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A python hook for "hg fix" that prints out the number of files and revisions
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that were affected, along with which fixer tools were applied. Also checks how
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many times it sees a specific key generated by one of the fixer tools defined
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below.
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$ cat >> $TESTTMP/postfixhook.py <<EOF
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> import collections
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> def file(ui, repo, rev=None, path=b'', metadata=None, **kwargs):
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> ui.status(b'fixed %s in revision %d using %s\n' %
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> (path, rev, b', '.join(metadata.keys())))
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> def summarize(ui, repo, replacements=None, wdirwritten=False,
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> metadata=None, **kwargs):
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> counts = collections.defaultdict(int)
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> keys = 0
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> for fixername, metadatalist in metadata.items():
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> for metadata in metadatalist:
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> if metadata is None:
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> continue
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> counts[fixername] += 1
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> if 'key' in metadata:
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> keys += 1
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> ui.status(b'saw "key" %d times\n' % (keys,))
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> for name, count in sorted(counts.items()):
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> ui.status(b'fixed %d files with %s\n' % (count, name))
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> if replacements:
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> ui.status(b'fixed %d revisions\n' % (len(replacements),))
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> if wdirwritten:
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> ui.status(b'fixed the working copy\n')
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> EOF
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Some mock output for fixer tools that demonstrate what could go wrong with
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expecting the metadata output format.
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$ printf 'new content\n' > $TESTTMP/missing
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$ printf 'not valid json\0new content\n' > $TESTTMP/invalid
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$ printf '{"key": "value"}\0new content\n' > $TESTTMP/valid
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Configure some fixer tools based on the output defined above, and enable the
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hooks defined above. Disable parallelism to make output of the parallel file
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processing phase stable.
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$ cat >> $HGRCPATH <<EOF
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> [extensions]
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> fix =
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> [fix]
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> metadatafalse:command=cat $TESTTMP/missing
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> metadatafalse:pattern=metadatafalse
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> metadatafalse:metadata=false
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> missing:command=cat $TESTTMP/missing
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> missing:pattern=missing
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> missing:metadata=true
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> invalid:command=cat $TESTTMP/invalid
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> invalid:pattern=invalid
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> invalid:metadata=true
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> valid:command=cat $TESTTMP/valid
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> valid:pattern=valid
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> valid:metadata=true
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> [hooks]
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> postfixfile = python:$TESTTMP/postfixhook.py:file
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> postfix = python:$TESTTMP/postfixhook.py:summarize
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> [worker]
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> enabled=false
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> EOF
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See what happens when we execute each of the fixer tools. Some print warnings,
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some write back to the file.
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$ hg init repo
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$ cd repo
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$ printf "old content\n" > metadatafalse
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$ printf "old content\n" > invalid
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$ printf "old content\n" > missing
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$ printf "old content\n" > valid
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$ hg add -q
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$ hg fix -w
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ignored invalid output from fixer tool: invalid
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fixed metadatafalse in revision 2147483647 using metadatafalse
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ignored invalid output from fixer tool: missing
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fixed valid in revision 2147483647 using valid
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saw "key" 1 times
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fixed 1 files with valid
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fixed the working copy
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$ cat metadatafalse
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new content
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$ cat missing
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old content
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$ cat invalid
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old content
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$ cat valid
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new content
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$ cd ..
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