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# absorb.py
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#
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# Copyright 2016 Facebook, Inc.
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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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"""apply working directory changes to changesets (EXPERIMENTAL)
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The absorb extension provides a command to use annotate information to
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amend modified chunks into the corresponding non-public changesets.
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::
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[absorb]
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# only check 50 recent non-public changesets at most
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maxstacksize = 50
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# whether to add noise to new commits to avoid obsolescence cycle
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addnoise = 1
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# make `amend --correlated` a shortcut to the main command
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amendflag = correlated
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[color]
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absorb.node = blue bold
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absorb.path = bold
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"""
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from __future__ import absolute_import
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import collections
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from mercurial.i18n import _
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from mercurial import (
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cmdutil,
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commands,
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context,
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crecord,
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error,
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extensions,
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linelog,
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mdiff,
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node,
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obsolete,
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patch,
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phases,
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pycompat,
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registrar,
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repair,
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scmutil,
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util,
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)
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from mercurial.utils import (
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stringutil,
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)
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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 = 'ships-with-hg-core'
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cmdtable = {}
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command = registrar.command(cmdtable)
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configtable = {}
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configitem = registrar.configitem(configtable)
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configitem('absorb', 'addnoise', default=True)
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configitem('absorb', 'amendflag', default=None)
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configitem('absorb', 'maxstacksize', default=50)
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colortable = {
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'absorb.node': 'blue bold',
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'absorb.path': 'bold',
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}
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defaultdict = collections.defaultdict
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class nullui(object):
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"""blank ui object doing nothing"""
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debugflag = False
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verbose = False
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quiet = True
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def __getitem__(name):
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def nullfunc(*args, **kwds):
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return
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return nullfunc
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class emptyfilecontext(object):
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"""minimal filecontext representing an empty file"""
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def data(self):
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return ''
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def node(self):
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return node.nullid
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def uniq(lst):
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"""list -> list. remove duplicated items without changing the order"""
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seen = set()
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result = []
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for x in lst:
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if x not in seen:
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seen.add(x)
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result.append(x)
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return result
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def getdraftstack(headctx, limit=None):
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"""(ctx, int?) -> [ctx]. get a linear stack of non-public changesets.
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changesets are sorted in topo order, oldest first.
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return at most limit items, if limit is a positive number.
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merges are considered as non-draft as well. i.e. every commit
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returned has and only has 1 parent.
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"""
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ctx = headctx
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result = []
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while ctx.phase() != phases.public:
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if limit and len(result) >= limit:
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break
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parents = ctx.parents()
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if len(parents) != 1:
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break
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result.append(ctx)
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ctx = parents[0]
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result.reverse()
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return result
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def getfilestack(stack, path, seenfctxs=None):
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"""([ctx], str, set) -> [fctx], {ctx: fctx}
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stack is a list of contexts, from old to new. usually they are what
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"getdraftstack" returns.
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follows renames, but not copies.
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seenfctxs is a set of filecontexts that will be considered "immutable".
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they are usually what this function returned in earlier calls, useful
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to avoid issues that a file was "moved" to multiple places and was then
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modified differently, like: "a" was copied to "b", "a" was also copied to
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"c" and then "a" was deleted, then both "b" and "c" were "moved" from "a"
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and we enforce only one of them to be able to affect "a"'s content.
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return an empty list and an empty dict, if the specified path does not
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exist in stack[-1] (the top of the stack).
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otherwise, return a list of de-duplicated filecontexts, and the map to
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convert ctx in the stack to fctx, for possible mutable fctxs. the first item
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of the list would be outside the stack and should be considered immutable.
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the remaining items are within the stack.
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for example, given the following changelog and corresponding filelog
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revisions:
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changelog: 3----4----5----6----7
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filelog: x 0----1----1----2 (x: no such file yet)
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- if stack = [5, 6, 7], returns ([0, 1, 2], {5: 1, 6: 1, 7: 2})
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- if stack = [3, 4, 5], returns ([e, 0, 1], {4: 0, 5: 1}), where "e" is a
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dummy empty filecontext.
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- if stack = [2], returns ([], {})
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- if stack = [7], returns ([1, 2], {7: 2})
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- if stack = [6, 7], returns ([1, 2], {6: 1, 7: 2}), although {6: 1} can be
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removed, since 1 is immutable.
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"""
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if seenfctxs is None:
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seenfctxs = set()
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assert stack
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if path not in stack[-1]:
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return [], {}
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fctxs = []
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fctxmap = {}
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pctx = stack[0].p1() # the public (immutable) ctx we stop at
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for ctx in reversed(stack):
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if path not in ctx: # the file is added in the next commit
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pctx = ctx
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break
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fctx = ctx[path]
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fctxs.append(fctx)
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if fctx in seenfctxs: # treat fctx as the immutable one
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pctx = None # do not add another immutable fctx
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break
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fctxmap[ctx] = fctx # only for mutable fctxs
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renamed = fctx.renamed()
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if renamed:
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path = renamed[0] # follow rename
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if path in ctx: # but do not follow copy
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pctx = ctx.p1()
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break
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if pctx is not None: # need an extra immutable fctx
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if path in pctx:
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fctxs.append(pctx[path])
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else:
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fctxs.append(emptyfilecontext())
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fctxs.reverse()
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# note: we rely on a property of hg: filerev is not reused for linear
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# history. i.e. it's impossible to have:
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# changelog: 4----5----6 (linear, no merges)
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# filelog: 1----2----1
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# ^ reuse filerev (impossible)
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# because parents are part of the hash. if that's not true, we need to
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# remove uniq and find a different way to identify fctxs.
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return uniq(fctxs), fctxmap
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class overlaystore(patch.filestore):
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"""read-only, hybrid store based on a dict and ctx.
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memworkingcopy: {path: content}, overrides file contents.
