>
>> 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.
>> the first parameter rather than the second. Ikiwiki is my first real perl hacking and I'm still discovering
>> good ways to write things in perl.
>>
+>>>> `%params` contains the parameters passed to `pagespec_match`, not
+>>>> user-supplied parameters. The user-supplied parameter to a function
+>>>> like `match_glob()` or `match_link()` is passed in the second positional parameter. --[[Joey]]
+
+>>>>> OK. That seems reasonable then. The only problem is that my PERLfu is not strong enough to make it
+>>>>> work. I really have to wonder what substance was influencing the designers of PERL...
+>>>>> I can't figure out how to use the %params. And I'm pissed off enough with PERL that I'm not going
+>>>>> to try and figure it out any more. There are two patches below now. The first one uses an extra
+>>>>> argument and works. The second one tries to use %params and doesn't - take your pick :-). -- [[Will]]
+
>> What do you think is best to do about `is_globlist()`? At the moment it requires that the 'second word', as
>> delimited by a space and ignoring parens, is 'and' or 'or'. This doesn't hold in the above example pagespecs (so I just hard wired it to 0 to test my patch).
>> My thought was just to search for 'and' or 'or' as words anywhere in the pagespec. Thoughts?
+>>> Dunno, we could just finish deprecating it. Or change the regexp to
+>>> skip over spaces in parens. (`/[^\s]+\s+([^)]+)/`) --[[Joey]]
+
+>>>> I think I have a working regexp now.
+
>> Oh, one more thing. In pagespec_translate (now pagespec_makeperl), there is a part of the regular expression for `# any other text`.
>> This contained `()`, which has no effect. I replaced that with `\(\)`, but that is a change in the definition of pagespecs unrelated to the
>> rest of this patch. In a related change, commands were not able to contain `)` in their parameters. I've extended that so the cannot
>> contain `(` or `)`. -- [[Will]]
+>>> `[^\s()]+` is a character class matching all characters not spaces or
+>>> parens. Since the pervious terminals in the regexp consume most
+>>> occurances of an open paren or close paren, it's unlikely for one to
+>>> get through to that part of the regexp. For example, "foo()" will be
+>>> matched by the command matcher; "(foo)" will be matched by the open
+>>> paren literal terminal. "foo(" and "foo)" can get through to the
+>>> end, and would be matched as a page name, if it didn't exclude parens.
+>>>
+>>> So why exclude them? Well, consider "foo and(bar and baz)". We don't
+>>> want it to match "and(" as a page name!
+>>>
+>>> Escaping the parens in the character class actually changes nothing; the
+>>> changed character class still matches all characters not spaces or
+>>> parens. (Try it!).
+>>>
+>>> Re commands containing '(', I don't really see any reason not to
+>>> allow that, unless it breaks something. --[[Joey]]
+
+>>>> Oh, I didn't realise you didn't need to escape parens inside []. All else I
+>>>> I understood. I have stopped commands from containing parens because
+>>>> once you allow that then you might have a extra level of depth in the parsing
+>>>> of define() statements. -- [[Will]]
+
+>>> Updated patch. Moved the specFuncsRef to the front of the arg list. Still haven't thought through the security implications of
+>>> having it in `%params`. I've also removed all the debugging `print` statements. And I've updated the `is_globlist()` function.
+>>> I think this is ready for people other than me to have a play. It is not well enough tested to commit just yet.
+>>> -- [[Will]]
+
+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
+
+>> Good :)
+
+> * 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?
+
+>> Because you have to define all the named pagespecs in the pagespec, you sometimes end up with very long pagespecs. I found it useful to split them over multiple lines. That didn't work at one point and I added the 's' to make it work. I may have further altered the regex since then to make the 's' redundant. Remove it and see if multi-line pagespecs still work. :)
+
+>>> Well, I can tell you that multi-line pagespecs are supported w/o
+>>> your patch .. I use them all the time. The reason I find your
+>>> use of `/s` unlikely is because without it `\s` already matches
+>>> a newline. Only if you want to treat a newline as non-whitespace
+>>> is `/s` typically necessary. --[[Joey]]
+
+> * 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}`.
+
+>> I'm not a perl hacker. This was a mighty battle for me to get going.
+>> There is probably some battlefield carnage from my early struggles
+>> learning perl left here. Part of this is that @_ / @params already
+>> existed as a way of passing in extra parameters. I didn't want to
+>> pollute that top level namespace - just at my own parameter (a hash)
+>> which contained the data I needed.
+
+>>> I think I understand how the various `%params`
+>>> (there's not just one) work in your code now, but it's really a mess.
