bf2ffm.py

import sys
#WARNING - very lazy coding ahead!
bff=open(input("File containing BF code: "),'r')
bfr=bff.read()
bff.close()
bf=""
#get rid of anything extra
for i in bfr:
    if i in "<>+-,.[]":
        bf+=i
#match the []'s
matches=[-1]*len(bf)
c=0
while c<len(bf):
    if bf[c]=="[":
        m=c
        d=0
        try:
            while not(bf[m]=="]" and d-1==0):
                if bf[m]=="]":
                    d-=1
                if bf[m]=="[":
                    d+=1
                m+=1
            matches[m]=c
            matches[c]=m
        except IndexError:
            print("ERROR: bracket mismatch!")
            sys.exit(2)
    c+=1
#now we can piece it together
ffm=""
i=0
while i<len(bf):
    if bf[i]=="<":
        ffm+=str(i)+";lft;0;"+str(i+1)+":"+str(i+1)+"\n"
    if bf[i]==">":
        ffm+=str(i)+";rgt;0;"+str(i+1)+":"+str(i+1)+"\n"
    if bf[i]=="+":
        ffm+=str(i)+";inc;0;"+str(i+1)+":"+str(i+1)+"\n"
    if bf[i]=="-":
        ffm+=str(i)+";dec;0;"+str(i+1)+":"+str(i+1)+"\n"
    if bf[i]==",":
        ffm+=str(i)+";inp;0;"+str(i+1)+":"+str(i+1)+"\n"
    if bf[i]==".":
        ffm+=str(i)+";out;0;"+str(i+1)+":"+str(i+1)+"\n"
    if bf[i]=="[":
        ffm+=str(i)+";nop;1;"+str(matches[i])+":"+str(i+1)+"\n"
    if bf[i]=="]":
        ffm+=str(i)+";nop;1;"+str(i+1)+":"+str(matches[i])+"\n"
    i+=1
ffm+=str(i)+";hlt;0;"+str(i)+":"+str(i)
print(ffm)