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spec/scansion/pubsub_advanced.scs @ 11748:88ba05494d17 0.11
makefile: fix prosody.version target
POSIX is quite explicit regarding the precedence of AND-OR lists [0]:
> The operators "&&" and "||" shall have equal precedence and shall be
> evaluated with left associativity. For example, both of the following
> commands write solely `bar` to standard output:
> false && echo foo || echo bar
> true || echo foo && echo bar
Given that, `prosody.version` target behaves as
((((((test -f prosody.release && cp ...) ||
test -f ...) &&
sed ...) ||
test -f ...) &&
hexdump ...) ||
echo unknown > $@)
In the case of release tarballs, `prosody.release` does exist, so the
first AND pair is executed. Given that it's successful, then the first
`test -f` in the OR pair is ignored, and instead the `sed` in the AND
pair is executed. `sed` success, as `.hg_archival.txt` exists, making
the second `test -f` in the OR pair ignored, and `hexdump` in the AND
pair is executed. Now, given that `.hg` doesn't exist, it fails, so the
last `echo` is run, overwriting `prosody.version` with `unknown`.
This can be worked around placing `()` around the AND pairs. Decided to use
conditionals instead, as I think they better communicate the intention
of the block.
[0]: https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_09_03
author | Lucas <lucas@sexy.is> |
---|---|
date | Sun, 15 Aug 2021 04:10:36 +0000 |
parent | 9291:329a670ae975 |
child | 11429:ef623d719894 |
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# Pubsub: Node creation, publish, subscribe, affiliations and delete [Client] Balthasar jid: admin@localhost password: password [Client] Romeo jid: romeo@localhost password: password [Client] Juliet jid: juliet@localhost password: password --------- Romeo connects Romeo sends: <iq type="set" to="pubsub.localhost" id='create1'> <pubsub xmlns="http://jabber.org/protocol/pubsub"> <create node="princely_musings"/> </pubsub> </iq> Romeo receives: <iq type="error" id='create1'> <error type="auth"> <forbidden xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'/> </error> </iq> Balthasar connects Balthasar sends: <iq type='set' to='pubsub.localhost' id='create2'> <pubsub xmlns='http://jabber.org/protocol/pubsub'> <create node='princely_musings'/> </pubsub> </iq> Balthasar receives: <iq type="result" id='create2'/> Balthasar sends: <iq type="set" to="pubsub.localhost" id='create3'> <pubsub xmlns="http://jabber.org/protocol/pubsub"> <create node="princely_musings"/> </pubsub> </iq> Balthasar receives: <iq type="error" id='create3'> <error type="cancel"> <conflict xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/> </error> </iq> Juliet connects Juliet sends: <iq type="set" to="pubsub.localhost" id='sub1'> <pubsub xmlns="http://jabber.org/protocol/pubsub"> <subscribe node="princely_musings" jid="${Romeo's full JID}"/> </pubsub> </iq> Juliet receives: <iq type="error" id='sub1'/> Juliet sends: <iq type="set" to="pubsub.localhost" id='sub2'> <pubsub xmlns="http://jabber.org/protocol/pubsub"> <subscribe node="princely_musings" jid="${Juliet's full JID}"/> </pubsub> </iq> Juliet receives: <iq type="result" id='sub2'> <pubsub xmlns='http://jabber.org/protocol/pubsub'> <subscription jid="${Juliet's full JID}" node='princely_musings' subscription='subscribed'/> </pubsub> </iq> Balthasar sends: <iq type="get" id='aff1' to='pubsub.localhost'> <pubsub xmlns="http://jabber.org/protocol/pubsub#owner"> <affiliations node="princely_musings"/> </pubsub> </iq> Balthasar receives: <iq type="result" id='aff1' from='pubsub.localhost'> <pubsub xmlns="http://jabber.org/protocol/pubsub#owner"> <affiliations node="princely_musings"> <affiliation affiliation='owner' jid='admin@localhost' xmlns='http://jabber.org/protocol/pubsub#owner'/> </affiliations> </pubsub> </iq> Balthasar sends: <iq type="set" id='aff2' to='pubsub.localhost'> <pubsub xmlns="http://jabber.org/protocol/pubsub#owner"> <affiliations node="princely_musings"> <affiliation affiliation='owner' jid='admin@localhost' xmlns='http://jabber.org/protocol/pubsub#owner'/> <affiliation jid="${Romeo's JID}" affiliation="publisher"/> </affiliations> </pubsub> </iq> Balthasar receives: <iq type="result" id='aff2' from='pubsub.localhost'/> Romeo sends: <iq type="set" to="pubsub.localhost" id='pub1'> <pubsub xmlns="http://jabber.org/protocol/pubsub"> <publish node="princely_musings"> <item id="current"> <entry xmlns="http://www.w3.org/2005/Atom"> <title>Soliloquy</title> <summary>Lorem ipsum dolor sit amet</summary> </entry> </item> </publish> </pubsub> </iq> Juliet receives: <message type="headline" from="pubsub.localhost"> <event xmlns="http://jabber.org/protocol/pubsub#event"> <items node="princely_musings"> <item id="current"> <entry xmlns="http://www.w3.org/2005/Atom"> <title>Soliloquy</title> <summary>Lorem ipsum dolor sit amet</summary> </entry> </item> </items> </event> </message> Romeo receives: <iq type="result" id='pub1'/> Juliet sends: <iq type="set" to="pubsub.localhost" id='unsub1'> <pubsub xmlns="http://jabber.org/protocol/pubsub"> <unsubscribe node="princely_musings" jid="${Juliet's full JID}"/> </pubsub> </iq> Juliet receives: <iq type="result" id='unsub1'/> Balthasar sends: <iq type="set" to="pubsub.localhost" id='del1'> <pubsub xmlns="http://jabber.org/protocol/pubsub#owner"> <delete node="princely_musings"/> </pubsub> </iq> Balthasar receives: <iq type="result" from='pubsub.localhost' id='del1'/> Romeo disconnects // vim: syntax=xml: