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tdewebdev/kommander/widget/kommanderwidget.cpp

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/***************************************************************************
kommanderwidget.cpp - Text widget core functionality
-------------------
copyright : (C) 2002-2003 Marc Britton <consume@optusnet.com.au>
(C) 2004 Michal Rudolf <mrudolf@kdewebdwev.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. *
* *
***************************************************************************/
/* KDE INCLUDES */
#include <dcopclient.h>
#include <kapplication.h>
#include <kdebug.h>
#include <klocale.h>
#include <kdialogbase.h>
#include <kmessagebox.h>
#include <kprocess.h>
/* QT INCLUDES */
#include <tqcstring.h>
#include <tqdatastream.h>
#include <tqfileinfo.h>
#include <tqobject.h>
#include <tqobjectlist.h>
#include <tqregexp.h>
#include <tqstring.h>
#include <tqstringlist.h>
#include <tqvaluelist.h>
#include <tqvariant.h>
/* UNIX INCLUDES */
#include <unistd.h>
#include <stdlib.h>
/* OTHER INCLUDES */
#include "myprocess.h"
#include "kommanderwidget.h"
#include "specials.h"
#include "specialinformation.h"
#include "parser.h"
#include "parserdata.h"
#include "kommanderwindow.h"
KommanderWidget::KommanderWidget(TQObject *a_thisObject)
{
m_thisObject = a_thisObject;
}
KommanderWidget::~KommanderWidget()
{
}
void KommanderWidget::setAssociatedText(const TQStringList& a_associations)
{
m_associatedText = a_associations;
while(m_associatedText.count() < (states().count()))
m_associatedText += TQString(); // sync states and associations
}
TQStringList KommanderWidget::associatedText() const
{
return m_associatedText;
}
bool KommanderWidget::hasAssociatedText()
{
int index = states().findIndex(currentState());
if (index == -1 || m_associatedText[index].isEmpty())
return false;
return true;
}
void KommanderWidget::setPopulationText(const TQString& a_txt)
{
m_populationText = a_txt;
}
TQString KommanderWidget::populationText() const
{
return m_populationText;
}
TQStringList KommanderWidget::states() const
{
return m_states;
}
TQStringList KommanderWidget::displayStates() const
{
return m_displayStates;
}
void KommanderWidget::setStates(const TQStringList& a_states)
{
m_states = a_states;
}
void KommanderWidget::setDisplayStates(const TQStringList& a_displayStates)
{
m_displayStates = a_displayStates;
}
TQString KommanderWidget::evalAssociatedText() // expands and returns associated text as a string
{
int index = ( states().findIndex( currentState()) );
if (index == -1)
{
printError(i18n("Invalid state for associated text."));
return TQString();
}
return evalAssociatedText(m_associatedText[index]);
}
TQString KommanderWidget::evalAssociatedText(const TQString& a_text)
{
/* New internal parser is used if global flag is set */
if ((KommanderWidget::useInternalParser && !a_text.startsWith("#!")) || a_text.startsWith("#!kommander"))
{
Parser p(internalParserData());
p.setWidget(this);
p.setString(a_text);
if (!p.setString(a_text) || !p.parse())
printError(i18n("Line %1: %2.\n").tqarg(p.errorLine()+1).tqarg(p.errorMessage()));
return TQString();
}
/* Old macro-only parser is implemented below */
bool parserType = KommanderWidget::useInternalParser;
KommanderWidget::useInternalParser = false; //shebang is used, switch to old parser
TQString evalText;
int pos = 0, baseTextLength = a_text.length();
while (pos < baseTextLength)
{
int ident = a_text.find(ESCCHAR, pos);
if (ident == -1) {
evalText += a_text.mid(pos);
break;
}
evalText += a_text.mid(pos, ident - pos);
pos = ident+1;
/* escaped @ */
if (pos < baseTextLength-1 && a_text[pos] == ESCCHAR)
{
evalText += ESCCHAR;
pos++;
continue;
}
TQString identifier = parseIdentifier(a_text, pos);
/* comment */
if (identifier.isEmpty())
{
if (pos < baseTextLength && a_text[pos] == '#') { // comment
int newpos = a_text.find('\n', pos+1);
if (newpos == -1)
newpos = a_text.length();
if (pos > 1 && a_text[pos-2] == '\n')
newpos++;
pos = newpos;
}
else
evalText += ESCCHAR; // single @
continue;
}
bool ok = true;
TQStringList args;
/* Standard, non-prefixed special */
if (identifier == "if") // if required special handling as it takes expression
{
TQString arg = parseBrackets(a_text, pos, ok);
if (!ok)
return TQString();
args.append(evalAssociatedText(arg));
evalText += evalIfBlock(args, a_text, pos);
}
else if (SpecialInformation::function(Group::Kommander, identifier) != -1)
{
args = parseFunction("Kommander", identifier, a_text, pos, ok);
if (!ok)
return TQString();
else if (identifier == "execBegin")
evalText += evalExecBlock(args, a_text, pos);
else if (identifier == "forEach")
evalText += evalForEachBlock(args, a_text, pos);
else if (identifier == "for")
evalText += evalForBlock(args, a_text, pos);
else if (identifier == "switch")
evalText += evalSwitchBlock(args, a_text, pos);
else if (identifier == "if")
evalText += evalIfBlock(args, a_text, pos);
else
evalText += evalFunction(identifier, args);
}
/* Widget special */
else if (parseWidget(identifier))
evalText += evalWidgetFunction(identifier, a_text, pos);
else if (a_text[pos] == '.')
