Mercurial > hg
view mercurial/subrepo.py @ 16534:11212babc690 stable
merge: check for untracked files more precisely (issue3400)
This fixes the regression, but still leaves the long-standing issue
that merge doesn't cope with trying to merge files and directories.
author | Matt Mackall <mpm@selenic.com> |
---|---|
date | Fri, 27 Apr 2012 13:18:09 -0500 |
parents | e37199a1f9d4 |
children | ae2664ee0223 |
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# subrepo.py - sub-repository handling for Mercurial # # Copyright 2009-2010 Matt Mackall <mpm@selenic.com> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. import errno, os, re, xml.dom.minidom, shutil, posixpath import stat, subprocess, tarfile from i18n import _ import config, scmutil, util, node, error, cmdutil, bookmarks hg = None propertycache = util.propertycache nullstate = ('', '', 'empty') def state(ctx, ui): """return a state dict, mapping subrepo paths configured in .hgsub to tuple: (source from .hgsub, revision from .hgsubstate, kind (key in types dict)) """ p = config.config() def read(f, sections=None, remap=None): if f in ctx: try: data = ctx[f].data() except IOError, err: if err.errno != errno.ENOENT: raise # handle missing subrepo spec files as removed ui.warn(_("warning: subrepo spec file %s not found\n") % f) return p.parse(f, data, sections, remap, read) else: raise util.Abort(_("subrepo spec file %s not found") % f) if '.hgsub' in ctx: read('.hgsub') for path, src in ui.configitems('subpaths'): p.set('subpaths', path, src, ui.configsource('subpaths', path)) rev = {} if '.hgsubstate' in ctx: try: for l in ctx['.hgsubstate'].data().splitlines(): revision, path = l.split(" ", 1) rev[path] = revision except IOError, err: if err.errno != errno.ENOENT: raise def remap(src): for pattern, repl in p.items('subpaths'): # Turn r'C:\foo\bar' into r'C:\\foo\\bar' since re.sub # does a string decode. repl = repl.encode('string-escape') # However, we still want to allow back references to go # through unharmed, so we turn r'\\1' into r'\1'. Again, # extra escapes are needed because re.sub string decodes. repl = re.sub(r'\\\\([0-9]+)', r'\\\1', repl) try: src = re.sub(pattern, repl, src, 1) except re.error, e: raise util.Abort(_("bad subrepository pattern in %s: %s") % (p.source('subpaths', pattern), e)) return src state = {} for path, src in p[''].items(): kind = 'hg' if src.startswith('['): if ']' not in src: raise util.Abort(_('missing ] in subrepo source')) kind, src = src.split(']', 1) kind = kind[1:] src = src.lstrip() # strip any extra whitespace after ']' if not util.url(src).isabs(): parent = _abssource(ctx._repo, abort=False) if parent: parent = util.url(parent) parent.path = posixpath.join(parent.path or '', src) parent.path = posixpath.normpath(parent.path) joined = str(parent) # Remap the full joined path and use it if it changes, # else remap the original source. remapped = remap(joined) if remapped == joined: src = remap(src) else: src = remapped src = remap(src) state[util.pconvert(path)] = (src.strip(), rev.get(path, ''), kind) return state def writestate(repo, state): """rewrite .hgsubstate in (outer) repo with these subrepo states""" lines = ['%s %s\n' % (state[s][1], s) for s in sorted(state)] repo.wwrite('.hgsubstate', ''.join(lines), '') def submerge(repo, wctx, mctx, actx, overwrite): """delegated from merge.applyupdates: merging of .hgsubstate file in working context, merging context and ancestor context""" if mctx == actx: # backwards? actx = wctx.p1() s1 = wctx.substate s2 = mctx.substate sa = actx.substate sm = {} repo.ui.debug("subrepo merge %s %s %s\n" % (wctx, mctx, actx)) def debug(s, msg, r=""): if r: r = "%s:%s:%s" % r repo.ui.debug(" subrepo %s: %s %s\n" % (s, msg, r)) for s, l in s1.items(): a = sa.get(s, nullstate) ld = l # local state with possible dirty flag for compares if wctx.sub(s).dirty(): ld = (l[0], l[1] + "+") if wctx == actx: # overwrite a = ld if s in s2: r = s2[s] if ld == r or r == a: # no change or local is newer sm[s] = l continue elif ld == a: # other side changed debug(s, "other changed, get", r) wctx.sub(s).get(r, overwrite) sm[s] = r elif ld[0] != r[0]: # sources differ if repo.ui.promptchoice( _(' subrepository sources for %s differ\n' 'use (l)ocal source (%s) or (r)emote source (%s)?') % (s, l[0], r[0]), (_('&Local'), _('&Remote')), 0): debug(s, "prompt changed, get", r) wctx.sub(s).get(r, overwrite) sm[s] = r elif ld[1] == a[1]: # local side is unchanged debug(s, "other side changed, get", r) wctx.sub(s).get(r, overwrite) sm[s] = r