kausality · October 18, 2011 18:00 · Oct 18, 2011
diff --git a/str2bf b/str2bf
@@ -0,0 +1,131 @@
+/*A stupid str2bf converter!*/
+
+
+#include <stdio.h>
+#define MAX 100
+int win=10;
+char cell[MAX]={0};
+int curr=0;
+
+/*Find a number as a multiple of ten */
+void divmod(int num,int *div,int *mod)
+{
+    *div=num/10;
+    *mod=num%10;
+}
+
+/*Finds a cell closer then 10 cells away which has a value near to the value which you have to print*/
+int find_closest(int *val,int *pos,char c)
+{
+    int i,flag=0;
+    for(i=curr-10;i<curr+10;i++){
+        if(cell[i]-c<=10 && cell[i]-c>=-10){
+            *val=cell[i]-c;
+            *pos=i;
+            flag=1;
+            break;
+        }
+    }
+
+    if(!flag)
+        return 0;
+
+    return 1;
+}
+
+/*Moves to an empty cell*/
+void on_empty_cell()
+{
+    while(cell[curr]){
+        putchar('>');
+        curr++;
+    }
+
+}
+
+
+void bf_gen(char c)
+{
+    int div,mod;
+    int s,i,tmp;
+    int seek,seek_ptr,pos,val;
+    int win_cell;
+    char t,mutate;
+    divmod(c,&div,&mod);
+
+/*Suppose you have to print 'b' and the value of just the previous cell is 'a' then you
+ *don't need to reduntatly generate a loop for it all you have to do is:-
+ *<+. and BANG!
+ *This is what this piece of code does
+*/
+    if(find_closest(&val,&pos,c)){
+        seek=(curr<pos)?pos-curr:curr-pos;
+
+        seek_ptr=(curr<pos)?'>':'<';
+        curr=pos;
+        for(i=0;i<seek;i++)
+            putchar(seek_ptr);
+
+        mutate=(val<0)?'+':'-';
+        val=(val<0)?-val:val;
+
+        for(i=0;i<val;i++){
+            putchar(mutate);
+            if(mutate=='-')cell[curr]--;
+            else cell[curr]++;
+        }
+
+    }
+/*This block generate a loop,if the character has value 65,then it will div mod by 10 to get 6 & 5
+ * now simply we can generate a loop like
+ * ++++++++++[>++++++<-]>. BANG!
+ * Now that is what this long block do!
+*/
+    else{
+        on_empty_cell();
+        win_cell=curr;
+        for(i=0;i<win;i++){
+            putchar('+');cell[curr]++;
+        }
+        s=tmp=curr;
+        putchar('[');
+        on_empty_cell();
+
+        for(i=0;i<div;i++)
+            putchar('+');
+        for(i=0;i<win*div+mod;i++)
+            cell[curr]++;
+
+        tmp=s;
+        for(;tmp<curr;tmp++)
+            putchar('<');
+
+        putchar('-');cell[win_cell]--;
+        putchar(']');
+        tmp=s;
+        for(;tmp<curr;tmp++)
+            putchar('>');
+
+        for(i=0;i<mod;i++)
+            putchar('+');
+
+    }
+
+    putchar('.');
+}
+
+
+
+int main()
+{
+    char str[50];
+    char *p=str;
+    fgets(str,sizeof(str),stdin);
+    while(*p){
+        bf_gen(*p);
+        p++;
+        }
+    return 0;
+
+}
+