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"""
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def __init__(self, basectx, memworkingcopy):
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self.basectx = basectx
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self.memworkingcopy = memworkingcopy
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def getfile(self, path):
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"""comply with mercurial.patch.filestore.getfile"""
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if path not in self.basectx:
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return None, None, None
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fctx = self.basectx[path]
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if path in self.memworkingcopy:
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content = self.memworkingcopy[path]
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else:
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content = fctx.data()
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mode = (fctx.islink(), fctx.isexec())
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renamed = fctx.renamed() # False or (path, node)
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return content, mode, (renamed and renamed[0])
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def overlaycontext(memworkingcopy, ctx, parents=None, extra=None):
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"""({path: content}, ctx, (p1node, p2node)?, {}?) -> memctx
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memworkingcopy overrides file contents.
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"""
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# parents must contain 2 items: (node1, node2)
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if parents is None:
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parents = ctx.repo().changelog.parents(ctx.node())
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if extra is None:
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extra = ctx.extra()
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date = ctx.date()
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desc = ctx.description()
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user = ctx.user()
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files = set(ctx.files()).union(memworkingcopy.iterkeys())
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store = overlaystore(ctx, memworkingcopy)
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return context.memctx(
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repo=ctx.repo(), parents=parents, text=desc,
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files=files, filectxfn=store, user=user, date=date,
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branch=None, extra=extra)
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class filefixupstate(object):
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"""state needed to apply fixups to a single file
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internally, it keeps file contents of several revisions and a linelog.
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the linelog uses odd revision numbers for original contents (fctxs passed
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to __init__), and even revision numbers for fixups, like:
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linelog rev 1: self.fctxs[0] (from an immutable "public" changeset)
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linelog rev 2: fixups made to self.fctxs[0]
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linelog rev 3: self.fctxs[1] (a child of fctxs[0])
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linelog rev 4: fixups made to self.fctxs[1]
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...
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a typical use is like:
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1. call diffwith, to calculate self.fixups
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2. (optionally), present self.fixups to the user, or change it
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3. call apply, to apply changes
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4. read results from "finalcontents", or call getfinalcontent
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"""
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def __init__(self, fctxs, ui=None, opts=None):
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"""([fctx], ui or None) -> None
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fctxs should be linear, and sorted by topo order - oldest first.
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fctxs[0] will be considered as "immutable" and will not be changed.
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"""
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self.fctxs = fctxs
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self.ui = ui or nullui()
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self.opts = opts or {}
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# following fields are built from fctxs. they exist for perf reason
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self.contents = [f.data() for f in fctxs]
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self.contentlines = map(mdiff.splitnewlines, self.contents)
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self.linelog = self._buildlinelog()
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if self.ui.debugflag:
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assert self._checkoutlinelog() == self.contents
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# following fields will be filled later
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self.chunkstats = [0, 0] # [adopted, total : int]
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self.targetlines = [] # [str]
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self.fixups = [] # [(linelog rev, a1, a2, b1, b2)]
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self.finalcontents = [] # [str]
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def diffwith(self, targetfctx, showchanges=False):
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"""calculate fixups needed by examining the differences between
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self.fctxs[-1] and targetfctx, chunk by chunk.
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targetfctx is the target state we move towards. we may or may not be
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able to get there because not all modified chunks can be amended into
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a non-public fctx unambiguously.
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call this only once, before apply().
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update self.fixups, self.chunkstats, and self.targetlines.
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"""
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a = self.contents[-1]
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alines = self.contentlines[-1]
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b = targetfctx.data()
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blines = mdiff.splitnewlines(b)
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self.targetlines = blines
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self.linelog.annotate(self.linelog.maxrev)
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annotated = self.linelog.annotateresult # [(linelog rev, linenum)]
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assert len(annotated) == len(alines)
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# add a dummy end line to make insertion at the end easier
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if annotated:
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dummyendline = (annotated[-1][0], annotated[-1][1] + 1)
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annotated.append(dummyendline)
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# analyse diff blocks
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for chunk in self._alldiffchunks(a, b, alines, blines):
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newfixups = self._analysediffchunk(chunk, annotated)
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self.chunkstats[0] += bool(newfixups) # 1 or 0
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self.chunkstats[1] += 1
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self.fixups += newfixups
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if showchanges:
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self._showchanges(alines, blines, chunk, newfixups)
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def apply(self):
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"""apply self.fixups. update self.linelog, self.finalcontents.
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call this only once, before getfinalcontent(), after diffwith().
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"""
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# the following is unnecessary, as it's done by "diffwith":
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# self.linelog.annotate(self.linelog.maxrev)
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for rev, a1, a2, b1, b2 in reversed(self.fixups):
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blines = self.targetlines[b1:b2]
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if self.ui.debugflag:
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idx = (max(rev - 1, 0)) // 2
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self.ui.write(_('%s: chunk %d:%d -> %d lines\n')
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% (node.short(self.fctxs[idx].node()),
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a1, a2, len(blines)))
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self.linelog.replacelines(rev, a1, a2, b1, b2)
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if self.opts.get('edit_lines', False):
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self.finalcontents = self._checkoutlinelogwithedits()
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else:
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self.finalcontents = self._checkoutlinelog()
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def getfinalcontent(self, fctx):
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"""(fctx) -> str. get modified file content for a given filecontext"""
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idx = self.fctxs.index(fctx)
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return self.finalcontents[idx]
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def _analysediffchunk(self, chunk, annotated):
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"""analyse a different chunk and return new fixups found
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return [] if no lines from the chunk can be safely applied.
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the chunk (or lines) cannot be safely applied, if, for example:
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- the modified (deleted) lines belong to a public changeset
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(self.fctxs[0])
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- the chunk is a pure insertion and the adjacent lines (at most 2
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lines) belong to different non-public changesets, or do not belong
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to any non-public changesets.
