Mercurial > hg
view hgext/convert/common.py @ 6421:ecde0baee570
churn: allow whitespaces as delimiter in aliases
it was exactly on space character before.
author | Kirill Smelkov <kirr@mns.spb.ru> |
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date | Fri, 28 Mar 2008 11:17:10 +0300 |
parents | 950e72fc7cf3 |
children | c9b8d2565b92 93b03f1be289 |
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# common code for the convert extension import base64, errno import os import cPickle as pickle from mercurial import util 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""" raise NotImplementedError() def getmode(self, name, rev): """Return file mode, eg. '', 'x', or 'l'""" 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 in version, where 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 putfile(self, f, e, data): """Put file for next putcommit(). f: path to file e: '', 'x', or 'l' (regular file, executable, or symlink) data: file contents""" raise NotImplementedError() def delfile(self, f): """Delete file for next putcommit(). f: path to file""" raise NotImplementedError() def putcommit(self, files, parents, commit): """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. Called after putfile() and delfile() calls. 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 putfile 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) self.ui.debug(cmdline, '\n') return cmdline def _run(self, cmd, *args, **kwargs): cmdline = self._cmdline(cmd, *args, **kwargs) 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 = line[:-1].split(' ', 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