15
15
# along with this program; if not, write to the Free Software
16
16
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18
from __future__ import absolute_import
20
from bzrlib.errors import (
26
binary_files_re = b'Binary files (.*) and (.*) differ\n'
29
class PatchSyntax(BzrError):
30
"""Base class for patch syntax errors."""
33
class BinaryFiles(BzrError):
35
_fmt = 'Binary files section encountered.'
37
def __init__(self, orig_name, mod_name):
38
self.orig_name = orig_name
39
self.mod_name = mod_name
42
class MalformedPatchHeader(PatchSyntax):
44
_fmt = "Malformed patch header. %(desc)s\n%(line)r"
46
def __init__(self, desc, line):
51
class MalformedLine(PatchSyntax):
53
_fmt = "Malformed line. %(desc)s\n%(line)r"
55
def __init__(self, desc, line):
60
class PatchConflict(BzrError):
62
_fmt = ('Text contents mismatch at line %(line_no)d. Original has '
63
'"%(orig_line)s", but patch says it should be "%(patch_line)s"')
65
def __init__(self, line_no, orig_line, patch_line):
66
self.line_no = line_no
67
self.orig_line = orig_line.rstrip('\n')
68
self.patch_line = patch_line.rstrip('\n')
71
class MalformedHunkHeader(PatchSyntax):
73
_fmt = "Malformed hunk header. %(desc)s\n%(line)r"
75
def __init__(self, desc, line):
32
binary_files_re = 'Binary files (.*) and (.*) differ\n'
80
35
def get_patch_names(iter_lines):
81
line = next(iter_lines)
36
line = iter_lines.next()
83
38
match = re.match(binary_files_re, line)
84
39
if match is not None:
85
40
raise BinaryFiles(match.group(1), match.group(2))
86
if not line.startswith(b"--- "):
41
if not line.startswith("--- "):
87
42
raise MalformedPatchHeader("No orig name", line)
89
orig_name = line[4:].rstrip(b"\n")
44
orig_name = line[4:].rstrip("\n")
90
45
except StopIteration:
91
46
raise MalformedPatchHeader("No orig line", "")
93
line = next(iter_lines)
94
if not line.startswith(b"+++ "):
48
line = iter_lines.next()
49
if not line.startswith("+++ "):
95
50
raise PatchSyntax("No mod name")
97
mod_name = line[4:].rstrip(b"\n")
52
mod_name = line[4:].rstrip("\n")
98
53
except StopIteration:
99
54
raise MalformedPatchHeader("No mod line", "")
100
55
return (orig_name, mod_name)
122
77
def hunk_from_header(line):
124
matches = re.match(br'\@\@ ([^@]*) \@\@( (.*))?\n', line)
79
matches = re.match(r'\@\@ ([^@]*) \@\@( (.*))?\n', line)
125
80
if matches is None:
126
81
raise MalformedHunkHeader("Does not match format.", line)
128
(orig, mod) = matches.group(1).split(b" ")
129
except (ValueError, IndexError) as e:
83
(orig, mod) = matches.group(1).split(" ")
84
except (ValueError, IndexError), e:
130
85
raise MalformedHunkHeader(str(e), line)
131
if not orig.startswith(b'-') or not mod.startswith(b'+'):
86
if not orig.startswith('-') or not mod.startswith('+'):
132
87
raise MalformedHunkHeader("Positions don't start with + or -.", line)
134
89
(orig_pos, orig_range) = parse_range(orig[1:])
135
90
(mod_pos, mod_range) = parse_range(mod[1:])
136
except (ValueError, IndexError) as e:
91
except (ValueError, IndexError), e:
137
92
raise MalformedHunkHeader(str(e), line)
138
93
if mod_range < 0 or orig_range < 0:
139
94
raise MalformedHunkHeader("Hunk range is negative", line)
141
96
return Hunk(orig_pos, orig_range, mod_pos, mod_range, tail)
144
class HunkLine(object):
146
100
def __init__(self, contents):
147
101
self.contents = contents
149
103
def get_str(self, leadchar):
150
