author | mpm@selenic.com |
Sat, 28 May 2005 14:09:11 -0800 | |
changeset 188 | f40273b0ad7b |
parent 184 | 697f05bfe976 |
child 239 | 75840796e8e2 |
child 241 | afe895fcc0d0 |
permissions | -rw-r--r-- |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
1 |
#!/usr/bin/python |
127 | 2 |
import difflib, struct, mmap |
3 |
from mercurial.mpatch import * |
|
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
4 |
|
64 | 5 |
def unidiff(a, ad, b, bd, fn): |
35 | 6 |
if not a and not b: return "" |
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
7 |
a = a.splitlines(1) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
8 |
b = b.splitlines(1) |
64 | 9 |
l = list(difflib.unified_diff(a, b, "a/" + fn, "b/" + fn, ad, bd)) |
170 | 10 |
|
11 |
for ln in xrange(len(l)): |
|
12 |
if l[ln][-1] != '\n': |
|
13 |
l[ln] += "\n\ No newline at end of file\n" |
|
14 |
||
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
15 |
return "".join(l) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
16 |
|
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
17 |
def textdiff(a, b): |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
18 |
return diff(a.splitlines(1), b.splitlines(1)) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
19 |
|
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
20 |
def sortdiff(a, b): |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
21 |
la = lb = 0 |
184 | 22 |
lena = len(a) |
23 |
lenb = len(b) |
|
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
24 |
while 1: |
184 | 25 |
am, bm, = la, lb |
26 |
while lb < lenb and la < len and a[la] == b[lb] : |
|
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
27 |
la += 1 |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
28 |
lb += 1 |
184 | 29 |
if la>am: yield (am, bm, la-am) |
30 |
while lb < lenb and b[lb] < a[la]: lb += 1 |
|
31 |
if lb>=lenb: break |
|
32 |
while la < lena and b[lb] > a[la]: la += 1 |
|
33 |
if la>=lena: break |
|
34 |
yield (lena, lenb, 0) |
|
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
35 |
|
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
36 |
def diff(a, b, sorted=0): |
184 | 37 |
if not a: |
38 |
s = "".join(b) |
|
39 |
return s and (struct.pack(">lll", 0, 0, len(s)) + s) |
|
40 |
||
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
41 |
bin = [] |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
42 |
p = [0] |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
43 |
for i in a: p.append(p[-1] + len(i)) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
44 |
|
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
45 |
if sorted: |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
46 |
d = sortdiff(a, b) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
47 |
else: |
184 | 48 |
d = difflib.SequenceMatcher(None, a, b).get_matching_blocks() |
49 |
la = 0 |
|
50 |
lb = 0 |
|
51 |
for am, bm, size in d: |
|
52 |
s = "".join(b[lb:bm]) |
|
53 |
if am > la or s: |
|
54 |
bin.append(struct.pack(">lll", p[la], p[am], len(s)) + s) |
|
55 |
la = am + size |
|
56 |
lb = bm + size |
|
57 |
||
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
58 |
return "".join(bin) |
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
59 |
|
120
bae6f0328f63
Add a function to return the new text from a binary diff
mpm@selenic.com
parents:
75
diff
changeset
|
60 |
def patchtext(bin): |
bae6f0328f63
Add a function to return the new text from a binary diff
mpm@selenic.com
parents:
75
diff
changeset
|
61 |
pos = 0 |
bae6f0328f63
Add a function to return the new text from a binary diff
mpm@selenic.com
parents:
75
diff
changeset
|
62 |
t = [] |
bae6f0328f63
Add a function to return the new text from a binary diff
mpm@selenic.com
parents:
75
diff
changeset
|
63 |
while pos < len(bin): |
bae6f0328f63
Add a function to return the new text from a binary diff
mpm@selenic.com
parents:
75
diff
changeset
|
64 |
p1, p2, l = struct.unpack(">lll", bin[pos:pos + 12]) |
bae6f0328f63
Add a function to return the new text from a binary diff
mpm@selenic.com
parents:
75
diff
changeset
|
65 |
pos += 12 |
bae6f0328f63
Add a function to return the new text from a binary diff
mpm@selenic.com
parents:
75
diff
changeset
|
66 |
t.append(bin[pos:pos + l]) |
bae6f0328f63
Add a function to return the new text from a binary diff
mpm@selenic.com
parents:
75
diff
changeset
|
67 |
pos += l |
bae6f0328f63
Add a function to return the new text from a binary diff
mpm@selenic.com
parents:
75
diff
changeset
|
68 |
return "".join(t) |
bae6f0328f63
Add a function to return the new text from a binary diff
mpm@selenic.com
parents:
75
diff
changeset
|
69 |
|
0
9117c6561b0b
Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff
changeset
|
70 |
def patch(a, bin): |
72 | 71 |
return patches(a, [bin]) |