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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 "cmOutputRequiredFilesCommand.h"
#include "cmAlgorithms.h"
#include <cmsys/FStream.hxx>
/** \class cmDependInformation
* \brief Store dependency information for a single source file.
*
* This structure stores the depend information for a single source file.
*/
class cmDependInformation
{
public:
/**
* Construct with dependency generation marked not done; instance
* not placed in cmMakefile's list.
*/
cmDependInformation()
: DependDone(false)
, SourceFile(CM_NULLPTR)
{
}
/**
* The set of files on which this one depends.
*/
typedef std::set<cmDependInformation*> DependencySetType;
DependencySetType DependencySet;
/**
* This flag indicates whether dependency checking has been
* performed for this file.
*/
bool DependDone;
/**
* If this object corresponds to a cmSourceFile instance, this points
* to it.
*/
const cmSourceFile* SourceFile;
/**
* Full path to this file.
*/
std::string FullPath;
/**
* Full path not including file name.
*/
std::string PathOnly;
/**
* Name used to #include this file.
*/
std::string IncludeName;
/**
* This method adds the dependencies of another file to this one.
*/
void AddDependencies(cmDependInformation* info)
{
if (this != info) {
this->DependencySet.insert(info);
}
}
};
class cmLBDepend
{
public:
/**
* Construct the object with verbose turned off.
*/
cmLBDepend()
{
this->Verbose = false;
this->IncludeFileRegularExpression.compile("^.*$");
this->ComplainFileRegularExpression.compile("^$");
}
/**
* Destructor.
*/
~cmLBDepend() { cmDeleteAll(this->DependInformationMap); }
/**
* Set the makefile that is used as a source of classes.
*/
void SetMakefile(cmMakefile* makefile)
{
this->Makefile = makefile;
// Now extract the include file regular expression from the makefile.
this->IncludeFileRegularExpression.compile(
this->Makefile->GetIncludeRegularExpression());
this->ComplainFileRegularExpression.compile(
this->Makefile->GetComplainRegularExpression());
// Now extract any include paths from the targets
std::set<std::string> uniqueIncludes;
std::vector<std::string> orderedAndUniqueIncludes;
cmTargets& targets = this->Makefile->GetTargets();
for (cmTargets::iterator l = targets.begin(); l != targets.end(); ++l) {
const char* incDirProp = l->second.GetProperty("INCLUDE_DIRECTORIES");
if (!incDirProp) {
continue;
}
std::string incDirs = cmGeneratorExpression::Preprocess(
incDirProp, cmGeneratorExpression::StripAllGeneratorExpressions);
std::vector<std::string> includes;
cmSystemTools::ExpandListArgument(incDirs, includes);
for (std::vector<std::string>::const_iterator j = includes.begin();
j != includes.end(); ++j) {
std::string path = *j;
this->Makefile->ExpandVariablesInString(path);
if (uniqueIncludes.insert(path).second) {
orderedAndUniqueIncludes.push_back(path);
}
}
}
for (std::vector<std::string>::const_iterator it =
orderedAndUniqueIncludes.begin();
it != orderedAndUniqueIncludes.end(); ++it) {
this->AddSearchPath(*it);
}
}
/**
* Add a directory to the search path for include files.
*/
void AddSearchPath(const std::string& path)
{
this->IncludeDirectories.push_back(path);
}
/**
* Generate dependencies for the file given. Returns a pointer to
* the cmDependInformation object for the file.
*/
const cmDependInformation* FindDependencies(const char* file)
{
cmDependInformation* info = this->GetDependInformation(file, CM_NULLPTR);
this->GenerateDependInformation(info);
return info;
}
protected:
/**
* Compute the depend information for this class.
*/
void DependWalk(cmDependInformation* info)
{
cmsys::ifstream fin(info->FullPath.c_str());
if (!fin) {
cmSystemTools::Error("error can not open ", info->FullPath.c_str());
return;
}
std::string line;
while (cmSystemTools::GetLineFromStream(fin, line)) {
if (cmHasLiteralPrefix(line.c_str(), "#include")) {
// if it is an include line then create a string class
std::string currentline = line;
size_t qstart = currentline.find('\"', 8);
size_t qend;
// if a quote is not found look for a <
if (qstart == std::string::npos) {
qstart = currentline.find('<', 8);
// if a < is not found then move on
if (qstart == std::string::npos) {
cmSystemTools::Error("unknown include directive ",
currentline.c_str());
continue;
} else {
qend = currentline.find('>', qstart + 1);
}
} else {
qend = currentline.find('\"', qstart + 1);
}
// extract the file being included
std::string includeFile =
currentline.substr(qstart + 1, qend - qstart - 1);
// see if the include matches the regular expression
if (!this->IncludeFileRegularExpression.find(includeFile)) {
if (this->Verbose) {
std::string message = "Skipping ";
message += includeFile;
message += " for file ";
message += info->FullPath.c_str();
cmSystemTools::Error(message.c_str(), CM_NULLPTR);
}
continue;
}
// Add this file and all its dependencies.
