diff options
Diffstat (limited to '.ikiwiki/IkiWiki')
| -rwxr-xr-x | .ikiwiki/IkiWiki/Plugin/pandoc.pm | 658 |
1 files changed, 555 insertions, 103 deletions
diff --git a/.ikiwiki/IkiWiki/Plugin/pandoc.pm b/.ikiwiki/IkiWiki/Plugin/pandoc.pm index ddc5299..cbc9cb7 100755 --- a/.ikiwiki/IkiWiki/Plugin/pandoc.pm +++ b/.ikiwiki/IkiWiki/Plugin/pandoc.pm @@ -7,8 +7,20 @@ use strict; use IkiWiki; use FileHandle; use IPC::Open2; +use File::Path qw/make_path/; use JSON; +# activate with 'generate_$format' in meta; turn on all with 'generate_all_formats'. +my %extra_formats = ( + pdf => { ext=>'pdf', label=>'PDF', format=>'latex', extra=>[], order=>1 }, + docx => { ext=>'docx', label=>'DOCX', format=>'docx', extra=>[], order=>2 }, + odt => { ext=>'odt', label=>'ODT', format=>'odt', extra=>[], order=>3 }, + beamer => { ext=>'beamer.pdf', label=>'Beamer', format=>'beamer', extra=>[], order=>4 }, + revealjs => { ext=>'revealjs.html', label=>'RevealJS', format=>'revealjs', extra=>['--self-contained'], order=>5 }, + epub => { ext=>'epub', label=>'EPUB', format=>'epub3', extra=>[], order=>6 }, + latex => { ext=>'tex', label=>'LaTeX', format=>'latex', extra=>['--standalone'], order=>7 }, +); + sub import { my $markdown_ext = $config{pandoc_markdown_ext} || "mdwn"; @@ -18,6 +30,9 @@ sub import { } hook(type => "getsetup", id => "pandoc", call => \&getsetup); + hook(type => "pagetemplate", id => "pandoc", call => \&pagetemplate); + hook(type => "pageactions", id => "pandoc", call => \&pageactions); + if (ref $markdown_ext eq 'ARRAY') { foreach my $mde (@$markdown_ext) { hook(type => 'htmlize', id => $mde, @@ -43,6 +58,14 @@ sub import { hook(type => "htmlize", id => "mediawiki", call => sub { htmlize("mediawiki", @_) }); } + if ($config{pandoc_opml}) { + hook(type => "htmlize", id => "opml", + call => sub { htmlize("opml", @_) }); + } + if ($config{pandoc_org}) { + hook(type => "htmlize", id => "org", + call => sub { htmlize("org", @_) }); + } } @@ -56,42 +79,63 @@ sub getsetup () { type => "string", example => "/usr/local/bin/pandoc", description => "Path to pandoc executable", - safe => 0, + safe => 1, + rebuild => 0, + }, + pandoc_citeproc => { + type => "string", + example => "/usr/local/bin/pandoc-citeproc", + description => "Path to pandoc-citeproc executable", + safe => 1, rebuild => 0, }, pandoc_markdown_ext => { type => "string", - example => "mdwn", - description => "File extension for Markdown files", + example => "mdwn,md,markdown", + description => "File extension(s) for Markdown files handled by Pandoc", safe => 1, rebuild => 1, }, pandoc_latex => { type => "boolean", example => 0, - description => "Enable Pandoc processing of LaTeX documents", - safe => 0, + description => "Enable Pandoc processing of LaTeX documents (extension=tex)", + safe => 1, rebuild => 1, }, pandoc_rst => { type => "boolean", example => 0, - description => "Enable Pandoc processing of reStructuredText documents", - safe => 0, + description => "Enable Pandoc processing of reStructuredText documents (extension=rst)", + safe => 1, rebuild => 1, }, pandoc_textile => { type => "boolean", example => 0, - description => "Enable Pandoc processing of Textile documents", - safe => 0, + description => "Enable Pandoc processing of Textile documents (extension=textile)", + safe => 1, rebuild => 1, }, pandoc_mediawiki => { type => "boolean", example => 0, - description => "Enable Pandoc processing of MediaWiki documents", - safe => 0, + description => "Enable Pandoc processing of MediaWiki documents (extension=mediawiki)", + safe => 1, + rebuild => 1, + }, + pandoc_org => { + type => "boolean", + example => 