55
60
ud[2] = ud[2].replace('+1,0', '+0,0')
59
if not line.endswith('\n'):
60
to_file.write("\n\\ No newline at end of file\n")
62
to_file.writelines(ud)
64
print >>to_file, "\\ No newline at end of file"
66
def external_diff(old_label, oldlines, new_label, newlines, to_file,
68
"""Display a diff by calling out to the external diff program."""
71
if to_file != sys.stdout:
72
raise NotImplementedError("sorry, can't send external diff other than to stdout yet",
75
# make sure our own output is properly ordered before the diff
78
from tempfile import NamedTemporaryFile
81
oldtmpf = NamedTemporaryFile()
82
newtmpf = NamedTemporaryFile()
85
# TODO: perhaps a special case for comparing to or from the empty
86
# sequence; can just use /dev/null on Unix
88
# TODO: if either of the files being compared already exists as a
89
# regular named file (e.g. in the working directory) then we can
90
# compare directly to that, rather than copying it.
92
oldtmpf.writelines(oldlines)
93
newtmpf.writelines(newlines)
101
'--label', old_label,
103
'--label', new_label,
106
# diff only allows one style to be specified; they don't override.
107
# note that some of these take optargs, and the optargs can be
108
# directly appended to the options.
109
# this is only an approximate parser; it doesn't properly understand
111
for s in ['-c', '-u', '-C', '-U',
116
'-y', '--side-by-side',
128
diffcmd.extend(diff_opts)
130
rc = os.spawnvp(os.P_WAIT, 'diff', diffcmd)
132
if rc != 0 and rc != 1:
133
# returns 1 if files differ; that's OK
135
msg = 'signal %d' % (-rc)
137
msg = 'exit code %d' % rc
139
raise BzrError('external diff failed with %s; command: %r' % (rc, diffcmd))
141
oldtmpf.close() # and delete
146
def show_diff(b, revision, specific_files, external_diff_options=None):
147
"""Shortcut for showing the diff to the working tree.
153
None for each, or otherwise the old revision to compare against.
155
The more general form is show_diff_trees(), where the caller
156
supplies any two trees.
69
def show_diff(b, revision, specific_files):
160
72
if revision == None:
192
99
# TODO: Generation of pseudo-diffs for added/deleted files could
193
100
# be usefully made into a much faster special case.
195
if external_diff_options:
196
assert isinstance(external_diff_options, basestring)
197
opts = external_diff_options.split()
198
def diff_file(olab, olines, nlab, nlines, to_file):
199
external_diff(olab, olines, nlab, nlines, to_file, opts)
201
diff_file = internal_diff
204
102
delta = compare_trees(old_tree, new_tree, want_unchanged=False,
205
103
specific_files=specific_files)
207
105
for path, file_id, kind in delta.removed:
208
print >>to_file, '*** removed %s %r' % (kind, path)
106
print '*** removed %s %r' % (kind, path)
209
107
if kind == 'file':
210
diff_file(old_label + path,
211
old_tree.get_file(file_id).readlines(),
108
_diff_one(old_tree.get_file(file_id).readlines(),
111
fromfile=old_label + path,
216
114
for path, file_id, kind in delta.added:
217
print >>to_file, '*** added %s %r' % (kind, path)
115
print '*** added %s %r' % (kind, path)
218
116
if kind == 'file':
222
new_tree.get_file(file_id).readlines(),
118
new_tree.get_file(file_id).readlines(),
121
tofile=new_label + path)
225
123
for old_path, new_path, file_id, kind, text_modified in delta.renamed:
226
print >>to_file, '*** renamed %s %r => %r' % (kind, old_path, new_path)
124
print '*** renamed %s %r => %r' % (kind, old_path, new_path)
227
125
if text_modified:
228
diff_file(old_label + old_path,
229
old_tree.get_file(file_id).readlines(),
230
new_label + new_path,
231
new_tree.get_file(file_id).readlines(),
126
_diff_one(old_tree.get_file(file_id).readlines(),
127
new_tree.get_file(file_id).readlines(),
129
fromfile=old_label + old_path,
130
tofile=new_label + new_path)
234
132
for path, file_id, kind in delta.modified:
235
print >>to_file, '*** modified %s %r' % (kind, path)
133
print '*** modified %s %r' % (kind, path)
236
134
if kind == 'file':
237
diff_file(old_label + path,
238
old_tree.get_file(file_id).readlines(),
240
new_tree.get_file(file_id).readlines(),
135
_diff_one(old_tree.get_file(file_id).readlines(),
136
new_tree.get_file(file_id).readlines(),
138
fromfile=old_label + path,
139
tofile=new_label + path)
143
class TreeDelta(object):
144
"""Describes changes from one tree to another.
