1 """Function/variables common to all the commands
5 Copyright (C) 2005, Catalin Marinas <catalin.marinas@gmail.com>
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License version 2 as
9 published by the Free Software Foundation.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 import sys, os, os.path, re
22 from optparse import OptionParser, make_option
24 from stgit.exception import *
25 from stgit.utils import *
26 from stgit.out import *
27 from stgit.run import *
28 from stgit import stack, git, basedir
29 from stgit.config import config, file_extensions
30 from stgit.lib import stack as libstack
31 from stgit.lib import git as libgit
33 # Command exception class
34 class CmdException(StgException):
39 """Parse a revision specification into its branch:patch parts.
42 branch, patch = rev.split(':', 1)
47 return (branch, patch)
49 def git_id(crt_series, rev):
52 # TODO: remove this function once all the occurrences were converted
54 repository = libstack.Repository.default()
55 return git_commit(rev, repository, crt_series.get_name()).sha1
57 def git_commit(name, repository, branch_name = None):
58 """Return the a Commit object if 'name' is a patch name or Git commit.
59 The patch names allowed are in the form '<branch>:<patch>' and can
60 be followed by standard symbols used by git-rev-parse. If <patch>
61 is '{base}', it represents the bottom of the stack.
63 # Try a [branch:]patch name first
64 branch, patch = parse_rev(name)
66 branch = branch_name or repository.current_branch_name
69 if patch.startswith('{base}'):
70 base_id = repository.get_stack(branch).base.sha1
71 return repository.rev_parse(base_id +
72 strip_prefix('{base}', patch))
74 # Other combination of branch and patch
76 return repository.rev_parse('patches/%s/%s' % (branch, patch),
77 discard_stderr = True)
78 except libgit.RepositoryException:
83 return repository.rev_parse(name, discard_stderr = True)
84 except libgit.RepositoryException:
85 raise CmdException('%s: Unknown patch or revision name' % name)
87 def check_local_changes():
88 if git.local_changes():
89 raise CmdException('local changes in the tree. Use "refresh" or'
92 def check_head_top_equal(crt_series):
93 if not crt_series.head_top_equal():
94 raise CmdException('HEAD and top are not the same. This can happen'
95 ' if you modify a branch with git. "stg repair'
96 ' --help" explains more about what to do next.')
98 def check_conflicts():
99 if git.get_conflicts():
100 raise CmdException('Unsolved conflicts. Please resolve them first'
101 ' or revert the changes with "status --reset"')
103 def print_crt_patch(crt_series, branch = None):
105 patch = crt_series.get_current()
107 patch = stack.Series(branch).get_current()
110 out.info('Now at patch "%s"' % patch)
112 out.info('No patches applied')
114 def resolved_all(reset = None):
115 conflicts = git.get_conflicts()
116 git.resolved(conflicts, reset)
118 def push_patches(crt_series, patches, check_merged = False):
119 """Push multiple patches onto the stack. This function is shared
120 between the push and pull commands
122 forwarded = crt_series.forward_patches(patches)
124 out.info('Fast-forwarded patches "%s" - "%s"'
125 % (patches[0], patches[forwarded - 1]))
127 out.info('Fast-forwarded patch "%s"' % patches[0])
129 names = patches[forwarded:]
131 # check for patches merged upstream
132 if names and check_merged:
133 out.start('Checking for patches merged upstream')
135 merged = crt_series.merged_patches(names)
137 out.done('%d found' % len(merged))
142 out.start('Pushing patch "%s"' % p)
145 crt_series.push_empty_patch(p)
146 out.done('merged upstream')
148 modified = crt_series.push_patch(p)
150 if crt_series.empty_patch(p):
151 out.done('empty patch')
157 def pop_patches(crt_series, patches, keep = False):
158 """Pop the patches in the list from the stack. It is assumed that
159 the patches are listed in the stack reverse order.
