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authormickeyl <mickeyl>2005-05-06 20:18:58 (UTC)
committer mickeyl <mickeyl>2005-05-06 20:18:58 (UTC)
commite8bb0ef7701e6bb565dc178424687e82b12bd8ec (patch) (side-by-side diff)
treedb22a14ae11f6ec2b942b51af6def4e03d3a8f50
parent8b1a64ffe497f5395544c6702225003aca293f80 (diff)
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first sketch at ODirNotification class
Diffstat (more/less context) (ignore whitespace changes)
-rw-r--r--examples/opiecore/onotifydemo/onotifydemo.cpp50
-rw-r--r--examples/opiecore/onotifydemo/onotifydemo.h3
-rw-r--r--libopie2/opiecore/ofilenotify.cpp31
-rw-r--r--libopie2/opiecore/ofilenotify.h10
4 files changed, 77 insertions, 17 deletions
diff --git a/examples/opiecore/onotifydemo/onotifydemo.cpp b/examples/opiecore/onotifydemo/onotifydemo.cpp
index 0e84d80..2beda2a 100644
--- a/examples/opiecore/onotifydemo/onotifydemo.cpp
+++ b/examples/opiecore/onotifydemo/onotifydemo.cpp
@@ -1,140 +1,178 @@
#include "onotifydemo.h"
/* OPIE */
#include <opie2/odebug.h>
#include <opie2/oapplication.h>
#include <opie2/ofiledialog.h>
#include <opie2/olistview.h>
#include <opie2/ofilenotify.h>
using namespace Opie::Core;
using namespace Opie::Ui;
/* QT */
#include <qcheckbox.h>
+#include <qfileinfo.h>
#include <qvbox.h>
#include <qhbox.h>
#include <qhbuttongroup.h>
#include <qvbuttongroup.h>
#include <qmessagebox.h>
#include <qpushbutton.h>
DemoApp::DemoApp( int argc, char** argv ) : OApplication( argc, argv, "libopie2 notify demo" )
{
QVBox* vbox = new QVBox();
setMainWidget( vbox );
l = new OListView( vbox );
l->addColumn( "Notification Path" );
l->addColumn( "Trigger Type" );
l->addColumn( "Trigger Mask" );
l->setColumnAlignment( 1, AlignCenter );
l->setColumnAlignment( 2, AlignCenter );
QHBox* hbox = new QHBox( vbox );
g2 = new QVButtonGroup( "Specify Trigger Type", hbox );
QCheckBox* c1 = new QCheckBox( "Access", g2 );
QCheckBox* c2 = new QCheckBox( "Modify", g2 );
QCheckBox* c3 = new QCheckBox( "Attrib", g2 );
QCheckBox* c4 = new QCheckBox( "CloseWrite", g2 );
QCheckBox* c5 = new QCheckBox( "CloseNoWrite", g2 );
QCheckBox* c6 = new QCheckBox( "MovedFrom", g2 );
QCheckBox* c7 = new QCheckBox( "MovedTo", g2 );
QCheckBox* c8 = new QCheckBox( "DeleteSubdir", g2 );
QCheckBox* c9 = new QCheckBox( "DeleteFile", g2 );
QCheckBox* c10 = new QCheckBox( "CreateSubdir", g2 );
QCheckBox* c11 = new QCheckBox( "CreateFile", g2 );
QCheckBox* c12 = new QCheckBox( "Unmount", g2 );
g2->insert( c1, Access );
g2->insert( c2, Modify );
g2->insert( c3, Attrib );
g2->insert( c4, CloseWrite );
g2->insert( c5, CloseNoWrite );
g2->insert( c6, MovedFrom );
g2->insert( c7, MovedTo );
g2->insert( c8, DeleteSubdir );
g2->insert( c9, DeleteFile );
g2->insert( c10, CreateSubdir );