{
pos++;
TQString function = parseIdentifier(a_text, pos);
args = parseFunction(identifier, function, a_text, pos, ok);
if (!ok)
return TQString();
switch (SpecialInformation::group(identifier))
{
case Group::Array:
evalText += evalArrayFunction(function, args);
break;
case Group::String:
evalText += Parser::function(internalParserData(), "str_" + function, args);
break;
case Group::File:
evalText += Parser::function(internalParserData(), "file_" + function, args);
break;
case Group::Message:
evalText += Parser::function(internalParserData(), "message_" + function, args);
break;
case Group::Input:
evalText += Parser::function(internalParserData(), "input_" + function, args);
break;
default:
return TQString();
}
}
else
{
printError(i18n("Unknown special: \'%1\'.").tqarg(identifier));
return TQString();
}
}
KommanderWidget::useInternalParser = parserType;
return evalText;
}
TQString KommanderWidget::DCOPQuery(const TQStringList& a_query)
{
TQString app = a_query[0];
app.remove("\"");
TQCString appId = app.latin1(), object = a_query[1].latin1();
// parse function arguments
TQString function = a_query[2], pTypes;
function.remove(' ');
int start = function.find('(');
bool ok = false;
if (start != -1)
pTypes = parseBrackets(function, start, ok);
else
{
ok = true;
function += "()";
}
if (!ok)
{
printError(i18n("Unmatched parenthesis in DCOP call \'%1\'.").tqarg(a_query[2]));
return TQString();
}
const TQStringList argTypes = parseArgs(pTypes, ok);
if (!ok || argTypes.count() != a_query.count() - 3)
{
printError(i18n("Incorrect arguments in DCOP call \'%1\'.").tqarg(a_query[2]));
return TQString();
}
TQCString replyType;
TQByteArray byteData, byteReply;
TQDataStream byteDataStream(byteData, IO_WriteOnly);
for (uint i=0 ; i<argTypes.count(); i++) {
if (argTypes[i] == "int")
byteDataStream << a_query[i+3].toInt();
else if (argTypes[i] == "long")
byteDataStream << a_query[i+3].toLong();
else if (argTypes[i] == "float")
byteDataStream << a_query[i+3].toFloat();
else if (argTypes[i] == "double")
byteDataStream << a_query[i+3].toDouble();
else if (argTypes[i] == "bool")
byteDataStream << (bool)(a_query[i+3] != "false" && a_query[i+3] != "false" && a_query[i+3] != "0");
else if (argTypes[i] == TQSTRINGLIST_OBJECT_NAME_STRING)
if (a_query[i+3].find('\n') != -1)
byteDataStream << TQStringList::split("\n", a_query[i+3], true);
else
byteDataStream << TQStringList::split("\\n", a_query[i+3], true);
else
byteDataStream << a_query[i+3];
}
DCOPClient *cl = KApplication::dcopClient();
if (!cl || !cl->call(appId, object, function.latin1(), byteData, replyType, byteReply))
{
printError(i18n("Tried to perform DCOP query, but failed."));
return TQString();
}
TQDataStream byteReplyStream(byteReply, IO_ReadOnly);
if (replyType == TQSTRING_OBJECT_NAME_STRING)
{
TQString text;
byteReplyStream >> text;
return text;
}
else if(replyType == "int")
{
int i;
byteReplyStream >> i;
return TQString::number(i);
}
else if(replyType == "bool")
{
bool b;
byteReplyStream >> b;
return TQString::number(b);
}
else if (replyType == TQSTRINGLIST_OBJECT_NAME_STRING)
{
TQStringList text;
byteReplyStream >> text;
return text.join("\n");
}
else if(replyType != "void")
{
printError(i18n("DCOP return type %1 is not yet implemented.").tqarg(replyType.data()));
}
return TQString();
}
TQString KommanderWidget::localDCOPQuery(const TQString function, const TQStringList& args)
{
TQStringList pArgs;
pArgs.append(kapp->dcopClient()->appId());
pArgs.append("KommanderIf");
pArgs.append(function);
for (uint i=0; i<args.count(); i++)