161 if len(patches) == 0:
162 out.info('Nothing to push/pop')
165 if len(patches) == 1:
166 out.start('Popping patch "%s"' % p)
168 out.start('Popping patches "%s" - "%s"' % (patches[0], p))
169 crt_series.pop_patch(p, keep)
172 def parse_patches(patch_args, patch_list, boundary = 0, ordered = False):
173 """Parse patch_args list for patch names in patch_list and return
174 a list. The names can be individual patches and/or in the
175 patch1..patch2 format.
177 # in case it receives a tuple
178 patch_list = list(patch_list)
181 for name in patch_args:
182 pair = name.split('..')
184 if p and not p in patch_list:
185 raise CmdException, 'Unknown patch name: %s' % p
191 # patch range [p1]..[p2]
194 first = patch_list.index(pair[0])
199 last = patch_list.index(pair[1]) + 1
203 # only cross the boundary if explicitly asked
205 boundary = len(patch_list)
215 last = len(patch_list)
218 pl = patch_list[first:last]
220 pl = patch_list[(last - 1):(first + 1)]
223 raise CmdException, 'Malformed patch name: %s' % name
227 raise CmdException, 'Duplicate patch name: %s' % p
232 patches = [p for p in patch_list if p in patches]
236 def name_email(address):
237 p = parse_name_email(address)
241 raise CmdException('Incorrect "name <email>"/"email (name)" string: %s'
244 def name_email_date(address):
245 p = parse_name_email_date(address)
249 raise CmdException('Incorrect "name <email> date" string: %s' % address)
251 def address_or_alias(addr_str):
252 """Return the address if it contains an e-mail address or look up
253 the aliases in the config files.
255 def __address_or_alias(addr):
258 if addr.find('@') >= 0:
259 # it's an e-mail address
261 alias = config.get('mail.alias.'+addr)
265 raise CmdException, 'unknown e-mail alias: %s' % addr
267 addr_list = [__address_or_alias(addr.strip())
268 for addr in addr_str.split(',')]
269 return ', '.join([addr for addr in addr_list if addr])
271 def prepare_rebase(crt_series):
273 applied = crt_series.get_applied()
275 out.start('Popping all applied patches')
276 crt_series.pop_patch(applied[0])
280 def rebase(crt_series, target):
282 tree_id = git_id(crt_series, target)
284 # it might be that we use a custom rebase command with its own
287 if tree_id == git.get_head():
288 out.info('Already at "%s", no need for rebasing.' % target)
291 out.start('Rebasing to "%s"' % target)
293 out.start('Rebasing to the default target')
294 git.rebase(tree_id = tree_id)
297 def post_rebase(crt_series, applied, nopush, merged):
298 # memorize that we rebased to here
299 crt_series._set_field('orig-base', git.get_head())
300 # push the patches back
302 push_patches(crt_series, applied, merged)
305 # Patch description/e-mail/diff parsing
307 def __end_descr(line):
308 return re.match('---\s*$', line) or re.match('diff -', line) or \
309 re.match('Index: ', line)
311 def __split_descr_diff(string):
312 """Return the description and the diff from the given string
317 for line in string.split('\n'):
319 if not __end_descr(line):
326 return (descr.rstrip(), diff)
328 def __parse_description(descr):
329 """Parse the patch description and return the new description and
330 author information (if any).
