mirror of https://gerrit.osmocom.org/osmo-dev
gits: proper rebase dialog
Change-Id: I3d399f38db583df990d6f6da858fc2e199639cb0
This commit is contained in:
Neels Hofmeyr
parent
bc2caa3fd9
commit
67e53d9d7f
237
src/gits
237
src/gits
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@ -73,19 +73,6 @@ def safe_branch_name(branch):
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return branch
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return 'refs/heads/' + branch
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def git_ahead_behind(git_dir, branch, branch_upstream):
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''' Count revisions ahead/behind of the remote branch.
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returns: (ahead, behind) (e.g. (0, 5)) '''
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# Missing remote branch
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if not branch_upstream:
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return (0, 0)
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behind = git_output(git_dir, 'rev-list', '--count', '%s..%s' % (safe_branch_name(branch), branch_upstream))
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ahead = git_output(git_dir, 'rev-list', '--count', '%s..%s' % (branch_upstream, safe_branch_name(branch)))
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return (int(ahead.rstrip()), int(behind.rstrip()))
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def git_branches(git_dir, obj='refs/heads'):
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ret = git_output(git_dir, 'for-each-ref', obj, '--format', '%(refname:short)')
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return ret.splitlines()
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@ -114,24 +101,60 @@ def git_can_fast_forward(git_dir, branch, branch_upstream):
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return git_bool(git_dir, 'merge-base', '--is-ancestor', branch, branch_upstream)
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def format_branch_ahead_behind(branch, ahead, behind):
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''' branch: string like "master"
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ahead, behind: integers like 5, 3
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returns: string like "master", "master[+5]", "master[-3]", "master[+5|-3]" '''
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# Just the branch
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if not ahead and not behind:
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return branch
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class AheadBehind:
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''' Count revisions ahead/behind of the remote branch.
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returns: (ahead, behind) (e.g. (0, 5)) '''
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def __init__(s, git_dir, local, remote):
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s.git_dir = git_dir
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s.local = local
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s.remote = remote
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s.can_ff = False
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# Suffix with ahead/behind
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ret = branch + '['
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if ahead:
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ret += '+' + str(ahead)
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if behind:
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ret += '|'
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if behind:
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ret += '-' + str(behind)
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ret += ']'
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return ret
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if not remote:
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s.ahead = 0
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s.behind = 0
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else:
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behind_str = git_output(git_dir, 'rev-list', '--count', '%s..%s' % (safe_branch_name(local), remote))
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ahead_str = git_output(git_dir, 'rev-list', '--count', '%s..%s' % (remote, safe_branch_name(local)))
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s.ahead = int(ahead_str.rstrip())
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s.behind = int(behind_str.rstrip())
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s.can_ff = s.behind and git_can_fast_forward(git_dir, local, remote)
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def is_diverged(s):
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return s.ahead and s.behind
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def is_behind(s):
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return (not s.ahead) and s.behind
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def is_ahead(s):
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return s.ahead and not s.behind
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def is_sync(s):
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return s.ahead == 0 and s.behind == 0
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def ff(s):
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print('fast-forwarding %s to %s...' % (s.local, s.remote))
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if git_branch_current(s.git_dir) != s.local:
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git(s.git_dir, 'checkout', s.local)
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git(s.git_dir, 'merge', s.remote)
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def __str__(s):
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# Just the branch
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if not s.ahead and not s.behind:
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return s.local
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# Suffix with ahead/behind
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ret = s.local + '['
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if s.ahead:
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ret += '+' + str(s.ahead)
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if s.behind:
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ret += '|'
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if s.behind:
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ret += '-' + str(s.behind)
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ret += ']'
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return ret
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def git_branch_summary(git_dir):
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@ -150,15 +173,14 @@ def git_branch_summary(git_dir):
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if not is_current and branch not in interesting_branch_names:
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continue
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ahead, behind = git_ahead_behind(git_dir, branch,
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git_branch_upstream(git_dir, branch))
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ab = AheadBehind(git_dir, branch, git_branch_upstream(git_dir, branch))
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if not ahead and not behind and not is_current:
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if not ab.ahead and not ab.behind and not is_current:
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# skip branches that are "not interesting"
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continue
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# Branch with ahead/behind upstream info ("master[+1|-5]")
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strs.append(format_branch_ahead_behind(branch, ahead, behind))
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strs.append(str(ab))
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return strs
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@ -241,20 +263,6 @@ def ask(git_dir, *question, valid_answers=('*',)):
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if v == '+' and len(answer):
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return answer
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def ask_reset_hard_or_push_f(git_dir, orig_branch, upstream_branch):
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do_reset = ask(git_dir, 'Diverged.',
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'<empty> skip',
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'RH git reset --hard %s' % upstream_branch,
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'PF `push -f` to overwrite upstream',
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valid_answers=('', 'RH', 'PF'))
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if do_reset == 'RH':
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git(git_dir, 'reset', '--hard', upstream_branch)
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elif do_reset == 'PF':
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git(git_dir, 'push', '-f')
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def rebase(git_dir):
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orig_branch = git_branch_current(git_dir)
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if orig_branch is None:
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@ -288,7 +296,7 @@ def rebase(git_dir):
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if not upstream_branch:
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do_set_upstream = ask(git_dir, 'there is no upstream branch for %r' % orig_branch,
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'<empty> skip',
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'p create upstream branch (git push --set-upstream orgin %s)' % orig_branch,
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'P create upstream branch (git push --set-upstream orgin %s)' % orig_branch,
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'm checkout master',
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valid_answers=('', 'p', 'm'))
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@ -304,64 +312,91 @@ def rebase(git_dir):
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print('skipping branch, because there is no upstream: %r' % orig_branch)
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return orig_branch
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ahead, behind = git_ahead_behind(git_dir, orig_branch, upstream_branch)
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while True:
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# bu: branch-to-upstream
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# bm: branch-to-master
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# um: upstream-to-master
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# Diverged
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if ahead and behind:
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ask_reset_hard_or_push_f(git_dir, orig_branch, upstream_branch)
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upstream_branch = git_branch_upstream(git_dir, orig_branch)
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um = AheadBehind(git_dir, upstream_branch, 'origin/master')
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# Behind
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elif behind:
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if git_can_fast_forward(git_dir, orig_branch, upstream_branch):
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print('fast-forwarding...')
