Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/starter_2src_2_active_bubble_sorter_8cpp_source.html
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+++ b/Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/starter_2src_2_active_bubble_sorter_8cpp_source.html	Tue Mar 30 16:16:55 2010 +0100
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+<h1>examples/ForumNokia/Symbian_OS_Basics_Lab_Exercises_v3_1/Lab_04309.cb2/starter/src/ActiveBubbleSorter.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2006 Nokia Corporation.</span>
+<a name="l00002"></a>00002 
+<a name="l00003"></a>00003 <span class="preprocessor">#include &quot;ActiveBubbleSorter.h&quot;</span>
+<a name="l00004"></a>00004 <span class="preprocessor">#include &quot;BubbleSortNotify.h&quot;</span>
+<a name="l00005"></a>00005 <span class="preprocessor">#include &lt;e32math.h&gt;</span>
+<a name="l00006"></a>00006 
+<a name="l00007"></a>00007 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KSortDataInputFileName, <span class="stringliteral">&quot;C:\\private\\0515DFCE\\sortdata_in.dat&quot;</span>);
+<a name="l00008"></a>00008 <a class="code" href="secureclientandserver_8h.html#a5eadd4429627d82193b37536d4faa03a">_LIT</a>(KSortDataOutputFileName, <span class="stringliteral">&quot;C:\\private\\0515DFCE\\sortdata_out.dat&quot;</span>);
+<a name="l00009"></a>00009 _LIT8(KNumberOutputFormat, <span class="stringliteral">&quot;%d\r\n&quot;</span>);
+<a name="l00010"></a>00010 
+<a name="l00011"></a>00011 
+<a name="l00012"></a>00012 <span class="comment">// Constructs a CActiveBubbleSorter object</span>
+<a name="l00013"></a>00013 <a class="code" href="class_c_active_bubble_sorter.html">CActiveBubbleSorter</a>* CActiveBubbleSorter::NewL()
+<a name="l00014"></a>00014     {
+<a name="l00015"></a>00015     <a class="code" href="class_c_active_bubble_sorter.html">CActiveBubbleSorter</a>* <span class="keyword">self</span> = <span class="keyword">new</span> (ELeave) <a class="code" href="class_c_active_bubble_sorter.html">CActiveBubbleSorter</a>();
+<a name="l00016"></a>00016     CleanupStack::PushL(<span class="keyword">self</span>);
+<a name="l00017"></a>00017     <span class="keyword">self</span>-&gt;ConstructL();
+<a name="l00018"></a>00018     CleanupStack::Pop(<span class="keyword">self</span>);
+<a name="l00019"></a>00019     <span class="keywordflow">return</span> <span class="keyword">self</span>;
+<a name="l00020"></a>00020     }
+<a name="l00021"></a>00021 
+<a name="l00022"></a>00022 
+<a name="l00023"></a>00023 <span class="comment">// C++ Constructor</span>
+<a name="l00024"></a>00024 CActiveBubbleSorter::CActiveBubbleSorter()
+<a name="l00025"></a>00025         : CActive(CActive::EPriorityIdle)
+<a name="l00026"></a>00026     {
+<a name="l00027"></a>00027     }
+<a name="l00028"></a>00028 
+<a name="l00029"></a>00029 
+<a name="l00030"></a>00030 <span class="comment">// C++ Destructor</span>
+<a name="l00031"></a>00031 CActiveBubbleSorter::~CActiveBubbleSorter()
+<a name="l00032"></a>00032     {
+<a name="l00033"></a>00033     }
+<a name="l00034"></a>00034 
+<a name="l00035"></a>00035 
+<a name="l00036"></a>00036 <span class="comment">// Symbian 2nd phase construction</span>
+<a name="l00037"></a>00037 <span class="keywordtype">void</span> CActiveBubbleSorter::ConstructL()
+<a name="l00038"></a>00038     {
+<a name="l00039"></a>00039     <span class="comment">// Do nothing</span>
+<a name="l00040"></a>00040     }
+<a name="l00041"></a>00041 
+<a name="l00042"></a>00042 
+<a name="l00043"></a>00043 <span class="comment">// Handles the cleanup necessary if sorting is cancelled</span>
+<a name="l00044"></a>00044 <span class="keywordtype">void</span> CActiveBubbleSorter::DoCancel()
+<a name="l00045"></a>00045     {
+<a name="l00046"></a>00046     }
+<a name="l00047"></a>00047 
+<a name="l00048"></a>00048 
+<a name="l00049"></a>00049 <span class="comment">// Handles each step of the sorting procedure</span>
+<a name="l00050"></a>00050 <span class="keywordtype">void</span> CActiveBubbleSorter::RunL()
+<a name="l00051"></a>00051     {
+<a name="l00052"></a>00052     }
+<a name="l00053"></a>00053 
+<a name="l00054"></a>00054 
+<a name="l00055"></a>00055 <span class="comment">// Called to begin sorting</span>
+<a name="l00056"></a>00056 <span class="keywordtype">void</span> CActiveBubbleSorter::StartL()
+<a name="l00057"></a>00057         {
+<a name="l00058"></a>00058         }
+<a name="l00059"></a>00059         
+<a name="l00060"></a>00060         
+<a name="l00061"></a>00061 <span class="comment">// Reads numbers from an input file into an RArray</span>
+<a name="l00062"></a>00062 <span class="keywordtype">void</span> CActiveBubbleSorter::ReadNumbersFromFileL()
+<a name="l00063"></a>00063     {
+<a name="l00064"></a>00064     <span class="comment">// Read contents of the input file into a descriptor</span>
