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Diffstat (limited to '2023-2/L04/mitsuo/fun.cpp')
| -rw-r--r-- | 2023-2/L04/mitsuo/fun.cpp | 257 |
1 files changed, 257 insertions, 0 deletions
diff --git a/2023-2/L04/mitsuo/fun.cpp b/2023-2/L04/mitsuo/fun.cpp new file mode 100644 index 0000000..6e7ff38 --- /dev/null +++ b/2023-2/L04/mitsuo/fun.cpp @@ -0,0 +1,257 @@ +#include <iostream> +#include <fstream> +#include <iomanip> +#include <cstring> +#include <algorithm> +#include "fun.hpp" + +using namespace std; + +void cargaproductos(void *& productos) { + ifstream in("../Productos2.csv"); + if (!in) { + cerr << "Error: no se puedo abrir archivo\n"; + } + char code[MAXLEN]; + char desc[MAXLEN]; + double price; + char uses_credit; // S|N (yes or no) + + // "metodo exacto" + void * productos_tmp[MAX]; + + int i; + for (i = 0; true; i++) { + in.getline(code, MAXLEN, ','); + in.getline(desc, MAXLEN, ','); + in >> price; in.get(); + in >> uses_credit; in.get(); + if (!in) { + break; + } + void ** producto = new void * [4]; + // 0: code, 1: desc, 2: price, 3: uses_credit + producto[0] = new char [strlen(code) + 1]; strcpy((char *) producto[0], code); + producto[1] = new char [strlen(desc) + 1]; strcpy((char *) producto[1], desc); + producto[2] = new double {price}; + producto[3] = new char {uses_credit}; + productos_tmp[i] = producto; + } + productos_tmp[i++] = NULL; + int n = i; + productos = new void * [n]; + for (i = 0; i < n; i++) { + ((void **) productos)[i] = productos_tmp[i]; + } +} + +void imprimeproductos(void * productos) { + cout << "PRODUCTOS: \n"; + void ** ps = (void **) productos; + for (int i = 0; ps[i]; i++) { + void ** p = (void **) ps[i]; + cout << left; + cout << setw(12) << (char *) p[0]; + cout << setw(64) << (char *) p[1]; + cout << right << fixed << setprecision(2); + cout << setw(8) << * (double *) p[2]; + cout << setw(8) << * (char *) p[3]; + cout << '\n'; + } +} + +void cargaclientes(void *& clientes) { + ifstream in("../Clientes2.csv"); + if (!in) { + cerr << "Error: no se puedo abrir archivo\n"; + } + int dni; + char name[MAXLEN]; + char phonenumber[MAXLEN]; // not used + void * pedidos = NULL; + double credit; + + // "metodo exacto" + void * clientes_tmp[MAX]; + + int i; + for (i = 0; true; i++) { + in >> dni; in.get(); + in.getline(name, MAXLEN, ','); + in.getline(phonenumber, MAXLEN, ','); + in >> credit; in.get(); + if (!in) { + break; + } + void ** cliente = new void * [4]; + // 0: dni, 1: name, 2: pedidos, 3: credit + cliente[0] = new int {dni}; + cliente[1] = new char [strlen(name) + 1]; strcpy((char *) cliente[1], name); + cliente[2] = new void * {NULL}; + cliente[3] = new double {credit}; + clientes_tmp[i] = cliente; + } + clientes_tmp[i++] = NULL; + int n = i; + clientes = new void * [n]; + for (i = 0; i < n; i++) { + ((void **) clientes)[i] = clientes_tmp[i]; + } +} + +void imprimeclientes(void * clientes) { + cout << "CLIENTES: \n"; + void ** cs = (void **) clientes; + for (int i = 0; cs[i]; i++) { + void ** c = (void **) cs[i]; + cout << left; + cout << setw(12) << * (int *) c[0]; + cout << setw(64) << (char *) c[1]; + + // void ** pedidos = (void **) c[2]; + + cout << right << fixed << setprecision(2); + cout << setw(8) << * (double *) c[3]; + cout << '\n'; + } +} + +void cargapedidos(void *& productos, void * clientes) { + ifstream in("../Pedidos2.csv"); + if (!in) { + cerr << "Error: no se puedo abrir archivo\n"; + } + char code[MAXLEN]; // product code + int dni; + int qty; + + int i; + for (i = 0; true; i++) { + in.getline(code, MAXLEN, ','); + in >> dni; in.get(); + in >> qty; in.get(); + if (!in) { + break; + } + + // 1. Search the client + void ** c = busca_cliente(clientes, dni); + // 0: dni, 1: name, 2: pedidos, 3: credit + double & credit = * (double *) c[3]; + void *& pedidos = c[2]; + if (!pedidos) { + // "metodo exacto": first use a buffer of certain size, then trim it. + pedidos = new void * [MAX]; + ((void **) pedidos)[0] = NULL; + } + + // 2. Before adding the pedido, a check must be done + void ** p = busca_producto(productos, code); + // 0: code, 1: desc, 2: price, 3: uses_credit + double price = * (double *) p[2]; + char uses_credit = * (char *) p[3]; + double total_cost = qty * price; + if (uses_credit == 'S') { + if (credit < total_cost) { + // not enough credit + continue; + } + credit -= total_cost; + } + + void ** pedido = new void * [3]; + // 0: product code, 1: order qty, 2: total (qty * price) + pedido[0] = new char [strlen(code) + 1]; strcpy((char *) pedido[0], code); + pedido[1] = new int {qty}; + pedido[2] = new double {total_cost}; + agrega_pedido(pedidos, pedido); // appends pedido to the list + } + + // trim TODO + // for (i = 0; i < n; i++) { + // ((void **) clientes)[i] = clientes_tmp[i]; + // } +} + +void ** busca_cliente(void * clientes, int dni) { + void ** cs = (void **) clientes; + for (int i = 0; cs[i]; i++) { + void ** c = (void **) cs[i]; + int c_dni = * (int *) c[0]; + if (c_dni == dni) { + return c; + } + } + return NULL; +} + +void ** busca_producto(void * productos, char * code) { + void ** ps = (void **) productos; + for (int i = 0; ps[i]; i++) { + void ** p = (void **) ps[i]; + char * p_code = (char *) p[0]; + if (strcmp(p_code, code) == 0) { + return p; + } + } + return NULL; +} + +void agrega_pedido(void * pedidos, void * pedido) { + void ** peds = (void **) pedidos; + int i; + for (i = 0; i < MAX && peds[i]; i++) + ; + if (i == MAX) { + cerr << "ERROR: STACK OVERFLOW\n"; + } + peds[i++] = pedido; + peds[i] = NULL; +} + +void imprimereporte(void * clientes) { + ofstream out("ReporteDePedidos.txt"); + if (!out) { + cerr << "Error: no se pudo abrir archivo para reporte\n"; + } + void ** cs = (void **) clientes; + for (int i = 0; cs[i]; i++) { + void ** c = (void **) cs[i]; + // 0: dni, 1: name, 2: pedidos, 3: credit + int dni = * (int *) c[0]; + char * name = (char *) c[1]; + void ** pedidos = (void **) c[2]; + double credit = * (double *) c[3]; + out << + "===========================================================================================================\n" + "DNI Nombre Credito\n" + ; + out << left; + out << setw(12) << dni; + out << setw(64) << name; + out << right << fixed << setprecision(2); + out << setw(8) << credit; + out << '\n'; + + out << + "-----------------------------------------------------------------------------------------------------------\n" + "Pedidos atendidos:\n" + "-----------------------------------------------------------------------------------------------------------\n" + "Codigo Cantidad Total\n" + "-----------------------------------------------------------------------------------------------------------\n" + ; + for (int j = 0; pedidos[j]; j++) { + void ** pedido = (void **) pedidos[j]; + // 0: product code, 1: order qty, 2: total (qty * price) + char * code = (char *) pedido[0]; + int qty = * (int *) pedido[1]; + double total_cost = * (double *) pedido[2]; + + out << left; + out << setw(12) << code; + out << setw(12) << qty; + out << setw(12) << total_cost; + out << '\n'; + } + } +}
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