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/*******************************************************************************
**
** Filename : util
** Created on : 03 April, 2005
** Copyright : (c) 2005 Till Adam
** Email : <adam@kde.org>
**
*******************************************************************************/
/*******************************************************************************
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** It 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
** General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
**
** In addition, as a special exception, the copyright holders give
** permission to link the code of this program with any edition of
** the Qt library by Trolltech AS, Norway (or with modified versions
** of Qt that use the same license as Qt), and distribute linked
** combinations including the two. You must obey the GNU General
** Public License in all respects for all of the code used other than
** Qt. If you modify this file, you may extend this exception to
** your version of the file, but you are not obligated to do so. If
** you do not wish to do so, delete this exception statement from
** your version.
**
*******************************************************************************/
#ifndef KMAILUTIL_H
#define KMAILUTIL_H
#include <stdlib.h>
#include <qobject.h>
#include <qcstring.h>
#include <kio/netaccess.h>
#include <kmessagebox.h>
#include <klocale.h>
class DwString;
class KURL;
class QWidget;
namespace KMail
{
/**
* The Util namespace contains a collection of helper functions use in
* various places.
*/
namespace Util {
/**
* Convert all sequences of "\r\n" (carriage return followed by a line
* feed) to a single "\n" (line feed). The conversion happens in place.
* Returns the length of the resulting string.
* @param str The string to convert.
* @param strLen The length of the string to convert.
* @return The new length of the converted string.
*/
size_t crlf2lf( char* str, const size_t strLen );
/**
* Convert "\n" line endings to "\r\n".
* @param src The source string to convert.
* @return The result string.
*/
QCString lf2crlf( const QCString & src );
/**
* Convert "\n" line endings to "\r\n".
* @param src The source string to convert. NOT null-terminated.
* @return The result string. NOT null-terminated.
*/
QByteArray lf2crlf( const QByteArray & src );
/**
* Construct a QCString from a DwString
*/
QCString CString( const DwString& str );
/**
* Construct a QByteArray from a DwString
*/
QByteArray ByteArray( const DwString& str );
/**
* Construct a DwString from a QCString
*/
DwString dwString( const QCString& str );
/**
* Construct a DwString from a QByteArray
*/
DwString dwString( const QByteArray& str );
/**
* Fills a QByteArray from a QCString - removing the trailing null.
*/
void setFromQCString( QByteArray& arr, const QCString& cstr );
inline void setFromQCString( QByteArray& arr, const QCString& cstr )
{
if ( cstr.size() )
arr.duplicate( cstr.data(), cstr.size()-1 );
else
arr.resize(0);
}
/**
* Creates a QByteArray from a QCString without detaching (duplicating the data).
* Fast, but be careful, the QCString gets modified by this; this is only good for
* the case where the QCString is going to be thrown away afterwards anyway.
*/
QByteArray byteArrayFromQCStringNoDetach( QCString& cstr );
inline QByteArray byteArrayFromQCStringNoDetach( QCString& cstr )
{
QByteArray arr = cstr;
if ( arr.size() )
arr.resize( arr.size() - 1 );
return arr;
}
/**
* Restore the QCString after byteArrayFromQCStringNoDetach modified it
*/
void restoreQCString( QCString& str );
inline void restoreQCString( QCString& str )
{
if ( str.data() )
str.resize( str.size() + 1 );
}
/**
* Fills a QCString from a QByteArray - adding the trailing null.
*/
void setFromByteArray( QCString& cstr, const QByteArray& arr );
inline void setFromByteArray( QCString& result, const QByteArray& arr )
{
const int len = arr.size();
result.resize( len + 1 /* trailing NUL */ );
memcpy(result.data(), arr.data(), len);
result[len] = 0;
}
/**
* Append a bytearray to a bytearray. No trailing nuls anywhere.
*/
void append( QByteArray& that, const QByteArray& str );
/**
* Append a char* to a bytearray. Trailing nul not copied.
*/
void append( QByteArray& that, const char* str );
/**
* Append a QCString to a bytearray. Trailing nul not copied.
*/
void append( QByteArray& that, const QCString& str );
void insert( QByteArray& that, uint index, const char* s );
/**
* A LaterDeleter is intended to be used with the RAII ( Resource
* Acquisition is Initialization ) paradigm. When an instance of it
* goes out of scope it deletes the associated object It can be
* disabled, in case the deletion needs to be avoided for some
* reason, since going out-of-scope cannot be avoided.
*/
class LaterDeleter
{
public:
LaterDeleter( QObject *o)
:m_object( o ), m_disabled( false )
{
}
virtual ~LaterDeleter()
{
if ( !m_disabled ) {
m_object->deleteLater();
}
}
void setDisabled( bool v )
{
m_disabled = v;
}
protected:
QObject *m_object;
bool m_disabled;
};
// return true if we should proceed, false if we should abort
inline bool checkOverwrite( const KURL& url, QWidget* w )
{
if ( KIO::NetAccess::exists( url, false /*dest*/, w ) ) {
if ( KMessageBox::Cancel ==
KMessageBox::warningContinueCancel(
w,
i18n( "A file named \"%1\" already exists. "
"Are you sure you want to overwrite it?" ).arg( url.prettyURL() ),
i18n( "Overwrite File?" ),
i18n( "&Overwrite" ) ) )
return false;
}
return true;
}
}
}
#endif
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