CMake/Source/cmSourceFileLocation.cxx

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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 "cmSourceFileLocation.h"
#include "cmMakefile.h"
#include "cmLocalGenerator.h"
#include "cmGlobalGenerator.h"
#include "cmSystemTools.h"
//----------------------------------------------------------------------------
cmSourceFileLocation
::cmSourceFileLocation(cmMakefile const* mf, const std::string& name)
: Makefile(mf)
{
this->AmbiguousDirectory = !cmSystemTools::FileIsFullPath(name.c_str());
this->AmbiguousExtension = true;
this->Directory = cmSystemTools::GetFilenamePath(name);
this->Name = cmSystemTools::GetFilenameName(name);
this->UpdateExtension(name);
}
//----------------------------------------------------------------------------
void cmSourceFileLocation::Update(const std::string& name)
{
if(this->AmbiguousDirectory)
{
this->UpdateDirectory(name);
}
if(this->AmbiguousExtension)
{
this->UpdateExtension(name);
}
}
//----------------------------------------------------------------------------
void cmSourceFileLocation::Update(cmSourceFileLocation const& loc)
{
if(this->AmbiguousDirectory && !loc.AmbiguousDirectory)
{
this->Directory = loc.Directory;
this->AmbiguousDirectory = false;
}
if(this->AmbiguousExtension && !loc.AmbiguousExtension)
{
this->Name = loc.Name;
this->AmbiguousExtension = false;
}
}
//----------------------------------------------------------------------------
void cmSourceFileLocation::DirectoryUseSource()
{
if(this->AmbiguousDirectory)
{
this->Directory =
cmSystemTools::CollapseFullPath(
this->Directory.c_str(), this->Makefile->GetCurrentDirectory());
this->AmbiguousDirectory = false;
}
}
//----------------------------------------------------------------------------
void cmSourceFileLocation::DirectoryUseBinary()
{
if(this->AmbiguousDirectory)
{
this->Directory =
cmSystemTools::CollapseFullPath(
this->Directory.c_str(), this->Makefile->GetCurrentOutputDirectory());
this->AmbiguousDirectory = false;
}
}
//----------------------------------------------------------------------------
void cmSourceFileLocation::UpdateExtension(const std::string& name)
{
// Check the extension.
std::string ext = cmSystemTools::GetFilenameLastExtension(name);
if(!ext.empty()) { ext = ext.substr(1); }
// The global generator checks extensions of enabled languages.
cmGlobalGenerator* gg =
this->Makefile->GetLocalGenerator()->GetGlobalGenerator();
cmMakefile const* mf = this->Makefile;
const std::vector<std::string>& srcExts = mf->GetSourceExtensions();
const std::vector<std::string>& hdrExts = mf->GetHeaderExtensions();
if(gg->GetLanguageFromExtension(ext.c_str()) ||
std::find(srcExts.begin(), srcExts.end(), ext) != srcExts.end() ||
std::find(hdrExts.begin(), hdrExts.end(), ext) != hdrExts.end())
{
// This is a known extension. Use the given filename with extension.
this->Name = cmSystemTools::GetFilenameName(name);
this->AmbiguousExtension = false;
}
else
{
// This is not a known extension. See if the file exists on disk as
// named.
std::string tryPath;
if(this->AmbiguousDirectory)
{
// Check the source tree only because a file in the build tree should
// be specified by full path at least once. We do not want this
// detection to depend on whether the project has already been built.
tryPath = this->Makefile->GetCurrentDirectory();
tryPath += "/";
}
if(!this->Directory.empty())
{
tryPath += this->Directory;
tryPath += "/";
}
tryPath += this->Name;
if(cmSystemTools::FileExists(tryPath.c_str(), true))
{
// We found a source file named by the user on disk. Trust it's
// extension.
this->Name = cmSystemTools::GetFilenameName(name);
this->AmbiguousExtension = false;
// If the directory was ambiguous, it isn't anymore.
if(this->AmbiguousDirectory)
{
this->DirectoryUseSource();
}
}
}
}
//----------------------------------------------------------------------------
void cmSourceFileLocation::UpdateDirectory(const std::string& name)
{
// If a full path was given we know the directory.
