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