You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
342 lines
9.9 KiB
342 lines
9.9 KiB
#include "SQLiteCpp/Database.h" |
|
#include <SQLiteCpp/SQLiteCpp.h> |
|
#include <memory> |
|
#include "SQLiteCpp/Transaction.h" |
|
#include "bot.h" |
|
|
|
class SQLiteMarkov: public MarkovDB { |
|
protected: |
|
const std::string db_filename = get_filepath("markov.sqlite"); |
|
const int WORD_SIZE = 400; // chars |
|
const int MAX_REPLY_LENGTH = 500; // words |
|
int order = 2; |
|
|
|
const std::string TABLE_NAME = "markov"; |
|
|
|
const std::string INSERT_STATEMENT = get_insert_statement_string(); |
|
const std::string UPDATE_STATEMENT = get_update_statement_string(); const std::string QUERY_STATEMENT = get_select_statement_string(); |
|
|
|
std::shared_ptr<SQLite::Database> data; |
|
|
|
std::string get_filepath(std::string fp) { |
|
std::string filePath(__FILE__); |
|
return filePath.substr( 0, filePath.length() - std::string("bot.cpp").length()) |
|
+ fp; |
|
} |
|
|
|
|
|
std::unique_ptr<SQLite::Database> open_db() { |
|
try { |
|
return std::unique_ptr<SQLite::Database>(new |
|
SQLite::Database (db_filename, SQLite::OPEN_READWRITE)); |
|
} catch (std::exception& e) |
|
{ |
|
std::cout << "exception: " << e.what() << std::endl << std::flush; |
|
} |
|
|
|
std::cout << "Creating new db: '" << db_filename << "'" << std::endl; |
|
|
|
return std::unique_ptr<SQLite::Database>(new SQLite::Database |
|
(db_filename, SQLite::OPEN_CREATE|SQLite::OPEN_READWRITE)); |
|
} |
|
|
|
|
|
int Initialise_Data() { |
|
SQLite::Statement query(*data, "SELECT name from sqlite_master WHERE name = '" |
|
+ TABLE_NAME + "'"); |
|
|
|
try |
|
{ |
|
if (query.executeStep()) { |
|
std::cout << "database ready." << std::endl; |
|
return 0; |
|
} |
|
} |
|
catch (std::exception& e) |
|
{ |
|
std::cout << "exception: " << e.what() << std::endl; |
|
exit(1); |
|
} |
|
|
|
// create table sql statement construction |
|
std::string ins = "CREATE TABLE " + TABLE_NAME + " (\n"; |
|
for (int i = 0; i < order + 1; i ++) { |
|
ins += "word_" + std::to_string(i) + " VARCHAR(" + |
|
std::to_string(WORD_SIZE) + ") NOT NULL,\n"; |
|
} |
|
ins += "count INTEGER NOT NULL, \n PRIMARY KEY ("; |
|
for (int i = 0; i < order + 1; i ++) { |
|
ins += "word_" + std::to_string(i); |
|
if (i != order) { |
|
ins += ","; |
|
} |
|
} |
|
ins += " )\n);"; |
|
|
|
SQLite::Transaction transaction (*data); |
|
data->exec(ins); |
|
transaction.commit(); |
|
|
|
return 0; |
|
} |
|
|
|
std::string get_update_statement_string() { |
|
std::string update_template = "UPDATE " + TABLE_NAME + " SET count = ? WHERE\n"; |
|
|
|
for (int i = 0; i < order + 1; i++) { |
|
update_template += "word_" + std::to_string(i); |
|
update_template += " = ? "; |
|
if (i != order) { |
|
update_template += "AND "; |
|
} |
|
} |
|
|
|
return update_template; |
|
} |
|
|
|
std::string get_select_statement_string() { |
|
std::string update_template = "SELECT * FROM " + TABLE_NAME + " WHERE " ; |
|
|
|
for (int i = 0; i < order; i++) { |
|
update_template += "word_" + std::to_string(i); |
|
update_template += " = ? "; |
|
if (i != order - 1) { |
|
update_template += "AND "; |
|
} |
|
} |
|
|
|
update_template += ";"; |
|
|
|
return update_template; |
|
} |
|
|
|
std::string get_insert_statement_string() { |
|
std::string update_template = "INSERT INTO " + TABLE_NAME + |
|
" VALUES (" ; |
|
|
|
for (int i = 0; i < order + 1; i++) { |
|
update_template += "?" ; |
|
if (i != order) { |
|
update_template += ", "; |
|
} else { |
|
update_template += ", ?)"; |
|
} |
|
} |
|
return update_template; |
|
} |
|
|
|
bool update_count(std::vector<std::string> words, int count) { |
|
std::string update_template = UPDATE_STATEMENT; |
|
|
|
SQLite::Statement increment(*data, update_template); |
|
|
|
increment.bind(1, count); |
|
|
|
for (int i = 0; i < order + 1; i++) { |
|
increment.bind(i + 2, words[i]); |
|
} |
|
|
|
return increment.executeStep(); |
|
} |
|
|
|
bool insert_record(std::vector<std::string> words, int count) { |
|
|
|
std::string update_template = INSERT_STATEMENT; |
|
|
|
SQLite::Statement increment(*data, update_template); |
|
for (int i = 0; i < order + 1; i++) { |
|
increment.bind(i + 1, words[i]); |
|
} |
|
|
|