+>>> Explaining it in words would take pages.. It could be fixed by,
+>>> in `pagespec_makeperl` something like:
+>>>
+>>> my %specFuncs;
+>>> push @_, specFuncs => \%specFuncs;
+>>>
+>>> With that you have the hash locally available for populating
+>>> inside `pagespec_makeperl`, and when the `match_*` functions
+>>> are called the same hash data will be available inside their
+>>> `@_` or `%params`. No need to change how the functions are called
+>>> or do any of the other hacks.
+>>>
+>>> Currently, specFuncs is populated by building up code
+>>> that recursively calls `pagespec_makeperl`, and is then
+>>> evaluated when the pagespec gets evaluated. My suggested
+>>> change to `%params` will break that, but that had to change
+>>> anyway.
+>>>
+>>> It probably has a security hole, and is certianly inviting
+>>> one, since the pagespec definition is matched by a loose regexp (`.*`)
+>>> and then subject to string interpolation before being evaluated
+>>> inside perl code. I recently changed ikiwiki to never interpolate
+>>> user-supplied strings when translating pagespecs, and that
+>>> needs to happen here too. The obvious way, it seems to me,
+>>> is to not generate perl code, but just directly run perl code that
+>>> populates specFuncs.
+
+> * 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.
+
+>> Yeah - I wanted to make named specs syntactically different on my first pass. You are right in that this could be made a fallback - named specs always override pagenames.
+
+> * The changes to `match_link` seem either unecessary, or incomplete.
+> Shouldn't it check for named specs and call
+> `check_named_spec_existential`?
+
+>> An earlier version did. Then I realised it wasn't actually needed in that case - match_link() already included a loop that was like a type of existential matching. Each time through the loop it would
+>> call match_glob(). match_glob() in turn will handle the named spec. I tested this version briefly and it seemed to work. I remember looking at this again later and wondering if I had mis-understood
+>> some of the logic in match_link(), which might mean there are cases where you would need an explicit call to check_named_spec_existential() - I never checked it properly after having that thought.
+
+>>> In the common case, `match_link` does not call `match_glob`,
+>>> because the link target it is being asked to check for is a single
+>>> page name, not a glob.
+
+> * 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.)
+
+>> Possibly. I'm not sure which I prefer between the current solution and that one. Each have advantages and disadvantages.
+>> It really isn't much code for the match functions to add a call to check_named_spec_existential().
+
+>>> But if a plugin adds its own match function, it has
+>>> to explicitly call that code to support named pagespecs.
+
+> * 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..
+
+>> It worked for me. :)
+
+> * I also need to verify if memoizing the named pagespecs has
+> really guarded against very expensive pagespecs DOSing the wiki..
+
+> --[[Joey]]
+
+>> There is one issue that I've been thinking about that I haven't raised anywhere (or checked myself), and that is how this all interacts with page dependencies.
+>> Firstly, I'm not sure anymore that the `pagespec_merge` function will continue to work in all cases.
+
+>>> The problem I can see there is that if two pagespecs
+>>> get merged and both use `~foo` but define it differently,
+>>> then the second definition might be used at a point when
+>>> it shouldn't (but I haven't verified that really happens).
+>>> That could certianly be a show-stopper. --[[Joey]]
+
+>> Secondly, it seems that there are two types of dependency, and ikiwiki
+>> currently only handles one of them. The first type is "Rebuild this
+>> page when any of these other pages changes" - ikiwiki handles this.
+>> The second type is "rebuild this page when set of pages referred to by
+>> this pagespec changes" - ikiwiki doesn't seem to handle this. I
+>> suspect that named pagespecs would make that second type of dependency
+>> more important. I'll try to come up with a good example. -- [[Will]]
+
+>>> Hrm, I was going to build an example of this with backlinks, but it
+>>> looks like that is handled as a special case at the moment (line 458 of
+>>> render.pm). I'll see if I can breapk
+>>> things another way. Fixing this properly would allow removal of that special case. -- [[Will]]
+
+>>>> I can't quite understand the distinction you're trying to draw
+>>>> between the two types of dependencies. Backlinks are a very special
+>>>> case though and I'll be suprised if they fit well into pagespecs.
