Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/hybridapp_8cpp_source.html
Week 32 contribution of PDK documentation content. See release notes for details. Fixes bug Bug 3582
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<h1>examples/PIPS/hybridapp/src/hybridapp.cpp</h1><a href="hybridapp_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).</span>
<a name="l00002"></a>00002 <span class="comment">// All rights reserved.</span>
<a name="l00003"></a>00003 <span class="comment">// This component and the accompanying materials are made available</span>
<a name="l00004"></a>00004 <span class="comment">// under the terms of "Eclipse Public License v1.0"</span>
<a name="l00005"></a>00005 <span class="comment">// which accompanies this distribution, and is available</span>
<a name="l00006"></a>00006 <span class="comment">// at the URL "http://www.eclipse.org/legal/epl-v10.html".</span>
<a name="l00007"></a>00007 <span class="comment">//</span>
<a name="l00008"></a>00008 <span class="comment">// Initial Contributors:</span>
<a name="l00009"></a>00009 <span class="comment">// Nokia Corporation - initial contribution.</span>
<a name="l00010"></a>00010 <span class="comment">//</span>
<a name="l00011"></a>00011 <span class="comment">// Contributors:</span>
<a name="l00012"></a>00012 <span class="comment">//</span>
<a name="l00013"></a>00013 <span class="comment">// Description:</span>
<a name="l00014"></a>00014 <span class="comment">// Demonstrates an OE hybrid application.</span>
<a name="l00015"></a>00015 <span class="comment">//</span>
<a name="l00016"></a>00016
<a name="l00017"></a>00017
<a name="l00018"></a>00018
<a name="l00022"></a>00022 <span class="preprocessor">#include <stdio.h></span>
<a name="l00023"></a>00023 <span class="preprocessor">#include <f32file.h></span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <stdlib.h></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <string.h></span>
<a name="l00026"></a>00026
<a name="l00032"></a><a class="code" href="hybridapp_8cpp.html#a2cb8584577937cf1b54bedf5f339d32b">00032</a> <span class="keywordtype">char</span>* <a class="code" href="hybridapp_8cpp.html#a2cb8584577937cf1b54bedf5f339d32b">DescToChar</a>(<span class="keyword">const</span> TDesC& aDes)
<a name="l00033"></a>00033 {
<a name="l00034"></a>00034 <span class="comment">// Get the length of the descriptor.</span>
<a name="l00035"></a>00035 TInt length = aDes.Length();
<a name="l00036"></a>00036
<a name="l00037"></a>00037 <span class="comment">// Allocate memory to the array of characters.</span>
<a name="l00038"></a>00038 <span class="comment">// An additional byte of memory is allocated to the array as </span>
<a name="l00039"></a>00039 <span class="comment">// Symbian descriptors do not end with the end of string '\0' character.</span>
<a name="l00040"></a>00040 <span class="keywordtype">char</span>* ptr = (<span class="keywordtype">char</span>*)malloc(<span class="keyword">sizeof</span>(<span class="keywordtype">char</span>)*(length + 1));
<a name="l00041"></a>00041 <span class="keywordflow">if</span>(ptr == NULL)
<a name="l00042"></a>00042 {
<a name="l00043"></a>00043 <span class="comment">// Return NULL if memory was not allocated properly.</span>
<a name="l00044"></a>00044 <span class="keywordflow">return</span> NULL;
<a name="l00045"></a>00045 }
<a name="l00046"></a>00046 <span class="comment">// The loop index.</span>
<a name="l00047"></a>00047 TInt ix = 0;
<a name="l00048"></a>00048 <span class="keywordflow">for</span>(; ix < length; ix++)
<a name="l00049"></a>00049 {
<a name="l00050"></a>00050 <span class="comment">// Copy the contents of the descriptor into the array of characters.</span>
<a name="l00051"></a>00051 ptr[ix] = aDes[ix];
<a name="l00052"></a>00052 }
<a name="l00053"></a>00053 <span class="comment">// Append the end of string to the 'C' style string.</span>
