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Revision: 1.38
Committed: Sat May 30 07:02:47 2009 UTC (15 years, 1 month ago) by root
Branch: MAIN
Changes since 1.37: +7 -0 lines
Log Message: 
add coro-mysql

File Contents

# User Rev Content
1 elmex 1.1 #!/usr/bin/perl
2    
3     umask 022;
4    
5     mkdir "software.schmorp.de", 0755;
6     mkdir "software.schmorp.de/pkg", 0755;
7     mkdir "software.schmorp.de/img", 0755;
8     system "rsync -av *.jpg software.schmorp.de/img/";
9    
10     sub hdr($$) {
11     print <<EOF;
12     <?xml version='1.0' encoding='utf-8'?>
13     <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
14     <html xmlns='http://www.w3.org/1999/xhtml' xml:lang='en'>
15     <head>
16     <title>$_[0]</title>
17     <style type='text/css'>
18     body {
19     background: white;
20     color: black;
21     font-family: Arial, Helvetica, sans-serif;
22     font-size: 12pt;
23     }
24    
25     .bg-ede { background: url(/img/ede.jpg) no-repeat; padding: 20px; width: 100%; height: 82px; }
26     .bg-perl { background: url(/img/perl.jpg) no-repeat; padding: 20px; width: 100%; height: 194px; }
27     .bg-bluete { background: url(/img/bluete.jpg) no-repeat; padding: 20px; width: 100%; height: 148px; }
28    
29     a:link { color: #00f; }
30     a:visited { color: #008; }
31     a:hover { color: #800; }
32     a:active { color: #f00; }
33    
34     img { display: block; }
35    
36     tt { font-family: "Andale Mono", "Lettergothic", monospace; }
37    
38     th { border-top: 1px dashed #aaa; vertical-align: top; text-align: left; padding: 0.2ex; }
39     td { border-top: 1px dashed #aaa; vertical-align: top; text-align: left; padding: 0.2ex; }
40    
41     hr.footer { display: none; }
42     .footer { font-size: 8pt; border-top: 1px solid red; }
43     </style>
44     </head>
45     <body>
46 root 1.9 <p class='back'><a href='/'>Schmorpforge Ta-Sa Software Repository</a></p>
47 elmex 1.1 <h1 class="$_[1]">$_[0]</h1>
48     <div style="text-align: center; float: right; margin-left: 1em; margin-bottom: 1em">
49     <a href="http://www.deliantra.net/">
50     <img src="http://www.deliantra.net/images/deliantra.png" border="0" alt="Deliantra Free MMORPG" style="display: inline"/>
51     <br />
52     The free as in beer, liberal, code &amp; content retro-style graphical MMORPG :)
53     </a>
54     </div>
55     EOF
56     }
57    
58     sub ftr {
59     print <<EOF;
60     <hr class='footer'/>
61     <p class='footer'>
62     Contact for this page: <a href="mailto:schmorpforge\@schmorp.de">Marc Lehmann &lt;schmorpforge\@schmorp.de&gt;</a>.
63     </p>
64     </body>
65     </html>
66     EOF
67     }
68    
69     $_ = <DATA>;
70     for (;defined $_;) {
71     my ($name, @args) = split /\s+/;
72    
73     next unless $name;
74    
75     my $desc = "";
76     $desc .= $_ while (defined ($_ = <DATA>) and !/^\S/);
77     $desc =~ s/^(.*?)\n\s*\n//s
78     or die "malformed desc in $name: $desc";
79    
80     my $short = $1;
81    
82     $index{$name} = "<tr><th id='$name'><a href='pkg/$name.html'>$name</a></th><td>$short</td></tr>";
83    
84     open STDOUT, ">", "software.schmorp.de/pkg/$name.html"
85     or die "software.schmorp.de/pkg/$name.html: $!";
86    
87     if (grep /cpan/, @args) {
88     hdr $name, "bg-perl";
89     } else {
90     hdr $name, "bg-ede";
91     }
92    
93     print <<EOF;
94     <p class='short-desc'>$short</p>
95    
96     <h2>Blurb</h2>
97     <p class='blurb'>$desc</p>
98     <h2>Availability</h2>
99     <ul>
100     EOF
101 elmex 1.5 if (grep /git/, @args) {
102     print <<EOF;
103     <li><a href='http://git.ta-sa.org/?p=$name.git;a=summary'>Browse GIT repository '$name'</a></li>
104     <li>Read-only GIT checkout:<br />
105     <tt>&#160;git-clone http://git.ta-sa.org/$name.git</tt>
106     </li>
107 elmex 1.35 <li>(EXPERIMENTAL) contributor CVS access (command requires CVS versions (&gt;= 1.12.11)):<br />
108 elmex 1.33 <tt>cvs -d ":ext;CVS_SERVER=git-cvsserver:USER\@ruth.plan9.de/gitroot/$name.git" co -d $name master</tt>
109     </li>
110 elmex 1.5 EOF
111     } else {
112     my $modules = $name;
113     $modules = "$1" if grep /modules\((.*)\)/, @args;
114 elmex 1.1
115 elmex 1.5 print <<EOF;
116     <li><a href='http://cvs.schmorp.de/$name'>Browse CVS module '$name'</a></li>
117 elmex 1.1 <li>Anonymous CVS checkout:<br />
118     <tt>&#160;cvs -z3 -d :pserver:anonymous\@cvs.schmorp.de/schmorpforge co $modules</tt><p />
119    
120     <small>
121    
122 root 1.30 <!--
123 elmex 1.1 <p>The warning
124     <b>cvs checkout: warning: cannot write to history file /schmorpforge/CVSROOT/history: Permission denied</b>
125     is expected and harmless, just ignore it. It simply means you have no write access to the repository.
