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Differential D2987

stringutil: add function to pretty print an object
ClosedPublic

Authored by indygreg on Mar 30 2018, 5:16 PM.

Details

Reviewers
durin42
Group Reviewers
hg-reviewers
Commits
rHG2f859ad7ed8c: stringutil: add function to pretty print an object
Summary

This is inspired by the pprint() module/function (which we can't
use because the output is different on Python 2 and 3 - namely the
use of b'' literals).

We hook it up to hg debugwireproto for printing the response to
a wire protocol command.

This foreshadows future peer work, which will support decoding
CBOR responses into rich data structures.

Diff Detail

Repository
rHG Mercurial
Lint
Lint Skipped
Unit
Unit Tests Skipped

Event Timeline

indygreg created this revision.Mar 30 2018, 5:16 PM
durin42 added a subscriber: durin42.Apr 3 2018, 12:42 PM
durin42 added inline comments.
mercurial/utils/stringutil.py
39

Why this instead of pprint.pformat?

indygreg added inline comments.Apr 3 2018, 12:53 PM
mercurial/utils/stringutil.py
39

Because of differences with b'' in Python 3 :/

durin42 added inline comments.Apr 3 2018, 12:56 PM
mercurial/utils/stringutil.py
39

😭

durin42 accepted this revision.Apr 3 2018, 12:56 PM
This revision is now accepted and ready to land.Apr 3 2018, 12:56 PM
Closed by commit rHG2f859ad7ed8c: stringutil: add function to pretty print an object (authored by indygreg). · Explain WhyApr 3 2018, 12:58 PM
This revision was automatically updated to reflect the committed changes.

Revision Contents
Changeset List

Diff 7450

mercurial/debugcommands.py

del args['PUSHFILE'] del args['PUSHFILE']
res, output = peer._callpush(command, fh, res, output = peer._callpush(command, fh,
**pycompat.strkwargs(args)) **pycompat.strkwargs(args))
ui.status(_('result: %s\n') % stringutil.escapedata(res)) ui.status(_('result: %s\n') % stringutil.escapedata(res))
ui.status(_('remote output: %s\n') % ui.status(_('remote output: %s\n') %
stringutil.escapedata(output)) stringutil.escapedata(output))
else: else:
res = peer._call(command, **pycompat.strkwargs(args)) res = peer._call(command, **pycompat.strkwargs(args))
ui.status(_('response: %s\n') % stringutil.escapedata(res)) ui.status(_('response: %s\n') % stringutil.pprint(res))
elif action == 'batchbegin': elif action == 'batchbegin':
if batchedcommands is not None: if batchedcommands is not None:
raise error.Abort(_('nested batchbegin not allowed')) raise error.Abort(_('nested batchbegin not allowed'))
batchedcommands = [] batchedcommands = []
elif action == 'batchsubmit': elif action == 'batchsubmit':
# There is a batching API we could go through. But it would be # There is a batching API we could go through. But it would be

mercurial/utils/stringutil.py

_DATA_ESCAPE_RE = remod.compile(br'[\x00-\x08\x0a-\x1f\\\x7f-\xff]') _DATA_ESCAPE_RE = remod.compile(br'[\x00-\x08\x0a-\x1f\\\x7f-\xff]')
def escapedata(s): def escapedata(s):
if isinstance(s, bytearray): if isinstance(s, bytearray):
s = bytes(s) s = bytes(s)
return _DATA_ESCAPE_RE.sub(lambda m: _DATA_ESCAPE_MAP[m.group(0)], s) return _DATA_ESCAPE_RE.sub(lambda m: _DATA_ESCAPE_MAP[m.group(0)], s)
def pprint(o):
durin42Unsubmitted
Not Done

Why this instead of pprint.pformat?

durin42: Why this instead of pprint.pformat?
indygregAuthorUnsubmitted
Not Done

Because of differences with b'' in Python 3 :/

indygreg: Because of differences with `b''` in Python 3 :/
durin42Unsubmitted
Not Done