g2->insert( c11, CreateFile );
g2->insert( c12, Unmount );
connect( g2, SIGNAL( pressed(int) ), this, SLOT( modifierClicked(int) ) );
g1 = new QVButtonGroup( "Add/Remove", hbox );
QPushButton* plus1 = new QPushButton( "Add\n&Single", g1 );
QPushButton* plus2 = new QPushButton( "Add\n&Multi", g1 );
QPushButton* minus = new QPushButton( "&Remove\nIt!", g1 );
g1->insert( plus1, 0 );
g1->insert( plus2, 1 );
g1->insert( minus, 2 );
connect( plus1, SIGNAL( clicked() ), this, SLOT( addSingle() ) );
connect( plus2, SIGNAL( clicked() ), this, SLOT( addMulti() ) );
connect( minus, SIGNAL( clicked() ), this, SLOT( delTrigger() ) );
g1->show();
g2->show();
l->show();
hbox->show();
vbox->show();
showMainWidget( vbox );
}
void DemoApp::addTrigger( bool multi )
{
if ( !m )
{
QMessageBox::warning( 0, "Add Trigger", "<p>Can't add trigger without at least one selected trigger type</p>", "&Sorry", 0 );
return;
}
QString filename = OFileDialog::getOpenFileName( OFileSelector::ExtendedAll );
if ( !filename.isEmpty() )
{
+ bool success = true;
odebug << "Filename = " << filename << oendl;
int fntype = m;
QString modifier = QString().sprintf( " = 0x%08x", fntype );
- new OListViewItem( l, filename, multi ? "MULTI" : "SINGLE", modifier );
- if ( !multi )
- OFileNotification::singleShot( filename, this, SLOT( trigger() ), (OFileNotificationType) fntype );
+
+ if ( QFileInfo( filename ).isFile() )
+ {
+ if ( !multi )
+ {
+ success = OFileNotification::singleShot( filename, this, SLOT( unnamedTrigger() ), (OFileNotificationType) fntype );
+ }
+ else
+ {
+ OFileNotification* fn = new OFileNotification();
+ success = fn->watch( filename, false, (OFileNotificationType) fntype );
+ connect( fn, SIGNAL( triggered( const QString& ) ), this, SLOT( namedTrigger( const QString& ) ) );
+ }
+ }
+ else if ( QFileInfo( filename ).isDir() )
+ {
+ ODirNotification* dn = new ODirNotification();
+ success = dn->watch( filename, !multi, (OFileNotificationType) fntype );
+ connect( dn, SIGNAL( triggered( const QString& ) ), this, SLOT( namedTrigger( const QString& ) ) );
+ }
+ else
+ {
+ odebug << "Huh!? Neither file nor directory..." << oendl;
+ return;
+ }
+
+/* if ( !success )
+ {
+ QMessageBox::warning( 0, "Add Trigger", "<p>Couldn't add trigger :(</p>", "&Sorry", 0 );
+ return;
+ }
else
- odebug << "not yet implemented..." << oendl;
+*/ {
+ new OListViewItem( l, filename, multi ? "MULTI" : "SINGLE", modifier );
+ }
+ return;
}
else
{
odebug << "cancelled." << oendl;
}
}
void DemoApp::modifierClicked( int modifier ) { m = static_cast<OFileNotificationType>( (int)m ^ int(modifier) ); };
void DemoApp::addSingle() { addTrigger(); };
void DemoApp::addMulti() { addTrigger( true ); };
void DemoApp::delTrigger()
{
QListViewItem* item = l->selectedItem();
if ( !item )
{
