view hgext/convert/p4.py @ 17551:a7b3fdaf768d

bookmark: take successors into account when updating (issue3561)

When we rewrite a bookmarked changeset, we want to update the
bookmark on its successors. But the successors are not descendants
of its precursor (by definition). This changeset alters the bookmarks
logic to update bookmark location if the newer location is a successor
of the old one[1].

note: valid destinations are in fact any kind of successors of any kind
      of descendants (recursively.)

This changeset requires the enabling of the obsolete feature in
some bookmark tests.

# 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]])