pArgs.append(args[i]);
return DCOPQuery(pArgs);
}
TQString KommanderWidget::localDCOPQuery(const TQString function, const TQString& arg1,
const TQString& arg2, const TQString& arg3, const TQString& arg4)
{
TQStringList pArgs;
pArgs.append(kapp->dcopClient()->appId());
pArgs.append("KommanderIf");
pArgs.append(function);
pArgs.append(arg1);
pArgs.append(arg2);
if (!arg3.isNull())
pArgs.append(arg3);
if (!arg4.isNull())
pArgs.append(arg4);
return DCOPQuery(pArgs);
}
TQString KommanderWidget::execCommand(const TQString& a_command, const TQString& a_shell) const
{
MyProcess proc(this);
TQString text = proc.run(a_command.local8Bit(), a_shell.latin1());
//FIXME check if exec was successful
return text;
}
TQString KommanderWidget::runDialog(const TQString& a_dialog, const TQString& a_params)
{
TQString pFileName = localDCOPQuery("global(TQString)", "_KDDIR") + TQString("/") + a_dialog;
TQFileInfo pDialogFile(pFileName);
if (!pDialogFile.exists())
{
pFileName = a_dialog;
pDialogFile.setFile(pFileName);
if (!pDialogFile.exists())
return TQString();
}
TQString cmd = TQString("kmdr-executor %1 %2 _PARENTPID=%3 _PARENTDCOPID=kmdr-executor-%4")
.tqarg(pFileName).tqarg(a_params).tqarg(getpid()).tqarg(getpid());
return execCommand(cmd);
}
void KommanderWidget::printError(const TQString& a_error) const
{
if (showErrors)
{
KDialogBase* dialog = new KDialogBase("Error", KDialogBase::Yes | KDialogBase::No | KDialogBase::Cancel,
KDialogBase::Yes, KDialogBase::No, 0, 0, true, false,
i18n("Continue"), i18n("Continue && Ignore Next Errors"), i18n("Stop"));
switch (KMessageBox::createKMessageBox(dialog, TQMessageBox::Warning,
i18n("<qt>Error in widget <b>%1</b>:<p><i>%2</i></qt>").tqarg(TQString(m_thisObject->name()))
.tqarg(a_error), TQStringList(), TQString(), 0, 0))
{
case KDialogBase::No:
showErrors = false;
case KDialogBase::Yes:
break;
case KDialogBase::Cancel:
if (parentDialog()->inherits(TQDIALOG_OBJECT_NAME_STRING))
{
parentDialog()->close();
exit(-1);
}
else if (parentDialog()->inherits(TQMAINWINDOW_OBJECT_NAME_STRING))
kapp->quit();
}
}
else
{
kdError() << i18n("Error in widget %1:\n %2\n").tqarg(m_thisObject->name()).tqarg(a_error);
}
}
TQString KommanderWidget::parseIdentifier(const TQString& s, int& from) const
{
uint start = from;
while (start < s.length() && s[start].isSpace())
start++;
uint end = start;
while (end < s.length() && (s[end].isLetterOrNumber() || s[end] == '_'))
end++;
from = end;
return s.mid(start, end-start);
}
TQString KommanderWidget::parseBrackets(const TQString& s, int& from, bool& ok) const
{
ok = true;
uint start = from;
while (start < s.length() && s[start].isSpace())
start++;
if (start == s.length() || s[start] != '(')
return TQString();
bool quoteSingle = false, quoteDouble = false;
int brackets = 1;
for (uint end = start+1; end < s.length(); end++)
{
if (!quoteDouble && s[end] == '\'' && s[end-1] != '\\')
quoteSingle = !quoteSingle;
else if (!quoteSingle && s[end] == '\"' && s[end-1] != '\\')
quoteDouble = !quoteDouble;
else if (!quoteDouble && !quoteSingle && s[end] == '(')
brackets++;
else if (!quoteDouble && !quoteSingle && s[end] == ')')
{
brackets--;
if (!brackets) {
from = end + 1;
return s.mid(start+1, end-start-1);
}
}
}
ok = false;
return TQString();
}
TQStringList KommanderWidget::parseArgs(const TQString& s, bool &ok)
{
TQStringList argList;
bool quoteDouble = false, quoteSingle = false;
uint i, start = 0, brackets=0;
for (i = 0; i < s.length(); i++)
{
/* Handle brackets */
if (s[i] == '(' && !quoteSingle && !quoteDouble)
