55
62
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")
64
to_file.writelines(ud)
66
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.
70
def show_diff(b, revision, specific_files):
161
73
if revision == None:
162
74
old_tree = b.basis_tree()
164
76
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.
78
new_tree = b.working_tree()
187
80
# TODO: Options to control putting on a prefix or suffix, perhaps as a format string
196
89
# TODO: Generation of pseudo-diffs for added/deleted files could
197
90
# 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
92
delta = compare_trees(old_tree, new_tree, want_unchanged=False,
209
93
specific_files=specific_files)
211
95
for path, file_id, kind in delta.removed:
212
print >>to_file, '*** removed %s %r' % (kind, path)
96
print '*** removed %s %r' % (kind, path)
213
97
if kind == 'file':
214
diff_file(old_label + path,
215
old_tree.get_file(file_id).readlines(),
98
_diff_one(old_tree.get_file(file_id).readlines(),
101
fromfile=old_label + path,
220
104
for path, file_id, kind in delta.added:
221
print >>to_file, '*** added %s %r' % (kind, path)
105
print '*** added %s %r' % (kind, path)
222
106
if kind == 'file':
226
new_tree.get_file(file_id).readlines(),
108
new_tree.get_file(file_id).readlines(),
111
tofile=new_label + path)
229
113
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)
114
print '*** renamed %s %r => %r' % (kind, old_path, new_path)
231
115
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(),
116
_diff_one(old_tree.get_file(file_id).readlines(),
117
new_tree.get_file(file_id).readlines(),
119
fromfile=old_label + old_path,
120
tofile=new_label + new_path)
238
122
for path, file_id, kind in delta.modified:
239
print >>to_file, '*** modified %s %r' % (kind, path)
123
print '*** modified %s %r' % (kind, path)
240
124
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(),
125
_diff_one(old_tree.get_file(file_id).readlines(),
126
new_tree.get_file(file_id).readlines(),
128
fromfile=old_label + path,
129
tofile=new_label + path)
134
"""Describes changes from one tree to another.
143
(oldpath, newpath, id, kind, text_modified)
149
Each id is listed only once.
151
Files that are both modified and renamed are listed only in
152
renamed, with the text_modified flag true.
154
The lists are normally sorted when the delta is created.
163
def show(self, to_file, show_ids=False, show_unchanged=False):
164
def show_list(files):
165
for path, fid, kind in files:
166
if kind == 'directory':
168
elif kind == 'symlink':
172
print >>to_file, ' %-30s %s' % (path, fid)
174
print >>to_file, ' ', path
177
print >>to_file, 'removed:'
178
show_list(self.removed)
181
print >>to_file, 'added:'
182
show_list(self.added)
185
print >>to_file, 'renamed:'
186
for oldpath, newpath, fid, kind, text_modified in self.renamed:
188
print >>to_file, ' %s => %s %s' % (oldpath, newpath, fid)
190
print >>to_file, ' %s => %s' % (oldpath, newpath)
193
print >>to_file, 'modified:'
194
show_list(self.modified)
196
if show_unchanged and self.unchanged:
197
print >>to_file, 'unchanged:'
198
show_list(self.unchanged)
202
def compare_trees(old_tree, new_tree, want_unchanged, specific_files=None):
203
"""Describe changes from one tree to another.
205
Returns a TreeDelta with details of added, modified, renamed, and
208
The root entry is specifically exempt.
210
This only considers versioned files.
213
If true, also list files unchanged from one version to the next.
216
If true, only check for changes to specified files.
218
old_inv = old_tree.inventory
219
new_inv = new_tree.inventory
221
mutter('start compare_trees')
224
specific_files = ImmutableSet(specific_files)
226
for file_id in old_tree:
227
if file_id in new_tree:
228
kind = old_inv.get_file_kind(file_id)
229
assert kind == new_inv.get_file_kind(file_id)
231
assert kind in ('file', 'directory', 'symlink', 'root_directory'), \
232
'invalid file kind %r' % kind
234
if kind == 'root_directory':
237
old_path = old_inv.id2path(file_id)
238
new_path = new_inv.id2path(file_id)
241
if (old_path not in specific_files
242
and new_path not in specific_files):
246
old_sha1 = old_tree.get_file_sha1(file_id)
247
new_sha1 = new_tree.get_file_sha1(file_id)
248
text_modified = (old_sha1 != new_sha1)
250
## mutter("no text to check for %r %r" % (file_id, kind))
251
text_modified = False
253
# TODO: Can possibly avoid calculating path strings if the
254
# two files are unchanged and their names and parents are
255
# the same and the parents are unchanged all the way up.
256
# May not be worthwhile.
258
if old_path != new_path:
259
delta.renamed.append((old_path, new_path, file_id, kind,
262
delta.modified.append((new_path, file_id, kind))
264
delta.unchanged.append((new_path, file_id, kind))
266
delta.removed.append((old_inv.id2path(file_id), file_id, kind))
268
mutter('start looking for new files')
269
for file_id in new_inv:
270
if file_id in old_inv:
272
new_path = new_inv.id2path(file_id)
274
if new_path not in specific_files:
276
kind = new_inv.get_file_kind(file_id)
277
delta.added.append((new_path, file_id, kind))
282
delta.modified.sort()
283
delta.unchanged.sort()