+>>>> --[[Joey]]
+
----
-diff --git a/IkiWiki.pm b/IkiWiki.pm
-index e476521..07b71d7 100644
---- a/IkiWiki.pm
-+++ b/IkiWiki.pm
-@@ -1524,7 +1524,7 @@ sub globlist_to_pagespec ($) { #{{{
-
- sub is_globlist ($) { #{{{
- my $s=shift;
-- return ( $s =~ /[^\s]+\s+([^\s]+)/ && $1 ne "and" && $1 ne "or" );
-+ return 0; #( $s =~ /[^\s]+\s+([^\s]+)/ && $1 ne "and" && $1 ne "or" );
- } #}}}
-
- sub safequote ($) { #{{{
-@@ -1605,7 +1605,7 @@ sub pagespec_merge ($$) { #{{{
- return "($a) or ($b)";
- } #}}}
-
--sub pagespec_translate ($) { #{{{
-+sub pagespec_makeperl ($) { #{{{
- my $spec=shift;
-
- # Support for old-style GlobLists.
-@@ -1624,9 +1624,11 @@ sub pagespec_translate ($) { #{{{
- |
- \) # )
- |
-- \w+\([^\)]*\) # command(params)
-+ define\(\s*~\w+\s*,((\([^\(\)]*\)) | ([^\(\)]+))+\) # define(~specName, spec) - spec can contain parens 1 deep
-+ |
-+ \w+\([^\(\)]*\) # command(params) - params cannot contain parens
- |
-- [^\s()]+ # any other text
-+ [^\s\(\)]+ # any other text
- )
- \s* # ignore whitespace
- }igx) {
-@@ -1640,16 +1642,23 @@ sub pagespec_translate ($) { #{{{
- elsif ($word eq "(" || $word eq ")" || $word eq "!") {
- $code.=' '.$word;
- }
-+ elsif ($word =~ /^define\(\s*~(\w+)\s*,(.*)\)$/) {
-+ $code .= " (\$specFuncsRef->{$1}=";
-+ #$code .= "memoize(";
-+ $code .= pagespec_makeperl($2);
-+ #$code .= ")";
-+ $code .= ") ";
-+ }
- elsif ($word =~ /^(\w+)\((.*)\)$/) {
- if (exists $IkiWiki::PageSpec::{"match_$1"}) {
-- $code.="IkiWiki::PageSpec::match_$1(\$page, ".safequote($2).", \@_)";
-+ $code.="IkiWiki::PageSpec::match_$1(\$page, \$specFuncsRef, ".safequote($2).", \@_)";
- }
- else {
- $code.=' 0';
- }
- }
- else {
-- $code.=" IkiWiki::PageSpec::match_glob(\$page, ".safequote($word).", \@_)";
-+ $code.=" IkiWiki::PageSpec::match_glob(\$page, \$specFuncsRef, ".safequote($word).", \@_)";
- }
- }
-
-@@ -1657,8 +1666,18 @@ sub pagespec_translate ($) { #{{{
- $code=0;
- }
-
-+ return 'sub { my $page=shift; my $specFuncsRef=shift; '.$code.' }';
-+} #}}}
-+
-+sub pagespec_translate ($) { #{{{
-+ my $spec=shift;
-+
-+ my $code = pagespec_makeperl($spec);
-+
-+ print "Spec '$spec' led to perl '$code'\n";
-+
- no warnings;
-- return eval 'sub { my $page=shift; '.$code.' }';
-+ return eval $code;
- } #}}}
-
- sub pagespec_match ($$;@) { #{{{
-@@ -1673,7 +1692,7 @@ sub pagespec_match ($$;@) { #{{{
-
- my $sub=pagespec_translate($spec);
- return IkiWiki::FailReason->new("syntax error in pagespec \"$spec\"") if $@;
-- return $sub->($page, @params);
-+ return $sub->($page, {}, @params);
- } #}}}
-
- sub pagespec_valid ($) { #{{{
-@@ -1722,13 +1741,77 @@ sub new { #{{{
-
- package IkiWiki::PageSpec;
-
--sub match_glob ($$;@) { #{{{
-+sub check_named_spec($$$;@) {
-+ my $page=shift;
-+ my $specFuncsRef=shift;
-+ my $specName=shift;
-+ my %params=@_;
-+
-+ return IkiWiki::FailReason->new("Named page spec '$specName' is not valid")
-+ unless (substr($specName, 0, 1) eq '~');
-+
-+ $specName = substr($specName, 1);
-+ print "Checking pagespec named $specName against page $page\n";
-+ if (exists $specFuncsRef->{$specName}) {
-+ # remove the named spec from the spec refs
-+ # when we recurse to avoid infinite recursion
-+ my $sub = $specFuncsRef->{$specName};
-+ $specFuncsRef->{$specName} = undef;
-+ my $result = $sub->($page, $specFuncsRef, %params);
-+ $specFuncsRef->{$specName} = $sub;
-+ return $result;
-+ } else {
-+ print "Couldn't find pagespec\n";