this->AddDependency(info, includeFile.c_str());
/// add the cxx file if it exists
std::string cxxFile = includeFile;
std::string::size_type pos = cxxFile.rfind('.');
if (pos != std::string::npos) {
std::string root = cxxFile.substr(0, pos);
cxxFile = root + ".cxx";
bool found = false;
// try jumping to .cxx .cpp and .c in order
if (cmSystemTools::FileExists(cxxFile.c_str())) {
found = true;
}
for (std::vector<std::string>::iterator i =
this->IncludeDirectories.begin();
i != this->IncludeDirectories.end(); ++i) {
std::string path = *i;
path = path + "/";
path = path + cxxFile;
if (cmSystemTools::FileExists(path.c_str())) {
found = true;
}
}
if (!found) {
cxxFile = root + ".cpp";
if (cmSystemTools::FileExists(cxxFile.c_str())) {
found = true;
}
for (std::vector<std::string>::iterator i =
this->IncludeDirectories.begin();
i != this->IncludeDirectories.end(); ++i) {
std::string path = *i;
path = path + "/";
path = path + cxxFile;
if (cmSystemTools::FileExists(path.c_str())) {
found = true;
}
}
}
if (!found) {
cxxFile = root + ".c";
if (cmSystemTools::FileExists(cxxFile.c_str())) {
found = true;
}
for (std::vector<std::string>::iterator i =
this->IncludeDirectories.begin();
i != this->IncludeDirectories.end(); ++i) {
std::string path = *i;
path = path + "/";
path = path + cxxFile;
if (cmSystemTools::FileExists(path.c_str())) {
found = true;
}
}
}
if (!found) {
cxxFile = root + ".txx";
if (cmSystemTools::FileExists(cxxFile.c_str())) {
found = true;
}
for (std::vector<std::string>::iterator i =
this->IncludeDirectories.begin();
i != this->IncludeDirectories.end(); ++i) {
std::string path = *i;
path = path + "/";
path = path + cxxFile;
if (cmSystemTools::FileExists(path.c_str())) {
found = true;
}
}
}
if (found) {
this->AddDependency(info, cxxFile.c_str());
}
}
}
}
}
/**
* Add a dependency. Possibly walk it for more dependencies.
*/
void AddDependency(cmDependInformation* info, const char* file)
{
cmDependInformation* dependInfo =
this->GetDependInformation(file, info->PathOnly.c_str());
this->GenerateDependInformation(dependInfo);
info->AddDependencies(dependInfo);
}
/**
* Fill in the given object with dependency information. If the
* information is already complete, nothing is done.
*/
void GenerateDependInformation(cmDependInformation* info)
{
// If dependencies are already done, stop now.
if (info->DependDone) {
return;
} else {
// Make sure we don't visit the same file more than once.
info->DependDone = true;
}
const char* path = info->FullPath.c_str();
if (!path) {
cmSystemTools::Error(
"Attempt to find dependencies for file without path!");
return;
}
bool found = false;
// If the file exists, use it to find dependency information.
if (cmSystemTools::FileExists(path, true)) {
// Use the real file to find its dependencies.
this->DependWalk(info);
found = true;
}
// See if the cmSourceFile for it has any files specified as
// dependency hints.
if (info->SourceFile != CM_NULLPTR) {
// Get the cmSourceFile corresponding to this.
const cmSourceFile& cFile = *(info->SourceFile);
// See if there are any hints for finding dependencies for the missing
// file.
if (!cFile.GetDepends().empty()) {
// Dependency hints have been given. Use them to begin the
// recursion.
for (std::vector<std::string>::const_iterator file =
cFile.GetDepends().begin();
file != cFile.GetDepends().end(); ++file) {
this->AddDependency(info, file->c_str());
}
// Found dependency information. We are done.
found = true;
}
}
if (!found) {
// Try to find the file amongst the sources
cmSourceFile* srcFile = this->Makefile->GetSource(
cmSystemTools::GetFilenameWithoutExtension(path));
if (srcFile) {
if (srcFile->GetFullPath() == path) {
found = true;
} else {
// try to guess which include path to use
for (std::vector<std::string>::iterator t =
this->IncludeDirectories.begin();
t != this->IncludeDirectories.end(); ++t) {
std::string incpath = *t;
if (!incpath.empty() && incpath[incpath.size() - 1] != '/') {
incpath = incpath + "/";
}
incpath = incpath + path;
if (srcFile->GetFullPath() == incpath) {
// set the path to the guessed path
info->FullPath = incpath;
found = true;
}
}
}
}
}
if (!found) {
// Couldn't find any dependency information.
if (this->ComplainFileRegularExpression.find(
info->IncludeName.c_str())) {
cmSystemTools::Error("error cannot find dependencies for ", path);
} else {
// Destroy the name of the file so that it won't be output as a
// dependency.
info->FullPath = "";
}
}
}
/**
* Get an instance of cmDependInformation corresponding to the given file
* name.
*/
cmDependInformation* GetDependInformation(const char* file,
const char* extraPath)
{
// Get the full path for the file so that lookup is unambiguous.
std::string fullPath = this->FullPath(file, extraPath);
// Try to find the file's instance of cmDependInformation.
DependInformationMapType::const_iterator result =
this->DependInformationMap.find(fullPath);
if (result != this->DependInformationMap.end()) {
// Found an instance, return it.
return result->second;
} else {
// Didn't find an instance. Create a new one and save it.
cmDependInformation* info = new cmDependInformation;
info->FullPath = fullPath;
info->PathOnly = cmSystemTools::GetFilenamePath(fullPath);
info->IncludeName = file;
this->DependInformationMap[fullPath] = info;
return info;
}
}
/**
* Find the full path name for the given file name.
* This uses the include directories.
* TODO: Cache path conversions to reduce FileExists calls.
*/
std::string FullPath(const char* fname, const char* extraPath)
{
DirectoryToFileToPathMapType::iterator m;
if (extraPath) {
m = this->DirectoryToFileToPathMap.find(extraPath);
} else {
m = this->DirectoryToFileToPathMap.find("");
}
if (m != this->DirectoryToFileToPathMap.end()) {
FileToPathMapType& map = m->second;
FileToPathMapType::iterator p = map.find(fname);
if (p != map.end()) {
return p->second;
}
}
if (cmSystemTools::FileExists(fname, true)) {
std::string fp = cmSystemTools::CollapseFullPath(fname);
this->DirectoryToFileToPathMap[extraPath ? extraPath : ""][fname] = fp;
return fp;
}
for (std::vector<std::string>::iterator i =
this->IncludeDirectories.begin();
i != this->IncludeDirectories.end(); ++i) {
std::string path = *i;
if (!path.empty() && path[path.size() - 1] != '/') {
path = path + "/";
}
path = path + fname;
if (cmSystemTools::FileExists(path.c_str(), true) &&
!cmSystemTools::FileIsDirectory(path)) {
std::string fp = cmSystemTools::CollapseFullPath(path);
this->DirectoryToFileToPathMap[extraPath ? extraPath : ""][fname] = fp;
return fp;
}
}
if (extraPath) {
std::string path = extraPath;
if (!path.empty() && path[path.size() - 1] != '/') {
path = path + "/";
}
path = path + fname;
if (cmSystemTools::FileExists(path.c_str(), true) &&
!cmSystemTools::FileIsDirectory(path)) {
std::string fp = cmSystemTools::CollapseFullPath(path);
this->DirectoryToFileToPathMap[extraPath][fname] = fp;
return fp;
}
}
// Couldn't find the file.
return std::string(fname);
}
cmMakefile* Makefile;
bool Verbose;
cmsys::RegularExpression IncludeFileRegularExpression;
cmsys::RegularExpression ComplainFileRegularExpression;
std::vector<std::string> IncludeDirectories;
typedef std::map<std::string, std::string> FileToPathMapType;
typedef std::map<std::string, FileToPathMapType>
DirectoryToFileToPathMapType;
typedef std::map<std::string, cmDependInformation*> DependInformationMapType;
DependInformationMapType DependInformationMap;
DirectoryToFileToPathMapType DirectoryToFileToPathMap;
};
// cmOutputRequiredFilesCommand
bool cmOutputRequiredFilesCommand::InitialPass(
std::vector<std::string> const& args, cmExecutionStatus&)
{
if (this->Disallowed(cmPolicies::CMP0032, "The output_required_files "
"command should not be called; "
"see CMP0032.")) {
return true;
}
if (args.size() != 2) {
this->SetError("called with incorrect number of arguments");
return false;
}
// store the arg for final pass
this->File = args[0];
this->OutputFile = args[1];
// compute the list of files
cmLBDepend md;
md.SetMakefile(this->Makefile);
md.AddSearchPath(this->Makefile->GetCurrentSourceDirectory());
// find the depends for a file
const cmDependInformation* info = md.FindDependencies(this->File.c_str());
if (info) {
// write them out
FILE* fout = cmsys::SystemTools::Fopen(this->OutputFile.c_str(), "w");
if (!fout) {
std::string err = "Can not open output file: ";
err += this->OutputFile;
this->SetError(err);
return false;
}
std::set<cmDependInformation const*> visited;
this->ListDependencies(info, fout, &visited);
fclose(fout);
}
return true;
}
void cmOutputRequiredFilesCommand::ListDependencies(
cmDependInformation const* info, FILE* fout,
std::set<cmDependInformation const*>* visited)
{
// add info to the visited set
visited->insert(info);
// now recurse with info's dependencies
for (cmDependInformation::DependencySetType::const_iterator d =
info->DependencySet.begin();
d != info->DependencySet.end(); ++d) {
if (visited->find(*d) == visited->end()) {
if (info->FullPath != "") {
std::string tmp = (*d)->FullPath;
std::string::size_type pos = tmp.rfind('.');
if (pos != std::string::npos && (tmp.substr(pos) != ".h")) {
tmp = tmp.substr(0, pos);
fprintf(fout, "%s\n", (*d)->FullPath.c_str());
}
}
this->ListDependencies(*d, fout, visited);
}
}
}
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