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#!/usr/bin/perl
# Blosxom
# Author: Rael Dornfest <rael@oreilly.com>
# Version: 2.0
# Home/Docs/Licensing: http://www.raelity.org/apps/blosxom/
package blosxom;
use Cwd;
my $cwd = getcwd();
# --- Configurable variables -----
# What's this blog's title?
$blog_title = "Perlgeek.de";
# What's this blog's description (for outgoing RSS feed)?
$blog_description = "Perl and Programming Blog.";
# What's this blog's primary language (for outgoing RSS feed)?
$blog_language = "en";
# Where are this blog's entries kept?
$datadir = "blog-source-en/";
$datadir = "$cwd/blog-source-en/";
# What's my preferred base URL for this blog (leave blank for automatic)?
$url = "/blog-en/";
# Should I stick only to the datadir for items or travel down the
# directory hierarchy looking for items? If so, to what depth?
# 0 = infinite depth (aka grab everything), 1 = datadir only, n = n levels down
$depth = 0;
# How many entries should I show on the home page?
$num_entries = 15;
# What file extension signifies a blosxom entry?
$file_extension = "txt";
# What is the default flavour?
$default_flavour = "html";
# Should I show entries from the future (i.e. dated after now)?
$show_future_entries = 0;
# --- Plugins (Optional) -----
# Where are my plugins kept?
$plugin_dir = "$cwd/blosxom-plugins/";
# Where should my modules keep their state information?
$plugin_state_dir = "$plugin_dir/state";
# --- Static Rendering -----
# Where are this blog's static files to be created?
$static_dir = "/Library/WebServer/Documents/blog";
# What's my administrative password (you must set this for static rendering)?
$static_password = "";
# What flavours should I generate statically?
@static_flavours = qw/html rss/;
# Should I statically generate individual entries?
# 0 = no, 1 = yes
$static_entries = 0;
# --------------------------------
use vars qw! $version $blog_title $blog_description $blog_language $datadir $url %template $template $depth $num_entries $file_extension $default_flavour $static_or_dynamic $plugin_dir $plugin_state_dir @plugins %plugins $static_dir $static_password @static_flavours $static_entries $path_info $path_info_yr $path_info_mo $path_info_da $path_info_mo_num $flavour $static_or_dynamic %month2num @num2month $interpolate $entries $output $header $show_future_entries %files %indexes %others $rssDate $dcDate!;
use strict;
use FileHandle;
use File::Find;
use File::stat;
use Time::localtime;
use CGI qw/:standard :netscape/;
$version = "2.0";
my $fh = new FileHandle;
%month2num = (nil=>'00', Jan=>'01', Feb=>'02', Mar=>'03', Apr=>'04', May=>'05', Jun=>'06', Jul=>'07', Aug=>'08', Sep=>'09', Oct=>'10', Nov=>'11', Dec=>'12');
@num2month = sort { $month2num{$a} <=> $month2num{$b} } keys %month2num;
# Use the stated preferred URL or figure it out automatically
$url ||= url();
$url =~ s/^included:/http:/; # Fix for Server Side Includes (SSI)
$url =~ s!/$!!;
# Drop ending any / from dir settings
$datadir =~ s!/$!!; $plugin_dir =~ s!/$!!; $static_dir =~ s!/$!!;
# Fix depth to take into account datadir's path
$depth and $depth += ($datadir =~ tr[/][]) - 1;
# Global variable to be used in head/foot.{flavour} templates
$path_info = '';
$static_or_dynamic = (!$ENV{GATEWAY_INTERFACE} and param('-password') and $static_password and param('-password') eq $static_password) ? 'static' : 'dynamic';
$static_or_dynamic eq 'dynamic' and param(-name=>'-quiet', -value=>1);
# Path Info Magic
# Take a gander at HTTP's PATH_INFO for optional blog name, archive yr/mo/day
my @path_info = split m{/}, path_info() || param('path');
shift @path_info;
while ($path_info[0] and $path_info[0] =~ /^[a-zA-Z].*$/ and $path_info[0] !~ /(.*)\.(.*)/) { $path_info .= '/' . shift @path_info; }
# Flavour specified by ?flav={flav} or index.{flav}
$flavour = '';
if ( $path_info[$#path_info] =~ /(.+)\.([a-zA-Z0-9_-]+)$/ ) {
$flavour = $2;
$1 ne 'index' and $path_info .= "/$1.$2";
pop @path_info;
} else {
