Mercurial > hg
view hgext/convert/common.py @ 7570:e05aa73ce2b7
use repo.wjoin(f) instead of os.path.join(repo.root, f)
author | Martin Geisler <mg@daimi.au.dk> |
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date | Fri, 02 Jan 2009 22:53:33 +0100 |
parents | f77c8d8331ca |
children | 878466138b57 |
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# common code for the convert extension import base64, errno import os import cPickle as pickle from mercurial import util, strutil from mercurial.i18n import _ 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.find_exe(exe): exc = abort and util.Abort or 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={}): self.author = author or 'unknown' self.date = date or '0 0' self.desc = desc self.parents = parents self.branch = branch self.rev = rev self.extra = extra class converter_source(object): """Conversion source interface""" def __init__(self, ui, path=None, rev=None): """Initialize conversion source (or raise NoRepo("message") exception if path is not a valid repository)""" self.ui = ui self.path = path self.rev = rev self.encoding = 'utf-8' def before(self): pass def after(self): pass 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 file contents as a string. rev is the identifier returned by a previous call to getchanges(). """ raise NotImplementedError() def getmode(self, name, rev): """Return file mode, eg. '', 'x', or 'l'. rev is the identifier returned by a previous call to getchanges(). """ raise NotImplementedError() def getchanges(self, version): """Returns a tuple of (files, copies). files is a sorted list of (filename, id) tuples for all files changed between version and it's first parent returned by getcommit(). id is the source revision id of the file. copies is a dictionary of dest: source """ raise NotImplementedError() def getcommit(self, version): """Return the commit object for version""" raise NotImplementedError() def gettags(self): """Return the tags as a dictionary of name: revision""" 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: try: return s.decode("latin-1").encode("utf-8") except: 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 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 getheads(self): """Return a list of this repository's heads""" raise NotImplementedError() 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): """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, and 'source' is the source repository. Only getfile() and getmode() should be called on 'source'. 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, ...}""" 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 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] cmdline += ['2>', util.nulldev, '<', util.nulldev] cmdline = ' '.join(cmdline) return cmdline def _run(self, cmd, *args, **kwargs): cmdline = self._cmdline(cmd, *args, **kwargs) self.ui.debug(_('running: %s\n') % (cmdline,)) self.prerun() try: return util.popen(cmdline) finally: self.postrun() def run(self, cmd, *args, **kwargs): fp = self._run(cmd, *args, **kwargs) output = fp.read() self.ui.debug(output) return output, fp.close() def runlines(self, cmd, *args, **kwargs): fp = self._run(cmd, *args, **kwargs) output = fp.readlines() self.ui.debug(''.join(output)) return output, fp.close() def checkexit(self, status, output=''): if status: if output: self.ui.warn(_('%s error:\n') % self.command) self.ui.warn(output) msg = util.explain_exit(status)[0] raise util.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 def getargmax(self): if '_argmax' in self.__dict__: return self._argmax # POSIX requires at least 4096 bytes for ARG_MAX self._argmax = 4096 try: self._argmax = os.sysconf("SC_ARG_MAX") except: 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). self._argmax = self._argmax/2 - 1 return self._argmax def limit_arglist(self, arglist, cmd, *args, **kwargs): limit = self.getargmax() - len(self._cmdline(cmd, *args, **kwargs)) 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 self.path is None: return try: fp = open(self.path, 'r') except IOError, err: if err.errno != errno.ENOENT: raise return for line in fp: key, value = strutil.rsplit(line[:-1], ' ', 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, err: raise util.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