annotated nedresourcecache.cc

ASTNode *NedResourceCache::getFile(const char *fname) const
{
    // hash table lookup
    std::string key = tidyFilename(toAbsolutePath(fname).c_str());
    NedFileMap::const_iterator i = files.find(key);
    ASTNode *result = i == files.end() ? nullptr : i->second;

    std::cout << "getting file: " << fname << (result ? " it is found " : " NOT FOUND ") << std::endl;

    return result;
}

NedFileElement *NedResourceCache::getParentPackageNedFile(NedFileElement *nedfile) const
{
    std::string nedfilename = tidyFilename(toAbsolutePath(nedfile->getFilename()).c_str(), true);
    std::string dir, fname;
    splitFileName(nedfilename.c_str(), dir, fname);
    dir = tidyFilename(dir.c_str(), true);

    std::cout << "getParentPackage for " << nedfile->getFilename() << std::endl;

    std::string topDir = getNedSourceFolderForFolder(dir.c_str());

    std::cout << "topDir: " << topDir << std::endl;

    if (topDir.empty())
        return nullptr;

    if (fname != "package.ned") {
        // get package.ned from same package
        std::string _fn = tidyFilename(concatDirAndFile(dir.c_str(), "package.ned").c_str(), true);
        ASTNode *e = getFile(_fn.c_str());
        if (e) {
            std::cout << "early returning " << _fn << std::endl;
            return (NedFileElement *)e;
        }
    }

    // walk up in search for a package.ned
    while (dir != topDir) {
        // printf("%s   ~   %s\n", dir.c_str(), topDir.c_str());

        std::cout << "checking for dir " << dir << std::endl;

        // chop last segment
        std::string parentDir, dummy;
        splitFileName(dir.c_str(), parentDir, dummy);
        Assert(dir != parentDir);  // we should exit via reaching the NED source folder
        dir = tidyFilename(parentDir.c_str(), true);

        // return package.ned from this dir, if exists
        std::string _fn = tidyFilename(concatDirAndFile(dir.c_str(), "package.ned").c_str(), true);
        ASTNode *e = getFile(_fn.c_str());
        if (e) {
            std::cout << "returning file: " << _fn << std::endl;
            return (NedFileElement *)e;
        }
    }

    std::cout << "package ned file not found" << std::endl;
    return nullptr;
}