Itemio: Items can be loaded from the data file

Signed-off-by: Cestmir Houska <czestmyr@gmail.com>

itemio.c

@@ -1,14 +1,61 @@
 #include <stdio.h>
+#include <string.h>
 #include "itemio.h"
 
 struct item items[ITEM_MAXNUM];
+int items_count;
 
 void fill_items()
 {
-    char buf[128];
+    //Add 32 characters for a safe margin
+    #define BUFSIZE EAN_MAXLEN + NAME_MAXLEN + 32
+    char buf[BUFSIZE];
     FILE *f = fopen("items.txt", "r");
-    while (fgets(buf, 128, f)) {
-        printf("%s\n", buf);
+    char c;
+
+    items_count = 0;
+
+    while (fgets(buf, BUFSIZE, f)) {
+        int i = 0;
+        int begin = 0;
+
+        //Initialize the item
+        items[items_count].ean[0] = 0;
+        items[items_count].name[0] = 0;
+        items[items_count].price = 0;
+
+        //Read the item EAN
+        while (i < BUFSIZE) {
+            if (buf[i] == '\t') {
+                buf[i] = 0;
+                strcpy(items[items_count].ean, &buf[begin]);
+                buf[i] = '\t';
+                begin = i+1;
+                break;
+            }
+            i++;
+        }
+
+        //Read the item name
+        i = begin;
+        while (i < BUFSIZE) {
+            if (buf[i] == '\t') {
+                buf[i] = 0;
+                strcpy(items[items_count].name, &buf[begin]);
+                buf[i] = '\t';
+                begin = i+1;
+                break;
+            }
+            i++;
+        }
+
+        //Use scanf to read the item price
+        i = begin;
+        if (i < BUFSIZE) {
+            sscanf(&buf[i], "%d", &items[items_count].price);
+        }
+
+        items_count++;
     }
     fclose(f);
 }

itemio.h

@@ -9,6 +9,8 @@ struct item {
     int price;
 };
 
+extern int items_count;
+
 extern struct item items[ITEM_MAXNUM];
 
 extern void fill_items();