add AR code file parser and shit

src/ARCodeFile.cpp

+/*
+    Copyright 2016-2020 Arisotura
+
+    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"
+
+
+// TODO: import codes from other sources (usrcheat.dat, ...)
+// TODO: more user-friendly error reporting
+
+
+ARCodeFile::ARCodeFile(const char* filename)
+{
+    memset(Filename, 0, sizeof(Filename));
+    strncpy(Filename, filename, 1023);
+
+    Error = false;
+
+    Categories.clear();
+
+    FILE* f = Platform::OpenFile(Filename, "r");
+    if (!f) return;
+
+    bool isincat = false;
+    ARCodeCat curcat;
+
+    bool isincode = false;
+    ARCode curcode;
+
+    char linebuf[1024];
+    while (!feof(f))
+    {
+        fgets(linebuf, 1024, f);
+        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[^\n]", catname);
+            catname[127] = '\0';
+
+            if (ret < 1)
+            {
+                printf("AR: malformed CAT line: %s\n", start);
+                fclose(f);
+                Error = true;
+                return;
+            }
+
+            if (isincode) curcat.Codes.push_back(curcode);
+            isincode = false;
+
+            if (isincat) Categories.push_back(curcat);
+            isincat = true;
+
+            memcpy(curcat.Name, catname, 128);
+            curcat.Codes.clear();
+        }
+        else if (!strncasecmp(start, "CODE", 4))
+        {
+            int enable;
+            char codename[128];
+            int ret = sscanf(start, "CODE %d %127[^\n]", &enable, codename);
+            codename[127] = '\0';
+
+            if (ret < 2)
+            {
+                printf("AR: malformed CODE line: %s\n", start);
+                fclose(f);
+                Error = true;
+                return;
+            }
+
+            if (!isincat)
+            {
+                printf("AR: encountered CODE line with no category started\n");
+                fclose(f);
+                Error = true;
+                return;
+            }
+
+            if (isincode) curcat.Codes.push_back(curcode);
+            isincode = true;
+
+            memcpy(curcode.Name, codename, 128);
+            curcode.Enabled = enable!=0;
+            curcode.CodeLen = 0;
+        }
+        else
+        {
+            u32 c0, c1;
+            int ret = sscanf(start, "%08X %08X", &c0, &c1);
+
+            if (ret < 2)
+            {
+                printf("AR: malformed data line: %s\n", start);
+                fclose(f);
+                Error = true;
+                return;
+            }
+
+            if (!isincode)
+            {
+                printf("AR: encountered data line with no code started\n");
+                fclose(f);
+                Error = true;
+                return;
+            }
+
+            if (curcode.CodeLen >= 2*64)
+            {
+                printf("AR: code too long!\n");
+                fclose(f);
+                Error = true;
+                return;
+            }
+
+            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);
+
+    printf("PARSED OUTPUT\n");
+    for (ARCodeCatList::iterator it = Categories.begin(); it != Categories.end(); it++)
+    {
+        ARCodeCat& cat = *it;
+        printf("CAT %s\n", cat.Name);
+
+        for (ARCodeList::iterator jt = cat.Codes.begin(); jt != cat.Codes.end(); jt++)
+        {
+            ARCode& code = *jt;
+            printf("CODE %d %s\n", code.Enabled, code.Name);
+
+            for (u32 i = 0; i < code.CodeLen; i+=2)
+            {
+                printf("%08X %08X\n", code.Code[i], code.Code[i+1]);
+            }
+        }
+    }
+}
+
+ARCodeFile::~ARCodeFile()
+{
+    //
+}

src/ARCodeList.h → src/ARCodeFile.h

@@ -16,18 +16,48 @@
     with melonDS. If not, see http://www.gnu.org/licenses/.
 */
 
-#ifndef ARCODELIST_H
-#define ARCODELIST_H
+#ifndef ARCODEFILE_H
+#define ARCODEFILE_H
+
+#include <vector>
 
 #include "types.h"
 