126     </p>
127 root 1.30 -->
128 elmex 1.1
129     <p>The CVS server moved again on 2008-02-21, you can use the following
130     (untested) snippet to update your CVS checkout. Run it in the top level
131     checked out directory:</ br>
132    
133     <pre>
134     find . -name CVS | xargs -I% find % -name Root |
135     xargs perl -i -pe 's%:pserver:anonymous\\\@cvs.schmorp.de:636/schmorpforge%:pserver:anonymous\\\@cvs.schmorp.de:/schmorpforge%'</pre>
136     </p>
137    
138     </small>
139    
140     </li>
141     EOF
142 elmex 1.5 }
143 elmex 1.1
144     print "<li><a href='http://dist.schmorp.de/$name/'>File Releases</a></li>\n"
145     if grep /dist/, @args;
146     print "<li><a href='http://www.cpan.org/modules/by-authors/Marc_Lehmann/'>File Releases (CPAN)</a></li>\n"
147 elmex 1.5 if grep /cpan$/, @args;
148     print "<li><a href='http://www.cpan.org/modules/by-authors/id/E/EL/ELMEX/'>File Releases (CPAN)</a></li>\n"
149     if grep /cpan-elmex/, @args;
150 elmex 1.1 for (@args) {
151     print "<li><a href='http://lists.schmorp.de/mailman/listinfo/" . ($1 || $name) . "'>Mailing List '" . ($1 || $name) . "'</a></li>\n"
152     if /list\((.*)\)/;
153     }
154    
155     print "</ul>";
156    
157 elmex 1.4 if (my @files = grep $_, map /(cvs-co|cvs-pod|git-pod|git-co)\((\S+)\)/ && [$1, $2], @args) {
158 elmex 1.1 print "<h2>Additional Documents</h2><ul>";
159    
160     for (@files) {
161     my ($type, $arg) = @$_;
162    
163     if ($type eq "cvs-co") {
164     print "<li><a href='http://cvs.schmorp.de/$name/$arg'>$arg</a></li>";
165 elmex 1.4
166 elmex 1.1 } elsif ($type eq "cvs-pod") {
167     my ($file, $desc) = $arg =~ /(.*),(.*)/ ? ($1, $2) : ($arg, $arg);
168     $desc ||= "<b>Main Manual Page</b>";
169     print "<li><a href='http://pod.tst.eu/http://cvs.schmorp.de/$name/$file'>$desc</a></li>";
170 elmex 1.4
171 elmex 1.3 } elsif ($type eq 'git-co') {
172 elmex 1.4 print "<li><a href='http://git.ta-sa.org/$name/$arg'>$arg</a></li>";
173 elmex 1.5
174 elmex 1.4 } elsif ($type eq "git-pod") {
175     my ($file, $desc) = $arg =~ /(.*),(.*)/ ? ($1, $2) : ($arg, $arg);
176     $desc ||= "<b>Main Manual Page</b>";
177     print "<li><a href='http://pod.tst.eu/http://git.ta-sa.org/$name/$file'>$desc</a></li>";
178    
179 elmex 1.1 }
180     }
181    
182     print "</ul>";
183     }
184    
185     ftr;
186     }
187    
188     open STDOUT, ">software.schmorp.de/index.html";
189    
190     hdr "Package Index", "bg-bluete";
191    
192     print <<EOF;
193    
194 root 1.9 <p>This page briefly documents the Schmorpforge Ta-Sa Software Repository and
195 elmex 1.1 lists all projects available here.</p>
196    
197     <ul>
198     <li>All CVS Repositories can be found <a href="http://cvs.schmorp.de/">here</a>.</li>
199 root 1.9 <li>All GIT Repositories can be found <a href="http://git.ta-sa.org/">here</a>.</li>
200     <li>File Releases can be found <a href="http://dist.schmorp.de/">here</a> or on CPAN (for Perl modules).</li>
201 elmex 1.1 <li>All Mailinglists can be found <a href="http://lists.schmorp.de/mailman/listinfo">here</a>.</li>
202 elmex 1.11 <li>The Wiki can be found <a href="http://wiki.schmorp.de/">here</a>.</li>
203 elmex 1.1 </ul>
204     <p>Projects listed on this page:</p>
205     <table>
206     EOF
207    
208     print $index{$_} for sort { (lc $a) cmp (lc $b) } keys %index;
209    
210     print "</table>";
211     ftr;
212    
213     __DATA__
214     rxvt-unicode dist list(rxvt-unicode) cvs-pod(doc/rxvt.1.pod,) cvs-pod(doc/rxvt.7.pod,FAQ) cvs-pod(src/urxvt.pm,Perl) cvs-co(Changes)
215     rxvt-unicode is a clone of the well known terminal emulator rxvt.
