Server Help :: View topic - Custom datafile. Calling back data and storing it.

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#!/usr/bin/env python

# This python script file is just an example for BDwinsAlt.
# It gives a simple illustration of how to read, write and parse a file.

class Player:
def __init__(me):
   me.rank = 0
   me.money = 0
   me.exp = 0

def savepdata(pname, p):

# overwrite the lines with new values, otherwise write new lines

lines = []
moneyset = rankset = expset = False

# for line in open("pdata.tmp", "r").readlines():
file = open("pdata.tmp", "r")
if file:
   for line in file.readlines():
      name, var, val = line.split(':')
      if name == pname:
         if var == 'money':
            val = p.money
            moneyset = True
         elif var == 'rank':
            val = p.rank
            rankset = True
         else:
            val = p.exp
            expset = True

         line = "%s:%s:%s\n" % (pname, var, val) # the line already existed, "overwrite" with new value
      lines.append(line)
   file.close()

# if there was no data to be overwritten then we'll have to create new lines to make sure
# all data for this player is stored in the textfile.

if not moneyset:
   line = "%s:money:%d\n" % (pname, p.money)
   lines.append(line)

if not rankset:
   line = "%s:rank:%d\n" % (pname, p.rank)
   lines.append(line)

if not expset:
   line = "%s:exp:%d\n" % (pname, p.exp)
   lines.append(line)

# eventually save the lines to the temporary file

file = open("pdata.tmp", "w")
if file:
   for line in lines:
      file.write(line)
   file.close()

def getpdata(pname):

# this will read the textfile, then it'll return the data for the requested player
# if a player's variable couldn't be found the value of the var will be zero (0)

p = Player()
# iterate through the temporary file and process it line by line
for line in open("pdata.tmp", "r").readlines(): # this operation might have to be optimized for larger files
   name, var, val = line.split(':') # split the line (should we provide a maxsplit here?)
   if name == pname:
      val = int(val) # make sure we're using an int-type variable
      if var == 'money':
         p.money = val
      elif var == 'rank':
         p.rank = val
      else:
         p.exp = val
return p

def main():

# Warning: you might have to check for weird characters in player names before calling getpdata.
# Also, it'd be wise to lowercase a name before storing it and when requesting player data.
# Anyway, this is just to help you "get started", all these other problems are yours. :)

pname = 'BDwinsAlt'
p = getpdata(pname)
print "Data read for %s:\r\n\tRank: %8d\r\n\tMoney: %8d\r\n\tExp: %8d\r\n" % (pname, p.rank, p.money, p.exp)

pname = 'Solo Ace'
p = getpdata(pname)
print "Data read for %s:\r\n\tRank: %8d\r\n\tMoney: %8d\r\n\tExp: %8d\r\n" % (pname, p.rank, p.money, p.exp)

p.rank = 4000; # new values
p.exp = 4111;

print "Saving new data for %s...\r\n" % pname

savepdata(pname, p) # we modified Solo Ace's rank/exp after reading it, so we're saving it here again

# now let's see what reading Solo Ace's data gives us, it should return the modified values!

p = getpdata(pname)
print "Data read for %s:\r\n\tRank: %8d\r\n\tMoney: %8d\r\n\tExp: %8d\r\n" % (pname, p.rank, p.money, p.exp)

pname = 'Smong'
p = getpdata(pname)
print "Data read for %s:\r\n\tRank: %8d\r\n\tMoney: %8d\r\n\tExp: %8d\r\n" % (pname, p.rank, p.money, p.exp)

if __name__ == '__main__':
main()