# -*-coding:cp949 -*-

import sys
import zlib

def str_to_hex(strs):
	f = lambda x:x[2:]
	tmp = map(hex,map(ord,strs))
	return ' '.join(map(f,tmp))

def chr_to_num(strs):
	tmp=list(strs)
	tmp.reverse()
	set_hex=lambda x:"%.2x"%x
	return eval("0x"+''.join(map(set_hex,map(ord,tmp))))


try:
	f = open(sys.argv[1],'rb')
except:
	print "usage : evf_parse.py file_name"
	sys.exit(0)



fout = open('result.txt','wb')
fout.write("----- evf parsing -----\r\n")

tmp = f.read(8)
fout.write("signature : " + str_to_hex(tmp) + "\t| (45 56 46 09 0d 0a ff 00)\r\n")

tmp = f.read(5)
fout.write("fields : " + str_to_hex(tmp) + "\t| (0x01 [1 or higher] 0x00 0x00)\r\n")
header_cnt = 1
volume_cnt = 1
sectors_cnt = 1
while True:
    try:
	tmp = f.read(76)
	header_type = tmp[:16]
	fout.write("section type : " + tmp[:16] + "\r\n")
	fout.write("64-bit offset in current file to the next section : " + str(chr_to_num(tmp[16:24])) + "\r\n")
	header_len = chr_to_num(tmp[24:32])
	fout.write("64-bit byte-size of the section : " + str(header_len) + "\r\n")
	fout.write("padding : " + str_to_hex(tmp[32:72]) + "\r\n")
	fout.write("CRC of all previous section data : " + str_to_hex(tmp[72:])+"\r\n\r\n")
	
	if 'header' in header_type:
		tmp = f.read(header_len-76)
		ftout = open('header'+str(header_cnt)+'.txt','wb')
		ftout.write(zlib.decompress(tmp))
		ftout.close()	
		header_cnt += 1
	elif 'volume' in header_type:
		tmp = f.read(header_len-76)
		ftout = open('volume'+str(volume_cnt)+'.txt','wb')
		ftout.write("Reserved : " + str_to_hex(tmp[:4]) + "\r\n")
		ftout.write("Chunk Count : " + str(chr_to_num(tmp[4:8])) + "\r\n")
		ftout.write("Sectors per Chunk : " + str(chr_to_num(tmp[8:12])) + "\r\n")
		ftout.write("Bytes per Sector : " + str(chr_to_num(tmp[12:16])) + "\r\n")
		ftout.write("Sector Count : " + str(chr_to_num(tmp[16:20])) + "\r\n")
		ftout.write("Reserved : " + str_to_hex(tmp[20:40]) + "\r\n")
		ftout.write("Padding : " +str_to_hex(tmp[40:85]) + "\r\n")
		ftout.write("Reserved (signature) : " + str_to_hex(tmp[85:90]) + "\r\n")
		ftout.write("CRC of all previous 'volume' : " + str_to_hex(tmp[90:]) + "\r\n")
		ftout.close()
	elif 'sectors' in header_type:
		tmp = f.read(header_len - 76)
		ftout = open('sectors'+str(sectors_cnt)+'.txt','wb')
		ftout.write(zlib.decompress(tmp))
		ftout.close()
	else:
		tmp = f.read(header_len - 76)
    except:
	f.close()
	fout.close()
	break

print "parsing end"