216    
217     <p>If you have a problem, please have a look at the
218     <a href="http://cvs.schmorp.de/rxvt-unicode/doc/rxvt.7.html">FAQ</a>
219     <em>first</em>.</p>
220    
221     Its main features (many of them unique) over rxvt are:
222    
223     <ul>
224     <li>Stores text in Unicode (either UCS-2 or UCS-4).</li>
225     <li>Uses locale-correct input, output and width: as long as your system supports the locale,
226     rxvt-unicode will display correctly.</li>
227     <li>Daemon mode: one daemon can open multiple windows on multiple displays, which
228     improves memory usage and startup time considerably.</li>
229     <li>Embedded perl, for endless customization and improvement opportunities, such as:
230     <ul>
231     <li>Tabbed terminal support.</li>
232     <li>Regex-driven customisable selection that can properly select shell arguments, urls etc.</li>
233     <li>Selection-transformation and option popup menus.</li>
234     <li>Automatically transforming the selection once made.</li>
235     <li>Incremental scrollback buffer search.</li>
236     <li>Automatic URL-underlining and launching.</li>
237     <li>Remote pastebin, digital clock, block graphics to ascii filter and
238     whatever you like to implement for yourself.</li>
239     </ul>
240     </li>
241     <li>Crash-free. At least I try, but rxvt-unicode certainly crashes much less often than
242     rxvt and its many clones, and reproducible bugs get fixed immediately.</li>
243     <li>Completely flicker-free.</li>
244     <li>Re-wraps long lines instead of splitting or cutting them on resizes.</li>
245     <li>Full combining character support (unlike xterm :).</li>
246     <li>Multiple fonts supported at the same time: No need to choose between
247     nice japanese and ugly latin, or no japanese and nice latin characters :).</li>
248     <li>Supports Xft and core fonts in any combination.</li>
249     <li>Can easily be embedded into other applications.</li>
250     <li>All documentation accessible through manpages.</li>
251     <li>Locale-independent XIM support.</li>
252     <li>Many small improvements, such as improved and corrected terminfo, improved secondary screen modes,
253     italic and bold font support, tinting and shading.</li>
254     <li>Encapsulation of privileged operations in a separate process (improves security).</li>
255     <li>Optimised for local <i>and</i> remote connections.</li>
256     </ul>
257    
258     <br />
259     And its main <em>missing</em> features (which users request but are not (yet?) implemented) are:
260    
261     <ul>
262     <li>Complex script support, such as arabic or tibetian - more info is needed. (use mlterm)</li>
263     <li>Right-to-Left rendering - more info is needed. (use mlterm)</li>
264     <li>IIIMF (Intranet/Internet Input Method Framework) support. (use scim)</li>
265     </ul>
266    
267     <br />
268    
269     There is an IRC channel for discussion on <a
270     href='irc://irc.freenode.net/rxvt-unicode'><tt>irc.freenode.net
271     #rxvt-unicode</tt></a>.
272    
273     libptytty dist list(rxvt-unicode) cvs-pod(doc/libptytty.3.pod) cvs-co(Changes)
274     libptytty is an offspring of rxvt-unicode that handles pty/tty/utmp/wtmp/lastlog handling
275     in mostly OS-independent ways, so it's less of a hassle for you :)
276    
277     Mailing list and contacts are the same as for rxvt-unicode, above.
278    
279 root 1.36 gtkbfc cvs-pod(README)
280 elmex 1.1 Gtk+ bash file chooser replacement.
281    
282     <b>gtkbfc</b> is a hack that replaces the dreaded, slow and hard-to-use GTK+
283     file chooser by a rxvt-unicode window with a little script that lets you use
284     readline tab-completion to enter filenames.
285    
286     Again, its a dire hack and will not work with all programs. It does work
287     for gimp, firefox, gedit at least, though.
288    
289     CV cpan cvs-pod(bin/cv,) cvs-co(Changes)
290     Gtk2::CV is a perl module that implements an image viewer.
291    
292     It comes with its own demo app, named <tt>cv</tt>, which is loosely
293     modeled after the classic <tt>xv</tt>, although it displays images much
294     faster than the great original. Stable releases are also found on CPAN.
295    
296     kgsueme cpan list(kgsueme) cvs-co(Changes)
297     This perl module is about reverse engineering the
298     <a href="http://cvs.schmorp.de/kgsueme/doc/protocol.html">protocol</a>
299     (<a href="http://cvs.schmorp.de/kgsueme/doc/protocol.xml">xml source</a>)
300     of the popular <a href="http://kgs.kiseido.com">Kiseido Go Server</a>.
301    
302     It features a sample Gtk+2 client (<a
303     href="http://kgsueme.schmorp.de/screenshot.jpg">screenshot</a>), a gtp
304     and a igs interface. It mostly focuses on documenting the protocol and
305     delivering a stable reference implementation which makes it easy to write
306     your own clients, bots and so on. It also contains Gtk2 modules for
307     KGS-independent rendering of beautiful Go boards. For a introduction to
308     the game of go, look <a href="http://playgo.to/interactive/">here</a>.
309    
310     Net-Knuddels cvs-pod(Net/Knuddels.pm,)
311     This perl module provides an API for group communications using the
312     <a href="http://www.knuddels.de/">www.knuddels.de</a> protocol. It is outdated
313     and only provided as reference.
314    
315     This module implements the knuddels.de chat protocol. Since it was created
316     the protocol changed in unknown ways, so this module no longer works. It is
317     provided as reference, though, in case the protocol didn't change much,
318     so one can learn about the protocol.
319     It could be used to write Knuddels clients, bots and even servers
320     (although the latter doesn't make much sense, the protocol is rather
321     ugly. If you want to implement your own group communication server, use
322     IRC instead).
323    
324 elmex 1.35 AnyEvent-IRC cpan-elmex git-pod(lib/AnyEvent/IRC.pm,) git-co(Changes) git-co(samples/anyeventirccl) git-co(samples/anyeventirc)
325 elmex 1.1 This module provides an alternative to the Net-IRC and Net-IRC2
326 elmex 1.35 modules. Its design rationale is offering a 100% non-blocking
327 elmex 1.1 callback-based interface, RFC-compliant parsing and a lightweight
328     approach to modularity and reusability.
329    
330 root 1.37 Guard cpan cvs-pod(Guard.pm,) cvs-co(Changes)
331     This small module implements scope and object guards, that is, code blocks
332     that are executed when a scope is being exited (or an object is destroyed).
