import os,string,time
import marshal
import App.FindHomes

tmpStorageDir=os.path.join(INSTANCE_HOME,'var','tmpStorage')

def tmpStore(self,data,RESPONSE,ex=os.path.exists,jn=os.path.join):
    '''Marshals and stores data on a regular file given by unique id'''

    # Create UID
    tm=time
    ip=self.REQUEST['REMOTE_ADDR']
    t=tm.gmtime(tm.time())
    uid='%s%s'%(tm.strftime('%j%I%M%S',t),ip[-5:])
    day=jn(tmpStorageDir,uid[:3])
    hour=jn(day,uid[3:5])
    minute=jn(hour,uid[5:7])
    
    if not ex(day):
        os.mkdir(day)
    if not ex(hour):
        os.mkdir(hour)
    if not ex(minute):
        os.mkdir(minute)

    f=open(jn(minute,uid),'w')
    marshal.dump(data,f)
    f.close()
    RESPONSE.setCookie('tmpStorageUID',uid)
    return uid
    
def tmpRetrieve(self,tmpStorageUID=None,jn=os.path.join):

    '''Retrieves data stored in temporary file. '''

    if tmpStorageUID==None:
        if self.REQUEST.has_key('tmpStorageUID'):
            tmpStorageUID=self.REQUEST['tmpStorageUID']
        else:
            return None
    uid=tmpStorageUID
    day=jn(tmpStorageDir,uid[:3])
    hour=jn(day,uid[3:5])
    minute=jn(hour,uid[5:7])

    f=open(jn(minute,uid),'r')
    data=marshal.load(f)
    f.close()
    return data