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-rw-r--r--qmake/tools/qlibrary.cpp13
1 files changed, 7 insertions, 6 deletions
diff --git a/qmake/tools/qlibrary.cpp b/qmake/tools/qlibrary.cpp
index 564db30..be1d54b 100644
--- a/qmake/tools/qlibrary.cpp
+++ b/qmake/tools/qlibrary.cpp
@@ -1,343 +1,344 @@
/****************************************************************************
** $Id$
**
** Implementation of QLibrary class
**
-** Created : 2000-01-01
+** Created : 000101
**
-** Copyright (C) 2000-2002 Trolltech AS. All rights reserved.
+** Copyright (C) 2000-2003 Trolltech AS. All rights reserved.
**
** This file is part of the tools module of the Qt GUI Toolkit.
**
** This file may be distributed under the terms of the Q Public License
** as defined by Trolltech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
** licenses may use this file in accordance with the Qt Commercial License
** Agreement provided with the Software.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
** information about Qt Commercial License Agreements.
** See http://www.trolltech.com/qpl/ for QPL licensing information.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
#include "qplatformdefs.h"
#include <private/qlibrary_p.h>
#ifndef QT_NO_LIBRARY
// uncomment this to get error messages
//#define QT_DEBUG_COMPONENT 1
// uncomment this to get error and success messages
//#define QT_DEBUG_COMPONENT 2
#ifndef QT_DEBUG_COMPONENT
# if defined(QT_DEBUG)
# define QT_DEBUG_COMPONENT 1
# endif
#endif
#if defined(QT_DEBUG_COMPONENT)
#include <qfile.h>
#endif
#if defined(Q_WS_WIN) && !defined(QT_MAKEDLL)
#define QT_NO_LIBRARY_UNLOAD
#endif
QLibraryPrivate::QLibraryPrivate( QLibrary *lib )
: pHnd( 0 ), library( lib )
{
}
/*!
\class QLibrary qlibrary.h
\reentrant
\brief The QLibrary class provides a wrapper for handling shared libraries.
\mainclass
- \group plugins
+ \ingroup plugins
An instance of a QLibrary object can handle a single shared
library and provide access to the functionality in the library in
a platform independent way. If the library is a component server,
QLibrary provides access to the exported component and can
directly query this component for interfaces.
QLibrary ensures that the shared library is loaded and stays in
memory whilst it is in use. QLibrary can also unload the library
on destruction and release unused resources.
A typical use of QLibrary is to resolve an exported symbol in a
shared object, and to call the function that this symbol
represents. This is called "explicit linking" in contrast to
"implicit linking", which is done by the link step in the build
process when linking an executable against a library.
The following code snippet loads a library, resolves the symbol
"mysymbol", and calls the function if everything succeeded. If
something went wrong, e.g. the library file does not exist or the
symbol is not defined, the function pointer will be 0 and won't be
called. When the QLibrary object is destroyed the library will be
unloaded, making all references to memory allocated in the library
invalid.
\code
typedef void (*MyPrototype)();
MyPrototype myFunction;
QLibrary myLib( "mylib" );
myFunction = (MyProtoype) myLib.resolve( "mysymbol" );
if ( myFunction ) {
myFunction();
}
\endcode
*/
/*!
Creates a QLibrary object for the shared library \a filename. The
library will be unloaded in the destructor.
Note that \a filename does not need to include the (platform specific)
file extension, so calling
\code
QLibrary lib( "mylib" );
\endcode
is equivalent to calling
\code
QLibrary lib( "mylib.dll" );
\endcode
on Windows, and
\code
QLibrary lib( "libmylib.so" );
\endcode
on Unix. Specifying the extension is not recommended, since
doing so introduces a platform dependency.
If \a filename does not include a path, the library loader will
look for the file in the platform specific search paths.
\sa load() unload(), setAutoUnload()
*/
QLibrary::QLibrary( const QString& filename )
: libfile( filename ), aunload( TRUE )
{
libfile.replace( '\\', '/' );
d = new QLibraryPrivate( this );
}
/*!
Deletes the QLibrary object.
The library will be unloaded if autoUnload() is TRUE (the
default), otherwise it stays in memory until the application
exits.
\sa unload(), setAutoUnload()
*/
QLibrary::~QLibrary()
{
if ( autoUnload() )
unload();
delete d;
}
/*!
Returns the address of the exported symbol \a symb. The library is
loaded if necessary. The function returns 0 if the symbol could
not be resolved or the library could not be loaded.
