*u8: add support for checking if an archive was packed with wii.cs to allow fixing it

use case-insensitivity.  seems all the nintendo tools are running on windows and in the system menu html, paths are case-insensitive.  it doesnt seem like there is anywhere where they would need to be the other way

* lz77: support for unpacking archives larger than 0xffffff bytes

* nusdownloader: dont try to write files to cache if there is not one set

WiiQt/lz77.cpp

@@ -189,7 +189,12 @@ QByteArray LZ77::Decompress( const QByteArray &compressed, int offset )
     infile.read( (char*)&gbaheader, 4 );
 
     decomp_size = gbaheader >> 8;
+    if( !decomp_size )
+    {
+        infile.read( (char*)&decomp_size, 4 );
+    }
     quint8 text_buf[ N + 17 ];
+    //qDebug() << "decomp_size:" << decomp_size;
 
     for( i = 0; i < N - F; i++ )
 		text_buf[ i ] = 0xdf;

WiiQt/nusdownloader.cpp

@@ -332,6 +332,9 @@ QString NusDownloader::GetCachePath( quint32 idx )
     if( currentJob.version == TITLE_LATEST_VERSION || !currentJob.tid )//c'mon guy
         return QString();
 
+    if( cachePath.isEmpty() )
+        return QString();
+
     QString path = cachePath;
     if( path.endsWith( "/" ) )
         path.resize( path.size() - 1 );
@@ -486,7 +489,7 @@ void NusDownloader::StartDownload()
     //qDebug() << "NusDownloader::StartDownload" << dlJob.index;
     emit SendDownloadProgress( 0 );
     QString dlUrl = NUS_BASE_URL + dlJob.tid + "/" + dlJob.name;
-    //qDebug() << "url" << dlUrl;
+    qDebug() << "url" << dlUrl;
     currentJobText = dlUrl;
 
     QUrl url( dlUrl );

WiiQt/u8.cpp

@@ -19,6 +19,7 @@ U8::U8( bool initialize, int type, const QStringList &names )
 {
     ok = false;
     isLz77 = false;
+    wii_cs_error = false;
     paths.clear();
     nestedU8s.clear();
     fst = NULL;
@@ -876,11 +877,17 @@ void U8::CreateEntryList()
                             {
                                 qWarning() << "This archive was made by a broken tool such as U8Mii.  I'm trying to fix it, but I can't make any promises";
                                 fixWarn = true;
+                                wii_cs_error = true;
                             }
-                            fst[ current ].ParentOffset = qFromBigEndian( folder );
+#ifndef U8_DONT_FIX_RECURSION_ERRORS
+                        fst[ current ].ParentOffset = qFromBigEndian( folder );
+#endif
                         }
+//#ifndef U8_DONT_FIX_RECURSION_ERRORS
+//                        fst[ current ].ParentOffset = qFromBigEndian( folder );
+//#endif
                     }
-                    path += "/";
+                    path += '/';
                     paths << path;
                 }
                 else
@@ -924,6 +931,7 @@ void U8::CreateEntryList()
 
 U8::U8( const QByteArray &ba )
 {
+    wii_cs_error = false;
     //qDebug() << "U8::U8 dataSize:" << hex << ba.size();
     Load( ba );
 }
@@ -931,6 +939,7 @@ U8::U8( const QByteArray &ba )
 void U8::Load( const QByteArray &ba )
 {
     ok = false;
+    wii_cs_error = false;
     isLz77 = false;
     headerType = U8_Hdr_none;
     paths.clear();
@@ -1063,7 +1072,8 @@ int U8::FindEntry( const QString &str, int d )
         else
             item = str;
 
-        if( FstName( entry ) == item )
+        if( !FstName( entry ).compare( item, Qt::CaseInsensitive ) )
+        //if( FstName( entry ) == item )
         {
             if( item == str || item + "/" == str )//this is the item we are looking for
             {

WiiQt/u8.h

@@ -151,12 +151,17 @@ public:
     //reads from the fst and makes the list of paths
     void CreateEntryList();
 
+    // if this archive was packed by any of the wii.cs tools and it is not
+    // a standard banner, it will be incorrectly packed, and this will return true
+    bool IsBuggy(){ return wii_cs_error; }
 
 private:
     QByteArray data;//data starting at the U8 tag
     QStringList paths;
     bool ok;
 
+    bool wii_cs_error;
+
     //if this archive as a whole is lz77 compressed
     bool isLz77;