$flavour = param('flav') || $default_flavour;
}
# Strip spurious slashes
$path_info =~ s!(^/*)|(/*$)!!g;
# Date fiddling
($path_info_yr,$path_info_mo,$path_info_da) = @path_info;
$path_info_mo_num = $path_info_mo ? ( $path_info_mo =~ /\d{2}/ ? $path_info_mo : ($month2num{ucfirst(lc $path_info_mo)} || undef) ) : undef;
# Define standard template subroutine, plugin-overridable at Plugins: Template
$template =
sub {
my ($path, $chunk, $flavour) = @_;
do {
return join '', <$fh> if $fh->open("< $datadir/$path/$chunk.$flavour");
} while ($path =~ s/(\/*[^\/]*)$// and $1);
return join '', ($template{$flavour}{$chunk} || $template{error}{$chunk} || '');
};
# Bring in the templates
%template = ();
while (<DATA>) {
last if /^(__END__)?$/;
my($ct, $comp, $txt) = /^(\S+)\s(\S+)\s(.*)$/;
$txt =~ s/\\n/\n/mg;
$template{$ct}{$comp} = $txt;
}
# Plugins: Start
if ( $plugin_dir and opendir PLUGINS, $plugin_dir ) {
foreach my $plugin ( grep { /^\w+$/ && -f "$plugin_dir/$_" } sort readdir(PLUGINS) ) {
my($plugin_name, $off) = $plugin =~ /^\d*(\w+?)(_?)$/;
my $on_off = $off eq '_' ? -1 : 1;
require "$plugin_dir/$plugin";
$plugin_name->start() and ( $plugins{$plugin_name} = $on_off ) and push @plugins, $plugin_name;
}
closedir PLUGINS;
}
# Plugins: Template
# Allow for the first encountered plugin::template subroutine to override the
# default built-in template subroutine
my $tmp; foreach my $plugin ( @plugins ) { $plugins{$plugin} > 0 and $plugin->can('template') and defined($tmp = $plugin->template()) and $template = $tmp and last; }
# Provide backward compatibility for Blosxom < 2.0rc1 plug-ins
sub load_template {
return &$template(@_);
}
# Define default find subroutine
$entries =
sub {
my(%files, %indexes, %others);
find(
sub {
my $d;
my $curr_depth = $File::Find::dir =~ tr[/][];
return if $depth and $curr_depth > $depth;
my $mtime = datesort::dateforfile($File::Find::name);
if (
# a match
$File::Find::name =~ m!^$datadir/(?:(.*)/)?(.+)\.$file_extension$!
# not an index, .file, and is readable
and $2 ne 'index' and $2 !~ /^\./ and (-r $File::Find::name)
) {
# to show or not to show future entries
(
$show_future_entries
or $mtime <= time
)
# add the file and its associated mtime to the list of files
and $files{$File::Find::name} = $mtime
# static rendering bits
and (
param('-all')
or !-f "$static_dir/$1/index." . $static_flavours[0]
or datesort::dateforfile("$static_dir/$1/index." . $static_flavours[0]) < datesort::dateforfile($File::Find::name)
)
and $indexes{$1} = 1
and $d = join('/', (nice_date($files{$File::Find::name}))[5,2,3])
and $indexes{$d} = $d
and $static_entries and $indexes{ ($1 ? "$1/" : '') . "$2.$file_extension" } = 1
}
else {
!-d $File::Find::name and -r $File::Find::name and $others{$File::Find::name} = $mtime;
}
}, $datadir
);
return (\%files, \%indexes, \%others);
};
# Plugins: Entries
# Allow for the first encountered plugin::entries subroutine to override the
# default built-in entries subroutine
my $tmp; foreach my $plugin ( @plugins ) { $plugins{$plugin} > 0 and $plugin->can('entries') and defined($tmp = $plugin->entries()) and $entries = $tmp and last; }
my ($files, $indexes, $others) = &$entries();
%files = %$files; %indexes = %$indexes; %others = ref $others ? %$others : ();
# Plugins: Filter
foreach my $plugin ( @plugins ) { $plugins{$plugin} > 0 and $plugin->can('filter') and $entries = $plugin->filter(\%files, \%others) }
# Static
if (!$ENV{GATEWAY_INTERFACE} and param('-password') and $static_password and param('-password') eq $static_password) {
param('-quiet') or print "Blosxom is generating static index pages...\n";
# Home Page and Directory Indexes
my %done;
foreach my $path ( sort keys %indexes) {
my $p = '';
foreach ( ('', split /\//, $path) ) {
$p .= "/$_";
$p =~ s!^/!!;
$path_info = $p;
$done{$p}++ and next;
(-d "$static_dir/$p" or $p =~ /\.$file_extension$/) or mkdir "$static_dir/$p", 0755;
foreach $flavour ( @static_flavours ) {
my $content_type = (&$template($p,'content_type',$flavour));
