85
84
match = re.match(binary_files_re, line)
86
85
if match is not None:
87
86
raise BinaryFiles(match.group(1), match.group(2))
88
if not line.startswith(b"--- "):
87
if not line.startswith("--- "):
89
88
raise MalformedPatchHeader("No orig name", line)
91
orig_name = line[4:].rstrip(b"\n")
90
orig_name = line[4:].rstrip("\n")
92
91
except StopIteration:
93
92
raise MalformedPatchHeader("No orig line", "")
95
94
line = next(iter_lines)
96
if not line.startswith(b"+++ "):
95
if not line.startswith("+++ "):
97
96
raise PatchSyntax("No mod name")
99
mod_name = line[4:].rstrip(b"\n")
98
mod_name = line[4:].rstrip("\n")
100
99
except StopIteration:
101
100
raise MalformedPatchHeader("No mod line", "")
102
101
return (orig_name, mod_name)
124
123
def hunk_from_header(line):
126
matches = re.match(br'\@\@ ([^@]*) \@\@( (.*))?\n', line)
125
matches = re.match(r'\@\@ ([^@]*) \@\@( (.*))?\n', line)
127
126
if matches is None:
128
127
raise MalformedHunkHeader("Does not match format.", line)
130
(orig, mod) = matches.group(1).split(b" ")
129
(orig, mod) = matches.group(1).split(" ")
131
130
except (ValueError, IndexError) as e:
132
131
raise MalformedHunkHeader(str(e), line)
133
if not orig.startswith(b'-') or not mod.startswith(b'+'):
132
if not orig.startswith('-') or not mod.startswith('+'):
134
133
raise MalformedHunkHeader("Positions don't start with + or -.", line)
136
135
(orig_pos, orig_range) = parse_range(orig[1:])
143
142
return Hunk(orig_pos, orig_range, mod_pos, mod_range, tail)
146
class HunkLine(object):
148
146
def __init__(self, contents):
149
147
self.contents = contents
151
149
def get_str(self, leadchar):
152
if self.contents == b"\n" and leadchar == b" " and False:
154
if not self.contents.endswith(b'\n'):
155
terminator = b'\n' + NO_NL
150
if self.contents == "\n" and leadchar == " " and False:
152
if not self.contents.endswith('\n'):
153
terminator = '\n' + NO_NL
158
156
return leadchar + self.contents + terminator
161
raise NotImplementedError
164
159
class ContextLine(HunkLine):
166
160
def __init__(self, contents):
167
161
HunkLine.__init__(self, contents)
170
return self.get_str(b" ")
164
return self.get_str(" ")
173
167
class InsertLine(HunkLine):
174
168
def __init__(self, contents):
175
169
HunkLine.__init__(self, contents)
178
return self.get_str(b"+")
172
return self.get_str("+")
181
175
class RemoveLine(HunkLine):
182
176
def __init__(self, contents):
183
177
HunkLine.__init__(self, contents)
186
return self.get_str(b"-")
189
NO_NL = b'\\ No newline at end of file\n'
190
__pychecker__ = "no-returnvalues"
180
return self.get_str("-")
182
NO_NL = '\\ No newline at end of file\n'
183
__pychecker__="no-returnvalues"
193
185
def parse_line(line):
194
if line.startswith(b"\n"):
186
if line.startswith("\n"):
195
187
return ContextLine(line)
196
elif line.startswith(b" "):
188
elif line.startswith(" "):
197
189
return ContextLine(line[1:])
198
elif line.startswith(b"+"):
190
elif line.startswith("+"):
199
191
return InsertLine(line[1:])
200
elif line.startswith(b"-"):
192
elif line.startswith("-"):
201
193
return RemoveLine(line[1:])
203
195
raise MalformedLine("Unknown line type", line)
211
200
def __init__(self, orig_pos, orig_range, mod_pos, mod_range, tail=None):
212
201
self.orig_pos = orig_pos
213
202
self.orig_range = orig_range
219
208
def get_header(self):
220
209
if self.tail is None:
223
tail_str = b' ' + self.tail
224
return b"@@ -%s +%s @@%s\n" % (self.range_str(self.orig_pos,
226
self.range_str(self.mod_pos,
212
tail_str = ' ' + self.tail
213
return "@@ -%s +%s @@%s\n" % (self.range_str(self.orig_pos,
215
self.range_str(self.mod_pos,
230
219
def range_str(self, pos, range):
231
220
"""Return a file range, special-casing for 1-line files.
