Mercurial > public > mercurial-scm > hg

annotate mercurial/mdiff.py @ 125:8913e13196e1

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Remove python version of the patches code
author mpm@selenic.com
date Fri, 20 May 2005 17:49:25 -0800
parents bae6f0328f63
children 44538462d3c8
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
1 #!/usr/bin/python
125
8913e13196e1 Remove python version of the patches code
mpm@selenic.com
parents: 120
diff changeset
2 import difflib, struct, mmap, mpatchs
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
3
64
b3e2ddff0159 Diff in subdirectories from Jake Edge
mpm@selenic.com
parents: 35
diff changeset
4 def unidiff(a, ad, b, bd, fn):
35
9197c26a414b unidiff: punt on comparing empty files
mpm@selenic.com
parents: 0
diff changeset
5 if not a and not b: return ""
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
6 a = a.splitlines(1)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
7 b = b.splitlines(1)
64
b3e2ddff0159 Diff in subdirectories from Jake Edge
mpm@selenic.com
parents: 35
diff changeset
8 l = list(difflib.unified_diff(a, b, "a/" + fn, "b/" + fn, ad, bd))
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
9 return "".join(l)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
10
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
11 def textdiff(a, b):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
12 return diff(a.splitlines(1), b.splitlines(1))
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
13
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
14 def sortdiff(a, b):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
15 la = lb = 0
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 while 1:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
18 if la >= len(a) or lb >= len(b): break
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
19 if b[lb] < a[la]:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
20 si = lb
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
21 while lb < len(b) and b[lb] < a[la] : lb += 1
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
22 yield "insert", la, la, si, lb
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
23 elif a[la] < b[lb]:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
24 si = la
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
25 while la < len(a) and a[la] < b[lb]: la += 1
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
26 yield "delete", si, la, lb, lb
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
27 else:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
28 la += 1
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
29 lb += 1
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
30
64
b3e2ddff0159 Diff in subdirectories from Jake Edge
mpm@selenic.com
parents: 35
diff changeset
31 if lb < len(b):
b3e2ddff0159 Diff in subdirectories from Jake Edge
mpm@selenic.com
parents: 35
diff changeset
32 yield "insert", la, la, lb, len(b)
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
33
64
b3e2ddff0159 Diff in subdirectories from Jake Edge
mpm@selenic.com
parents: 35
diff changeset
34 if la < len(a):
b3e2ddff0159 Diff in subdirectories from Jake Edge
mpm@selenic.com
parents: 35
diff changeset
35 yield "delete", la, len(a), lb, lb
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
36
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
37 def diff(a, b, sorted=0):
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
38 bin = []
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
39 p = [0]
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
40 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
41
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
42 if sorted:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
43 d = sortdiff(a, b)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
44 else:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
45 d = difflib.SequenceMatcher(None, a, b).get_opcodes()
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
46
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
47 for o, m, n, s, t in d:
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
48 if o == 'equal': continue
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
49 s = "".join(b[s:t])
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
50 bin.append(struct.pack(">lll", p[m], p[n], len(s)) + s)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
51
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
52 return "".join(bin)
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
53
120
bae6f0328f63 Add a function to return the new text from a binary diff
mpm@selenic.com
parents: 75
diff changeset
54 def patchtext(bin):
bae6f0328f63 Add a function to return the new text from a binary diff
mpm@selenic.com
parents: 75
diff changeset
55 pos = 0
bae6f0328f63 Add a function to return the new text from a binary diff
mpm@selenic.com
parents: 75
diff changeset
56 t = []
bae6f0328f63 Add a function to return the new text from a binary diff
mpm@selenic.com
parents: 75
diff changeset
57 while pos < len(bin):
bae6f0328f63 Add a function to return the new text from a binary diff
mpm@selenic.com
parents: 75
diff changeset
58 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
59 pos += 12
bae6f0328f63 Add a function to return the new text from a binary diff
mpm@selenic.com
parents: 75
diff changeset
60 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
61 pos += l
bae6f0328f63 Add a function to return the new text from a binary diff
mpm@selenic.com
parents: 75
diff changeset
62 return "".join(t)
bae6f0328f63 Add a function to return the new text from a binary diff
mpm@selenic.com
parents: 75
diff changeset
63
0
9117c6561b0b Add back links from file revisions to changeset revisions
mpm@selenic.com
parents:
diff changeset
64 def patch(a, bin):
72
4a6ab4d80dc4 Add an O(m + nlog n) patching extension
mpm@selenic.com
parents: 71
diff changeset
65 return patches(a, [bin])