Wander Wonder Item Dump v1

import os
import struct

#Gets data
def get_data(filename):
    totalbytes = os.path.getsize(filename)
    infile = open(filename, 'rb')
    totalfiledata = infile.read(totalbytes)
    infile.close()
    return totalfiledata

#Tells if the string s is a SHIFT-JIS character or not
def is_jis_char(s):
    if len(s) != 2: #If it's not a string of length 2, then...
        return False
    try:            #Python error handling
        if len(s.decode('cp932')) != 1: #For example, 2 ascii characters will be length 2
            return False                #Two bytes that decode to a SHIFT-JIS character will be length 1
    except UnicodeDecodeError:  #The string couldn't be decoded
        return False            #Not a SHIFT-JIS character
    return True                 #It is a SHIFT-JIS character

filedata = get_data('item.sq')  #Get data
ptr = 0                         #Initialize variables
with open('itemdata.csv','wb') as f:    #Open output file
    while ptr < 0x1028:         #Until the end of the pointer table
        target = struct.unpack('<I',filedata[ptr:ptr+4])[0] #Find pointer target
        if ord(filedata[target]) > 31 and ord(filedata[target]) < 127 and \
           ord(filedata[target+1]) > 31 and ord(filedata[target+1]):    #First 2 bytes are both ASCII
            s = filedata[target:filedata.find('\x00',target)]           #Find the string at this position
            if len(s) > 24:                                             #If the string is longer than 24
                f.write(hex(ptr) + ';' + s[:24] + '\r\n')               #Write pointer and 1st 24 characters
                f.write(';' + s[24:] + '\r\n')                          #Write remaining characters
            else:
                f.write(hex(ptr) + ';' + s + '\r\n')                    #Write the pointer and the string
        elif is_jis_char(filedata[target:target+2]):                #First 2 bytes are a SHIFT-JIS character
            s = filedata[target:filedata.find('\x00',target)]       #Same as before
            if len(s) > 24:
                f.write(hex(ptr) + ';' + s[:24] + '\r\n')
                f.write(';' + s[24:] + '\r\n')
            else:
                f.write(hex(ptr) + ';' + s + '\r\n')
        ptr += 4    #Increment the pointer