-#define ARCL_MAJOR 1
-#define ARCL_MINOR 1
+typedef struct
+{
+    char Name[128];
+    bool Enabled;
+    u32 CodeLen;
+    u32 Code[2*64];
+
+} ARCode;
+
+typedef std::vector<ARCode> ARCodeList;
 
-class ARCodeList
+typedef struct
+{
+    char Name[128];
+    ARCodeList Codes;
+
+} ARCodeCat;
+
+typedef std::vector<ARCodeCat> ARCodeCatList;
+
+
+class ARCodeFile
 {
 public:
-    //
+    ARCodeFile(const char* filename);
+    ~ARCodeFile();
+
+    bool Error;
+
+    bool Save();
+
+    ARCodeCatList Categories;
+
+private:
+    char Filename[1024];
 };
 
-#endif // ARCODELIST_H
+#endif // ARCODEFILE_H

src/ARCodeList.cpp

-/*
-    Copyright 2016-2020 Arisotura
-
-    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 "ARCodeList.h"
-
-/*
-    Action Replay code list format
-
-    header:
-    00 - magic MLAR
-    04 - version major
-    06 - version minor
-    08 - length
-    0C - number of codes
-
-    code header:
-    00 - magic MLCD
-    04 - name length
-    08 - code length
-    0C - enable flag
-    10 - code data (UTF8 name then actual code)
-*/

src/AREngine.cpp

@@ -25,119 +25,30 @@
 namespace AREngine
 {
 
-typedef struct
-{
-    u32 Code[2 * 64]; // TODO: more sensible size for this? allocate on demand?
-    bool Enabled;
-
-} CheatEntry;
-
-// TODO: more sensible size for this? allocate on demand?
-CheatEntry CheatCodes[64];
-u32 NumCheatCodes;
-
-
-void ParseTextCode(char* text, int tlen, u32* code, int clen) // or whatever this should be named?
-{
-    u32 cur_word = 0;
-    u32 ndigits = 0;
-    u32 nin = 0;
-    u32 nout = 0;
-
-    char c;
-    while ((c = *text++) != '\0')
-    {
-        u32 val;
-        if (c >= '0' && c <= '9')
-            val = c - '0';
-        else if (c >= 'a' && c <= 'f')
-            val = c - 'a' + 0xA;
-        else if (c >= 'A' && c <= 'F')
-            val = c - 'A' + 0xA;
-        else
-            continue;
-
-        cur_word <<= 4;
-        cur_word |= val;
-
-        ndigits++;
-        if (ndigits >= 8)
-        {
-            if (nout >= clen)
-            {
-                printf("AR: code too long!\n");
-                return;
-            }
-
-            *code++ = cur_word;
-            nout++;
-
-            ndigits = 0;
-            cur_word = 0;
-        }
-
-        nin++;
-        if (nin >= tlen) break;
-    }
-
-    if (nout & 1)
-    {
-        printf("AR: code was missing one word\n");
-        if (nout >= clen)
-        {
-            printf("AR: code too long!\n");
-            return;
-        }
-        *code++ = 0;
-    }
-}
+// AR code file - frontend is responsible for managing this
+ARCodeFile* CodeFile;
 
 
 bool Init()
 {
+    CodeFile = nullptr;
+
     return true;
 }
 
 void DeInit()
 {
-    //
 }
 
 void Reset()
 {
-    memset(CheatCodes, 0, sizeof(CheatCodes));
-    NumCheatCodes = 0;
-
-    // TODO: acquire codes from a sensible source!
-    CheatEntry* entry = &CheatCodes[0];
-    u32* ptr = &entry->Code[0];
-
-    /*char* test = R"(9209D09A 00000000
-6209B468 00000000
-B209B468 00000000
-10000672 000003FF
-D2000000 00000000
-9209D09A 00000000
-94000130 FCBF0000
-6209B468 00000000
-B209B468 00000000
-200006B3 00000001
-200006B4 00000001
-D2000000 00000000
-9209D09A 00000000
-94000130 FC7F0000
-6209B468 00000000
-B209B468 00000000
-10000672 00000000
-D2000000 00000000)";
-    ParseTextCode(test, entry->Code, 2*64);
-    printf("PARSED CODE:\n");
-    for (int i = 0; i < 2*64; i+=2)
-    {
-        printf("%08X %08X\n", entry->Code[i], entry->Code[i+1]);
-    }
-    entry->Enabled = true;
-    NumCheatCodes++;*/
+    CodeFile = nullptr;
+}
+
+
+void SetCodeFile(ARCodeFile* file)
+{
+    CodeFile = file;
 }
 