if self.contents == b"\n" and leadchar == b" " and False:
152
if not self.contents.endswith(b'\n'):
153
terminator = b'\n' + NO_NL
104
if self.contents == "\n" and leadchar == " " and False:
106
if not self.contents.endswith('\n'):
107
terminator = '\n' + NO_NL
156
110
return leadchar + self.contents + terminator
159
raise NotImplementedError
162
113
class ContextLine(HunkLine):
164
114
def __init__(self, contents):
165
115
HunkLine.__init__(self, contents)
168
return self.get_str(b" ")
118
return self.get_str(" ")
171
121
class InsertLine(HunkLine):
172
122
def __init__(self, contents):
173
123
HunkLine.__init__(self, contents)
176
return self.get_str(b"+")
126
return self.get_str("+")
179
129
class RemoveLine(HunkLine):
180
130
def __init__(self, contents):
181
131
HunkLine.__init__(self, contents)
184
return self.get_str(b"-")
187
NO_NL = b'\\ No newline at end of file\n'
188
__pychecker__ = "no-returnvalues"
134
return self.get_str("-")
136
NO_NL = '\\ No newline at end of file\n'
137
__pychecker__="no-returnvalues"
191
139
def parse_line(line):
192
if line.startswith(b"\n"):
140
if line.startswith("\n"):
193
141
return ContextLine(line)
194
elif line.startswith(b" "):
142
elif line.startswith(" "):
195
143
return ContextLine(line[1:])
196
elif line.startswith(b"+"):
144
elif line.startswith("+"):
197
145
return InsertLine(line[1:])
198
elif line.startswith(b"-"):
146
elif line.startswith("-"):
199
147
return RemoveLine(line[1:])
201
149
raise MalformedLine("Unknown line type", line)
209
154
def __init__(self, orig_pos, orig_range, mod_pos, mod_range, tail=None):
210
155
self.orig_pos = orig_pos
211
156
self.orig_range = orig_range
217
162
def get_header(self):
218
163
if self.tail is None:
221
tail_str = b' ' + self.tail
222
return b"@@ -%s +%s @@%s\n" % (self.range_str(self.orig_pos,
224
self.range_str(self.mod_pos,
166
tail_str = ' ' + self.tail
167
return "@@ -%s +%s @@%s\n" % (self.range_str(self.orig_pos,
169
self.range_str(self.mod_pos,
228
173
def range_str(self, pos, range):
229
174
"""Return a file range, special-casing for 1-line files.
235
180
:return: a string in the format 1,4 except when range == pos == 1
240
return b"%i,%i" % (pos, range)
185
return "%i,%i" % (pos, range)
243
188
lines = [self.get_header()]
244
189
for line in self.lines:
245
lines.append(line.as_bytes())
246
return b"".join(lines)
190
lines.append(str(line))
191
return "".join(lines)
250
193
def shift_to_mod(self, pos):
251
if pos < self.orig_pos - 1:
194
if pos < self.orig_pos-1:
253
elif pos > self.orig_pos + self.orig_range:
196
elif pos > self.orig_pos+self.orig_range:
254
197
return self.mod_range - self.orig_range
256
199
return self.shift_to_mod_lines(pos)
258
201
def shift_to_mod_lines(self, pos):
259
position = self.orig_pos - 1
202
position = self.orig_pos-1
261
204
for line in self.lines:
262
205
if isinstance(line, InsertLine):
327
269
BinaryPatch.__init__(self, oldname, newname)
331
273
ret = self.get_header()
332
ret += b"".join([h.as_bytes() for h in self.hunks])
274
ret += "".join([str(h) for h in self.hunks])
335
277
def get_header(self):
336
return b"--- %s\n+++ %s\n" % (self.oldname, self.newname)
278
return "--- %s\n+++ %s\n" % (self.oldname, self.newname)
338
280
def stats_values(self):
339
281
"""Calculate the number of inserts and removes."""
404
345
first patch are stripped away in iter_hunks() if it is also passed
405
346
allow_dirty=True. Default False.