increment.bind(order + 2, count); |
|
|
|
return increment.executeStep(); |
|
} |
|
|
|
bool add_to_db(std::vector<std::string> words) { |
|
|
|
// UPDATE COMPANY SET ADDRESS = 'Texas' WHERE ID = 6; |
|
|
|
std::string query_template = "SELECT count FROM " + TABLE_NAME |
|
+ " WHERE "; |
|
|
|
for (int i = 0; i <= order; i++) { |
|
query_template += "word_" + std::to_string(i); |
|
query_template += " = ? "; |
|
if (i != order) { |
|
query_template += "AND "; |
|
} |
|
} |
|
|
|
SQLite::Statement update(*data, query_template); |
|
|
|
for (int i = 1; i < order + 2; i++) { |
|
update.bind(i, words[i-1]); |
|
} |
|
int count = 0; |
|
if (update.executeStep()) { |
|
count = update.getColumn(0); |
|
count += 1; |
|
update_count(words, count); |
|
} else { |
|
count = 1; |
|
insert_record(words, count); |
|
} |
|
|
|
return false; |
|
} |
|
|
|
std::string get_next_word(std::vector<std::string> words, int &score) { |
|
if (words.size() != order) { |
|
return ""; |
|
} |
|
|
|
SQLite::Statement query(*data, QUERY_STATEMENT); |
|
|
|
for (int i = 0; i < order; i++) { |
|
query.bind(i+1, words[i]); |
|
} |
|
|
|
int total = 0; |
|
while (query.executeStep()) { |
|
int count = query.getColumn(order + 1); |
|
total += count; |
|
} |
|
|
|
total += 1; |
|
int threshold = rand() % total; |
|
|
|
// count up to threshold |
|
// pretty sure the order doesn't matter statistically? |
|
// Obviously it will have an impact but I think the distribution should |
|
// be the same whether the list is ordered by frequency or not |
|
|
|
query.reset(); |
|
total = 0; |
|
|
|
std::vector<std::string> message; |
|
|
|
while (query.executeStep()) { |
|
int count = query.getColumn(order + 1); |
|
total += count; |
|
if (total >= threshold) { |
|
std::string next_word = query.getColumn(order); |
|
|
|
score = total; |
|
return next_word; |
|
} |
|
} |
|
|
|
std::cout << "No matches found" << std::endl; |
|
return ""; |
|
} |
|
|
|
std::string get_next_word(std::vector<std::string> words) { |
|
int count; |
|
return get_next_word(words, count); |
|
} |
|
|
|
public: |
|
SQLiteMarkov(int ord, std::string dbname, std::string table): |
|
order(ord), |
|
db_filename(dbname), |
|
data(open_db()), |
|
TABLE_NAME(table) |
|
{ |
|
Initialise_Data(); |
|
} |
|
|
|
SQLiteMarkov(int ord): order(ord), data(open_db()) |
|
{ |
|
Initialise_Data(); |
|
} |
|
|
|
SQLiteMarkov(): data(open_db()) |
|
{ |
|
Initialise_Data();} |
|
|
|
SQLiteMarkov(int order, std::string table_name, SQLite::Database *db): |
|
data(db), order(order), TABLE_NAME(table_name) |
|
{ |
|
Initialise_Data(); |
|
} |
|
|
|
virtual ~SQLiteMarkov() {}; |
|
|
|
bool add_ngrams(std::vector<std::string> words) override { |
|
|
|
// assertions? |
|
if (words.size() > order + 1) { |
|
return true; |
|
} |
|
|
|
for (int i = 0; i < order + 1; i++) { |
|
if (words[i].length() > SQLiteMarkov::WORD_SIZE) { |
|
return true; |
|
} |
|
} |
|
|
|
return add_to_db(words); |
|
} |
|
|
|
bool batch_add_ngrams(std::vector<std::vector<std::string>> batch) |
|
override { |
|
|
|
SQLite::Transaction transaction(*data); |
|
|
|
for (auto ngram: batch) { |
|
add_ngrams(ngram); |
|
} |
|
|
|
transaction.commit(); |
|
|
|
return 0; |
|
} |
|
|
|
std::string get_continuation(std::vector<std::string> prompt, int &score) |
|
override { |
|
std::stringstream ss; |
|
for (int i=0; i < prompt.size(); i++) { |
|
ss << " " << prompt[i]; |
|
} |
|
|
|
std::string new_words = ss.str(); |
|
std::vector<std::string> words(prompt); |
|
|
|
int count = 0; |
|
score = 0; |
|
|
|
do { |
|
std::string next_word = "throwaway"; |
|
|
|
try { |
|
int total; |
|
next_word = get_next_word(words, total); |
|
score += total; |
|
} catch (char * &e) { |
|
std::cout << "Exception: " << e << std::endl; |
|
std::cout << "Failed Get Next Word" << std::endl; |
|
break; |
|
} |
|
|
|
new_words += " " + next_word; |
|
std::regex end_punc("[\\.\\?\\!]"); |
|
|
|
if (next_word.size() == 0 |
|
|| std::regex_search(std::to_string(next_word.back()), |
|
end_punc)) { |
|
break; |
|
} |
|
|
|
count++; |
|
words.push_back(next_word); |
|
words.erase(words.begin()); |
|
|
|
} while (count < MAX_REPLY_LENGTH); |
|
|
|
if (count > 0) |
|
return new_words; |
|
else |
|
return ""; |
|
} |
|
};
|
|
|