else: debug(s, "both sides changed, merge with", r) wctx.sub(s).merge(r) sm[s] = l elif ld == a: # remote removed, local unchanged debug(s, "remote removed, remove") wctx.sub(s).remove() elif a == nullstate: # not present in remote or ancestor debug(s, "local added, keep") sm[s] = l continue else: if repo.ui.promptchoice( _(' local changed subrepository %s which remote removed\n' 'use (c)hanged version or (d)elete?') % s, (_('&Changed'), _('&Delete')), 0): debug(s, "prompt remove") wctx.sub(s).remove() for s, r in sorted(s2.items()): if s in s1: continue elif s not in sa: debug(s, "remote added, get", r) mctx.sub(s).get(r) sm[s] = r elif r != sa[s]: if repo.ui.promptchoice( _(' remote changed subrepository %s which local removed\n' 'use (c)hanged version or (d)elete?') % s, (_('&Changed'), _('&Delete')), 0) == 0: debug(s, "prompt recreate", r) wctx.sub(s).get(r) sm[s] = r # record merged .hgsubstate writestate(repo, sm) def _updateprompt(ui, sub, dirty, local, remote): if dirty: msg = (_(' subrepository sources for %s differ\n' 'use (l)ocal source (%s) or (r)emote source (%s)?\n') % (subrelpath(sub), local, remote)) else: msg = (_(' subrepository sources for %s differ (in checked out version)\n' 'use (l)ocal source (%s) or (r)emote source (%s)?\n') % (subrelpath(sub), local, remote)) return ui.promptchoice(msg, (_('&Local'), _('&Remote')), 0) def reporelpath(repo): """return path to this (sub)repo as seen from outermost repo""" parent = repo while util.safehasattr(parent, '_subparent'): parent = parent._subparent p = parent.root.rstrip(os.sep) return repo.root[len(p) + 1:] def subrelpath(sub): """return path to this subrepo as seen from outermost repo""" if util.safehasattr(sub, '_relpath'): return sub._relpath if not util.safehasattr(sub, '_repo'): return sub._path return reporelpath(sub._repo) def _abssource(repo, push=False, abort=True): """return pull/push path of repo - either based on parent repo .hgsub info or on the top repo config. Abort or return None if no source found.""" if util.safehasattr(repo, '_subparent'): source = util.url(repo._subsource) if source.isabs(): return str(source) source.path = posixpath.normpath(source.path) parent = _abssource(repo._subparent, push, abort=False) if parent: parent = util.url(util.pconvert(parent)) parent.path = posixpath.join(parent.path or '', source.path) parent.path = posixpath.normpath(parent.path) return str(parent) else: # recursion reached top repo if util.safehasattr(repo, '_subtoppath'): return repo._subtoppath if push and repo.ui.config('paths', 'default-push'): return repo.ui.config('paths', 'default-push') if repo.ui.config('paths', 'default'): return repo.ui.config('paths', 'default') if abort: raise util.Abort(_("default path for subrepository %s not found") % reporelpath(repo)) def itersubrepos(ctx1, ctx2): """find subrepos in ctx1 or ctx2""" # Create a (subpath, ctx) mapping where we prefer subpaths from # ctx1. The subpaths from ctx2 are important when the .hgsub file # has been modified (in ctx2) but not yet committed (in ctx1). subpaths = dict.fromkeys(ctx2.substate, ctx2) subpaths.update(dict.fromkeys(ctx1.substate, ctx1)) for subpath, ctx in sorted(subpaths.iteritems()): yield subpath, ctx.sub(subpath) def subrepo(ctx, path): """return instance of the right subrepo class for subrepo in path""" # subrepo inherently violates our import layering rules # because it wants to make repo objects from deep inside the stack # so we manually delay the circular imports to not break # scripts that don't use our demand-loading global hg import hg as h hg = h scmutil.pathauditor(ctx._repo.root)(path) state = ctx.substate.get(path, nullstate) if state[2] not in types: raise util.Abort(_('unknown subrepo type %s') % state[2]) return types[state[2]](ctx, path, state[:2]) # subrepo classes need to implement the following abstract class: class abstractsubrepo(object): def dirty(self, ignoreupdate=False): """returns true if the dirstate of the subrepo is dirty or does not match current stored state. If ignoreupdate is true, only check whether the subrepo has uncommitted changes in its dirstate. """ raise NotImplementedError def basestate(self): """current working directory base state, disregarding .hgsubstate state and working directory modifications""" raise NotImplementedError def checknested(self, path): """check if path is a subrepository within this repository""" return False def commit(self, text, user, date): """commit the current changes to the subrepo with the given