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- the chunk is modifying lines from different changesets.
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in this case, if the number of lines deleted equals to the number
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of lines added, assume it's a simple 1:1 map (could be wrong).
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otherwise, give up.
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- the chunk is modifying lines from a single non-public changeset,
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but other revisions touch the area as well. i.e. the lines are
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not continuous as seen from the linelog.
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"""
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a1, a2, b1, b2 = chunk
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# find involved indexes from annotate result
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involved = annotated[a1:a2]
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if not involved and annotated: # a1 == a2 and a is not empty
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# pure insertion, check nearby lines. ignore lines belong
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# to the public (first) changeset (i.e. annotated[i][0] == 1)
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nearbylinenums = {a2, max(0, a1 - 1)}
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involved = [annotated[i]
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for i in nearbylinenums if annotated[i][0] != 1]
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involvedrevs = list(set(r for r, l in involved))
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newfixups = []
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if len(involvedrevs) == 1 and self._iscontinuous(a1, a2 - 1, True):
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# chunk belongs to a single revision
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rev = involvedrevs[0]
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if rev > 1:
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fixuprev = rev + 1
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newfixups.append((fixuprev, a1, a2, b1, b2))
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elif a2 - a1 == b2 - b1 or b1 == b2:
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# 1:1 line mapping, or chunk was deleted
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for i in pycompat.xrange(a1, a2):
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rev, linenum = annotated[i]
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if rev > 1:
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if b1 == b2: # deletion, simply remove that single line
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nb1 = nb2 = 0
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else: # 1:1 line mapping, change the corresponding rev
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nb1 = b1 + i - a1
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nb2 = nb1 + 1
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fixuprev = rev + 1
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newfixups.append((fixuprev, i, i + 1, nb1, nb2))
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return self._optimizefixups(newfixups)
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@staticmethod
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def _alldiffchunks(a, b, alines, blines):
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"""like mdiff.allblocks, but only care about differences"""
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blocks = mdiff.allblocks(a, b, lines1=alines, lines2=blines)
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for chunk, btype in blocks:
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if btype != '!':
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continue
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yield chunk
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def _buildlinelog(self):
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"""calculate the initial linelog based on self.content{,line}s.
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this is similar to running a partial "annotate".
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"""
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llog = linelog.linelog()
|
|
|
a, alines = '', []
|
|
|
for i in pycompat.xrange(len(self.contents)):
|
|
|
b, blines = self.contents[i], self.contentlines[i]
|
|
|
llrev = i * 2 + 1
|
|
|
chunks = self._alldiffchunks(a, b, alines, blines)
|
|
|
for a1, a2, b1, b2 in reversed(list(chunks)):
|
|
|
llog.replacelines(llrev, a1, a2, b1, b2)
|
|
|
a, alines = b, blines
|
|
|
return llog
|
|
|
|
|
|
def _checkoutlinelog(self):
|
|
|
"""() -> [str]. check out file contents from linelog"""
|
|
|
contents = []
|
|
|
for i in pycompat.xrange(len(self.contents)):
|
|
|
rev = (i + 1) * 2
|
|
|
self.linelog.annotate(rev)
|
|
|
content = ''.join(map(self._getline, self.linelog.annotateresult))
|
|
|
contents.append(content)
|
|
|
return contents
|
|
|
|
|
|
def _checkoutlinelogwithedits(self):
|
|
|
"""() -> [str]. prompt all lines for edit"""
|
|
|
alllines = self.linelog.getalllines()
|
|
|
# header
|
|
|
editortext = (_('HG: editing %s\nHG: "y" means the line to the right '
|
|
|
'exists in the changeset to the top\nHG:\n')
|
|
|
% self.fctxs[-1].path())
|
|
|
# [(idx, fctx)]. hide the dummy emptyfilecontext
|
|
|
visiblefctxs = [(i, f)
|
|
|
for i, f in enumerate(self.fctxs)
|
|
|
if not isinstance(f, emptyfilecontext)]
|
|
|
for i, (j, f) in enumerate(visiblefctxs):
|
|
|
editortext += (_('HG: %s/%s %s %s\n') %
|
|
|
('|' * i, '-' * (len(visiblefctxs) - i + 1),
|
|
|
node.short(f.node()),
|
|
|
f.description().split('\n',1)[0]))
|
|
|
editortext += _('HG: %s\n') % ('|' * len(visiblefctxs))
|
|
|
# figure out the lifetime of a line, this is relatively inefficient,
|
|
|
# but probably fine
|
|
|
lineset = defaultdict(lambda: set()) # {(llrev, linenum): {llrev}}
|
|
|
for i, f in visiblefctxs:
|
|
|
self.linelog.annotate((i + 1) * 2)
|
|
|
for l in self.linelog.annotateresult:
|
|
|
lineset[l].add(i)
|
|
|
# append lines
|
|
|
for l in alllines:
|
|
|
editortext += (' %s : %s' %
|
|
|
(''.join([('y' if i in lineset[l] else ' ')
|
|
|
for i, _f in visiblefctxs]),
|
|
|
self._getline(l)))
|
|
|
# run editor
|
|
|
editedtext = self.ui.edit(editortext, '', action='absorb')
|
|
|
if not editedtext:
|
|
|
raise error.Abort(_('empty editor text'))
|
|
|
# parse edited result
|
|
|
contents = ['' for i in self.fctxs]
|
|
|
leftpadpos = 4
|
|
|
colonpos = leftpadpos + len(visiblefctxs) + 1
|
|
|
for l in mdiff.splitnewlines(editedtext):
|
|
|
if l.startswith('HG:'):
|
|
|
continue
|
|
|
if l[colonpos - 1:colonpos + 2] != ' : ':
|
|
|
raise error.Abort(_('malformed line: %s') % l)
|
|
|
linecontent = l[colonpos + 2:]
|
|
|
for i, ch in enumerate(l[leftpadpos:colonpos - 1]):
|
|
|
if ch == 'y':
