hgext/hgk.py
author Gregory Szorc <gregory.szorc@gmail.com>
Sat, 08 Aug 2015 18:52:59 -0700
changeset 25994 d6beeb618700
parent 25793 084957666642
child 29125 9b12517a7081
permissions -rw-r--r--
win32: use absolute_import
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# Minimal support for git commands on an hg repository
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#
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# Copyright 2005, 2006 Chris Mason <mason@suse.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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'''browse the repository in a graphical way
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The hgk extension allows browsing the history of a repository in a
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graphical way. It requires Tcl/Tk version 8.4 or later. (Tcl/Tk is not
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distributed with Mercurial.)
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hgk consists of two parts: a Tcl script that does the displaying and
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querying of information, and an extension to Mercurial named hgk.py,
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which provides hooks for hgk to get information. hgk can be found in
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the contrib directory, and the extension is shipped in the hgext
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repository, and needs to be enabled.
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The :hg:`view` command will launch the hgk Tcl script. For this command
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to work, hgk must be in your search path. Alternately, you can specify
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the path to hgk in your configuration file::
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  [hgk]
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  path = /location/of/hgk
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hgk can make use of the extdiff extension to visualize revisions.
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Assuming you had already configured extdiff vdiff command, just add::
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  [hgk]
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  vdiff=vdiff
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Revisions context menu will now display additional entries to fire
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vdiff on hovered and selected revisions.
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'''
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import os
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from mercurial import cmdutil, commands, patch, scmutil, obsolete
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from mercurial.node import nullid, nullrev, short
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from mercurial.i18n import _
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cmdtable = {}
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command = cmdutil.command(cmdtable)
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# Note for extension authors: ONLY specify testedwith = 'internal' for
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# extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
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# be specifying the version(s) of Mercurial they are tested with, or
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# leave the attribute unspecified.
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testedwith = 'internal'
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@command('debug-diff-tree',
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    [('p', 'patch', None, _('generate patch')),
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    ('r', 'recursive', None, _('recursive')),
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    ('P', 'pretty', None, _('pretty')),
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    ('s', 'stdin', None, _('stdin')),
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    ('C', 'copy', None, _('detect copies')),
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    ('S', 'search', "", _('search'))],
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    ('[OPTION]... NODE1 NODE2 [FILE]...'),
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    inferrepo=True)
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def difftree(ui, repo, node1=None, node2=None, *files, **opts):
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    """diff trees from two commits"""
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    def __difftree(repo, node1, node2, files=[]):
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        assert node2 is not None
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        mmap = repo[node1].manifest()
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        mmap2 = repo[node2].manifest()
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        m = scmutil.match(repo[node1], files)
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        modified, added, removed  = repo.status(node1, node2, m)[:3]
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        empty = short(nullid)
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        for f in modified:
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            # TODO get file permissions
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            ui.write(":100664 100664 %s %s M\t%s\t%s\n" %
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                     (short(mmap[f]), short(mmap2[f]), f, f))
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        for f in added:
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            ui.write(":000000 100664 %s %s N\t%s\t%s\n" %
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                     (empty, short(mmap2[f]), f, f))
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        for f in removed:
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            ui.write(":100664 000000 %s %s D\t%s\t%s\n" %
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                     (short(mmap[f]), empty, f, f))
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    ##
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    while True:
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        if opts['stdin']:
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            try:
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                line = raw_input().split(' ')
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                node1 = line[0]
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                if len(line) > 1:
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                    node2 = line[1]
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                else:
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                    node2 = None
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            except EOFError:
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                break
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        node1 = repo.lookup(node1)
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        if node2:
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            node2 = repo.lookup(node2)
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        else:
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            node2 = node1
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            node1 = repo.changelog.parents(node1)[0]
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        if opts['patch']:
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            if opts['pretty']:
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                catcommit(ui, repo, node2, "")
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            m = scmutil.match(repo[node1], files)
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            diffopts = patch.difffeatureopts(ui)
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            diffopts.git = True
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            chunks = patch.diff(repo, node1, node2, match=m,
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                                opts=diffopts)
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            for chunk in chunks:
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                ui.write(chunk)
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        else:
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            __difftree(repo, node1, node2, files=files)
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        if not opts['stdin']:
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            break
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def catcommit(ui, repo, n, prefix, ctx=None):
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    nlprefix = '\n' + prefix
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    if ctx is None:
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        ctx = repo[n]
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    # use ctx.node() instead ??
