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# Helper script used for generating history and working copy files and content.
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# The file's name corresponds to its history. The number of changesets can
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# be specified on the command line. With 2 changesets, files with names like
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# content1_content2_content1-untracked are generated. The first two filename
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# segments describe the contents in the two changesets. The third segment
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# ("content1-untracked") describes the state in the working copy, i.e.
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# the file has content "content1" and is untracked (since it was previously
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# tracked, it has been forgotten).
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#
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# This script generates the filenames and their content, but it's up to the
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# caller to tell hg about the state.
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#
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# There are two subcommands:
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# filelist <numchangesets>
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# state <numchangesets> (<changeset>|wc)
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#
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# Typical usage:
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#
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# $ python $TESTDIR/generate-working-copy-states.py state 2 1
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# $ hg addremove --similarity 0
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# $ hg commit -m 'first'
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#
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# $ python $TESTDIR/generate-working-copy-states.py state 2 1
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# $ hg addremove --similarity 0
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# $ hg commit -m 'second'
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#
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# $ python $TESTDIR/generate-working-copy-states.py state 2 wc
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# $ hg addremove --similarity 0
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# $ hg forget *_*_*-untracked
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# $ rm *_*_missing-*
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import sys
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import os
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# Generates pairs of (filename, contents), where 'contents' is a list
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# describing the file's content at each revision (or in the working copy).
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# At each revision, it is either None or the file's actual content. When not
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# None, it may be either new content or the same content as an earlier
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# revisions, so all of (modified,clean,added,removed) can be tested.
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def generatestates(maxchangesets, parentcontents):
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depth = len(parentcontents)
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if depth == maxchangesets + 1:
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for tracked in ('untracked', 'tracked'):
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filename = "_".join([(content is None and 'missing' or content) for
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content in parentcontents]) + "-" + tracked
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yield (filename, parentcontents)
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else:
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for content in (set([None, 'content' + str(depth + 1)]) |
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set(parentcontents)):
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for combination in generatestates(maxchangesets,
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parentcontents + [content]):
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yield combination
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# retrieve the command line arguments
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target = sys.argv[1]
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maxchangesets = int(sys.argv[2])
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if target == 'state':
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depth = sys.argv[3]
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# sort to make sure we have stable output
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combinations = sorted(generatestates(maxchangesets, []))
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# compute file content
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content = []
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for filename, states in combinations:
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if target == 'filelist':
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print filename
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elif target == 'state':
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if depth == 'wc':
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# Make sure there is content so the file gets written and can be
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# tracked. It will be deleted outside of this script.
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content.append((filename, states[maxchangesets] or 'TOBEDELETED'))
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else:
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content.append((filename, states[int(depth) - 1]))
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else:
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print >> sys.stderr, "unknown target:", target
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sys.exit(1)
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# write actual content
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for filename, data in content:
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if data is not None:
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f = open(filename, 'wb')
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f.write(data + '\n')
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f.close()
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elif os.path.exists(filename):
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os.remove(filename)
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