😭

durin42: 😭
"""Pretty print an object."""
if isinstance(o, (bytes, bytearray)):
return "b'%s'" % escapedata(o)
elif isinstance(o, list):
return '[%s]' % (b', '.join(pprint(a) for a in o))
elif isinstance(o, dict):
return '{%s}' % (b', '.join(
'%s: %s' % (pprint(k), pprint(v)) for k, v in sorted(o.items())))
elif isinstance(o, bool):
return b'True' if o else b'False'
else:
raise error.ProgrammingError('do not know how to format %r' % o)
def binary(s): def binary(s):
"""return true if a string is binary data""" """return true if a string is binary data"""
return bool(s and '\0' in s) return bool(s and '\0' in s)
def stringmatcher(pattern, casesensitive=True): def stringmatcher(pattern, casesensitive=True):
""" """
accepts a string, possibly starting with 're:' or 'literal:' prefix. accepts a string, possibly starting with 're:' or 'literal:' prefix.
returns the matcher name, pattern, and matcher function. returns the matcher name, pattern, and matcher function.

tests/test-http-protocol.t

s> Server: testing stub value\r\n s> Server: testing stub value\r\n
s> Date: $HTTP_DATE$\r\n s> Date: $HTTP_DATE$\r\n
s> Content-Type: application/mercurial-0.1\r\n s> Content-Type: application/mercurial-0.1\r\n
s> Content-Length: 30\r\n s> Content-Length: 30\r\n
s> \r\n s> \r\n
s> bookmarks \n s> bookmarks \n
s> namespaces \n s> namespaces \n
s> phases s> phases
response: bookmarks \nnamespaces \nphases response: b'bookmarks \nnamespaces \nphases '
Same thing, but with "httprequest" command Same thing, but with "httprequest" command
$ hg --verbose debugwireproto --peer raw http://$LOCALIP:$HGPORT << EOF $ hg --verbose debugwireproto --peer raw http://$LOCALIP:$HGPORT << EOF
> httprequest GET ?cmd=listkeys > httprequest GET ?cmd=listkeys
> user-agent: test > user-agent: test
> x-hgarg-1: namespace=namespaces > x-hgarg-1: namespace=namespaces
> EOF > EOF

