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479 lines
12 KiB
479 lines
12 KiB
/*
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KNode, the KDE newsreader
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Copyright (c) 1999-2005 the KNode authors.
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See file AUTHORS for details
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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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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 Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, US
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*/
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#include <qlayout.h>
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#include <qregexp.h>
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#include <qapplication.h>
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#include <qcursor.h>
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#include <klocale.h>
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#include <kmessagebox.h>
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#include <kglobalsettings.h>
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#include <kdebug.h>
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#include <kio/netaccess.h>
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#include <ktempfile.h>
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#include <kfiledialog.h>
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#include "knwidgets.h"
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#include "knglobals.h"
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#include "utilities.h"
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//================================================================================
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KNFile::KNFile(const QString& fname)
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: QFile(fname), filePos(0), readBytes(0)
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{
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buffer.resize(512);
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dataPtr=buffer.data();
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dataPtr[0]='\0';
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}
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KNFile::~KNFile()
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{
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}
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const QCString& KNFile::readLine()
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{
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filePos=at();
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readBytes=QFile::readLine(dataPtr, buffer.size()-1);
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if(readBytes!=-1) {
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while ((dataPtr[readBytes-1]!='\n')&&(static_cast<uint>(readBytes+2)==buffer.size())) { // don't get tricked by files without newline
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at(filePos);
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if (!increaseBuffer() ||
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(readBytes=QFile::readLine(dataPtr, buffer.size()-1))==-1) {
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readBytes=1;
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break;
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}
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}
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} else
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readBytes=1;
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dataPtr[readBytes-1] = '\0';
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return buffer;
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}
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const QCString& KNFile::readLineWnewLine()
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{
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filePos=at();
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readBytes=QFile::readLine(dataPtr, buffer.size()-1);
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if(readBytes!=-1) {
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while ((dataPtr[readBytes-1]!='\n')&&(static_cast<uint>(readBytes+2)==buffer.size())) { // don't get tricked by files without newline
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at(filePos);
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if (!increaseBuffer() ||
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(readBytes=QFile::readLine(dataPtr, buffer.size()-1))==-1) {
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dataPtr[0] = '\0';
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break;
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}
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}
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}
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else dataPtr[0] = '\0';
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return buffer;
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}
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int KNFile::findString(const char *s)
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{
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QCString searchBuffer;
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searchBuffer.resize(2048);
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char *buffPtr = searchBuffer.data(), *pos;
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int readBytes, currentFilePos;
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while (!atEnd()) {
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currentFilePos = at();
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readBytes = readBlock(buffPtr, 2047);
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if (readBytes == -1)
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return -1;
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else
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buffPtr[readBytes] = 0; // terminate string
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pos = strstr(buffPtr,s);
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if (pos == 0) {
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if (!atEnd())
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at(at()-strlen(s));
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else
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return -1;
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} else {
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return currentFilePos + (pos-buffPtr);
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}
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}
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return -1;
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}
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bool KNFile::increaseBuffer()
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{
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if(buffer.resize(2*buffer.size())) {;
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dataPtr=buffer.data();
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dataPtr[0]='\0';
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kdDebug(5003) << "KNFile::increaseBuffer() : buffer doubled" << endl;
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return true;
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}
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else return false;
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}
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//===============================================================================
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QString KNSaveHelper::lastPath;
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KNSaveHelper::KNSaveHelper(QString saveName, QWidget *parent)
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: p_arent(parent), s_aveName(saveName), file(0), tmpFile(0)
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{
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}
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KNSaveHelper::~KNSaveHelper()
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{
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if (file) { // local filesystem, just close the file
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delete file;
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} else
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if (tmpFile) { // network location, initiate transaction
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tmpFile->close();
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if (KIO::NetAccess::upload(tmpFile->name(),url, 0) == false)
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KNHelper::displayRemoteFileError();
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tmpFile->unlink(); // delete temp file
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delete tmpFile;
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}
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}
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QFile* KNSaveHelper::getFile(const QString &dialogTitle)
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{
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url = KFileDialog::getSaveURL(lastPath + s_aveName, QString::null, p_arent, dialogTitle);
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if (url.isEmpty())
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return 0;
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lastPath = url.upURL().url();
