291 lines
8.1 KiB
C++
291 lines
8.1 KiB
C++
#ifdef _MSC_VER
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#pragma warning ( disable : 4786 )
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#endif
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#include "cmMakeDepend.h"
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#include "cmSystemTools.h"
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#include <fstream>
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#include <iostream>
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#include <algorithm>
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#include <functional>
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cmMakeDepend::cmMakeDepend()
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{
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m_Verbose = false;
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m_IncludeFileRegularExpression.compile("^itk|^vtk|^vnl|^vcl|^f2c");
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}
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// only files matching this regular expression with be considered
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void cmMakeDepend::SetIncludeRegularExpression(const char* prefix)
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{
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m_IncludeFileRegularExpression.compile(prefix);
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}
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cmMakeDepend::~cmMakeDepend()
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{
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for(DependArray::iterator i = m_DependInformation.begin();
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i != m_DependInformation.end(); ++i)
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{
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delete *i;
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}
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m_DependInformation.clear();
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}
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// Set the makefile that depends will be made from.
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// The pointer is kept so the cmClassFile array can
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// be updated with the depend information in the cmMakefile.
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void cmMakeDepend::SetMakefile(cmMakefile* makefile)
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{
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m_Makefile = makefile;
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// Now extract any include paths from the makefile flags
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cmCollectFlags& flags = m_Makefile->GetBuildFlags();
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std::vector<std::string>& includes = flags.GetIncludeDirectories();
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std::vector<std::string>::iterator j;
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for(j = includes.begin(); j != includes.end(); ++j)
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{
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cmSystemTools::ReplaceString(*j, "${CMAKE_CONFIG_DIR}",
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m_Makefile->GetOutputHomeDirectory() );
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cmSystemTools::ReplaceString(*j, "${srcdir}",
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m_Makefile->GetHomeDirectory() );
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this->AddSearchPath(j->c_str());
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}
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// Now create cmDependInformation objects for files in the directory
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int index = 0;
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std::vector<cmClassFile>::iterator i = makefile->m_Classes.begin();
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while(i != makefile->m_Classes.end())
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{
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if(!(*i).m_HeaderFileOnly)
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{
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cmDependInformation* info = new cmDependInformation;
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info->m_FullPath = this->FullPath((*i).m_FullPath.c_str());
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this->AddFileToSearchPath(info->m_FullPath.c_str());
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info->m_IncludeName = (*i).m_FullPath;
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m_DependInformation.push_back(info);
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info->m_ClassFileIndex = index;
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}
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++i;
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index++;
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}
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}
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// Compute the depends.
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void cmMakeDepend::DoDepends()
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{
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// The size of the m_DependInformation will change as
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// Depend is called so do not use an iterater but rather
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// depend on the size of the array.
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int j = 0;
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while(j != m_DependInformation.size())
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{
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cmDependInformation* info = m_DependInformation[j];
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// compute the depend information for the info object
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// this may add more objects to the m_DependInformation
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// array
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this->Depend(info);
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++j;
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}
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// Now update the depend information for each cmClassFile
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// in the cmMakefile m_Makefile
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for(DependArray::iterator i = m_DependInformation.begin();
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i != m_DependInformation.end(); ++i)
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{
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cmDependInformation* info = *i;
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// Remove duplicate depends
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info->RemoveDuplicateIndices();
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std::vector<cmClassFile>::iterator j = m_Makefile->m_Classes.begin();
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// find the class
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if(info->m_ClassFileIndex != -1)
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{
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cmClassFile& cfile = m_Makefile->m_Classes[info->m_ClassFileIndex];
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for( std::vector<int>::iterator indx = info->m_Indices.begin();
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indx != info->m_Indices.end(); ++indx)
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{
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cfile.m_Depends.push_back(m_DependInformation[*indx]->m_FullPath);
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}
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}
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}
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}
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// This function actually reads the file
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// and scans it for #include directives
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void cmMakeDepend::Depend(cmDependInformation* info)
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{
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const char* path = info->m_FullPath.c_str();
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if(!path)
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{
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std::cerr << "no full path for object" << std::endl;
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return;
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}
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std::ifstream fin(path);
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if(!fin)
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{
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std::cerr << "error can not open " << info->m_FullPath << std::endl;
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return;
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}
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char line[255];
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while(!fin.eof() && !fin.fail())
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{
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fin.getline(line, 255);
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if(!strncmp(line, "#include", 8))
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{
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// if it is an include line then create a string class
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std::string currentline = line;
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size_t qstart = currentline.find('\"', 8);
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size_t qend;
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// if a quote is not found look for a <
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if(qstart == std::string::npos)
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{
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qstart = currentline.find('<', 8);
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// if a < is not found then move on
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if(qstart == std::string::npos)