QMessageBox::warning( 0, "Del Trigger", "<p>No trigger selected!</p>", "&Sorry", 0 );
return;
}
else
{
QString filename( item->text( 0 ) );
odebug << "Filename = " << filename << oendl;
}
}
- void DemoApp::trigger()
+ void DemoApp::unnamedTrigger()
+ {
+ owarn << "DemoApp::singleShotStrigger() : F I R E !!!!!" << oendl;
+ }
+
+ void DemoApp::namedTrigger( const QString& path )
{
- owarn << "FIRE!" << oendl;
+ owarn << "DemoApp::named trigger = " << path << " : F I R E !!!!!" << oendl;
}
int main( int argc, char** argv )
{
DemoApp* app = new DemoApp( argc, argv );
app->exec();
return 0;
}
diff --git a/examples/opiecore/onotifydemo/onotifydemo.h b/examples/opiecore/onotifydemo/onotifydemo.h
index c4e3456..f6ac5ea 100644
--- a/examples/opiecore/onotifydemo/onotifydemo.h
+++ b/examples/opiecore/onotifydemo/onotifydemo.h
@@ -1,29 +1,30 @@
/* OPIE */
#include <opie2/olistview.h>
#include <opie2/odebug.h>
#include <opie2/oapplication.h>
#include <opie2/ofilenotify.h>
class QButtonGroup;
class DemoApp : public Opie::Core::OApplication
{
Q_OBJECT
public:
DemoApp( int argc, char** argv );
public:
void addTrigger( bool multi = false );
public slots:
void modifierClicked( int modifier );
void addSingle();
void addMulti();
void delTrigger();
- void trigger();
+ void unnamedTrigger();
+ void namedTrigger( const QString& name );
private:
Opie::Ui::OListView* l;
QButtonGroup* g1;
QButtonGroup* g2;
Opie::Core::OFileNotificationType m;
};
diff --git a/libopie2/opiecore/ofilenotify.cpp b/libopie2/opiecore/ofilenotify.cpp
index efd041a..11d4f87 100644
--- a/libopie2/opiecore/ofilenotify.cpp
+++ b/libopie2/opiecore/ofilenotify.cpp
@@ -1,263 +1,278 @@
/*
                This file is part of the Opie Project
=. Copyright (C) 2004-2005 Michael 'Mickey' Lauer <mickey@Vanille.de>
.=l. Copyright (C) The Opie Team <opie-devel@handhelds.org>
         .>+-=
_;:,     .>    :=|. This program is free software; you can
.> <`_,   >  .   <= redistribute it and/or modify it under
:`=1 )Y*s>-.--   : the terms of the GNU Library General Public
.="- .-=="i,     .._ License as published by the Free Software
- .   .-<_>     .<> Foundation; version 2 of the License.
   ._= =}       :
  .%`+i>       _;_.
  .i_,=:_.      -<s. This program is distributed in the hope that
   +  .  -:.       = it will be useful, but WITHOUT ANY WARRANTY;
  : ..    .:,     . . . without even the implied warranty of
  =_        +     =;=|` MERCHANTABILITY or FITNESS FOR A
_.=:.       :    :=>`: PARTICULAR PURPOSE. See the GNU
..}^=.=       =       ; Library General Public License for more
++=   -.     .`     .: details.
:     =  ...= . :.=-
-.   .:....=;==+<; You should have received a copy of the GNU
-_. . .   )=.  = Library General Public License along with
  --        :-=` this library; see the file COPYING.LIB.