<a name="l00054"></a>00054 ptr[ix] = <span class="charliteral">'\0'</span>;
<a name="l00055"></a>00055
<a name="l00056"></a>00056 <span class="comment">// return the pointer to the array.</span>
<a name="l00057"></a>00057 <span class="keywordflow">return</span> ptr;
<a name="l00058"></a>00058 }
<a name="l00059"></a>00059
<a name="l00065"></a><a class="code" href="hybridapp_8cpp.html#acd930fa97b9d63260709595e22a0f881">00065</a> <span class="keywordtype">void</span> <a class="code" href="hybridapp_8cpp.html#acd930fa97b9d63260709595e22a0f881">PrintDriveInfoL</a>(<span class="keyword">const</span> RFs& aFs, <span class="keyword">const</span> TInt aDriveNumber)
<a name="l00066"></a>00066 {
<a name="l00067"></a>00067 <span class="comment">// Get the drive information</span>
<a name="l00068"></a>00068 TDriveInfo driveInfo;
<a name="l00069"></a>00069 TInt errDrive = aFs.Drive(driveInfo,aDriveNumber);
<a name="l00070"></a>00070 <span class="keywordflow">if</span>(errDrive != KErrNone)
<a name="l00071"></a>00071 <span class="keywordflow">return</span>;
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <span class="comment">// Get the name of the drive.</span>
<a name="l00074"></a>00074 TBuf<KMaxFileName> driveName;
<a name="l00075"></a>00075 TInt errName = aFs.GetDriveName(aDriveNumber,driveName);
<a name="l00076"></a>00076 <span class="keywordflow">if</span>(errName != KErrNone)
<a name="l00077"></a>00077 <span class="keywordflow">return</span>;
<a name="l00078"></a>00078
<a name="l00079"></a>00079 <span class="comment">// Convert the drive name from native Symbian descriptor string to a 'C' string.</span>
<a name="l00080"></a>00080 <span class="keywordtype">char</span>* cptr = <a class="code" href="hybridapp_8cpp.html#a2cb8584577937cf1b54bedf5f339d32b">DescToChar</a>(driveName);
<a name="l00081"></a>00081 CleanupStack::PushL(cptr);
<a name="l00082"></a>00082 <span class="comment">// Check if a name has been specified for the drive.</span>
<a name="l00083"></a>00083 <span class="keywordflow">if</span>(strlen(cptr))
<a name="l00084"></a>00084 {
<a name="l00085"></a>00085 <span class="comment">// Print the name of the drive.</span>
<a name="l00086"></a>00086 printf(<span class="stringliteral">"Drive Name :%s\n"</span>,cptr);
<a name="l00087"></a>00087 }
<a name="l00088"></a>00088
<a name="l00089"></a>00089 <span class="comment">// Print the memory information for the drive.</span>
<a name="l00090"></a>00090 <span class="comment">// The memory size is defined for a drive only if it is formattable.</span>
<a name="l00091"></a>00091 <span class="keywordflow">if</span>((driveInfo.iMediaAtt & KMediaAttFormattable))
<a name="l00092"></a>00092 {
<a name="l00093"></a>00093 TChar driveLetter;
<a name="l00094"></a>00094 <span class="comment">// if drive-list entry non-zero, drive is available</span>
<a name="l00095"></a>00095 TInt errDLetter = aFs.DriveToChar(aDriveNumber,driveLetter);
<a name="l00096"></a>00096 <span class="keywordflow">if</span>(errDLetter != KErrNone)
<a name="l00097"></a>00097 <span class="keywordflow">return</span>;
<a name="l00098"></a>00098 <span class="comment">// The following line prints the drive letter followed by the hex value</span>
<a name="l00099"></a>00099 <span class="comment">// of the integer indicating that drive's attributes</span>
<a name="l00100"></a>00100 printf(<span class="stringliteral">"Drive Letter: %c\n"</span>,TUint(driveLetter));
<a name="l00101"></a>00101
<a name="l00102"></a>00102 <span class="comment">// Get the volume information for the formatted device.</span>
<a name="l00103"></a>00103 TVolumeInfo volumeInfo;
<a name="l00104"></a>00104 TInt errVol = aFs.Volume(volumeInfo,aDriveNumber);
<a name="l00105"></a>00105 <span class="keywordflow">if</span>(errVol != KErrNone)
<a name="l00106"></a>00106 <span class="keywordflow">return</span>;