tests/test-ssh-proto.t

i> write(10) -> 10: namespaces i> write(10) -> 10: namespaces
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 3: o> bufferedreadline() -> 3:
o> 30\n o> 30\n
o> bufferedread(30) -> 30: o> bufferedread(30) -> 30:
o> bookmarks \n o> bookmarks \n
o> namespaces \n o> namespaces \n
o> phases o> phases
response: bookmarks \nnamespaces \nphases response: b'bookmarks \nnamespaces \nphases '
testing ssh2 testing ssh2
creating ssh peer from handshake results creating ssh peer from handshake results
i> write(171) -> 171: i> write(171) -> 171:
i> upgrade * proto=exp-ssh-v2-0001\n (glob) i> upgrade * proto=exp-ssh-v2-0001\n (glob)
i> hello\n i> hello\n
i> between\n i> between\n
i> pairs 81\n i> pairs 81\n
i> write(10) -> 10: namespaces i> write(10) -> 10: namespaces
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 3: o> bufferedreadline() -> 3:
o> 30\n o> 30\n
o> bufferedread(30) -> 30: o> bufferedread(30) -> 30:
o> bookmarks \n o> bookmarks \n
o> namespaces \n o> namespaces \n
o> phases o> phases
response: bookmarks \nnamespaces \nphases response: b'bookmarks \nnamespaces \nphases '
$ cd .. $ cd ..
Test listkeys for bookmarks Test listkeys for bookmarks
$ hg init bookmarkrepo $ hg init bookmarkrepo
$ cd bookmarkrepo $ cd bookmarkrepo
$ echo 0 > foo $ echo 0 > foo
i> write(9) -> 9: i> write(9) -> 9:
i> listkeys\n i> listkeys\n
i> write(12) -> 12: i> write(12) -> 12:
i> namespace 9\n i> namespace 9\n
i> write(9) -> 9: bookmarks i> write(9) -> 9: bookmarks
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 2: o> bufferedreadline() -> 2:
o> 0\n o> 0\n
response: response: b''
testing ssh2 testing ssh2
creating ssh peer from handshake results creating ssh peer from handshake results
i> write(171) -> 171: i> write(171) -> 171:
i> upgrade * proto=exp-ssh-v2-0001\n (glob) i> upgrade * proto=exp-ssh-v2-0001\n (glob)
i> hello\n i> hello\n
i> between\n i> between\n
i> pairs 81\n i> pairs 81\n
i> write(9) -> 9: i> write(9) -> 9:
i> listkeys\n i> listkeys\n
i> write(12) -> 12: i> write(12) -> 12:
i> namespace 9\n i> namespace 9\n
i> write(9) -> 9: bookmarks i> write(9) -> 9: bookmarks
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 2: o> bufferedreadline() -> 2:
o> 0\n o> 0\n
response: response: b''
With a single bookmark set With a single bookmark set
$ hg book -r 0 bookA $ hg book -r 0 bookA
$ debugwireproto << EOF $ debugwireproto << EOF
> command listkeys > command listkeys
> namespace bookmarks > namespace bookmarks
> EOF > EOF
i> listkeys\n i> listkeys\n
i> write(12) -> 12: i> write(12) -> 12:
i> namespace 9\n i> namespace 9\n
i> write(9) -> 9: bookmarks i> write(9) -> 9: bookmarks
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 3: o> bufferedreadline() -> 3:
o> 46\n o> 46\n
o> bufferedread(46) -> 46: bookA 68986213bd4485ea51533535e3fc9e78007a711f o> bufferedread(46) -> 46: bookA 68986213bd4485ea51533535e3fc9e78007a711f
response: bookA 68986213bd4485ea51533535e3fc9e78007a711f response: b'bookA 68986213bd4485ea51533535e3fc9e78007a711f'
testing ssh2 testing ssh2
creating ssh peer from handshake results creating ssh peer from handshake results
i> write(171) -> 171: i> write(171) -> 171:
i> upgrade * proto=exp-ssh-v2-0001\n (glob) i> upgrade * proto=exp-ssh-v2-0001\n (glob)
i> hello\n i> hello\n
i> between\n i> between\n
i> pairs 81\n i> pairs 81\n
i> listkeys\n i> listkeys\n
i> write(12) -> 12: i> write(12) -> 12:
i> namespace 9\n i> namespace 9\n
i> write(9) -> 9: bookmarks i> write(9) -> 9: bookmarks
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 3: o> bufferedreadline() -> 3:
o> 46\n o> 46\n
