|
1 /* |
|
2 * Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies). |
|
3 * All rights reserved. |
|
4 * This component and the accompanying materials are made available |
|
5 * under the terms of "Eclipse Public License v1.0" |
|
6 * which accompanies this distribution, and is available |
|
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
8 * |
|
9 * Initial Contributors: |
|
10 * Nokia Corporation - initial contribution. |
|
11 * |
|
12 * Contributors: |
|
13 * |
|
14 * Description: Folder scanning class to scan files in the file system |
|
15 * |
|
16 */ |
|
17 |
|
18 #include <e32base.h> |
|
19 #include <mpxlog.h> |
|
20 #include "mpxfolderscanner.h" |
|
21 #include "mpxfileadditionobserver.h" |
|
22 #include "mpxfilescanstateobserver.h" |
|
23 #include "mpxfhcommon.h" |
|
24 |
|
25 // CONSTANTS |
|
26 const TInt KFileNumBreakCount = 5; |
|
27 |
|
28 // ======== LOCAL FUNCTIONS ======== |
|
29 |
|
30 // --------------------------------------------------------------------------- |
|
31 // RArray compare function to compare strings |
|
32 // --------------------------------------------------------------------------- |
|
33 // |
|
34 static TInt CompareString(const TPath& aFirst, |
|
35 const TPath& aSecond) |
|
36 { |
|
37 return aFirst.Compare( aSecond ); |
|
38 } |
|
39 |
|
40 // ======== MEMBER FUNCTIONS ======== |
|
41 |
|
42 // --------------------------------------------------------------------------- |
|
43 // Constructor |
|
44 // --------------------------------------------------------------------------- |
|
45 // |
|
46 CMPXFolderScanner::CMPXFolderScanner( MMPXFileAdditionObserver& aObserver, |
|
47 MMPXFileScanStateObserver& aStateObs, |
|
48 RFs& aFs ) : CActive(EPriorityNull), |
|
49 iObserver( aObserver ), |
|
50 iStateObserver( aStateObs ), |
|
51 iFs( aFs ) |
|
52 |
|
53 { |
|
54 CActiveScheduler::Add(this); |
|
55 } |
|
56 |
|
57 // --------------------------------------------------------------------------- |
|
58 // 2nd Phase Constructor |
|
59 // --------------------------------------------------------------------------- |
|
60 // |
|
61 void CMPXFolderScanner::ConstructL() |
|
62 { |
|
63 iDirScan = CDirScan::NewL(iFs); |
|
64 } |
|
65 |
|
66 // --------------------------------------------------------------------------- |
|
67 // Two Phased Constructor |
|
68 // --------------------------------------------------------------------------- |
|
69 // |
|
70 CMPXFolderScanner* CMPXFolderScanner::NewL( MMPXFileAdditionObserver& aObserver, |
|
71 MMPXFileScanStateObserver& aStateObs, |
|
72 RFs& aFs ) |
|
73 { |
|
74 CMPXFolderScanner* self = new( ELeave ) CMPXFolderScanner( aObserver, |
|
75 aStateObs, |
|
76 aFs ); |
|
77 CleanupStack::PushL( self ); |
|
78 self->ConstructL(); |
|
79 CleanupStack::Pop( self ); |
|
80 return self; |
|
81 } |
|
82 |
|
83 |
|
84 // --------------------------------------------------------------------------- |
|
85 // Destructor |
|
86 // --------------------------------------------------------------------------- |
|
87 // |
|
88 CMPXFolderScanner::~CMPXFolderScanner() |
|
89 { |
|
90 Cancel(); |
|
91 |
|
92 delete iDirScan; |
|
93 delete iDir; |
|
94 |
|
95 iDrivesToScan.Close(); |
|
96 } |
|
97 |
|
98 // --------------------------------------------------------------------------- |
|
99 // Scans a list of drives for files |
|
100 // --------------------------------------------------------------------------- |
|
101 // |
|
102 void CMPXFolderScanner::ScanL( RArray<TPath>& aDrives ) |
|
103 { |
|
104 MPX_DEBUG1("CMPXFolderScanner::ScanL <---"); |
|
105 |
|
106 // Copy all the other drives we want to scan |
|
107 // |
|
108 TInt count( aDrives.Count() ); |
|
109 for( TInt i=0; i<count; ++i ) |