237
226
:return: a string in the format 1,4 except when range == pos == 1
242
return b"%i,%i" % (pos, range)
231
return "%i,%i" % (pos, range)
245
234
lines = [self.get_header()]
246
235
for line in self.lines:
247
lines.append(line.as_bytes())
248
return b"".join(lines)
236
lines.append(str(line))
237
return "".join(lines)
252
239
def shift_to_mod(self, pos):
253
if pos < self.orig_pos - 1:
240
if pos < self.orig_pos-1:
255
elif pos > self.orig_pos + self.orig_range:
242
elif pos > self.orig_pos+self.orig_range:
256
243
return self.mod_range - self.orig_range
258
245
return self.shift_to_mod_lines(pos)
260
247
def shift_to_mod_lines(self, pos):
261
position = self.orig_pos - 1
248
position = self.orig_pos-1
263
250
for line in self.lines:
264
251
if isinstance(line, InsertLine):
316
303
class BinaryPatch(object):
318
304
def __init__(self, oldname, newname):
319
305
self.oldname = oldname
320
306
self.newname = newname
323
return b'Binary files %s and %s differ\n' % (self.oldname, self.newname)
309
return 'Binary files %s and %s differ\n' % (self.oldname, self.newname)
326
312
class Patch(BinaryPatch):
329
315
BinaryPatch.__init__(self, oldname, newname)
333
319
ret = self.get_header()
334
ret += b"".join([h.as_bytes() for h in self.hunks])
320
ret += "".join([str(h) for h in self.hunks])
337
323
def get_header(self):
338
return b"--- %s\n+++ %s\n" % (self.oldname, self.newname)
324
return "--- %s\n+++ %s\n" % (self.oldname, self.newname)
340
326
def stats_values(self):
341
327
"""Calculate the number of inserts and removes."""
406
391
first patch are stripped away in iter_hunks() if it is also passed
407
392
allow_dirty=True. Default False.
409
# FIXME: Docstring is not quite true. We allow certain comments no
394
### FIXME: Docstring is not quite true. We allow certain comments no
410
395
# matter what, If they startwith '===', '***', or '#' Someone should
411
396
# reexamine this logic and decide if we should include those in
412
397
# allow_dirty or restrict those to only being before the patch is found
430
415
dirty_head.append(line)
432
if line.startswith(b'*** '):
417
if line.startswith('*** '):
434
if line.startswith(b'#'):
419
if line.startswith('#'):
436
421
elif orig_range > 0:
437
if line.startswith(b'-') or line.startswith(b' '):
422
if line.startswith('-') or line.startswith(' '):
439
elif line.startswith(b'--- ') or regex.match(line):
424
elif line.startswith('--- ') or regex.match(line):
440
425
if allow_dirty and beginning:
441
426
# Patches can have "junk" at the beginning
442
427
# Stripping junk from the end of patches is handled when we
492
477
:kwarg keep_dirty: If True, returns a dict of patches with dirty headers.
495
481
for patch_lines in iter_file_patch(iter_lines, allow_dirty, keep_dirty):
496
482
if 'dirty_head' in patch_lines:
497
yield ({'patch': parse_patch(patch_lines['saved_lines'], allow_dirty),
498
'dirty_head': patch_lines['dirty_head']})
483
patches.append({'patch': parse_patch(
484
patch_lines['saved_lines'], allow_dirty),
485
'dirty_head': patch_lines['dirty_head']})
500
yield parse_patch(patch_lines, allow_dirty)
487
patches.append(parse_patch(patch_lines, allow_dirty))
503
491
def difference_index(atext, btext):
547
535
for hunk_line in hunk.lines:
548
seen_patch.append(hunk_line.contents)
536
seen_patch.append(str(hunk_line))
549
537
if isinstance(hunk_line, InsertLine):
550
538
yield hunk_line.contents
551
539
elif isinstance(hunk_line, (ContextLine, RemoveLine)):
552
540
orig_line = next(orig_lines)
553
541
if orig_line != hunk_line.contents:
554
raise PatchConflict(line_no, orig_line,
555
b''.join(seen_patch))
542
raise PatchConflict(line_no, orig_line, "".join(seen_patch))
556
543
if isinstance(hunk_line, ContextLine):
562
549
if orig_lines is not None:
563
550
for line in orig_lines:
567
def apply_patches(tt, patches, prefix=1):
568
"""Apply patches to a TreeTransform.
570
:param tt: TreeTransform instance
571
:param patches: List of patches
572
:param prefix: Number leading path segments to strip
575
return '/'.join(p.split('/')[1:])
577
from breezy.bzr.generate_ids import gen_file_id
578
# TODO(jelmer): Extract and set mode
579
for patch in patches:
580
if patch.oldname == b'/dev/null':
584
oldname = strip_prefix(patch.oldname.decode())
585
trans_id = tt.trans_id_tree_path(oldname)
586
orig_contents = tt._tree.get_file_text(oldname)
587
tt.delete_contents(trans_id)
589
if patch.newname != b'/dev/null':
590
newname = strip_prefix(patch.newname.decode())
591
new_contents = iter_patched_from_hunks(
592
orig_contents.splitlines(True), patch.hunks)
594
parts = os.path.split(newname)
596
for part in parts[1:-1]:
597
trans_id = tt.new_directory(part, trans_id)
599
parts[-1], trans_id, new_contents,
600
file_id=gen_file_id(newname))
602
tt.create_file(new_contents, trans_id)
605
class AppliedPatches(object):
606
"""Context that provides access to a tree with patches applied.
609
def __init__(self, tree, patches, prefix=1):
611
self.patches = patches
615
from .transform import TransformPreview
616
self._tt = TransformPreview(self.tree)
617
apply_patches(self._tt, self.patches, prefix=self.prefix)
618
return self._tt.get_preview_tree()
620
def __exit__(self, exc_type, exc_value, exc_tb):