run_hooks(refresh => sub { shift->() });
my ($files, $exists)=find_src_files();
- my (%rendered, @add, @del, @internal);
+ my (%rendered, @add, @del, @internal, @internal_change);
+
# check for added or removed pages
foreach my $file (@$files) {
my $page=pagename($file);
$stat[9] > $pagemtime{$page} ||
$forcerebuild{$page}) {
$pagemtime{$page}=$stat[9];
+
if (isinternal($page)) {
- push @internal, $file;
# Preprocess internal page in scan-only mode.
preprocess($page, $page, readfile($srcfile), 1);
+ push @internal_change, $file;
}
else {
push @needsbuild, $file;
}
run_hooks(needsbuild => sub { shift->(\@needsbuild) });
- # scan and render files
+ # before scanning, make a note of where pages'
+ # old links pointed
+ my %oldlink_targets;
+ foreach my $file (@needsbuild, @del) {
+ my $page=pagename($file);
+ if (exists $oldlinks{$page}) {
+ foreach my $l (@{$oldlinks{$page}}) {
+ $oldlink_targets{$page}{$l}=bestlink($page, $l);
+ }
+ }
+ }
+
+ # scan and render changed files
foreach my $file (@needsbuild) {
debug(sprintf(gettext("scanning %s"), $file));
scan($file);
render($file);
$rendered{$file}=1;
}
- foreach my $file (@internal) {
+ foreach my $file (@internal, @internal_change) {
# internal pages are not rendered
my $page=pagename($file);
delete $depends{$page};
}
}
}
-
- if (%rendered || @del || @internal) {
- my @changed;
- my $changes;
- do {
- $changes=0;
- @changed=(keys %rendered, @del);
- my %lcchanged = map { lc(pagename($_)) => 1 } @changed;
-
- # rebuild dependant pages
- foreach my $f (@$files) {
- next if $rendered{$f};
- my $p=pagename($f);
- my $reason = undef;
- if (exists $depends_simple{$p}) {
- foreach my $d (keys %{$depends_simple{$p}}) {
- if (exists $lcchanged{$d}) {
- $reason = $d;
- last;
- }
- }
+ # determine which links, on what pages, have changed
+ my %backlinkchanged;
+ my %linkchangers;
+ foreach my $file (@needsbuild, @del) {
+ my $page=pagename($file);
+ my %link_targets;
+ if (exists $links{$page}) {
+ foreach my $l (@{$links{$page}}) {
+ my $target=bestlink($page, $l);
+ if (! exists $oldlink_targets{$page}{$l} ||
+ $target ne $oldlink_targets{$page}{$l}) {
+ $backlinkchanged{$l}=1;
+ $linkchangers{lc($page)}=1;
}
+ delete $oldlink_targets{$page}{$l};
+ }
+ }
+ if (exists $oldlink_targets{$page} &&
+ %{$oldlink_targets{$page}}) {
+ foreach my $target (keys %{$oldlink_targets{$page}}) {
+ $backlinkchanged{$target}=1;
+ }
+ $linkchangers{lc($page)}=1;
+ }
+ }
+ %oldlink_targets=();
+
+ # rebuild dependant pages, recursively
+ my $deps=(@needsbuild || @del || @internal || @internal_change);
+ do {
+ $deps=0;
+ my @changed=(keys %rendered, @del);
+ my @exists_changed=(@add, @del);
- if (exists $depends{$p} && ! defined $reason) {
- D: foreach my $d (keys %{$depends{$p}}) {
- my $sub=pagespec_translate($d);
- next if $@ || ! defined $sub;
+ my %lc_changed = map { lc(pagename($_)) => 1 } @changed;
+ my %lc_exists_changed = map { lc(pagename($_)) => 1 } @exists_changed;
+
+ foreach my $f (@$files) {
+ next if $rendered{$f};
+ my $p=pagename($f);
+ my $reason = undef;
- # only consider internal files
- # if the page explicitly depends