333    
334     Much effort was invested into these guards behaving "sensibly" in the
335     presence of thrown exceptions, errors and other adverse conditions, as
336     well as into good performance.
337    
338 elmex 1.1 Net-IRC-Server cvs-pod(Net/IRC/Server.pm,)
339     This module provides a simple API for handling the IRC Protocol
340     aiming at implementing lightweight IRC-Servers.
341    
342     PApp-SQL cpan cvs-pod(SQL.pm,)
343     Absolutely easy yet fast and powerful SQL access.
344    
345     This module wraps the DBI prepare/bind/execute calls into a single "sql_exec" call,
346     complete with statement caching, so you get the efficiency of prepare, the safety
347     of using placeholders and the speed of bound result values in a simple call.
348    
349     Example:
350    
351     <pre>
352     my $st = sql_exec \my ($id, $name),
353     "select id, name from db where name like %",
354     "pfx%";
355     while ($st->fetch) {
356     print "$id $name\n";
357     }
358     </pre>
359    
360     libcoro cvs-co(README) cvs-co(coro.h)
361     This C-library implements coroutines (cooperative multitasking) in a
362     portable fashion.
363    
364     As long as your system implements the <tt>ucontext</tt> (Unix) or the
365     older <tt>sigaltstack</tt> interfaces it should work out of the box, with
366     minimal configuration (it consists of only a single <tt>.h</tt> and a
367     single <tt>.c</tt> file). It is known to run on a wide variety of unix
368     systems (SunOS, IRIX, GNU/Linux, HP-UX) and also on Windows, does not use
369     any assembly language and is architecture-independent.
370    
371 root 1.13 deliantra/server cvs-co(README) cvs-co(Changes) cvs-co(COPYING.Affero)
372 elmex 1.1 The <a href="http://www.deliantra.net/">Deliantra</a> game server.
373    
374     Follow the link to <a href="http://www.deliantra.net/">Deliantra</a> for background info.
375    
376 root 1.13 deliantra/maps cvs-co(Changes) cvs-co(COPYING.Affero)
377 elmex 1.1 The <a href="http://www.deliantra.net/">Deliantra</a> game maps.
378    
379     Follow the link to <a href="http://www.deliantra.net/">Deliantra</a> for background info.
380    
381 root 1.13 deliantra/arch cvs-co(Changes) cvs-co(COPYING.Affero)
382 elmex 1.1 The <a href="http://www.deliantra.net/">Deliantra</a> game resources.
383    
384     Follow the link to <a href="http://www.deliantra.net/">Deliantra</a> for background info.
385    
386 root 1.13 deliantra/Deliantra-Client cvs-pod(bin/deliantra,) cvs-co(Changes)
387 elmex 1.1 A modern, fullscreen client for <a href="http://www.deliantra.net/">Deliantra</a>, written using Perl
388     and leveraging only OpenGL for display and thus being easily portable.
389     See its <a href="http://www.deliantra.net/client.html">homepage</a>.
390    
391     To install it, you need <a href="http://www.libsdl.org">SDL</a>, <a href="http://www.libsdl.org/projects/SDL_mixer/">SDL_mixer</a>,
392     <a href="http://www.libsdl.org/projects/SDL_image/">SDL_image</a>, <a href="http://www.pango.org">PanGo</a> (with freetype2 and
393     cairo backends at the moment), and the BDB, AnyEvent, Pod::POM, EV and
394 root 1.13 <a href="http://software.schmorp.de/pkg/deliantra/Deliantra.html">Deliantra</a> perl modules.
395 elmex 1.1
396 root 1.13 deliantra/Deliantra
397 elmex 1.1 Perl module family for the <a href="http://www.deliantra.net/">Deliantra</a> game.
398    
399     They can be used to read/write/cache archetypes, image packs and map files.
400     Follow the link to <a href="http://www.deliantra.net/">Deliantra</a> for background info.
401    
402 elmex 1.35 deliantra/gde cvs-pod(bin/gde,)
403 elmex 1.1 The <a href="http://www.deliantra.net/">Deliantra</a> editor, written in Perl + Gtk2.
404    
405     The editor for the game Deliantra, written in Perl.
406     Follow the link to <a href="http://www.deliantra.net/">Deliantra</a> for background info.
407    
408 root 1.13 deliantra
409 elmex 1.1 <a href="http://www.deliantra.net/">Deliantra</a> server, archetypes, maps,
410     editor, client and support modules distribution.
411    
412     Follow the link to <a href="http://www.deliantra.net/">Deliantra</a> for background info.
413    
414     cfmaps
415     This is a collection of scripts that I use to create the <a
416     href="http://www.deliantra.net/">Deliantra</a> maps at <a
417     href="http://maps.deliantra.net/">maps.deliantra.net</a>.
418    
419     They are not documented and somewhat specialised, but the scripts might
420     be of some use.
421    
422     Faster cpan cvs-pod(Faster.pm,)
423     A perl module that makes perl run, well, faster, using a very primitive just in time compiler.
424    
425     As the name implies, using this module makes your perl program run
426     faster. Actually, much slower initially, as it compiles every function
427     to C and later to a shared object, but then you can expect a performance
428     increase by 10-50%, depending on what your program does.
429    
430 root 1.34 liblzf cvs-co(README) cvs-co(lzf.h) dist
431 elmex 1.1 LibLZF is a very small data compression library.
432    
433     It consists of only two .c and two .h files and is very easy to
434     incorporate into your own programs. The compression algorithm is very,
435     very fast, yet still written in portable C. More info and the latest
436     release can be found at the <a href="http://liblzf.plan9.de">LibLZF
437     Homepage</a>.
438    
439     root-tail cvs-co(README) cvs-co(Changes)
440     Full-featured program to print text directly to the X11 root window.
441    
442     More info, screenshots, documentation and current releases can be found
443     at the <a href="http://root-tail.plan9.de">root-tail homepage</a>.
