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tdepim/knode/utilities.cpp

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