$content_type =~ s!\n.*!!s;
my $fn = $p =~ m!^(.+)\.$file_extension$! ? $1 : "$p/index";
param('-quiet') or print "$fn.$flavour\n";
my $fh_w = new FileHandle "> $static_dir/$fn.$flavour" or die "Couldn't open $static_dir/$p for writing: $!";
$output = '';
print $fh_w
$indexes{$path} == 1
? &generate('static', $p, '', $flavour, $content_type)
: &generate('static', '', $p, $flavour, $content_type);
$fh_w->close;
}
}
}
}
# Dynamic
else {
my $content_type = (&$template($path_info,'content_type',$flavour));
$content_type =~ s!\n.*!!s;
$header = {
-type => $content_type,
-charset => 'UTF-8'
};
print generate('dynamic', $path_info, "$path_info_yr/$path_info_mo_num/$path_info_da", $flavour, $content_type);
}
# Plugins: End
foreach my $plugin ( @plugins ) { $plugins{$plugin} > 0 and $plugin->can('end') and $entries = $plugin->end() }
# Generate
sub generate {
my($static_or_dynamic, $currentdir, $date, $flavour, $content_type) = @_;
my %f = %files;
# Plugins: Skip
# Allow plugins to decide if we can cut short story generation
my $skip; foreach my $plugin ( @plugins ) { $plugins{$plugin} > 0 and $plugin->can('skip') and defined($tmp = $plugin->skip()) and $skip = $tmp and last; }
# Define default interpolation subroutine
$interpolate =
sub {
package blosxom;
my $template = shift;
$template =~
s/(\$\w+(?:::)?\w*)/"defined $1 ? $1 : ''"/gee;
return $template;
};
unless (defined($skip) and $skip) {
# Plugins: Interpolate
# Allow for the first encountered plugin::interpolate subroutine to
# override the default built-in interpolate subroutine
my $tmp; foreach my $plugin ( @plugins ) { $plugins{$plugin} > 0 and $plugin->can('interpolate') and defined($tmp = $plugin->interpolate()) and $interpolate = $tmp and last; }
# Head
my $head = (&$template($currentdir,'head',$flavour));
# Plugins: Head
foreach my $plugin ( @plugins ) { $plugins{$plugin} > 0 and $plugin->can('head') and $entries = $plugin->head($currentdir, \$head) }
$head = &$interpolate($head);
$output .= $head;
# Stories
my $curdate = '';
my $ne = $num_entries;
if ( $currentdir =~ /(.*?)([^\/]+)\.(.+)$/ and $2 ne 'index' ) {
$currentdir = "$1$2.$file_extension";
$files{"$datadir/$1$2.$file_extension"} and %f = ( "$datadir/$1$2.$file_extension" => $files{"$datadir/$1$2.$file_extension"} );
}
else {
$currentdir =~ s!/index\..+$!!;
}
# Define a default sort subroutine
my $sort = sub {
my($files_ref) = @_;
return sort { $files_ref->{$b} <=> $files_ref->{$a} } keys %$files_ref;
};
# Plugins: Sort
# Allow for the first encountered plugin::sort subroutine to override the
# default built-in sort subroutine
my $tmp; foreach my $plugin ( @plugins ) { $plugins{$plugin} > 0 and $plugin->can('sort') and defined($tmp = $plugin->sort()) and $sort = $tmp and last; }
foreach my $path_file ( &$sort(\%f, \%others) ) {
last if $ne <= 0 && $date !~ /\d/;
use vars qw/ $path $fn /;
($path,$fn) = $path_file =~ m!^$datadir/(?:(.*)/)?(.*)\.$file_extension!;
# Only stories in the right hierarchy
$path =~ /^$currentdir/ or $path_file eq "$datadir/$currentdir" or next;
# Prepend a slash for use in templates only if a path exists
$path &&= "/$path";
$rssDate = ctime($f{$path_file});
$rssDate =~ s/(\w+) /$1, /;
{
my ($sec, $min, $hour, $mday, $mon, $year) = gmtime($f{$path_file});
$dcDate = sprintf "%04d-%02d-%02dT%02d:%02d:%02d+00:00",
$year + 1900, $mon+1, $mday, $hour, $min, $sec;
}
# Date fiddling for by-{year,month,day} archive views
use vars qw/ $dw $mo $mo_num $da $ti $yr $hr $min $hr12 $ampm /;
($dw,$mo,$mo_num,$da,$ti,$yr) = nice_date($files{"$path_file"});
($hr,$min) = split /:/, $ti;
($hr12, $ampm) = $hr >= 12 ? ($hr - 12,'pm') : ($hr, 'am');
$hr12 =~ s/^0//; $hr12 == 0 and $hr12 = 12;
# Only stories from the right date
my($path_info_yr,$path_info_mo_num, $path_info_da) = split /\//, $date;
next if $path_info_yr && $yr != $path_info_yr; last if $path_info_yr && $yr < $path_info_yr;
next if $path_info_mo_num && $mo ne $num2month[$path_info_mo_num];