333 authname = authemail = authdate = None
335 descr_lines = [line.rstrip() for line in descr.split('\n')]
337 raise CmdException, "Empty patch description"
340 end = len(descr_lines)
342 # Parse the patch header
343 for pos in range(0, end):
344 if not descr_lines[pos]:
346 # check for a "From|Author:" line
347 if re.match('\s*(?:from|author):\s+', descr_lines[pos], re.I):
348 auth = re.findall('^.*?:\s+(.*)$', descr_lines[pos])[0]
349 authname, authemail = name_email(auth)
352 # check for a "Date:" line
353 if re.match('\s*date:\s+', descr_lines[pos], re.I):
354 authdate = re.findall('^.*?:\s+(.*)$', descr_lines[pos])[0]
360 subject = descr_lines[pos]
365 body = reduce(lambda x, y: x + '\n' + y, descr_lines[lasthdr:], '')
367 return (subject + body, authname, authemail, authdate)
370 """Parse the message object and return (description, authname,
371 authemail, authdate, diff)
373 from email.Header import decode_header, make_header
375 def __decode_header(header):
376 """Decode a qp-encoded e-mail header as per rfc2047"""
378 words_enc = decode_header(header)
379 hobj = make_header(words_enc)
380 except Exception, ex:
381 raise CmdException, 'header decoding error: %s' % str(ex)
382 return unicode(hobj).encode('utf-8')
385 if msg.has_key('from'):
386 authname, authemail = name_email(__decode_header(msg['from']))
388 authname = authemail = None
390 # '\n\t' can be found on multi-line headers
391 descr = __decode_header(msg['subject']).replace('\n\t', ' ')
392 authdate = msg['date']
394 # remove the '[*PATCH*]' expression in the subject
396 descr = re.findall('^(\[.*?[Pp][Aa][Tt][Cc][Hh].*?\])?\s*(.*)$',
399 raise CmdException, 'Subject: line not found'
401 # the rest of the message
403 for part in msg.walk():
404 if part.get_content_type() == 'text/plain':
405 msg_text += part.get_payload(decode = True)
407 rem_descr, diff = __split_descr_diff(msg_text)
409 descr += '\n\n' + rem_descr
411 # parse the description for author information
412 descr, descr_authname, descr_authemail, descr_authdate = \
413 __parse_description(descr)
415 authname = descr_authname
417 authemail = descr_authemail
419 authdate = descr_authdate
421 return (descr, authname, authemail, authdate, diff)
423 def parse_patch(text):
424 """Parse the input text and return (description, authname,
425 authemail, authdate, diff)
427 descr, diff = __split_descr_diff(text)
428 descr, authname, authemail, authdate = __parse_description(descr)
430 # we don't yet have an agreed place for the creation date.
432 return (descr, authname, authemail, authdate, diff)
434 def readonly_constant_property(f):
435 """Decorator that converts a function that computes a value to an
436 attribute that returns the value. The value is computed only once,
437 the first time it is accessed."""
439 n = '__' + f.__name__
440 if not hasattr(self, n):
441 setattr(self, n, f(self))
442 return getattr(self, n)
443 return property(new_f)
445 class DirectoryException(StgException):
448 class _Directory(object):
449 def __init__(self, needs_current_series = True):
450 self.needs_current_series = needs_current_series
451 @readonly_constant_property
454 return Run('git', 'rev-parse', '--git-dir'
455 ).discard_stderr().output_one_line()
457 raise DirectoryException('No git repository found')
458 @readonly_constant_property
459 def __topdir_path(self):
461 lines = Run('git', 'rev-parse', '--show-cdup'
462 ).discard_stderr().output_lines()
465 elif len(lines) == 1:
468 raise RunException('Too much output')
470 raise DirectoryException('No git repository found')
471 @readonly_constant_property
472 def is_inside_git_dir(self):
473 return { 'true': True, 'false': False
474 }[Run('git', 'rev-parse', '--is-inside-git-dir'
476 @readonly_constant_property
477 def is_inside_worktree(self):
478 return { 'true': True, 'false': False
479 }[Run('git', 'rev-parse', '--is-inside-work-tree'
481 def cd_to_topdir(self):
482 os.chdir(self.__topdir_path)
484 class DirectoryAnywhere(_Directory):
488 class DirectoryHasRepository(_Directory):
490 self.git_dir # might throw an exception
492 class DirectoryInWorktree(DirectoryHasRepository):
494 DirectoryHasRepository.setup(self)
495 if not self.is_inside_worktree:
496 raise DirectoryException('Not inside a git worktree')
498 class DirectoryGotoToplevel(DirectoryInWorktree):
500 DirectoryInWorktree.setup(self)
503 class DirectoryHasRepositoryLib(_Directory):
504 """For commands that use the new infrastructure in stgit.lib.*."""
506 self.needs_current_series = False
508 # This will throw an exception if we don't have a repository.
509 self.repository = libstack.Repository.default()