mod += (int)given;
return mod;
}
void SavEdit::modMem(int offset, char val)
{
/*
* Edits the specified offset to the given value,
* after converting the given value to it's proper
* format.
*/
// note: should this subroutine contain checks?
mem.at(offset) = convert(val);
}
void SavEdit::saveNewFile()
{
/*
* This updates the new file and saves it.
*/
save(getFilename());
}
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