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#!/usr/bin/python2.7
import argparse as ap
import sys
parser = ap.ArgumentParser()
parser.add_argument("file1", help="First file to compare")
parser.add_argument("file2", help="Second file to compare")
parser.add_argument("-reltol", help="Relative error")
parser.add_argument("-abstol", help="Absolute error")
parser.add_argument("-s", help="Silent output", action="store_true")
args = parser.parse_args()
reltol = float(args.reltol) if args.reltol else None
abstol = float(args.abstol) if args.abstol else None
silent = args.s
if silent:
sys.stdout = open("/dev/null", "w")
import re
from math import fabs
def floatcmp(f1, f2):
if abstol:
if fabs(f1 - f2) > abstol:
return False
if reltol:
if f2 != 0. and fabs((f1 - f2) / f2) > reltol:
return False
return True
class Parsed(list):
def __eq__(self, other):
if len(self) != len(other):
return False
comps = zip(self, other)
for comp in comps:
if all(isinstance(compElt, str) for compElt in comp):
if comp[0] != comp[1]:
return False
elif all (isinstance(compElt, float) for compElt in comp):
if not floatcmp(comp[0], comp[1]):
return False
else:
return False
return True
def __ne__(self, other):
return not self.__eq__(other)
parseLine = re.compile(r"\s*(\S+)")
def readline(line):
words = parseLine.findall(line)
parsed = Parsed([])
for word in words:
try:
parse = float(word)
parsed.append(parse)
except ValueError:
parsed.append(word)
return parsed
def readfile(filename):
L = []
try:
with open(filename) as f:
for line in f:
L.append(readline(line))
except IOError:
print "Unable to read {}".format(filename)
sys.exit(2)
return L
L1 = readfile(args.file1)
L2 = readfile(args.file2)
if len(L1) != len(L2):
print "The files have different amount of lines"
print "\t{}: {} lines".format(args.file1, len(L1))
print "\t{}: {} lines".format(args.file2, len(L2))
sys.exit(1)
cmpL = zip(L1, L2)
for i, cmpElt in enumerate(cmpL):
if cmpElt[0] != cmpElt[1]:
print "The files differ at line {}".format(i)
print "\t{}: {}".format(args.file1, cmpElt[0])
print "\t{}: {}".format(args.file2, cmpElt[1])
sys.exit(1)
print "Comparison succeeded"
sys.exit(0)
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