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//=============================================================================
//
// File : KviPackageIOEngine.cpp
// Creation date : Tue 26 Dec 2006 05:33:33 by Szymon Stefanek
//
// This file is part of the KVIrc IRC Client distribution
// Copyright (C) 2006-2010 Szymon Stefanek <pragma at kvirc dot net>
//
// 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.
//
// 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 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.
//
//=============================================================================
#include "KviPackageIOEngine.h"
#include "KviLocale.h"
#include <QApplication>
#include <QByteArray>
#include <QLabel>
#include <QProgressDialog>
//
// A KVIrc Package File is basically a simple zip file with some additional meta-data.
// The package file has the following format
//
// Field Type Bytes Description
//-------------------------------------------------------------------------------
// Package:
// PackageHeader
// PackageInfo
// PackageData
// PackageHeader:
// Magic Bytes 4 'KVPF': Signature for the Kvirc Package File
// Version uint32 4 0x00000001: Version of this package file
// Flags uint32 4 0x00000000: Flags, in version 1 is reserved and must be zero
//
// PackageInfo:
// InfoFieldCount uint32 4 Number of package info fields
// InfoField InfoField Variable A list of informational name-value pairs
// InfoField InfoField Variable A list of informational name-value pairs
// InfoField InfoField Variable A list of informational name-value pairs
// .... .... ....
// PackageData:
// DataField DataField Variable A list of data fields with format defined below
// DataField DataField Variable A list of data fields with format defined below
// DataField DataField Variable A list of data fields with format defined below
// .... .... ....
// InfoField:
// Name UniString Variable The "name" element of the info field
// ValueType uint32 4 The type of the following ValueData field
// ValueData ValueData Variable
// ValueData for ValueType 1 (string field)
// Value UniString Variable The value element of type string of the the info field
// ValueData for ValueType 2 (binary buffer field)
// BufferLen uint32 4 The length of the binary buffer
// BufferData Bytes Variable The data for the binary buffer
// UniString:
// StringLen uint32 4 The length of the string data in BYTES (null terminator NOT included)
// StringData Bytes StringLen An utf8 encoded string (do NOT write the NULL terminator)
// Bytes:
// Byte uint8 1 A byte
// Byte uint8 1 A byte
// .... .... ....
// DataField:
// FieldType uint32 4 The type of the field, see below for defined values
// FieldLen uint32 4 FieldData length in bytes (useful for skipping a field if unsupported)
// FieldData Variable FieldLen The data of the field, see below for defined values
// FieldData for FieldType 1 (file field)
// Flags uint32 4 Bitmask. Bits: 1=FileIsDeflated
// Path UniString Variable A relative path expressed as utf8 string. \ AND / are considered to be separators
// Size uint32 4 Size of the following file data
// FilePayload Bytes Variable
// Everything is stored in LITTLE ENDIAN byte order.
//
// Da Base Engine
//
KviPackageIOEngine::KviPackageIOEngine()
{
m_pProgressDialog = nullptr;
m_pStringInfoFields = new KviPointerHashTable<QString, QString>();
m_pStringInfoFields->setAutoDelete(true);
m_pBinaryInfoFields = new KviPointerHashTable<QString, QByteArray>();
m_pBinaryInfoFields->setAutoDelete(true);
}
KviPackageIOEngine::~KviPackageIOEngine()
{
if(m_pProgressDialog)
delete m_pProgressDialog;
delete m_pStringInfoFields;
delete m_pBinaryInfoFields;
}
bool KviPackageIOEngine::updateProgress(int iProgress, const QString & szLabel)
{
if(!m_pProgressDialog)
return true;
m_pProgressDialog->setValue(iProgress);
m_pProgressDialogLabel->setText(szLabel);
qApp->processEvents();
if(m_pProgressDialog->wasCanceled())
{
setLastError(__tr2qs("Operation cancelled"));
return false;
}
return true;
}
void KviPackageIOEngine::showProgressDialog(const QString & szCaption, int iTotalSteps)
{
m_pProgressDialog = new QProgressDialog(QString(""), __tr2qs("Cancel"), 0, iTotalSteps, nullptr);
m_pProgressDialog->setModal(true);
m_pProgressDialog->setWindowTitle(szCaption);
m_pProgressDialogLabel = new QLabel(m_pProgressDialog);
m_pProgressDialogLabel->setMaximumSize(500, 300);
m_pProgressDialog->setLabel(m_pProgressDialogLabel);
}
void KviPackageIOEngine::hideProgressDialog()
{
if(!m_pProgressDialog)
return;
delete m_pProgressDialog;
m_pProgressDialog = nullptr;
}
bool KviPackageIOEngine::writeError()
{
setLastError(__tr2qs("File write error"));
return false;
}
bool KviPackageIOEngine::readError()
{
setLastError(__tr2qs("File read error"));
return false;
}
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