-+ return IkiWiki::FailReason->new("Page spec $specName does not exist");
-+ }
-+}
-+
-+sub check_named_spec_existential($$$$;@) {
-+ my $page=shift;
-+ my $specFuncsRef=shift;
-+ my $specName=shift;
-+ my $funcref=shift;
-+ my %params=@_;
-+
-+ return IkiWiki::FailReason->new("Named page spec '$specName' is not valid")
-+ unless (substr($specName, 0, 1) eq '~');
-+ $specName = substr($specName, 1);
-+
-+ print "Checking (existential) pagespec named $specName against page $page\n";
-+
-+ if (exists $specFuncsRef->{$specName}) {
-+ # remove the named spec from the spec refs
-+ # when we recurse to avoid infinite recursion
-+ my $sub = $specFuncsRef->{$specName};
-+ $specFuncsRef->{$specName} = undef;
-+
-+ foreach my $nextpage (keys %IkiWiki::pagesources) {
-+ print "Checking $nextpage against $specName\n";
-+ if ($sub->($nextpage, $specFuncsRef, %params)) {
-+ print "Match! Checking spec $nextpage against function from original page $page\n";
-+ my $tempResult = $funcref->($page, $specFuncsRef, $nextpage, %params);
-+ return $tempResult if ($tempResult);
-+ }
-+ }
-+
-+ $specFuncsRef->{$specName} = $sub;
-+ return IkiWiki::FailReason->new("No page in spec $specName was successfully matched");
-+ } else {
-+ print "Couldn't find pagespec\n";
-+ return IkiWiki::FailReason->new("Page spec $specName does not exist");
-+ }
-+}
-+
-+sub match_glob ($$$;@) { #{{{
- my $page=shift;
-+ my $specFuncsRef=shift;
- my $glob=shift;
- my %params=@_;
-
- my $from=exists $params{location} ? $params{location} : '';
-
-+ print "Matching glob $glob \n";
-+
- # relative matching
- if ($glob =~ m!^\./!) {
- $from=~s#/?[^/]+$##;
-@@ -1736,6 +1819,10 @@ sub match_glob ($$;@) { #{{{
- $glob="$from/$glob" if length $from;
- }
-
-+ if (substr($glob, 0, 1) eq '~') {
-+ return check_named_spec($page, $specFuncsRef, $glob);
-+ }
-+
- my $regexp=IkiWiki::glob2re($glob);
- if ($page=~/^$regexp$/i) {
- if (! IkiWiki::isinternal($page) || $params{internal}) {
-@@ -1750,17 +1837,29 @@ sub match_glob ($$;@) { #{{{
- }
- } #}}}
-
--sub match_internal ($$;@) { #{{{
-- return match_glob($_[0], $_[1], @_, internal => 1)
-+sub match_internal ($$$;@) { #{{{
-+ my $page=shift;
-+ my $specFuncsRef=shift;
-+ my $glob=shift;
-+
-+ return match_glob($page, $specFuncsRef, $glob, @_, internal => 1)
- } #}}}
-
--sub match_link ($$;@) { #{{{
-+sub match_link ($$$;@) { #{{{
- my $page=shift;
-- my $link=lc(shift);
-+ my $specFuncsRef=shift;
-+ my $fulllink=shift;
-+ my $link=lc($fulllink);
- my %params=@_;
-
-+ print "Matching link $fulllink \n";
-+
- my $from=exists $params{location} ? $params{location} : '';
-
-+ if (substr($fulllink, 0, 1) eq '~') {
-+ return check_named_spec_existential($page, $specFuncsRef, $fulllink, \&match_link);
-+ }
-+
- # relative matching
- if ($link =~ m!^\.! && defined $from) {
- $from=~s#/?[^/]+$##;
-@@ -1784,12 +1883,16 @@ sub match_link ($$;@) { #{{{
- return IkiWiki::FailReason->new("$page does not link to $link");
- } #}}}
-
--sub match_backlink ($$;@) { #{{{
-- return match_link($_[1], $_[0], @_);
-+sub match_backlink ($$$;@) { #{{{
-+ my $page=shift;
-+ my $specFuncsRef=shift;
-+ my $backlink=shift;
-+ return match_link($backlink, $specFuncsRef, $page, @_);
- } #}}}
-
--sub match_created_before ($$;@) { #{{{
-+sub match_created_before ($$$;@) { #{{{
- my $page=shift;
-+ my $specFuncsRef=shift;
- my $testpage=shift;
-
- if (exists $IkiWiki::pagectime{$testpage}) {