next if $path_info_da && $da != $path_info_da; last if $path_info_da && $da < $path_info_da;
# Date
my $date = (&$template($path,'date',$flavour));
# Plugins: Date
foreach my $plugin ( @plugins ) { $plugins{$plugin} > 0 and $plugin->can('date') and $entries = $plugin->date($currentdir, \$date, $files{$path_file}, $dw,$mo,$mo_num,$da,$ti,$yr) }
$date = &$interpolate($date);
$curdate ne $date and $curdate = $date and $output .= $date;
use vars qw/ $title $body $raw /;
if (-f "$path_file" && $fh->open("< $path_file")) {
chomp($title = <$fh>);
chomp($body = join '', <$fh>);
$fh->close;
$raw = "$title\n$body";
}
my $story = (&$template($path,'story',$flavour));
# Plugins: Story
foreach my $plugin ( @plugins ) { $plugins{$plugin} > 0 and $plugin->can('story') and $entries = $plugin->story($path, $fn, \$story, \$title, \$body) }
if ($content_type =~ m{\Wxml$}) {
# Escape <, >, and &, and to produce valid RSS
my %escape = ('<'=>'&lt;', '>'=>'&gt;', '&'=>'&amp;', '"'=>'&quot;');
my $escape_re = join '|' => keys %escape;
$title =~ s/($escape_re)/$escape{$1}/g;
$body =~ s/($escape_re)/$escape{$1}/g;
}
$story = &$interpolate($story);
$output .= $story;
$fh->close;
$ne--;
}
# Foot
my $foot = (&$template($currentdir,'foot',$flavour));
# Plugins: Foot
foreach my $plugin ( @plugins ) { $plugins{$plugin} > 0 and $plugin->can('foot') and $entries = $plugin->foot($currentdir, \$foot) }
$foot = &$interpolate($foot);
$output .= $foot;
# Plugins: Last
foreach my $plugin ( @plugins ) { $plugins{$plugin} > 0 and $plugin->can('last') and $entries = $plugin->last() }
} # End skip
# Finally, add the header, if any and running dynamically
$static_or_dynamic eq 'dynamic' and $header and $output = header($header) . $output;
$output;
}
sub nice_date {
my($unixtime) = @_;
my $c_time = ctime($unixtime);
my($dw,$mo,$da,$ti,$yr) = ( $c_time =~ /(\w{3}) +(\w{3}) +(\d{1,2}) +(\d{2}:\d{2}):\d{2} +(\d{4})$/ );
$da = sprintf("%02d", $da);
my $mo_num = $month2num{$mo};
return ($dw,$mo,$mo_num,$da,$ti,$yr);
}
# Default HTML and RSS template bits
__DATA__
html content_type text/html
html head <html><head><link rel="alternate" type="application/rss+xml" title="RSS" href="$url/index.rss" /><title>$blog_title $path_info_da $path_info_mo $path_info_yr</title></head><body><center><font size="+3">$blog_title</font><br />$path_info_da $path_info_mo $path_info_yr</center><p />
html story <p><a name="$fn"><b>$title</b></a><br />$body<br /><br />posted at: $ti | path: <a href="$url$path">$path</a> | <a href="$url/$yr/$mo_num/$da#$fn">permanent link to this entry</a></p>\n
html date <h3>$dw, $da $mo $yr</h3>\n
html foot <p /><center><a href="http://www.blosxom.com/"><img src="http://www.blosxom.com/images/pb_blosxom.gif" border="0" /></a></body></html>
rss content_type text/xml
rss head <?xml version="1.0"?>\n<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns="http://purl.org/rss/1.0/" xmlns:dc="http://purl.org/dc/elements/1.1/">\n<!-- name="generator" content="blosxom/$version" -->\n<channel rdf:about="http://perlgeek.de$url$path/">\n <title>$blog_title $path_info_da $path_info_mo $path_info_yr</title>\n <link>http://perlgeek.de$url/</link>\n <description>$blog_description</description>\n</channel>\n
rss story <item rdf:about="http://perlgeek.de$url$path/$fn.html">\n <title>$title</title>\n <link>http://perlgeek.de$url$path/$fn.html</link>\n <author>Moritz Lenz</author>\n <pubDate>$rssDate</pubDate>\n <description>$body</description>\n </item>\n
rss date \n
rss foot \n</rdf:RDF>
error content_type text/html
error head <html><body><p><font color="red">Error: I'm afraid this is the first I've heard of a "$flavour" flavoured Blosxom. Try dropping the "/+$flavour" bit from the end of the URL.</font>\n\n
error story <p><b>$title</b><br />$body <a href="$url/$yr/$mo_num/$da#fn.$default_flavour">#</a></p>\n
error date <h3>$dw, $da $mo $yr</h3>\n
error foot </body></html>
__END__
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