log message. Use given user and date if possible. Return the new state of the subrepo. """ raise NotImplementedError def remove(self): """remove the subrepo (should verify the dirstate is not dirty first) """ raise NotImplementedError def get(self, state, overwrite=False): """run whatever commands are needed to put the subrepo into this state """ raise NotImplementedError def merge(self, state): """merge currently-saved state with the new state.""" raise NotImplementedError def push(self, opts): """perform whatever action is analogous to 'hg push' This may be a no-op on some systems. """ raise NotImplementedError def add(self, ui, match, dryrun, listsubrepos, prefix, explicitonly): return [] def status(self, rev2, **opts): return [], [], [], [], [], [], [] def diff(self, diffopts, node2, match, prefix, **opts): pass def outgoing(self, ui, dest, opts): return 1 def incoming(self, ui, source, opts): return 1 def files(self): """return filename iterator""" raise NotImplementedError def filedata(self, name): """return file data""" raise NotImplementedError def fileflags(self, name): """return file flags""" return '' def archive(self, ui, archiver, prefix): files = self.files() total = len(files) relpath = subrelpath(self) ui.progress(_('archiving (%s)') % relpath, 0, unit=_('files'), total=total) for i, name in enumerate(files): flags = self.fileflags(name) mode = 'x' in flags and 0755 or 0644 symlink = 'l' in flags archiver.addfile(os.path.join(prefix, self._path, name), mode, symlink, self.filedata(name)) ui.progress(_('archiving (%s)') % relpath, i + 1, unit=_('files'), total=total) ui.progress(_('archiving (%s)') % relpath, None) def walk(self, match): ''' walk recursively through the directory tree, finding all files matched by the match function ''' pass def forget(self, ui, match, prefix): return ([], []) def revert(self, ui, substate, *pats, **opts): ui.warn('%s: reverting %s subrepos is unsupported\n' \ % (substate[0], substate[2])) return [] class hgsubrepo(abstractsubrepo): def __init__(self, ctx, path, state): self._path = path self._state = state r = ctx._repo root = r.wjoin(path) create = False if not os.path.exists(os.path.join(root, '.hg')): create = True util.makedirs(root) self._repo = hg.repository(r.ui, root, create=create) self._initrepo(r, state[0], create) def _initrepo(self, parentrepo, source, create): self._repo._subparent = parentrepo self._repo._subsource = source if create: fp = self._repo.opener("hgrc", "w", text=True) fp.write('[paths]\n') def addpathconfig(key, value): if value: fp.write('%s = %s\n' % (key, value)) self._repo.ui.setconfig('paths', key, value) defpath = _abssource(self._repo, abort=False) defpushpath = _abssource(self._repo, True, abort=False) addpathconfig('default', defpath) if defpath != defpushpath: addpathconfig('default-push', defpushpath) fp.close() def add(self, ui, match, dryrun, listsubrepos, prefix, explicitonly): return cmdutil.add(ui, self._repo, match, dryrun, listsubrepos, os.path.join(prefix, self._path), explicitonly) def status(self, rev2, **opts): try: rev1 = self._state[1] ctx1 = self._repo[rev1] ctx2 = self._repo[rev2] return self._repo.status(ctx1, ctx2, **opts) except error.RepoLookupError, inst: self._repo.ui.warn(_('warning: error "%s" in subrepository "%s"\n') % (inst, subrelpath(self))) return [], [], [], [], [], [], [] def diff(self, diffopts, node2, match, prefix, **opts): try: node1 = node.bin(self._state[1]) # We currently expect node2 to come from substate and be # in hex format if node2 is not None: node2 = node.bin(node2) cmdutil.diffordiffstat(self._repo.ui, self._repo, diffopts, node1, node2, match, prefix=os.path.join(prefix, self._path), listsubrepos=True, **opts) except error.RepoLookupError, inst: self._repo.ui.warn(_('warning: error "%s" in subrepository "%s"\n') % (inst, subrelpath(self))) def archive(self, ui, archiver, prefix): self._get(self._state + ('hg',)) abstractsubrepo.archive(self, ui, archiver, prefix) rev = self._state[1] ctx = self._repo[rev] for subpath in ctx.substate: s = subrepo(ctx, subpath) s.archive(ui, archiver, os.path.join(prefix, self._path)) def dirty(self, ignoreupdate=False): r = self._state[1] if r == '' and not ignoreupdate: # no state recorded return True w = self._repo[None] if r != w.p1().hex() and not ignoreupdate: # different version checked out return True return w.dirty() # working directory changed def basestate(self): return self._repo['.'].hex() def checknested(self, path): return self._repo._checknested(self._repo.wjoin(path)) def