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git(git_dir, 'merge')
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else:
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do_merge = ask(git_dir, 'Behind. git merge?',
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"<empty> don't merge",
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'm git merge',
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valid_answers=('', 'm')
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)
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bm = AheadBehind(git_dir, orig_branch, 'origin/master')
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if do_merge == 'm':
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git(git_dir, 'merge')
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if bm.can_ff:
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bm.ff()
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continue
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# Ahead
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elif ahead:
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do_commit = ask(git_dir, 'Ahead. commit to new branch?',
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'<empty> no',
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'<name> create new branch',
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)
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if do_commit:
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git(git_dir, 'checkout', '-b', do_commit)
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git(git_dir, 'commit', '-am', 'wip', may_fail=True)
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git(git_dir, 'checkout', orig_branch)
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bu = AheadBehind(git_dir, orig_branch, upstream_branch)
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ask_reset_hard_or_push_f(git_dir, orig_branch, upstream_branch)
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if bu.can_ff:
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bu.ff()
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continue
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if git_has_modifications(git_dir):
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error('There are local modifications')
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if not bu.is_sync():
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print(str(bu))
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if not bm.is_sync():
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print('to master: ' + str(bm))
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if not um.is_sync():
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print('upstream to master: ' + str(um))
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# Rebase onto origin/master? Only when this isn't already the master branch
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if upstream_branch != 'origin/master':
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ahead, behind = git_ahead_behind(git_dir, orig_branch, 'origin/master')
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options = ['----- %s' % git_dir,
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'<empty> skip']
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valid_answers = ['']
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all_good = True
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if ahead and behind:
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do_rebase = ask(git_dir, '%r diverged from master. git rebase -i origin/master?' % orig_branch,
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"<empty> don't rebase",
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'r rebase onto origin/master',
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valid_answers=('', 'r'))
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if um.is_diverged():
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all_good = False
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if bu.is_diverged():
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options.append('rum rebase onto upstream, then onto master')
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valid_answers.append('rum')
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if do_rebase == 'r':
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git(git_dir, 'rebase', '-i', 'origin/master')
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# On conflicts, we'll exit with error implicitly
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#if bm.is_diverged():
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options.append('rm rebase onto master: git rebase -i origin/master')
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valid_answers.append('rm')
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if upstream_branch is not None:
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do_push = ask(git_dir, 'git push -f to overwrite %r?' % upstream_branch,
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"<empty> don't overwrite upstream",
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'P `push -f` to overwrite upstream (P in caps!)',
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valid_answers=('', 'P'))
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if do_push == 'P':
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git(git_dir, 'push', '-f')
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if bu.is_diverged():
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all_good = False
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options.append('ru rebase onto upstream: git rebase -i %s' % upstream_branch)
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valid_answers.append('ru')
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options.append('RU reset to upstream: git reset --hard %s' % upstream_branch)
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valid_answers.append('RU')
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if bu.is_diverged() or bu.is_ahead():
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all_good = False
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options.append('P push to overwrite upstream: git push -f')
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valid_answers.append('P')
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if orig_branch == 'master' and (bm.is_ahead() or bm.is_diverged()):
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all_good = False
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options.append('<name> create new branch')
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valid_answers.append('+')
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if all_good:
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break
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do = ask(git_dir, *options, valid_answers=valid_answers)
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if not do:
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break
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if do == 'rum' or do == 'ru':
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git(git_dir, 'rebase', '-i', upstream_branch)
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if do == 'rum' or do == 'rm':
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git(git_dir, 'rebase', '-i', 'origin/master')
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if do == 'RU':
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git(git_dir, 'reset', '--hard', upstream_branch)
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if do == 'P':
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git(git_dir, 'push', '-f')
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if do not in valid_answers:
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new_branch = do
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# create new branch
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print('''git(git_dir, 'checkout', '-b', new_branch)''')
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#orig_branch = new_branch
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return orig_branch
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@ -375,9 +410,11 @@ def cmd_rebase():
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branch = rebase(git_dir)
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if branch != 'master':
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git(git_dir, 'checkout', 'master')
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rebase(git_dir)
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git(git_dir, 'checkout', branch)
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mm = AheadBehind(git_dir, 'master', 'origin/master')
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if not mm.is_sync():
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git(git_dir, 'checkout', 'master')
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rebase(git_dir)
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git(git_dir, 'checkout', branch)
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except SkipThisRepo:
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print('\nSkipping %r' % git_dir)
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