157 lines
3.9 KiB
Perl
157 lines
3.9 KiB
Perl
#!/usr/bin/perl
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# Ikiwiki enhanced image handling plugin
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# Christian Mock cm@tahina.priv.at 20061002
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package IkiWiki::Plugin::img;
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use warnings;
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use strict;
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use IkiWiki 3.00;
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my %imgdefaults;
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sub import {
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hook(type => "getsetup", id => "img", call => \&getsetup);
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hook(type => "preprocess", id => "img", call => \&preprocess, scan => 1);
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}
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sub getsetup () {
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return
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plugin => {
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safe => 1,
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rebuild => undef,
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},
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}
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sub preprocess (@) {
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my ($image) = $_[0] =~ /$config{wiki_file_regexp}/; # untaint
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my %params=@_;
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if (exists $imgdefaults{$params{page}}) {
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foreach my $key (keys %{$imgdefaults{$params{page}}}) {
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if (! exists $params{$key}) {
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$params{$key}=$imgdefaults{$params{page}}->{$key};
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}
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}
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}
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if (! exists $params{size}) {
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$params{size}='full';
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}
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if ($image eq 'defaults') {
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$imgdefaults{$params{page}} = \%params;
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return '';
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}
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add_link($params{page}, $image);
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# optimisation: detect scan mode, and avoid generating the image
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if (! defined wantarray) {
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return;
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}
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my $file = bestlink($params{page}, $image);
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my $srcfile = srcfile($file, 1);
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if (! length $file || ! defined $srcfile) {
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return htmllink($params{page}, $params{destpage}, $image);
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}
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my $dir = $params{page};
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my $base = IkiWiki::basename($file);
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eval q{use Image::Magick};
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error gettext("Image::Magick is not installed") if $@;
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my $im = Image::Magick->new;
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my $imglink;
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my $r;
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if ($params{size} ne 'full') {
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add_depends($params{page}, $image);
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my ($w, $h) = ($params{size} =~ /^(\d*)x(\d*)$/);
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error sprintf(gettext('wrong size format "%s" (should be WxH)'), $params{size})
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unless (defined $w && defined $h &&
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(length $w || length $h));
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my $outfile = "$config{destdir}/$dir/${w}x${h}-$base";
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$imglink = "$dir/${w}x${h}-$base";
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will_render($params{page}, $imglink);
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if (-e $outfile && (-M $srcfile >= -M $outfile)) {
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$r = $im->Read($outfile);
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error sprintf(gettext("failed to read %s: %s"), $outfile, $r) if $r;
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}
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else {
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$r = $im->Read($srcfile);
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error sprintf(gettext("failed to read %s: %s"), $file, $r) if $r;
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$r = $im->Resize(geometry => "${w}x${h}");
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error sprintf(gettext("failed to resize: %s"), $r) if $r;
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# don't actually write file in preview mode
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if (! $params{preview}) {
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my @blob = $im->ImageToBlob();
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writefile($imglink, $config{destdir}, $blob[0], 1);
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}
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else {
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$imglink = $file;
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}
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}
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}
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else {
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$r = $im->Read($srcfile);
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error sprintf(gettext("failed to read %s: %s"), $file, $r) if $r;
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$imglink = $file;
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}
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my ($fileurl, $imgurl);
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if (! $params{preview}) {
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$fileurl=urlto($file, $params{destpage});
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$imgurl=urlto($imglink, $params{destpage});
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}
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else {
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$fileurl="$config{url}/$file";
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$imgurl="$config{url}/$imglink";
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}
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if (! defined($im->Get("width")) || ! defined($im->Get("height"))) {
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error sprintf(gettext("failed to determine size of image %s"), $file)
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}
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my $imgtag='<img src="'.$imgurl.
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'" width="'.$im->Get("width").
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'" height="'.$im->Get("height").'"'.
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(exists $params{alt} ? ' alt="'.$params{alt}.'"' : '').
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(exists $params{title} ? ' title="'.$params{title}.'"' : '').
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(exists $params{align} ? ' align="'.$params{align}.'"' : '').
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(exists $params{class} ? ' class="'.$params{class}.'"' : '').
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(exists $params{id} ? ' id="'.$params{id}.'"' : '').
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' />';
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if (! defined $params{link} || lc($params{link}) eq 'yes') {
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$imgtag='<a href="'.$fileurl.'">'.$imgtag.'</a>';
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}
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elsif ($params{link} =~ /^\w+:\/\//) {
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$imgtag='<a href="'.$params{link}.'">'.$imgtag.'</a>';
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}
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elsif (length bestlink($params{page}, $params{link})) {
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add_depends($params{page}, $params{link});
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$imgtag=htmllink($params{page}, $params{destpage},
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$params{link}, linktext => $imgtag,
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noimageinline => 1);
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}
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if (exists $params{caption}) {
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return '<table class="img">'.
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'<caption>'.$params{caption}.'</caption>'.
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'<tr><td>'.$imgtag.'</td></tr>'.
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'</table>';
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}
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else {
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return $imgtag;
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}
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}
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1
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