100 lines
3.4 KiB
Python
Executable File
100 lines
3.4 KiB
Python
Executable File
#! /usr/bin/python2.3
|
|
#Copyright ReportLab Europe Ltd. 2000-2004
|
|
#see license.txt for license details
|
|
#history http://www.reportlab.co.uk/cgi-bin/viewcvs.cgi/public/reportlab/trunk/reportlab/lib/formatters.py
|
|
__version__=''' $Id$ '''
|
|
__doc__="""
|
|
These help format numbers and dates in a user friendly way.
|
|
|
|
Used by the graphics framework.
|
|
"""
|
|
import string, sys, os
|
|
|
|
class Formatter:
|
|
"Base formatter - simply applies python format strings"
|
|
def __init__(self, pattern):
|
|
self.pattern = pattern
|
|
def format(self, obj):
|
|
return self.pattern % obj
|
|
def __repr__(self):
|
|
return "%s('%s')" % (self.__class__.__name__, self.pattern)
|
|
def __call__(self, x):
|
|
return self.format(x)
|
|
|
|
|
|
class DecimalFormatter(Formatter):
|
|
"""lets you specify how to build a decimal.
|
|
|
|
A future NumberFormatter class will take Microsoft-style patterns
|
|
instead - "$#,##0.00" is WAY easier than this."""
|
|
def __init__(self, places=2, decimalSep='.', thousandSep=None, prefix=None, suffix=None):
|
|
self.places = places
|
|
self.dot = decimalSep
|
|
self.comma = thousandSep
|
|
self.prefix = prefix
|
|
self.suffix = suffix
|
|
|
|
def format(self, num):
|
|
# positivize the numbers
|
|
sign=num<0
|
|
if sign:
|
|
num = -num
|
|
places, sep = self.places, self.dot
|
|
strip = places<=0
|
|
if places and strip: places = -places
|
|
strInt = ('%.' + str(places) + 'f') % num
|
|
if places:
|
|
strInt, strFrac = strInt.split('.')
|
|
strFrac = sep + strFrac
|
|
if strip:
|
|
while strFrac and strFrac[-1] in ['0',sep]: strFrac = strFrac[:-1]
|
|
else:
|
|
strFrac = ''
|
|
|
|
if self.comma is not None:
|
|
strNew = ''
|
|
while strInt:
|
|
left, right = strInt[0:-3], strInt[-3:]
|
|
if left == '':
|
|
#strNew = self.comma + right + strNew
|
|
strNew = right + strNew
|
|
else:
|
|
strNew = self.comma + right + strNew
|
|
strInt = left
|
|
strInt = strNew
|
|
|
|
strBody = strInt + strFrac
|
|
if sign: strBody = '-' + strBody
|
|
if self.prefix:
|
|
strBody = self.prefix + strBody
|
|
if self.suffix:
|
|
strBody = strBody + self.suffix
|
|
return strBody
|
|
|
|
def __repr__(self):
|
|
return "%s(places=%d, decimalSep=%s, thousandSep=%s, prefix=%s, suffix=%s)" % (
|
|
self.__class__.__name__,
|
|
self.places,
|
|
repr(self.dot),
|
|
repr(self.comma),
|
|
repr(self.prefix),
|
|
repr(self.suffix)
|
|
)
|
|
|
|
if __name__=='__main__':
|
|
def t(n, s, places=2, decimalSep='.', thousandSep=None, prefix=None, suffix=None):
|
|
f=DecimalFormatter(places,decimalSep,thousandSep,prefix,suffix)
|
|
r = f(n)
|
|
print "places=%2d dot=%-4s comma=%-4s prefix=%-4s suffix=%-4s result=%10s %s" %(f.places, f.dot, f.comma, f.prefix, f.suffix,r, r==s and 'OK' or 'BAD')
|
|
t(1000.9,'1,000.9',1,thousandSep=',')
|
|
t(1000.95,'1,001.0',1,thousandSep=',')
|
|
t(1000.95,'1,001',-1,thousandSep=',')
|
|
t(1000.9,'1,001',0,thousandSep=',')
|
|
t(1000.9,'1000.9',1)
|
|
t(1000.95,'1001.0',1)
|
|
t(1000.95,'1001',-1)
|
|
t(1000.9,'1001',0)
|
|
t(1000.1,'1000.1',1)
|
|
t(1000.55,'1000.6',1)
|
|
t(1000.449,'1000.4',-1)
|
|
t(1000.45,'1000',0) |