commit(self, text, user, date): # don't bother committing in the subrepo if it's only been # updated if not self.dirty(True): return self._repo['.'].hex() self._repo.ui.debug("committing subrepo %s\n" % subrelpath(self)) n = self._repo.commit(text, user, date) if not n: return self._repo['.'].hex() # different version checked out return node.hex(n) def remove(self): # we can't fully delete the repository as it may contain # local-only history self._repo.ui.note(_('removing subrepo %s\n') % subrelpath(self)) hg.clean(self._repo, node.nullid, False) def _get(self, state): source, revision, kind = state if revision not in self._repo: self._repo._subsource = source srcurl = _abssource(self._repo) other = hg.peer(self._repo.ui, {}, srcurl) if len(self._repo) == 0: self._repo.ui.status(_('cloning subrepo %s from %s\n') % (subrelpath(self), srcurl)) parentrepo = self._repo._subparent shutil.rmtree(self._repo.path) other, self._repo = hg.clone(self._repo._subparent.ui, {}, other, self._repo.root, update=False) self._initrepo(parentrepo, source, create=True) else: self._repo.ui.status(_('pulling subrepo %s from %s\n') % (subrelpath(self), srcurl)) self._repo.pull(other) bookmarks.updatefromremote(self._repo.ui, self._repo, other, srcurl) def get(self, state, overwrite=False): self._get(state) source, revision, kind = state self._repo.ui.debug("getting subrepo %s\n" % self._path) hg.clean(self._repo, revision, False) def merge(self, state): self._get(state) cur = self._repo['.'] dst = self._repo[state[1]] anc = dst.ancestor(cur) def mergefunc(): if anc == cur and dst.branch() == cur.branch(): self._repo.ui.debug("updating subrepo %s\n" % subrelpath(self)) hg.update(self._repo, state[1]) elif anc == dst: self._repo.ui.debug("skipping subrepo %s\n" % subrelpath(self)) else: self._repo.ui.debug("merging subrepo %s\n" % subrelpath(self)) hg.merge(self._repo, state[1], remind=False) wctx = self._repo[None] if self.dirty(): if anc != dst: if _updateprompt(self._repo.ui, self, wctx.dirty(), cur, dst): mergefunc() else: mergefunc() else: mergefunc() def push(self, opts): force = opts.get('force') newbranch = opts.get('new_branch') ssh = opts.get('ssh') # push subrepos depth-first for coherent ordering c = self._repo[''] subs = c.substate # only repos that are committed for s in sorted(subs): if c.sub(s).push(opts) == 0: return False dsturl = _abssource(self._repo, True) self._repo.ui.status(_('pushing subrepo %s to %s\n') % (subrelpath(self), dsturl)) other = hg.peer(self._repo.ui, {'ssh': ssh}, dsturl) return self._repo.push(other, force, newbranch=newbranch) def outgoing(self, ui, dest, opts): return hg.outgoing(ui, self._repo, _abssource(self._repo, True), opts) def incoming(self, ui, source, opts): return hg.incoming(ui, self._repo, _abssource(self._repo, False), opts) def files(self): rev = self._state[1] ctx = self._repo[rev] return ctx.manifest() def filedata(self, name): rev = self._state[1] return self._repo[rev][name].data() def fileflags(self, name): rev = self._state[1] ctx = self._repo[rev] return ctx.flags(name) def walk(self, match): ctx = self._repo[None] return ctx.walk(match) def forget(self, ui, match, prefix): return cmdutil.forget(ui, self._repo, match, os.path.join(prefix, self._path), True) def revert(self, ui, substate, *pats, **opts): # reverting a subrepo is a 2 step process: # 1. if the no_backup is not set, revert all modified # files inside the subrepo # 2. update the subrepo to the revision specified in # the corresponding substate dictionary ui.status(_('reverting subrepo %s\n') % substate[0]) if not opts.get('no_backup'): # Revert all files on the subrepo, creating backups # Note that this will not recursively revert subrepos # We could do it if there was a set:subrepos() predicate opts = opts.copy() opts['date'] = None opts['rev'] = substate[1] pats = [] if not opts['all']: pats = ['set:modified()'] self.filerevert(ui, *pats, **opts) # Update the repo to the revision specified in the given substate self.get(substate, overwrite=True) def filerevert(self, ui, *pats, **opts): ctx = self._repo[opts['rev']] parents = self._repo.dirstate.parents() if opts['all']: pats = ['set:modified()'] else: pats = [] cmdutil.revert(ui, self._repo, ctx, parents, *pats, **opts) class svnsubrepo(abstractsubrepo): def __init__(self, ctx, path, state): self._path = path self._state = state self._ctx = ctx self._ui = ctx._repo.ui self._exe = util.findexe('svn') if not self._exe: raise util.Abort(_("'svn' executable not found for