brackets++;
else if (s[i] == ')' && !quoteSingle && !quoteDouble)
brackets--;
/* Ignore everything in brackets */
else if (!brackets)
{
if (s[i] == '\'' && s[i-1] != '\\' && !quoteDouble)
quoteSingle = !quoteSingle;
else if (s[i] == '\"' && s[i-1] != '\\' && !quoteSingle)
quoteDouble = !quoteDouble;
else if (s[i] == ',' && !quoteDouble && !quoteSingle)
{
TQString arg = s.mid(start, i - start).stripWhiteSpace();
if (!arg.isEmpty())
argList.append(evalAssociatedText(parseQuotes(arg)));
start = i+1;
}
}
}
if (!quoteDouble && !quoteSingle)
{
TQString arg = s.mid(start, s.length() - start + 1).stripWhiteSpace();
if (!arg.isEmpty())
argList.append(evalAssociatedText(parseQuotes(arg)));
}
ok = !quoteDouble && !quoteSingle;
return argList;
}
TQString KommanderWidget::parseQuotes(const TQString& s) const
{
if (s[0] == s[s.length()-1] && (s[0] == '\'' || s[0] == '\"'))
{
TQMemArray<TQChar> buf(s.length());
int start = 0;
int end = s.length() - 1;
for (int i=1; i<end; i++)
if (s[i] == '\\')
{
if (s[i+1] == 't')
buf[start++] = '\t';
else if (s[i+1] == 'n')
buf[start++] = '\n';
else if (s[i+1] == '\\')
buf[start++] = '\\';
else
{
buf[start++] = s[i];
i--;
}
i++;
}
else
buf[start++] = s[i];
return TQString(buf, start);
//return s.mid(1, s.length()-2);
}
else return s;
}
bool KommanderWidget::isWidget(const TQString& a_name) const
{
return parseWidget(a_name);
}
KommanderWidget* KommanderWidget::widgetByName(const TQString& a_name) const
{
return parseWidget(a_name);
}
KommanderWidget* KommanderWidget::parseWidget(const TQString& widgetName) const
{
if (TQString(parentDialog()->name()) == widgetName)
return dynamic_cast <KommanderWidget*>(parentDialog());
TQCString s = widgetName.lower() == "self" ? m_thisObject->name() : widgetName.latin1();
TQObject* childObj = parentDialog()->child(s);
/* if (!childObj)
{
Parser parser(internalParserData());
TQString variableValue = parser.variable(widgetName).toString();
s = variableValue.lower() == "self" ? m_thisObject->name() : variableValue.latin1();
childObj = parentDialog()->child(s);
}*/
return dynamic_cast <KommanderWidget*>(childObj);
}
TQStringList KommanderWidget::parseFunction(const TQString& group, const TQString& function,
const TQString& s, int& from, bool& ok)
{
ok = true;
bool success = false;
TQString arg = parseBrackets(s, from, ok);
if (!ok)
{
printError(i18n("Unmatched parenthesis after \'%1\'.").tqarg(function));
return TQString();
}
const TQStringList args = parseArgs(arg, ok);
int gname = SpecialInformation::group(group);
int fname = SpecialInformation::function(gname, function);
bool extraArg = gname == Group::DCOP;
if (!ok)
printError(i18n("Unmatched quotes in argument of \'%1\'.").tqarg(function));
else if (gname == -1)
printError(i18n("Unknown function group: \'%1\'.").tqarg(group));
else if (fname == -1 && !extraArg)
printError(i18n("Unknown function: \'%1\' in group '%2'.").tqarg(function).tqarg(group));
else if (fname == -1 && extraArg)
printError(i18n("Unknown widget function: \'%1\'.").tqarg(function));
else if ((int)args.count() + extraArg < SpecialInformation::minArg(gname, fname))
printError(i18n("Not enough arguments for \'%1\' (%2 instead of %3).<p>"
"Correct syntax is: %4")
.tqarg(function).tqarg(args.count() + extraArg).tqarg(SpecialInformation::minArg(gname, fname))
.tqarg(SpecialInformation::prototype(gname, fname, SpecialFunction::ShowArgumentNames)));
else if ((int)args.count() + extraArg > SpecialInformation::maxArg(gname, fname))