444    
445     xcb cvs-co(README) cvs-co(Changes)
446     A fork of the unmaintained xcb (x cut buffers) program implementing better i18n.
447    
448     lmainit cvs-co(NEWS)
449     A sysvinit replacement that can even be configured to be sysvinit-compliant.
450    
451     See <a href="http://www.goof.com/pcg/marc/lmainit.html">its homepage</a> for more info.
452    
453     Algorithm-FEC cpan cvs-pod(FEC.pm,) cvs-co(README.fec) cvs-co(Changes)
454     Perl module implementing forward error correction using Vandermonde matrices
455    
456 root 1.27 AnyEvent cpan cvs-pod(lib/AnyEvent.pm,) cvs-pod(lib/AnyEvent/Intro.pod,Introduction/Tutorial) cvs-co(Changes) cvs-pod(lib/AnyEvent/Util.pm,AnyEvent::Util) cvs-pod(lib/AnyEvent/Handle.pm,AnyEvent::Handle) cvs-pod(lib/AnyEvent/Socket.pm,AnyEvent::Socket) cvs-pod(lib/AnyEvent/DNS.pm,AnyEvent::DNS) cvs-pod(lib/AnyEvent/Impl/EV.pm,AnyEvent::Impl::EV) cvs-pod(lib/AnyEvent/Impl/Event.pm,AnyEvent::Impl::Event) cvs-pod(lib/AnyEvent/Impl/Glib.pm,AnyEvent::Impl::Glib) cvs-pod(lib/AnyEvent/Impl/Tk.pm,AnyEvent::Impl::Tk) cvs-pod(lib/AnyEvent/Impl/Perl.pm,AnyEvent::Impl::Perl) cvs-pod(lib/AnyEvent/Impl/Qt.pm,AnyEvent::Impl::Qt) cvs-pod(lib/AnyEvent/Impl/EventLib.pm,AnyEvent::Impl::EventLib) cvs-pod(lib/AnyEvent/Impl/POE.pm,AnyEvent::Impl::POE)
457 elmex 1.1 This module offers a simple API for I/O, timer, signal, child process
458     and completion events, independent of a specific event loop.
459    
460 root 1.26 <p>This module allows module authors to use those events internally without
461 elmex 1.1 forcing users of the module to use a specific event loop, without adding
462 root 1.14 noticable overhead. Currently supported event loops are EV, Event,
463     Glib/Gtk2, Tk, Qt, Event::Lib and POE (and thus also WxWidgets and
464     Prima). It contains a very fast (see benchmarks in the main manual page)
465     Pure Perl event loop and doesn't rely on XS, which ensures that your
466 root 1.26 program will always run even when no C-based event loop is available.</p>
467 elmex 1.1
468 root 1.26 <p>In addition to the event core (which might be all you need), AnyEvent
469 root 1.25 comes with an optional, fully asynchronous, pure-perl DNS resolver
470     library supporting UDP, TCP and EDNS0, with many utility functions to
471     "just resolve" stuff without having to instantiate even a resolver object
472 root 1.26 (and including an equivalent of C<getaddrinfo>).</p>
473 root 1.25
474 root 1.26 <p>The AnyEvent::Socket offers utility functions to make handling TCP
475 root 1.25 connections (100% non-blocking, including DNS resolution, with both IPv4
476     and IPv6) and addresses as easy as possible, to the point of making IPv6
477 root 1.26 completely transparent.</p>
478 root 1.25
479 root 1.26 <p>Lastly, AnyEvent::Handle offers a powerful framework for asynchronous and
480 root 1.25 buffered protocol handling. You can push multiple read event handlers
481     to parse your protocol and start TLS/SSL negotiation transparently (and
482 root 1.26 fully non-blocking) at any time, in both server and client mode.</p>
483 root 1.25
484 elmex 1.1 AnyEvent-FastPing cpan cvs-pod(FastPing.pm,)
485     This module implements a very fast and relatively flexible
486     ping (ping as in icmp echo request).
487    
488     This module allows you to quickly send ipv4 and ipv6 pings at a defined
489     rate to whole address ranges. It is fully event-driven (doesn't block
490     the perl interpreter) and can easily generate hundreds of thousands of
491     pings per second. Target specification is done by specifying one or
492     more address ranges, to which pings will be distributed according to a
493     least-load principle.
494    
495     A command line utility (<tt>fastping</tt>) is included.
496    
497 root 1.31 AnyEvent-HTTP cpan cvs-pod(HTTP.pm,) cvs-co(Changes)
498     A simple and plain event based http and https client.
499    
500     This module implements a simple, stateless and non-blocking HTTP
501     client. It supports GET, POST and other request methods, cookies and more,
502     all on a very low level. It can follow redirects supports proxies and
503     automatically limits the number of connections to the values specified in
504     the RFC.
505    
506     It should generally be a "good client" that is enough for most HTTP
507     tasks. Simple tasks should be simple, but complex tasks should still be
508     possible as the user retains control over request and response headers.
509    
510     The caller is responsible for authentication management, cookies (if
511     the simplistic implementation in this module doesn't suffice), referer
512     and other high-level protocol details for which this module offers only
513     limited support.
514    
515     AnyEvent-DBI cpan cvs-pod(DBI.pm,) cvs-co(Changes)
516     A relatively simple wrapper around DBI to make asynchronous
517     SQL requests.
518    
519     This module implements asynchronous DBI access my forking or executing
520     separate "DBI-Server" processes and sending them requests.