-@@ -1805,8 +1908,9 @@ sub match_created_before ($$;@) { #{{{
- }
- } #}}}
-
--sub match_created_after ($$;@) { #{{{
-+sub match_created_after ($$$;@) { #{{{
- my $page=shift;
-+ my $specFuncsRef=shift;
- my $testpage=shift;
-
- if (exists $IkiWiki::pagectime{$testpage}) {
-@@ -1822,8 +1926,12 @@ sub match_created_after ($$;@) { #{{{
- }
- } #}}}
-
--sub match_creation_day ($$;@) { #{{{
-- if ((gmtime($IkiWiki::pagectime{shift()}))[3] == shift) {
-+sub match_creation_day ($$$;@) { #{{{
-+ my $page=shift;
-+ shift;
-+ my $time=shift;
-+
-+ if ((gmtime($IkiWiki::pagectime{$page}))[3] == $time) {
- return IkiWiki::SuccessReason->new('creation_day matched');
- }
- else {
-@@ -1831,8 +1939,12 @@ sub match_creation_day ($$;@) { #{{{
- }
- } #}}}
-
--sub match_creation_month ($$;@) { #{{{
-- if ((gmtime($IkiWiki::pagectime{shift()}))[4] + 1 == shift) {
-+sub match_creation_month ($$$;@) { #{{{
-+ my $page=shift;
-+ shift;
-+ my $time=shift;
-+
-+ if ((gmtime($IkiWiki::pagectime{$page}))[4] + 1 == $time) {
- return IkiWiki::SuccessReason->new('creation_month matched');
- }
- else {
-@@ -1840,8 +1952,12 @@ sub match_creation_month ($$;@) { #{{{
- }
- } #}}}
-
--sub match_creation_year ($$;@) { #{{{
-- if ((gmtime($IkiWiki::pagectime{shift()}))[5] + 1900 == shift) {
-+sub match_creation_year ($$$;@) { #{{{
-+ my $page=shift;
-+ shift;
-+ my $time=shift;
-+
-+ if ((gmtime($IkiWiki::pagectime{$page}))[5] + 1900 == $time) {
- return IkiWiki::SuccessReason->new('creation_year matched');
- }
- else {
-diff --git a/IkiWiki/Plugin/attachment.pm b/IkiWiki/Plugin/attachment.pm
-index f1f792a..a410e48 100644
---- a/IkiWiki/Plugin/attachment.pm
-+++ b/IkiWiki/Plugin/attachment.pm
-@@ -291,7 +291,8 @@ sub attachment_list ($) { #{{{
-
- package IkiWiki::PageSpec;
-
--sub match_user ($$;@) { #{{{
-+sub match_user ($$$;@) { #{{{
-+ shift;
- shift;
- my $user=shift;
- my %params=@_;
-@@ -311,7 +312,8 @@ sub match_user ($$;@) { #{{{
- }
- } #}}}
-
--sub match_ip ($$;@) { #{{{
-+sub match_ip ($$$;@) { #{{{
-+ shift;
- shift;
- my $ip=shift;
- my %params=@_;
-diff --git a/IkiWiki/Plugin/conditional.pm b/IkiWiki/Plugin/conditional.pm
-index 7716fce..2110ca0 100644
---- a/IkiWiki/Plugin/conditional.pm
-+++ b/IkiWiki/Plugin/conditional.pm
-@@ -70,7 +70,8 @@ sub preprocess_if (@) { #{{{
-
- package IkiWiki::PageSpec;
-
--sub match_enabled ($$;@) { #{{{
-+sub match_enabled ($$$;@) { #{{{
-+ shift;
- shift;
- my $plugin=shift;
-
-@@ -83,13 +84,14 @@ sub match_enabled ($$;@) { #{{{
- }
- } #}}}
-
--sub match_sourcepage ($$;@) { #{{{
-+sub match_sourcepage ($$$;@) { #{{{
- shift;
-+ my $specFuncsRef=shift;
- my $glob=shift;
- my %params=@_;
-
- return IkiWiki::FailReason->new("cannot match sourcepage") unless exists $params{sourcepage};
-- if (match_glob($params{sourcepage}, $glob, @_)) {
-+ if (match_glob($params{sourcepage}, $specFuncsRef, $glob, @_)) {
- return IkiWiki::SuccessReason->new("sourcepage matches $glob");
- }
- else {
-@@ -97,13 +99,14 @@ sub match_sourcepage ($$;@) { #{{{
- }
- } #}}}
-
--sub match_destpage ($$;@) { #{{{
-+sub match_destpage ($$$;@) { #{{{
- shift;
-+ my $specFuncsRef=shift;
- my $glob=shift;
- my %params=@_;
-
- return IkiWiki::FailReason->new("cannot match destpage") unless exists $params{destpage};
-- if (match_glob($params{destpage}, $glob, @_)) {
-+ if (match_glob($params{destpage}, $specFuncsRef, $glob, @_)) {
- return IkiWiki::SuccessReason->new("destpage matches $glob");
