AnnotatedParseTree::shared_tree create_tree_from_string(const string& line) {
int depth = 0;
bool awaiting_num = false;
std::vector<char> current_word;
AnnotatedParseTree::shared_tree root = nullptr;
auto current_node = root;
stringstream ss(line);
char ch;
const char left_parenthesis = '(';
const char right_parenthesis = ')';
const char space = ' ';
while (ss) {
ch = ss.get();
if (awaiting_num) {
current_node->label = (uint)((int) (ch - '0'));
awaiting_num = false;
} else {
if (ch == left_parenthesis) {
if (++depth > 1) {
// replace current head node by this node:
current_node->children.emplace_back(make_shared<AnnotatedParseTree>(depth, current_node));
current_node = current_node->children.back();
root->add_general_child(current_node);
} else {
root = make_shared<AnnotatedParseTree>(depth);
current_node = root;
}
awaiting_num = true;
} else if (ch == right_parenthesis) {
// assign current word:
if (current_word.size() > 0) {
replace_char_by_char(current_word, '\xa0', space);
current_node->sentence = string(current_word.begin(), current_word.end());
current_node->udepth = 1;
// erase current word
current_word.clear();
}
// go up a level:
depth--;
if (current_node->has_parent) {
uint& current_node_udepth = current_node->udepth;
current_node = current_node->parent.lock();
current_node->udepth = std::max(current_node_udepth+1, current_node->udepth);
} else {
current_node = nullptr;
}
} else if (ch == space) {
// ignore spacing
continue;
} else {
// add to current read word
current_word.emplace_back(ch);
}
}
}
if (depth != 0)
throw std::invalid_argument("ParseError: Not an equal amount of closing and opening parentheses");
return root;
}
/////////////////////////////////////////////////////////////////////////////////////
/// read raw text from a string and create a initial DOM tree.
/// the paragraphs are separated by CR ("\r\n")
/////////////////////////////////////////////////////////////////////////////////////
int XML4NLP::CreateDOMFromString(const string & str) {
ClearDOM();
if (0 != BuildDOMFrame()) return -1;
string strTmp = str;
replace_char_by_char(strTmp, '\r', '\n');
// std::cout << strTmp << std::endl;
istringstream in(strTmp); // How to use istringstream?
int i = 0;
while (getline(in, strTmp)) {
clean_str(strTmp);
if (strTmp.empty()) {
continue;
}
if (0 != BuildParagraph(strTmp, i++)) {
return -1;
}
}
return 0;
}