subrepo '%s'") % self._path) def _svncommand(self, commands, filename='', failok=False): cmd = [self._exe] extrakw = {} if not self._ui.interactive(): # Making stdin be a pipe should prevent svn from behaving # interactively even if we can't pass --non-interactive. extrakw['stdin'] = subprocess.PIPE # Starting in svn 1.5 --non-interactive is a global flag # instead of being per-command, but we need to support 1.4 so # we have to be intelligent about what commands take # --non-interactive. if commands[0] in ('update', 'checkout', 'commit'): cmd.append('--non-interactive') cmd.extend(commands) if filename is not None: path = os.path.join(self._ctx._repo.origroot, self._path, filename) cmd.append(path) env = dict(os.environ) # Avoid localized output, preserve current locale for everything else. env['LC_MESSAGES'] = 'C' p = subprocess.Popen(cmd, bufsize=-1, close_fds=util.closefds, stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True, env=env, **extrakw) stdout, stderr = p.communicate() stderr = stderr.strip() if not failok: if p.returncode: raise util.Abort(stderr or 'exited with code %d' % p.returncode) if stderr: self._ui.warn(stderr + '\n') return stdout, stderr @propertycache def _svnversion(self): output, err = self._svncommand(['--version'], filename=None) m = re.search(r'^svn,\s+version\s+(\d+)\.(\d+)', output) if not m: raise util.Abort(_('cannot retrieve svn tool version')) return (int(m.group(1)), int(m.group(2))) def _wcrevs(self): # Get the working directory revision as well as the last # commit revision so we can compare the subrepo state with # both. We used to store the working directory one. output, err = self._svncommand(['info', '--xml']) doc = xml.dom.minidom.parseString(output) entries = doc.getElementsByTagName('entry') lastrev, rev = '0', '0' if entries: rev = str(entries[0].getAttribute('revision')) or '0' commits = entries[0].getElementsByTagName('commit') if commits: lastrev = str(commits[0].getAttribute('revision')) or '0' return (lastrev, rev) def _wcrev(self): return self._wcrevs()[0] def _wcchanged(self): """Return (changes, extchanges, missing) where changes is True if the working directory was changed, extchanges is True if any of these changes concern an external entry and missing is True if any change is a missing entry. """ output, err = self._svncommand(['status', '--xml']) externals, changes, missing = [], [], [] doc = xml.dom.minidom.parseString(output) for e in doc.getElementsByTagName('entry'): s = e.getElementsByTagName('wc-status') if not s: continue item = s[0].getAttribute('item') props = s[0].getAttribute('props') path = e.getAttribute('path') if item == 'external': externals.append(path) elif item == 'missing': missing.append(path) if (item not in ('', 'normal', 'unversioned', 'external') or props not in ('', 'none', 'normal')): changes.append(path) for path in changes: for ext in externals: if path == ext or path.startswith(ext + os.sep): return True, True, bool(missing) return bool(changes), False, bool(missing) def dirty(self, ignoreupdate=False): if not self._wcchanged()[0]: if self._state[1] in self._wcrevs() or ignoreupdate: return False return True def basestate(self): return self._wcrev() def commit(self, text, user, date): # user and date are out of our hands since svn is centralized changed, extchanged, missing = self._wcchanged() if not changed: return self._wcrev() if extchanged: # Do not try to commit externals raise util.Abort(_('cannot commit svn externals')) if missing: # svn can commit with missing entries but aborting like hg # seems a better approach. raise util.Abort(_('cannot commit missing svn entries')) commitinfo, err = self._svncommand(['commit', '-m', text]) self._ui.status(commitinfo) newrev = re.search('Committed revision ([0-9]+).', commitinfo) if not newrev: if not commitinfo.strip(): # Sometimes, our definition of "changed" differs from # svn one. For instance, svn ignores missing files # when committing. If there are only missing files, no # commit is made, no output and no error code. raise util.Abort(_('failed to commit svn changes')) raise util.Abort(commitinfo.splitlines()[-1]) newrev = newrev.groups()[0] self._ui.status(self._svncommand(['update', '-r', newrev])[0]) return newrev def remove(self): if self.dirty(): self._ui.warn(_('not removing repo %s because ' 'it has changes.