521    
522     It means that you can run DBI requests in parallel to other tasks.
523    
524     AnyEvent-HTTPD cpan-elmex git-pod(lib/AnyEvent/HTTPD.pm,) git-co(Changes)
525     A simple and plain event based http web application server Perl module.
526    
527     This is a very basic HTTP server that allows the user/programmer to install
528     hooks for URL paths to generate the output. It uses AnyEvent to be easily
529     embeddable into other applications. The main objective was to make it
530     easier to make simple HTTP frontends in Perl for Perl programs and Perl modules.
531    
532     AnyEvent-IGS cpan-elmex git-pod(lib/AnyEvent/IGS.pm,) git-co(Changes)
533     A Perl module that interfaces to the International Go Server.
534    
535     This module is an Anyevent-based interface to the International Go Server
536     protocol.
537    
538     AnyEvent-EditText cpan-elmex git-pod(lib/AnyEvent/EditText.pm,) git-co(Changes)
539     A Perl module which allows editing any text via an editor in a seperate process.
540    
541     A utility Perl module that will start a terminal/editor for you and will
542     wait non-blocking for you to finish editing that file. Very useful to embed
543     content edititing in event based programs that have a AnyEvent compatible
544     event loop.
545    
546 elmex 1.1 Audio-Play-MPG123 cpan cvs-pod(MPG123.pm,) cvs-co(Changes)
547     A Perl module implementing an interface to mpg123.
548    
549     Compress-LZV1 cpan cvs-pod(LZV1.pm,) cvs-co(Changes)
550     A Perl module implementing the LZV1 compression algorithm. See
551     <tt>Compress::LZF</tt> for a better algorithm and module.
552    
553     Convert-CD cvs-pod(lib/Convert/CD.pm,) cvs-pod(bin/cvtiso,cvtiso) cvs-co(doc/) cvs-co(Changes)
554     Unfinished Perl project implementing CD image formats. Extracting ISO images
555     already works.
556    
557     Convert-Scalar cpan cvs-pod(Scalar.pm,) cvs-co(Changes)
558     Perl module to convert between different representations of Perl scalars.
559    
560     Convert-UUlib cpan cvs-pod(UUlib.pm,) cvs-co(Changes)
561     Perl interface to the uulib library (a.k.a. uudeview/uuenview), which
562     allows easy decoding of multipart mime, uuencode and a whole lot of
563     differently encoded messages. You basically throw files at it, and
564     it extracts the files in them. This module is used by the popular <a
565     href="www.amavis.org">amavis virus scanner</a>.
566    
567 root 1.16 Coro cpan cvs-co(Changes) cvs-pod(Coro.pm,) cvs-pod(Coro/AIO.pm,Coro::AIO) cvs-pod(Coro/AnyEvent.pm,Coro::AnyEvent) cvs-pod(Coro/BDB.pm,Coro::BDB) cvs-pod(Coro/Channel.pm,Coro::Channel) cvs-pod(Coro/Debug.pm,Coro::Debug) cvs-pod(Coro/EV.pm,Coro::EV) cvs-pod(Coro/Event.pm,Coro::Event) cvs-pod(Coro/Handle.pm,Coro::Handle) cvs-pod(Coro/LWP.pm,Coro::LWP) cvs-pod(Coro/MakeMaker.pm,Coro::MakeMaker) cvs-pod(Coro/RWLock.pm,Coro::RWLock) cvs-pod(Coro/Select.pm,Coro::Select) cvs-pod(Coro/Semaphore.pm,Coro::Semaphore) cvs-pod(Coro/SemaphoreSet.pm,Coro::SemaphoreSet) cvs-pod(Coro/Signal.pm,Coro::Signal) cvs-pod(Coro/Socket.pm,Coro::Socket) cvs-pod(Coro/Specific.pm,Coro::Specific) cvs-pod(Coro/State.pm,Coro::State) cvs-pod(Coro/Storable.pm,Coro::Storable) cvs-pod(Coro/Timer.pm,Coro::Timer) cvs-pod(Coro/Util.pm,Coro::Util)
568 elmex 1.1 A large Perl module family that implements cooperative multitasking in
569     Perl. It supports filehandle and event abstraction and also implements
570     continuations as well as the necessary directives to implement a slightly
571     limited call/cc in Perl.
572    
573 root 1.38 Coro-Mysql cpan cvs-co(Changes) cvs-pod(Mysql.pm,)
574     Lets other threads run while doing mysql requests via DBD::mysql.
575    
576     This perl module patches libmysqlclient/DBD::mysql at runtime to allow
577     multiple Coro-based threads to make database accesses concurrently,
578     instead of blocking the whole process.
579    
580 elmex 1.1 Crypt-Twofish2 cpan cvs-pod(Twofish2.pm,) cvs-co(Changes)
581     A Perl module implementing the twofish encryption algorithm in Perl. It has
582     mostly been superceded by the Crypt::Twofish module. However, it supports
583     an easy and fast CBC mode natively.
584    
585     Digest-Hashcash cpan cvs-pod(Hashcash.pm,) cvs-co(Changes)
586     Perl module to generate and parse <a href="http://www.hashcash.org">hashcashes</a>.
587     Follow the link to learn more. This module is currently faster than
588     the hashcash reference library.
589    
590     EV cpan cvs-pod(EV.pm,) cvs-pod(../libev/ev.pod,libev-documentation) cvs-pod(EV/MakeMaker.pm) cvs-co(Changes)
591     A thin wrapper around <a href="/pkg/libev.html">libev</a>,
592     a high-performance event loop. Intended as a faster and less
593     buggy replacement for the Event perl module. Efficiently supports
594     very high number of timers, scalable operating system APIs such as
595     epoll, kqueue, solaris's ports, inotify, child/pid watchers and
596     much more.