\code
typedef int (*avgProc)( int, int );
avgProc avg = (avgProc) library->resolve( "avg" );
if ( avg )
return avg( 5, 8 );
else
return -1;
\endcode
*/
void *QLibrary::resolve( const char* symb )
{
if ( !d->pHnd )
load();
if ( !d->pHnd )
return 0;
void *address = d->resolveSymbol( symb );
return address;
}
/*!
\overload
Loads the library \a filename and returns the address of the
exported symbol \a symb. Note that like the constructor, \a
filename does not need to include the (platform specific) file
extension. The library remains loaded until the process exits.
The function returns 0 if the symbol could not be resolved or the
library could not be loaded.
This function is useful only if you want to resolve a single
symbol, e.g. a function pointer from a specific library once:
\code
typedef void (*FunctionType)();
static FunctionType *ptrFunction = 0;
static bool triedResolve = FALSE;
if ( !ptrFunction && !triedResolve )
ptrFunction = QLibrary::resolve( "mylib", "mysymb" );
if ( ptrFunction )
ptrFunction();
else
...
\endcode
If you want to resolve multiple symbols, use a QLibrary object and
call the non-static version of resolve().
\sa resolve()
*/
void *QLibrary::resolve( const QString &filename, const char *symb )
{
QLibrary lib( filename );
lib.setAutoUnload( FALSE );
return lib.resolve( symb );
}
/*!
Returns TRUE if the library is loaded; otherwise returns FALSE.
\sa unload()
*/
bool QLibrary::isLoaded() const
{
return d->pHnd != 0;
}
/*!
Loads the library. Since resolve() always calls this function
before resolving any symbols it is not necessary to call it
explicitly. In some situations you might want the library loaded
in advance, in which case you would use this function.
*/
bool QLibrary::load()
{
return d->loadLibrary();
}
/*!
Unloads the library and returns TRUE if the library could be
unloaded; otherwise returns FALSE.
This function is called by the destructor if autoUnload() is
enabled.
\sa resolve()
*/
bool QLibrary::unload()
{
if ( !d->pHnd )
return TRUE;
#if !defined(QT_NO_LIBRARY_UNLOAD)
if ( !d->freeLibrary() ) {
# if defined(QT_DEBUG_COMPONENT)
qWarning( "%s could not be unloaded", (const char*) QFile::encodeName(library()) );
# endif
return FALSE;
}
# if defined(QT_DEBUG_COMPONENT) && QT_DEBUG_COMPONENT == 2
qWarning( "%s has been unloaded", (const char*) QFile::encodeName(library()) );
# endif
d->pHnd = 0;
#endif
return TRUE;
}
/*!
Returns TRUE if the library will be automatically unloaded when
this wrapper object is destructed; otherwise returns FALSE. The
default is TRUE.
\sa setAutoUnload()
*/
bool QLibrary::autoUnload() const
{
return (bool)aunload;
}
/*!
If \a enabled is TRUE (the default), the wrapper object is set to
automatically unload the library upon destruction. If \a enabled
is FALSE, the wrapper object is not unloaded unless you explicitly
call unload().
\sa autoUnload()
*/
void QLibrary::setAutoUnload( bool enabled )
{
aunload = enabled;
}
/*!
Returns the filename of the shared library this QLibrary object
handles, including the platform specific file extension.
For example:
\code
QLibrary lib( "mylib" );
QString str = lib.library();
\endcode
will set \e str to "mylib.dll" on Windows, and "libmylib.so" on Linux.
*/
QString QLibrary::library() const
{
if ( libfile.isEmpty() )
return libfile;
QString filename = libfile;
#if defined(Q_WS_WIN)
if ( filename.findRev( '.' ) <= filename.findRev( '/' ) )
filename += ".dll";
#elif defined(Q_OS_MACX)
if ( filename.find( ".dylib" ) == -1 )
filename += ".dylib";
#else
- if ( filename.find( ".so" ) == -1 ) {
+ QString filter = ".so";
+ if ( filename.find(filter) == -1 ) {
const int x = filename.findRev( "/" );
if ( x != -1 ) {
QString path = filename.left( x + 1 );
QString file = filename.right( filename.length() - x - 1 );
- filename = QString( "%1lib%2.so" ).arg( path ).arg( file );
+ filename = QString( "%1lib%2.%3" ).arg( path ).arg( file ).arg( filter );
} else {
- filename = QString( "lib%1.so" ).arg( filename );
+ filename = QString( "lib%1.%2" ).arg( filename ).arg( filter );
}
}
#endif
return filename;
}
#endif //QT_NO_LIBRARY