 
@@ -147,9 +58,9 @@ D2000000 00000000)";
     case ((x)+0x08): case ((x)+0x09): case ((x)+0x0A): case ((x)+0x0B): \
     case ((x)+0x0C): case ((x)+0x0D): case ((x)+0x0E): case ((x)+0x0F)
 
-void RunCheat(CheatEntry* entry)
+void RunCheat(ARCode& arcode)
 {
-    u32* code = &entry->Code[0];
+    u32* code = &arcode.Code[0];
 
     u32 offset = 0;
     u32 datareg = 0;
@@ -166,9 +77,11 @@ void RunCheat(CheatEntry* entry)
 
     for (;;)
     {
+        if (code >= &arcode.Code[arcode.CodeLen])
+            break;
+
         u32 a = *code++;
         u32 b = *code++;
-        if ((a|b) == 0) break;
 
         u8 op = a >> 24;
 
@@ -179,7 +92,7 @@ void RunCheat(CheatEntry* entry)
                 if ((op & 0xF0) == 0xE0)
                 {
                     for (u32 i = 0; i < b; i += 8)
-                        *code += 2;
+                        code += 2;
                 }
 
                 continue;
@@ -428,7 +341,7 @@ void RunCheat(CheatEntry* entry)
                 if (bytesleft > 0)
                 {
                     u8* leftover = (u8*)code;
-                    *code += 2;
+                    code += 2;
                     if (bytesleft >= 4)
                     {
                         NDS::ARM7Write32(dstaddr, *(u32*)leftover); dstaddr += 4;
@@ -477,13 +390,19 @@ void RunCheat(CheatEntry* entry)
 
 void RunCheats()
 {
-    // TODO: make it disableable in general
+    if (!CodeFile) return;
 
-    for (u32 i = 0; i < NumCheatCodes; i++)
+    for (ARCodeCatList::iterator i = CodeFile->Categories.begin(); i != CodeFile->Categories.end(); i++)
     {
-        CheatEntry* entry = &CheatCodes[i];
-        if (entry->Enabled)
-            RunCheat(entry);
+        ARCodeCat& cat = *i;
+
+        for (ARCodeList::iterator j = cat.Codes.begin(); j != cat.Codes.end(); j++)
+        {
+            ARCode& code = *j;
+
+            if (code.Enabled)
+                RunCheat(code);
+        }
     }
 }
 

src/AREngine.h

@@ -19,6 +19,8 @@
 #ifndef ARENGINE_H
 #define ARENGINE_H
 
+#include "ARCodeFile.h"
+
 namespace AREngine
 {
 
@@ -26,6 +28,8 @@ bool Init();
 void DeInit();
 void Reset();
 
+void SetCodeFile(ARCodeFile* file);
+
 void RunCheats();
 
 }

src/CMakeLists.txt

@@ -3,7 +3,7 @@ project(core)
 set (CMAKE_CXX_STANDARD 14)
 
 add_library(core STATIC
-	ARCodeList.cpp
+	ARCodeFile.cpp
 	AREngine.cpp
 	ARM.cpp
 	ARM_InstrTable.h

src/frontend/qt_sdl/CheatsDialog.ui

@@ -74,6 +74,9 @@
          <height>0</height>
         </size>
        </property>
+       <property name="headerHidden">
+        <bool>true</bool>
+       </property>
       </widget>
      </item>
      <item>