597    
598     A <a href="http://lists.schmorp.de/mailman/listinfo/libev">mailing
599     list</a> for discussion and support is now available.
600    
601     EV-ADNS cpan cvs-pod(ADNS.pm,) cvs-co(Changes)
602     An asynchronous stub resolver that integrates efficiently into
603     the EV event loop. Uses adns/libadns as backend.
604    
605     Net-SNMP-EV cpan cvs-pod(EV.pm,) cvs-co(Changes)
606     An adaptor that integrates the Net-SNMP Perl module into the EV event loop.
607     Loading it suffices to make background requests in EV programs.
608    
609     libev cvs-co(README) cvs-pod(ev.pod) dist
610     A full-featured and high-performance (<a
611     href="http://libev.schmorp.de/bench.html">see benchmark</a>) event loop that
612     is loosely modelled after libevent, but without its limitations and bugs. It is
613     used, among others, in the <a href="http://savannah.gnu.org/projects/gvpe">GNU Virtual Private Ethernet</a> and
614     <a href="http://software.schmorp.de/pkg/rxvt-unicode.html">rxvt-unicode</a> packages, and in
615     the Deliantra MORPG Server and Client.
616    
617     Features include child/pid watchers, periodic timers based on
618     wallclock (absolute) time (in addition to timers using relative
619     timeouts), as well as epoll/kqueue/event ports/inotify (for file watchers) support,
620     fast timer management, time jump detection and correction, and ease-of-use.
621     <p />
622     It can be used as a libevent replacement using its emulation API or
623     directly embedded into your programs without the need for complex
624     configuration support. A full-featured and well-documented
625     <a href="EV.html">perl interface</a> is also available.
626     <p />
627     A <a href="http://lists.schmorp.de/mailman/listinfo/libev">mailing
628     list</a> for discussion and support is now available.
629    
630 root 1.22 libeio dist cvs-pod(eio.pod,) cvs-co(eio.h) cvs-co(demo.c) cvs-co(Changes)
631 root 1.17 Event-based fully asynchronous I/O library for C (used by IO::AIO).
632 root 1.20 Currently in BETA!
633 root 1.17
634 root 1.18 <p>Libeio is a full-featured asynchronous I/O library
635 root 1.17 for C, modelled in similar style and spirit as <a
636     href="http://software.schmorp.de/pkg/libev.html">libev</a>. Features
637     include: asynchronous read, write, open, close, stat, unlink, fdatasync,
638     mknod, readdir etc. (basically the full POSIX API). sendfile (native on
639 root 1.20 solaris, linux, hp-ux, freebsd, emulated everywehere else), readahead
640 root 1.17 (emulated where not available).</p>
641    
642     <p>It is fully event-library agnostic and can easily be integrated into any
643     event-library (or used standalone, even in polling mode). It is very
644     portable and relies only on POSIX threads.</p>
645    
646 root 1.21 <p>Its code, documentation, integration and portability quality is
647     currently below that of libev, but should soon be ready for use in
648     production environments.</p>
649    
650 elmex 1.1 libspf cvs-co(README)
651     Libspf is a C library that implements the <a
652     href="http://en.wikipedia.org/wiki/Sender_Policy_Framework"> Sender
653     Policy Framework</a>. It allows software to identify and reject forged
654     envelope-from addresses, a typical nuisance in e-mail spam. SPF is
655     defined in Experimental RFC 4408.
656    
657     This is not the original home of libspf, but its author (apparently)
658     has vanished for a few years now, and this place took over as a central
659     place to collect patches and possibly make releases.
660     <p />
661     James Couzens, if you read this and want to take over, feel free to
662     contact <a href="mailto:libspf@schmorp.de">me</a>, I'd be thrilled :)
663    
664     File-Rdiff cpan cvs-pod(Rdiff.pm,) cvs-co(Changes)
665     A Perl module that generates remote signatures and patches files using
666     librsync: basically your interface to librsync.
667    
668     EV-Glib cpan cvs-pod(Glib.pm,) cvs-co(Changes)
669     This perl module embeds the default Glib mainloop into the EV event loop. This makes it
670     possible to use callbacks or modules using the Glib module (e.g. Gtk2 programs) within EV programs. Just
671     loading it suffices. See the <a href="/pkg/Glib-EV.html">Glib::EV</a> module for the reverse approach.
672    
673     Glib-EV cpan cvs-pod(EV.pm,) cvs-co(Changes)
674     This perl module patches the default libglib main loop context to use the EV module. This makes
675     it possible to use callbacks or modules using the EV module within Glib and Gtk2 programs. Just
676     loading it suffices. See the <a href="/pkg/EV-Glib.html">EV::Glib</a> module for the reverse approach.
677    
678     Glib-Event cpan cvs-pod(Event.pm,) cvs-co(Changes)
679     This perl module patches the default libglib main loop context to use the Event module. This makes
680     it possible to use callbacks or modules using the Event module within Glib and Gtk2 programs. Just
681     loading it suffices.
682    
683     GPS
684     Undocumented, unreleased and unfinished-but-working interface to some GPS
685     devices in Perl.
686    
687     Linux-DVB cpan cvs-pod(DVB.pm,) cvs-co(Changes)
688     A perl module that implements a very direct interface to the Linux DVB
689     API. Also contains utility functions to decode SI data.
690    
691     Devel-FindRef cpan cvs-pod(FindRef.pm,) cvs-co(Changes)
692     A Perl module that tries to track down references to perl values. Can
693     be a great aid in debugging leak problems by showing where a value
694     is still being referenced.