|
|
|
contents[visiblefctxs[i][0]] += linecontent
|
|
|
# chunkstats is hard to calculate if anything changes, therefore
|
|
|
# set them to just a simple value (1, 1).
|
|
|
if editedtext != editortext:
|
|
|
self.chunkstats = [1, 1]
|
|
|
return contents
|
|
|
|
|
|
def _getline(self, lineinfo):
|
|
|
"""((rev, linenum)) -> str. convert rev+line number to line content"""
|
|
|
rev, linenum = lineinfo
|
|
|
if rev & 1: # odd: original line taken from fctxs
|
|
|
return self.contentlines[rev // 2][linenum]
|
|
|
else: # even: fixup line from targetfctx
|
|
|
return self.targetlines[linenum]
|
|
|
|
|
|
def _iscontinuous(self, a1, a2, closedinterval=False):
|
|
|
"""(a1, a2 : int) -> bool
|
|
|
|
|
|
check if these lines are continuous. i.e. no other insertions or
|
|
|
deletions (from other revisions) among these lines.
|
|
|
|
|
|
closedinterval decides whether a2 should be included or not. i.e. is
|
|
|
it [a1, a2), or [a1, a2] ?
|
|
|
"""
|
|
|
if a1 >= a2:
|
|
|
return True
|
|
|
llog = self.linelog
|
|
|
offset1 = llog.getoffset(a1)
|
|
|
offset2 = llog.getoffset(a2) + int(closedinterval)
|
|
|
linesinbetween = llog.getalllines(offset1, offset2)
|
|
|
return len(linesinbetween) == a2 - a1 + int(closedinterval)
|
|
|
|
|
|
def _optimizefixups(self, fixups):
|
|
|
"""[(rev, a1, a2, b1, b2)] -> [(rev, a1, a2, b1, b2)].
|
|
|
merge adjacent fixups to make them less fragmented.
|
|
|
"""
|
|
|
result = []
|
|
|
pcurrentchunk = [[-1, -1, -1, -1, -1]]
|
|
|
|
|
|
def pushchunk():
|
|
|
if pcurrentchunk[0][0] != -1:
|
|
|
result.append(tuple(pcurrentchunk[0]))
|
|
|
|
|
|
for i, chunk in enumerate(fixups):
|
|
|
rev, a1, a2, b1, b2 = chunk
|
|
|
lastrev = pcurrentchunk[0][0]
|
|
|
lasta2 = pcurrentchunk[0][2]
|
|
|
lastb2 = pcurrentchunk[0][4]
|
|
|
if (a1 == lasta2 and b1 == lastb2 and rev == lastrev and
|
|
|
self._iscontinuous(max(a1 - 1, 0), a1)):
|
|
|
# merge into currentchunk
|
|
|
pcurrentchunk[0][2] = a2
|
|
|
pcurrentchunk[0][4] = b2
|
|
|
else:
|
|
|
pushchunk()
|
|
|
pcurrentchunk[0] = list(chunk)
|
|
|
pushchunk()
|
|
|
return result
|
|
|
|
|
|
def _showchanges(self, alines, blines, chunk, fixups):
|
|
|
ui = self.ui
|
|
|
|
|
|
def label(line, label):
|
|
|
if line.endswith('\n'):
|
|
|
line = line[:-1]
|
|
|
return ui.label(line, label)
|
|
|
|
|
|
# this is not optimized for perf but _showchanges only gets executed
|
|
|
# with an extra command-line flag.
|
|
|
a1, a2, b1, b2 = chunk
|
|
|
aidxs, bidxs = [0] * (a2 - a1), [0] * (b2 - b1)
|
|
|
for idx, fa1, fa2, fb1, fb2 in fixups:
|
|
|
for i in pycompat.xrange(fa1, fa2):
|
|
|
aidxs[i - a1] = (max(idx, 1) - 1) // 2
|
|
|
for i in pycompat.xrange(fb1, fb2):
|
|
|
bidxs[i - b1] = (max(idx, 1) - 1) // 2
|
|
|
|
|
|
buf = [] # [(idx, content)]
|
|
|
buf.append((0, label('@@ -%d,%d +%d,%d @@'
|
|
|
% (a1, a2 - a1, b1, b2 - b1), 'diff.hunk')))
|
|
|
buf += [(aidxs[i - a1], label('-' + alines[i], 'diff.deleted'))
|
|
|
for i in pycompat.xrange(a1, a2)]
|
|
|
buf += [(bidxs[i - b1], label('+' + blines[i], 'diff.inserted'))
|
|
|
for i in pycompat.xrange(b1, b2)]
|
|
|
for idx, line in buf:
|
|
|
shortnode = idx and node.short(self.fctxs[idx].node()) or ''
|
|
|
ui.write(ui.label(shortnode[0:7].ljust(8), 'absorb.node') +
|
|
|
line + '\n')
|
|
|
|
|
|
class fixupstate(object):
|
|
|
"""state needed to run absorb
|
|
|
|
|
|
internally, it keeps paths and filefixupstates.
|
|
|
|
|
|
a typical use is like filefixupstates:
|
|
|
|
|
|
1. call diffwith, to calculate fixups
|
|
|
2. (optionally), present fixups to the user, or edit fixups
|
|
|
3. call apply, to apply changes to memory
|
|
|
4. call commit, to commit changes to hg database
|
|
|
"""
|
|
|
|
|
|
def __init__(self, stack, ui=None, opts=None):
|
|
|
"""([ctx], ui or None) -> None
|
|
|
|
|
|
stack: should be linear, and sorted by topo order - oldest first.
|
|
|
all commits in stack are considered mutable.
