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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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from __future__ import annotations
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import os
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from mercurial.i18n import _
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from mercurial.node import (
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nullrev,
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short,
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)
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from mercurial import (
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commands,
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obsolete,
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patch,
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pycompat,
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registrar,
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scmutil,
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)
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cmdtable = {}
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command = registrar.command(cmdtable)
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# Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' 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 = b'ships-with-hg-core'
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configtable = {}
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configitem = registrar.configitem(configtable)
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configitem(
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b'hgk',
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b'path',
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default=b'hgk',
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)
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@command(
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b'debug-diff-tree',
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[
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(b'p', b'patch', None, _(b'generate patch')),
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(b'r', b'recursive', None, _(b'recursive')),
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(b'P', b'pretty', None, _(b'pretty')),
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(b's', b'stdin', None, _(b'stdin')),
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(b'C', b'copy', None, _(b'detect copies')),
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(b'S', b'search', b"", _(b'search')),
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],
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b'[OPTION]... NODE1 NODE2 [FILE]...',
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inferrepo=True,
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)
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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=None):
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assert node2 is not None
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if files is None:
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files = []
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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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st = repo.status(node1, node2, m)
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empty = short(repo.nullid)
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for f in st.modified:
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# TODO get file permissions
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ui.writenoi18n(
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b":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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)
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for f in st.added:
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ui.writenoi18n(
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b":000000 100664 %s %s N\t%s\t%s\n"
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% (empty, short(mmap2[f]), f, f)
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)
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for f in st.removed:
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ui.writenoi18n(
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b":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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##
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while True:
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if opts['stdin']:
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line = ui.fin.readline()
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if not line:
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break
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line = line.rstrip(pycompat.oslinesep).split(b' ')
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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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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, b"")
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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, 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 = b'\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((b"tree %s\n" % short(ctx.changeset()[0])))
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for p in ctx.parents():
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ui.write((b"parent %s\n" % p))
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date = ctx.date()
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description = ctx.description().replace(b"\0", b"")
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ui.write((b"author %s %d %d\n" % (ctx.user(), int(date[0]), date[1])))
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if b'committer' in ctx.extra():
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ui.write((b"committer %s\n" % ctx.extra()[b'committer']))
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ui.write((b"revision %d\n" % ctx.rev()))
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ui.write((b"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.writenoi18n(b"obsolete\n")
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ui.write((b"phase %s\n\n" % ctx.phasestr()))
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if prefix != b"":
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ui.write(
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b"%s%s\n" % (prefix, description.replace(b'\n', nlprefix).strip())
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)
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else:
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ui.write(description + b"\n")
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if prefix:
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ui.write(b'\0')
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@command(b'debug-merge-base', [], _(b'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) + b"\n")
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@command(
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b'debug-cat-file',
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[(b's', b'stdin', None, _(b'stdin'))],
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_(b'[OPTION]... TYPE FILE'),
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inferrepo=True,
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)
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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 = b""
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if opts['stdin']:
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line = ui.fin.readline()
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if not line:
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return
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(type, r) = line.rstrip(pycompat.oslinesep).split(b' ')
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prefix = b" "
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else:
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if not type or not r:
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ui.warn(_(b"cat-file: type or revision not supplied\n"))
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commands.help_(ui, b'cat-file')
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while r:
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if type != b"commit":
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ui.warn(_(b"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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line = ui.fin.readline()
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if not line:
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break
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(type, r) = line.rstrip(pycompat.oslinesep).split(b' ')
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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=b"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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while True:
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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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for x in range(chunk):
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if i + x >= count:
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l[chunk - x :] = [0] * (chunk - x)
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break
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if full is not None:
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if (i + x) in repo:
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l[x] = repo[i + x]
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l[x].changeset() # force reading
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else:
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if (i + x) in repo:
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l[x] = 1
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for x in range(chunk - 1, -1, -1):
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if l[x] != 0:
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yield (i + x, full is not None and l[x] or None)
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if i == 0:
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break
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# calculate and return the reachability bitmask for sha
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def is_reachable(ar, reachable, sha):
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if len(ar) == 0:
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return 1
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mask = 0
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for i in range(len(ar)):
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if sha in reachable[i]:
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mask |= 1 << i
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return mask
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reachable = []
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stop_sha1 = []
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want_sha1 = []
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count = 0
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# figure out which commits they are asking for and which ones they
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# want us to stop on
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for i, arg in enumerate(args):
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if arg.startswith(b'^'):
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s = repo.lookup(arg[1:])
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stop_sha1.append(s)
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want_sha1.append(s)
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elif arg != b'HEAD':
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want_sha1.append(repo.lookup(arg))
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# calculate the graph for the supplied commits
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for i, n in enumerate(want_sha1):
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reachable.append(set())
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visit = [n]
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reachable[i].add(n)
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while visit:
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n = visit.pop(0)
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if n in stop_sha1:
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continue
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for p in repo.changelog.parents(n):
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if p not in reachable[i]:
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reachable[i].add(p)
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visit.append(p)
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if p in stop_sha1:
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continue
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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 = b""
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if parents:
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pp = repo.changelog.parents(n)
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if pp[0] != repo.nullid:
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parentstr += b" " + short(pp[0])
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if pp[1] != repo.nullid:
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parentstr += b" " + short(pp[1])
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if not full:
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ui.write(b"%s%s\n" % (short(n), parentstr))
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elif full == b"commit":
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ui.write(b"%s%s\n" % (short(n), parentstr))
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catcommit(ui, repo, n, b' ', 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(b"%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(b"%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(b"%s:%s " % (h2, mask))
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ui.write(b"\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(
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b'debug-rev-list',
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[
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(b'H', b'header', None, _(b'header')),
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(b't', b'topo-order', None, _(b'topo-order')),
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(b'p', b'parents', None, _(b'parents')),
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(b'n', b'max-count', 0, _(b'max-count')),
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],
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b'[OPTION]... REV...',
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)
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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 = b"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[r'parents'])
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@command(
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b'view',
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[(b'l', b'limit', b'', _(b'limit number of changes displayed'), _(b'NUM'))],
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_(b'[-l LIMIT] [REVRANGE]'),
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helpcategory=command.CATEGORY_CHANGE_NAVIGATION,
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)
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def view(ui, repo, *etc, **opts):
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"""start interactive history viewer"""
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opts = pycompat.byteskwargs(opts)
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os.chdir(repo.root)
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optstr = b' '.join([b'--%s %s' % (k, v) for k, v in opts.items() if v])
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if repo.filtername is None:
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optstr += b'--hidden'
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cmd = ui.config(b"hgk", b"path") + b" %s %s" % (optstr, b" ".join(etc))
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ui.debug(b"running %s\n" % cmd)
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ui.system(cmd, blockedtag=b'hgk_view')
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