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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#include "itkTclCommand.h"
namespace itk
{
TclCommand::TclCommand()
{
m_Interpreter = 0;
}
///! Set the interpreter in which the command is to be invoked.
void TclCommand::SetInterpreter(Tcl_Interp* interp)
{
m_Interpreter = interp;
}
///! Get the interpreter in which the command will be invoked.
Tcl_Interp* TclCommand::GetInterpreter() const
{
return m_Interpreter;
}
///! Set the command to invoke in the interpreter.
void TclCommand::SetCommandString(const char* commandString)
{
m_CommandString = commandString;
}
///! Get the command that will be invoked in the interpreter.
const char* TclCommand::GetCommandString() const
{
return m_CommandString.c_str();
}
///! Execute the callback to the Tcl interpreter.
void TclCommand::Execute(Object*, const EventObject &)
{
this->TclExecute();
}
///! Execute the callback to the Tcl interpreter with a const LightObject
void TclCommand::Execute(const Object*, const EventObject & )
{
this->TclExecute();
}
/**
* Invokes the registered command in the Tcl interpreter. Reports
* command errors as ITK warnings.
*/
void TclCommand::TclExecute() const
{
// Make sure an interpreter has been assigned.
if(!m_Interpreter)
{
itkWarningMacro("Error in itk/tcl callback:\n" <<
m_CommandString.c_str() << std::endl <<
"invoked with no interpreter!");
return;
}
// Try to evaluate the command in the interpreter.
if(Tcl_GlobalEval(m_Interpreter,
const_cast<char*>(m_CommandString.c_str())) == TCL_ERROR)
{
const char* errorInfo = Tcl_GetVar(m_Interpreter, "errorInfo", 0);
if(!errorInfo) { errorInfo = ""; }
itkWarningMacro("Error returned from itk/tcl callback:\n" <<
m_CommandString.c_str() << std::endl << errorInfo <<
" at line number " << m_Interpreter->errorLine);
}
}
} // namespace itk
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