Mercurial > hg
view hgext/convert/common.py @ 30949:e7d7335819f4
debugcommands: move 'debugrebuildfncache' in the new module
author | Pierre-Yves David <pierre-yves.david@ens-lyon.org> |
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date | Thu, 02 Feb 2017 10:01:00 +0100 |
parents | 1404146157d9 |
children | d5b2beca16c0 |
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# common.py - common code for the convert extension # # Copyright 2005-2009 Matt Mackall <mpm@selenic.com> and others # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. from __future__ import absolute_import import base64 import datetime import errno import os import re import subprocess from mercurial.i18n import _ from mercurial import ( error, phases, util, ) pickle = util.pickle propertycache = util.propertycache def encodeargs(args): def encodearg(s): lines = base64.encodestring(s) lines = [l.splitlines()[0] for l in lines] return ''.join(lines) s = pickle.dumps(args) return encodearg(s) def decodeargs(s): s = base64.decodestring(s) return pickle.loads(s) class MissingTool(Exception): pass def checktool(exe, name=None, abort=True): name = name or exe if not util.findexe(exe): if abort: exc = error.Abort else: exc = MissingTool raise exc(_('cannot find required "%s" tool') % name) class NoRepo(Exception): pass SKIPREV = 'SKIP' class commit(object): def __init__(self, author, date, desc, parents, branch=None, rev=None, extra=None, sortkey=None, saverev=True, phase=phases.draft, optparents=None): self.author = author or 'unknown' self.date = date or '0 0' self.desc = desc self.parents = parents # will be converted and used as parents self.optparents = optparents or [] # will be used if already converted self.branch = branch self.rev = rev self.extra = extra or {} self.sortkey = sortkey self.saverev = saverev self.phase = phase class converter_source(object): """Conversion source interface""" def __init__(self, ui, path=None, revs=None): """Initialize conversion source (or raise NoRepo("message") exception if path is not a valid repository)""" self.ui = ui self.path = path self.revs = revs self.encoding = 'utf-8' def checkhexformat(self, revstr, mapname='splicemap'): """ fails if revstr is not a 40 byte hex. mercurial and git both uses such format for their revision numbering """ if not re.match(r'[0-9a-fA-F]{40,40}$', revstr): raise error.Abort(_('%s entry %s is not a valid revision' ' identifier') % (mapname, revstr)) def before(self): pass def after(self): pass def targetfilebelongstosource(self, targetfilename): """Returns true if the given targetfile belongs to the source repo. This is useful when only a subdirectory of the target belongs to the source repo.""" # For normal full repo converts, this is always True. return True def setrevmap(self, revmap): """set the map of already-converted revisions""" pass def getheads(self): """Return a list of this repository's heads""" raise NotImplementedError def getfile(self, name, rev): """Return a pair (data, mode) where data is the file content as a string and mode one of '', 'x' or 'l'. rev is the identifier returned by a previous call to getchanges(). Data is None if file is missing/deleted in rev. """ raise NotImplementedError def getchanges(self, version, full): """Returns a tuple of (files, copies, cleanp2). files is a sorted list of (filename, id) tuples for all files changed between version and its first parent returned by getcommit(). If full, all files in that revision is returned. id is the source revision id of the file. copies is a dictionary of dest: source cleanp2 is the set of files filenames that are clean against p2. (Files that are clean against p1 are already not in files (unless full). This makes it possible to handle p2 clean files similarly.) """ raise NotImplementedError def getcommit(self, version): """Return the commit object for version""" raise NotImplementedError def numcommits(self): """Return the number of commits in this source. If unknown, return None. """ return None def gettags(self): """Return the tags as a dictionary of name: revision Tag names must be UTF-8 strings. """ raise NotImplementedError def recode(self, s, encoding=None): if not encoding: encoding = self.encoding or 'utf-8' if isinstance(s, unicode): return s.encode("utf-8") try: return s.decode(encoding).encode("utf-8") except