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#!/usr/bin/python
# -*- coding: utf8 -*-
# fever - by Michał Bentkowski 2007
# licensed under GPL
# this file contains a few functions not direct related with fever,
# but fever can't work without them.
# I decided to split it because the main file would be too inlegible
import re
import tempfile
import sys
import urllib
def unit(number):
"""Changes bytes unit to more legible one"""
mp=1024
prefixes="","k","M","G","T" # probably we don't need more ones :-)
for (p, i) in zip(prefixes, map(lambda x: mp**x, xrange(len(prefixes)))):
x=float(number)/i
if x < mp:
return "%0.2f %sB" % (x,p)
def download(url,verbose=False):
"""Downloads specified URL. Returns its content"""
block_size=10240
temp=tempfile.TemporaryFile()
file=urllib.urlopen(url)
try:
filesize=" of "+unit(long(file.headers["content-length"]))
except KeyError:
filesize=""
block=file.read(block_size)
bytes=0
while block != "":
bytes+=len(block)
temp.write(block)
if verbose:
sys.stdout.write("\rDownloading %s... %s%s" % (file.url[:40], unit(bytes), filesize))
sys.stdout.flush()
block=file.read(block_size)
if verbose: print "\nDownloaded!"
temp.seek(0)
return temp.read()
def rpmvercmp(a, b):
""" Comparing algorithm based on original rpmvercmp """
a,b=map(re.split,("[\W_]+|(\d+)",)*2,(str(a),str(b))) # split versions strings according to rpm version
# comparing algorithm
a,b=map(lambda x: [elem for elem in x if elem not in (None, "")],[a,b]) # and remove empty
# elements
for elem_a, elem_b in zip(a,b):
try:
elem_a=int(elem_a)
except ValueError:
pass
try:
elem_b=int(elem_b)
except ValueError:
pass
elem_a_type,elem_b_type=map(type,(elem_a,elem_b))
if elem_a_type != elem_b_type:
if elem_a_type == int:
return 1
else:
return -1
elif (elem_a_type, elem_b_type) == (int,)*2:
compare=cmp(int(elem_a),int(elem_b))
if compare != 0:
return compare
else:
compare=cmp(elem_a, elem_b)
if compare != 0:
return compare
return cmp(len(a),len(b))
def vercmpsort(List):
"""Sorting based on an rpmvercmp algorithm"""
for indexes in range(len(List)-1, 0, -1):
for index in range(indexes):
if rpmvercmp(List[index],List[index+1]) == 1:
List[index],List[index+1]=List[index+1],List[index]
List.reverse()
return List
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