|
|
|
"""
|
|
|
assert stack
|
|
|
self.ui = ui or nullui()
|
|
|
self.opts = opts or {}
|
|
|
self.stack = stack
|
|
|
self.repo = stack[-1].repo().unfiltered()
|
|
|
|
|
|
# following fields will be filled later
|
|
|
self.paths = [] # [str]
|
|
|
self.status = None # ctx.status output
|
|
|
self.fctxmap = {} # {path: {ctx: fctx}}
|
|
|
self.fixupmap = {} # {path: filefixupstate}
|
|
|
self.replacemap = {} # {oldnode: newnode or None}
|
|
|
self.finalnode = None # head after all fixups
|
|
|
|
|
|
def diffwith(self, targetctx, match=None, showchanges=False):
|
|
|
"""diff and prepare fixups. update self.fixupmap, self.paths"""
|
|
|
# only care about modified files
|
|
|
self.status = self.stack[-1].status(targetctx, match)
|
|
|
self.paths = []
|
|
|
# but if --edit-lines is used, the user may want to edit files
|
|
|
# even if they are not modified
|
|
|
editopt = self.opts.get('edit_lines')
|
|
|
if not self.status.modified and editopt and match:
|
|
|
interestingpaths = match.files()
|
|
|
else:
|
|
|
interestingpaths = self.status.modified
|
|
|
# prepare the filefixupstate
|
|
|
seenfctxs = set()
|
|
|
# sorting is necessary to eliminate ambiguity for the "double move"
|
|
|
# case: "hg cp A B; hg cp A C; hg rm A", then only "B" can affect "A".
|
|
|
for path in sorted(interestingpaths):
|
|
|
if self.ui.debugflag:
|
|
|
self.ui.write(_('calculating fixups for %s\n') % path)
|
|
|
targetfctx = targetctx[path]
|
|
|
fctxs, ctx2fctx = getfilestack(self.stack, path, seenfctxs)
|
|
|
# ignore symbolic links or binary, or unchanged files
|
|
|
if any(f.islink() or stringutil.binary(f.data())
|
|
|
for f in [targetfctx] + fctxs
|
|
|
if not isinstance(f, emptyfilecontext)):
|
|
|
continue
|
|
|
if targetfctx.data() == fctxs[-1].data() and not editopt:
|
|
|
continue
|
|
|
seenfctxs.update(fctxs[1:])
|
|
|
self.fctxmap[path] = ctx2fctx
|
|
|
fstate = filefixupstate(fctxs, ui=self.ui, opts=self.opts)
|
|
|
if showchanges:
|
|
|
colorpath = self.ui.label(path, 'absorb.path')
|
|
|
header = 'showing changes for ' + colorpath
|
|
|
self.ui.write(header + '\n')
|
|
|
fstate.diffwith(targetfctx, showchanges=showchanges)
|
|
|
self.fixupmap[path] = fstate
|
|
|
self.paths.append(path)
|
|
|
|
|
|
def apply(self):
|
|
|
"""apply fixups to individual filefixupstates"""
|
|
|
for path, state in self.fixupmap.iteritems():
|
|
|
if self.ui.debugflag:
|
|
|
self.ui.write(_('applying fixups to %s\n') % path)
|
|
|
state.apply()
|
|
|
|
|
|
@property
|
|
|
def chunkstats(self):
|
|
|
"""-> {path: chunkstats}. collect chunkstats from filefixupstates"""
|
|
|
return dict((path, state.chunkstats)
|
|
|
for path, state in self.fixupmap.iteritems())
|
|
|
|
|
|
def commit(self):
|
|
|
"""commit changes. update self.finalnode, self.replacemap"""
|
|
|
with self.repo.wlock(), self.repo.lock():
|
|
|
with self.repo.transaction('absorb') as tr:
|
|
|
self._commitstack()
|
|
|
self._movebookmarks(tr)
|
|
|
if self.repo['.'].node() in self.replacemap:
|
|
|
self._moveworkingdirectoryparent()
|
|
|
if self._useobsolete:
|
|
|
self._obsoleteoldcommits()
|
|
|
if not self._useobsolete: # strip must be outside transactions
|
|
|
self._stripoldcommits()
|
|
|
return self.finalnode
|
|
|
|
|
|
def printchunkstats(self):
|
|
|
"""print things like '1 of 2 chunk(s) applied'"""
|
|
|
ui = self.ui
|
|
|
chunkstats = self.chunkstats
|
|
|
if ui.verbose:
|
|
|
# chunkstats for each file
|
|
|
for path, stat in chunkstats.iteritems():
|
|
|
if stat[0]:
|
|
|
ui.write(_('%s: %d of %d chunk(s) applied\n')
|
|
|
% (path, stat[0], stat[1]))
|
|
|
elif not ui.quiet:
|
|
|
# a summary for all files
|
|
|
stats = chunkstats.values()
|
|
|
applied, total = (sum(s[i] for s in stats) for i in (0, 1))
|
|
|
ui.write(_('%d of %d chunk(s) applied\n') % (applied, total))
|
|
|
|
|
|
def _commitstack(self):
|
|
|
"""make new commits. update self.finalnode, self.replacemap.
|
|
|
it is splitted from "commit" to avoid too much indentation.
