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/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
#include "cmVariableWatchCommand.h"
#include "cmVariableWatch.h"
//----------------------------------------------------------------------------
struct cmVariableWatchCallbackData
{
bool InCallback;
std::string Command;
};
//----------------------------------------------------------------------------
static void cmVariableWatchCommandVariableAccessed(
const std::string& variable, int access_type, void* client_data,
const char* newValue, const cmMakefile* mf)
{
cmVariableWatchCallbackData* data
= static_cast<cmVariableWatchCallbackData*>(client_data);
if ( data->InCallback )
{
return;
}
data->InCallback = true;
cmListFileFunction newLFF;
cmListFileArgument arg;
bool processed = false;
const char* accessString = cmVariableWatch::GetAccessAsString(access_type);
const char* currentListFile = mf->GetDefinition("CMAKE_CURRENT_LIST_FILE");
/// Ultra bad!!
cmMakefile* makefile = const_cast<cmMakefile*>(mf);
std::string stack = makefile->GetProperty("LISTFILE_STACK");
if ( !data->Command.empty() )
{
newLFF.Arguments.clear();
newLFF.Arguments.push_back(
cmListFileArgument(variable, cmListFileArgument::Quoted,
9999));
newLFF.Arguments.push_back(
cmListFileArgument(accessString, cmListFileArgument::Quoted,
9999));
newLFF.Arguments.push_back(
cmListFileArgument(newValue?newValue:"", cmListFileArgument::Quoted,
9999));
newLFF.Arguments.push_back(
cmListFileArgument(currentListFile, cmListFileArgument::Quoted,
9999));
newLFF.Arguments.push_back(
cmListFileArgument(stack, cmListFileArgument::Quoted,
9999));
newLFF.Name = data->Command;
newLFF.Line = 9999;
cmExecutionStatus status;
if(!makefile->ExecuteCommand(newLFF,status))
{
std::ostringstream error;
error << "Error in cmake code at\nUnknown:0:\n"
<< "A command failed during the invocation of callback \""
<< data->Command << "\".";
cmSystemTools::Error(error.str().c_str());
data->InCallback = false;
return;
}
processed = true;
}
if ( !processed )
{
std::ostringstream msg;
msg << "Variable \"" << variable << "\" was accessed using "
<< accessString << " with value \"" << (newValue?newValue:"") << "\".";
makefile->IssueMessage(cmake::LOG, msg.str());
}
data->InCallback = false;
}
//----------------------------------------------------------------------------
static void deleteVariableWatchCallbackData(void* client_data)
{
cmVariableWatchCallbackData* data
= static_cast<cmVariableWatchCallbackData*>(client_data);
delete data;
}
//----------------------------------------------------------------------------
cmVariableWatchCommand::cmVariableWatchCommand()
{
}
//----------------------------------------------------------------------------
cmVariableWatchCommand::~cmVariableWatchCommand()
{
std::set<std::string>::const_iterator it;
for ( it = this->WatchedVariables.begin();
it != this->WatchedVariables.end();
++it )
{
this->Makefile->GetCMakeInstance()->GetVariableWatch()->RemoveWatch(
*it, cmVariableWatchCommandVariableAccessed);
}
}
//----------------------------------------------------------------------------
bool cmVariableWatchCommand
::InitialPass(std::vector<std::string> const& args, cmExecutionStatus &)
{
if ( args.size() < 1 )
{
this->SetError("must be called with at least one argument.");
return false;
}
std::string variable = args[0];
std::string command;
if ( args.size() > 1 )
{
command = args[1];
}
if ( variable == "CMAKE_CURRENT_LIST_FILE" )
{
std::ostringstream ostr;
ostr << "cannot be set on the variable: " << variable;
this->SetError(ostr.str());
return false;
}
cmVariableWatchCallbackData* data = new cmVariableWatchCallbackData;
data->InCallback = false;
data->Command = command;
this->WatchedVariables.insert(variable);
if ( !this->Makefile->GetCMakeInstance()->GetVariableWatch()->AddWatch(
variable, cmVariableWatchCommandVariableAccessed,
data, deleteVariableWatchCallbackData) )
{
deleteVariableWatchCallbackData(data);
return false;
}
return true;
}
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