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if (url.isLocalFile()) {
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if (QFileInfo(url.path()).exists() &&
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(KMessageBox::warningContinueCancel(knGlobals.topWidget,
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i18n("<qt>A file named <b>%1</b> already exists.<br>Do you want to replace it?</qt>").arg(url.path()),
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dialogTitle, i18n("&Replace")) != KMessageBox::Continue)) {
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return 0;
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}
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file = new QFile(url.path());
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if(!file->open(IO_WriteOnly)) {
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KNHelper::displayExternalFileError();
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delete file;
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file = 0;
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}
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return file;
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} else {
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tmpFile = new KTempFile();
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if (tmpFile->status()!=0) {
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KNHelper::displayTempFileError();
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delete tmpFile;
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tmpFile = 0;
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return 0;
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}
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return tmpFile->file();
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}
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}
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//===============================================================================
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QString KNLoadHelper::l_astPath;
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KNLoadHelper::KNLoadHelper(QWidget *parent)
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: p_arent(parent), f_ile(0)
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{
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}
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KNLoadHelper::~KNLoadHelper()
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{
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delete f_ile;
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if (!t_empName.isEmpty())
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KIO::NetAccess::removeTempFile(t_empName);
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}
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KNFile* KNLoadHelper::getFile( const QString &dialogTitle )
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{
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if (f_ile)
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return f_ile;
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KURL url = KFileDialog::getOpenURL(l_astPath,QString::null,p_arent,dialogTitle);
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if (url.isEmpty())
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return 0;
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l_astPath = url.url(-1);
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l_astPath.truncate(l_astPath.length()-url.fileName().length());
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return setURL(url);
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}
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KNFile* KNLoadHelper::setURL(KURL url)
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{
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if (f_ile)
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return f_ile;
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u_rl = url;
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if (u_rl.isEmpty())
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return 0;
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QString fileName;
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if (!u_rl.isLocalFile()) {
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if (KIO::NetAccess::download(u_rl, t_empName, 0))
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fileName = t_empName;
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} else
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fileName = u_rl.path();
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if (fileName.isEmpty())
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return 0;
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f_ile = new KNFile(fileName);
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if(!f_ile->open(IO_ReadOnly)) {
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KNHelper::displayExternalFileError();
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delete f_ile;
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f_ile = 0;
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}
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return f_ile;
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}
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//===============================================================================
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// **** keyboard selection dialog *********************************************
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int KNHelper::selectDialog(QWidget *parent, const QString &caption, const QStringList &options, int initialValue)
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{
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KDialogBase *dlg=new KDialogBase(KDialogBase::Plain, caption, KDialogBase::Ok|KDialogBase::Cancel,
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KDialogBase::Ok, parent);
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QFrame *page = dlg->plainPage();
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QHBoxLayout *pageL = new QHBoxLayout(page,8,5);
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KNDialogListBox *list = new KNDialogListBox(true, page);
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pageL->addWidget(list);
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QString s;
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for ( QStringList::ConstIterator it = options.begin(); it != options.end(); ++it ) {
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s = (*it);
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s.replace(QRegExp("&"),""); // remove accelerators
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list->insertItem(s);
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}
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list->setCurrentItem(initialValue);
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list->setFocus();
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restoreWindowSize("selectBox", dlg, QSize(247,174));
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int ret;
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if (dlg->exec())
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ret = list->currentItem();
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else
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ret = -1;
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saveWindowSize("selectBox", dlg->size());
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delete dlg;
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return ret;
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}
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// **** window geometry managing *********************************************
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void KNHelper::saveWindowSize(const QString &name, const QSize &s)
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{
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KConfig *c=knGlobals.config();
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c->setGroup("WINDOW_SIZES");
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c->writeEntry(name, s);
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}
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void KNHelper::restoreWindowSize(const QString &name, QWidget *d, const QSize &defaultSize)
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{
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KConfig *c=knGlobals.config();
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c->setGroup("WINDOW_SIZES");
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QSize s=c->readSizeEntry(name,&defaultSize);
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if(s.isValid()) {
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QRect max = KGlobalSettings::desktopGeometry(QCursor::pos());
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if ( s.width() > max.width() ) s.setWidth( max.width()-5 );
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if ( s.height() > max.height() ) s.setHeight( max.height()-5 );
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d->resize(s);
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}
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}
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// **** scramble password strings **********************************************
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const QString KNHelper::encryptStr(const QString& aStr)
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{
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uint i,val,len = aStr.length();
