Mercurial > hg
view contrib/undumprevlog @ 35998:dce43aaaf209
lfs: allow a pointer to be extracted from a context that removes the file
This is needed to let 'set:lfs()' and '{lfs_files}' work normally on removed
files.
Yuya suggested returning a null pointer for removed files, instead of the
pointer from the parent. The first attempt at this was to return None for a non
LFS file, and a (pointer, ctx) tuple to hold the pointer and context (or parent
pointer and context for a removed file). But this complicated the callers, even
the ones that didn't care about removed files.
Instead, let's use {} to represent a removed pointer. This has the added
convenience of being a useful representation in the template language, and only
affects the callers that care about removed files (and only slightly). Since
pointers are explicitly serialized with a call to a member function, there is no
danger of writing these to disk.
author | Matt Harbison <matt_harbison@yahoo.com> |
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date | Sat, 27 Jan 2018 18:56:24 -0500 |
parents | 5d9890d8ca77 |
children | a8a902d7176e |
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#!/usr/bin/env python # Undump a dump from dumprevlog # $ hg init # $ undumprevlog < repo.dump from __future__ import absolute_import, print_function import sys from mercurial import ( node, revlog, transaction, util, vfs as vfsmod, ) for fp in (sys.stdin, sys.stdout, sys.stderr): util.setbinary(fp) opener = vfsmod.vfs('.', False) tr = transaction.transaction(sys.stderr.write, opener, {'store': opener}, "undump.journal") while True: l = sys.stdin.readline() if not l: break if l.startswith("file:"): f = l[6:-1] r = revlog.revlog(opener, f) print(f) elif l.startswith("node:"): n = node.bin(l[6:-1]) elif l.startswith("linkrev:"): lr = int(l[9:-1]) elif l.startswith("parents:"): p = l[9:-1].split() p1 = node.bin(p[0]) p2 = node.bin(p[1]) elif l.startswith("length:"): length = int(l[8:-1]) sys.stdin.readline() # start marker d = sys.stdin.read(length) sys.stdin.readline() # end marker r.addrevision(d, tr, lr, p1, p2) tr.close()