marcus/scour
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Only use number representation with reduced precision if it is shorter than the initial representation.

Browse source 
Before it could happen that "123" was replaced with "1e3" if precision was set to 1 which is obviously not desirable.
This commit is contained in:
Eduard Braun 2017-02-18 19:01:26 +01:00
parent b00b374e64
commit 8f87118725
1 changed files with 17 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

21
scour/scour.py
View file

@ -2623,6 +2623,16 @@ def scourUnitlessLength(length, needsRendererWorkaround=False): # length is of
if not isinstance(length, Decimal):
length = getcontext().create_decimal(str(length))
# remove trailing zeroes as we do not care for significance
intLength = length.to_integral_value()
if length == intLength:
length = Decimal(intLength)
else:
length = length.normalize()
# Gather the initial non-scientific notation version of the coordinate (we want to compare with it later)
initial_value = '{0:f}'.format(length)
# reduce numeric precision
# plus() corresponds to the unary prefix plus operator and applies context precision and rounding
length = scouringContext.plus(length)
@ -2641,6 +2651,7 @@ def scourUnitlessLength(length, needsRendererWorkaround=False): # length is of
nonsci = nonsci[1:] # remove the 0, leave the dot
elif len(nonsci) > 3 and nonsci[:3] == '-0.':
nonsci = '-' + nonsci[2:] # remove the 0, leave the minus and dot
return_value = nonsci
# Gather the scientific notation version of the coordinate which
# can only be shorter if the length of the number is at least 4 characters (e.g. 1000 = 1e3).
@ -2653,11 +2664,13 @@ def scourUnitlessLength(length, needsRendererWorkaround=False): # length is of
sci = six.text_type(length) + 'e' + six.text_type(exponent)
if len(sci) < len(nonsci):
return sci
else:
return nonsci
return_value = sci
# Return the shortest representation (if they are equal prefer the original as it still has the full precision)
if len(return_value) < len(initial_value):
return return_value
else:
return nonsci
return initial_value
def reducePrecision(element):