UnicodeError: try: return s.decode("latin-1").encode("utf-8") except UnicodeError: return s.decode(encoding, "replace").encode("utf-8") def getchangedfiles(self, rev, i): """Return the files changed by rev compared to parent[i]. i is an index selecting one of the parents of rev. The return value should be the list of files that are different in rev and this parent. If rev has no parents, i is None. This function is only needed to support --filemap """ raise NotImplementedError def converted(self, rev, sinkrev): '''Notify the source that a revision has been converted.''' pass def hasnativeorder(self): """Return true if this source has a meaningful, native revision order. For instance, Mercurial revisions are store sequentially while there is no such global ordering with Darcs. """ return False def hasnativeclose(self): """Return true if this source has ability to close branch. """ return False def lookuprev(self, rev): """If rev is a meaningful revision reference in source, return the referenced identifier in the same format used by getcommit(). return None otherwise. """ return None def getbookmarks(self): """Return the bookmarks as a dictionary of name: revision Bookmark names are to be UTF-8 strings. """ return {} def checkrevformat(self, revstr, mapname='splicemap'): """revstr is a string that describes a revision in the given source control system. Return true if revstr has correct format. """ return True class converter_sink(object): """Conversion sink (target) interface""" def __init__(self, ui, path): """Initialize conversion sink (or raise NoRepo("message") exception if path is not a valid repository) created is a list of paths to remove if a fatal error occurs later""" self.ui = ui self.path = path self.created = [] def revmapfile(self): """Path to a file that will contain lines source_rev_id sink_rev_id mapping equivalent revision identifiers for each system.""" raise NotImplementedError def authorfile(self): """Path to a file that will contain lines srcauthor=dstauthor mapping equivalent authors identifiers for each system.""" return None def putcommit(self, files, copies, parents, commit, source, revmap, full, cleanp2): """Create a revision with all changed files listed in 'files' and having listed parents. 'commit' is a commit object containing at a minimum the author, date, and message for this changeset. 'files' is a list of (path, version) tuples, 'copies' is a dictionary mapping destinations to sources, 'source' is the source repository, and 'revmap' is a mapfile of source revisions to converted revisions. Only getfile() and lookuprev() should be called on 'source'. 'full' means that 'files' is complete and all other files should be removed. 'cleanp2' is a set of the filenames that are unchanged from p2 (only in the common merge case where there two parents). Note that the sink repository is not told to update itself to a particular revision (or even what that revision would be) before it receives the file data. """ raise NotImplementedError def puttags(self, tags): """Put tags into sink. tags: {tagname: sink_rev_id, ...} where tagname is an UTF-8 string. Return a pair (tag_revision, tag_parent_revision), or (None, None) if nothing was changed. """ raise NotImplementedError def setbranch(self, branch, pbranches): """Set the current branch name. Called before the first putcommit on the branch. branch: branch name for subsequent commits pbranches: (converted parent revision, parent branch) tuples""" pass def setfilemapmode(self, active): """Tell the destination that we're using a filemap Some converter_sources (svn in particular) can claim that a file was changed in a revision, even if there was no change. This method tells the destination that we're using a filemap and that it should filter empty revisions. """ pass def before(self): pass def after(self): pass def putbookmarks(self, bookmarks): """Put bookmarks into sink. bookmarks: {bookmarkname: sink_rev_id, ...