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#include "Table.h"
#include "CellDouble.h"
#include "CellInt.h"
#include "CellString.h"
#include "CellFormula.h"
#include <cstring>
#include <fstream>
#include <exception>
#include <stdexcept>
#include <iostream> // TODO: remove
// Rough implementation of the grammar
//
// S -> W"=A"S | W"A"S | WPDS | WPD.DS | epsilon
// A -> Aa | Ab | ... | AZ | A0 | A1 | ... | A* | ... | a | b | ... | epsilon
// D -> D0 | D1 | ... | D9 | 0 | 1 | ... | 9
// P -> + | - | epsilon
// W -> W | epsilon
//
// over the input file stream
void W(std::ifstream& in) {
while (in.peek() == ' ') in.get();
}
void P(std::ifstream& in, List<char>& buffer) {
if (in.peek() == '-' || in.peek() == '+')
buffer.add(in.get());
}
void D(std::ifstream& in, List<char>& buffer) {
while (in.peek() >= '0' && in.peek() <= '9')
buffer.add(in.get());
}
void A(std::ifstream& in, List<char>& buffer) {
while ((in.peek() >= ' ' && in.peek() <= '~') && in.peek() != '"')
buffer.add(in.get());
}
void throwException(std::ifstream& inFile, unsigned row) {
row++;
throw std::logic_error((
(((((String("Error: Invalid character '") += (char)inFile.peek())
+= "' at row ") += row) += "\" and column ") += ((int)inFile.tellg() / row + 1))
).get_cstr());
}
void Table::readFromFile(std::ifstream& inFile) {
unsigned row = 0;
cells.add(List<Cell*>());
while (inFile.peek() != EOF) {
if (inFile.peek() == '\n') {
row++;
inFile.get();
cells.add(List<Cell*>());
continue;
}
List<char> buffer;
W(inFile);
if (inFile.peek() == '"') {
inFile.get();
A(inFile, buffer);
buffer.add('\0');
if (inFile.peek() != '"') throwException(inFile, row);
inFile.get();
W(inFile);
if (inFile.peek() != ',') throwException(inFile, row);
inFile.get();
cells[row].add((buffer[0] == '=')
? (Cell*)new CellFormula(buffer.raw_data(), &cells)
: (Cell*)new CellString(buffer.raw_data()));
}
else if (inFile.peek() == ',') {
inFile.get();
cells[row].add((Cell*)new CellString(""));
}
else {
P(inFile, buffer);
D(inFile, buffer);
if (inFile.peek() == '.') {
buffer.add(inFile.get());
D(inFile, buffer);
buffer.add('\0');
W(inFile);
if (inFile.peek() != ',') throwException(inFile, row);
inFile.get();
cells[row].add((Cell*)new CellDouble(buffer.raw_data()));
}
else {
buffer.add('\0');
W(inFile);
if (inFile.peek() != ',') throwException(inFile, row);
inFile.get();
cells[row].add((Cell*)new CellInt(buffer.raw_data()));
}
}
}
}
#include <iostream>
Table::Table(const char* filePath) {
std::ifstream inFile(filePath);
if (!inFile.is_open())
throw std::logic_error("Could not open file!");
cells = List<List<Cell*>>();
readFromFile(inFile);
inFile.close();
}
Table::~Table() {
for (unsigned i = 0; i < cells.get_length(); i++) {
for (unsigned j = 0; j < cells.get_length(); j++) {
delete cells[i][j];
}
}
}
unsigned Table::get_rows() const {
return cells.get_count();
}
unsigned Table::get_cols() const {
return cells[0].get_length();
}
#define abs(a) ((a < 0) ? -a : a)
#define FLOATING_POINT_PRECISION 0.0001f
void Table::putCell(unsigned row, unsigned col, const char* rawValue) {
Cell* newCell;
while (*rawValue == ' ') rawValue++;
if (*rawValue == '"') {
rawValue++;
newCell = (*rawValue == '=')
? (Cell*)new CellFormula(rawValue, &cells)
: (Cell*)new CellString(rawValue);
}
else if ((*rawValue == '+' || *rawValue == '-') || (*rawValue >= '0' && *rawValue <= '9')) {
double doubleParse = atof(rawValue);
unsigned intPart = abs(doubleParse);
newCell = (abs(doubleParse) - intPart > FLOATING_POINT_PRECISION)
? (Cell*)new CellDouble(doubleParse)
: (Cell*)new CellInt(intPart);
}
else
throw std::logic_error("Error: Could not determine data type.");
if (cells[row][col] != nullptr)
delete cells[row][col];
cells[row][col] = newCell;
}
List<String> Table::getAllCells() const {
List<String> toRet;
for (unsigned i = 0; i < cells.get_count(); i++) {
for (unsigned j = 0; j < cells[i].get_count(); j++) {
std::cout << i << ' ' << j << std::endl;
toRet.add(cells[i][j]->getValueForPrint());
}
}
return toRet;
}
void Table::saveToFile(const char* filePath) const {
std::ofstream outFile(filePath);
if (!outFile.is_open())
throw std::logic_error("Could not open file!");
for (unsigned i = 0; i < cells.get_count(); i++) {
for (unsigned j = 0; j < cells.get_count(); j++) {
if (cells[i][j] != nullptr)
cells[i][j]->writeToFile(outFile);
outFile << ',';
}
outFile << '\n';
}
outFile.close();
}
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