buffers.zip

// buffers.cpp // // Copyright (c) 2002 Symbian Ltd. All rights reserved. // #include <e32base.h> #include <e32cons.h> LOCAL_D CConsoleBase* console; // CBufBase demo - NOT Unicode safe!! // Characters stored in 8 bits - just to demonstrate buffers void printBuffer(CBufBase* aBuffer) { _LIT(KMsgBufEquals,"buffer="); console->Printf(KMsgBufEquals); TInt i=0; TPtrC8 p=aBuffer->Ptr(i); while (p.Length() > 0) { TBuf<4> temp; // Buffer (16 bits) needed for printing temp.Copy(p); _LIT(KBufFormatString,"[%S]"); console->Printf(KBufFormatString, &temp); i+=p.Length(); p.Set(aBuffer->Ptr(i)); }; _LIT(KNewLine,"\n"); console->Printf(KNewLine); } void mainL() { CBufBase* buf=CBufSeg::NewL(4); CleanupStack::PushL(buf); // _LIT8(KTxt1,"hello!"); buf->InsertL(0,KTxt1); printBuffer(buf); _LIT8(KTxt2," world"); buf->InsertL(5,KTxt2); // "hello world!" printBuffer(buf); buf->Delete(2,7); // "held!" printBuffer(buf); buf->Compress(); printBuffer(buf); buf->ExpandL(2,7); // "he.......ld!" printBuffer(buf); _LIT8(KTxt3,"llo wor"); buf->Write(2,KTxt3); printBuffer(buf); // CleanupStack::PopAndDestroy(); // buf } // Console harness void consoleMainL() { // Get a console _LIT(KMsgTitle,"Buffers example"); console=Console::NewL(KMsgTitle,TSize(KConsFullScreen,KConsFullScreen)); CleanupStack::PushL(console); // Call function mainL(); // Wait for key _LIT(KMsgPressAnyKey,"[ press any key ]"); console->Printf(KMsgPressAnyKey); console->Getch(); // Get and ignore character // Finished with console CleanupStack::PopAndDestroy(); // Console } // Cleanup stack harness GLDEF_C TInt E32Main() { __UHEAP_MARK; CTrapCleanup* cleanupStack=CTrapCleanup::New(); TRAPD(error,consoleMainL()); __ASSERT_ALWAYS(!error, User::Panic(_L("SCMP"), error)); delete cleanupStack; __UHEAP_MARKEND; return 0; }