- }
- else {
-@@ -111,7 +114,8 @@ sub match_destpage ($$;@) { #{{{
- }
- } #}}}
-
--sub match_included ($$;@) { #{{{
-+sub match_included ($$$;@) { #{{{
-+ shift;
- shift;
- shift;
- my %params=@_;
-diff --git a/IkiWiki/Plugin/filecheck.pm b/IkiWiki/Plugin/filecheck.pm
-index 6f71be3..bf472c5 100644
---- a/IkiWiki/Plugin/filecheck.pm
-+++ b/IkiWiki/Plugin/filecheck.pm
-@@ -66,8 +66,9 @@ sub humansize ($) { #{{{
-
- package IkiWiki::PageSpec;
-
--sub match_maxsize ($$;@) { #{{{
-+sub match_maxsize ($$$;@) { #{{{
- my $page=shift;
-+ shift;
- my $maxsize=eval{IkiWiki::Plugin::attachment::parsesize(shift)};
- if ($@) {
- return IkiWiki::FailReason->new("unable to parse maxsize (or number too large)");
-@@ -87,8 +88,9 @@ sub match_maxsize ($$;@) { #{{{
- }
- } #}}}
-
--sub match_minsize ($$;@) { #{{{
-+sub match_minsize ($$$;@) { #{{{
- my $page=shift;
-+ shift;
- my $minsize=eval{IkiWiki::Plugin::attachment::parsesize(shift)};
- if ($@) {
- return IkiWiki::FailReason->new("unable to parse minsize (or number too large)");
-@@ -108,8 +110,9 @@ sub match_minsize ($$;@) { #{{{
- }
- } #}}}
-
--sub match_mimetype ($$;@) { #{{{
-+sub match_mimetype ($$$;@) { #{{{
- my $page=shift;
-+ shift;
- my $wanted=shift;
-
- my %params=@_;
-@@ -138,8 +141,9 @@ sub match_mimetype ($$;@) { #{{{
- }
- } #}}}
-
--sub match_virusfree ($$;@) { #{{{
-+sub match_virusfree ($$$;@) { #{{{
- my $page=shift;
-+ shift;
- my $wanted=shift;
-
- my %params=@_;
-@@ -180,7 +184,7 @@ sub match_virusfree ($$;@) { #{{{
- }
- } #}}}
-
--sub match_ispage ($$;@) { #{{{
-+sub match_ispage ($$$;@) { #{{{
- my $filename=shift;
-
- if (defined IkiWiki::pagetype($filename)) {
-diff --git a/IkiWiki/Plugin/meta.pm b/IkiWiki/Plugin/meta.pm
-index b2c85c8..1ee6a69 100644
---- a/IkiWiki/Plugin/meta.pm
-+++ b/IkiWiki/Plugin/meta.pm
-@@ -264,6 +264,7 @@ sub pagetemplate (@) { #{{{
- sub match { #{{{
- my $field=shift;
- my $page=shift;
-+ shift;
-
- # turn glob into a safe regexp
- my $re=IkiWiki::glob2re(shift);
-@@ -291,23 +292,23 @@ sub match { #{{{
-
- package IkiWiki::PageSpec;
-
--sub match_title ($$;@) { #{{{
-+sub match_title ($$$;@) { #{{{
- IkiWiki::Plugin::meta::match("title", @_);
- } #}}}
-
--sub match_author ($$;@) { #{{{
-+sub match_author ($$$;@) { #{{{
- IkiWiki::Plugin::meta::match("author", @_);
- } #}}}
-
--sub match_authorurl ($$;@) { #{{{
-+sub match_authorurl ($$$;@) { #{{{
- IkiWiki::Plugin::meta::match("authorurl", @_);
- } #}}}
-
--sub match_license ($$;@) { #{{{
-+sub match_license ($$$;@) { #{{{
- IkiWiki::Plugin::meta::match("license", @_);
- } #}}}
-
--sub match_copyright ($$;@) { #{{{
-+sub match_copyright ($$$;@) { #{{{
- IkiWiki::Plugin::meta::match("copyright", @_);
- } #}}}
-
+ 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 ($) {
+
+ sub is_globlist ($) {
+ my $s=shift;
+ - return ( $s =~ /[^\s]+\s+([^\s]+)/ && $1 ne "and" && $1 ne "or" );
+ + return ! ($s =~ /
+ + (^\s*
+ + [^\s(]+ # single item
+ + (\( # possibly with parens after it
+ + ([^)]* # with stuff inside those parens
+ + (\([^)]*\))*)* # maybe even nested parens
+ + \))?\s*$
+ + ) |
+ + (\s and \s) | (\s or \s) # or we find 'and' or 'or' somewhere
+ + /xs);
+ }
+
+ sub safequote ($) {
+ @@ -1631,7 +1640,7 @@ sub pagespec_merge ($$) {
+ return "($a) or ($b)";
+ }
+
+ -sub pagespec_translate ($) {
+ +sub pagespec_makeperl ($) {
+ my $spec=shift;
+
+ # Support for old-style GlobLists.
