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,
148
"""Shortcut for showing the diff to the working tree.
154
None for each, or otherwise the old revision to compare against.
156
The more general form is show_diff_trees(), where the caller
157
supplies any two trees.
68
def show_diff(b, revision, specific_files):
161
71
if revision == None:
162
72
old_tree = b.basis_tree()
164
74
old_tree = b.revision_tree(b.lookup_revision(revision))
166
if revision2 == None:
167
new_tree = b.working_tree()
169
new_tree = b.revision_tree(b.lookup_revision(revision2))
171
show_diff_trees(old_tree, new_tree, sys.stdout, specific_files,
172
external_diff_options)
176
def show_diff_trees(old_tree, new_tree, to_file, specific_files=None,
177
external_diff_options=None):
178
"""Show in text form the changes from one tree to another.
181
If set, include only changes to these files.
183
external_diff_options
184
If set, use an external GNU diff and pass these options.
76
new_tree = b.working_tree()
187
78
# TODO: Options to control putting on a prefix or suffix, perhaps as a format string
196
87
# TODO: Generation of pseudo-diffs for added/deleted files could
197
88
# be usefully made into a much faster special case.
199
if external_diff_options:
200
assert isinstance(external_diff_options, basestring)
201
opts = external_diff_options.split()
202
def diff_file(olab, olines, nlab, nlines, to_file):
203
external_diff(olab, olines, nlab, nlines, to_file, opts)
205
diff_file = internal_diff
208
90
delta = compare_trees(old_tree, new_tree, want_unchanged=False,
209
91
specific_files=specific_files)
211
93
for path, file_id, kind in delta.removed:
212
print >>to_file, '*** removed %s %r' % (kind, path)
94
print '*** removed %s %r' % (kind, path)
213
95
if kind == 'file':
214
diff_file(old_label + path,
215
old_tree.get_file(file_id).readlines(),
96
_diff_one(old_tree.get_file(file_id).readlines(),
99
fromfile=old_label + path,
220
102
for path, file_id, kind in delta.added:
221
print >>to_file, '*** added %s %r' % (kind, path)
103
print '*** added %s %r' % (kind, path)
222
104
if kind == 'file':
226
new_tree.get_file(file_id).readlines(),
106
new_tree.get_file(file_id).readlines(),
109
tofile=new_label + path)
229
111
for old_path, new_path, file_id, kind, text_modified in delta.renamed:
230
print >>to_file, '*** renamed %s %r => %r' % (kind, old_path, new_path)
112
print '*** renamed %s %r => %r' % (kind, old_path, new_path)
231
113
if text_modified:
232
diff_file(old_label + old_path,
233
old_tree.get_file(file_id).readlines(),
234
new_label + new_path,
235
new_tree.get_file(file_id).readlines(),
114
_diff_one(old_tree.get_file(file_id).readlines(),
115
new_tree.get_file(file_id).readlines(),
117
fromfile=old_label + old_path,
118
tofile=new_label + new_path)
238
120
for path, file_id, kind in delta.modified:
239
print >>to_file, '*** modified %s %r' % (kind, path)
121
print '*** modified %s %r' % (kind, path)
240
122
if kind == 'file':
241
diff_file(old_label + path,
242
old_tree.get_file(file_id).readlines(),
244
new_tree.get_file(file_id).readlines(),
123
_diff_one(old_tree.get_file(file_id).readlines(),
124
new_tree.get_file(file_id).readlines(),
126
fromfile=old_label + path,
127
tofile=new_label + path)
132
"""Describes changes from one tree to another.
141
(oldpath, newpath, id, kind, text_modified)
147
Each id is listed only once.
149
Files that are both modified and renamed are listed only in
150
renamed, with the text_modified flag true.
152
The lists are normally sorted when the delta is created.
162
def touches_file_id(self, file_id):
163
"""Return True if file_id is modified by this delta."""
164
for l in self.added, self.removed, self.modified:
168
for v in self.renamed:
174
def show(self, to_file, show_ids=False, show_unchanged=False):
175
def show_list(files):
176
for path, fid, kind in files:
177
if kind == 'directory':
179
elif kind == 'symlink':
183
print >>to_file, ' %-30s %s' % (path, fid)
185
print >>to_file, ' ', path
188
print >>to_file, 'removed:'
189
show_list(self.removed)
192
print >>to_file, 'added:'
193
show_list(self.added)
196
print >>to_file, 'renamed:'
197
for oldpath, newpath, fid, kind, text_modified in self.renamed:
199
print >>to_file, ' %s => %s %s' % (oldpath, newpath, fid)
201
print >>to_file, ' %s => %s' % (oldpath, newpath)
204
print >>to_file, 'modified:'
205
show_list(self.modified)
207
if show_unchanged and self.unchanged:
208
print >>to_file, 'unchanged:'
209
show_list(self.unchanged)
213
def compare_trees(old_tree, new_tree, want_unchanged, specific_files=None):
214
"""Describe changes from one tree to another.
216
Returns a TreeDelta with details of added, modified, renamed, and
219
The root entry is specifically exempt.
221
This only considers versioned files.
224
If true, also list files unchanged from one version to
228
If true, only check for changes to specified names or
232
from osutils import is_inside_any
234
old_inv = old_tree.inventory
235
new_inv = new_tree.inventory
237
mutter('start compare_trees')
239
# TODO: match for specific files can be rather smarter by finding
240
# the IDs of those files up front and then considering only that.
242
for file_id in old_tree:
243
if file_id in new_tree:
244
kind = old_inv.get_file_kind(file_id)
245
assert kind == new_inv.get_file_kind(file_id)
247
assert kind in ('file', 'directory', 'symlink', 'root_directory'), \
248
'invalid file kind %r' % kind
250
if kind == 'root_directory':
253
old_path = old_inv.id2path(file_id)
254
new_path = new_inv.id2path(file_id)
257
if (not is_inside_any(specific_files, old_path)
258
and not is_inside_any(specific_files, new_path)):
262
old_sha1 = old_tree.get_file_sha1(file_id)
263
new_sha1 = new_tree.get_file_sha1(file_id)
264
text_modified = (old_sha1 != new_sha1)
266
## mutter("no text to check for %r %r" % (file_id, kind))
267
text_modified = False
269
# TODO: Can possibly avoid calculating path strings if the
270
# two files are unchanged and their names and parents are
271
# the same and the parents are unchanged all the way up.
272
# May not be worthwhile.
274
if old_path != new_path:
275
delta.renamed.append((old_path, new_path, file_id, kind,
278
delta.modified.append((new_path, file_id, kind))
280
delta.unchanged.append((new_path, file_id, kind))
282
old_path = old_inv.id2path(file_id)
284
if not is_inside_any(specific_files, old_path):
286
delta.removed.append((old_path, file_id, kind))
288
mutter('start looking for new files')
289
for file_id in new_inv:
290
if file_id in old_inv:
292
new_path = new_inv.id2path(file_id)
294
if not is_inside_any(specific_files, new_path):
296
kind = new_inv.get_file_kind(file_id)
297
delta.added.append((new_path, file_id, kind))
302
delta.modified.sort()
303
delta.unchanged.sort()