Leahnaya/WfcPatcher
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mirror of https://github.com/AdmiralCurtiss/WfcPatcher.git synced 2026-09-07 10:45:48 -05:00
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Don't output a file when nothing was patched.

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Admiral H. Curtiss
2014-11-02 06:27:35 +01:00
parent 575ae4572a
commit 182a8c9e26
1 changed files with 30 additions and 13 deletions
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43
Program.cs
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@@ -11,9 +11,15 @@ namespace WfcPatcher {
#if !DEBUG
try {
#endif
PatchFile( filename, newFilename );
Console.WriteLine( "Patched to " + newFilename + "!" );
Console.WriteLine();
if ( PatchFile( filename, newFilename ) ) {
Console.WriteLine( "Patched to " + newFilename + "!" );
Console.WriteLine();
} else {
Console.WriteLine( "Found nothing to patch in " + filename + "." );
Console.WriteLine( "Are you sure this is a WFC-enabled game?" );
Console.WriteLine();
System.IO.File.Delete( newFilename );
}
#if !DEBUG
} catch ( Exception ex ) {
Console.WriteLine( "Failed patching " + filename );
@@ -33,7 +39,7 @@ namespace WfcPatcher {
return gamecode;
}
static void PatchFile( string filename, string newFilename ) {
static bool PatchFile( string filename, string newFilename ) {
Console.WriteLine( "Reading and copying " + filename + "..." );
var ndsSrc = new System.IO.FileStream( filename, System.IO.FileMode.Open );
var nds = new System.IO.FileStream( newFilename, System.IO.FileMode.Create );
@@ -54,8 +60,8 @@ namespace WfcPatcher {
uint arm7load = nds.ReadUInt32();
uint arm7size = nds.ReadUInt32();
PatchArm9( nds, arm9offset, arm9size );
PatchArm7( nds, arm7offset, arm7size );
bool modArm9 = PatchArm9( nds, arm9offset, arm9size );
bool modArm7 = PatchArm7( nds, arm7offset, arm7size );
// overlays
Console.WriteLine( "Patching Overlays..." );
@@ -65,13 +71,15 @@ namespace WfcPatcher {
uint arm7overlayoff = nds.ReadUInt32();
uint arm7overlaylen = nds.ReadUInt32();
PatchOverlay( nds, arm9overlayoff, arm9overlaylen );
PatchOverlay( nds, arm7overlayoff, arm7overlaylen );
bool modOvl9 = PatchOverlay( nds, arm9overlayoff, arm9overlaylen );
bool modOvl7 = PatchOverlay( nds, arm7overlayoff, arm7overlaylen );
nds.Close();
return modArm9 || modArm7 || modOvl9 || modOvl7;
}
static void PatchArm9( System.IO.FileStream nds, uint pos, uint len ) {
static bool PatchArm9( System.IO.FileStream nds, uint pos, uint len ) {
nds.Position = pos;
byte[] data = new byte[len];
nds.Read( data, 0, (int)len );
@@ -218,10 +226,14 @@ namespace WfcPatcher {
nds.Position = 0;
ushort headerChecksum = new Crc16().ComputeChecksum( nds, 0x15E, 0xFFFF );
nds.Write( BitConverter.GetBytes( headerChecksum ), 0, 2 );
return true;
}
return false;
}
static void PatchArm7( System.IO.FileStream nds, uint pos, uint len ) {
static bool PatchArm7( System.IO.FileStream nds, uint pos, uint len ) {
nds.Position = pos;
byte[] data = new byte[len];
nds.Read( data, 0, (int)len );
@@ -230,12 +242,14 @@ namespace WfcPatcher {
Console.WriteLine( "Replacing ARM7..." );
nds.Position = pos;
nds.Write( data, 0, data.Length );
return true;
}
return;
return false;
}
static void PatchOverlay( System.IO.FileStream nds, uint pos, uint len ) {
static bool PatchOverlay( System.IO.FileStream nds, uint pos, uint len ) {
// http://sourceforge.net/p/devkitpro/ndstool/ci/master/tree/source/ndsextract.cpp
// http://sourceforge.net/p/devkitpro/ndstool/ci/master/tree/source/overlay.h
// header compression info from http://gbatemp.net/threads/recompressing-an-overlay-file.329576/
@@ -243,6 +257,7 @@ namespace WfcPatcher {
nds.Position = 0x048;
uint fatOffset = nds.ReadUInt32();
bool modified = false;
for ( uint i = 0; i < len; i += 0x20 ) {
nds.Position = pos + i;
uint id = nds.ReadUInt32();
@@ -278,6 +293,7 @@ namespace WfcPatcher {
if ( ReplaceInData( decData ) ) {
modified = true;
int newOverlaySize;
int diff;
@@ -337,8 +353,9 @@ namespace WfcPatcher {
nds.Position = fatOffset + 8 * id + 4;
nds.Write( newPosEndData, 0, 4 );
}
}
return modified;
}
static void RemoveDebugStrings( byte[] data ) {