407
# FIXME: Docstring is not quite true. We allow certain comments no
348
### FIXME: Docstring is not quite true. We allow certain comments no
408
349
# matter what, If they startwith '===', '***', or '#' Someone should
409
350
# reexamine this logic and decide if we should include those in
410
351
# allow_dirty or restrict those to only being before the patch is found
428
369
dirty_head.append(line)
430
if line.startswith(b'*** '):
371
if line.startswith('*** '):
432
if line.startswith(b'#'):
373
if line.startswith('#'):
434
375
elif orig_range > 0:
435
if line.startswith(b'-') or line.startswith(b' '):
376
if line.startswith('-') or line.startswith(' '):
437
elif line.startswith(b'--- ') or regex.match(line):
378
elif line.startswith('--- ') or regex.match(line):
438
379
if allow_dirty and beginning:
439
380
# Patches can have "junk" at the beginning
440
381
# Stripping junk from the end of patches is handled when we
490
431
:kwarg keep_dirty: If True, returns a dict of patches with dirty headers.
493
435
for patch_lines in iter_file_patch(iter_lines, allow_dirty, keep_dirty):
494
436
if 'dirty_head' in patch_lines:
495
yield ({'patch': parse_patch(patch_lines['saved_lines'], allow_dirty),
496
'dirty_head': patch_lines['dirty_head']})
437
patches.append({'patch': parse_patch(
438
patch_lines['saved_lines'], allow_dirty),
439
'dirty_head': patch_lines['dirty_head']})
498
yield parse_patch(patch_lines, allow_dirty)
441
patches.append(parse_patch(patch_lines, allow_dirty))
501
445
def difference_index(atext, btext):
539
483
orig_lines = iter(orig_lines)
540
484
for hunk in hunks:
541
485
while line_no < hunk.orig_pos:
542
orig_line = next(orig_lines)
486
orig_line = orig_lines.next()
545
489
for hunk_line in hunk.lines:
546
seen_patch.append(hunk_line.contents)
490
seen_patch.append(str(hunk_line))
547
491
if isinstance(hunk_line, InsertLine):
548
492
yield hunk_line.contents
549
493
elif isinstance(hunk_line, (ContextLine, RemoveLine)):
550
orig_line = next(orig_lines)
494
orig_line = orig_lines.next()
551
495
if orig_line != hunk_line.contents:
552
raise PatchConflict(line_no, orig_line,
553
b''.join(seen_patch))
496
raise PatchConflict(line_no, orig_line, "".join(seen_patch))
554
497
if isinstance(hunk_line, ContextLine):
560
503
if orig_lines is not None:
561
504
for line in orig_lines:
565
def apply_patches(tt, patches, prefix=1):
566
"""Apply patches to a TreeTransform.
568
:param tt: TreeTransform instance
569
:param patches: List of patches
570
:param prefix: Number leading path segments to strip
573
return '/'.join(p.split('/')[1:])
575
from breezy.bzr.generate_ids import gen_file_id
576
# TODO(jelmer): Extract and set mode
577
for patch in patches:
578
if patch.oldname == b'/dev/null':
582
oldname = strip_prefix(patch.oldname.decode())
583
trans_id = tt.trans_id_tree_path(oldname)
584
orig_contents = tt._tree.get_file_text(oldname)
585
tt.delete_contents(trans_id)
587
if patch.newname != b'/dev/null':
588
newname = strip_prefix(patch.newname.decode())
589
new_contents = iter_patched_from_hunks(
590
orig_contents.splitlines(True), patch.hunks)
592
parts = os.path.split(newname)
594
for part in parts[1:-1]:
595
trans_id = tt.new_directory(part, trans_id)
597
parts[-1], trans_id, new_contents,
598
file_id=gen_file_id(newname))
600
tt.create_file(new_contents, trans_id)
603
class AppliedPatches(object):
604
"""Context that provides access to a tree with patches applied.
607
def __init__(self, tree, patches, prefix=1):
609
self.patches = patches
613
self._tt = self.tree.preview_transform()
614
apply_patches(self._tt, self.patches, prefix=self.prefix)
615
return self._tt.get_preview_tree()
617
def __exit__(self, exc_type, exc_value, exc_tb):