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/*
Copyright 2016-2022 melonDS team
This file is part of melonDS.
melonDS is free software: you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option)
any later version.
melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with melonDS. If not, see http://www.gnu.org/licenses/.
*/
#include <stdio.h>
#include <string.h>
#include "ARCodeFile.h"
#include "Platform.h"
using Platform::Log;
using Platform::LogLevel;
// TODO: import codes from other sources (usrcheat.dat, ...)
// TODO: more user-friendly error reporting
ARCodeFile::ARCodeFile(std::string filename)
{
Filename = filename;
Error = false;
Categories.clear();
if (!Load())
Error = true;
}
ARCodeFile::~ARCodeFile()
{
Categories.clear();
}
bool ARCodeFile::Load()
{
FILE* f = Platform::OpenFile(Filename, "r");
if (!f) return true;
Categories.clear();
bool isincat = false;
ARCodeCat curcat;
bool isincode = false;
ARCode curcode;
char linebuf[1024];
while (!feof(f))
{
if (fgets(linebuf, 1024, f) == nullptr)
break;
linebuf[1023] = '\0';
char* start = linebuf;
while (start[0]==' ' || start[0]=='\t')
start++;
if (start[0]=='#' || start[0]=='\r' || start[0]=='\n' || start[0]=='\0')
continue;
if (!strncasecmp(start, "CAT", 3))
{
char catname[128];
int ret = sscanf(start, "CAT %127[^\r\n]", catname);
catname[127] = '\0';
if (ret < 1)
{
Log(LogLevel::Error, "AR: malformed CAT line: %s\n", start);
fclose(f);
return false;
}
if (isincode) curcat.Codes.push_back(curcode);
isincode = false;
if (isincat) Categories.push_back(curcat);
isincat = true;
curcat.Name = catname;
curcat.Codes.clear();
}
else if (!strncasecmp(start, "CODE", 4))
{
int enable;
char codename[128];
int ret = sscanf(start, "CODE %d %127[^\r\n]", &enable, codename);
codename[127] = '\0';
if (ret < 2)
{
Log(LogLevel::Error, "AR: malformed CODE line: %s\n", start);
fclose(f);
return false;
}
if (!isincat)
{
Log(LogLevel::Error, "AR: encountered CODE line with no category started\n");
fclose(f);
return false;
}
if (isincode) curcat.Codes.push_back(curcode);
isincode = true;
curcode.Name = codename;
curcode.Enabled = enable!=0;
curcode.CodeLen = 0;
}
else
{
u32 c0, c1;
int ret = sscanf(start, "%08X %08X", &c0, &c1);
if (ret < 2)
{
Log(LogLevel::Error, "AR: malformed data line: %s\n", start);
fclose(f);
return false;
}
if (!isincode)
{
Log(LogLevel::Error, "AR: encountered data line with no code started\n");
fclose(f);
return false;
}
if (curcode.CodeLen >= 2*64)
{
Log(LogLevel::Error, "AR: code too long!\n");
fclose(f);
return false;
}
u32 idx = curcode.CodeLen;
curcode.Code[idx+0] = c0;
curcode.Code[idx+1] = c1;
curcode.CodeLen += 2;
}
}
if (isincode) curcat.Codes.push_back(curcode);
if (isincat) Categories.push_back(curcat);
fclose(f);
return true;
}
bool ARCodeFile::Save()
{
FILE* f = Platform::OpenFile(Filename, "w");
if (!f) return false;
for (ARCodeCatList::iterator it = Categories.begin(); it != Categories.end(); it++)
{
ARCodeCat& cat = *it;
if (it != Categories.begin()) fprintf(f, "\r\n");
fprintf(f, "CAT %s\r\n\r\n", cat.Name.c_str());
for (ARCodeList::iterator jt = cat.Codes.begin(); jt != cat.Codes.end(); jt++)
{
ARCode& code = *jt;
fprintf(f, "CODE %d %s\r\n", code.Enabled, code.Name.c_str());
for (u32 i = 0; i < code.CodeLen; i+=2)
{
fprintf(f, "%08X %08X\r\n", code.Code[i], code.Code[i+1]);
}
fprintf(f, "\r\n");
}
}
fclose(f);
return true;
}
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