0, + description => "Enable Pandoc processing of Emacs org-mode documents (extension=org)", + safe => 1, + rebuild => 1, + }, + pandoc_opml => { + type => "boolean", + example => 0, + description => "Enable Pandoc processing of OPML documents (extension=opml)", + safe => 1, rebuild => 1, }, pandoc_smart => { @@ -122,6 +166,13 @@ sub getsetup () { safe => 1, rebuild => 1, }, + pandoc_html_extra_options => { + type => "internal", + default => [], + description => "List of extra pandoc options for html", + safe => 0, + rebuild => 0, + }, pandoc_numsect => { type => "boolean", example => 0, @@ -146,24 +197,143 @@ sub getsetup () { pandoc_math => { type => "string", example => "mathjax", - description => "Process TeX math using", - safe => 0, + description => "How to process TeX math (mathjax, katex, mathml, mathjs, latexmathml, asciimathml, mimetex, webtex)", + safe => 1, + rebuild => 1, + }, + pandoc_math_custom_js => { + type => "string", + example => "", + description => "Link to local/custom javascript for math (or to server-side script for mimetex and webtex)", + safe => 1, + rebuild => 1, + }, + pandoc_math_custom_css => { + type => "string", + example => "", + description => "Link to local/custom CSS for math (requires appropriate pandoc_math setting)", + safe => 1, rebuild => 1, }, pandoc_bibliography => { type => "string", example => "", - description => "Path to bibliography file", - safe => 0, + description => "Path to default bibliography file", + safe => 1, rebuild => 1, }, pandoc_csl => { type => "string", example => "", description => "Path to CSL file (for references and bibliography)", - safe => 0, + safe => 1, + rebuild => 1, + }, + pandoc_csl_default_lang => { + type => "string", + example => "", + description => "Default language code (RFC 1766) for citations processing", + safe => 1, rebuild => 1, }, + pandoc_filters => { + type => "string", + example => "", + description => "A comma-separated list of custom pandoc filters", + safe => 1, + rebuild => 1, + }, + pandoc_latex_template => { + type => "string", + example => "", + description => "Path to pandoc template for LaTeX and normal PDF output", + safe => 1, + rebuild => 0, + }, + pandoc_latex_extra_options => { + type => "internal", + default => [], + description => "List of extra pandoc options for LaTeX (and PDF) generation", + safe => 0, + rebuild => 0, + }, + pandoc_beamer_template => { + type => "string", + example => "", + description => "Path to pandoc template for Beamer PDF output", + safe => 1, + rebuild => 0, + }, + pandoc_beamer_extra_options => { + type => "internal", + default => [], + description => "List of extra pandoc options for Beamer PDF generation", + safe => 0, + rebuild => 0, + }, + pandoc_pdf_export_cleanup => { + type => "boolean", + example => "0", + description => "Whether to clean up LaTeX auxiliary files after PDF generation", + safe => 0, + rebuild => 0, + }, + pandoc_revealjs_template => { + type => "string", + example => "", + description => "Path to pandoc template for Reveal.js slides output", + safe => 1, + rebuild => 0, + }, + pandoc_revealjs_extra_options => { + type => "internal", + default => [], + description => "List of extra pandoc options for Reveal.js slides generation", + safe => 0, + rebuild => 0, + }, + pandoc_docx_template => { + type => "string", + example => "", + description => "Path to pandoc template for MS Word (docx) output", + safe => 1, + rebuild => 0, + }, + pandoc_docx_extra_options => { + type => "internal", + default => [], + description => "List of extra pandoc options for DOCX generation", + safe => 0, + rebuild => 0, + }, + pandoc_odt_template => { + type => "string", + example => "", + description => "Path to pandoc template for OpenDocument (odt) output", + safe => 1, + rebuild => 0, + }, + pandoc_odt_extra_options => { + type => "internal", + default => [], + description => "List of extra pandoc options for ODT generation", + safe => 0, + rebuild => 0, + }, + pandoc_epub_template => { + type => "string", + example => "", + description => "Path to pandoc template for EPUB3 output", + safe => 1, + rebuild => 0, + }, + pandoc_epub_extra_options => { + type => "internal", + default => [], + description => "List of extra pandoc options for EPUB3 generation", + safe => 0, + rebuild => 0, + }; } @@ -171,96 +341,88 @@ sub htmlize ($@) { my $format = shift; my %params = @_; my $page = $params{page}; + my $htmlformat = 'html'; local(*PANDOC_IN, *JSON_IN, *JSON_OUT, *PANDOC_OUT); - my @args; + my @args = (); - my $command = $config{pandoc_command} || "/usr/local/bin/pandoc"; + # The default assumes pandoc is in PATH + my $command = $config{pandoc_command} || "pandoc"; if ($config{pandoc_smart}) { push @args, '--smart'; - }; + } if ($config{pandoc_obfuscate}) { push @args, '--email-obfuscation=references'; } else { push @args, '--email-obfuscation=none'; - }; + } if ($config{pandoc_html5}) { - push @args, '--html5'; - }; + $htmlformat = 'html5'; + } if ($config{pandoc_ascii}) { push @args, '--ascii'; - }; + } if ($config{pandoc_numsect}) { push @args, '--number-sections'; - }; + } if ($config{pandoc_sectdiv}) { push @args, '--section-divs'; - }; + } if ($config{pandoc_codeclasses} && ($config{pandoc_codeclasses} ne "")) { push @args, '--indented-code-classes=' . $config{pandoc_codeclasses}; - }; - - if ($config{pandoc_bibliography}) { - push @args, '--bibliography='.$config{pandoc_bibliography}; } - if ($config{pandoc_csl}) { - push @args, '--csl='.$config{pandoc_csl}; - } - - for ($config{pandoc_math}) { - if (/^mathjax$/) { - push @args, '--mathjax=/dev/null'; - } - elsif (/^jsmath$/) { - push @args, '--jsmath'; - } - elsif (/^latexmathml$/) { - push @args, '--latexmathml'; - } - elsif (/^mimetex$/) { - push @args, '--mimetex'; - } - elsif (/^mathtex$/) { - push @args, '--mimetex=/cgi-bin/mathtex.cgi'; + # How to process math. Normally either mathjax or katex. + my %mathconf = map {($_=>"--$_")} qw( + jsmath mathjax latexmathml asciimathml mathml katex mimetex webtex + ); + my %with_urls = qw/mimetex 1 webtex 1/; + my $mathopt = $1 if $config{pandoc_math} && $config{pandoc_math} =~ /(\w+)/; + my $custom_js = $config{pandoc_math_custom_js} || ''; + # cleanup pandoc-prefixed keys from persistent meta + if (ref $pagestate{$page}{meta} eq 'HASH') { + my @delkeys = (); + foreach my $k (%{ $pagestate{$page}{meta} }) { + push @delkeys, $k if $k =~ /^pandoc_/; } - elsif (/^google$/) { - push @args, '--webtex'; - } - elsif (/^mathml$/) { - push @args, '--mathml'; + delete $pagestate{$page}{meta}{$_} for @delkeys; + } + if ($mathopt && $mathconf{$mathopt}) { + if ($with_urls{$mathopt} && $custom_js) { + # In these cases, the 'custom js' is a misnomer: actually a server-side script + push @args, $mathconf{$mathopt} ."