13
13
# You should have received a copy of the GNU General Public License
14
14
# along with this program; if not, write to the Free Software
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
15
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18
17
"""Commit message editor support."""
19
from __future__ import absolute_import
23
23
from subprocess import call
27
import bzrlib.config as config
28
34
from bzrlib.errors import BzrError, BadCommitMessageEncoding
29
from bzrlib.trace import warning, mutter
35
from bzrlib.hooks import Hooks
33
39
"""Return a sequence of possible editor binaries for the current platform"""
35
yield os.environ["BZR_EDITOR"]
41
yield os.environ["BZR_EDITOR"], '$BZR_EDITOR'
39
e = config.GlobalConfig().get_editor()
45
e = config.GlobalStack().get('editor')
47
yield e, config.config_filename()
43
49
for varname in 'VISUAL', 'EDITOR':
44
50
if varname in os.environ:
45
yield os.environ[varname]
51
yield os.environ[varname], '$' + varname
47
53
if sys.platform == 'win32':
48
54
for editor in 'wordpad.exe', 'notepad.exe':
51
57
for editor in ['/usr/bin/editor', 'vi', 'pico', 'nano', 'joe']:
55
61
def _run_editor(filename):
56
62
"""Try to execute an editor to edit the commit message."""
57
for e in _get_editor():
63
for candidate, candidate_source in _get_editor():
64
edargs = cmdline.split(candidate)
60
66
## mutter("trying editor: %r", (edargs +[filename]))
61
67
x = call(edargs + [filename])
63
# We're searching for an editor, so catch safe errors and continue
64
if e.errno in (errno.ENOENT, ):
69
if candidate_source is not None:
70
# We tried this editor because some user configuration (an
71
# environment variable or config file) said to try it. Let
72
# the user know their configuration is broken.
74
'Could not start editor "%s" (specified by %s): %s\n'
75
% (candidate, candidate_source, str(e)))
103
114
if not start_message is None:
104
start_message = start_message.encode(bzrlib.user_encoding)
105
return edit_commit_message_encoded(infotext.encode(bzrlib.user_encoding),
106
ignoreline, start_message)
115
start_message = start_message.encode(osutils.get_user_encoding())
116
infotext = infotext.encode(osutils.get_user_encoding(), 'replace')
117
return edit_commit_message_encoded(infotext, ignoreline, start_message)
109
120
def edit_commit_message_encoded(infotext, ignoreline=DEFAULT_IGNORE_LINE,
132
143
msgfilename, hasinfo = _create_temp_file_with_commit_template(
133
144
infotext, ignoreline, start_message)
135
if not msgfilename or not _run_editor(msgfilename):
147
basename = osutils.basename(msgfilename)
148
msg_transport = transport.get_transport_from_path(osutils.dirname(msgfilename))
149
reference_content = msg_transport.get_bytes(basename)
150
if not _run_editor(msgfilename):
152
edited_content = msg_transport.get_bytes(basename)
153
if edited_content == reference_content:
154
if not ui.ui_factory.confirm_action(
155
u"Commit message was not edited, use anyway",
156
"bzrlib.msgeditor.unchanged",
158
# Returning "" makes cmd_commit raise 'empty commit message
159
# specified' which is a reasonable error, given the user has
160
# rejected using the unedited template.
140
164
lastline, nlines = 0, 0
181
205
os.unlink(msgfilename)
182
206
except IOError, e:
183
warning("failed to unlink %s: %s; ignored", msgfilename, e)
208
"failed to unlink %s: %s; ignored", msgfilename, e)
186
211
def _create_temp_file_with_commit_template(infotext,
187
212
ignoreline=DEFAULT_IGNORE_LINE,
189
215
"""Create temp file and write commit template in it.
191
:param infotext: Text to be displayed at bottom of message
192
for the user's reference;
193
currently similar to 'bzr status'.
194
The text is already encoded.
217
:param infotext: Text to be displayed at bottom of message for the
218
user's reference; currently similar to 'bzr status'. The text is
196
221
:param ignoreline: The separator to use above the infotext.
198
:param start_message: The text to place above the separator, if any.
199
This will not be removed from the message
200
after the user has edited it.
201
The string is already encoded
223
:param start_message: The text to place above the separator, if any.
224
This will not be removed from the message after the user has edited
225
it. The string is already encoded
203
227
:return: 2-tuple (temp file name, hasinfo)
206
230
tmp_fileno, msgfilename = tempfile.mkstemp(prefix='bzr_log.',
231
dir=tmpdir, text=True)
209
232
msgfile = os.fdopen(tmp_fileno, 'w')
211
234
if start_message is not None:
235
258
from StringIO import StringIO # must be unicode-safe
236
259
from bzrlib.status import show_tree_status
237
260
status_tmp = StringIO()
238
show_tree_status(working_tree, specific_files=specific_files,
261
show_tree_status(working_tree, specific_files=specific_files,
262
to_file=status_tmp, verbose=True)
240
263
return status_tmp.getvalue()
265
288
template = template + '\n' + stream.getvalue()
293
class MessageEditorHooks(Hooks):
294
"""A dictionary mapping hook name to a list of callables for message editor
297
e.g. ['commit_message_template'] is the list of items to be called to
298
generate a commit message template
302
"""Create the default hooks.
304
These are all empty initially.
306
Hooks.__init__(self, "bzrlib.msgeditor", "hooks")
307
self.add_hook('set_commit_message',
308
"Set a fixed commit message. "
309
"set_commit_message is called with the "
310
"bzrlib.commit.Commit object (so you can also change e.g. revision "
311
"properties by editing commit.builder._revprops) and the message "
312
"so far. set_commit_message must return the message to use or None"
313
" if it should use the message editor as normal.", (2, 4))
314
self.add_hook('commit_message_template',
315
"Called when a commit message is being generated. "
316
"commit_message_template is called with the bzrlib.commit.Commit "
317
"object and the message that is known so far. "
318
"commit_message_template must return a new message to use (which "
319
"could be the same as it was given). When there are multiple "
320
"hooks registered for commit_message_template, they are chained "
321
"with the result from the first passed into the second, and so "
325
hooks = MessageEditorHooks()
328
def set_commit_message(commit, start_message=None):
329
"""Sets the commit message.
330
:param commit: Commit object for the active commit.
331
:return: The commit message or None to continue using the message editor
334
for hook in hooks['set_commit_message']:
335
start_message = hook(commit, start_message)
339
def generate_commit_message_template(commit, start_message=None):
340
"""Generate a commit message template.
342
:param commit: Commit object for the active commit.
343
:param start_message: Message to start with.
344
:return: A start commit message or None for an empty start commit message.
347
for hook in hooks['commit_message_template']:
348
start_message = hook(commit, start_message)