Mercurial > hg
view tests/generate-working-copy-states.py @ 28556:0706d60d070f
cache: remove branch revision file before rewriting the branch name file
New branch names are usually appended to the branch name file. If that fails or
the file has been modified by another process, it is rewritten. That left a
small opportunity that there could be references to non-existent entries in the
file while it was rewritten.
To avoid that, remove the revision branch cache file with the references to the
branch name file before rewriting the branch name file. Worst case, when
interrupted at the wrong time, the cache will be lost and rebuilt next time.
It is unknown if this fixes a real problem that ever happened.
author | Mads Kiilerich <madski@unity3d.com> |
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date | Sun, 13 Mar 2016 02:06:21 +0100 |
parents | a327a24acfea |
children | 3cf1995dbdd5 |
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# Helper script used for generating history and working copy files and content. # The file's name corresponds to its history. The number of changesets can # be specified on the command line. With 2 changesets, files with names like # content1_content2_content1-untracked are generated. The first two filename # segments describe the contents in the two changesets. The third segment # ("content1-untracked") describes the state in the working copy, i.e. # the file has content "content1" and is untracked (since it was previously # tracked, it has been forgotten). # # This script generates the filenames and their content, but it's up to the # caller to tell hg about the state. # # There are two subcommands: # filelist <numchangesets> # state <numchangesets> (<changeset>|wc) # # Typical usage: # # $ python $TESTDIR/generate-working-copy-states.py state 2 1 # $ hg addremove --similarity 0 # $ hg commit -m 'first' # # $ python $TESTDIR/generate-working-copy-states.py state 2 1 # $ hg addremove --similarity 0 # $ hg commit -m 'second' # # $ python $TESTDIR/generate-working-copy-states.py state 2 wc # $ hg addremove --similarity 0 # $ hg forget *_*_*-untracked # $ rm *_*_missing-* from __future__ import absolute_import import os import sys # Generates pairs of (filename, contents), where 'contents' is a list # describing the file's content at each revision (or in the working copy). # At each revision, it is either None or the file's actual content. When not # None, it may be either new content or the same content as an earlier # revisions, so all of (modified,clean,added,removed) can be tested. def generatestates(maxchangesets, parentcontents): depth = len(parentcontents) if depth == maxchangesets + 1: for tracked in ('untracked', 'tracked'): filename = "_".join([(content is None and 'missing' or content) for content in parentcontents]) + "-" + tracked yield (filename, parentcontents) else: for content in (set([None, 'content' + str(depth + 1)]) | set(parentcontents)): for combination in generatestates(maxchangesets, parentcontents + [content]): yield combination # retrieve the command line arguments target = sys.argv[1] maxchangesets = int(sys.argv[2]) if target == 'state': depth = sys.argv[3] # sort to make sure we have stable output combinations = sorted(generatestates(maxchangesets, [])) # compute file content content = [] for filename, states in combinations: if target == 'filelist': print filename elif target == 'state': if depth == 'wc': # Make sure there is content so the file gets written and can be # tracked. It will be deleted outside of this script. content.append((filename, states[maxchangesets] or 'TOBEDELETED')) else: content.append((filename, states[int(depth) - 1])) else: print >> sys.stderr, "unknown target:", target sys.exit(1) # write actual content for filename, data in content: if data is not None: f = open(filename, 'wb') f.write(data + '\n') f.close() elif os.path.exists(filename): os.remove(filename)