If not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include "ofilenotify.h"
using namespace Opie::Core;
/* OPIE */
/* QT */
#include <qobject.h>
#include <qsocketnotifier.h>
#include <qsignal.h>
#include <qintdict.h>
#include <qdir.h>
/* STD */
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <assert.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
static QIntDict<OFileNotification> notification_list;
QSocketNotifier* OFileNotification::_sn;
int OFileNotification::_fd = -1;
#define INOTIFY_DEVICE "/dev/inotify"
namespace Opie {
namespace Core {
OFileNotification::OFileNotification( QObject* parent, const char* name )
:QObject( parent, name ), _active( false ), _multi( true )
{
qDebug( "OFileNotification::OFileNotification()" );
}
OFileNotification::~OFileNotification()
{
stop();
qDebug( "OFileNotification::~OFileNotification()" );
}
bool OFileNotification::isActive() const
{
return _active;
}
int OFileNotification::watch( const QString& path, bool sshot, OFileNotificationType type )
{
// check if path exists and is a regular file
struct stat s;
if ( ::stat( (const char*) path, &s ) == -1 )
{
qWarning( "OFileNotification::watch(): Can't watch '%s': %s.", (const char*) path, strerror( errno ) );
return -1;
}
if ( !S_ISREG( s.st_mode ) )
{
qWarning( "OFileNotification::watch(): Can't watch '%s': %s.", (const char*) path, "not a regular file" );
return -1;
}
- if ( notification_list.isEmpty() )
- {
- OFileNotification::registerEventHandler();
- }
-
return startWatching( path, sshot, type );
}
int OFileNotification::startWatching( const QString& path, bool sshot, OFileNotificationType type )
{
+ if ( notification_list.isEmpty() )
+ {
+ OFileNotification::registerEventHandler();
+ }
+
struct inotify_watch_request iwr;
::memset( &iwr, 0, sizeof iwr );
iwr.name = const_cast<char*>( (const char*) path );
iwr.mask = type;
_wd = ::ioctl( OFileNotification::_fd, INOTIFY_WATCH, &iwr );
if ( _wd < 0 )
{
qWarning( "OFileNotification::watch(): inotify can't watch '%s': %s.", (const char*) path, strerror( errno ) );
return -1;
}
notification_list.insert( _wd, this );
_path = path;
_multi = !sshot;
_type = type;
_active = true;
qDebug( "OFileNotification::watch(): watching '%s' [wd=%d].", (const char*) path, _wd );
return _wd;
}
void OFileNotification::stop()
{
notification_list.remove( _wd );
_path = QString::null;
_wd = 0;
_active = false;
if ( notification_list.isEmpty() )
{
OFileNotification::unregisterEventHandler();
}
}
OFileNotificationType OFileNotification::type() const
{
return _type;
}
QString OFileNotification::path() const
{
return _path;
}
bool OFileNotification::activate()
{
emit triggered( _path );
_signal.activate();
if ( !_multi ) stop();
return true;
}
bool OFileNotification::singleShot( const QString& path, QObject* receiver, const char* member, OFileNotificationType type )
{
OFileNotification* ofn = new OFileNotification();
ofn->_signal.connect( receiver, member );
return ofn->watch( path, true, type ) != -1;
}
void OFileNotification::inotifyEventHandler()
{
qWarning( "OFileNotification::__eventHandler(): reached." );
char buffer[16384];
size_t buffer_i;
struct inotify_event *pevent, *event;
ssize_t r;
size_t event_size;
int count = 0;
r = ::read(_fd, buffer, 16384);
if ( r <= 0 )
return;
buffer_i = 0;
while ( buffer_i < r )
{
/* Parse events and queue them ! */
pevent = (struct inotify_event *)&buffer[buffer_i];
event_size = sizeof(struct inotify_event) + pevent->len;
qDebug( "pevent->len = %d\n", pevent->len);
OFileNotification* fn = notification_list[ pevent->wd ];
if ( fn )
fn->activate();
else
assert( false );
//event = malloc(event_size);
//memmove(event, pevent, event_size);
//queue_enqueue(event, q);
buffer_i += event_size;
count++;
}
qDebug( "received %d events...", count );
return;
}
bool OFileNotification::registerEventHandler()
{
OFileNotification::_fd = ::open( INOTIFY_DEVICE, O_RDONLY );
if ( OFileNotification::_fd < 0 )
{