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    ui.write(("tree %s\n" % short(ctx.changeset()[0])))
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    for p in ctx.parents():
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        ui.write(("parent %s\n" % p))
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    date = ctx.date()
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    description = ctx.description().replace("\0", "")
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    ui.write(("author %s %s %s\n" % (ctx.user(), int(date[0]), date[1])))
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    if 'committer' in ctx.extra():
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        ui.write(("committer %s\n" % ctx.extra()['committer']))
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    ui.write(("revision %d\n" % ctx.rev()))
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    ui.write(("branch %s\n" % ctx.branch()))
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    if obsolete.isenabled(repo, obsolete.createmarkersopt):
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        if ctx.obsolete():
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            ui.write(("obsolete\n"))
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    ui.write(("phase %s\n\n" % ctx.phasestr()))
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    if prefix != "":
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        ui.write("%s%s\n" % (prefix,
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                             description.replace('\n', nlprefix).strip()))
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    else:
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        ui.write(description + "\n")
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    if prefix:
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        ui.write('\0')
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@command('debug-merge-base', [], _('REV REV'))
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def base(ui, repo, node1, node2):
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    """output common ancestor information"""
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    node1 = repo.lookup(node1)
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    node2 = repo.lookup(node2)
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    n = repo.changelog.ancestor(node1, node2)
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    ui.write(short(n) + "\n")
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@command('debug-cat-file',
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    [('s', 'stdin', None, _('stdin'))],
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    _('[OPTION]... TYPE FILE'),
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    inferrepo=True)
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def catfile(ui, repo, type=None, r=None, **opts):
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    """cat a specific revision"""
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    # in stdin mode, every line except the commit is prefixed with two
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    # spaces.  This way the our caller can find the commit without magic
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    # strings
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    #
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    prefix = ""
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    if opts['stdin']:
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        try:
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            (type, r) = raw_input().split(' ')
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            prefix = "    "
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        except EOFError:
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            return
267
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    else:
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        if not type or not r:
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            ui.warn(_("cat-file: type or revision not supplied\n"))
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            commands.help_(ui, 'cat-file')
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    while r:
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        if type != "commit":
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            ui.warn(_("aborting hg cat-file only understands commits\n"))
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            return 1
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        n = repo.lookup(r)
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        catcommit(ui, repo, n, prefix)
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        if opts['stdin']:
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            try:
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                (type, r) = raw_input().split(' ')
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            except EOFError:
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                break
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        else:
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            break
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# git rev-tree is a confusing thing.  You can supply a number of
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# commit sha1s on the command line, and it walks the commit history
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# telling you which commits are reachable from the supplied ones via
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# a bitmask based on arg position.
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# you can specify a commit to stop at by starting the sha1 with ^
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def revtree(ui, args, repo, full="tree", maxnr=0, parents=False):
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    def chlogwalk():
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        count = len(repo)
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        i = count
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        l = [0] * 100
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        chunk = 100
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   200
        while True:
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   201
            if chunk > i:
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                chunk = i
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                i = 0
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            else:
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                i -= chunk
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   206
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2b3dec0ef3ae replace xrange(0, n) with xrange(n)
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            for x in xrange(chunk):
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                if i + x >= count:
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   209
                    l[chunk - x:] = [0] * (chunk - x)
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                    break
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3da456d0c885 code style: prefer 'is' and 'is not' tests with singletons
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   211
                if full is not None:
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   212
                    if (i + x) in repo:
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   213
                        l[x] = repo[i + x]
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   214
                        l[x].changeset() # force reading
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   215
                else:
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diff changeset
   216
                    if (i + x) in repo:
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   217
                        l[x] = 1
10282
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   218
            for x in xrange(chunk - 1, -1, -1):
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   219
                if l[x] != 0:
13031
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diff changeset
   220
                    yield (i + x, full is not None and l[x] or None)
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   221
            if i == 0:
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   222
                break
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2073e5a71008 Cleanup of tabs and trailing spaces.
