14
14
# You should have received a copy of the GNU General Public License
15
15
# along with this program; if not, write to the Free Software
16
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19
class PatchSyntax(Exception):
20
def __init__(self, msg):
21
Exception.__init__(self, msg)
24
class MalformedPatchHeader(PatchSyntax):
25
def __init__(self, desc, line):
28
msg = "Malformed patch header. %s\n%r" % (self.desc, self.line)
29
PatchSyntax.__init__(self, msg)
32
class MalformedHunkHeader(PatchSyntax):
33
def __init__(self, desc, line):
36
msg = "Malformed hunk header. %s\n%r" % (self.desc, self.line)
37
PatchSyntax.__init__(self, msg)
40
class MalformedLine(PatchSyntax):
41
def __init__(self, desc, line):
44
msg = "Malformed line. %s\n%s" % (self.desc, self.line)
45
PatchSyntax.__init__(self, msg)
48
class PatchConflict(Exception):
49
def __init__(self, line_no, orig_line, patch_line):
50
orig = orig_line.rstrip('\n')
51
patch = str(patch_line).rstrip('\n')
52
msg = 'Text contents mismatch at line %d. Original has "%s",'\
53
' but patch says it should be "%s"' % (line_no, orig, patch)
54
Exception.__init__(self, msg)
16
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18
from __future__ import absolute_import
20
from bzrlib.errors import (
32
binary_files_re = 'Binary files (.*) and (.*) differ\n'
57
35
def get_patch_names(iter_lines):
36
line = iter_lines.next()
59
line = iter_lines.next()
38
match = re.match(binary_files_re, line)
40
raise BinaryFiles(match.group(1), match.group(2))
60
41
if not line.startswith("--- "):
61
42
raise MalformedPatchHeader("No orig name", line)
257
class BinaryPatch(object):
265
258
def __init__(self, oldname, newname):
266
259
self.oldname = oldname
267
260
self.newname = newname
263
return 'Binary files %s and %s differ\n' % (self.oldname, self.newname)
266
class Patch(BinaryPatch):
268
def __init__(self, oldname, newname):
269
BinaryPatch.__init__(self, oldname, newname)
270
272
def __str__(self):
271
ret = self.get_header()
273
ret = self.get_header()
272
274
ret += "".join([str(h) for h in self.hunks])
275
277
def get_header(self):
276
278
return "--- %s\n+++ %s\n" % (self.oldname, self.newname)
279
"""Return a string of patch statistics"""
280
def stats_values(self):
281
"""Calculate the number of inserts and removes."""
282
284
for hunk in self.hunks:
286
288
elif isinstance(line, RemoveLine):
290
return (inserts, removes, len(self.hunks))
293
"""Return a string of patch statistics"""
288
294
return "%i inserts, %i removes in %i hunks" % \
289
(inserts, removes, len(self.hunks))
291
297
def pos_in_mod(self, position):
292
298
newpos = position
312
318
if isinstance(line, ContextLine):
316
def parse_patch(iter_lines):
317
(orig_name, mod_name) = get_patch_names(iter_lines)
318
patch = Patch(orig_name, mod_name)
319
for hunk in iter_hunks(iter_lines):
320
patch.hunks.append(hunk)
324
def iter_file_patch(iter_lines):
321
def parse_patch(iter_lines, allow_dirty=False):
323
:arg iter_lines: iterable of lines to parse
324
:kwarg allow_dirty: If True, allow the patch to have trailing junk.
327
iter_lines = iter_lines_handle_nl(iter_lines)
329
(orig_name, mod_name) = get_patch_names(iter_lines)
330
except BinaryFiles, e:
331
return BinaryPatch(e.orig_name, e.mod_name)
333
patch = Patch(orig_name, mod_name)
334
for hunk in iter_hunks(iter_lines, allow_dirty):
335
patch.hunks.append(hunk)
339
def iter_file_patch(iter_lines, allow_dirty=False, keep_dirty=False):
341
:arg iter_lines: iterable of lines to parse for patches
342
:kwarg allow_dirty: If True, allow comments and other non-patch text
343
before the first patch. Note that the algorithm here can only find
344
such text before any patches have been found. Comments after the
345
first patch are stripped away in iter_hunks() if it is also passed
346
allow_dirty=True. Default False.
348
### FIXME: Docstring is not quite true. We allow certain comments no
349
# matter what, If they startwith '===', '***', or '#' Someone should
350
# reexamine this logic and decide if we should include those in
351
# allow_dirty or restrict those to only being before the patch is found
352
# (as allow_dirty does).
353
regex = re.compile(binary_files_re)
327
359
for line in iter_lines:
328
if line.startswith('=== ') or line.startswith('*** '):
360
if line.startswith('=== '):
361
if len(saved_lines) > 0:
362
if keep_dirty and len(dirty_head) > 0:
363
yield {'saved_lines': saved_lines,
364
'dirty_head': dirty_head}
369
dirty_head.append(line)
371
if line.startswith('*** '):
330
373
if line.startswith('#'):
332
375
elif orig_range > 0:
333
376
if line.startswith('-') or line.startswith(' '):
335
elif line.startswith('--- '):
336
if len(saved_lines) > 0:
378
elif line.startswith('--- ') or regex.match(line):
379
if allow_dirty and beginning:
380
# Patches can have "junk" at the beginning
381
# Stripping junk from the end of patches is handled when we
384
elif len(saved_lines) > 0:
385
if keep_dirty and len(dirty_head) > 0:
386
yield {'saved_lines': saved_lines,
387
'dirty_head': dirty_head}
339
392
elif line.startswith('@@'):
340
393
hunk = hunk_from_header(line)
341
394
orig_range = hunk.orig_range
342
395
saved_lines.append(line)
343
396
if len(saved_lines) > 0:
397
if keep_dirty and len(dirty_head) > 0:
398
yield {'saved_lines': saved_lines,
399
'dirty_head': dirty_head}
347
404
def iter_lines_handle_nl(iter_lines):
368
def parse_patches(iter_lines):
369
iter_lines = iter_lines_handle_nl(iter_lines)
370
return [parse_patch(f.__iter__()) for f in iter_file_patch(iter_lines)]
425
def parse_patches(iter_lines, allow_dirty=False, keep_dirty=False):
427
:arg iter_lines: iterable of lines to parse for patches
428
:kwarg allow_dirty: If True, allow text that's not part of the patch at
429
selected places. This includes comments before and after a patch
430
for instance. Default False.
431
:kwarg keep_dirty: If True, returns a dict of patches with dirty headers.
435
for patch_lines in iter_file_patch(iter_lines, allow_dirty, keep_dirty):
436
if 'dirty_head' in patch_lines:
437
patches.append({'patch': parse_patch(
438
patch_lines['saved_lines'], allow_dirty),
439
'dirty_head': patch_lines['dirty_head']})
441
patches.append(parse_patch(patch_lines, allow_dirty))
373
445
def difference_index(atext, btext):