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Parser.h
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/**
* @Author(s): Pravin and Kassi
* @filename: Parser.h
* @date: 04-05-2022
* @description: This class is the parser of the project
* It is responsible for:
* - reading and processing JSON files asynchronously
* - Storing processed JSON file (Article) into std::deque
*/
#ifndef INC_22S_FINAL_PROJ_PARSER_H
#define INC_22S_FINAL_PROJ_PARSER_H
#include <filesystem>
#include <fstream>
#include <iostream>
#include <thread>
#include <future>
#include <vector>
#include <exception>
#include <string>
#include <sstream>
#include <algorithm>
#include <unordered_set>
#include <set>
#include "HashMap.h"
#include "Article.h"
#include "rapidjson/document.h"
#include "thread_pool.h"
#include "porter2_stemmer.h"
#include "AvlTree.h"
//stop word list borrowed from: https://www.webconfs.com/stop-words.php
static std::unordered_set<std::string> stop_words = {
"a", "able", "about", "above", "abroad", "according", "accordingly",
"across", "actually",
"adj", "after", "afterwards", "again", "against", "ago", "ahead",
"ain't", "all", "allow",
"allows", "almost", "alone", "along", "alongside", "already",
"also", "although", "always",
"am", "amid", "amidst", "among", "amongst", "an", "and", "another",
"any", "anybody", "anyhow",
"anyone", "anything", "anyway", "anyways", "anywhere", "apart",
"appear", "appreciate",
"appropriate", "are", "aren't", "around", "as", "a's", "aside",
"ask", "asking", "associated",
"at", "available", "away", "awfully", "back", "backward",
"backwards", "be", "became",
"because", "become", "becomes", "becoming", "been", "before",
"beforehand", "begin", "behind",
"being", "believe", "below", "beside", "besides", "best", "better",
"between", "beyond", "both",
"brief", "but", "by", "came", "can", "cannot", "cant", "can't",
"caption", "cause", "causes",
"certain", "certainly", "changes", "clearly", "c'mon", "co", "co.",
"com", "come", "comes",
"concerning", "consequently", "consider", "considering", "contain",
"containing", "contains",
"corresponding", "could", "couldn't", "course", "c's", "currently",
"dare", "daren't",
"definitely", "described", "despite", "did", "didn't", "different",
"directly", "do", "does",
"doesn't", "doing", "done", "don't", "down", "downwards", "during",
"each", "edu", "eg",
"eight", "eighty", "either", "else", "elsewhere", "end", "ending",
"enough", "entirely",
"especially", "et", "etc", "even", "ever", "evermore", "every",
"everybody", "everyone",
"everything", "everywhere", "ex", "exactly", "example", "except",
"fairly", "far", "farther",
"few", "fewer", "fifth", "first", "five", "followed", "following",
"follows", "for", "forever",
"former", "formerly", "forth", "forward", "found", "four", "from",
"further", "furthermore",
"get", "gets", "getting", "given", "gives", "go", "goes", "going",
"gone", "got", "gotten",
"greetings", "had", "hadn't", "half", "happens", "hardly", "has",
"hasn't", "have", "haven't",
"having", "he", "he'd", "he'll", "hello", "help", "hence", "her",
"here", "hereafter", "hereby",
"herein", "here's", "hereupon", "hers", "herself", "he's", "hi",
"him", "himself", "his",
"hither", "hopefully", "how", "howbeit", "however", "hundred",
"i'd", "ie", "if", "ignored",
"i'll", "i'm", "immediate", "in", "inasmuch", "inc", "inc.",
"indeed", "indicate", "indicated",
"indicates", "inner", "inside", "insofar", "instead", "into",
"inward", "is", "isn't", "it",
"it'd", "it'll", "its", "it's", "itself", "i've", "just", "k",
"keep", "keeps", "kept", "know",
"known", "knows", "last", "lately", "later", "latter", "latterly",
"least", "less", "lest",
"let", "let's", "like", "liked", "likely", "likewise", "little",
"look", "looking", "looks",
"low", "lower", "ltd", "made", "mainly", "make", "makes", "many",
"may", "maybe", "mayn't",
"me", "mean", "meantime", "meanwhile", "merely", "might",
"mightn't", "mine", "minus", "miss",
"more", "moreover", "most", "mostly", "mr", "mrs", "much", "must",
"mustn't", "my", "myself",
"name", "namely", "nd", "near", "nearly", "necessary", "need",
"needn't", "needs", "neither",
"never", "neverf", "neverless", "nevertheless", "new", "next",