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parents: 1278
diff changeset
   223
267
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   224
    # calculate and return the reachability bitmask for sha
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   225
    def is_reachable(ar, reachable, sha):
334
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   226
        if len(ar) == 0:
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   227
            return 1
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   228
        mask = 0
3473
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diff changeset
   229
        for i in xrange(len(ar)):
334
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diff changeset
   230
            if sha in reachable[i]:
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diff changeset
   231
                mask |= 1 << i
267
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   232
334
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   233
        return mask
267
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   234
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   235
    reachable = []
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   236
    stop_sha1 = []
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   237
    want_sha1 = []
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   238
    count = 0
267
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   239
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   240
    # figure out which commits they are asking for and which ones they
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   241
    # want us to stop on
8632
9e055cfdd620 replace "i in range(len(xs))" with "i, x in enumerate(xs)"
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   242
    for i, arg in enumerate(args):
9e055cfdd620 replace "i in range(len(xs))" with "i, x in enumerate(xs)"
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   243
        if arg.startswith('^'):
9e055cfdd620 replace "i in range(len(xs))" with "i, x in enumerate(xs)"
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   244
            s = repo.lookup(arg[1:])
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   245
            stop_sha1.append(s)
334
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diff changeset
   246
            want_sha1.append(s)
8632
9e055cfdd620 replace "i in range(len(xs))" with "i, x in enumerate(xs)"
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diff changeset
   247
        elif arg != 'HEAD':
9e055cfdd620 replace "i in range(len(xs))" with "i, x in enumerate(xs)"
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   248
            want_sha1.append(repo.lookup(arg))
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diff changeset
   249
267
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    # calculate the graph for the supplied commits
8632
9e055cfdd620 replace "i in range(len(xs))" with "i, x in enumerate(xs)"
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diff changeset
   251
    for i, n in enumerate(want_sha1):
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   252
        reachable.append(set())
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   253
        visit = [n]
8459
1e63816ce8a2 hgk: use set instead of dict
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diff changeset
   254
        reachable[i].add(n)
334
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diff changeset
   255
        while visit:
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diff changeset
   256
            n = visit.pop(0)
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   257
            if n in stop_sha1:
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   258
                continue
334
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diff changeset
   259
            for p in repo.changelog.parents(n):
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   260
                if p not in reachable[i]:
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1e63816ce8a2 hgk: use set instead of dict
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   261
                    reachable[i].add(p)
334
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diff changeset
   262
                    visit.append(p)
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   263
                if p in stop_sha1:
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   264
                    continue
356
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    # walk the repository looking for commits that are in our
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    # reachability graph
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    for i, ctx in chlogwalk():
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        if i not in repo:
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            continue
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        n = repo.changelog.node(i)
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        mask = is_reachable(want_sha1, reachable, n)
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        if mask:
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            parentstr = ""
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            if parents:
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                pp = repo.changelog.parents(n)
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                if pp[0] != nullid:
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                    parentstr += " " + short(pp[0])
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                if pp[1] != nullid:
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                    parentstr += " " + short(pp[1])
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            if not full:
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                ui.write("%s%s\n" % (short(n), parentstr))
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            elif full == "commit":
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                ui.write("%s%s\n" % (short(n), parentstr))
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                catcommit(ui, repo, n, '    ', ctx)
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            else:
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                (p1, p2) = repo.changelog.parents(n)
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                (h, h1, h2) = map(short, (n, p1, p2))
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                (i1, i2) = map(repo.changelog.rev, (p1, p2))
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                date = ctx.date()[0]
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                ui.write("%s %s:%s" % (date, h, mask))
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                mask = is_reachable(want_sha1, reachable, p1)
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                if i1 != nullrev and mask > 0:
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                    ui.write("%s:%s " % (h1, mask)),
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                mask = is_reachable(want_sha1, reachable, p2)
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                if i2 != nullrev and mask > 0:
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                    ui.write("%s:%s " % (h2, mask))
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                ui.write("\n")
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            if maxnr and count >= maxnr:
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                break
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            count += 1
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# git rev-list tries to order things by date, and has the ability to stop
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# at a given commit without walking the whole repo.  TODO add the stop
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# parameter
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@command('debug-rev-list',
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    [('H', 'header', None, _('header')),
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    ('t', 'topo-order', None, _('topo-order')),
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    ('p', 'parents', None, _('parents')),
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    ('n', 'max-count', 0, _('max-count'))],
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    ('[OPTION]... REV...'))
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def revlist(ui, repo, *revs, **opts):
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    """print revisions"""
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    if opts['header']:
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        full = "commit"
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    else:
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        full = None
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    copy = [x for x in revs]
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    revtree(ui, copy, repo, full, opts['max_count'], opts['parents'])
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@command('view',
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    [('l', 'limit', '',
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     _('limit number of changes displayed'), _('NUM'))],
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    _('[-l LIMIT] [REVRANGE]'))
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   326
def view(ui, repo, *etc, **opts):
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    "start interactive history viewer"
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    os.chdir(repo.root)
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   329
    optstr = ' '.join(['--%s %s' % (k, v) for k, v in opts.iteritems() if v])
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    if repo.filtername is None:
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        optstr += '--hidden'
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   332
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   333
    cmd = ui.config("hgk", "path", "hgk") + " %s %s" % (optstr, " ".join(etc))
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   334
    ui.debug("running %s\n" % cmd)
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   335
    ui.system(cmd)