Merged berbox.cpp with main sketch
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Alexander Junk
parent
3a1796123a
commit
173e464808
258
beerbox.cpp
258
beerbox.cpp
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "beerbox.h"
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#include <SPI.h>
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#include <SD.h>
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//Beware! Only valid inside the function it has been set in!
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char tmp_filename[FILE_NAME_LEN + FILE_EXTENSION_LEN + 2];
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Beerbox* read_beerbox(Beerbox *box){
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FILE *read = NULL;
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int num_read = 0;
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int index;
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char tmp[(DRINK_NAME_MAX_LENGTH + 1) * NUM_OF_DRINKS];
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int i = 0;
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read = SD.open("beerbox.config", FILE_READ);
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if(read == NULL){
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perror("error while reading!\n");
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printf("ABORT!\n\n");
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exit(-1);
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}
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for(i = 0 ; i < NUM_OF_DRINKS ; i++){
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read_line_from_file(read, tmp, sizeof(tmp));
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if(strlen(tmp)){
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sscanf(tmp, " drink number %d: %s",&index,box->drinks[i].name);
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read_line_from_file(read, tmp, sizeof(tmp));
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sscanf(tmp, " %*s %d ",&box->drinks[i].price);
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read_line_from_file(read, tmp, sizeof(tmp));
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sscanf(tmp, " %*s %d",&box->drinks[i].quantity);
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}else{
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strcpy(box->drinks[i].name, "slot empty");
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box->drinks[i].price = -1;
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box->drinks[i].quantity = -1;
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}
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}
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printf("%d drinks read!\n\n", i);
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for(i = 0; (i < NUM_OF_DRINKS)&&(box->drinks[i].price != -1); i++){
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printf("drink number %d: %s\nprice: %d\nquantity: %d\n\n",i+1,box->drinks[i].name,box->drinks[i].price,box->drinks[i].quantity);
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}
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if(i < NUM_OF_DRINKS)printf("Slots %d - %d are not in use!\n", i+1, NUM_OF_DRINKS);
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fclose(read);
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return box;
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}
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Person read_person(Beerbox *box, char *filename){
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Person aperson;
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FILE *read = NULL;
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int num_read = 0;
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int index;
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int tmp_int = 0;
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char tmp[(DRINK_NAME_MAX_LENGTH + 1) * NUM_OF_DRINKS];
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char tmp_drink_name[DRINK_NAME_MAX_LENGTH + 1];
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int i = 0;
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int j = 0;
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memset(tmp_filename, 0, sizeof(tmp_filename));
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strcat(tmp_filename, filename);
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strcat(tmp_filename, ".");
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strcat(tmp_filename, FILE_EXTENSION);
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read = fopen(tmp_filename, "r");
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if(read == NULL){
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perror("error while reading!\n");
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printf("ABORT!\n\n");
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exit(-1);
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}
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strcpy(aperson.file_name, filename);
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for(i = 0; i < NUM_OF_DRINKS; i++){
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aperson.drinks_taken[i] = -1;
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}
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read_line_from_file(read, tmp, sizeof(tmp));
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strcpy(aperson.name, tmp);
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read_line_from_file(read, tmp, sizeof(tmp));
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sscanf(tmp, " %*s %d", &aperson.rfid_uuid);
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read_line_from_file(read, tmp, sizeof(tmp));
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sscanf(tmp, " %*s %d", &aperson.finger_uuid);
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j = 0;
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while(read_line_from_file(read, tmp, sizeof(tmp)), strlen(tmp) > 0){
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i = 0;
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sscanf(tmp, " %*s %s", tmp_drink_name);
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for(i = 0;(i < NUM_OF_DRINKS)&&(strcmp(box->drinks[i].name, tmp_drink_name)); i++){
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//printf("It´s not drink No %d: %s\n", i+1, box->drinks[i].name );
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}
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if(i == NUM_OF_DRINKS){
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//Is it in?
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//printf("Drink \"%s\" does not exist in box!\n", tmp_drink_name);
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}else{
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read_line_from_file(read, tmp, sizeof(tmp));
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sscanf(tmp, " %*s %d", &aperson.drinks_taken[i]);
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//printf(">>Quantity: %d\n", aperson.drinks_taken[i].quantity);
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read_line_from_file(read, tmp, sizeof(tmp));
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//printf(">>Total: %d\n\n", aperson.drinks_taken[i].total);
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}
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}
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print_person(box, &aperson);
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update_pers_file(box, &aperson);
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fclose(read);
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return aperson;
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}
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void print_person(Beerbox *box, Person *aperson){
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int i = 0;
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memset(tmp_filename, 0, sizeof(tmp_filename));
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strcat(tmp_filename, aperson->file_name);
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strcat(tmp_filename, ".");
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strcat(tmp_filename, FILE_EXTENSION);
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printf("\nPerson is called \"%s\" and has the filename \"%s\".\n", aperson->name, tmp_filename);
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printf("rfid_uuid: %d\n", aperson->rfid_uuid);
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printf("finger_uuid: %d\n", aperson->finger_uuid);
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for(i = 0; i < NUM_OF_DRINKS; i++){
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if(aperson->drinks_taken[i] != -1){
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printf("\nDrink: %s\n", box->drinks[i].name);
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printf("Consumed: %d\n", aperson->drinks_taken[i]);
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printf("Total: %d.%02d Euro\n", aperson->drinks_taken[i]*box->drinks[i].price/100, (aperson->drinks_taken[i]*box->drinks[i].price)%100);
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}
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}
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}
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int update_pers_file(Beerbox *box, Person *aperson){
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FILE *write = NULL;
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char *tmp = NULL;
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//write = fopen()
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int i = 0;
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memset(tmp_filename, 0, sizeof(tmp_filename));
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strcat(tmp_filename, aperson->file_name);
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strcat(tmp_filename, ".");
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strcat(tmp_filename, FILE_EXTENSION);
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write = fopen(tmp_filename, "w");
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if(write == NULL){
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perror("error while reading!\n");
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printf("ABORT!\n\n");
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exit(-1);
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}
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fprintf(write, "%s\n", aperson->name);
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fprintf(write, "rfid_uuid: %d\n", aperson->rfid_uuid);
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fprintf(write, "finger_uuid: %d\n", aperson->finger_uuid);
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for(i = 0; i < NUM_OF_DRINKS; i++){
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if(aperson->drinks_taken[i] != -1){
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fprintf(write, "\nDrink: %s\n", box->drinks[i].name);
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fprintf(write, "Consumed: %d\n", aperson->drinks_taken[i]);
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fprintf(write, "Total: %d\n\n", aperson->drinks_taken[i]*box->drinks[i].price);
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}
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}
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fclose(write);
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return 0;
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}
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char* read_from_file_until(FILE *stream, char *str, int max_len, char until){
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int i = 0;
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int tmp_int = 0;
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memset(str, 0, max_len);
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for(i = 0; (tmp_int != until)&&(i < (max_len-1))&&(tmp_int != EOF); i++){
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tmp_int = fgetc(stream);
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//printf("%c", tmp_int);
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str[i] = tmp_int;
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}
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if(tmp_int == EOF){
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//May occur more often as the function tries to read a certain number of drinks.
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//printf("END OF FILE REACHED!\nABORT!!\n\n");
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str[0] = 0;
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return str;
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}
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if(str[0] != '\n')str[i-1] = 0;
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return str;
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}
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char *read_line_from_file(FILE *stream, char *str, int max_len){
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do{
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str = read_from_file_until(stream, str, max_len, '\n');
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}while((str[0] == '\n'));
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return str;
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}
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