153
(oldpath, newpath, id, kind, text_modified)
159
Each id is listed only once.
161
Files that are both modified and renamed are listed only in
162
renamed, with the text_modified flag true.
164
The lists are normally sorted when the delta is created.
174
def touches_file_id(self, file_id):
175
"""Return True if file_id is modified by this delta."""
176
for l in self.added, self.removed, self.modified:
180
for v in self.renamed:
186
def show(self, to_file, show_ids=False, show_unchanged=False):
187
def show_list(files):
188
for path, fid, kind in files:
189
if kind == 'directory':
191
elif kind == 'symlink':
195
print >>to_file, ' %-30s %s' % (path, fid)
197
print >>to_file, ' ', path
200
print >>to_file, 'removed:'
201
show_list(self.removed)
204
print >>to_file, 'added:'
205
show_list(self.added)
208
print >>to_file, 'renamed:'
209
for oldpath, newpath, fid, kind, text_modified in self.renamed:
211
print >>to_file, ' %s => %s %s' % (oldpath, newpath, fid)
213
print >>to_file, ' %s => %s' % (oldpath, newpath)
216
print >>to_file, 'modified:'
217
show_list(self.modified)
219
if show_unchanged and self.unchanged:
220
print >>to_file, 'unchanged:'
221
show_list(self.unchanged)
225
def compare_trees(old_tree, new_tree, want_unchanged, specific_files=None):
226
"""Describe changes from one tree to another.
228
Returns a TreeDelta with details of added, modified, renamed, and
231
The root entry is specifically exempt.
233
This only considers versioned files.
236
If true, also list files unchanged from one version to
240
If true, only check for changes to specified names or
244
from osutils import is_inside_any
246
old_inv = old_tree.inventory
247
new_inv = new_tree.inventory
249
mutter('start compare_trees')
251
# TODO: match for specific files can be rather smarter by finding
252
# the IDs of those files up front and then considering only that.
254
for file_id in old_tree:
255
if file_id in new_tree:
256
kind = old_inv.get_file_kind(file_id)
257
assert kind == new_inv.get_file_kind(file_id)
259
assert kind in ('file', 'directory', 'symlink', 'root_directory'), \
260
'invalid file kind %r' % kind
262
if kind == 'root_directory':
265
old_path = old_inv.id2path(file_id)
266
new_path = new_inv.id2path(file_id)
269
if (not is_inside_any(specific_files, old_path)
270
and not is_inside_any(specific_files, new_path)):
274
old_sha1 = old_tree.get_file_sha1(file_id)
275
new_sha1 = new_tree.get_file_sha1(file_id)
276
text_modified = (old_sha1 != new_sha1)
278
## mutter("no text to check for %r %r" % (file_id, kind))
279
text_modified = False
281
# TODO: Can possibly avoid calculating path strings if the
282
# two files are unchanged and their names and parents are
283
# the same and the parents are unchanged all the way up.
284
# May not be worthwhile.
286
if old_path != new_path:
287
delta.renamed.append((old_path, new_path, file_id, kind,
290
delta.modified.append((new_path, file_id, kind))
292
delta.unchanged.append((new_path, file_id, kind))
294
old_path = old_inv.id2path(file_id)
296
if not is_inside_any(specific_files, old_path):
298
delta.removed.append((old_path, file_id, kind))
300
mutter('start looking for new files')
301
for file_id in new_inv:
302
if file_id in old_inv:
304
new_path = new_inv.id2path(file_id)
306
if not is_inside_any(specific_files, new_path):
308
kind = new_inv.get_file_kind(file_id)
309
delta.added.append((new_path, file_id, kind))
314
delta.modified.sort()
315
delta.unchanged.sort()