view hgext/convert/p4.py @ 21077:78b15ad2f968

convert: backout 81cf597dafa9 and a3545c3104aa -closemap

Closemap solves a very specific use case. It would be better to have a more
generic solution than to have to maintain this forever.

Closemap has not been released yet and removing it now will not break any
backward compatibility contract.

There is no test coverage for closemap but it seems like the same can be
achieved with a simple and much more powerful custom extension:

import hgext.convert.hg
class source(hgext.convert.hg.mercurial_source):
    def getcommit(self, rev):
        c = super(source, self).getcommit(rev)
        if rev in ['''
d643f67092ff123f6a192d52f12e7d123dae229f
9117c6561b0bd7792fa13b50d28239d51b78e51f
f368a1c302d5b87506f7edb13769e591e063d7ea
''']:
            c.extra = c.extra.copy()
            c.extra['close'] = '1'
        return c
hgext.convert.hg.mercurial_source = source

# Perforce source for convert extension.
#
# Copyright 2009, Frank Kingswood <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

from mercurial import util
from mercurial.i18n import _

from common import commit, converter_source, checktool, NoRepo
import marshal
import re

def loaditer(f):
    "Yield the dictionary objects generated by p4"
    try:
        while True:
            d = marshal.load(f)
            if not d:
                break
            yield d
    except EOFError:
        pass

class p4_source(converter_source):
    def __init__(self, ui, path, rev=None):
        super(p4_source, self).__init__(ui, path, rev=rev)

        if "/" in path and not path.startswith('//'):
            raise NoRepo(_('%s does not look like a P4 repository') % path)

        checktool('p4', abort=False)

        self.p4changes = {}
        self.heads = {}
        self.changeset = {}
        self.files = {}
        self.tags = {}
        self.lastbranch = {}
        self.parent = {}
        self.encoding = "latin_1"
        self.depotname = {}           # mapping from local name to depot name
        self.re_type = re.compile(
            "([a-z]+)?(text|binary|symlink|apple|resource|unicode|utf\d+)"
            "(\+\w+)?$")
        self.re_keywords = re.compile(
            r"\$(Id|Header|Date|DateTime|Change|File|Revision|Author)"
            r":[^$\n]*\$")
        self.re_keywords_old = re.compile("\$(Id|Header):[^$\n]*\$")

        self._parse(ui, path)

    def _parse_view(self, path):
        "Read changes affecting the path"
        cmd = 'p4 -G changes -s submitted %s' % util.shellquote(path)
        stdout = util.popen(cmd, mode='rb')
        for d in loaditer(stdout):
            c = d.get("change", None)
            if c:
                self.p4changes[c] = True

    def _parse(self, ui, path):
        "Prepare list of P4 filenames and revisions to import"
        ui.status(_('reading p4 views\n'))

        # read client spec or view
        if "/" in path:
            self._parse_view(path)
            if path.startswith("//") and path.endswith("/..."):
                views = {path[:-3]:""}
            else:
                views = {"//": ""}
        else:
            cmd = 'p4 -G client -o %s' % util.shellquote(path)
            clientspec = marshal.load(util.popen(cmd, mode='rb'))

            views = {}
            for client in clientspec:
                if client.startswith("View"):
                    sview, cview = clientspec[client].split()
                    self._parse_view(sview)
                    if sview.endswith("...") and cview.endswith("..."):
                        sview = sview[:-3]
                        cview = cview[:-3]
                    cview = cview[2:]
                    cview = cview[cview.find("/") + 1:]
                    views[sview] = cview

        # list of changes that affect our source files
        self.p4changes = self.p4changes.keys()
        self.p4changes.sort(key=int)

        # list with depot pathnames, longest first
        vieworder = views.keys()
        vieworder.sort(key=len, reverse=True)

        # handle revision limiting
        startrev = self.ui.config('convert', 'p4.startrev', default=0)
        self.p4changes = [x for x in self.p4changes
                          if ((not startrev or int(x) >= int(startrev)) and
                              (not self.rev or int(x) <= int(self.rev)))]

        # now read the full changelists to get the list of file revisions
        ui.status(_('collecting p4 changelists\n'))
        lastid = None
        for change in self.p4changes:
            cmd = "p4 -G describe -s %s" % change
            stdout = util.popen(cmd, mode='rb')
            d = marshal.load(stdout)
            desc = self.recode(d["desc"])
            shortdesc = desc.split("\n", 1)[0]
            t = '%s %s' % (d["change"], repr(shortdesc)[1:-1])
            ui.status(util.ellipsis(t, 80) + '\n')

            if lastid:
                parents = [lastid]
            else:
                parents = []

            date = (int(d["time"]), 0)     # timezone not set
            c = commit(author=self.recode(d["user"]),
                       date=util.datestr(date, '%Y-%m-%d %H:%M:%S %1%2'),
                       parents=parents, desc=desc, branch='',
                       extra={"p4": change})

            files = []
            i = 0
            while ("depotFile%d" % i) in d and ("rev%d" % i) in d:
                oldname = d["depotFile%d" % i]
                filename = None
                for v in vieworder:
                    if oldname.startswith(v):
                        filename = views[v] + oldname[len(v):]
                        break
                if filename:
                    files.append((filename, d["rev%d" % i]))
                    self.depotname[filename] = oldname
                i += 1
            self.changeset[change] = c
            self.files[change] = files
            lastid = change

        if lastid:
            self.heads = [lastid]

    def getheads(self):
        return self.heads

    def getfile(self, name, rev):
        cmd = 'p4 -G print %s' \
            % util.shellquote("%s#%s" % (self.depotname[name], rev))
        stdout = util.popen(cmd, mode='rb')

        mode = None
        contents = ""
        keywords = None

        for d in loaditer(stdout):
            code = d["code"]
            data = d.get("data")

            if code == "error":
                raise IOError(d["generic"], data)

            elif code == "stat":
                p4type = self.re_type.match(d["type"])
                if p4type:
                    mode = ""
                    flags = (p4type.group(1) or "") + (p4type.group(3) or "")
                    if "x" in flags:
                        mode = "x"
                    if p4type.group(2) == "symlink":
                        mode = "l"
                    if "ko" in flags:
                        keywords = self.re_keywords_old
                    elif "k" in flags:
                        keywords = self.re_keywords

            elif code == "text" or code == "binary":
                contents += data

        if mode is None:
            raise IOError(0, "bad stat")

        if keywords:
            contents = keywords.sub("$\\1$", contents)
        if mode == "l" and contents.endswith("\n"):
            contents = contents[:-1]

        return contents, mode

    def getchanges(self, rev):
        return self.files[rev], {}

    def getcommit(self, rev):
        return self.changeset[rev]

    def gettags(self):
        return self.tags

    def getchangedfiles(self, rev, i):
        return sorted([x[0] for x in self.files[rev]])