\n' % self._path)) return self._ui.note(_('removing subrepo %s\n') % self._path) def onerror(function, path, excinfo): if function is not os.remove: raise # read-only files cannot be unlinked under Windows s = os.stat(path) if (s.st_mode & stat.S_IWRITE) != 0: raise os.chmod(path, stat.S_IMODE(s.st_mode) | stat.S_IWRITE) os.remove(path) path = self._ctx._repo.wjoin(self._path) shutil.rmtree(path, onerror=onerror) try: os.removedirs(os.path.dirname(path)) except OSError: pass def get(self, state, overwrite=False): if overwrite: self._svncommand(['revert', '--recursive']) args = ['checkout'] if self._svnversion >= (1, 5): args.append('--force') # The revision must be specified at the end of the URL to properly # update to a directory which has since been deleted and recreated. args.append('%s@%s' % (state[0], state[1])) status, err = self._svncommand(args, failok=True) if not re.search('Checked out revision [0-9]+.', status): if ('is already a working copy for a different URL' in err and (self._wcchanged()[:2] == (False, False))): # obstructed but clean working copy, so just blow it away. self.remove() self.get(state, overwrite=False) return raise util.Abort((status or err).splitlines()[-1]) self._ui.status(status) def merge(self, state): old = self._state[1] new = state[1] if new != self._wcrev(): dirty = old == self._wcrev() or self._wcchanged()[0] if _updateprompt(self._ui, self, dirty, self._wcrev(), new): self.get(state, False) def push(self, opts): # push is a no-op for SVN return True def files(self): output = self._svncommand(['list', '--recursive', '--xml'])[0] doc = xml.dom.minidom.parseString(output) paths = [] for e in doc.getElementsByTagName('entry'): kind = str(e.getAttribute('kind')) if kind != 'file': continue name = ''.join(c.data for c in e.getElementsByTagName('name')[0].childNodes if c.nodeType == c.TEXT_NODE) paths.append(name) return paths def filedata(self, name): return self._svncommand(['cat'], name)[0] class gitsubrepo(abstractsubrepo): def __init__(self, ctx, path, state): # TODO add git version check. self._state = state self._ctx = ctx self._path = path self._relpath = os.path.join(reporelpath(ctx._repo), path) self._abspath = ctx._repo.wjoin(path) self._subparent = ctx._repo self._ui = ctx._repo.ui def _gitcommand(self, commands, env=None, stream=False): return self._gitdir(commands, env=env, stream=stream)[0] def _gitdir(self, commands, env=None, stream=False): return self._gitnodir(commands, env=env, stream=stream, cwd=self._abspath) def _gitnodir(self, commands, env=None, stream=False, cwd=None): """Calls the git command The methods tries to call the git command. versions previor to 1.6.0 are not supported and very probably fail. """ self._ui.debug('%s: git %s\n' % (self._relpath, ' '.join(commands))) # unless ui.quiet is set, print git's stderr, # which is mostly progress and useful info errpipe = None if self._ui.quiet: errpipe = open(os.devnull, 'w') p = subprocess.Popen(['git'] + commands, bufsize=-1, cwd=cwd, env=env, close_fds=util.closefds, stdout=subprocess.PIPE, stderr=errpipe) if stream: return p.stdout, None retdata = p.stdout.read().strip() # wait for the child to exit to avoid race condition. p.wait() if p.returncode != 0 and p.returncode != 1: # there are certain error codes that are ok command = commands[0] if command in ('cat-file', 'symbolic-ref'): return retdata, p.returncode # for all others, abort raise util.Abort('git %s error %d in %s' % (command, p.returncode, self._relpath)) return retdata, p.returncode def _gitmissing(self): return not os.path.exists(os.path.join(self._abspath, '.git')) def _gitstate(self): return self._gitcommand(['rev-parse', 'HEAD']) def _gitcurrentbranch(self): current, err = self._gitdir(['symbolic-ref', 'HEAD', '--quiet']) if err: current = None return current def _gitremote(self, remote): out = self._gitcommand(['remote', 'show', '-n', remote]) line = out.split('\n')[1] i = line.index('URL: ') + len('URL: ') return line[i:] def _githavelocally(self, revision): out, code = self._gitdir(['cat-file', '-e', revision]) return code == 0 def _gitisancestor(self, r1, r2): base = self._gitcommand(['merge-base', r1, r2]) return base == r1 def _gitisbare(self): return self._gitcommand(['config', '--bool', 'core.bare']) == 'true' def _gitupdatestat(self): """This must be run before git diff-index. diff-index only looks at changes to file stat; this command looks at file contents and updates the stat.""" self._gitcommand(['update-index', '-q', '--refresh']) def _gitbranchmap(self): '''returns 2 things: a map from git branch to revision a map from revision to branches''' branch2rev = {} rev2branch = {} out = self._gitcommand(['for-each-ref', '--format', '%(objectname) %(refname)']) for