first checked in

symbian/inc/symgmmgr.h

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+/* -*-mode: C; fill-column: 78; c-basic-offset: 4; -*- */
+/* 
+ * Copyright 2005 by Eric House (fixin@peak.org).
+ *
+ * This program 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+
+#ifndef _SYMGMMGR_H_
+#define _SYMGMMGR_H_
+
+extern "C" {
+#include "comtypes.h"
+#include "memstream.h"
+#include "mempool.h"
+}
+
+#include <e32base.h>
+#include <eikdialg.h>
+#include <eiktxlbm.h>
+#include <eiklbv.h>
+
+typedef TBuf16<32> TGameName;
+
+/* This class tracks games, each of which is (currently) saved in a
+ * file in a hidden directory.
+ */
+class CXWGamesMgr : public CBase
+{
+ private:
+    CXWGamesMgr( MPFORMAL CCoeEnv* aCoeEnv, TFileName* aBasePath );
+
+    void BuildListL();
+    TBool DeleteFileFor( TPtrC16* aName );
+
+ public:
+    static CXWGamesMgr* NewL( MPFORMAL CCoeEnv* aCoeEnv, TFileName* aBasePath );
+
+    TInt GetNGames() const;
+    /* Will be used by dialog */
+    CDesC16Array* GetNames() const;
+
+    /* Come up with some unique name */
+    void MakeDefaultName( TGameName* aName );
+
+    void StoreGameL( const TGameName* aName, XWStreamCtxt* stream );
+    void LoadGameL( const TGameName* aName, XWStreamCtxt* stream );
+
+    TBool DeleteSelected( TInt aIndex );
+
+ private:
+
+    CDesC16ArrayFlat* iNamesList;
+    TFileName iDir;
+    CCoeEnv* iCoeEnv;
+    TInt iGameCount;
+    MPSLOT
+};
+
+#endif