qWarning( "OFileNotification::registerEventHandler(): couldn't register event handler: %s", strerror( errno ) );
return false;
}
OFileNotification::_sn = new QSocketNotifier( _fd, QSocketNotifier::Read, this, "inotify event" );
connect( OFileNotification::_sn, SIGNAL( activated(int) ), this, SLOT( inotifyEventHandler() ) );
qDebug( "OFileNotification::registerEventHandler(): done" );
return true;
}
void OFileNotification::unregisterEventHandler()
{
if ( _sn ) delete _sn;
if ( OFileNotification::_fd )
::close( OFileNotification::_fd );
qDebug( "OFileNotification::unregisterEventHandler(): done" );
}
//=================================================================================================
// ODirNotification
//=================================================================================================
ODirNotification::ODirNotification( QObject* parent, const char* name )
:QObject( parent, name )
{
qDebug( "ODirNotification::ODirNotification()" );
}
ODirNotification::~ODirNotification()
{
qDebug( "ODirNotification::~ODirNotification()" );
}
int ODirNotification::watch( const QString& path, bool sshot, OFileNotificationType type, int recurse )
{
qDebug( "ODirNotification::watch( %s, %d, 0x%08x, %d )", (const char*) path, sshot, type, recurse );
- return 0;
-}
+ if ( recurse == 0 )
+ {
+ OFileNotification* fn = new OFileNotification( this, "ODirNotification delegate" );
+ int result = fn->startWatching( path, sshot, type );
+ if ( result != -1 )
+ {
+ connect( fn, SIGNAL( triggered( const QString& ) ), this, SIGNAL( triggered( const QString& ) ) );
+ return result;
+ }
+ }
+ else
+ {
+ qDebug( "ODirNotification::watch(), recursion not yet implemented... :)" );
+ return -1;
+ }
}
-} \ No newline at end of file
+} // namespace Ui
+
+} // namespace Opie
diff --git a/libopie2/opiecore/ofilenotify.h b/libopie2/opiecore/ofilenotify.h
index 41ba84d..3eb917e 100644
--- a/libopie2/opiecore/ofilenotify.h
+++ b/libopie2/opiecore/ofilenotify.h
@@ -36,197 +36,203 @@ _;:,     .>    :=|. This program is free software; you can
/* QT */
#include <qsocketnotifier.h>
#include <qsignal.h>
#include <qstring.h>
namespace Opie {
namespace Core {
/*======================================================================================
* OFileNotificationType
*======================================================================================*/
/**
* @brief An enumerate for the different types of file notifications
*
* This enumerate provides a means to specify the type of events that you are interest in.
* Valid values are:
* <ul>
* <li>Access: The file was accessed (read)
* <li>Modify The file was modified (write,truncate)
* <li>Attrib = The file had its attributes changed (chmod,chown,chgrp)
* <li>CloseWrite = Writable file was closed
* <li>CloseNoWrite = Unwritable file was closed
* <li>Open = File was opened
* <li>MovedFrom = File was moved from X
* <li>MovedTo = File was moved to Y
* <li>DeleteSubdir = Subdir was deleted
* <li>DeleteFile = Subfile was deleted
* <li>CreateSubdir = Subdir was created
* <li>CreateFile = Subfile was created
* <li>DeleteSelf = Self was deleted
* <li>Unmount = The backing filesystem was unmounted
* </ul>
*
**/
enum OFileNotificationType
{
Access = IN_ACCESS,
Modify = IN_MODIFY,
Attrib = IN_ATTRIB,
CloseWrite = IN_CLOSE_WRITE,
CloseNoWrite = IN_CLOSE_NOWRITE,
Open = IN_OPEN,
MovedFrom = IN_MOVED_FROM,
MovedTo = IN_MOVED_TO,
DeleteSubdir = IN_DELETE_SUBDIR,
DeleteFile = IN_DELETE_FILE,
CreateSubdir = IN_CREATE_SUBDIR,
CreateFile = IN_CREATE_FILE,
DeleteSelf = IN_DELETE_SELF,
Unmount = IN_UNMOUNT,
_QueueOverflow = IN_Q_OVERFLOW, /* Internal, don't use this in client code */
_Ignored = IN_IGNORED, /* Internal, don't use this in client code */
};
/*======================================================================================
* OFileNotification
*======================================================================================*/
/**
* @brief Represents a file notification
*
* This class allows to watch for events happening to files.
