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from __future__ import absolute_import, print_function
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import struct
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from mercurial import (
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bdiff,
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mpatch,
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)
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def test1(a, b):
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d = bdiff.bdiff(a, b)
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c = a
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if d:
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c = mpatch.patches(a, [d])
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if c != b:
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print("***", repr(a), repr(b))
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print("bad:")
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print(repr(c)[:200])
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print(repr(d))
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def test(a, b):
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print("***", repr(a), repr(b))
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test1(a, b)
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test1(b, a)
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test("a\nc\n\n\n\n", "a\nb\n\n\n")
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test("a\nb\nc\n", "a\nc\n")
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test("", "")
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test("a\nb\nc", "a\nb\nc")
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test("a\nb\nc\nd\n", "a\nd\n")
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test("a\nb\nc\nd\n", "a\nc\ne\n")
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test("a\nb\nc\n", "a\nc\n")
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test("a\n", "c\na\nb\n")
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test("a\n", "")
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test("a\n", "b\nc\n")
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test("a\n", "c\na\n")
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test("", "adjfkjdjksdhfksj")
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test("", "ab")
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test("", "abc")
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test("a", "a")
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test("ab", "ab")
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test("abc", "abc")
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test("a\n", "a\n")
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test("a\nb", "a\nb")
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#issue1295
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def showdiff(a, b):
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bin = bdiff.bdiff(a, b)
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pos = 0
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while pos < len(bin):
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p1, p2, l = struct.unpack(">lll", bin[pos:pos + 12])
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pos += 12
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print(p1, p2, repr(bin[pos:pos + l]))
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pos += l
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showdiff("x\n\nx\n\nx\n\nx\n\nz\n", "x\n\nx\n\ny\n\nx\n\nx\n\nz\n")
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showdiff("x\n\nx\n\nx\n\nx\n\nz\n", "x\n\nx\n\ny\n\nx\n\ny\n\nx\n\nz\n")
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# we should pick up abbbc. rather than bc.de as the longest match
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showdiff("a\nb\nb\nb\nc\n.\nd\ne\n.\nf\n",
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"a\nb\nb\na\nb\nb\nb\nc\n.\nb\nc\n.\nd\ne\nf\n")
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print("done")
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def testfixws(a, b, allws):
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c = bdiff.fixws(a, allws)
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if c != b:
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print("*** fixws", repr(a), repr(b), allws)
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print("got:")
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print(repr(c))
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testfixws(" \ta\r b\t\n", "ab\n", 1)
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testfixws(" \ta\r b\t\n", " a b\n", 0)
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testfixws("", "", 1)
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testfixws("", "", 0)
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print("done")
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