forked from github/kensanata.oddmuse
106 lines
3.3 KiB
Perl
106 lines
3.3 KiB
Perl
# Copyright (C) 2004 Alex Schroeder <alex@emacswiki.org>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the
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# Free Software Foundation, Inc.
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# 59 Temple Place, Suite 330
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# Boston, MA 02111-1307 USA
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use strict;
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AddModuleDescription('html-template.pl', 'HTML Templates');
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# The entire mechanism of how pages are built is now upside down.
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# Instead of writing code that assembles pages, we load templates,
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# that refer to pieces of code.
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#
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# This is the beginning of PHP-in-Perl. :(
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our ($q, %Action, $DataDir, $UseCache, $LastUpdate);
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our ($HtmlTemplateDir);
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$HtmlTemplateDir = "$DataDir/templates";
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*BrowsePage = \&DoHtmlTemplate;
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# replace all actions with DoHtmlTemplate!
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foreach my $key (keys %Action) {
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$Action{$key} = \&DoHtmlTemplate;
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}
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sub DoHtmlTemplate {
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my ($id, $raw, $comment, $status) = @_;
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if ($q->http('HTTP_IF_MODIFIED_SINCE')
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and $q->http('HTTP_IF_MODIFIED_SINCE') eq gmtime($LastUpdate)
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and GetParam('cache', $UseCache) >= 2) {
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print $q->header(-status=>'304 NOT MODIFIED');
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return;
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}
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OpenPage($id) if $id;
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print GetHttpHeader('text/html');
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print GetHtmlTemplate();
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}
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# Some subroutines from the script need a wrapper in order to return a
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# string instead of printing directly.
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sub HtmlTemplateRc {
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my $result = ToString sub { DoRc(\&GetRcHtml) };
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return $result;
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}
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# Processing instructions are processed as Perl code, and its result
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# is substituted. Examples:
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#
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# <?&foo?> -- This will call the subroutine &foo. It's return value
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# will be substituted for the processing instruction.
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#
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# <?$foo?> -- This substitutes the value of variable $foo.
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#
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# Since the processing instruction is valid XHTML, the template should
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# be valid XHTML as well.
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sub GetHtmlTemplate {
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my $template = shift || GetActionHtmlTemplate();
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my $html = ReadFileOrDie($template);
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$html =~ s/<\?(.*?)\?>/HtmlTemplateEval($1)/egs;
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return $html;
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}
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sub HtmlTemplateEval {
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my $code = shift;
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my $result = eval($code) || $@;
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}
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sub GetActionHtmlTemplate {
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my $action = GetParam('action', 'browse');
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# return browse.de.html, or browse.html, or error.html, or report an error...
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foreach my $f ((map { "$action.$_" } HtmlTemplateLanguage()), $action, "error") {
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return "$HtmlTemplateDir/$f.html" if -r "$HtmlTemplateDir/$f.html";
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}
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ReportError(Tss('Could not find %1.html template in %2', $action, $HtmlTemplateDir),
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'500 INTERNAL SERVER ERROR');
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}
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sub HtmlTemplateLanguage {
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my $requested_language = $q->http('Accept-language');
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my @languages = split(/ *, */, $requested_language);
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my %Lang = ();
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foreach (@languages) {
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my $qual = 1;
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$qual = $1 if (/q=([0-9.]+)/);
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$Lang{$qual} = $1 if (/^([-a-z]+)/);
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}
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return map { $Lang{$_} } sort { $b <=> $a } keys %Lang;
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}
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