o> bufferedread(46) -> 46: bookA 68986213bd4485ea51533535e3fc9e78007a711f o> bufferedread(46) -> 46: bookA 68986213bd4485ea51533535e3fc9e78007a711f
response: bookA 68986213bd4485ea51533535e3fc9e78007a711f response: b'bookA 68986213bd4485ea51533535e3fc9e78007a711f'
With multiple bookmarks set With multiple bookmarks set
$ hg book -r 1 bookB $ hg book -r 1 bookB
$ debugwireproto << EOF $ debugwireproto << EOF
> command listkeys > command listkeys
> namespace bookmarks > namespace bookmarks
> EOF > EOF
i> namespace 9\n i> namespace 9\n
i> write(9) -> 9: bookmarks i> write(9) -> 9: bookmarks
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 3: o> bufferedreadline() -> 3:
o> 93\n o> 93\n
o> bufferedread(93) -> 93: o> bufferedread(93) -> 93:
o> bookA 68986213bd4485ea51533535e3fc9e78007a711f\n o> bookA 68986213bd4485ea51533535e3fc9e78007a711f\n
o> bookB 1880f3755e2e52e3199e0ee5638128b08642f34d o> bookB 1880f3755e2e52e3199e0ee5638128b08642f34d
response: bookA 68986213bd4485ea51533535e3fc9e78007a711f\nbookB 1880f3755e2e52e3199e0ee5638128b08642f34d response: b'bookA 68986213bd4485ea51533535e3fc9e78007a711f\nbookB 1880f3755e2e52e3199e0ee5638128b08642f34d'
testing ssh2 testing ssh2
creating ssh peer from handshake results creating ssh peer from handshake results
i> write(171) -> 171: i> write(171) -> 171:
i> upgrade * proto=exp-ssh-v2-0001\n (glob) i> upgrade * proto=exp-ssh-v2-0001\n (glob)
i> hello\n i> hello\n
i> between\n i> between\n
i> pairs 81\n i> pairs 81\n
i> namespace 9\n i> namespace 9\n
i> write(9) -> 9: bookmarks i> write(9) -> 9: bookmarks
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 3: o> bufferedreadline() -> 3:
o> 93\n o> 93\n
o> bufferedread(93) -> 93: o> bufferedread(93) -> 93:
o> bookA 68986213bd4485ea51533535e3fc9e78007a711f\n o> bookA 68986213bd4485ea51533535e3fc9e78007a711f\n
o> bookB 1880f3755e2e52e3199e0ee5638128b08642f34d o> bookB 1880f3755e2e52e3199e0ee5638128b08642f34d
response: bookA 68986213bd4485ea51533535e3fc9e78007a711f\nbookB 1880f3755e2e52e3199e0ee5638128b08642f34d response: b'bookA 68986213bd4485ea51533535e3fc9e78007a711f\nbookB 1880f3755e2e52e3199e0ee5638128b08642f34d'
Test pushkey for bookmarks Test pushkey for bookmarks
$ debugwireproto << EOF $ debugwireproto << EOF
> command pushkey > command pushkey
> namespace bookmarks > namespace bookmarks
> key remote > key remote
> old > old
i> write(40) -> 40: 68986213bd4485ea51533535e3fc9e78007a711f i> write(40) -> 40: 68986213bd4485ea51533535e3fc9e78007a711f
i> write(6) -> 6: i> write(6) -> 6:
i> old 0\n i> old 0\n
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 2: o> bufferedreadline() -> 2:
o> 2\n o> 2\n
o> bufferedread(2) -> 2: o> bufferedread(2) -> 2:
o> 1\n o> 1\n
response: 1\n response: b'1\n'
testing ssh2 testing ssh2
creating ssh peer from handshake results creating ssh peer from handshake results
i> write(171) -> 171: i> write(171) -> 171:
i> upgrade * proto=exp-ssh-v2-0001\n (glob) i> upgrade * proto=exp-ssh-v2-0001\n (glob)
i> hello\n i> hello\n
i> between\n i> between\n
i> pairs 81\n i> pairs 81\n
i> write(40) -> 40: 68986213bd4485ea51533535e3fc9e78007a711f i> write(40) -> 40: 68986213bd4485ea51533535e3fc9e78007a711f
i> write(6) -> 6: i> write(6) -> 6:
i> old 0\n i> old 0\n
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 2: o> bufferedreadline() -> 2:
o> 2\n o> 2\n
o> bufferedread(2) -> 2: o> bufferedread(2) -> 2:
o> 1\n o> 1\n
response: 1\n response: b'1\n'
$ hg bookmarks $ hg bookmarks
bookA 0:68986213bd44 bookA 0:68986213bd44
bookB 1:1880f3755e2e bookB 1:1880f3755e2e
remote 0:68986213bd44 remote 0:68986213bd44
