>
>> I thought about this briefly, and got about that far.. glad you got
>> further. :-) --[[Joey]]
+
+>> Or, one [[!taglink could_also_refer|pagespec_in_DL_style]] to the language of [[!wikipedia description logics]]: their formulas actually define classes of objects through quantified relations to other classes. --Ivan Z.
>
> Another option would be go with a more functional syntax. The concept here would
> be to allow a pagespec to appear in a 'pagespec function' anywhere a page can. e.g.
>> So, equivilant example: `define(bugs, bugs/* and !*/Discussion) and define(openbugs, bugs and !link(done)) and openbugs and !link(openbugs)`
>>
+
>> Re recursion, it is avoided.. but building a pagespec that is O(N^X) where N is the
>> number of pages in the wiki is not avoided. Probably need to add DOS prevention.
>> --[[Joey]]
>>>> Yeah, guess that'd work. :-)
-> One quick further thought. All the above discussion assumes that 'dependency' is the
+> <a id="another_kind_of_links" />One quick further thought. All the above discussion assumes that 'dependency' is the
> same as 'links to', which is not really true. For example, you'd like to be able to say
> "This bug does not depend upon [ [ link to other bug ] ]" and not have a dependency.
> Without having different types of links, I don't see how this would be possible.
>
> -- [[Will]]
+>> I saw that this issue is targeted at by the work on [[structured page data#another_kind_of_links]]. --Ivan Z.
+
Okie - I've had a quick attempt at this. Initial patch attached. This one doesn't quite work.
And there is still a lot of debugging stuff in there.
I've lost track of the indent level, so I'm going back to not indented - I think this is a working [[patch]] taking into
account all comments above (which doesn't mean it is above reproach :) ). --[[Will]]
+> Very belated code review of last version of the patch:
+>
+> * `is_globlist` is no longer needed
+> * I don't understand why the pagespec match regexp is changed
+> from having flags `igx` to `ixgs`. Don't see why you
+> want `.` to match '\n` in it, and don't see any `.` in the regexp
+> anyway?
+> * Some changes of `@_` to `%params` in `pagespec_makeperl` do not
+> make sense to me. I don't see where \%params is defined and populated,
+> except with `\$params{specFunc}`.
+> * Seems that the only reason `match_glob` has to check for `~` is
+> because when a named spec appears in a pagespec, it is translated
+> to `match_glob("~foo")`. If, instead, `pagespec_makeperl` checked
+> for named specs, it could convert them into `check_named_spec("foo")`
+> and avoid that ugliness.
+> * The changes to `match_link` seem either unecessary, or incomplete.
+> Shouldn't it check for named specs and call
+> `check_named_spec_existential`?
+> * Generally, the need to modify `match_*` functions so that they
+> check for and handle named pagespecs seems suboptimal, if
+> only because there might be others people may want to use named
+> pagespecs with. It would be possible to move this check
+> to `pagespec_makeperl`, by having it check if the parameter
+> passed to a pagespec function looked like a named pagespec.
+> The only issue is that some pagespec functions take a parameter
+> that is not a page name at all, and it could be weird
+> if such a parameter were accidentially interpreted as a named
+> pagespec. (But, that seems unlikely to happen.)
+> * I need to check if your trick to avoid infinite recursion
+> works if there are two named specs that recursively
+> call one-another. I suspect it does, but will test this
+> myself..
+>
+> --[[Joey]]
+
----
diff --git a/IkiWiki.pm b/IkiWiki.pm
index 4e4da11..8b3cdfe 100644
--- a/IkiWiki.pm
+++ b/IkiWiki.pm
- @@ -1550,7 +1550,16 @@ sub globlist_to_pagespec ($) { #{{{
+ @@ -1550,7 +1550,16 @@ sub globlist_to_pagespec ($) {
- sub is_globlist ($) { #{{{
+ sub is_globlist ($) {
my $s=shift;
- return ( $s =~ /[^\s]+\s+([^\s]+)/ && $1 ne "and" && $1 ne "or" );
+ return ! ($s =~ /
+ ) |
+ (\s and \s) | (\s or \s) # or we find 'and' or 'or' somewhere
+ /xs);
- } #}}}
+ }
- sub safequote ($) { #{{{
- @@ -1631,7 +1640,7 @@ sub pagespec_merge ($$) { #{{{
+ sub safequote ($) {
+ @@ -1631,7 +1640,7 @@ sub pagespec_merge ($$) {
return "($a) or ($b)";
- } #}}}
+ }
- -sub pagespec_translate ($) { #{{{
- +sub pagespec_makeperl ($) { #{{{
+ -sub pagespec_translate ($) {
+ +sub pagespec_makeperl ($) {
my $spec=shift;