|
|
|
"""
|
|
|
# last node (20-char) committed by us
|
|
|
lastcommitted = None
|
|
|
# p1 which overrides the parent of the next commit, "None" means use
|
|
|
# the original parent unchanged
|
|
|
nextp1 = None
|
|
|
for ctx in self.stack:
|
|
|
memworkingcopy = self._getnewfilecontents(ctx)
|
|
|
if not memworkingcopy and not lastcommitted:
|
|
|
# nothing changed, nothing commited
|
|
|
nextp1 = ctx
|
|
|
continue
|
|
|
msg = ''
|
|
|
if self._willbecomenoop(memworkingcopy, ctx, nextp1):
|
|
|
# changeset is no longer necessary
|
|
|
self.replacemap[ctx.node()] = None
|
|
|
msg = _('became empty and was dropped')
|
|
|
else:
|
|
|
# changeset needs re-commit
|
|
|
nodestr = self._commitsingle(memworkingcopy, ctx, p1=nextp1)
|
|
|
lastcommitted = self.repo[nodestr]
|
|
|
nextp1 = lastcommitted
|
|
|
self.replacemap[ctx.node()] = lastcommitted.node()
|
|
|
if memworkingcopy:
|
|
|
msg = _('%d file(s) changed, became %s') % (
|
|
|
len(memworkingcopy), self._ctx2str(lastcommitted))
|
|
|
else:
|
|
|
msg = _('became %s') % self._ctx2str(lastcommitted)
|
|
|
if self.ui.verbose and msg:
|
|
|
self.ui.write(_('%s: %s\n') % (self._ctx2str(ctx), msg))
|
|
|
self.finalnode = lastcommitted and lastcommitted.node()
|
|
|
|
|
|
def _ctx2str(self, ctx):
|
|
|
if self.ui.debugflag:
|
|
|
return ctx.hex()
|
|
|
else:
|
|
|
return node.short(ctx.node())
|
|
|
|
|
|
def _getnewfilecontents(self, ctx):
|
|
|
"""(ctx) -> {path: str}
|
|
|
|
|
|
fetch file contents from filefixupstates.
|
|
|
return the working copy overrides - files different from ctx.
|
|
|
"""
|
|
|
result = {}
|
|
|
for path in self.paths:
|
|
|
ctx2fctx = self.fctxmap[path] # {ctx: fctx}
|
|
|
if ctx not in ctx2fctx:
|
|
|
continue
|
|
|
fctx = ctx2fctx[ctx]
|
|
|
content = fctx.data()
|
|
|
newcontent = self.fixupmap[path].getfinalcontent(fctx)
|
|
|
if content != newcontent:
|
|
|
result[fctx.path()] = newcontent
|
|
|
return result
|
|
|
|
|
|
def _movebookmarks(self, tr):
|
|
|
repo = self.repo
|
|
|
needupdate = [(name, self.replacemap[hsh])
|
|
|
for name, hsh in repo._bookmarks.iteritems()
|
|
|
if hsh in self.replacemap]
|
|
|
changes = []
|
|
|
for name, hsh in needupdate:
|
|
|
if hsh:
|
|
|
changes.append((name, hsh))
|
|
|
if self.ui.verbose:
|
|
|
self.ui.write(_('moving bookmark %s to %s\n')
|
|
|
% (name, node.hex(hsh)))
|
|
|
else:
|
|
|
changes.append((name, None))
|
|
|
if self.ui.verbose:
|
|
|
self.ui.write(_('deleting bookmark %s\n') % name)
|
|
|
repo._bookmarks.applychanges(repo, tr, changes)
|
|
|
|
|
|
def _moveworkingdirectoryparent(self):
|
|
|
if not self.finalnode:
|
|
|
# Find the latest not-{obsoleted,stripped} parent.
|
|
|
revs = self.repo.revs('max(::. - %ln)', self.replacemap.keys())
|
|
|
ctx = self.repo[revs.first()]
|
|
|
self.finalnode = ctx.node()
|
|
|
else:
|
|
|
ctx = self.repo[self.finalnode]
|
|
|
|
|
|
dirstate = self.repo.dirstate
|
|
|
# dirstate.rebuild invalidates fsmonitorstate, causing "hg status" to
|
|
|
# be slow. in absorb's case, no need to invalidate fsmonitorstate.
|
|
|
noop = lambda: 0
|
|
|
restore = noop
|
|
|
if util.safehasattr(dirstate, '_fsmonitorstate'):
|
|
|
bak = dirstate._fsmonitorstate.invalidate
|
|
|
def restore():
|
|
|
dirstate._fsmonitorstate.invalidate = bak
|
|
|
dirstate._fsmonitorstate.invalidate = noop
|
|
|
try:
|
|
|
with dirstate.parentchange():
|
|
|
dirstate.rebuild(ctx.node(), ctx.manifest(), self.paths)
|
|
|
finally:
|
|
|
restore()
|
|
|
|
|
|
@staticmethod
|
|
|
def _willbecomenoop(memworkingcopy, ctx, pctx=None):
|
|
|
"""({path: content}, ctx, ctx) -> bool. test if a commit will be noop
|
|
|
|
|
|
if it will become an empty commit (does not change anything, after the
|
|
|
memworkingcopy overrides), return True. otherwise return False.
|
|
|
"""
|
|
|
if not pctx:
|
|
|
parents = ctx.parents()
|
|
|
if len(parents) != 1:
|
|
|
return False
|
|
|
pctx = parents[0]
|
|
|
# ctx changes more files (not a subset of memworkingcopy)
|
|
|
if not set(ctx.files()).issubset(set(memworkingcopy.iterkeys())):
|
|
|
return False
|
|
|
for path, content in memworkingcopy.iteritems():
|
|
|
if path not in pctx or path not in ctx:
|
|
|
return False
|
|
|
fctx = ctx[path]
|
|
|
pfctx = pctx[path]
|
|
|
if pfctx.flags() != fctx.flags():
|
|
|
return False
|
|
|
if pfctx.data() != content:
|
|
|
return False
|
|
|
return True
|
|
|
|
|
|
def _commitsingle(self, memworkingcopy, ctx, p1=None):
|
|
|
"""(ctx, {path: content}, node) -> node. make a single commit
|
|
|
|
|
|
the commit is a clone from ctx, with a (optionally) different p1, and
|
|
|
different file contents replaced by memworkingcopy.