+<a name="l00065"></a>00065     RFs fs;
+<a name="l00066"></a>00066     User::LeaveIfError(fs.Connect());
+<a name="l00067"></a>00067     CleanupClosePushL(fs);
+<a name="l00068"></a>00068     
+<a name="l00069"></a>00069     RFile file;
+<a name="l00070"></a>00070     User::LeaveIfError(file.Open(fs, KSortDataInputFileName, EFileStreamText | EFileRead));
+<a name="l00071"></a>00071     CleanupClosePushL(fs);
+<a name="l00072"></a>00072     
+<a name="l00073"></a>00073     TInt sz = 0;
+<a name="l00074"></a>00074     User::LeaveIfError(file.Size(sz));
+<a name="l00075"></a>00075     
+<a name="l00076"></a>00076     HBufC8* buf = HBufC8::NewLC(sz);
+<a name="l00077"></a>00077     TPtr8 ptr = buf-&gt;Des();
+<a name="l00078"></a>00078     User::LeaveIfError(file.Read(ptr));
+<a name="l00079"></a>00079     
+<a name="l00080"></a>00080     <span class="comment">// Extract numbers from the descriptor containing the contents of the input file</span>
+<a name="l00081"></a>00081     TLex8 lx(ptr);
+<a name="l00082"></a>00082     TBool finshed = EFalse;
+<a name="l00083"></a>00083     <span class="keywordflow">while</span> (!finshed)
+<a name="l00084"></a>00084         {
+<a name="l00085"></a>00085         <span class="keywordflow">if</span> (lx.Eos())
+<a name="l00086"></a>00086                 {
+<a name="l00087"></a>00087                 finshed = ETrue;
+<a name="l00088"></a>00088                 }
+<a name="l00089"></a>00089         <span class="keywordflow">else</span> <span class="keywordflow">if</span> ((lx.Peek()).IsDigit()) 
+<a name="l00090"></a>00090                 {
+<a name="l00091"></a>00091                 TInt num;
+<a name="l00092"></a>00092                 TInt err = lx.Val(num);
+<a name="l00093"></a>00093                 iNumbersArray.Append(num);
+<a name="l00094"></a>00094                 }
+<a name="l00095"></a>00095         <span class="keywordflow">else</span>
+<a name="l00096"></a>00096                 {
+<a name="l00097"></a>00097                 lx.Inc();
+<a name="l00098"></a>00098                 }
+<a name="l00099"></a>00099         }
+<a name="l00100"></a>00100     
+<a name="l00101"></a>00101     CleanupStack::PopAndDestroy(3); <span class="comment">// automatically closes fs and file</span>
+<a name="l00102"></a>00102     }
+<a name="l00103"></a>00103 
+<a name="l00104"></a>00104 
+<a name="l00105"></a>00105 <span class="comment">// Writes the numbers in the RArray to an output file</span>
+<a name="l00106"></a>00106 <span class="keywordtype">void</span> CActiveBubbleSorter::WriteNumbersToFileL()
+<a name="l00107"></a>00107     {
+<a name="l00108"></a>00108     RFs fs;
+<a name="l00109"></a>00109     User::LeaveIfError(fs.Connect());
+<a name="l00110"></a>00110     CleanupClosePushL(fs);
+<a name="l00111"></a>00111     
+<a name="l00112"></a>00112     TInt ret = fs.Delete(KSortDataOutputFileName);
+<a name="l00113"></a>00113     <span class="keywordflow">if</span> (!(ret == KErrNone || ret == KErrNotFound))
+<a name="l00114"></a>00114         {
+<a name="l00115"></a>00115         User::Leave(ret);
+<a name="l00116"></a>00116         } 
+<a name="l00117"></a>00117     
+<a name="l00118"></a>00118     RFile file;
+<a name="l00119"></a>00119     User::LeaveIfError(file.Create(fs, KSortDataOutputFileName, EFileStreamText | EFileWrite));
+<a name="l00120"></a>00120     CleanupClosePushL(fs);
+<a name="l00121"></a>00121     
+<a name="l00122"></a>00122     TBuf8&lt;10&gt; buf;
+<a name="l00123"></a>00123     
+<a name="l00124"></a>00124     <span class="keywordflow">for</span> (TInt i = 0; i &lt; iNumbersArray.Count(); i++)
+<a name="l00125"></a>00125         {
+<a name="l00126"></a>00126         buf.Format(KNumberOutputFormat, iNumbersArray[i]);
+<a name="l00127"></a>00127         file.Write(buf);
+<a name="l00128"></a>00128         }
+<a name="l00129"></a>00129         
+<a name="l00130"></a>00130     CleanupStack::PopAndDestroy(2); <span class="comment">// automatically closes fs and file</span>
+<a name="l00131"></a>00131     }
+<a name="l00132"></a>00132     
+<a name="l00133"></a>00133     
+<a name="l00134"></a>00134 <span class="comment">// Called in the event the RunL function leaves</span>
+<a name="l00135"></a>00135 TInt CActiveBubbleSorter::RunError(TInt aError)
+<a name="l00136"></a>00136         {
+<a name="l00137"></a>00137         iNumbersArray.Reset();
+<a name="l00138"></a>00138         iNotifier.<a class="code" href="class_m_bubble_sort_notify.html#a4efe680a413c28e6b6a7a92df6f0928c">SortComplete</a>(aError);
+<a name="l00139"></a>00139         
+<a name="l00140"></a>00140         <span class="keywordflow">return</span> KErrNone;
+<a name="l00141"></a>00141         }
+<a name="l00142"></a>00142         
+<a name="l00143"></a>00143 <span class="comment">// End of file</span>
+</pre></div></div>
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