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Viewing changes to src/tools/dirwatch/dirwatch_win.cpp

  • Committer: Bazaar Package Importer
  • Author(s): Jan Niehusmann
  • Date: 2006-01-20 00:20:36 UTC
  • mfrom: (1.2.2 upstream)
  • Revision ID: james.westby@ubuntu.com-20060120002036-7nw6yo6totip0ee5
Tags: 0.10-2
http://bugs.debian.org/327748
http://bugs.debian.org/204416
* Added upstream changelog (Closes: Bug#327748)
* Mention --no-gpg and --no-gpg-agent in manpage (Closes: Bug#204416)

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src/tools/dirwatch/dirwatch_win.cpp
 
1
/*
 
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 * dirwatch_unix.cpp - detect changes of directory content
 
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 * Copyright (C) 2003  Justin Karneges
 
4
 *
 
5
 * This library is free software; you can redistribute it and/or
 
6
 * modify it under the terms of the GNU Lesser General Public
 
7
 * License as published by the Free Software Foundation; either
 
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 * version 2.1 of the License, or (at your option) any later version.
 
9
 *
 
10
 * This library is distributed in the hope that it will be useful,
 
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 
12
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 
13
 * Lesser General Public License for more details.
 
14
 *
 
15
 * You should have received a copy of the GNU Lesser General Public
 
16
 * License along with this library; if not, write to the Free Software
 
17
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
18
 *
 
19
 */
 
20
 
 
21
#include"dirwatch.h"
 
22
 
 
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#include<qthread.h>
 
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#include<qptrlist.h>
 
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#include<qfile.h>
 
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#include<qdir.h>
 
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#include<qtimer.h>
 
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#include<windows.h>
 
29
 
 
30
class DWEvent : public QEvent
 
31
{
 
32
public:
 
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        DWEvent(int _state)
 
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        :QEvent(QEvent::User)
 
35
        {
 
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                state = _state;
 
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        }
 
38
 
 
39
        int state;
 
40
};
 
41
 
 
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class DWThread : public QThread
 
43
{
 
44
public:
 
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        DWThread(QObject *_par, HANDLE _h) : QThread()
 
46
        {
 
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                par = _par;
 
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                h = _h;
 
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        }
 
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        void run()
 
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        {
 
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                while(WaitForSingleObject(h, INFINITE) == WAIT_OBJECT_0) {
 
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                        // send a changed event
 
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                        QThread::postEvent(par, new DWEvent(1));
 
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                        if(!FindNextChangeNotification(h)) {
 
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                                // send an error event
 
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                                QThread::postEvent(par, new DWEvent(0));
 
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                                return;
 
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                        }
 
61
                }
 
62
        }
 
63
 
 
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        QObject *par;
 
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        HANDLE h;
 
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};
 
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class DWEntry : public QObject
 
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{
 
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        Q_OBJECT
 
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public:
 
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        static DWEntry * create(const QString &s)
 
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        {
 
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                HANDLE h = FindFirstChangeNotificationA(QFile::encodeName(QDir::convertSeparators(s)), TRUE,
 
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                        FILE_NOTIFY_CHANGE_FILE_NAME |
 
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                        FILE_NOTIFY_CHANGE_DIR_NAME |
 
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                        FILE_NOTIFY_CHANGE_ATTRIBUTES |
 
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                        FILE_NOTIFY_CHANGE_SIZE |
 
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                        FILE_NOTIFY_CHANGE_LAST_WRITE |
 
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                        FILE_NOTIFY_CHANGE_SECURITY);
 
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                if(h == INVALID_HANDLE_VALUE)
 
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                        return 0;
 
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                DWEntry *e = new DWEntry;
 
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                e->dir = s;
 
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                e->h = h;
 
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                e->thread = new DWThread(e, h);
 
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                e->thread->start();
 
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                return e;
 
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        }
 
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        ~DWEntry()
 
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        {
 
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                if(thread) {
 
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                        FindCloseChangeNotification(h);
 
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                        thread->wait();
 
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                        delete thread;
 
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                }
 
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        }
 
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signals:
 
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        void changed();
 
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protected:
 
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        bool event(QEvent *e)
 
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        {
 
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                if(e->type() == QEvent::User) {
 
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                        DWEvent *de = (DWEvent *)e;
 
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                        // error?
 