|
|
|
"""
|
|
|
parents = p1 and (p1, node.nullid)
|
|
|
extra = ctx.extra()
|
|
|
if self._useobsolete and self.ui.configbool('absorb', 'addnoise'):
|
|
|
extra['absorb_source'] = ctx.hex()
|
|
|
mctx = overlaycontext(memworkingcopy, ctx, parents, extra=extra)
|
|
|
# preserve phase
|
|
|
with mctx.repo().ui.configoverride({
|
|
|
('phases', 'new-commit'): ctx.phase()}):
|
|
|
return mctx.commit()
|
|
|
|
|
|
@util.propertycache
|
|
|
def _useobsolete(self):
|
|
|
"""() -> bool"""
|
|
|
return obsolete.isenabled(self.repo, obsolete.createmarkersopt)
|
|
|
|
|
|
def _obsoleteoldcommits(self):
|
|
|
relations = [(self.repo[k], v and (self.repo[v],) or ())
|
|
|
for k, v in self.replacemap.iteritems()]
|
|
|
if relations:
|
|
|
obsolete.createmarkers(self.repo, relations)
|
|
|
|
|
|
def _stripoldcommits(self):
|
|
|
nodelist = self.replacemap.keys()
|
|
|
# make sure we don't strip innocent children
|
|
|
revs = self.repo.revs('%ln - (::(heads(%ln::)-%ln))', nodelist,
|
|
|
nodelist, nodelist)
|
|
|
tonode = self.repo.changelog.node
|
|
|
nodelist = [tonode(r) for r in revs]
|
|
|
if nodelist:
|
|
|
repair.strip(self.repo.ui, self.repo, nodelist)
|
|
|
|
|
|
def _parsechunk(hunk):
|
|
|
"""(crecord.uihunk or patch.recordhunk) -> (path, (a1, a2, [bline]))"""
|
|
|
if type(hunk) not in (crecord.uihunk, patch.recordhunk):
|
|
|
return None, None
|
|
|
path = hunk.header.filename()
|
|
|
a1 = hunk.fromline + len(hunk.before) - 1
|
|
|
# remove before and after context
|
|
|
hunk.before = hunk.after = []
|
|
|
buf = util.stringio()
|
|
|
hunk.write(buf)
|
|
|
patchlines = mdiff.splitnewlines(buf.getvalue())
|
|
|
# hunk.prettystr() will update hunk.removed
|
|
|
a2 = a1 + hunk.removed
|
|
|
blines = [l[1:] for l in patchlines[1:] if l[0] != '-']
|
|
|
return path, (a1, a2, blines)
|
|
|
|
|
|
def overlaydiffcontext(ctx, chunks):
|
|
|
"""(ctx, [crecord.uihunk]) -> memctx
|
|
|
|
|
|
return a memctx with some [1] patches (chunks) applied to ctx.
|
|
|
[1]: modifications are handled. renames, mode changes, etc. are ignored.
|
|
|
"""
|
|
|
# sadly the applying-patch logic is hardly reusable, and messy:
|
|
|
# 1. the core logic "_applydiff" is too heavy - it writes .rej files, it
|
|
|
# needs a file stream of a patch and will re-parse it, while we have
|
|
|
# structured hunk objects at hand.
|
|
|
# 2. a lot of different implementations about "chunk" (patch.hunk,
|
|
|
# patch.recordhunk, crecord.uihunk)
|
|
|
# as we only care about applying changes to modified files, no mode
|
|
|
# change, no binary diff, and no renames, it's probably okay to
|
|
|
# re-invent the logic using much simpler code here.
|
|
|
memworkingcopy = {} # {path: content}
|
|
|
patchmap = defaultdict(lambda: []) # {path: [(a1, a2, [bline])]}
|
|
|
for path, info in map(_parsechunk, chunks):
|
|
|
if not path or not info:
|
|
|
continue
|
|
|
patchmap[path].append(info)
|
|
|
for path, patches in patchmap.iteritems():
|
|
|
if path not in ctx or not patches:
|
|
|
continue
|
|
|
patches.sort(reverse=True)
|
|
|
lines = mdiff.splitnewlines(ctx[path].data())
|
|
|
for a1, a2, blines in patches:
|
|
|
lines[a1:a2] = blines
|
|
|
memworkingcopy[path] = ''.join(lines)
|
|
|
return overlaycontext(memworkingcopy, ctx)
|
|
|
|
|
|
def absorb(ui, repo, stack=None, targetctx=None, pats=None, opts=None):
|
|
|
"""pick fixup chunks from targetctx, apply them to stack.
|
|
|
|
|
|
if targetctx is None, the working copy context will be used.
|
|
|
if stack is None, the current draft stack will be used.
|
|
|
return fixupstate.
|
|
|
"""
|
|
|
if stack is None:
|
|
|
limit = ui.configint('absorb', 'maxstacksize')
|
|
|
stack = getdraftstack(repo['.'], limit)
|
|
|
if limit and len(stack) >= limit:
|
|
|
ui.warn(_('absorb: only the recent %d changesets will '
|
|
|
'be analysed\n')
|
|
|
% limit)
|
|
|
if not stack:
|
|
|
raise error.Abort(_('no changeset to change'))
|
|
|
if targetctx is None: # default to working copy
|
|
|
targetctx = repo[None]
|
|
|
if pats is None:
|
|
|
pats = ()
|
|
|
if opts is None:
|
|
|
opts = {}
|
|
|
state = fixupstate(stack, ui=ui, opts=opts)
|
|
|
matcher = scmutil.match(targetctx, pats, opts)
|
|
|
if opts.get('interactive'):
|
|
|
diff = patch.diff(repo, stack[-1].node(), targetctx.node(), matcher)
|
|
|
origchunks = patch.parsepatch(diff)
|
|
|
chunks = cmdutil.recordfilter(ui, origchunks)[0]
|
|
|
targetctx = overlaydiffcontext(stack[-1], chunks)
|
|
|
state.diffwith(targetctx, matcher, showchanges=opts.get('print_changes'))
|
|
|
if not opts.get('dry_run'):
|
|
|
state.apply()
|
|
|
if state.commit():
|
|
|
state.printchunkstats()
|
|
|
elif not ui.quiet:
|
|
|
ui.write(_('nothing applied\n'))
|
|
|
return state
|
|
|
|
|
|
@command('^absorb|sf',
|
|
|
[('p', 'print-changes', None,
|
|
|
_('print which changesets are modified by which changes')),
|
|
|
('i', 'interactive', None,
|
|
|
_('interactively select which chunks to apply (EXPERIMENTAL)')),
|
|
|
('e', 'edit-lines', None,
|
|
|
_('edit what lines belong to which changesets before commit '
|
|
|
'(EXPERIMENTAL)')),
|
|
|
] + commands.dryrunopts + commands.walkopts,
|
|
|
_('hg absorb [OPTION] [FILE]...'))
