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Conf checker syntax rules for spec files
Warning: This may go out of date. Crossing fingers.
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Intro:
The syntax checker as it exists now just verifies that setting names
in a conf file seem to be documented in the matching spec file. It
does not validate the values for settings.
For example, for
[mystanza]
frobnicate = true
We check that frobnicate is mentioned in the documentation for
mystanza, but we do not check that true is an accepted value.
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Stanza Definitions in spec files:
- Must be in
[brackets]
- Must be against the left edge
USED:
[my_stanza]
IGNORED:
[my_stanza]
Indenting stanzas is useful when referencing stanzas for another file,
or example purposes.
-------------
Settings:
Must contain an equals sign, eg
x = y
Indented lines with equals signs are currently used.
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Setting Matching:
Settings are validated two ways.
1 - Exact matching
2 - Prefix matching
Exact matching:
If the spec file has, for example
setting_x = <integer>
then a conf file line that has
setting_x = something
will be accepted as valid.
Prefix matching:
For settings which are written in spec files with the character '<' or
'-', we will do matching of the text prior to these characters
If the spec file has:
FOO-class = <foo_stanza>
Then settings beginning with "FOO" will be seen as valid.
ACCEPTED in conf:
FOO = true
FOOS = true
FOO-something = true
FOODEATINGMONSTER = true
NOT ACCEPTED in conf:
foo = true
Settings with arbitrary names:
<name> = enabled|disabled
ACCEPTED in conf:
any setting names are accepted here
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Stanza matching:
Which spec settings are allowed for which stanzas?
Any settings declared in a spec file without any declared stanza, or
after a declared [default] stanza are considered valid for all stanzas
in a conf file.
So for a spec file:
foo = bar
[default]
foo2 = bar2
ACCEPTED in conf:
foo = yes
foo2 = no
[whatever]
foo = ...
foo2 = ...
Settings following an explicit string stanza will only be accepted for
that stanza:
For a spec file containing:
[access_allowed]
admin = true|false
ACCEPTED in conf:
[access_allowed]
admin = yes
NOT ACCEPTED in conf:
admin = false
[default]
admin = true
[something_else]
admin = true
Some stanzas are matched with prefix-matching similar to settings.
Spec stanzas containing <, :, or . are considered to match conf
stanzas if they match for the text to the left of any of the above
characters.
This can be used to show that stanzas of a particular prefix can have
settings, or that there are settings which belong to stanzas that can
be named arbitrarily.
For a spec file containing
[category:name]
access = true|false
ACCEPTED in conf:
[category:fruit]
access = true
[category]
access = true
[categorywhatever]
access = true
[category::::::anything..<><>goes!]
access = true
For a spec file containing:
blacklist.n = <regular expression>
ACCEPTED in conf:
blacklist = hi
blacklist.5 = whats up?
blacklist.pie_bob = apples!
For a spec file containing:
[<stanza_name>]
owner = <user>
ACCEPTED in conf:
[anything]
owner = jrodman
[really?:::_anything]
owner = ewoo
[Yep]
owner = splunk

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