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                        if(de->state == 0) {
 
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                                thread->wait();
 
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                                delete thread;
 
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                                FindCloseChangeNotification(h);
 
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                                thread = 0;
 
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                        }
 
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                        else {
 
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                                dirty = true;
 
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                                changed();
 
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                        }
 
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                        return true;
 
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                }
 
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                return false;
 
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        }
 
126
 
 
127
public:
 
128
        QString dir;
 
129
        QValueList<int> idList;
 
130
        bool dirty;
 
131
 
 
132
private:
 
133
        DWEntry()
 
134
        {
 
135
                dirty = false;
 
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        }
 
137
 
 
138
        HANDLE h;
 
139
        DWThread *thread;
 
140
};
 
141
 
 
142
class DirWatchPlatform::Private : public QObject
 
143
{
 
144
        Q_OBJECT
 
145
public:
 
146
        Private(DirWatchPlatform *_par)
 
147
        {
 
148
                par = _par;
 
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                list.setAutoDelete(true);
 
150
                connect(&t, SIGNAL(timeout()), this, SLOT(slotNotify()));
 
151
        }
 
152
 
 
153
        ~Private()
 
154
        {
 
155
                list.clear();
 
156
        }
 
157
 
 
158
        QTimer t;
 
159
        DirWatchPlatform *par;
 
160
        QPtrList<DWEntry> list;
 
161
 
 
162
        int addItem(const QString &s)
 
163
        {
 
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                DWEntry *e = findEntryByDir(s);
 
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                if(!e) {
 
166
                        e = DWEntry::create(s);
 
167
                        if(!e)
 
168
                                return -1;
 
169
                        connect(e, SIGNAL(changed()), SLOT(slotChanged()));
 
170
                        list.append(e);
 
171
                }
 
172
                int id = getUniqueId();
 
173
                e->idList.append(id);
 
174
                return id;
 
175
        }
 
176
 
 
177
        void removeItem(int id)
 
178
        {
 
179
                DWEntry *e = findEntryById(id);
 
180
                if(!e)
 
181
                        return;
 
182
                e->idList.remove(id);
 
183
                if(e->idList.isEmpty())
 
184
                        list.removeRef(e);
 
185
        }
 
186
 
 
187
        int getUniqueId()
 
188
        {
 
189
                for(int n = 0;; ++n) {
 
190
                        QPtrListIterator<DWEntry> it(list);
 
191
                        bool found = false;
 
192
                        for(DWEntry *e; (e = it.current()); ++it) {
 
193
                                for(QValueList<int>::ConstIterator idi = e->idList.begin(); idi != e->idList.end(); ++idi) {
 
194
                                        if(*idi == n) {
 
195
                                                found = true;
 
196
                                                break;
 
197
                                        }
 
198
                                }
 
199
                                if(found)
 
200
                                        break;
 
201
                        }
 
202
                        if(!found)
 
203
                                return n;
 
204
                }
 
205
        }
 
206
 
 
207
        DWEntry * findEntryByDir(const QString &s)
 
208
        {
 
209
                QPtrListIterator<DWEntry> it(list);
 
210
                for(DWEntry *e; (e = it.current()); ++it) {
 
211
                        if(e->dir == s)
 
212
                                return e;
 
213
                }
 
214
                return 0;
 
215
        }
 
216
 
 
217
        DWEntry * findEntryById(int id)
 
218
        {
 
219
                QPtrListIterator<DWEntry> it(list);
 
220
                for(DWEntry *e; (e = it.current()); ++it) {
 
221
                        for(QValueList<int>::ConstIterator idi = e->idList.begin(); idi != e->idList.end(); ++idi) {
 
222
                                if(*idi == id)
 
223
                                        return e;
 
224
                        }
 
225
                }
 
226
                return 0;
 
227
        }
 
228
 
 
229
private slots:
 
230
        void slotChanged()
 
231
        {
 
232
                // use a timer to combine multiple changed events into one
 
233
                if(!t.isActive())
 
234
                        t.start(200, true);
 
235
        }
 
236
 
 
237
        void slotNotify()
 
238
        {
 
239
                // see who is dirty
 
240
                QPtrListIterator<DWEntry> it(list);
 
241
                for(DWEntry *e; (e = it.current()); ++it) {
 
242
                        if(e->dirty) {
 
243
                                e->dirty = false;
 
244
                                for(QValueList<int>::ConstIterator idi = e->idList.begin(); idi != e->idList.end(); ++idi) {
 
245
                                        par->triggerDirChanged(*idi);
 
246
                                }
 
247
                        }
 
248
                }
 
249
        }
 
250
};
 
251
 
 
252
DirWatchPlatform::DirWatchPlatform()
 
253
:QObject(0)
 
254
{
 
255
        d = new Private(this);
 
256
}
 
257
 
 
258
DirWatchPlatform::~DirWatchPlatform()
 
259
{
 
260
        delete d;
 
261
}
 
262
 
 
263
bool DirWatchPlatform::init()
 
264
{
 
265
        return true;
 
266
}
 
267
 
 
268
int DirWatchPlatform::addDir(const QString &s)
 
269
{
 
270
        return d->addItem(s);
 
271
}
 
272
 
 
273
void DirWatchPlatform::removeDir(int id)
 
274
{
 
275
        d->removeItem(id);
 
276
}
 
277
 
 
278
#include"dirwatch_win.moc"