python-oxlib/oxutils/format.py
2008-04-28 11:25:52 +02:00

143 lines
3.5 KiB
Python

# -*- coding: utf-8 -*-
# vi:si:et:sw=2:sts=2:ts=2
import math
import re
def to36(q):
"""
Converts an integer to base 36 (a useful scheme for human-sayable IDs).
>>> to36(35)
'z'
>>> to36(119292)
'2k1o'
>>> int(to36(939387374), 36)
939387374
>>> to36(0)
'0'
>>> to36(-393)
Traceback (most recent call last):
...
ValueError: must supply a positive integer
"""
if q < 0: raise ValueError, "must supply a positive integer"
letters = "0123456789abcdefghijklmnopqrstuvwxyz"
converted = []
while q != 0:
q, r = divmod(q, 36)
converted.insert(0, letters[r])
return "".join(converted) or '0'
def from36(q):
return int(q, 36)
def intValue(strValue, default=''):
try:
val = re.compile('(\d*)').findall(unicode(strValue))[0]
except:
val = default
return val
def floatValue(strValue, default=''):
try:
val = re.compile('([\d.]*)').findall(unicode(strValue))[0]
except:
val = default
return val
def formatNumber(number, longName, shortName):
"""
Return the number in a human-readable format (23 KB, 23.4 MB, 23.42 GB)
"""
if number < 1024:
return '%s %s%s' % (formatThousands(number), longName, number != 1 and 's' or '')
prefix = ['K', 'M', 'G', 'T', 'P']
for i in range(5):
if number < math.pow(1024, i + 2) or i == 4:
n = number / math.pow(1024, i + 1)
return '%s %s%s' % (formatThousands('%.*f' % (i, n)), prefix[i], shortName)
def formatThousands(number, separator = ','):
"""
Return the number with separators (1,000,000)
"""
string = str(number).split('.')
l = []
for i, character in enumerate(reversed(string[0])):
if i and (not (i % 3)):
l.insert(0, separator)
l.insert(0, character)
string[0] = ''.join(l)
return '.'.join(string)
def formatBits(number):
return formatNumber(number, 'bit', 'b')
def formatBytes(number):
return formatNumber(number, 'byte', 'B')
def formatPixels(number):
return formatNumber(number, 'pixel', 'px')
def plural(amount, unit, plural='s'):
if abs(amount) != 1:
if plural == 's':
unit = unit + plural
else: unit = plural
return "%s %s" % (formatNumber(amount), unit)
def ms2runtime(ms):
seconds = int(ms / 1000)
years = 0
days = 0
hours = 0
minutes = 0
if seconds >= 60:
minutes = int(seconds / 60)
seconds = seconds % 60
if minutes >= 60:
hours = int(minutes / 60)
minutes = minutes % 60
if hours >= 24:
days = int(hours / 24)
hours = hours % 24
if days >= 365:
years = int(days / 365)
days = days % 365
runtimeString = (plural(years, 'year'), plural(days, 'day'),
plural(hours,'hour'), plural(minutes, 'minute'), plural(seconds, 'second'))
runtimeString = filter(lambda x: not x.startswith('0'), runtimeString)
return " ".join(runtimeString).strip()
def ms2playtime(ms):
it = int(ms / 1000)
ms = ms - it*1000
ss = it % 60
mm = ((it-ss)/60) % 60
hh = ((it-(mm*60)-ss)/3600) % 60
if hh:
playtime= "%02d:%02d:%02d" % (hh, mm, ss)
else:
playtime= "%02d:%02d" % (mm, ss)
return playtime
def ms2time(ms):
it = int(ms / 1000)
ms = ms - it*1000
ss = it % 60
mm = ((it-ss)/60) % 60
hh = ((it-(mm*60)-ss)/3600) % 60
return "%d:%02d:%02d.%03d" % (hh, mm, ss, ms)
def time2ms(timeString):
ms = 0.0
p = timeString.split(':')
for i in range(len(p)):
ms = ms * 60 + float(p[i])
return int(ms * 1000)
def shiftTime(offset, timeString):
newTime = time2ms(timeString) + offset
return ms2time(newTime)