=". $custom_js; + } else { + push @args, $mathconf{$mathopt}; } - else { } + $pagestate{$page}{meta}{"pandoc_math"} = $mathopt; + $pagestate{$page}{meta}{"pandoc_math_$mathopt"} = 1; + $pagestate{$page}{meta}{"pandoc_math_custom_js"} = $custom_js if $custom_js; } - # Convert to intermediate JSON format so that the title block # can be parsed out + # We must omit the 'bibliography' parameter here, otherwise the list of + # references will be doubled. my $to_json_pid = open2(*JSON_OUT, *PANDOC_OUT, $command, '-f', $format, '-t', 'json', - @args); - + @args, '--normalize'); error("Unable to open $command") unless $to_json_pid; - # $ENV{"LC_ALL"} = "en_US.UTF-8"; - my $to_html_pid = open2(*PANDOC_IN, *JSON_IN, $command, - '-f', 'json', - '-t', 'html', - @args); - - error("Unable to open $command") unless $to_html_pid; - # Workaround for perl bug (#376329) require Encode; my $content = Encode::encode_utf8($params{content}); + # Protect inline plugin placeholders from being mangled by pandoc: + $content =~ s{<div class="inline" id="(\d+)"></div>} + {::INLINE::PLACEHOLDER::$1::}g; + print PANDOC_OUT $content; close PANDOC_OUT; @@ -269,6 +431,148 @@ sub htmlize ($@) { waitpid $to_json_pid, 0; + # Parse the title block out of the JSON and set the meta values + my $meta = undef; + my $decoded_json = decode_json($json_content); + # The representation of the meta block changed in pandoc version 1.18 + if (ref $decoded_json eq 'HASH' && $decoded_json->{'Meta'}) { + $meta = $decoded_json->{'Meta'} || {}; # post-1.18 version + } elsif (ref $decoded_json eq 'ARRAY') { + $meta = $decoded_json->[0]->{'unMeta'} || {}; # pre-1.18 version + } + unless ($meta) { + warn "WARNING: Unexpected format for meta block. Incompatible version of Pandoc?\n"; + } + + # Get some selected meta attributes, more specifically: + # (title date bibliography csl subtitle abstract summary description + # version lang locale references author [+ num_authors primary_author]), + # as well as some configuration options (generate_*, *_extra_options, *_template). + + my @format_keys = grep { $_ ne 'pdf' } keys %extra_formats; + my %scalar_meta = map { ($_=>undef) } qw( + title date bibliography csl subtitle abstract summary + description version lang locale sortas titlesort tag tags); + $scalar_meta{$_.'_template'} = undef for @format_keys; + my %bool_meta = map { ("generate_$_"=>0) } keys %extra_formats; + my %list_meta = map { ($_=>[]) } qw/author references/; + $list_meta{$_.'_extra_options'} = [] for @format_keys; + my $have_bibl = 0; + foreach my $k (keys %scalar_meta) { + next unless $meta->{$k}; + $scalar_meta{$k} = compile_string($meta->{$k}->{c}); + # NB! Note that this is potentially risky, since pagestate is sticky, and + # we only cleanup the pandoc_* values in {meta}. + $pagestate{$page}{meta}{$k} = $scalar_meta{$k}; + $pagestate{$page}{meta}{"pandoc_$k"} = $pagestate{$page}{meta}{$k}; + } + foreach my $k (keys %bool_meta) { + my $gen_all = $meta->{generate_all_formats} || {}; + next unless $meta->{$k} || $gen_all->{c}; + my $val = $meta->{$k} ? $meta->{$k}->{c} : $gen_all->{c}; + # simplifies matters with JSON::(PP::)Boolean objects + $val = 1 if $val == 1 || $val eq 'true'; + if (ref $val || $val =~ /^\s*(?:off|no|false|0)\s*$/i) { + $bool_meta{$k} = 0; + } else { + $bool_meta{$k} = 1; + $pagestate{$page}{meta}{"pandoc_$k"} = 1; + } + } + foreach my $k (keys %list_meta) { + next unless $meta->{$k}; + $list_meta{$k} = unwrap_c($meta->{$k}); + $list_meta{$k} = [$list_meta{$k}] unless ref $list_meta{$k} eq 'ARRAY'; + $have_bibl = 1 if $k eq 'references'; + $pagestate{$page}{meta}{"pandoc_$k"} = $list_meta{$k}; + } + # Try to add other keys as scalars, with pandoc_ prefix only. + foreach my $k (keys %$meta) { + next if exists $scalar_meta{$k} || exists $list_meta{$k}; + eval { + $pagestate{$page}{meta}{"pandoc_$k"} = compile_string($meta->{$k}->{c}); + }; + } + my $num_authors = scalar @{ $list_meta{author} }; + $scalar_meta{num_authors} = $num_authors; + $pagestate{$page}{meta}{num_authors} = $num_authors; + if ($num_authors) { + $scalar_meta{primary_author} = $list_meta{author}->[0]; + $pagestate{$page}{meta}{author} = join(', ', @{$list_meta{author}}); + $pagestate{$page}{meta}{pandoc_primary_author} = $scalar_meta{primary_author} + } + + # The bibliography may be set in a Meta block in the page or in the .setup file. + # If both are present, the Meta block has precedence. + for my $bibl ($scalar_meta{bibliography}, $config{pandoc_bibliography}) { + if ($bibl) { + $have_bibl = 1; + $pagestate{$page}{meta}{pandoc_bibliography} = $bibl; + push @args, '--bibliography='.