author | Hidetaka Iwai <tyuyu@debian.or.jp> |
Thu, 03 Nov 2005 11:56:51 +0900 | |
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parent 1452 | f1755621cb7d |
child 1540 | 8ca9f5b17257 |
permissions | -rw-r--r-- |
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# mdiff.py - diff and patch routines for mercurial |
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# |
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# Copyright 2005 Matt Mackall <mpm@selenic.com> |
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# |
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# This software may be used and distributed according to the terms |
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# of the GNU General Public License, incorporated herein by reference. |
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import difflib, struct, bdiff, util, mpatch |
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def unidiff(a, ad, b, bd, fn, r=None, text=False): |
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if not a and not b: return "" |
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epoch = util.datestr((0, 0)) |
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if not text and (util.binary(a) or util.binary(b)): |
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l = ['Binary file %s has changed\n' % fn] |
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elif a == None: |
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b = b.splitlines(1) |
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l1 = "--- %s\t%s\n" % ("/dev/null", epoch) |
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l2 = "+++ %s\t%s\n" % ("b/" + fn, bd) |
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l3 = "@@ -0,0 +1,%d @@\n" % len(b) |
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l = [l1, l2, l3] + ["+" + e for e in b] |
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elif b == None: |
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a = a.splitlines(1) |
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l1 = "--- %s\t%s\n" % ("a/" + fn, ad) |
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l2 = "+++ %s\t%s\n" % ("/dev/null", epoch) |
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l3 = "@@ -1,%d +0,0 @@\n" % len(a) |
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l = [l1, l2, l3] + ["-" + e for e in a] |
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else: |
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a = a.splitlines(1) |
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b = b.splitlines(1) |
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l = list(difflib.unified_diff(a, b, "a/" + fn, "b/" + fn)) |
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if not l: return "" |
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# difflib uses a space, rather than a tab |
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l[0] = l[0][:-2] + "\t" + ad + "\n" |
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l[1] = l[1][:-2] + "\t" + bd + "\n" |
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for ln in xrange(len(l)): |
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if l[ln][-1] != '\n': |
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l[ln] += "\n\ No newline at end of file\n" |
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if r: |
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l.insert(0, "diff %s %s\n" % |
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(' '.join(["-r %s" % rev for rev in r]), fn)) |
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return "".join(l) |
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def patchtext(bin): |
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pos = 0 |
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t = [] |
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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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t.append(bin[pos:pos + l]) |
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pos += l |
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return "".join(t) |
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def patch(a, bin): |
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return mpatch.patches(a, [bin]) |
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patches = mpatch.patches |
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textdiff = bdiff.bdiff |