if(cmSystemTools::FileIsFullPath(name.c_str()))
{
this->Directory = cmSystemTools::GetFilenamePath(name);
this->AmbiguousDirectory = false;
}
}
//----------------------------------------------------------------------------
bool
cmSourceFileLocation
::MatchesAmbiguousExtension(cmSourceFileLocation const& loc) const
{
// This location's extension is not ambiguous but loc's extension
// is. See if the names match as-is.
if(this->Name == loc.Name)
{
return true;
}
// Check if loc's name could possibly be extended to our name by
// adding an extension.
if(!(this->Name.size() > loc.Name.size() &&
this->Name.substr(0, loc.Name.size()) == loc.Name &&
this->Name[loc.Name.size()] == '.'))
{
return false;
}
// Only a fixed set of extensions will be tried to match a file on
// disk. One of these must match if loc refers to this source file.
std::string ext = this->Name.substr(loc.Name.size()+1);
cmMakefile const* mf = this->Makefile;
const std::vector<std::string>& srcExts = mf->GetSourceExtensions();
if(std::find(srcExts.begin(), srcExts.end(), ext) != srcExts.end())
{
return true;
}
const std::vector<std::string>& hdrExts = mf->GetHeaderExtensions();
if(std::find(hdrExts.begin(), hdrExts.end(), ext) != hdrExts.end())
{
return true;
}
return false;
}
//----------------------------------------------------------------------------
bool cmSourceFileLocation::Matches(cmSourceFileLocation const& loc)
{
if(this->AmbiguousExtension && loc.AmbiguousExtension)
{
// Both extensions are ambiguous. Since only the old fixed set of
// extensions will be tried, the names must match at this point to
// be the same file.
if(this->Name != loc.Name)
{
return false;
}
}
else if(this->AmbiguousExtension)
{
// Only "this" extension is ambiguous.
if(!loc.MatchesAmbiguousExtension(*this))
{
return false;
}
}
else if(loc.AmbiguousExtension)
{
// Only "loc" extension is ambiguous.
if(!this->MatchesAmbiguousExtension(loc))
{
return false;
}
}
else
{
// Neither extension is ambiguous.
if(this->Name != loc.Name)
{
return false;
}
}
if(!this->AmbiguousDirectory && !loc.AmbiguousDirectory)
{
// Both sides have absolute directories.
if(this->Directory != loc.Directory)
{
return false;
}
}
else if(this->AmbiguousDirectory && loc.AmbiguousDirectory &&
this->Makefile == loc.Makefile)
{
// Both sides have directories relative to the same location.
if(this->Directory != loc.Directory)
{
return false;
}
}
else if(this->AmbiguousDirectory && loc.AmbiguousDirectory)
{
// Each side has a directory relative to a different location.
// This can occur when referencing a source file from a different
// directory. This is not yet allowed.
this->Makefile->IssueMessage(
cmake::INTERNAL_ERROR,
"Matches error: Each side has a directory relative to a different "
"location. This can occur when referencing a source file from a "
"different directory. This is not yet allowed."
);
return false;
}
else if(this->AmbiguousDirectory)
{
// Compare possible directory combinations.
std::string srcDir =
cmSystemTools::CollapseFullPath(
this->Directory.c_str(), this->Makefile->GetCurrentDirectory());
std::string binDir =
cmSystemTools::CollapseFullPath(
this->Directory.c_str(), this->Makefile->GetCurrentOutputDirectory());
if(srcDir != loc.Directory &&
binDir != loc.Directory)
{
return false;
}
}
else if(loc.AmbiguousDirectory)
{
// Compare possible directory combinations.
std::string srcDir =
cmSystemTools::CollapseFullPath(
loc.Directory.c_str(), loc.Makefile->GetCurrentDirectory());
std::string binDir =
cmSystemTools::CollapseFullPath(
loc.Directory.c_str(), loc.Makefile->GetCurrentOutputDirectory());
if(srcDir != this->Directory &&
binDir != this->Directory)
{
return false;
}
}
// File locations match.
this->Update(loc);
return true;
}