$bibl; + last; + } + } + # Similarly for the CSL file... + for my $cslfile ($scalar_meta{csl}, $config{pandoc_csl}) { + if ($cslfile) { + $pagestate{$page}{meta}{pandoc_csl} = $cslfile; + push @args, '--csl='.$cslfile; + last; + } + } + # If a default CSL language is specified, add that to args, + # (unless it is overridden by meta) + unless ($scalar_meta{lang} || $scalar_meta{locale}) { + if ($config{pandoc_csl_default_lang}) { + push @args, "--metadata=lang:".$config{pandoc_csl_default_lang}; + } + } + # Turn on the pandoc-citeproc filter if either global bibliography, + # local bibliography or a 'references' key in Meta is present. + if ($have_bibl) { + my $citeproc = $config{pandoc_citeproc} || 'pandoc-citeproc'; + push @args, "--filter=$citeproc"; + } + + # Other pandoc filters. Note that currently there is no way to + # configure a filter to run before pandoc-citeproc has done its work. + if ($config{pandoc_filters}) { + my @filters = split /\s*,\s*/, $config{pandoc_filters}; + s/^["']//g for @filters; # get rid of enclosing quotes + foreach my $filter (@filters) { + push @args, "--filter=$filter"; + } + } + + # html_extra_options my be set in Meta block in the page or in the .setup + # file. If both are present, the Meta block has precedence, even if it is + # an empty list + my @html_args = @args; + if (ref $meta->{html_extra_options}{c} eq 'ARRAY') { + if (ref unwrap_c($meta->{html_extra_options}{c}) eq 'ARRAY') { + push @html_args, @{unwrap_c($meta->{html_extra_options}{c})}; + } else { + push @html_args, unwrap_c($meta->{html_extra_options}{c}); + } + } elsif (ref $config{'pandoc_html_extra_options'} eq 'ARRAY') { + push @html_args, @{$config{'pandoc_html_extra_options'}}; + } + + my $to_html_pid = open2(*PANDOC_IN, *JSON_IN, $command, + '-f', 'json', + '-t', $htmlformat, + @html_args); + error("Unable to open $command") unless $to_html_pid; + + $pagestate{$page}{pandoc_extra_formats} = {}; + foreach my $ext (keys %extra_formats) { + if ($bool_meta{"generate_$ext"}) { + export_file($page, $ext, $json_content, $command, @args); + } else { + remove_exported_file($page, $ext); + } + } + print JSON_IN $json_content; close JSON_IN; @@ -279,51 +583,199 @@ sub htmlize ($@) { $content = Encode::decode_utf8(join('', @html)); - # Parse the title block out of the JSON and set the meta values - my @perl_content = @{decode_json($json_content)}; - my %header_section = %{$perl_content[0]}; - my @doc_title = @{$header_section{'docTitle'}}; - my @doc_authors = @{$header_section{'docAuthors'}}; - my $num_authors = @doc_authors; - my @primary_author = (); - if ($num_authors gt 0) { - @primary_author = @{$doc_authors[0]}; - } - my @doc_date = @{$header_section{'docDate'}}; - - sub compile_string { - # The uncompiled string is an array of hashes containing words and - # string with the word "Space". - my (@uncompiled_string) = @_; - my $compiled_string = ''; - foreach my $word_or_space(@uncompiled_string) { - if (ref($word_or_space) eq "HASH") { - if ($word_or_space->{"Str"}) { - $compiled_string .