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#!/usr/bin/env python3
# MIT License
#
# Copyright (c) 2022 Eugenio Parodi <ceccopierangiolieugenio AT googlemail DOT com>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
def diff(docA, docB):
i1 = min(len(docA),len(docB))
for i,(a,b) in enumerate(zip(docA,docB)):
if a!=b:
i1 = i
break
i2 = min(len(docA),len(docB))-i1
for i,(a,b) in enumerate(zip(reversed(docA[i1:]),reversed(docB[i1:]))):
if a!=b:
i2 = i
break
if i2 == 0:
sliceB = docB[i1:]
sliceA = docA[i1:]
else:
sliceB = docB[i1:-i2]
sliceA = docA[i1:-i2]
print(f" {i1=} {i2=}")
print( " 0 1 2 3 4 5 6 7 8 9 10 11 12")
print(f"o {docA=}")
print(f"o {docB=}")
print(f"sliceA {' '*i1}{sliceA}")
print(f"sliceB {' '*i1}{sliceB}")
if i2 == 0:
docA[i1:] = sliceB
docB[i1:] = sliceA
else:
docA[i1:-i2] = sliceB
docB[i1:-i2] = sliceA
print(f"n {docA=}")
print(f"n {docB=}")
docA = ['a','b','c','d','e','f','g','h','i','j','k','l']
docB = ['a','b','c','d','e','f','g','h','i','j','k','l']
diff(docA, docB)
# Same Size
docA = ['a','b','c','d','e','f','g','h','i','j','k','l']
docB = ['a','b','c','d','x','y','g','h','i','j','k','l']
diff(docA, docB)
diff(docB, docA)
docA = ['a','b','c','d','e','f','g','h','i','j','k','l']
docB = ['1','2','c','d','e','f','g','h','i','j','k','l']
diff(docA, docB)
diff(docB, docA)
docA = ['a','b','c','d','e','f','g','h','i','j','k','l']
docB = ['a','b','c','d','e','f','g','h','i','X','Y','l']
diff(docA, docB)
diff(docB, docA)
docA = ['a','b','c','d','e','f','g','h','i','j','k','l']
docB = ['a','b','c','d','e','f','g','h','i','j','1','2']
diff(docA, docB)
diff(docB, docA)
# Diff Size
docA = ['a','b','c','d', 'g','h','i','j','k','l']
docB = ['a','b','c','d','X','Y','g','h','i','j','k','l']
diff(docA, docB)
diff(docB, docA)
docA = [ 'c','d','e','f','g','h','i','j','k','l']
docB = ['X','Y','c','d','e','f','g','h','i','j','k','l']
diff(docA, docB)
diff(docB, docA)
docA = ['a','b','c','d','e','f','g','h','i','j' ]
docB = ['a','b','c','d','e','f','g','h','i','j','X','Y']
diff(docA, docB)
diff(docB, docA)
# Diff Size
docA = ['a','b','c','d','Z', 'g','h','i','j','k','l']
docB = ['a','b','c','d','X','Y','g','h','i','j','k','l']
diff(docA, docB)
diff(docB, docA)
docA = ['Z', 'c','d','e','f','g','h','i','j','k','l']
docB = ['X','Y','c','d','e','f','g','h','i','j','k','l']
diff(docA, docB)
diff(docB, docA)
docA = ['a','b','c','d','e','f','g','h','i','j','Z' ]
docB = ['a','b','c','d','e','f','g','h','i','j','X','Y']
diff(docA, docB)
diff(docB, docA)
docA = [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
docB = ['a','b','c','d','e','f','g','h','i','j','k','l']
diff(docA, docB)
diff(docB, docA)
docA = []
docB = ['a','b','c','d','e','f','g','h','i','j','k','l']
diff(docA, docB)
diff(docB, docA)
docA = []
docB = []
diff(docA, docB)
diff(docB, docA)