git.sur5r.net Git - c128-kasse/blob - src/credit_manager.c

   1 /*
   2  * RGB2R-C128-Kassenprogramm
   3  * (c) 2007 phil_fry, sECuRE, sur5r
   4  * See LICENSE for license information
   5  *
   6  */
   7 #include <conio.h>
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11
  12 #include "config.h"
  13 #include "general.h"
  14
  15 static char *filter = NULL;
  16 static BYTE filter_len;
  17
  18 static BYTE current_credits_page = 0;
  19
  20 static void credit_print_screen() {
  21         BYTE i, pages;
  22         char buffer[10];
  23
  24         clrscr();
  25         cprintf("itemz (phil_fry, sECuRE, sur5r)\r\n\r\n");
  26         /* 16 entries per page */
  27         pages = (credits.num_items / 16);
  28         if (current_credits_page > pages)
  29                 current_credits_page = pages;
  30         cprintf("Datei: CREDITS (Seite %d von %d)\r\n\r\n", current_credits_page, pages);
  31         for (i = (current_credits_page * 16); i < credits.num_items && i < ((current_credits_page+1) * 16); i++) {
  32                 if (filter == NULL || strncmp(credits.credits[i].nickname, filter, filter_len) == 0) {
  33                         if (format_euro(buffer, 10, credits.credits[i].credit) != buffer) {
  34                                 cprintf("Error: Could not format credit %d\r\n", credits.credits[i].credit);
  35                                 exit(1);
  36                         }
  37
  38                         cprintf("%d: %s: %s\r\n", i, credits.credits[i].nickname, buffer);
  39                 }
  40         }
  41         cprintf("\r\nn) Neu d) Loeschen p) Einzahlen b) Seite hoch f) Seite runter\r\ng) Filtern e) Aendern s) Speichern z) Zurueck\r\n");
  42 }
  43
  44 struct credits_t *find_credit(char *name){
  45         int i;
  46         for (i = 0; i < credits.num_items; i++)
  47                 if (strncmp(name, credits.credits[i].nickname, 11) == 0)
  48                         return &credits.credits[i];
  49         return NULL;
  50 }
  51
  52 /*
  53  * when depositing money with this and returning to the main menu, the program
  54  * will crash with a message like the following:
  55  *
  56  */
  57 static void deposit_credit() {
  58         char *input;
  59         struct credits_t *credit;
  60         unsigned int deposit;
  61
  62         cprintf("\r\nName:\r\n");
  63         if ((input = get_input()) == NULL || *input == '\0')
  64                 return; // no name given
  65
  66         if ((credit = find_credit(input)) == NULL)
  67                 return; // cannot find named credit
  68
  69         cprintf("\r\nEinzahlung in Cent:\r\n");
  70         if ((input = get_input()) == NULL || *input == '\0' || (deposit = atoi(input)) == 0)
  71                 return;
  72
  73         credit->credit += deposit;
  74
  75         toggle_videomode();
  76         cprintf("%d Cent eingezahlt fuer %s.\r\nRestguthaben: %d\r\n", deposit, credit->nickname, credit->credit);
  77         toggle_videomode();
  78         cprintf("\r\nEinzahlung durchgefuehrt, drucke RETURN...\r\n");
  79         input = get_input();
  80         toggle_videomode();
  81         clrscr();
  82         toggle_videomode();
  83 }
  84
  85 static void new_credit() {
  86         char *input, *name;
  87         int credit;
  88
  89         if (credits.num_items == 75) {
  90                 cprintf("\rEs ist bereits die maximale Anzahl an Eintraegen erreicht, druecke RETURN...\r\n");
  91                 input = get_input();
  92                 return;
  93         }
  94
  95         cprintf("\rNickname:\r\n");
  96         if ((input = get_input()) == NULL || *input == '\0')
  97                 return;
  98         name = strdup(input);
  99         cprintf("\r\nGuthaben in Cents:\r\n");
 100         if ((input = get_input()) == NULL || *input == '\0' || (credit = atoi(input)) == 0)
 101                 return;
 102         strcpy(credits.credits[credits.num_items].nickname, name);
 103         credits.credits[credits.num_items].credit = credit;
 104         credits.num_items++;
 105         free(name);
 106 }
 107
 108 static void _delete_credit(BYTE num) {
 109         memset(credits.credits[num].nickname, '\0', 11);
 110         credits.credits[num].credit = 0;
 111 }
 112
 113 static void delete_credit() {
 114         char *input;
 115         BYTE num, last;
 116
 117         cprintf("\r Welcher Eintrag soll geloescht werden?\r\n");
 118         if ((input = get_input()) == NULL || *input == '\0')
 119                 return;
 120         num = atoi(input);
 121         if (credits.num_items > 1) {
 122                 /* Swap last item with this one and delete the last one to avoid holes */
 123                 last = (credits.num_items - 1);
 124                 strcpy(credits.credits[num].nickname, credits.credits[last].nickname);
 125                 credits.credits[num].credit = credits.credits[last].credit;
 126                 _delete_credit(last);
 127         } else {
 128                 /* Just delete it */
 129                 _delete_credit(num);
 130         }
 131         credits.num_items--;
 132 }
 133
 134 void credit_manager(){
 135         char *c;
 136         while(1){
 137                 credit_print_screen();
 138                 c = get_input();
 139                 switch (*c) {
 140                         case 'n':
 141                                 new_credit(); break;
 142                         case 'd':
 143                                 delete_credit(); break;
 144                         case 's':
 145                                 save_credits(); break;
 146                         case 'f':
 147                                 if (current_credits_page < (credits.num_items / 16))
 148                                                 current_credits_page++;
 149                                 break;
 150                         case 'b':
 151                                 if (current_credits_page > 0)
 152                                         current_credits_page--;
 153                                 break;
 154                         case 'p':
 155                                 deposit_credit(); break;
 156                         case 'g':
 157                                 cprintf("Filter eingeben:\r\n");
 158                                 filter = get_input();
 159                                 if (filter == NULL || *filter == 32 || (filter_len = strlen(filter)) == 0)
 160                                         filter = NULL;
 161                                 break;
 162                         case 'z':
 163                                 return;
 164                         default:
 165                                 cprintf("Unbekannter Befehl, druecke RETURN...\r\n");
 166                                 get_input();
 167                 }
 168         }
 169 }