# Support for old-style GlobLists.
- @@ -1650,12 +1659,14 @@ sub pagespec_translate ($) { #{{{
+ @@ -1650,12 +1659,14 @@ sub pagespec_translate ($) {
|
\) # )
|
my $word=$1;
if (lc $word eq 'and') {
$code.=' &&';
- @@ -1666,16 +1677,23 @@ sub pagespec_translate ($) { #{{{
+ @@ -1666,16 +1677,23 @@ sub pagespec_translate ($) {
elsif ($word eq "(" || $word eq ")" || $word eq "!") {
$code.=' '.$word;
}
}
}
- @@ -1683,8 +1701,18 @@ sub pagespec_translate ($) { #{{{
+ @@ -1683,8 +1701,18 @@ sub pagespec_translate ($) {
$code=0;
}
+ return 'sub { my $page=shift; my %params = @_; '.$code.' }';
- +} #}}}
+ +}
+
- +sub pagespec_translate ($) { #{{{
+ +sub pagespec_translate ($) {
+ my $spec=shift;
+
+ my $code = pagespec_makeperl($spec);
no warnings;
- return eval 'sub { my $page=shift; '.$code.' }';
+ return eval $code;
- } #}}}
+ }
- sub pagespec_match ($$;@) { #{{{
- @@ -1699,7 +1727,7 @@ sub pagespec_match ($$;@) { #{{{
+ sub pagespec_match ($$;@) {
+ @@ -1699,7 +1727,7 @@ sub pagespec_match ($$;@) {
my $sub=pagespec_translate($spec);
return IkiWiki::FailReason->new("syntax error in pagespec \"$spec\"") if $@;
- return $sub->($page, @params);
+ return $sub->($page, @params, specFuncs => {});
- } #}}}
+ }
- sub pagespec_valid ($) { #{{{
- @@ -1748,11 +1776,78 @@ sub new { #{{{
+ sub pagespec_valid ($) {
+ @@ -1748,11 +1776,78 @@ sub new {
package IkiWiki::PageSpec;
+ }
+}
+
- sub match_glob ($$;@) { #{{{
+ sub match_glob ($$;@) {
my $page=shift;
my $glob=shift;
my %params=@_;
my $from=exists $params{location} ? $params{location} : '';
# relative matching
- @@ -1782,11 +1877,12 @@ sub match_internal ($$;@) { #{{{
+ @@ -1782,11 +1877,12 @@ sub match_internal ($$;@) {
- sub match_link ($$;@) { #{{{
+ sub match_link ($$;@) {
my $page=shift;
- my $link=lc(shift);
+ my $fulllink=shift;
# relative matching
if ($link =~ m!^\.! && defined $from) {
$from=~s#/?[^/]+$##;
- @@ -1804,19 +1900,32 @@ sub match_link ($$;@) { #{{{
+ @@ -1804,19 +1900,32 @@ sub match_link ($$;@) {
}
else {
return IkiWiki::SuccessReason->new("$page links to page $p matching $link")
}
}
return IkiWiki::FailReason->new("$page does not link to $link");
- } #}}}
+ }
- sub match_backlink ($$;@) { #{{{
+ sub match_backlink ($$;@) {
- return match_link($_[1], $_[0], @_);
+ my $page=shift;
+ my $backlink=shift;
+ }
+
+ return match_link($backlink, $page, @params);
- } #}}}
+ }
- sub match_created_before ($$;@) { #{{{
+ sub match_created_before ($$;@) {
my $page=shift;
my $testpage=shift;
+ my @params=@_;
if (exists $IkiWiki::pagectime{$testpage}) {
if ($IkiWiki::pagectime{$page} < $IkiWiki::pagectime{$testpage}) {
- @@ -1834,6 +1943,11 @@ sub match_created_before ($$;@) { #{{{
- sub match_created_after ($$;@) { #{{{
+ @@ -1834,6 +1943,11 @@ sub match_created_before ($$;@) {
+ sub match_created_after ($$;@) {
my $page=shift;
my $testpage=shift;
+ my @params=@_;
sipb-www / ikiwiki.git / blobdiff