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/*=========================================================================
Program: CMake - Cross-Platform Makefile Generator
Module: $RCSfile$
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#include "cmDepends.h"
#include "cmGeneratedFileStream.h"
#include "cmSystemTools.h"
#include <assert.h>
//----------------------------------------------------------------------------
cmDepends::cmDepends(const char* dir, const char* targetFile):
m_Directory(dir),
m_TargetFile(targetFile),
m_DependsMakeFile(dir),
m_DependsMarkFile(dir)
{
// Construct the path to the make and mark files. Append
// appropriate extensions to their names.
m_DependsMakeFile += "/";
m_DependsMarkFile += "/";
m_DependsMakeFile += m_TargetFile;
m_DependsMarkFile += m_TargetFile;
m_DependsMakeFile += ".depends.make";
m_DependsMarkFile += ".depends";
}
//----------------------------------------------------------------------------
cmDepends::~cmDepends()
{
}
//----------------------------------------------------------------------------
bool cmDepends::Write()
{
// Dependency generation must always be done in the current working
// directory.
assert(m_Directory == ".");
// Try to generate dependencies for the target file.
cmGeneratedFileStream fout(m_DependsMakeFile.c_str());
fout << "# Dependencies for " << m_TargetFile.c_str() << std::endl;
if(this->WriteDependencies(fout) && fout)
{
// Dependencies were generated. Touch the mark file.
std::ofstream fmark(m_DependsMarkFile.c_str());
fmark << "Dependencies updated for " << m_TargetFile.c_str() << std::endl;
return true;
}
else
{
return false;
}
}
//----------------------------------------------------------------------------
void cmDepends::Check()
{
// Dependency checks must be done in proper working directory.
std::string oldcwd = ".";
if(m_Directory != ".")
{
// Get the CWD but do not call CollapseFullPath because
// we only need it to cd back, and the form does not matter
oldcwd = cmSystemTools::GetCurrentWorkingDirectory(false);
cmSystemTools::ChangeDirectory(m_Directory.c_str());
}
// Check whether dependencies must be regenerated.
std::ifstream fin(m_DependsMakeFile.c_str());
if(!(fin && this->CheckDependencies(fin)))
{
// Clear all dependencies so they will be regenerated.
this->Clear();
}
// Restore working directory.
if(oldcwd != ".")
{
cmSystemTools::ChangeDirectory(oldcwd.c_str());
}
}
//----------------------------------------------------------------------------
void cmDepends::Clear()
{
// Remove the dependency mark file to be sure dependencies will be
// regenerated.
cmSystemTools::RemoveFile(m_DependsMarkFile.c_str());
// Write an empty dependency file.
cmGeneratedFileStream depFileStream(m_DependsMakeFile.c_str());
depFileStream
<< "# Empty dependencies file for " << m_TargetFile.c_str() << ".\n"
<< "# This may be replaced when dependencies are built." << std::endl;
}
//----------------------------------------------------------------------------
const char* cmDepends::GetMakeFileName()
{
// Skip over the directory part of the name.
return m_DependsMakeFile.c_str() + m_Directory.length() + 1;
}
//----------------------------------------------------------------------------
const char* cmDepends::GetMarkFileName()
{
// Skip over the directory part of the name.
return m_DependsMarkFile.c_str() + m_Directory.length() + 1;
}
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