mercurial/cmdutil.py

24271:18792f2e38bb

# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

from node import hex, nullid, nullrev, short
from i18n import _
import os, sys, errno, re, tempfile
import util, scmutil, templater, patch, error, templatekw, revlog, copies
import match as matchmod
import context, repair, graphmod, revset, phases, obsolete, pathutil
import changelog
import bookmarks
import encoding
import lock as lockmod

def parsealiases(cmd):
    return cmd.lstrip("^").split("|")

def findpossible(cmd, table, strict=False):
    """
    Return cmd -> (aliases, command table entry)
    for each matching command.

24272:26a1c617e047

# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

from node import hex, nullid, nullrev, short
from i18n import _
import os, sys, errno, re, tempfile, cStringIO, shutil
import util, scmutil, templater, patch, error, templatekw, revlog, copies
import match as matchmod
import context, repair, graphmod, revset, phases, obsolete, pathutil
import changelog
import bookmarks
import encoding
import lock as lockmod

def parsealiases(cmd):
    return cmd.lstrip("^").split("|")

def dorecord(ui, repo, commitfunc, cmdsuggest, backupall, *pats, **opts):
    import merge as mergemod
    if not ui.interactive():
        raise util.Abort(_('running non-interactively, use %s instead') %
                         cmdsuggest)

    # make sure username is set before going interactive
    if not opts.get('user'):
        ui.username() # raise exception, username not provided

    def recordfunc(ui, repo, message, match, opts):
        """This is generic record driver.

        Its job is to interactively filter local changes, and
        accordingly prepare working directory into a state in which the
        job can be delegated to a non-interactive commit command such as
        'commit' or 'qrefresh'.

        After the actual job is done by non-interactive command, the
        working directory is restored to its original state.

        In the end we'll record interesting changes, and everything else
        will be left in place, so the user can continue working.
        """

        checkunfinished(repo, commit=True)
        merge = len(repo[None].parents()) > 1
        if merge:
            raise util.Abort(_('cannot partially commit a merge '
                               '(use "hg commit" instead)'))

        status = repo.status(match=match)
        diffopts = patch.difffeatureopts(ui, opts=opts, whitespace=True)
        diffopts.nodates = True
        diffopts.git = True
        originalchunks = patch.diff(repo, changes=status, opts=diffopts)
        fp = cStringIO.StringIO()
        fp.write(''.join(originalchunks))
        fp.seek(0)

        # 1. filter patch, so we have intending-to apply subset of it
        try:
            chunks = patch.filterpatch(ui, patch.parsepatch(fp))
        except patch.PatchError, err:
            raise util.Abort(_('error parsing patch: %s') % err)

        del fp

        contenders = set()
        for h in chunks:
            try:
                contenders.update(set(h.files()))
            except AttributeError:
                pass

        changed = status.modified + status.added + status.removed
        newfiles = [f for f in changed if f in contenders]
        if not newfiles:
            ui.status(_('no changes to record\n'))
            return 0

        newandmodifiedfiles = set()
        for h in chunks:
            ishunk = isinstance(h, patch.recordhunk)
            isnew = h.filename() in status.added
            if ishunk and isnew and not h in originalchunks:
                newandmodifiedfiles.add(h.filename())

        modified = set(status.modified)

        # 2. backup changed files, so we can restore them in the end

        if backupall:
            tobackup = changed
        else:
            tobackup = [f for f in newfiles
                        if f in modified or f in newandmodifiedfiles]

        backups = {}
        if tobackup:
            backupdir = repo.join('record-backups')
            try:
                os.mkdir(backupdir)
            except OSError, err:
                if err.errno != errno.EEXIST:
                    raise
        try:
            # backup continues
            for f in tobackup:
                fd, tmpname = tempfile.mkstemp(prefix=f.replace('/', '_')+'.',
                                               dir=backupdir)
                os.close(fd)
                ui.debug('backup %r as %r\n' % (f, tmpname))
                util.copyfile(repo.wjoin(f), tmpname)
                shutil.copystat(repo.wjoin(f), tmpname)
                backups[f] = tmpname

            fp = cStringIO.StringIO()
            for c in chunks:
                fname = c.filename()
                if fname in backups or fname in newandmodifiedfiles:
                    c.write(fp)
            dopatch = fp.tell()
            fp.seek(0)

            [os.unlink(c) for c in newandmodifiedfiles]

            # 3a. apply filtered patch to clean repo  (clean)
            if backups:
                # Equivalent to hg.revert
                choices = lambda key: key in backups
                mergemod.update(repo, repo.dirstate.p1(),
                        False, True, choices)


            # 3b. (apply)
            if dopatch:
                try:
                    ui.debug('applying patch\n')
                    ui.debug(fp.getvalue())
                    patch.internalpatch(ui, repo, fp, 1, eolmode=None)
                except patch.PatchError, err:
                    raise util.Abort(str(err))
            del fp

            # 4. We prepared working directory according to filtered
            #    patch. Now is the time to delegate the job to
            #    commit/qrefresh or the like!

            # Make all of the pathnames absolute.
            newfiles = [repo.wjoin(nf) for nf in newfiles]
            commitfunc(ui, repo, *newfiles, **opts)

            return 0
        finally:
            # 5. finally restore backed-up files
            try:
                for realname, tmpname in backups.iteritems():
                    ui.debug('restoring %r to %r\n' % (tmpname, realname))
                    util.copyfile(tmpname, repo.wjoin(realname))
                    # Our calls to copystat() here and above are a
                    # hack to trick any editors that have f open that
                    # we haven't modified them.
                    #
                    # Also note that this racy as an editor could
                    # notice the file's mtime before we've finished
                    # writing it.
                    shutil.copystat(tmpname, repo.wjoin(realname))
                    os.unlink(tmpname)
                if tobackup:
                    os.rmdir(backupdir)
            except OSError:
                pass

    # wrap ui.write so diff output can be labeled/colorized
    def wrapwrite(orig, *args, **kw):
        label = kw.pop('label', '')
        for chunk, l in patch.difflabel(lambda: args):
            orig(chunk, label=label + l)

    oldwrite = ui.write
    def wrap(*args, **kwargs):
        return wrapwrite(oldwrite, *args, **kwargs)
    setattr(ui, 'write', wrap)

    try:
        return commit(ui, repo, recordfunc, pats, opts)
    finally:
        ui.write = oldwrite


def findpossible(cmd, table, strict=False):
    """
    Return cmd -> (aliases, command table entry)
    for each matching command.