= $word_or_space->{"Str"}; - } + # Reinstate placeholders for inline plugin: + $content =~ s{::INLINE::PLACEHOLDER::(\d+)::} + {<div class="inline" id="$1"></div>}g; + + return $content; +} + + +sub pagetemplate (@) { + my %params = @_; + my $page = $params{page}; + my $template = $params{template}; + foreach my $k (keys %{$pagestate{$page}{meta}}) { + next unless $k =~ /^pandoc_/; + $template->param($k => $pagestate{$page}{meta}{$k}); + } +} + +sub pageactions { + my %args = @_; + my $page = $args{page}; + my @links = (); + return unless $pagestate{$page}{pandoc_extra_formats}; + my @exts = sort { + $extra_formats{$a}->{order} <=> $extra_formats{$b}->{order} + } keys %{ $pagestate{$page}{pandoc_extra_formats} }; + foreach my $ext (@exts) { + my $url = $pagestate{$page}{pandoc_extra_formats}{$ext}; + next unless $url; + my $label = $extra_formats{$ext}->{label} || $ext; + push @links, qq[ + <a href="$url" + class="extra-format-link" + title="Download $label version of this page" + target="_blank">$label</a> + ]; + } + return @links; +} + +sub export_file { + my ($page, $ext, $json_content, $command, @args) = @_; + my ($export_path, $export_url) = _export_file_path_and_url($page, $ext); + my $subdir = $1 if $export_path =~ /(.*)\//; + my @extra_args = @{ $extra_formats{$ext}->{extra} }; + my $eopt = $ext eq 'pdf' ? 'latex' : $ext; + # Note that template in meta OVERRIDES template in config, + # while extra_options in meta are ADDED to extra_options in config. + my $template = $pagestate{$page}{meta}{"pandoc_".$eopt."_template"} + || $config{"pandoc_".$eopt."_template"} || ''; + if ($template) { + push @extra_args, ($ext =~ /^(docx|odt)$/ + ? "--reference-$ext=$template" + : "--template=$template"); + } + my $conf_extra = $config{"pandoc_".$eopt."_extra_options"}; + my $conf_extra_custom = $pagestate{$page}{meta}{"pandoc_".$eopt."_extra_options"}; + foreach my $cnf ($conf_extra, $conf_extra_custom) { + if (ref $cnf eq 'ARRAY' && @$cnf) { + push @extra_args, @$cnf; + } + } + my $pdf_cleanup = 0; + if (defined $pagestate{$page}{meta}{"pandoc_pdf_export_cleanup"}) { + $pdf_cleanup = $pagestate{$page}{meta}{"pandoc_pdf_export_cleanup"}; + } elsif ($config{"pandoc_pdf_export_cleanup"}) { + $pdf_cleanup = 1; + } + # If the user has asked for native LaTeX bibliography handling in the + # extra_args for this export format (using --biblatex or --natbib), + # some extra care is needed. Among other things, we need an external + # tool for PDF generation. In this case, $indirect_pdf will be true. + my %maybe_non_citeproc = qw/latex 1 pdf 1 beamer 1/; + my $indirect_pdf = 0; + if ($maybe_non_citeproc{$ext} && grep { /^(?:--biblatex|--natbib)$/ } @extra_args) { + $indirect_pdf = 1 unless $ext eq 'latex'; # both for pdf and beamer + @args = grep { ! /--filter=.*pandoc-citeproc/ } @args; + } + eval { + if ($subdir && !-d $subdir) { + make_path($subdir) or die "Could not make_path $subdir: $!"; + } + my $to_format = $extra_formats{$ext}->{format} || $ext; + my $tmp_export_path = $export_path; + $tmp_export_path =~ s/\.pdf$/.tex/ if $indirect_pdf; + open(EXPORT, "|-", + $command, + '-f' => 'json', + '-t' => $to_format, + '-o' => $tmp_export_path, + @args, @extra_args) or die "Could not open pipe for $ext: $!"; + print EXPORT $json_content; + close EXPORT or die "Could not close pipe for $ext: $!"; + if ($indirect_pdf && $tmp_export_path ne $export_path) { + my @latexmk_args = qw(-quiet -silent); + if (grep { /xelatex/ } @extra_args) { + push @latexmk_args, '-xelatex'; + } elsif (grep { /lualatex/ } @extra_args) { + push @latexmk_args, '-lualatex'; + } else { + push @latexmk_args, '-pdf'; } - else { - $compiled_string .