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QCString result;
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for (i=0; i<len; i++)
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{
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val = aStr[i] - ' ';
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val = (255-' ') - val;
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result += (char)(val + ' ');
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}
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return result;
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}
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const QString KNHelper::decryptStr(const QString& aStr)
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{
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return encryptStr(aStr);
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}
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// **** rot13 *******************************************************************
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QString KNHelper::rot13(const QString &s)
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{
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QString r(s);
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for (int i=0; (uint)i<r.length(); i++) {
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if ( r[i] >= QChar('A') && r[i] <= QChar('M') ||
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r[i] >= QChar('a') && r[i] <= QChar('m') )
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r[i] = (char)((int)QChar(r[i]) + 13);
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else
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if ( r[i] >= QChar('N') && r[i] <= QChar('Z') ||
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r[i] >= QChar('n') && r[i] <= QChar('z') )
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r[i] = (char)((int)QChar(r[i]) - 13);
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}
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return r;
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}
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// **** text rewraping *********************************************************
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int findBreakPos(const QString &text, int start)
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{
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int i;
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for(i=start;i>=0;i--)
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if(text[i].isSpace())
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break;
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if(i>0)
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return i;
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for(i=start;i<(int)text.length();i++) // ok, the line is to long
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if(text[i].isSpace())
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break;
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return i;
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}
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void appendTextWPrefix(QString &result, const QString &text, int wrapAt, const QString &prefix)
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{
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QString txt=text;
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int breakPos;
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while(!txt.isEmpty()) {
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if((int)(prefix.length()+txt.length()) > wrapAt) {
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breakPos=findBreakPos(txt,wrapAt-prefix.length());
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result+=(prefix+txt.left(breakPos)+"\n");
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txt.remove(0,breakPos+1);
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} else {
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result+=(prefix+txt+"\n");
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txt=QString::null;
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}
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}
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}
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QString KNHelper::rewrapStringList(QStringList text, int wrapAt, QChar quoteChar, bool stopAtSig, bool alwaysSpace)
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{
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QString quoted, lastPrefix, thisPrefix, leftover, thisLine;
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int breakPos;
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for(QStringList::Iterator line=text.begin(); line!=text.end(); ++line) {
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if(stopAtSig && (*line)=="-- ")
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break;
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thisLine=(*line);
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if (!alwaysSpace && (thisLine[0]==quoteChar))
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thisLine.prepend(quoteChar); // second quote level without space
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else
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thisLine.prepend(quoteChar+' ');
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thisPrefix=QString::null;
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QChar c;
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for(int idx=0; idx<(int)(thisLine.length()); idx++) {
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c=thisLine.at(idx);
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if( (c==' ') ||
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(c==quoteChar) || (c=='>') ||(c=='|') || (c==':') || (c=='#') || (c=='[') || (c=='{'))
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thisPrefix.append(c);
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else
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break;
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}
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thisLine.remove(0,thisPrefix.length());
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thisLine = thisLine.stripWhiteSpace();
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if(!leftover.isEmpty()) { // don't break paragraphs, tables and quote levels
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if(thisLine.isEmpty() || (thisPrefix!=lastPrefix) || thisLine.contains(" ") || thisLine.contains('\t'))
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appendTextWPrefix(quoted, leftover, wrapAt, lastPrefix);
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else
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thisLine.prepend(leftover+" ");
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leftover=QString::null;
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}
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if((int)(thisPrefix.length()+thisLine.length()) > wrapAt) {
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breakPos=findBreakPos(thisLine,wrapAt-thisPrefix.length());
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if(breakPos < (int)(thisLine.length())) {
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leftover=thisLine.right(thisLine.length()-breakPos-1);
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thisLine.truncate(breakPos);
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}
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}
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quoted+=thisPrefix+thisLine+"\n";
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lastPrefix=thisPrefix;
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}
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if (!leftover.isEmpty())
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appendTextWPrefix(quoted, leftover, wrapAt, lastPrefix);
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return quoted;
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}
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// **** misc. message-boxes **********************************************************
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void KNHelper::displayInternalFileError(QWidget *w)
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{
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KMessageBox::error((w!=0)? w : knGlobals.topWidget, i18n("Unable to load/save configuration.\nWrong permissions on home folder?\nYou should close KNode now to avoid data loss."));
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}
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void KNHelper::displayExternalFileError(QWidget *w)
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{
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KMessageBox::error((w!=0)? w : knGlobals.topWidget, i18n("Unable to load/save file."));
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}
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void KNHelper::displayRemoteFileError(QWidget *w)
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{
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KMessageBox::error((w!=0)? w : knGlobals.topWidget, i18n("Unable to save remote file."));
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}
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void KNHelper::displayTempFileError(QWidget *w)
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{
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KMessageBox::error((w!=0)? w : knGlobals.topWidget, i18n("Unable to create temporary file."));
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}
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