$ cd .. $ cd ..
i> listkeys\n i> listkeys\n
i> write(12) -> 12: i> write(12) -> 12:
i> namespace 6\n i> namespace 6\n
i> write(6) -> 6: phases i> write(6) -> 6: phases
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 3: o> bufferedreadline() -> 3:
o> 15\n o> 15\n
o> bufferedread(15) -> 15: publishing True o> bufferedread(15) -> 15: publishing True
response: publishing True response: b'publishing True'
testing ssh2 testing ssh2
creating ssh peer from handshake results creating ssh peer from handshake results
i> write(171) -> 171: i> write(171) -> 171:
i> upgrade * proto=exp-ssh-v2-0001\n (glob) i> upgrade * proto=exp-ssh-v2-0001\n (glob)
i> hello\n i> hello\n
i> between\n i> between\n
i> pairs 81\n i> pairs 81\n
i> listkeys\n i> listkeys\n
i> write(12) -> 12: i> write(12) -> 12:
i> namespace 6\n i> namespace 6\n
i> write(6) -> 6: phases i> write(6) -> 6: phases
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 3: o> bufferedreadline() -> 3:
o> 15\n o> 15\n
o> bufferedread(15) -> 15: publishing True o> bufferedread(15) -> 15: publishing True
response: publishing True response: b'publishing True'
Create some commits Create some commits
$ echo 0 > foo $ echo 0 > foo
$ hg add foo $ hg add foo
$ hg -q commit -m initial $ hg -q commit -m initial
$ hg phase --public $ hg phase --public
$ echo 1 > foo $ echo 1 > foo
i> write(6) -> 6: phases i> write(6) -> 6: phases
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 4: o> bufferedreadline() -> 4:
o> 101\n o> 101\n
o> bufferedread(101) -> 101: o> bufferedread(101) -> 101:
o> 20b8a89289d80036e6c4e87c2083e3bea1586637 1\n o> 20b8a89289d80036e6c4e87c2083e3bea1586637 1\n
o> c4750011d906c18ea2f0527419cbc1a544435150 1\n o> c4750011d906c18ea2f0527419cbc1a544435150 1\n
o> publishing True o> publishing True
response: 20b8a89289d80036e6c4e87c2083e3bea1586637 1\nc4750011d906c18ea2f0527419cbc1a544435150 1\npublishing True response: b'20b8a89289d80036e6c4e87c2083e3bea1586637 1\nc4750011d906c18ea2f0527419cbc1a544435150 1\npublishing True'
testing ssh2 testing ssh2
creating ssh peer from handshake results creating ssh peer from handshake results
i> write(171) -> 171: i> write(171) -> 171:
i> upgrade * proto=exp-ssh-v2-0001\n (glob) i> upgrade * proto=exp-ssh-v2-0001\n (glob)
i> hello\n i> hello\n
i> between\n i> between\n
i> pairs 81\n i> pairs 81\n
i> write(6) -> 6: phases i> write(6) -> 6: phases
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 4: o> bufferedreadline() -> 4:
o> 101\n o> 101\n
o> bufferedread(101) -> 101: o> bufferedread(101) -> 101:
o> 20b8a89289d80036e6c4e87c2083e3bea1586637 1\n o> 20b8a89289d80036e6c4e87c2083e3bea1586637 1\n
o> c4750011d906c18ea2f0527419cbc1a544435150 1\n o> c4750011d906c18ea2f0527419cbc1a544435150 1\n
o> publishing True o> publishing True
response: 20b8a89289d80036e6c4e87c2083e3bea1586637 1\nc4750011d906c18ea2f0527419cbc1a544435150 1\npublishing True response: b'20b8a89289d80036e6c4e87c2083e3bea1586637 1\nc4750011d906c18ea2f0527419cbc1a544435150 1\npublishing True'
Single draft head Single draft head
$ hg phase --public -r 2 $ hg phase --public -r 2
$ debugwireproto << EOF $ debugwireproto << EOF
> command listkeys > command listkeys
> namespace phases > namespace phases
> EOF > EOF
i> namespace 6\n i> namespace 6\n
i> write(6) -> 6: phases i> write(6) -> 6: phases
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 3: o> bufferedreadline() -> 3:
o> 58\n o> 58\n
o> bufferedread(58) -> 58: o> bufferedread(58) -> 58:
o> c4750011d906c18ea2f0527419cbc1a544435150 1\n o> c4750011d906c18ea2f0527419cbc1a544435150 1\n
o> publishing True o> publishing True