printError(i18n("Too many arguments for \'%1\' (%2 instead of %3).<p>"
"Correct syntax is: %4")
.tqarg(function).tqarg(args.count() + extraArg).tqarg(SpecialInformation::maxArg(gname, fname))
.tqarg(SpecialInformation::prototype(gname, fname, SpecialFunction::ShowArgumentNames)));
else
success = true;
ok = success;
return args;
}
int KommanderWidget::parseBlockBoundary(const TQString& s, int from, const TQStringList& args) const
{
int shortest = -1;
for (uint i=0; i<args.count(); i++)
{
int match = s.find(args[i], from);
if (shortest > match || shortest == -1)
shortest = match;
}
return shortest;
}
TQString KommanderWidget::substituteVariable(TQString text, TQString variable, TQString value) const
{
TQString var = TQString("@%1").tqarg(variable);
TQString newtext;
int newpos, pos = 0;
while (true)
{
newpos = text.find(var, pos);
if (newpos != -1)
{
newtext += text.mid(pos, newpos-pos);
newtext += value;
pos = newpos + var.length();
} else
{
newtext += text.mid(pos);
break;
}
}
return newtext;
}
TQWidget* KommanderWidget::parentDialog() const
{
TQObject *superParent = m_thisObject;
while (superParent->parent())
{
superParent = superParent->parent();
if (superParent->inherits(TQDIALOG_OBJECT_NAME_STRING) || superParent->inherits(TQMAINWINDOW_OBJECT_NAME_STRING))
break;
}
return (TQWidget*)superParent;
}
TQString KommanderWidget::global(const TQString& variableName)
{
TQString var = variableName.startsWith("_") ? variableName : TQString("_")+ variableName;
Parser parser(internalParserData());
return parser.variable(var).toString();
}
void KommanderWidget::setGlobal(const TQString& variableName, const TQString& value)
{
TQString var = variableName.startsWith("_") ? variableName : TQString("_")+ variableName;
Parser parser(internalParserData());
parser.setVariable(var, value);
}
TQString KommanderWidget::handleDCOP(const int function, const TQStringList& args)
{
TQWidget* current = dynamic_cast<TQWidget*>(m_thisObject);
if (!current)
return TQString();
switch(function) {
case DCOP::setEnabled:
current->setEnabled( args[0] != "false" && args[0] != "0");
break;
case DCOP::setVisible:
current->setShown(args[0] != "false" && args[0] != "0");
break;
case DCOP::type:
return current->className();
case DCOP::tqchildren:
{
TQStringList matching;
TQObjectList* widgets = current->queryList(TQWIDGET_OBJECT_NAME_STRING, 0, false, args.count() == 0 || args[0] != "false");
for (TQObject* w = widgets->first(); w; w = widgets->next())
if (w->name() && (dynamic_cast<KommanderWidget*>(w)))
matching.append(w->name());
return matching.join("\n");
}
}
return TQString();
}
bool KommanderWidget::isFunctionSupported(int f)
{
return f == DCOP::setEnabled || f == DCOP::setVisible || f == DCOP::tqchildren || f == DCOP::type;
}
bool KommanderWidget::isCommonFunction(int f)
{
return f == DCOP::setEnabled || f == DCOP::setVisible || f == DCOP::tqchildren || f == DCOP::type;
}
ParserData* KommanderWidget::internalParserData() const
{
return m_parserData;
}
TQString KommanderWidget::fileName()
{
KommanderWindow* window = dynamic_cast<KommanderWindow*>(parentDialog());
if (window)
return TQString(window->fileName());
else
return TQString();
}
TQString KommanderWidget::widgetName() const
{
if (m_thisObject)
return TQString::tqfromLatin1(m_thisObject->name());
else
return TQString();
}
bool KommanderWidget::inEditor = false;
bool KommanderWidget::showErrors = true;
bool KommanderWidget::useInternalParser = false;
ParserData* KommanderWidget::m_parserData = new ParserData;
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