* It uses the inotify linux (2.6.x) kernel interface.
*
* @see http://www.kernel.org/pub/linux/kernel/people/rml/inotify/
*
* @author Michael 'Mickey' Lauer <mickey@vanille.de>
*
**/
class OFileNotification : public QObject
{
Q_OBJECT
public:
OFileNotification( QObject* parent = 0, const char* name = 0 );
~OFileNotification();
/**
* This static function calls a slot when an event with @a type happens to file @a path.
*
* It is very convenient to use this function because you do not need to
* bother with a timerEvent or to create a local QTimer object.
*
* Example:
* <pre>
*
* #include <opie2/oapplication.h>
* #include <opie2/ofilenotify.h>
* using namespace Opie::Core;
*
* int main( int argc, char **argv )
* {
* OApplication a( argc, argv, "File Notification Example" );
- * OFileNotification::singleShot( "/tmp/quit", &a, SLOT(quit()), Create );
+ * OFileNotification::singleShot( "/tmp/quit", &a, SLOT(quit()), Access );
* ... // create and show your widgets
* return a.exec();
* }
* </pre>
*
- * This sample program automatically terminates when the file "/tmp/quit" has been created.
+ * This sample program automatically terminates when the file "/tmp/quit" has been accessed.
*
*
* The @a receiver is the receiving object and the @a member is the slot.
**/
static bool singleShot( const QString& path, QObject* receiver, const char* member, OFileNotificationType type = Modify );
/**
* Starts to watch for @a type changes to @a path. Set @a sshot to True if you want to be notified only once.
* Note that in that case it may be more convenient to use @ref OFileNotification::singleShot() then.
**/
int watch( const QString& path, bool sshot = false, OFileNotificationType type = Modify );
/**
* Stop watching for file events.
**/
void stop();
/**
* @returns the notification type as set by @ref start().
**/
OFileNotificationType type() const;
/**
* @returns the path to the file being watched by this instance.
**/
QString path() const;
/**
* @returns if a file is currently being watched.
**/
bool isActive() const;
/**
* @internal
*/
int startWatching( const QString& path, bool sshot = false, OFileNotificationType type = Modify );
signals:
/**
* This signal is emitted if an event happens of the specified type happens to the file being watched.
**/
void triggered( const QString& name );
protected:
bool activate();
private slots:
void inotifyEventHandler();
private:
bool registerEventHandler();
void unregisterEventHandler();
QString _path;
OFileNotificationType _type;
QSignal _signal;
bool _active;
bool _multi;
static QSocketNotifier* _sn;
int _wd; // inotify watch descriptor
static int _fd; // inotify device descriptor
};
/*======================================================================================
* ODirNotification
*======================================================================================*/
/**
* @brief Represents a directory notification
*
* This class allows to watch for events happening to directories
* It uses the OFileNotification class
*
* @see http://www.kernel.org/pub/linux/kernel/people/rml/inotify/
*
* @author Michael 'Mickey' Lauer <mickey@vanille.de>
*
**/
class ODirNotification : public QObject
{
Q_OBJECT
public:
ODirNotification( QObject* parent = 0, const char* name = 0 );
~ODirNotification();
/**
* Starts to watch for @a type changes to @a path. Recurse @a recurse levels down the filesystem tree,
* use 0 for no recursion and -1 for unlimited recursion.
* Set @a sshot to True if you want to be notified only once.
**/
int watch( const QString& path, bool sshot = false, OFileNotificationType type = Modify, int recurse = 0 );
+
+ signals:
+ /**
+ * This signal is emitted if an event happens of the specified type happens to the directory being watched.
+ **/
+ void triggered( const QString& name );
};
}
}
#endif