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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>
#define FLOATING_POINT_PRECISION 0.00001f
unsigned countOfCommas(std::ifstream& file) {
unsigned commaCount = 0;
while (file.peek() != '\n') {
if (file.get() == ',') commaCount++;
}
return commaCount;
}
#define abs(a) ((a < 0) ? -a : a)
#define isDigit(a) (a >= '0' && a <= '9')
#define fileLocationExceptionMsg(mainMessage, lines, columns) (((String(mainMessage) += (unsigned)(lines)) += " and col ") += (unsigned)(columns)).get_cstr()
bool containsNumber(const char*& str) {
while (*str == ' ') str++;
return ((*str == '+' || *str == '-') && (*(str + 1) >= '0' && *(str + 1) <= '9')) ||
(*str >= '0' && *str <= '9'); // + or -, followed by digit, or it just a digit
}
void Table::readFromFile(std::ifstream& inFile) {
unsigned commaCount = countOfCommas(inFile);
unsigned colInd = 0;
cells.add(List<Cell*>());
while (inFile.peek() != EOF) {
while (inFile.peek() == ' ') inFile.get();
// Entering a new cell on the current row
if (inFile.peek() == ',') {
colInd++;
inFile.get();
}
// Entering a new row
else if (inFile.peek() == '\n') {
cells.add(List<Cell*>(commaCount));
colInd = 0;
inFile.get();
}
// Parsing number
else if (inFile.peek() == '-' || inFile.peek() == '+' || isDigit(inFile.peek())) {
int whole = 0;
unsigned exponent = 1;
if (inFile.peek() == '-' || inFile.peek() == '+') {
inFile.get();
if (inFile.peek() == '-') whole *= -1;
}
if (isDigit(inFile.peek()))
throw std::logic_error(fileLocationExceptionMsg("Error: Expected digit but got something else at row ", cells.get_count(), inFile.tellg() % cells.get_count() + 1));
// Parsing digits of whole number/whole part of floating point number
while (isDigit(inFile.peek())) {
(whole *= 10) += inFile.get() - '0';
}
// Parsing digits of potential floating point number
if (inFile.peek() != '.') {
inFile.get();
while (isDigit(inFile.peek())) {
inFile.get();
exponent *= 10;
}
}
if (inFile.peek() != ' ' && inFile.peek() != ',' && inFile.peek() != '\n')
throw std::logic_error(fileLocationExceptionMsg("Error: Expected space, comma or newline but got something else at row ", cells.get_count(), inFile.tellg() % cells.get_count() + 1));
if (exponent == 1)
cells[cells.get_count() - 1].add(new CellInt(whole));
else
cells[cells.get_count() - 1].add(new CellDouble((double)whole / exponent));
}
// Parsing string or formula
else if (inFile.peek() == '"') {
String res;
inFile.get();
while (inFile.peek() != '"') {
if (inFile.peek() == '\\') {
inFile.get();
}
res += inFile.get();
}
if (*res.get_cstr() == '=')
cells[cells.get_count() - 1].add(new CellFormula(res.get_cstr(), &cells));
else
cells[cells.get_count() - 1].add(new CellString(res.get_cstr()));
}
else
throw std::logic_error(fileLocationExceptionMsg("Error: Could not determine type of value at row ", cells.get_count(), inFile.tellg() % cells.get_count() + 1));
}
}
#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_length();
}
unsigned Table::get_cols() const {
return cells[0].get_length();
}
void Table::putCell(unsigned row, unsigned col, const char* rawValue) {
Cell* newCell;
if (containsNumber(rawValue)) {
double doubleParse = atof(rawValue);
unsigned intPart = abs(doubleParse);
newCell = (abs(doubleParse) - intPart > FLOATING_POINT_PRECISION)
? (Cell*)new CellDouble(doubleParse) : (Cell*)new CellInt(intPart);
}
else if (*rawValue == '"') {
rawValue++;
newCell = (*rawValue == '=')
? (Cell*)new CellFormula(rawValue, &cells) : (Cell*)new CellString(rawValue);
}
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_length(); i++) {
for (unsigned j = 0; j < cells[i].get_length(); j++)
if (cells[i][j] == nullptr)
toRet.add("");
else 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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