master
parent
786492c29f
commit
07db39a9d0
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@ -33,3 +33,109 @@ draw(E_--pD, dashed);
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"""]]
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This plugin uses the [[!cpan Digest::SHA]] perl module.
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The full source code is:
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#! /usr/bin/perl
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package IkiWiki::Plugin::asymptote;
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use warnings;
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use strict;
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use Digest::MD5 qw(md5_hex);
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use File::Temp qw(tempdir);
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use HTML::Entities;
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use Encode;
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use IkiWiki 3.00;
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sub import {
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hook(type => "getsetup", id => "asymptote", call => \&getsetup);
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hook(type => "preprocess", id => "asymptote", call => \&preprocess);
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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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section => "widget",
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},
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}
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sub preprocess (@) {
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my %params = @_;
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my $code = $params{src};
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if (! defined $code && ! length $code) {
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error gettext("missing src attribute");
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}
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return create($code, \%params);
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}
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sub create ($$$) {
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# This function calls the image generating function and returns
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# the <img .. /> for the generated image.
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my $code = shift;
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my $params = shift;
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my $digest = md5_hex(Encode::encode_utf8($code));
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my $imglink= $params->{page} . "/$digest.png";
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my $imglog = $params->{page} . "/$digest.log";
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will_render($params->{page}, $imglink);
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will_render($params->{page}, $imglog);
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my $imgurl=urlto($imglink, $params->{destpage});
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my $logurl=urlto($imglog, $params->{destpage});
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if (-e "$config{destdir}/$imglink" ||
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gen_image($code, $digest, $params->{page})) {
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return qq{<img src="$imgurl}
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.(exists $params->{alt} ? qq{" alt="} . $params->{alt} : qq{})
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.qq{" class="asymptote" />};
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}
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else {
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error qq{<a href="$logurl">}.gettext("failed to generate image from code")."</a>";
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}
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}
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sub gen_image ($$$$) {
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# Actually creates the image.
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my $code = shift;
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my $digest = shift;
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my $imagedir = shift;
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my $tmp = eval { create_tmp_dir($digest) };
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if (! $@ &&
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writefile("$digest.asy", $tmp, $code) &&
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writefile("$imagedir/$digest.png", $config{destdir}, "") &&
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system("asy -render=2 -offscreen -f png -o $config{destdir}/$imagedir/$digest.png $tmp/$digest.asy &>$tmp/$digest.log") == 0
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) {
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return 1;
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}
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else {
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# store failure log
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my $log="";
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{
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if (open(my $f, '<', "$tmp/$digest.log")) {
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local $/=undef;
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$log = <$f>;
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close($f);
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}
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}
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writefile("$digest.log", "$config{destdir}/$imagedir", $log);
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return 0;
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}
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}
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sub create_tmp_dir ($) {
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# Create a temp directory, it will be removed when ikiwiki exits.
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my $base = shift;
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my $template = $base.".XXXXXXXXXX";
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my $tmpdir = tempdir($template, TMPDIR => 1, CLEANUP => 1);
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return $tmpdir;
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}
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1
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