symbian/src/symgmmgr.cpp

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+/* -*-mode: C; fill-column: 78; c-basic-offset: 4; -*- */
+/* 
+ * Copyright 2005 by Eric House (fixin@peak.org).
+ *
+ * This program 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#include "symgmmgr.h"
+
+extern "C" {
+#include "xwstream.h"
+}
+#include "symutil.h"
+
+_LIT( kGameTypeExt, ".xwg" );
+
+
+// private
+CXWGamesMgr::CXWGamesMgr( MPFORMAL CCoeEnv* aCoeEnv, TFileName* aBasePath )
+    : iCoeEnv(aCoeEnv), iGameCount(0)
+{
+    MPASSIGN( this->mpool, mpool );
+    
+    iDir.Copy( *aBasePath );
+    iDir.Append( _L("xwgames" ) );
+    iDir.Append( _L("\\" ) );
+} // CXWGamesMgr
+
+/* static */ CXWGamesMgr* 
+CXWGamesMgr::NewL( MPFORMAL CCoeEnv* aCoeEnv, TFileName* aBasePath )
+{
+    CXWGamesMgr* self = new CXWGamesMgr( MPPARM(mpool) aCoeEnv, aBasePath );
+    User::LeaveIfNull( self );
+
+    // Create the games directory if it doesn't already exist
+    RFs fs = aCoeEnv->FsSession();
+    TInt err = fs.MkDirAll( self->iDir );
+
+    if ( err != KErrNone && err != KErrAlreadyExists ) {
+        XP_LOGF( "MkDir failed: %d", err );
+        User::Leave( err );
+    }
+
+	err = fs.SetAtt( self->iDir, KEntryAttHidden, KEntryAttNormal );
+
+    self->BuildListL();
+
+    return self;
+} // NewL
+
+void
+CXWGamesMgr::BuildListL()
+{
+    delete iNamesList;
+
+    RFs fs = iCoeEnv->FsSession();
+
+    CDir* file_list;
+    TFindFile file_finder( fs );
+    TBuf16<6> gameNamePat( _L("*") );
+    gameNamePat.Append( kGameTypeExt );
+    TInt err = file_finder.FindWildByDir( gameNamePat, iDir, file_list );
+    // Leave it empty (null) if nothing in the list.
+    if ( err == KErrNone ) {
+        CleanupStack::PushL( file_list );
+
+        iGameCount = file_list->Count();
+        iNamesList = new (ELeave)CDesC16ArrayFlat( iGameCount );
+
+        TInt i;
+        for ( i = 0; i < file_list->Count(); i++ ) {
+            TParse fullentry;
+            fullentry.Set( (*file_list)[i].iName, &file_finder.File(), NULL );
+            iNamesList->AppendL( fullentry.Name() );
+        }
+        CleanupStack::PopAndDestroy(file_list); // file_list
+    }
+} // BuildListL
+
+TInt
+CXWGamesMgr::GetNGames() const
+{
+    if ( !iNamesList ) {
+        return 0;
+    } else {
+        return iNamesList->MdcaCount();
+    }
+} // GetNGames
+
+CDesC16Array*
+CXWGamesMgr::GetNames() const
+{
+    return iNamesList;
+} // GetNames
+
+void
+CXWGamesMgr::MakeDefaultName( TGameName* aName )
+{
+    aName->Delete( 0, 256 );
+    aName->Append( _L("game") );
+    aName->AppendNum( ++iGameCount );
+} // MakeDefaultName
+
+void 
+CXWGamesMgr::StoreGameL( const TGameName* aName, /* does not have extension */
+                         XWStreamCtxt* aStream )
+{
+    RFs fs = iCoeEnv->FsSession();
+
+    // write the stream to a file
+    TFileName nameD( iDir );
+    nameD.Append( *aName );
+    nameD.Append( kGameTypeExt );
+    RFile file;
+    TInt err = file.Replace( fs, nameD, EFileWrite );
+    XP_ASSERT( err == KErrNone );
+    User::LeaveIfError( err );
+    CleanupClosePushL(file);
+
+    TInt siz = stream_getSize( aStream );
+    TUint8* buf = new (ELeave) TUint8[siz];
+    stream_getBytes( aStream, buf, siz );
+    TPtrC8 tbuf( buf, siz );
+    err = file.Write( tbuf, siz );
+    XP_ASSERT( err == KErrNone );
+    delete [] buf;
+
+    CleanupStack::PopAndDestroy( &file ); // file
+
+    BuildListL();
+} // StoreGameL
+
+void
+CXWGamesMgr::LoadGameL( const TGameName* aName, XWStreamCtxt* aStream )
+{
+    RFs fs = iCoeEnv->FsSession();
+
+    TFileName nameD( iDir );
+    nameD.Append( *aName );
+    nameD.Append( kGameTypeExt );
+
+    RFile file;
+    User::LeaveIfError( file.Open( fs, nameD, EFileRead ) );
+    CleanupClosePushL(file);
+
+    for ( ; ; ) {
+        TBuf8<256> buf;
+        TInt err = file.Read( buf, buf.MaxLength() );
+        TInt nRead = buf.Size();
+        if ( nRead <= 0 ) {
+            break;
+        }
+        stream_putBytes( aStream, (void*)buf.Ptr(), nRead );
+    }
+
+    CleanupStack::PopAndDestroy( &file );
+} // LoadGame
+
+TBool
+CXWGamesMgr::DeleteSelected( TInt aIndex )
+{
+    return DeleteFileFor( &(*iNamesList)[aIndex] );
+} /* DeleteSelected */
+
+TBool
+CXWGamesMgr::DeleteFileFor( TPtrC16* aName )
+{
+    TFileName nameD( iDir );
+    nameD.Append( *aName );
+    nameD.Append( kGameTypeExt );
+
+
+    RFs fs = iCoeEnv->FsSession();
+    TInt err = fs.Delete( nameD );
+    TBool success = err == KErrNone;
+    if ( success ) {
+        BuildListL();
+    }
+    return success;
+}