= ' '; + chdir $subdir or die "Could not chdir to $subdir: $!"; + my $plain_fn = $1 if $tmp_export_path =~ /([^\/]+)$/; + $plain_fn =~ s/\.tex//; + system('latexmk', @latexmk_args, $plain_fn) == 0 + or die "Could not run latexmk for pdf generation ($export_path): $!"; + if ($pdf_cleanup) { + system('latexmk', '-c', '-quiet', '-silent', $plain_fn) == 0 + or die "Could not run latexmk for cleanup ($export_path): $!"; + # These files are apparently not cleaned up by latexmk -c. + foreach ('run.xml', 'bbl') { + my $fn = "$subdir/$plain_fn.$_"; + unlink($fn) if -f $fn; + } } } - return $compiled_string; + $pagestate{$page}{pandoc_extra_formats}{$ext} = $export_url; + }; + if ($@) { + warn "EXPORT ERROR FOR $page (format: $ext): $@\n"; } +} - my $title = compile_string @doc_title; - my $author = compile_string @primary_author; - my $date = compile_string @doc_date; - - if ($title) { - $pagestate{$page}{meta}{title} = $title; +sub remove_exported_file { + my ($page, $ext) = @_; + my ($export_path, $export_url) = _export_file_path_and_url($page, $ext); + if (-f $export_path) { + eval { unlink $export_path or die "Could not unlink $export_path: $!" }; + if ($@) { + warn "WARNING: remove_exported_file; page=$page, ext=$ext: $@\n"; + } } - if ($author) { - $pagestate{$page}{meta}{author} = $author; +} + +sub _export_file_path_and_url { + my ($page, $ext) = @_; + # the html file will end up in "$destdir/$page/index.html", + # while e.g. a pdf will be in "$destdir/$page/$page_minus_dirs.pdf". + my $extension = $extra_formats{$ext}->{ext} || $ext; + my $destdir = $config{destdir} || '.'; + my $page_minus_dirs = $1 if $page =~ /([^\/]*)$/; + $page_minus_dirs ||= 'index'; + my $export_path = "$destdir/$page/$page_minus_dirs.$extension"; + my $export_url = $config{url}; + $export_url .= "/" unless $export_url =~ /\/$/; + $export_url .= "$page/$page_minus_dirs.$extension"; + return ($export_path, $export_url); +} + + +## compile_string and unwrap_c are used to make the meta data structures +## easier to work with for perl. + +sub compile_string { + # Partially represents an item from the data structure in meta as a string. + my @uncompiled = @_; + return $uncompiled[0] if @uncompiled==1 && !ref($uncompiled[0]); + @uncompiled = @{$uncompiled[0]} if @uncompiled==1 && ref $uncompiled[0] eq 'ARRAY'; + my $compiled_string = ''; + foreach my $word_or_space (@uncompiled) { + next unless ref $word_or_space eq 'HASH'; + my $type = $word_or_space->{'t'} || ''; + $compiled_string .= compile_string(@{ $word_or_space->{c} }) if $type eq 'MetaInlines'; + next unless $type eq 'Str' || $type eq 'Space' || $type eq 'MetaString'; + $compiled_string .= $type eq 'Space' ? ' ' : $word_or_space->{c}; } - if ($date) { - $pagestate{$page}{meta}{date} = $date; + return $compiled_string; +} +sub unwrap_c { + # Unwrap pandoc's MetaLists, MetaInlines, etc. + # Finds the deepest-level scalar value for 'c' in the data structure. + # Lists with one element are replaced with the scalar, lists with more + # than one element are returned as an arrayref containing scalars. + my $container = shift; + if (ref $container eq 'ARRAY' && @$container > 1) { + if (ref $container->[0] eq 'HASH' && $container->[0]->{t} =~ /^(?:Str|Space)$/) { + # handles scalar author fields + return join('', map { compile_string($_) } @$container); + } else { + return [map {unwrap_c($_)} @$container]; + } + } elsif (ref $container eq 'ARRAY' && @$container) { + return unwrap_c($container->[0]); + } elsif (ref $container eq 'ARRAY') { + return; + } elsif (ref $container eq 'HASH' && $container->{c}) { + return unwrap_c($container->{c}); + } elsif (ref $container) { + return; + } else { + return $container; } - - return $content; } -1 +1; |