line in out.split('\n'): revision, ref = line.split(' ') if (not ref.startswith('refs/heads/') and not ref.startswith('refs/remotes/')): continue if ref.startswith('refs/remotes/') and ref.endswith('/HEAD'): continue # ignore remote/HEAD redirects branch2rev[ref] = revision rev2branch.setdefault(revision, []).append(ref) return branch2rev, rev2branch def _gittracking(self, branches): 'return map of remote branch to local tracking branch' # assumes no more than one local tracking branch for each remote tracking = {} for b in branches: if b.startswith('refs/remotes/'): continue bname = b.split('/', 2)[2] remote = self._gitcommand(['config', 'branch.%s.remote' % bname]) if remote: ref = self._gitcommand(['config', 'branch.%s.merge' % bname]) tracking['refs/remotes/%s/%s' % (remote, ref.split('/', 2)[2])] = b return tracking def _abssource(self, source): if '://' not in source: # recognize the scp syntax as an absolute source colon = source.find(':') if colon != -1 and '/' not in source[:colon]: return source self._subsource = source return _abssource(self) def _fetch(self, source, revision): if self._gitmissing(): source = self._abssource(source) self._ui.status(_('cloning subrepo %s from %s\n') % (self._relpath, source)) self._gitnodir(['clone', source, self._abspath]) if self._githavelocally(revision): return self._ui.status(_('pulling subrepo %s from %s\n') % (self._relpath, self._gitremote('origin'))) # try only origin: the originally cloned repo self._gitcommand(['fetch']) if not self._githavelocally(revision): raise util.Abort(_("revision %s does not exist in subrepo %s\n") % (revision, self._relpath)) def dirty(self, ignoreupdate=False): if self._gitmissing(): return self._state[1] != '' if self._gitisbare(): return True if not ignoreupdate and self._state[1] != self._gitstate(): # different version checked out return True # check for staged changes or modified files; ignore untracked files self._gitupdatestat() out, code = self._gitdir(['diff-index', '--quiet', 'HEAD']) return code == 1 def basestate(self): return self._gitstate() def get(self, state, overwrite=False): source, revision, kind = state if not revision: self.remove() return self._fetch(source, revision) # if the repo was set to be bare, unbare it if self._gitisbare(): self._gitcommand(['config', 'core.bare', 'false']) if self._gitstate() == revision: self._gitcommand(['reset', '--hard', 'HEAD']) return elif self._gitstate() == revision: if overwrite: # first reset the index to unmark new files for commit, because # reset --hard will otherwise throw away files added for commit, # not just unmark them. self._gitcommand(['reset', 'HEAD']) self._gitcommand(['reset', '--hard', 'HEAD']) return branch2rev, rev2branch = self._gitbranchmap() def checkout(args): cmd = ['checkout'] if overwrite: # first reset the index to unmark new files for commit, because # the -f option will otherwise throw away files added for # commit, not just unmark them. self._gitcommand(['reset', 'HEAD']) cmd.append('-f') self._gitcommand(cmd + args) def rawcheckout(): # no branch to checkout, check it out with no branch self._ui.warn(_('checking out detached HEAD in subrepo %s\n') % self._relpath) self._ui.warn(_('check out a git branch if you intend ' 'to make changes\n')) checkout(['-q', revision]) if revision not in rev2branch: rawcheckout() return branches = rev2branch[revision] firstlocalbranch = None for b in branches: if b == 'refs/heads/master': # master trumps all other branches checkout(['refs/heads/master']) return if not firstlocalbranch and not b.startswith('refs/remotes/'): firstlocalbranch = b if firstlocalbranch: checkout([firstlocalbranch]) return tracking = self._gittracking(branch2rev.keys()) # choose a remote branch already tracked if possible remote = branches[0] if remote not in tracking: for b in branches: if b in tracking: remote = b break if remote not in tracking: # create a new local tracking branch local = remote.split('/', 2)[2] checkout(['-b', local, remote]) elif self._gitisancestor(branch2rev[tracking[remote]], remote): # When updating to a tracked remote branch, # if the local tracking branch is downstream of it, # a normal `git pull` would have performed a "fast-forward merge" # which is equivalent to updating the local branch to the remote. # Since we are only looking at branching at update, we need to # detect this situation and perform this action lazily. if tracking[remote] != self._gitcurrentbranch(): checkout([tracking[remote]]) self._gitcommand(['merge', '--ff', remote]) else: # a real merge would be required, just checkout the revision rawcheckout() def commit(self, text, user, date): if self._gitmissing(): raise util.Abort(_("subrepo %s is missing") % self._relpath) cmd = ['commit', '-a', '-m', text] env = os.environ.copy() if user: cmd += ['--author', user] if date: # git's date parser silently ignores when seconds < 1e9 # convert to ISO8601 env['GIT_AUTHOR_DATE'] = util.datestr(date, '%Y-%m-%dT%H:%M:%S %1%2') self._gitcommand(cmd, env=env) # make sure commit works otherwise HEAD might not exist under certain # circumstances return self._gitstate() def merge(self, state): source, revision, kind = state self._fetch(source, revision) base = self._gitcommand(['merge-base', revision, self._state[1]]) self._gitupdatestat() out, code = self._gitdir(['diff-index', '--quiet', 'HEAD']) def mergefunc(): if base == revision: self.get(state) # fast forward merge elif base != self._state[1]: self._gitcommand(['merge', '--no-commit', revision]) if self.dirty(): if self._gitstate() != revision: dirty = self._gitstate() == self._state[1] or code != 0 if _updateprompt(self._ui, self, dirty, self._state[1][:7], revision[:7]): mergefunc() else: mergefunc() def push(self, opts): force = opts.get('force') if not self._state[1]: return True if self._gitmissing(): raise util.Abort(_("subrepo %s is missing") % self._relpath) # if a branch in origin contains the revision, nothing to do branch2rev, rev2branch = self._gitbranchmap() if self._state[1] in rev2branch: for b in rev2branch[self._state[1]]: if b.startswith('refs/remotes/origin/'): return True for b, revision in branch2rev.iteritems(): if b.startswith('refs/remotes/origin/'): if self._gitisancestor(self._state[1], revision): return True # otherwise, try to push the currently checked out branch cmd = ['push'] if force: cmd.append('--force') current = self._gitcurrentbranch() if current: # determine if the current branch is even useful if not self._gitisancestor(self._state[1], current): self._ui.warn(_('unrelated git branch checked out ' 'in subrepo %s\n') % self._relpath) return False self._ui.status(_('pushing branch %s of subrepo %s\n') % (current.split('/', 2)[2], self._relpath)) self._gitcommand(cmd + ['origin', current]) return True else: self._ui.warn(_('no branch checked out in subrepo %s\n' 'cannot push revision %s') % (self._relpath, self._state[1])) return False def remove(self): if self._gitmissing(): return if self.dirty(): self._ui.warn(_('not removing repo %s because ' 'it has changes.\n') % self._relpath) return # we can't fully delete the repository as it may contain # local-only history self._ui.note(_('removing subrepo %s\n') % self._relpath) self._gitcommand(['config', 'core.bare', 'true']) for f in os.listdir(self._abspath): if f == '.git': continue path = os.path.join(self._abspath, f) if os.path.isdir(path) and not os.path.islink(path): shutil.rmtree(path) else: os.remove(path) def archive(self, ui, archiver, prefix): source, revision = self._state if not revision: return self._fetch(source, revision) # Parse git's native archive command. # This should be much faster than manually traversing the trees # and objects with many subprocess calls. tarstream = self._gitcommand(['archive', revision], stream=True) tar = tarfile.open(fileobj=tarstream, mode='r|') relpath = subrelpath(self) ui.progress(_('archiving (%s)') % relpath, 0, unit=_('files')) for i, info in enumerate(tar): if info.isdir(): continue if info.issym(): data = info.linkname else: data = tar.extractfile(info).read() archiver.addfile(os.path.join(prefix, self._path, info.name), info.mode, info.issym(), data) ui.progress(_('archiving (%s)') % relpath, i + 1, unit=_('files')) ui.progress(_('archiving (%s)') % relpath, None) def status(self, rev2, **opts): rev1 = self._state[1] if self._gitmissing() or not rev1: # if the repo is missing, return no results return [], [], [], [], [], [], [] modified, added, removed = [], [], [] self._gitupdatestat() if rev2: command = ['diff-tree', rev1, rev2] else: command = ['diff-index', rev1] out = self._gitcommand(command) for line in out.split('\n'): tab = line.find('\t') if tab == -1: continue status, f = line[tab - 1], line[tab + 1:] if status == 'M': modified.append(f) elif status == 'A': added.append(f) elif status == 'D': removed.append(f) deleted = unknown = ignored = clean = [] return modified, added, removed, deleted, unknown, ignored, clean types = { 'hg': hgsubrepo, 'svn': svnsubrepo, 'git': gitsubrepo, }