C++ inode_state::getCwd方法代码示例

void fn_make (inode_state& state, const wordvec& words){
   DEBUGF ('c', state);
   DEBUGF ('c', words);
   if (words.size() <= 0){
      cout << "mkdir: missing operand" << endl;
      return;
   }
   wordvec newData(words.begin()+2, words.end());

   wordvec pathvec = split (words[1], "/");
   string fullpath = "";
   string filename = *(pathvec.end()-1);
   for (auto it = pathvec.begin(); it != pathvec.end()-1; ++it)
      fullpath += (*it + "/");
   inode_ptr res = resolvePath(fullpath, state.getCwd()); //resulting path before filename
   if (res == nullptr) return;
   inode_ptr file = res->getContents()->getNode(filename); //search directory for filename if existing
   if (file != nullptr && res != nullptr) {
      if(file->isDirectory()) //getContents()->getNode(words[1])
         return;
      file->getContents()->writefile(newData);
      return;
   }
   res->getContents()->mkfile(filename);
   res->getContents()->getNode(filename)->getContents()->writefile(newData);

   inode_ptr ogcwd = state.getCwd();
   //inode_ptr newFile = state.getCwd()->getContents()->mkfile(words[1]);
   //wordvec newData(words.begin()+2, words.end());
   //newFile->getContents()->writefile(newData);
}

void fn_cat (inode_state& state, const wordvec& words){
   DEBUGF ('c', state);
   DEBUGF ('c', words);
   string filename = *(words.end()-1);
   inode_ptr ogcwd = state.getCwd();
   inode_ptr res = resolvePath(words[1], state.getCwd());
   if (res == nullptr){
      throw command_error ("cat: " + filename + ": file does not exist");
      return; }
   if (res->isDirectory()) return; //error here
   cout << res->getContents()->readfile() << endl;
}

void fn_cd (inode_state& state, const wordvec& words){
   DEBUGF ('c', state);
   DEBUGF ('c', words);
   inode_ptr ogcwd = state.getCwd();
   if (words.size() == 1){
      state.setCwd(state.getRoot()->getContents()->getNode("/"));
      return;
   }
   if (words.size() > 2) return;
   if (ogcwd == state.getRoot()->getContents()->getNode("/") && words[1] == "..") return;
   inode_ptr res = resolvePath(words[1], state.getCwd());
   if (res == nullptr) return;
   if (!res->isDirectory()) return;
   state.setCwd(res);
}

void fn_ls (inode_state& state, const wordvec& words){
   DEBUGF ('c', state);
   DEBUGF ('c', words);
   inode_ptr ogcwd = state.getCwd();
   inode_ptr res = ogcwd;
   if(words.size() > 1)
      res = resolvePath(words[1], state.getCwd());
   if (res == nullptr) return;
   auto pathList = res->getContents()->getAllPaths();
   state.setCwd(res);
   fn_pwd(state, words);
   for (size_t i = 0; i < pathList.size(); i++){
      cout << pathList[i] << endl;
   }
   state.setCwd(ogcwd);
}

void fn_rm (inode_state& state, const wordvec& words){
   DEBUGF ('c', state);
   DEBUGF ('c', words);
   if (words.size() <= 0) return; //error here?
   wordvec pathvec = split(words[1],"/");
   string fullpath = "";
   string name = *(pathvec.end()-1);
   for (auto it = pathvec.begin(); it != pathvec.end()-1; ++it)
      fullpath += (*it + "/");
   inode_ptr res = resolvePath(fullpath,state.getCwd());
   if (res == nullptr) return; //error
   inode_ptr rmfile = res->getContents()->getNode(name);
   if (res != nullptr && rmfile != nullptr){
      if(rmfile->isDirectory()){
         if(rmfile->getContents()->getAllPaths().size() <= 2){
            res->getContents()->remove(name);
            return;
         } else { return; /* not empty */ }}
         res->getContents()->remove(name);
         return;
   }
   /*
   for (auto it = words.begin()+1; it != words.end(); ++it){
      state.getCwd()->getContents()->remove(*it);
   }
   */
}

void fn_lsr (inode_state& state, const wordvec& words){
   DEBUGF ('c', state);
   DEBUGF ('c', words);

   inode_ptr ogcwd = state.getCwd();
   inode_ptr newCwd = ogcwd;
   if (words.size() > 0){
      newCwd = resolvePath(words[1], state.getCwd());
      state.setCwd(newCwd);
   }
   auto pathList = newCwd->getContents()->getAllDirs();
   wordvec ls {"ls"};
   fn_ls(state, ls);
   for(int i = 0; i < pathList.size(); i++){
      DFS(pathList[i], state);
   }
   state.setCwd(ogcwd);
}

void fn_mkdir (inode_state& state, const wordvec& words){
   DEBUGF ('c', state);
   DEBUGF ('c', words);

   if (words.size() <= 0){
      cout << "mkdir: missing operand" << endl;
      return;
   }
   //root case?
   if (words[1] == "/"){
      inode_ptr ogcwd = state.getCwd();
      auto root = state.getCwd()->getContents()->mkdir(words[1]);
      root->getContents()->setPath("..", ogcwd);
      root->getContents()->setPath(".", root);
      return;
   }

   wordvec pathvec = split(words[1], "/");
   string dirname = *(pathvec.end()-1);
   string fullpath = "";
   for (auto it = pathvec.begin(); it != pathvec.end()-1; ++it)
      fullpath += (*it + "/");
   inode_ptr res = resolvePath(fullpath,state.getCwd());
   if (res == nullptr) return;
   inode_ptr directory = res->getContents()->getNode(dirname);
   if (directory != nullptr && res != nullptr) //if filename exists and path exists
      //dont overwrite anything (ie file or directory)
      return;
   inode_ptr dir = res->getContents()->mkdir(dirname);
   dir->getContents()->setPath("..", res);
   dir->getContents()->setPath(".",res->getContents()->getNode(dirname));

   /*if (state.getCwd()->getContents()->getNode(filename) != nullptr)
      return; */
   /*
   inode_ptr ogcwd = state.getCwd();
   for (auto it = words.begin()+1; it != words.end(); ++it){
      auto newDir = state.getCwd()->getContents()->mkdir(*it);
      newDir->getContents()->setPath("..", ogcwd);
      newDir->getContents()->setPath(".", newDir);
   }
   */
}

void fn_pwd (inode_state& state, const wordvec& words){
   DEBUGF ('c', state);
   DEBUGF ('c', words);
   string pwd = state.getCwd()->getContents()->getPwd();
   if (pwd.length() == 2){
      cout << "/" << endl;
   } else {
      pwd = pwd.substr(2, pwd.length()-2);
      cout << pwd << endl;
   }
}

void DFS(string s, inode_state& state){
   wordvec newLs {"ls", s};
   fn_ls(state, newLs);
   auto dirList = state.getCwd()->getContents()->getAllDirs();
   if (dirList.size() == 0)
      return;
   map<string, int> disc;
   for (int i = 0; i < dirList.size(); i++){
      disc[dirList[i]] = 0;
   }
   for (auto it = disc.begin(); it != disc.end(); ++it){
      if (it->second == 0){
     	disc[it->first] = 1;
     	inode_ptr ogcwd = state.getCwd();
     	state.setCwd(state.getCwd()->getContents()->getNode(it->first));
     	DFS(it->first, state);
     	state.setCwd(ogcwd);
      }
 	}
}