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Fix formatter arithmetic functions to tolerate the value "None" as returned by raw_field.

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Fix format_number to correctly format  integer values when handed the int as a float, as for example by the arithmetic functions.
This commit is contained in:
Charles Haley 2012-06-16 11:20:56 +02:00
parent 13dbc7db42
commit 14ef79d0dc
1 changed files with 18 additions and 11 deletions
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29
src/calibre/utils/formatter_functions.py
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@ -9,6 +9,7 @@ __copyright__ = '2010, Kovid Goyal <kovid@kovidgoyal.net>'
__docformat__ = 'restructuredtext en'
import inspect, re, traceback
from math import trunc
from calibre import human_readable
from calibre.constants import DEBUG
@ -169,8 +170,8 @@ class BuiltinAdd(BuiltinFormatterFunction):
__doc__ = doc = _('add(x, y) -- returns x + y. Throws an exception if either x or y are not numbers.')
def evaluate(self, formatter, kwargs, mi, locals, x, y):
x = float(x if x else 0)
y = float(y if y else 0)
x = float(x if x and x != 'None' else 0)
y = float(y if y and y != 'None' else 0)
return unicode(x + y)
class BuiltinSubtract(BuiltinFormatterFunction):
@ -180,8 +181,8 @@ class BuiltinSubtract(BuiltinFormatterFunction):
__doc__ = doc = _('subtract(x, y) -- returns x - y. Throws an exception if either x or y are not numbers.')
def evaluate(self, formatter, kwargs, mi, locals, x, y):
x = float(x if x else 0)
y = float(y if y else 0)
x = float(x if x and x != 'None' else 0)
y = float(y if y and y != 'None' else 0)
return unicode(x - y)
class BuiltinMultiply(BuiltinFormatterFunction):
@ -191,8 +192,8 @@ class BuiltinMultiply(BuiltinFormatterFunction):
__doc__ = doc = _('multiply(x, y) -- returns x * y. Throws an exception if either x or y are not numbers.')
def evaluate(self, formatter, kwargs, mi, locals, x, y):
x = float(x if x else 0)
y = float(y if y else 0)
x = float(x if x and x != 'None' else 0)
y = float(y if y and y != 'None' else 0)
return unicode(x * y)
class BuiltinDivide(BuiltinFormatterFunction):
@ -202,8 +203,8 @@ class BuiltinDivide(BuiltinFormatterFunction):
__doc__ = doc = _('divide(x, y) -- returns x / y. Throws an exception if either x or y are not numbers.')
def evaluate(self, formatter, kwargs, mi, locals, x, y):
x = float(x if x else 0)
y = float(y if y else 0)
x = float(x if x and x != 'None' else 0)
y = float(y if y and y != 'None' else 0)
return unicode(x / y)
class BuiltinTemplate(BuiltinFormatterFunction):
@ -657,11 +658,17 @@ class BuiltinFormatNumber(BuiltinFormatterFunction):
if val == '' or val == 'None':
return ''
try:
return template.format(float(val))
v1 = float(val)
except:
return ''
try: # Try formatting the value as a float
return template.format(v1)
except:
pass
try:
return template.format(int(val))
try: # Try formatting the value as an int
v2 = trunc(v1)
if v2 == v1:
return template.format(v2)
except:
pass
return ''