+ @@ -1650,12 +1659,14 @@ sub pagespec_translate ($) {
+ |
+ \) # )
+ |
+ - \w+\([^\)]*\) # command(params)
+ + define\(\s*~\w+\s*,((\([^()]*\)) | ([^()]+))+\) # define(~specName, spec) - spec can contain parens 1 deep
+ + |
+ + \w+\([^()]*\) # command(params) - params cannot contain parens
+ |
+ [^\s()]+ # any other text
+ )
+ \s* # ignore whitespace
+ - }igx) {
+ + }igxs) {
+ my $word=$1;
+ if (lc $word eq 'and') {
+ $code.=' &&';
+ @@ -1666,16 +1677,23 @@ sub pagespec_translate ($) {
+ elsif ($word eq "(" || $word eq ")" || $word eq "!") {
+ $code.=' '.$word;
+ }
+ - elsif ($word =~ /^(\w+)\((.*)\)$/) {
+ + elsif ($word =~ /^define\(\s*~(\w+)\s*,(.*)\)$/s) {
+ + $code .= " (\$params{specFuncs}->{$1}="; # (exists \$params{specFuncs}) &&
+ + $code .= "memoize(";
+ + $code .= &pagespec_makeperl($2);
+ + $code .= ")";
+ + $code .= ") ";
+ + }
+ + elsif ($word =~ /^(\w+)\((.*)\)$/s) {
+ if (exists $IkiWiki::PageSpec::{"match_$1"}) {
+ - $code.="IkiWiki::PageSpec::match_$1(\$page, ".safequote($2).", \@_)";
+ + $code.="IkiWiki::PageSpec::match_$1(\$page, ".safequote($2).", \%params)";
+ }
+ else {
+ $code.=' 0';
+ }
+ }
+ else {
+ - $code.=" IkiWiki::PageSpec::match_glob(\$page, ".safequote($word).", \@_)";
+ + $code.=" IkiWiki::PageSpec::match_glob(\$page, ".safequote($word).", \%params)";
+ }
+ }
+
+ @@ -1683,8 +1701,18 @@ sub pagespec_translate ($) {
+ $code=0;
+ }
+
+ + return 'sub { my $page=shift; my %params = @_; '.$code.' }';
+ +}
+ +
+ +sub pagespec_translate ($) {
+ + my $spec=shift;
+ +
+ + my $code = pagespec_makeperl($spec);
+ +
+ + # print STDERR "Spec '$spec' generated code '$code'\n";
+ +
+ no warnings;
+ - return eval 'sub { my $page=shift; '.$code.' }';
+ + return eval $code;
+ }
+
+ 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 {
+
+ package IkiWiki::PageSpec;
+
+ +sub check_named_spec($$;@) {
+ + my $page=shift;
+ + my $specName=shift;
+ + my %params=@_;
+ +
+ + error("Unable to find specFuncs in params to check_named_spec()!") unless exists $params{specFuncs};
+ +
+ + my $specFuncsRef=$params{specFuncs};
+ +
+ + return IkiWiki::FailReason->new("Named page spec '$specName' is not valid")
+ + unless (substr($specName, 0, 1) eq '~');
+ +
+ + $specName = substr($specName, 1);
+ +
+ + if (exists $specFuncsRef->{$specName}) {
+ + # remove the named spec from the spec refs
+ + # when we recurse to avoid infinite recursion
+ + my $sub = $specFuncsRef->{$specName};
+ + delete $specFuncsRef->{$specName};
+ + my $result = $sub->($page, %params);
+ + $specFuncsRef->{$specName} = $sub;
+ + return $result;
+ + } else {
+ + return IkiWiki::FailReason->new("Page spec '$specName' does not exist");
+ + }
+ +}
+ +
+ +sub check_named_spec_existential($$$;@) {
+ + my $page=shift;
+ + my $specName=shift;
+ + my $funcref=shift;
+ + my %params=@_;
+ +
+ + error("Unable to find specFuncs in params to check_named_spec_existential()!") unless exists $params{specFuncs};
+ + my $specFuncsRef=$params{specFuncs};