- # on such files
- foreach my $file (@changed, $d =~ /internal\(/ ? @internal : ()) {
- next if $file eq $f;
- my $page=pagename($file);
- if ($sub->($page, location => $p)) {
- $reason = $page;
- last D;
- }
- }
+ if (exists $depends_simple{$p}) {
+ foreach my $d (keys %{$depends_simple{$p}}) {
+ if (($depends_simple{$p}{$d} & $IkiWiki::DEPEND_CONTENT &&
+ $lc_changed{$d})
+ ||
+ ($depends_simple{$p}{$d} & $IkiWiki::DEPEND_PRESENCE &&
+ $lc_exists_changed{$d})
+ ||
+ ($depends_simple{$p}{$d} & $IkiWiki::DEPEND_LINKS &&
+ $linkchangers{$d})
+ ) {
+ $reason = $d;
+ last;
}
}
-
- if (defined $reason) {
- debug(sprintf(gettext("building %s, which depends on %s"), $f, $reason));
- render($f);
- $rendered{$f}=1;
- $changes++;
- last;
- }
}
- } while $changes;
-
- # handle backlinks; if a page has added/removed links,
- # update the pages it links to
- my %linkchanged;
- foreach my $file (@changed) {
- my $page=pagename($file);
-
- if (exists $links{$page}) {
- foreach my $link (map { bestlink($page, $_) } @{$links{$page}}) {
- if (length $link &&
- (! exists $oldlinks{$page} ||
- ! grep { bestlink($page, $_) eq $link } @{$oldlinks{$page}})) {
- $linkchanged{$link}=1;
+
+ if (exists $depends{$p} && ! defined $reason) {
+ D: foreach my $d (keys %{$depends{$p}}) {
+ my $sub=pagespec_translate($d);
+ next if $@ || ! defined $sub;
+
+ # only consider internal files
+ # if the page explicitly depends
+ # on such files
+ my $internal_dep=$d =~ /internal\(/;
+
+ my @candidates;
+ if ($depends{$p}{$d} & $IkiWiki::DEPEND_PRESENCE) {
+ @candidates=@exists_changed;
+ push @candidates, @internal
+ if $internal_dep;
}
- }
- }
- if (exists $oldlinks{$page}) {
- foreach my $link (map { bestlink($page, $_) } @{$oldlinks{$page}}) {
- if (length $link &&
- (! exists $links{$page} ||
- ! grep { bestlink($page, $_) eq $link } @{$links{$page}})) {
- $linkchanged{$link}=1;
+ if (($depends{$p}{$d} & ($IkiWiki::DEPEND_CONTENT | $IkiWiki::DEPEND_LINKS))) {
+ @candidates=@changed;
+ push @candidates, @internal, @internal_change
+ if $internal_dep;
+ }
+
+ foreach my $file (@candidates) {
+ next if $file eq $f;
+ my $page=pagename($file);
+ if ($sub->($page, location => $p)) {
+ if ($depends{$p}{$d} & $IkiWiki::DEPEND_LINKS) {
+ next unless $linkchangers{lc($page)};
+ }
+ $reason = $page;
+ last D;
+ }
}
}
}
- }
-
- foreach my $link (keys %linkchanged) {
- my $linkfile=$pagesources{$link};
- if (defined $linkfile) {
- next if $rendered{$linkfile};
- debug(sprintf(gettext("building %s, to update its backlinks"), $linkfile));
- render($linkfile);
- $rendered{$linkfile}=1;
+
+ if (defined $reason) {
+ debug(sprintf(gettext("building %s, which depends on %s"), $f, $reason));
+ render($f);
+ $rendered{$f}=1;
+ $deps=1;
+ last;
}
}
+ } while $deps;
+
+ # update backlinks
+ foreach my $link (keys %backlinkchanged) {
+ my $linkfile=$pagesources{$link};
+ if (defined $linkfile) {
+ next if $rendered{$linkfile};
+ debug(sprintf(gettext("building %s, to update its backlinks"), $linkfile));
+ render($linkfile);
+ $rendered{$linkfile}=1;
+ }
}
# remove no longer rendered files