} where bookmarkname is an UTF-8 string. """ pass def hascommitfrommap(self, rev): """Return False if a rev mentioned in a filemap is known to not be present.""" raise NotImplementedError def hascommitforsplicemap(self, rev): """This method is for the special needs for splicemap handling and not for general use. Returns True if the sink contains rev, aborts on some special cases.""" raise NotImplementedError class commandline(object): def __init__(self, ui, command): self.ui = ui self.command = command def prerun(self): pass def postrun(self): pass def _cmdline(self, cmd, *args, **kwargs): cmdline = [self.command, cmd] + list(args) for k, v in kwargs.iteritems(): if len(k) == 1: cmdline.append('-' + k) else: cmdline.append('--' + k.replace('_', '-')) try: if len(k) == 1: cmdline.append('' + v) else: cmdline[-1] += '=' + v except TypeError: pass cmdline = [util.shellquote(arg) for arg in cmdline] if not self.ui.debugflag: cmdline += ['2>', os.devnull] cmdline = ' '.join(cmdline) return cmdline def _run(self, cmd, *args, **kwargs): def popen(cmdline): p = subprocess.Popen(cmdline, shell=True, bufsize=-1, close_fds=util.closefds, stdout=subprocess.PIPE) return p return self._dorun(popen, cmd, *args, **kwargs) def _run2(self, cmd, *args, **kwargs): return self._dorun(util.popen2, cmd, *args, **kwargs) def _run3(self, cmd, *args, **kwargs): return self._dorun(util.popen3, cmd, *args, **kwargs) def _dorun(self, openfunc, cmd, *args, **kwargs): cmdline = self._cmdline(cmd, *args, **kwargs) self.ui.debug('running: %s\n' % (cmdline,)) self.prerun() try: return openfunc(cmdline) finally: self.postrun() def run(self, cmd, *args, **kwargs): p = self._run(cmd, *args, **kwargs) output = p.communicate()[0] self.ui.debug(output) return output, p.returncode def runlines(self, cmd, *args, **kwargs): p = self._run(cmd, *args, **kwargs) output = p.stdout.readlines() p.wait() self.ui.debug(''.join(output)) return output, p.returncode def checkexit(self, status, output=''): if status: if output: self.ui.warn(_('%s error:\n') % self.command) self.ui.warn(output) msg = util.explainexit(status)[0] raise error.Abort('%s %s' % (self.command, msg)) def run0(self, cmd, *args, **kwargs): output, status = self.run(cmd, *args, **kwargs) self.checkexit(status, output) return output def runlines0(self, cmd, *args, **kwargs): output, status = self.runlines(cmd, *args, **kwargs) self.checkexit(status, ''.join(output)) return output @propertycache def argmax(self): # POSIX requires at least 4096 bytes for ARG_MAX argmax = 4096 try: argmax = os.sysconf("SC_ARG_MAX") except (AttributeError, ValueError): pass # Windows shells impose their own limits on command line length, # down to 2047 bytes for cmd.exe under Windows NT/2k and 2500 bytes # for older 4nt.exe. See http://support.microsoft.com/kb/830473 for # details about cmd.exe limitations. # Since ARG_MAX is for command line _and_ environment, lower our limit # (and make happy Windows shells while doing this). return argmax // 2 - 1 def _limit_arglist(self, arglist, cmd, *args, **kwargs): cmdlen = len(self._cmdline(cmd, *args, **kwargs)) limit = self.argmax - cmdlen bytes = 0 fl = [] for fn in arglist: b = len(fn) + 3 if bytes + b < limit or len(fl) == 0: fl.append(fn) bytes += b else: yield fl fl = [fn] bytes = b if fl: yield fl def xargs(self, arglist, cmd, *args, **kwargs): for l in self._limit_arglist(arglist, cmd, *args, **kwargs): self.run0(cmd, *(list(args) + l), **kwargs) class mapfile(dict): def __init__(self, ui, path): super(mapfile, self).__init__() self.ui = ui self.path = path self.fp = None self.order = [] self._read() def _read(self): if not self.path: return try: fp = open(self.path, 'r') except IOError as err: if err.errno != errno.ENOENT: raise return for i, line in enumerate(util.iterfile(fp)): line = line.splitlines()[0].rstrip() if not line: # Ignore blank lines continue try: key, value = line.rsplit(' ', 1) except ValueError: raise error.Abort( _('syntax error in %s(%d): key/value pair expected') % (self.path, i + 1)) if key not in self: self.order.append(key) super(mapfile, self).__setitem__(key, value) fp.close() def __setitem__(self, key, value): if self.fp is None: try: self.fp = open(self.path, 'a') except IOError as err: raise error.Abort(_('could not open map file %r: %s') % (self.path, err.strerror)) self.fp.write('%s %s\n' % (key, value)) self.fp.flush() super(mapfile, self).__setitem__(key, value) def close(self): if self.fp: self.fp.close() self.fp = None def makedatetimestamp(t): """Like util.makedate() but for time t instead of current time""" delta = (datetime.datetime.utcfromtimestamp(t) - datetime.datetime.fromtimestamp(t)) tz = delta.days * 86400 + delta.seconds return t, tz