|
|
|
def absorbcmd(ui, repo, *pats, **opts):
|
|
|
"""incorporate corrections into the stack of draft changesets
|
|
|
|
|
|
absorb analyzes each change in your working directory and attempts to
|
|
|
amend the changed lines into the changesets in your stack that first
|
|
|
introduced those lines.
|
|
|
|
|
|
If absorb cannot find an unambiguous changeset to amend for a change,
|
|
|
that change will be left in the working directory, untouched. They can be
|
|
|
observed by :hg:`status` or :hg:`diff` afterwards. In other words,
|
|
|
absorb does not write to the working directory.
|
|
|
|
|
|
Changesets outside the revset `::. and not public() and not merge()` will
|
|
|
not be changed.
|
|
|
|
|
|
Changesets that become empty after applying the changes will be deleted.
|
|
|
|
|
|
If in doubt, run :hg:`absorb -pn` to preview what changesets will
|
|
|
be amended by what changed lines, without actually changing anything.
|
|
|
|
|
|
Returns 0 on success, 1 if all chunks were ignored and nothing amended.
|
|
|
"""
|
|
|
state = absorb(ui, repo, pats=pats, opts=opts)
|
|
|
if sum(s[0] for s in state.chunkstats.values()) == 0:
|
|
|
return 1
|
|
|
|
|
|
def _wrapamend(flag):
|
|
|
"""add flag to amend, which will be a shortcut to the absorb command"""
|
|
|
if not flag:
|
|
|
return
|
|
|
amendcmd = extensions.bind(_amendcmd, flag)
|
|
|
# the amend command can exist in evolve, or fbamend
|
|
|
for extname in ['evolve', 'fbamend', None]:
|
|
|
try:
|
|
|
if extname is None:
|
|
|
cmdtable = commands.table
|
|
|
else:
|
|
|
ext = extensions.find(extname)
|
|
|
cmdtable = ext.cmdtable
|
|
|
except (KeyError, AttributeError):
|
|
|
continue
|
|
|
try:
|
|
|
entry = extensions.wrapcommand(cmdtable, 'amend', amendcmd)
|
|
|
options = entry[1]
|
|
|
msg = _('incorporate corrections into stack. '
|
|
|
'see \'hg help absorb\' for details')
|
|
|
options.append(('', flag, None, msg))
|
|
|
return
|
|
|
except error.UnknownCommand:
|
|
|
pass
|
|
|
|
|
|
def _amendcmd(flag, orig, ui, repo, *pats, **opts):
|
|
|
if not opts.get(flag):
|
|
|
return orig(ui, repo, *pats, **opts)
|
|
|
# use absorb
|
|
|
for k, v in opts.iteritems(): # check unsupported flags
|
|
|
if v and k not in ['interactive', flag]:
|
|
|
raise error.Abort(_('--%s does not support --%s')
|
|
|
% (flag, k.replace('_', '-')))
|
|
|
state = absorb(ui, repo, pats=pats, opts=opts)
|
|
|
# different from the original absorb, tell users what chunks were
|
|
|
# ignored and were left. it's because users usually expect "amend" to
|
|
|
# take all of their changes and will feel strange otherwise.
|
|
|
# the original "absorb" command faces more-advanced users knowing
|
|
|
# what's going on and is less verbose.
|
|
|
adoptedsum = 0
|
|
|
messages = []
|
|
|
for path, (adopted, total) in state.chunkstats.iteritems():
|
|
|
adoptedsum += adopted
|
|
|
if adopted == total:
|
|
|
continue
|
|
|
reason = _('%d modified chunks were ignored') % (total - adopted)
|
|
|
messages.append(('M', 'modified', path, reason))
|
|
|
for idx, word, symbol in [(0, 'modified', 'M'), (1, 'added', 'A'),
|
|
|
(2, 'removed', 'R'), (3, 'deleted', '!')]:
|
|
|
paths = set(state.status[idx]) - set(state.paths)
|
|
|
for path in sorted(paths):
|
|
|
if word == 'modified':
|
|
|
reason = _('unsupported file type (ex. binary or link)')
|
|
|
else:
|
|
|
reason = _('%s files were ignored') % word
|
|
|
messages.append((symbol, word, path, reason))
|
|
|
if messages:
|
|
|
ui.write(_('\n# changes not applied and left in '
|
|
|
'working directory:\n'))
|
|
|
for symbol, word, path, reason in messages:
|
|
|
ui.write(_('# %s %s : %s\n') % (
|
|
|
ui.label(symbol, 'status.' + word),
|
|
|
ui.label(path, 'status.' + word), reason))
|
|
|
|
|
|
if adoptedsum == 0:
|
|
|
return 1
|
|
|
|
|
|
def extsetup(ui):
|
|
|
_wrapamend(ui.config('absorb', 'amendflag'))
|
|
|
|