+ +
+ + return IkiWiki::FailReason->new("Named page spec '$specName' is not valid")
+ + unless (substr($specName, 0, 1) eq '~');
+ + $specName = substr($specName, 1);
+ +
+ + if (exists $specFuncsRef->{$specName}) {
+ + # remove the named spec from the spec refs
+ + # when we recurse to avoid infinite recursion
+ + my $sub = $specFuncsRef->{$specName};
+ + delete $specFuncsRef->{$specName};
+ +
+ + foreach my $nextpage (keys %IkiWiki::pagesources) {
+ + if ($sub->($nextpage, %params)) {
+ + my $tempResult = $funcref->($page, $nextpage, %params);
+ + if ($tempResult) {
+ + $specFuncsRef->{$specName} = $sub;
+ + return $tempResult;
+ + }
+ + }
+ + }
+ +
+ + $specFuncsRef->{$specName} = $sub;
+ + return IkiWiki::FailReason->new("No page in spec '$specName' was successfully matched");
+ + } else {
+ + return IkiWiki::FailReason->new("Named page spec '$specName' does not exist");
+ + }
+ +}
+ +
+ sub match_glob ($$;@) {
+ my $page=shift;
+ my $glob=shift;
+ my %params=@_;
+
+ + if (substr($glob, 0, 1) eq '~') {
+ + return check_named_spec($page, $glob, %params);
+ + }
+ +
+ my $from=exists $params{location} ? $params{location} : '';
+
+ # relative matching
+ @@ -1782,11 +1877,12 @@ sub match_internal ($$;@) {
+
+ sub match_link ($$;@) {
+ my $page=shift;
+ - my $link=lc(shift);
+ + my $fulllink=shift;
+ my %params=@_;
+ + my $link=lc($fulllink);
+
+ my $from=exists $params{location} ? $params{location} : '';
+ -
+ +
+ # relative matching
+ if ($link =~ m!^\.! && defined $from) {
+ $from=~s#/?[^/]+$##;
+ @@ -1804,19 +1900,32 @@ sub match_link ($$;@) {
+ }
+ else {
+ return IkiWiki::SuccessReason->new("$page links to page $p matching $link")
+ - if match_glob($p, $link, %params);
+ + if match_glob($p, $fulllink, %params);
+ }
+ }
+ return IkiWiki::FailReason->new("$page does not link to $link");
+ }
+
+ sub match_backlink ($$;@) {
+ - return match_link($_[1], $_[0], @_);
+ + my $page=shift;
+ + my $backlink=shift;
+ + my @params=@_;
+ +
+ + if (substr($backlink, 0, 1) eq '~') {
+ + return check_named_spec_existential($page, $backlink, \&match_backlink, @params);
+ + }
+ +
+ + return match_link($backlink, $page, @params);
+ }
+
+ sub match_created_before ($$;@) {
+ my $page=shift;
+ my $testpage=shift;
+ + my @params=@_;
+ +
+ + if (substr($testpage, 0, 1) eq '~') {
+ + return check_named_spec_existential($page, $testpage, \&match_created_before, @params);
+ + }
+
+ if (exists $IkiWiki::pagectime{$testpage}) {
+ if ($IkiWiki::pagectime{$page} < $IkiWiki::pagectime{$testpage}) {
+ @@ -1834,6 +1943,11 @@ sub match_created_before ($$;@) {
+ sub match_created_after ($$;@) {
+ my $page=shift;
+ my $testpage=shift;
+ + my @params=@_;
+ +
+ + if (substr($testpage, 0, 1) eq '~') {
+ + return check_named_spec_existential($page, $testpage, \&match_created_after, @params);
+ + }
+
+ if (exists $IkiWiki::pagectime{$testpage}) {
+ if ($IkiWiki::pagectime{$page} > $IkiWiki::pagectime{$testpage}) {
sipb-www / ikiwiki.git / blobdiff