|
110 { |
|
111 // Check if we are already scanning this drive |
|
112 TInt found( iDrivesToScan.FindInOrder( aDrives[i], CompareString ) ); |
|
113 if( found == KErrNotFound ) |
|
114 { |
|
115 iDrivesToScan.Append( aDrives[i] ); |
|
116 } |
|
117 } |
|
118 |
|
119 // If we were already scanning, don't do it again |
|
120 // |
|
121 if( !iScanning ) |
|
122 { |
|
123 // Setup the next drive to scan |
|
124 // |
|
125 if( !SetupNextDriveToScanL() ) |
|
126 { |
|
127 // Kick off the scanning |
|
128 iStatus = KRequestPending; |
|
129 SetActive(); |
|
130 TRequestStatus* status = &iStatus; |
|
131 User::RequestComplete( status, KErrNone ); |
|
132 |
|
133 // We've started scanning |
|
134 iScanning = ETrue; |
|
135 } |
|
136 else |
|
137 { |
|
138 // Nothing to scan |
|
139 DoScanCompleteL(KErrNone); |
|
140 } |
|
141 } |
|
142 MPX_DEBUG1("CMPXFolderScanner::ScanL --->"); |
|
143 } |
|
144 |
|
145 // --------------------------------------------------------------------------- |
|
146 // Continue Scanning for more files |
|
147 // --------------------------------------------------------------------------- |
|
148 // |
|
149 TBool CMPXFolderScanner::DoScanL() |
|
150 { |
|
151 MPX_DEBUG1("CMPXFolderScanner::DoScanL <---"); |
|
152 TBool done (EFalse); |
|
153 |
|
154 // Check each file in each directory |
|
155 TInt numFiles( iDir->Count() ); |
|
156 while( iCount < numFiles ) |
|
157 { |
|
158 TEntry entry = (*iDir)[iCount]; |
|
159 |
|
160 // Construct the full path and file name |
|
161 TParse fullEntry; |
|
162 TPtrC dirPath(iDirScan->FullPath()); |
|
163 fullEntry.Set(entry.iName, &dirPath, NULL); |
|
164 |
|
165 TPtrC fullname = fullEntry.FullName(); |
|
166 TInt index = iObserver.IsMediaFileL( fullname ); |
|
167 if( KErrNotFound != index ) |
|
168 { |
|
169 iObserver.HandleFileAdditionL( fullname, index ); |
|
170 } |
|
171 |
|
172 // Break if we have scanned enough files |
|
173 // |
|
174 ++iCount; |
|
175 if( iCount%KFileNumBreakCount == 0 ) |
|
176 { |
|
177 return EFalse; |
|
178 } |
|
179 } |
|
180 |
|
181 // All files from this directory scanned, so move onto next |
|
182 // |
|
183 TInt err( KErrNone ); |
|
184 TBool blocked (EFalse); |
|
185 if( iCount == numFiles ) |
|
186 { |
|
187 // Get next Folder |
|
188 // |
|
189 iCount = 0; |
|
190 delete iDir; |
|
191 iDir = NULL; |
|
192 do |
|
193 { |
|
194 TRAP(err, iDirScan->NextL(iDir)); |
|
195 blocked = iObserver.IsPathBlockedL( iDirScan->FullPath() ); |
|
196 if( blocked ) |
|
197 { |
|
198 delete iDir; |
|
199 iDir = NULL; |
|
200 } |
|
201 if( err == KErrNotReady ) |
|
202 { |
|
203 delete iDir; |
|
204 iDir = NULL; |
|
205 break; |
|
206 } |
|
207 } |
|
208 while ( err == KErrPathNotFound || blocked ); |
|
209 |
|
210 // No more directories to scan on this drive |
|
211 // |
|
212 if( !iDir ) |
|
213 { |
|
214 done = SetupNextDriveToScanL(); |
|
215 } |
|
216 } |
|
217 |
|
218 MPX_DEBUG1("CMPXFolderScanner::DoScanL --->"); |
|
219 return done; |
|
220 } |
|
221 |
|
222 // --------------------------------------------------------------------------- |
|
223 // Setup the object to scan the next directory |
|
224 // --------------------------------------------------------------------------- |
|
225 // |
|
226 TBool CMPXFolderScanner::SetupNextDriveToScanL() |
|
227 { |
|
228 MPX_DEBUG1("CMPXFolderScanner::SetupNextDriveToScanL <---"); |
|
229 |
|
230 TBool done(EFalse); |
|
231 TBool blocked(EFalse); |
|
232 // Scan next drive |
|
233 while( iDir == NULL && !done ) |
|
234 { |
|
235 if( !iDrivesToScan.Count() ) |
|
236 { |
|
237 // No more drives or folders that we are interested in |
|
238 done = ETrue; |
|
239 } |
|
240 else |
|
241 { |
|