"nine", "ninety", "no", "nobody",
"non", "none", "nonetheless", "noone", "no-one", "nor", "normally",
"not", "nothing",
"notwithstanding", "novel", "now", "nowhere", "obviously", "of",
"off", "often", "oh", "ok",
"okay", "old", "on", "once", "one", "ones", "one's", "only",
"onto", "opposite", "or", "other",
"others", "otherwise", "ought", "oughtn't", "our", "ours",
"ourselves", "out", "outside",
"over", "overall", "own", "particular", "particularly", "past",
"per", "perhaps", "placed",
"please", "plus", "possible", "presumably", "probably", "provided",
"provides", "que", "quite",
"qv", "rather", "rd", "re", "really", "reasonably", "recent",
"recently", "regarding",
"regardless", "regards", "relatively", "respectively", "right",
"round", "said", "same", "saw",
"say", "saying", "says", "second", "secondly", "see", "seeing",
"seem", "seemed", "seeming",
"seems", "seen", "self", "selves", "sensible", "sent", "serious",
"seriously", "seven",
"several", "shall", "shan't", "she", "she'd", "she'll", "she's",
"should", "shouldn't",
"since", "six", "so", "some", "somebody", "someday", "somehow",
"someone", "something",
"sometime", "sometimes", "somewhat", "somewhere", "soon", "sorry",
"specified", "specify",
"specifying", "still", "sub", "such", "sup", "sure", "take",
"taken", "taking", "tell", "tends",
"th", "than", "thank", "thanks", "thanx", "that", "that'll",
"thats", "that's", "that've",
"the", "their", "theirs", "them", "themselves", "then", "thence",
"there", "thereafter",
"thereby", "there'd", "therefore", "therein", "there'll",
"there're", "theres", "there's",
"thereupon", "there've", "these", "they", "they'd", "they'll",
"they're", "they've", "thing",
"things", "think", "third", "thirty", "this", "thorough",
"thoroughly", "those", "though",
"three", "through", "throughout", "thru", "thus", "till", "to",
"together", "too", "took",
"toward", "towards", "tried", "tries", "truly", "try", "trying",
"t's", "twice", "two", "un",
"under", "underneath", "undoing", "unfortunately", "unless",
"unlike", "unlikely", "until",
"unto", "up", "upon", "upwards", "us", "use", "used", "useful",
"uses", "using", "usually",
"v", "value", "various", "versus", "very", "via", "viz", "vs",
"want", "wants", "was",
"wasn't", "way", "we", "we'd", "welcome", "well", "we'll", "went",
"were", "we're", "weren't",
"we've", "what", "whatever", "what'll", "what's", "what've",
"when", "whence", "whenever",
"where", "whereafter", "whereas", "whereby", "wherein", "where's",
"whereupon", "wherever",
"whether", "which", "whichever", "while", "whilst", "whither",
"who", "who'd", "whoever",
"whole", "who'll", "whom", "whomever", "who's", "whose", "why",
"will", "willing", "wish",
"with", "within", "without", "wonder", "won't", "would",
"wouldn't", "yes", "yet", "you",
"you'd", "you'll", "your", "you're", "yours", "yourself",
"yourselves", "you've", "zero"
};
class Parser {
private:
/// \description Parser::parse will move futures of AVL trees into this vector
std::vector<std::future<Article *>> future_queue;
ThreadPool thread_pool;
/// \param json_file -> Path to JSON file within the filesystem
/// \return AVL tree -> A small AVL tree :)
/// \description -> Reads, parses, extracts, and process data (persons, organizations,
/// text) from raw JSON file and populate a small AVL tree
Article *parse_json(const std::filesystem::directory_entry &json_file);
public:
///
/// \param root_folder_path -> Path the kaggle folder (data set folder)
/// \description -> asynchronously call "parse_folder" on EACH folder within
/// "root_folder_path" and store "Future" variables within the Parser::future_queue
void parse(const std::filesystem::path &root_folder_path);
std::set<std::string> k1, k2;
/// \return set of AVL trees -> AVL trees returns by each threads
/// \description -> "Move all variables from Parser::future_queue into the Parser::articles,
/// where they can be accessed. Optimally, this should only be called once and
/// should be called before accessing Parser::articles
AvlTree<std::string, Article *> build_AVL_tree();
HashMap<std::string, std::set<Article*>> orgs_map, person_map;
};
#endif //INC_22S_FINAL_PROJ_PARSER_H