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Create an extension to test bundle2 API
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$ cat > bundle2.py << EOF
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> """A small extension to test bundle2 implementation
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>
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> Current bundle2 implementation is far too limited to be used in any core
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> code. We still need to be able to test it while it grow up.
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> """
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>
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> import sys
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> from mercurial import cmdutil
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> from mercurial import bundle2
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> cmdtable = {}
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> command = cmdutil.command(cmdtable)
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>
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> @command('bundle2', [], '')
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> def cmdbundle2(ui, repo):
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> """write a bundle2 container on standard ouput"""
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> bundle = bundle2.bundle20()
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> for chunk in bundle.getchunks():
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> ui.write(chunk)
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>
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> @command('unbundle2', [], '')
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> def cmdunbundle2(ui, repo):
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> """read a bundle2 container from standard input"""
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> unbundler = bundle2.unbundle20(sys.stdin)
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> ui.write('options count: %i\n' % len(unbundler.params))
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> parts = list(unbundler)
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> ui.write('parts count: %i\n' % len(parts))
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> EOF
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$ cat >> $HGRCPATH << EOF
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> [extensions]
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> bundle2=$TESTTMP/bundle2.py
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> EOF
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The extension requires a repo (currently unused)
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$ hg init main
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$ cd main
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$ touch a
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$ hg add a
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$ hg commit -m 'a'
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Test simple generation of empty bundle
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$ hg bundle2
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HG20\x00\x00\x00\x00 (no-eol) (esc)
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Test parsing of an empty bundle
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$ hg bundle2 | hg unbundle2
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options count: 0
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parts count: 0
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Test old style bundle are detected and refused
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$ hg bundle --all ../bundle.hg
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1 changesets found
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$ hg unbundle2 < ../bundle.hg
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abort: unknown bundle version 10
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[255]
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