242 iDirScan->SetScanDataL(iDrivesToScan[0], KEntryAttNormal, ESortNone); |
|
243 iCount = 0; |
|
244 TInt err(KErrNone); |
|
245 do |
|
246 { |
|
247 MPX_DEBUG1("CMPXFolderScanner::SetupNextDriveToScanL iDirScan->NexL()"); |
|
248 TRAP(err, iDirScan->NextL(iDir)); |
|
249 MPX_DEBUG1("CMPXFolderScanner::SetupNextDriveToScanL path blocked?"); |
|
250 blocked = iObserver.IsPathBlockedL( iDirScan->FullPath() ); |
|
251 MPX_DEBUG2("CMPXFolderScanner::SetupNextDriveToScanL path blocked %i", blocked); |
|
252 if( blocked ) |
|
253 { |
|
254 delete iDir; |
|
255 iDir = NULL; |
|
256 } |
|
257 } |
|
258 while (err == KErrPathNotFound || blocked ); |
|
259 |
|
260 // If there was something to scan |
|
261 // |
|
262 if( iDir != NULL ) |
|
263 { |
|
264 // Inform Observer of the new drive that we are scanning |
|
265 iObserver.HandleOpenDriveL( ::ExtractDrive(iDrivesToScan[0]), |
|
266 iDrivesToScan[0] ); |
|
267 } |
|
268 |
|
269 // Remove the 0th element |
|
270 iDrivesToScan.Remove(0); |
|
271 iDrivesToScan.Compress(); |
|
272 } |
|
273 } |
|
274 |
|
275 |
|
276 MPX_DEBUG1("CMPXFolderScanner::SetupNextDriveToScanL --->"); |
|
277 return done; |
|
278 } |
|
279 |
|
280 // --------------------------------------------------------------------------- |
|
281 // Handle when scanning is complete |
|
282 // --------------------------------------------------------------------------- |
|
283 // |
|
284 void CMPXFolderScanner::DoScanCompleteL( TInt aErr ) |
|
285 { |
|
286 MPX_DEBUG1("CMPXFolderScanner::DoScanCompleteL <---"); |
|
287 |
|
288 // Reset all arrays and data |
|
289 iDrivesToScan.Reset(); |
|
290 |
|
291 // All done! |
|
292 iScanning = EFalse; |
|
293 |
|
294 delete iDir; |
|
295 iDir = NULL; |
|
296 |
|
297 // Callback to observer |
|
298 iStateObserver.HandleScanStateCompleteL( MMPXFileScanStateObserver::EScanFiles, |
|
299 aErr ); |
|
300 |
|
301 MPX_DEBUG1("CMPXFolderScanner::DoScanCompleteL --->"); |
|
302 } |
|
303 |
|
304 // --------------------------------------------------------------------------- |
|
305 // From CActive |
|
306 // --------------------------------------------------------------------------- |
|
307 // |
|
308 void CMPXFolderScanner::RunL() |
|
309 { |
|
310 MPX_DEBUG1("CMPXFolderScanner::RunL <---"); |
|
311 |
|
312 // Do more scanning |
|
313 TBool done(EFalse); |
|
314 TRAPD( err, done = DoScanL() ); |
|
315 |
|
316 // We are all done |
|
317 // |
|
318 if( KErrNone != err || done ) |
|
319 { |
|
320 DoScanCompleteL( err ); |
|
321 } |
|
322 else // if( !done ) |
|
323 { |
|
324 MPX_DEBUG1("CMPXFolderScanner::RunL -- Run again"); |
|
325 iStatus = KRequestPending; |
|
326 SetActive(); |
|
327 TRequestStatus* status = &iStatus; |
|
328 User::RequestComplete( status, KErrNone ); |
|
329 } |
|
330 } |
|
331 |
|
332 // --------------------------------------------------------------------------- |
|
333 // From CActive |
|
334 // --------------------------------------------------------------------------- |
|
335 // |
|
336 void CMPXFolderScanner::DoCancel() |
|
337 { |
|
338 if( iScanning ) |
|
339 { |
|
340 // Callback to observer with the partial list? |
|
341 TRAP_IGNORE( DoScanCompleteL( KErrCancel ) ); |
|
342 } |
|
343 } |
|
344 |
|
345 // ---------------------------------------------------------------------------- |
|
346 // Handles a leave occurring in the request completion event handler RunL() |
|
347 // ---------------------------------------------------------------------------- |
|
348 // |
|
349 TInt CMPXFolderScanner::RunError(TInt aError) |
|
350 { |
|
351 MPX_DEBUG2("CMPXFolderScanner::RunError(%d)", aError ); |
|
352 |
|
353 TRAP_IGNORE( DoScanCompleteL( aError ) ); |
|
354 |
|
355 return KErrNone; |
|
356 } |