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{
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std::cerr << "unknown include directive " << currentline
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<< std::endl;
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continue;
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}
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else
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{
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qend = currentline.find('>', qstart+1);
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}
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}
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else
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{
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qend = currentline.find('\"', qstart+1);
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}
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// extract the file being included
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std::string includeFile = currentline.substr(qstart+1, qend - qstart-1);
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// see if the include matches the regular expression
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if(!m_IncludeFileRegularExpression.find(includeFile))
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{
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if(m_Verbose)
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{
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std::cerr << "skipping " << includeFile << " for file " << path << std::endl;
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}
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continue;
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}
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// find the index of the include file in the
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// m_DependInformation array, if it is not
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// there then FindInformation will create it
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int index = this->FindInformation(includeFile.c_str());
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// add the index to the depends of the current
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// depend info object
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info->m_Indices.push_back(index);
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// Get the depend information object for the include file
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cmDependInformation* dependInfo = m_DependInformation[index];
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// if the depends are not known for an include file, then compute them
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// recursively
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if(!dependInfo->m_DependDone)
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{
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// stop the recursion here
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dependInfo->m_DependDone = true;
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this->Depend(dependInfo);
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}
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// add the depends of the included file to the includer
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info->MergeInfo(dependInfo);
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}
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}
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info->m_DependDone = true;
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}
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// Find the cmDependInformation array index of the
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// given include file. Create a new cmDependInformation
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// object if one is not found
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int cmMakeDepend::FindInformation(const char* fname)
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{
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int i = 0;
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while(i < m_DependInformation.size())
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{
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if(m_DependInformation[i]->m_IncludeName == fname)
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{
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return i;
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}
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++i;
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}
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cmDependInformation* newinfo = new cmDependInformation;
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newinfo->m_FullPath = this->FullPath(fname);
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// Add the directory where this file was found to the search path
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// may have been foo/bar.h, but bar may include files from the foo
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// directory without the foo prefix
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this->AddFileToSearchPath(newinfo->m_FullPath.c_str());
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newinfo->m_IncludeName = fname;
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m_DependInformation.push_back(newinfo);
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return m_DependInformation.size()-1;
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}
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// remove duplicate indices from the depend information
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void cmDependInformation::RemoveDuplicateIndices()
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{
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// sort the array
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std::sort(m_Indices.begin(), m_Indices.end(), std::less<int>());
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// remove duplicates
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std::vector<int>::iterator new_end =
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std::unique(m_Indices.begin(), m_Indices.end());
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m_Indices.erase(new_end, m_Indices.end());
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}
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// add the depend information from info to the m_Indices varible of this class.
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void cmDependInformation::MergeInfo(cmDependInformation* info)
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{
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std::vector<int>::iterator i = info->m_Indices.begin();
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for(; i!= info->m_Indices.end(); ++i)
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{
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m_Indices.push_back(*i);
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}
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}
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// find the full path to fname by searching the m_IncludeDirectories array
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std::string cmMakeDepend::FullPath(const char* fname)
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{
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for(std::vector<std::string>::iterator i = m_IncludeDirectories.begin();
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i != m_IncludeDirectories.end(); ++i)
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{
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if(cmSystemTools::FileExists(fname))
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{
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return std::string(fname);
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}
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std::string path = *i;
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path = path + "/";
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path = path + fname;
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if(cmSystemTools::FileExists(path.c_str()))
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{
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return path;
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}
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}
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std::cerr << "Depend: File not found " << fname << std::endl;
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return std::string(fname);
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}
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// Add a directory to the search path
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void cmMakeDepend::AddSearchPath(const char* path)
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{
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m_IncludeDirectories.push_back(path);
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}
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// Add a directory to the search path
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void cmMakeDepend::AddFileToSearchPath(const char* file)
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{
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std::string filepath = file;
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std::string::size_type pos = filepath.rfind('/');
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if(pos != std::string::npos)
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{
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std::string path = filepath.substr(0, pos);
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if(std::find(m_IncludeDirectories.begin(), m_IncludeDirectories.end(), path)
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== m_IncludeDirectories.end())
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{
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m_IncludeDirectories.push_back(path);
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return;
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}
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}
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}
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