response: c4750011d906c18ea2f0527419cbc1a544435150 1\npublishing True response: b'c4750011d906c18ea2f0527419cbc1a544435150 1\npublishing True'
testing ssh2 testing ssh2
creating ssh peer from handshake results creating ssh peer from handshake results
i> write(171) -> 171: i> write(171) -> 171:
i> upgrade * proto=exp-ssh-v2-0001\n (glob) i> upgrade * proto=exp-ssh-v2-0001\n (glob)
i> hello\n i> hello\n
i> between\n i> between\n
i> pairs 81\n i> pairs 81\n
i> namespace 6\n i> namespace 6\n
i> write(6) -> 6: phases i> write(6) -> 6: phases
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 3: o> bufferedreadline() -> 3:
o> 58\n o> 58\n
o> bufferedread(58) -> 58: o> bufferedread(58) -> 58:
o> c4750011d906c18ea2f0527419cbc1a544435150 1\n o> c4750011d906c18ea2f0527419cbc1a544435150 1\n
o> publishing True o> publishing True
response: c4750011d906c18ea2f0527419cbc1a544435150 1\npublishing True response: b'c4750011d906c18ea2f0527419cbc1a544435150 1\npublishing True'
All public heads All public heads
$ hg phase --public -r 4 $ hg phase --public -r 4
$ debugwireproto << EOF $ debugwireproto << EOF
> command listkeys > command listkeys
> namespace phases > namespace phases
> EOF > EOF
i> listkeys\n i> listkeys\n
i> write(12) -> 12: i> write(12) -> 12:
i> namespace 6\n i> namespace 6\n
i> write(6) -> 6: phases i> write(6) -> 6: phases
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 3: o> bufferedreadline() -> 3:
o> 15\n o> 15\n
o> bufferedread(15) -> 15: publishing True o> bufferedread(15) -> 15: publishing True
response: publishing True response: b'publishing True'
testing ssh2 testing ssh2
creating ssh peer from handshake results creating ssh peer from handshake results
i> write(171) -> 171: i> write(171) -> 171:
i> upgrade * proto=exp-ssh-v2-0001\n (glob) i> upgrade * proto=exp-ssh-v2-0001\n (glob)
i> hello\n i> hello\n
i> between\n i> between\n
i> pairs 81\n i> pairs 81\n
i> listkeys\n i> listkeys\n
i> write(12) -> 12: i> write(12) -> 12:
i> namespace 6\n i> namespace 6\n
i> write(6) -> 6: phases i> write(6) -> 6: phases
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 3: o> bufferedreadline() -> 3:
o> 15\n o> 15\n
o> bufferedread(15) -> 15: publishing True o> bufferedread(15) -> 15: publishing True
response: publishing True response: b'publishing True'
Setting public phase via pushkey Setting public phase via pushkey
$ hg phase --draft --force -r . $ hg phase --draft --force -r .
$ debugwireproto << EOF $ debugwireproto << EOF
> command pushkey > command pushkey
> namespace phases > namespace phases
i> write(6) -> 6: i> write(6) -> 6:
i> old 1\n i> old 1\n
i> write(1) -> 1: 1 i> write(1) -> 1: 1
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 2: o> bufferedreadline() -> 2:
o> 2\n o> 2\n
o> bufferedread(2) -> 2: o> bufferedread(2) -> 2:
o> 1\n o> 1\n
response: 1\n response: b'1\n'
testing ssh2 testing ssh2
creating ssh peer from handshake results creating ssh peer from handshake results
i> write(171) -> 171: i> write(171) -> 171:
i> upgrade * proto=exp-ssh-v2-0001\n (glob) i> upgrade * proto=exp-ssh-v2-0001\n (glob)
i> hello\n i> hello\n
i> between\n i> between\n
i> pairs 81\n i> pairs 81\n
i> write(6) -> 6: i> write(6) -> 6:
i> old 1\n i> old 1\n
i> write(1) -> 1: 1 i> write(1) -> 1: 1
i> flush() -> None i> flush() -> None
o> bufferedreadline() -> 2: o> bufferedreadline() -> 2:
o> 2\n o> 2\n
o> bufferedread(2) -> 2: o> bufferedread(2) -> 2:
o> 1\n o> 1\n
response: 1\n response: b'1\n'
$ hg phase . $ hg phase .
4: public 4: public
$ cd .. $ cd ..
Test batching of requests Test batching of requests