New trunk

bzr revid: pinky-3f10ee12cea3c4c75cef44ab04ad33ef47432907

1 files changed, 100 insertions, 0 deletions

diff --git a/bin/reportlab/lib/formatters.py b/bin/reportlab/lib/formatters.py
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+++ b/bin/reportlab/lib/formatters.py
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+#! /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)
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