<a name="l00107"></a>00107
<a name="l00108"></a>00108 <span class="comment">// Get the total size and the free space of the drive.</span>
<a name="l00109"></a>00109 TInt64 driveTotalSize = volumeInfo.iSize;
<a name="l00110"></a>00110 TInt64 driveFreeSize = volumeInfo.iFree;
<a name="l00111"></a>00111 <span class="comment">// Print the memory information for the drive.</span>
<a name="l00112"></a>00112 printf(<span class="stringliteral">"Total size of the drive: %d\n"</span>, driveTotalSize);
<a name="l00113"></a>00113 printf(<span class="stringliteral">"Free space: %d\n"</span>, driveFreeSize);
<a name="l00114"></a>00114
<a name="l00115"></a>00115 printf(<span class="stringliteral">" [press the enter key to continue]\n"</span>);
<a name="l00116"></a>00116 <span class="comment">// Wait for a key press.</span>
<a name="l00117"></a>00117 getchar();
<a name="l00118"></a>00118 }
<a name="l00119"></a>00119
<a name="l00120"></a>00120 CleanupStack::PopAndDestroy(cptr);
<a name="l00121"></a>00121 }
<a name="l00122"></a>00122
<a name="l00123"></a><a class="code" href="hybridapp_8cpp.html#a689e0bf9aa924a1d7dc108665d44736c">00123</a> LOCAL_C <span class="keywordtype">void</span> MainL()
<a name="l00124"></a>00124 {
<a name="l00125"></a>00125 <span class="comment">// The file server session.</span>
<a name="l00126"></a>00126 RFs fs;
<a name="l00127"></a>00127 <span class="comment">// Connect to the file server.</span>
<a name="l00128"></a>00128 User::LeaveIfError(fs.Connect());
<a name="l00129"></a>00129 CleanupClosePushL(fs);
<a name="l00130"></a>00130 printf(<span class="stringliteral">"\nValid drives as characters (and as numbers) are:\n"</span>);
<a name="l00131"></a>00131
<a name="l00132"></a>00132 <span class="comment">// Initialise drive number to the first drive.</span>
<a name="l00133"></a>00133 TInt driveNumber=EDriveA;
<a name="l00134"></a>00134 TChar driveLetter;
<a name="l00135"></a>00135
<a name="l00136"></a>00136 <span class="keywordflow">for</span> (; driveNumber<=EDriveZ; driveNumber++)
<a name="l00137"></a>00137 {
<a name="l00138"></a>00138 <span class="keywordflow">if</span> (fs.IsValidDrive(driveNumber))
<a name="l00139"></a>00139 {
<a name="l00140"></a>00140 <span class="comment">// Indicates that the drive exists and is valid.</span>
<a name="l00141"></a>00141 TInt errDrive = fs.DriveToChar(driveNumber,driveLetter);
<a name="l00142"></a>00142 <span class="keywordflow">if</span>(errDrive == KErrNone)
<a name="l00143"></a>00143 {
<a name="l00144"></a>00144 <span class="comment">// Print the drive letter.</span>
<a name="l00145"></a>00145 printf(<span class="stringliteral">"%c"</span>,TUint(driveLetter));
<a name="l00146"></a>00146 <span class="comment">// Convert the drive letter to the drive number.</span>
<a name="l00147"></a>00147 TInt errChar = fs.CharToDrive(driveLetter, driveNumber);
<a name="l00148"></a>00148 <span class="keywordflow">if</span>(errChar == KErrNone)
<a name="l00149"></a>00149 {
<a name="l00150"></a>00150 <span class="comment">// Print the drive number.</span>
<a name="l00151"></a>00151 printf(<span class="stringliteral">"(%d) "</span>,driveNumber);
<a name="l00152"></a>00152 }
<a name="l00153"></a>00153 }
<a name="l00154"></a>00154 }
<a name="l00155"></a>00155 }
<a name="l00156"></a>00156
<a name="l00157"></a>00157 printf(<span class="stringliteral">"\n"</span>);
<a name="l00158"></a>00158
<a name="l00159"></a>00159 <span class="comment">// Get a list of the available drives.</span>
<a name="l00160"></a>00160 TDriveList drivelist;
<a name="l00161"></a>00161 User::LeaveIfError(fs.DriveList(drivelist));
<a name="l00162"></a>00162
<a name="l00163"></a>00163 <span class="comment">// A TDriveList (the list of available drives), is an array of</span>
<a name="l00164"></a>00164 <span class="comment">// 26 bytes. Each byte with a non zero value signifies that the</span>
