[Pykafe-commits] SF.net SVN: pykafe: [81] trunk/pykafe/server/currencyformat.py

[<jn...@us...>]

Revision: 81
          http://pykafe.svn.sourceforge.net/pykafe/?rev=81&view=rev
Author:   jnmbk
Date:     2007-06-03 03:07:28 -0700 (Sun, 03 Jun 2007)

Log Message:
-----------
currency thing from python 2.5

Added Paths:
-----------
    trunk/pykafe/server/currencyformat.py

Added: trunk/pykafe/server/currencyformat.py
===================================================================
--- trunk/pykafe/server/currencyformat.py	                        (rev 0)
+++ trunk/pykafe/server/currencyformat.py	2007-06-03 10:07:28 UTC (rev 81)
@@ -0,0 +1,93 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright (C) 2007, pyKafe Development Team
+#
+# This program is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free
+# Software Foundation; either version 2 of the License, or (at your option)
+# any later version.
+#
+# Please read the COPYING file.
+#
+
+import locale
+
+#taken from python 2.5 sources
+#TODO: Remove these when Python 2.5 is widely available
+def format(percent, value, grouping=False, monetary=False, *additional):
+    """Returns the locale-aware substitution of a %? specifier
+    (percent).
+
+    additional is for format strings which contain one or more
+    '*' modifiers."""
+    # this is only for one-percent-specifier strings and this should be checked
+    if percent[0] != '%':
+        raise ValueError("format() must be given exactly one %char "
+                         "format specifier")
+    if additional:
+        formatted = percent % ((value,) + additional)
+    else:
+        formatted = percent % value
+    # floats and decimal ints need special action!
+    if percent[-1] in 'eEfFgG':
+        seps = 0
+        parts = formatted.split('.')
+        if grouping:
+            parts[0], seps = locale._group(parts[0], monetary=monetary)
+        decimal_point = locale.localeconv()[monetary and 'mon_decimal_point'
+                                              or 'decimal_point']
+        formatted = decimal_point.join(parts)
+        while seps:
+            sp = formatted.find(' ')
+            if sp == -1: break
+            formatted = formatted[:sp] + formatted[sp+1:]
+            seps -= 1
+    elif percent[-1] in 'diu':
+        if grouping:
+            formatted = locale._group(formatted, monetary=monetary)[0]
+    return formatted
+
+def currency(val, symbol=True, grouping=False, international=False):
+    """Formats val according to the currency settings
+    in the current locale."""
+    conv = locale.localeconv()
+
+    # check for illegal values
+    digits = conv[international and 'int_frac_digits' or 'frac_digits']
+    if digits == 127:
+        raise ValueError("Currency formatting is not possible using "
+                         "the 'C' locale.")
+
+    s = format('%%.%if' % digits, abs(val), grouping, monetary=True)
+    # '<' and '>' are markers if the sign must be inserted between symbol and value
+    s = '<' + s + '>'
+
+    if symbol:
+        smb = conv[international and 'int_curr_symbol' or 'currency_symbol']
+        precedes = conv[val<0 and 'n_cs_precedes' or 'p_cs_precedes']
+        separated = conv[val<0 and 'n_sep_by_space' or 'p_sep_by_space']
+
+        if precedes:
+            s = smb + (separated and ' ' or '') + s
+        else:
+            s = s + (separated and ' ' or '') + smb
+
+    sign_pos = conv[val<0 and 'n_sign_posn' or 'p_sign_posn']
+    sign = conv[val<0 and 'negative_sign' or 'positive_sign']
+
+    if sign_pos == 0:
+        s = '(' + s + ')'
+    elif sign_pos == 1:
+        s = sign + s
+    elif sign_pos == 2:
+        s = s + sign
+    elif sign_pos == 3:
+        s = s.replace('<', sign)
+    elif sign_pos == 4:
+        s = s.replace('>', sign)
+    else:
+        # the default if nothing specified;
+        # this should be the most fitting sign position
+        s = sign + s
+
+    return s.replace('<', '').replace('>', '')


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