CMake/Source/cmSourceFile.cxx

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/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
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Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
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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.
============================================================================*/
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#include "cmSourceFile.h"
#include "cmGlobalGenerator.h"
#include "cmLocalGenerator.h"
#include "cmMakefile.h"
#include "cmSystemTools.h"
#include "cmake.h"
//----------------------------------------------------------------------------
cmSourceFile::cmSourceFile(cmMakefile* mf, const char* name):
Location(mf, name)
{
this->CustomCommand = 0;
this->Properties.SetCMakeInstance(mf->GetCMakeInstance());
this->FindFullPathFailed = false;
}
//----------------------------------------------------------------------------
cmSourceFile::~cmSourceFile()
{
this->SetCustomCommand(0);
}
//----------------------------------------------------------------------------
std::string const& cmSourceFile::GetExtension() const
{
return this->Extension;
}
//----------------------------------------------------------------------------
const char* cmSourceFile::GetLanguage()
{
// If the language was set explicitly by the user then use it.
if(const char* lang = this->GetProperty("LANGUAGE"))
{
return lang;
}
// Perform computation needed to get the language if necessary.
if(this->FullPath.empty() && this->Language.empty())
{
// If a known extension is given or a known full path is given
// then trust that the current extension is sufficient to
// determine the language. This will fail only if the user
// specifies a full path to the source but leaves off the
// extension, which is kind of weird.
if(this->Location.ExtensionIsAmbiguous() &&
this->Location.DirectoryIsAmbiguous())
{
// Finalize the file location to get the extension and set the
// language.
this->GetFullPath();
}
else
{
// Use the known extension to get the language if possible.
std::string ext =
cmSystemTools::GetFilenameLastExtension(this->Location.GetName());
this->CheckLanguage(ext);
}
}
// Now try to determine the language.
return static_cast<cmSourceFile const*>(this)->GetLanguage();
}
//----------------------------------------------------------------------------
const char* cmSourceFile::GetLanguage() const
{
// If the language was set explicitly by the user then use it.
if(const char* lang = this->GetProperty("LANGUAGE"))
{
return lang;
}
// If the language was determined from the source file extension use it.
if(!this->Language.empty())
{
return this->Language.c_str();
}
// The language is not known.
return 0;
}
//----------------------------------------------------------------------------
cmSourceFileLocation const& cmSourceFile::GetLocation() const
{
return this->Location;
}
//----------------------------------------------------------------------------
std::string const& cmSourceFile::GetFullPath(std::string* error)
{
if(this->FullPath.empty())
{
if(this->FindFullPath(error))
{
this->CheckExtension();
}
}
return this->FullPath;
}
//----------------------------------------------------------------------------
std::string const& cmSourceFile::GetFullPath() const
{
return this->FullPath;
}
//----------------------------------------------------------------------------
bool cmSourceFile::FindFullPath(std::string* error)
{
// If thie method has already failed once do not try again.
if(this->FindFullPathFailed)
{
return false;
}
// If the file is generated compute the location without checking on
// disk.
if(this->GetPropertyAsBool("GENERATED"))
{
// The file is either already a full path or is relative to the
// build directory for the target.
this->Location.DirectoryUseBinary();
this->FullPath = this->Location.GetDirectory();
this->FullPath += "/";
this->FullPath += this->Location.GetName();
return true;
}
// The file is not generated. It must exist on disk.
cmMakefile* mf = this->Location.GetMakefile();
const char* tryDirs[3] = {0, 0, 0};
if(this->Location.DirectoryIsAmbiguous())
{
tryDirs[0] = mf->GetCurrentDirectory();
tryDirs[1] = mf->GetCurrentOutputDirectory();
}
else
{
tryDirs[0] = "";
}
const std::vector<std::string>& srcExts = mf->GetSourceExtensions();
const std::vector<std::string>& hdrExts = mf->GetHeaderExtensions();
for(const char* const* di = tryDirs; *di; ++di)
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{
std::string tryPath = this->Location.GetDirectory();
if(!tryPath.empty())
{
tryPath += "/";
}
tryPath += this->Location.GetName();
tryPath = cmSystemTools::CollapseFullPath(tryPath.c_str(), *di);
if(this->TryFullPath(tryPath.c_str(), 0))
{
return true;
}
for(std::vector<std::string>::const_iterator ei = srcExts.begin();
ei != srcExts.end(); ++ei)
{
if(this->TryFullPath(tryPath.c_str(), ei->c_str()))
{
return true;
}
}
for(std::vector<std::string>::const_iterator ei = hdrExts.begin();
ei != hdrExts.end(); ++ei)
{
if(this->TryFullPath(tryPath.c_str(), ei->c_str()))
{
return true;
}
}
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}
cmOStringStream e;
std::string missing = this->Location.GetDirectory();
if(!missing.empty())
{
missing += "/";
}
missing += this->Location.GetName();
e << "Cannot find source file:\n " << missing << "\nTried extensions";
for(std::vector<std::string>::const_iterator ext = srcExts.begin();
ext != srcExts.end(); ++ext)
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{
e << " ." << *ext;
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}
for(std::vector<std::string>::const_iterator ext = hdrExts.begin();
ext != hdrExts.end(); ++ext)
{
e << " ." << *ext;
}
if(error)
{
*error = e.str();
}
else
{
this->Location.GetMakefile()->IssueMessage(cmake::FATAL_ERROR, e.str());
}
this->FindFullPathFailed = true;
return false;
}
//----------------------------------------------------------------------------
bool cmSourceFile::TryFullPath(const char* tp, const char* ext)
{
std::string tryPath = tp;
if(ext && *ext)
{
tryPath += ".";
tryPath += ext;
}
if(cmSystemTools::FileExists(tryPath.c_str()))
{
this->FullPath = tryPath;
return true;
}
return false;
}
//----------------------------------------------------------------------------
void cmSourceFile::CheckExtension()
{
// Compute the extension.