<a name="l00165"></a>00165 <span class="comment">// corresponding drive is available.</span>
<a name="l00166"></a>00166
<a name="l00167"></a>00167 printf(<span class="stringliteral">"\nUsing DriveList(), available drives are: \n"</span>);
<a name="l00168"></a>00168 <span class="keywordflow">for</span> (driveNumber=EDriveA; driveNumber<=EDriveZ;driveNumber++)
<a name="l00169"></a>00169 {
<a name="l00170"></a>00170 <span class="keywordflow">if</span> (drivelist[driveNumber])
<a name="l00171"></a>00171 {
<a name="l00172"></a>00172 <span class="comment">// if drive-list entry non-zero, drive is available</span>
<a name="l00173"></a>00173 TInt errDrive = fs.DriveToChar(driveNumber,driveLetter);
<a name="l00174"></a>00174 <span class="keywordflow">if</span>(errDrive == KErrNone)
<a name="l00175"></a>00175 {
<a name="l00176"></a>00176 <span class="comment">// The following line prints the drive letter followed by the hex value</span>
<a name="l00177"></a>00177 <span class="comment">// of the integer indicating that drive's attributes</span>
<a name="l00178"></a>00178 printf(<span class="stringliteral">"Drive Letter: %c\n"</span>,TUint(driveLetter));
<a name="l00179"></a>00179 printf(<span class="stringliteral">" [press the enter key to continue]\n"</span>);
<a name="l00180"></a>00180 <span class="comment">// Wait for a key press.</span>
<a name="l00181"></a>00181 getchar();
<a name="l00182"></a>00182 }
<a name="l00183"></a>00183 }
<a name="l00184"></a>00184 }
<a name="l00185"></a>00185
<a name="l00186"></a>00186 printf(<span class="stringliteral">"Memory information for formattable drives:\n"</span>);
<a name="l00187"></a>00187 printf(<span class="stringliteral">" [press the enter key to continue]\n"</span>);
<a name="l00188"></a>00188 <span class="comment">// Wait for a key press.</span>
<a name="l00189"></a>00189 getchar();
<a name="l00190"></a>00190 <span class="keywordflow">for</span> (driveNumber=EDriveA; driveNumber<=EDriveZ;driveNumber++)
<a name="l00191"></a>00191 {
<a name="l00192"></a>00192 <span class="keywordflow">if</span> (drivelist[driveNumber])
<a name="l00193"></a>00193 {
<a name="l00194"></a>00194 <a class="code" href="hybridapp_8cpp.html#acd930fa97b9d63260709595e22a0f881">PrintDriveInfoL</a>(fs,driveNumber);
<a name="l00195"></a>00195 }
<a name="l00196"></a>00196 }
<a name="l00197"></a>00197
<a name="l00198"></a>00198 CleanupStack::PopAndDestroy(&fs);
<a name="l00199"></a>00199 }
<a name="l00200"></a>00200
<a name="l00201"></a>00201
<a name="l00202"></a><a class="code" href="hybridapp_8cpp.html#a0f358e9c4355138f629b8c4f37310295">00202</a> GLDEF_C TInt E32Main()
<a name="l00203"></a>00203 {
<a name="l00204"></a>00204 <span class="comment">// Create cleanup stack</span>
<a name="l00205"></a>00205 __UHEAP_MARK;
<a name="l00206"></a>00206 CTrapCleanup* cleanup = CTrapCleanup::New();
<a name="l00207"></a>00207
<a name="l00208"></a>00208 <span class="comment">// Run application code inside TRAP harness, wait for key press when terminated</span>
<a name="l00209"></a>00209 TRAPD(mainError, MainL());
<a name="l00210"></a>00210 <span class="keywordflow">if</span> (mainError)
<a name="l00211"></a>00211 {
<a name="l00212"></a>00212 printf(<span class="stringliteral">" failed, leave code = %d"</span>, mainError);
<a name="l00213"></a>00213 }
<a name="l00214"></a>00214
<a name="l00215"></a>00215 printf(<span class="stringliteral">" [press the enter key to exit]\n"</span>);
<a name="l00216"></a>00216 getchar();
<a name="l00217"></a>00217
<a name="l00218"></a>00218 <span class="keyword">delete</span> cleanup;
<a name="l00219"></a>00219 __UHEAP_MARKEND;
<a name="l00220"></a>00220 <span class="keywordflow">return</span> KErrNone;
<a name="l00221"></a>00221 }
<a name="l00222"></a>00222
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