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):
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.
70
def show_diff(b, revision, specific_files):
160
73
if revision == None:
192
89
# TODO: Generation of pseudo-diffs for added/deleted files could
193
90
# 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
92
delta = compare_trees(old_tree, new_tree, want_unchanged=False,
205
93
specific_files=specific_files)
207
95
for path, file_id, kind in delta.removed:
208
print >>to_file, '*** removed %s %r' % (kind, path)
96
print '*** removed %s %r' % (kind, path)
209
97
if kind == 'file':
210
diff_file(old_label + path,
211
old_tree.get_file(file_id).readlines(),
98
_diff_one(old_tree.get_file(file_id).readlines(),
101
fromfile=old_label + path,
216
104
for path, file_id, kind in delta.added:
217
print >>to_file, '*** added %s %r' % (kind, path)
105
print '*** added %s %r' % (kind, path)
218
106
if kind == 'file':
222
new_tree.get_file(file_id).readlines(),
108
new_tree.get_file(file_id).readlines(),
111
tofile=new_label + path)
225
113
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)
114
print '*** renamed %s %r => %r' % (kind, old_path, new_path)
227
115
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(),
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)
234
122
for path, file_id, kind in delta.modified:
235
print >>to_file, '*** modified %s %r' % (kind, path)
123
print '*** modified %s %r' % (kind, path)
236
124
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(),
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.
164
def touches_file_id(self, file_id):
165
"""Return True if file_id is modified by this delta."""
166
for l in self.added, self.removed, self.modified:
170
for v in self.renamed:
176
def show(self, to_file, show_ids=False, show_unchanged=False):
177
def show_list(files):
178
for path, fid, kind in files:
179
if kind == 'directory':
181
elif kind == 'symlink':
185
print >>to_file, ' %-30s %s' % (path, fid)
187
print >>to_file, ' ', path
190
print >>to_file, 'removed:'
191
show_list(self.removed)
194
print >>to_file, 'added:'
195
show_list(self.added)
198
print >>to_file, 'renamed:'
199
for oldpath, newpath, fid, kind, text_modified in self.renamed:
201
print >>to_file, ' %s => %s %s' % (oldpath, newpath, fid)
203
print >>to_file, ' %s => %s' % (oldpath, newpath)
206
print >>to_file, 'modified:'
207
show_list(self.modified)
209
if show_unchanged and self.unchanged:
210
print >>to_file, 'unchanged:'
211
show_list(self.unchanged)
215
def compare_trees(old_tree, new_tree, want_unchanged, specific_files=None):
216
"""Describe changes from one tree to another.
218
Returns a TreeDelta with details of added, modified, renamed, and
221
The root entry is specifically exempt.
223
This only considers versioned files.
226
If true, also list files unchanged from one version to
230
If true, only check for changes to specified names or
234
from osutils import is_inside_any
236
old_inv = old_tree.inventory
237
new_inv = new_tree.inventory
239
mutter('start compare_trees')
241
# TODO: match for specific files can be rather smarter by finding
242
# the IDs of those files up front and then considering only that.
244
for file_id in old_tree:
245
if file_id in new_tree:
246
kind = old_inv.get_file_kind(file_id)
247
assert kind == new_inv.get_file_kind(file_id)
249
assert kind in ('file', 'directory', 'symlink', 'root_directory'), \
250
'invalid file kind %r' % kind
252
if kind == 'root_directory':
255
old_path = old_inv.id2path(file_id)
256
new_path = new_inv.id2path(file_id)
259
if (not is_inside_any(specific_files, old_path)
260
and not is_inside_any(specific_files, new_path)):
264
old_sha1 = old_tree.get_file_sha1(file_id)
265
new_sha1 = new_tree.get_file_sha1(file_id)
266
text_modified = (old_sha1 != new_sha1)
268
## mutter("no text to check for %r %r" % (file_id, kind))
269
text_modified = False
271
# TODO: Can possibly avoid calculating path strings if the
272
# two files are unchanged and their names and parents are
273
# the same and the parents are unchanged all the way up.
274
# May not be worthwhile.
276
if old_path != new_path:
277
delta.renamed.append((old_path, new_path, file_id, kind,
280
delta.modified.append((new_path, file_id, kind))
282
delta.unchanged.append((new_path, file_id, kind))
284
old_path = old_inv.id2path(file_id)
286
if not is_inside_any(specific_files, old_path):
288
delta.removed.append((old_path, file_id, kind))
290
mutter('start looking for new files')
291
for file_id in new_inv:
292
if file_id in old_inv:
294
new_path = new_inv.id2path(file_id)
296
if not is_inside_any(specific_files, new_path):
298
kind = new_inv.get_file_kind(file_id)
299
delta.added.append((new_path, file_id, kind))
304
delta.modified.sort()
305
delta.unchanged.sort()