std::string realExt =
cmSystemTools::GetFilenameLastExtension(this->FullPath);
if(!realExt.empty())
{
// Store the extension without the leading '.'.
this->Extension = realExt.substr(1);
}
// Look for object files.
if(this->Extension == "obj" ||
this->Extension == "o" ||
this->Extension == "lo")
{
this->SetProperty("EXTERNAL_OBJECT", "1");
}
// Try to identify the source file language from the extension.
if(this->Language.empty())
{
this->CheckLanguage(this->Extension);
}
}
//----------------------------------------------------------------------------
void cmSourceFile::CheckLanguage(std::string const& ext)
{
// Try to identify the source file language from the extension.
cmMakefile* mf = this->Location.GetMakefile();
cmGlobalGenerator* gg = mf->GetLocalGenerator()->GetGlobalGenerator();
if(const char* l = gg->GetLanguageFromExtension(ext.c_str()))
{
this->Language = l;
}
}
//----------------------------------------------------------------------------
bool cmSourceFile::Matches(cmSourceFileLocation const& loc)
{
return this->Location.Matches(loc);
}
//----------------------------------------------------------------------------
void cmSourceFile::SetProperty(const char* prop, const char* value)
{
if (!prop)
{
return;
}
this->Properties.SetProperty(prop, value, cmProperty::SOURCE_FILE);
}
//----------------------------------------------------------------------------
void cmSourceFile::AppendProperty(const char* prop, const char* value,
bool asString)
{
if (!prop)
{
return;
}
this->Properties.AppendProperty(prop, value, cmProperty::SOURCE_FILE,
asString);
}
//----------------------------------------------------------------------------
const char* cmSourceFile::GetPropertyForUser(const char *prop)
{
// This method is a consequence of design history and backwards
// compatibility. GetProperty is (and should be) a const method.
// Computed properties should not be stored back in the property map
// but instead reference information already known. If they need to
// cache information in a mutable ivar to provide the return string
// safely then so be it.
//
// The LOCATION property is particularly problematic. The CMake
// language has very loose restrictions on the names that will match
// a given source file (for historical reasons). Implementing
// lookups correctly with such loose naming requires the
// cmSourceFileLocation class to commit to a particular full path to
// the source file as late as possible. If the users requests the
// LOCATION property we must commit now.
if(strcmp(prop, "LOCATION") == 0)
{
// Commit to a location.
this->GetFullPath();
}
// Perform the normal property lookup.
return this->GetProperty(prop);
}
//----------------------------------------------------------------------------
const char* cmSourceFile::GetProperty(const char* prop) const
{
// Check for computed properties.
if(strcmp(prop, "LOCATION") == 0)
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{
if(this->FullPath.empty())
{
return 0;
}
else
{
return this->FullPath.c_str();
}
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}
bool chain = false;
const char *retVal =
this->Properties.GetPropertyValue(prop, cmProperty::SOURCE_FILE, chain);
if (chain)
{
cmMakefile* mf = this->Location.GetMakefile();
return mf->GetProperty(prop,cmProperty::SOURCE_FILE);
}
return retVal;
}
//----------------------------------------------------------------------------
bool cmSourceFile::GetPropertyAsBool(const char* prop) const
{
return cmSystemTools::IsOn(this->GetProperty(prop));
}
//----------------------------------------------------------------------------
cmCustomCommand* cmSourceFile::GetCustomCommand()
{
return this->CustomCommand;
}
//----------------------------------------------------------------------------
cmCustomCommand const* cmSourceFile::GetCustomCommand() const
{
return this->CustomCommand;
}
//----------------------------------------------------------------------------
void cmSourceFile::SetCustomCommand(cmCustomCommand* cc)
{
cmCustomCommand* old = this->CustomCommand;
this->CustomCommand = cc;
delete old;
}