695    
696     BDB cpan cvs-pod(BDB.pm,) cvs-co(Changes)
697     A Perl module implementing an interface to BerkeleyDB versions 4.4 and later.
698     Unlike the BerkeleyDB and DB_File modules, this module has a much more
699     C-like interface exposing all the features of the underlying library
700     and also executes all database changes asynchronously using a thread pool.
701    
702     IO-AIO cpan cvs-pod(AIO.pm,) cvs-co(Changes)
703     A Perl module that implements asynchronous I/O using pthreads. Apart
704     from AIO reading and writing, this module also allows asynchronous
705     <tt>stat</tt>, <tt>open</tt>, <tt>unlink</tt> (and more) calls,
706     which often are a substantial blocking problem. See also its (outdated)
707     brother <tt>Linux-AIO</tt>.
708    
709     JSON-XS cpan cvs-pod(XS.pm,) cvs-co(Changes)
710     JSON::XS implements JSON (http://www.json.org) for Perl. Unlike other
711     modules, its primary goal is to encode to syntactically correct JSON and
712     flag invalid JSON while decoding. It ensures round-trip integrity of
713     datatypes while being intuitive to use. Currently being the fastest of the
714     JSON encoders available for Perl, it supports a variety of format options,
715     such as single-line, ASCII-only or pretty-printed and can be tuned for
716     speed or memory usage. It comes with a wealth of documentation describing
717     usage and implementation details.
718    
719 root 1.31 Games-Go-SimpleBoard cpan cvs-pod(SimpleBoard.pm,) cvs-co(Changes)
720     A Perl module representing a go board.
721    
722     This Perl module represents a Go game. It can check for valid moves,
723     capture stones, stores move history and can represent a variety of
724     additional annotations (circles, labels, grayed-out stones etc.).
725    
726     Gtk2-GoBoard cpan cvs-pod(GoBoard.pm,) cvs-co(Changes)
727     A Perl module implementing a go board widget.
728    
729     This Perl module implements a beautiful go board (see <a
730     href="http://data.plan9.de/kgsuemel.jpg">example</a>), implemented as a
731     Gtk2 widget.
732    
733 elmex 1.1 Linux-AIO cpan cvs-pod(AIO.pm,) cvs-co(Changes)
734     A Perl module that implements asynchronous I/O using <tt>clone</tt>
735     on Linux. Apart from AIO reading and writing, this module also allows
736     asynchronous <tt>stat</tt>, <tt>open</tt> and <tt>close</tt> (and more)
737     calls, which often are a substantial problem. See also its (newer) brother
738     <tt>IO-AIO</tt>.
739    
740     Linux-Inotify2 cpan cvs-pod(Inotify2.pm,) cvs-co(Changes)
741     A better/less buggy/more portable interface to the Linux Inotify
742     subsystem then what Linux::Inotify has to offer. Inotify lets you receive
743     file change, create, move etc. events for directories in files in a more
744     scalable fashion than dnotify, the older mechanism.
745    
746     Linux-NBD cpan cvs-pod(lib/Linux/NBD.pm) cvs-pod(lib/Linux/NBD/Client.pm) cvs-pod(lib/Linux/NBD/Server.pm) cvs-co(Changes)
747     A Perl module that helps implementing netblock block device servers and
748     set up NBD instances. A sample application allowing you to mount most CD
749     images is included.
750    
751     Mozilla-Plugin
752     Undocumented, unreleased and unfinished-but-somewhat-working Perl plug-in
753     for Mozilla (Netscape, Opera, IE...), that allows embedding Tk, Gtk etc.
754     plugins directly in the browser.
755    
756     Net-FCP cpan cvs-pod(FCP.pm,) cvs-co(Changes)
757     Perl module implementing the <a href="http://www.freenetproject.org">Freenet</a>
758     client protocol, including client-side Metadata handling and CHK Key generation.
759     Includes a mass downloader (similar to fuqid) as sample application.
760    
761     Net-Whois-IP
762     Undocumented, unreleased and unfinished-but-somewhat-working Perl module
763     that tries to find the corresponding whois entry for a given IP, by querying
764     various registries.
765    
766     OpenSSL
767     Undocumented, unreleased and unfinished-but-somewhat-working Perl module
768     interfacing to libssl.
769    
770     PDL-Audio cpan cvs-pod(audio.pd,) cvs-co(Changes)
771     Perl module extending PDL with all sorts of audio functions for generating, analyzing,
772     loading and saving sounds. Ever so popular is the "birds" demo script :)
773    
774     Tree-M cpan
775     Perl interface to the broken M-Tree library by these italian guys...
776    
777     Video-Capture-V4l cpan cvs-co(README) cvs-co(Changes)
778     Full-featured interface to Video for Linux, including real-time grabbing
779     and jpeg compression, VPS etc. decoding and many sample scripts that
780     facilitate automatica sender search and detection, EPG decoding and
781     viewing and video grabbing.
782    
783     XML-DB
784     Undocumented, unreleased and unfinished Perl module implementing an "XML
785     database", i.e. a tree-based database, on top of a conventional SQL
786     database.
787    
788     basex
789     Very old, very portable ANSI-C program that implements something
790     that is similar to yencode. yencode is more "standard", so don't use this.
791    
792     dinfo
793     Undocumented and working tools to extract the data from the D-Info CD.
794    
795     syncmail
796     Unfinished, undocumented and not working.
797    
798     thttpd
799     A personally hacked version of thttpd, suitable for lots of file
800     transfers (normal thttpd has problems with this).
801    
802     wvsniff
803     Undocumented but nicely working wavelan sniffer that I wrote for use
804     with my cisco aironet card. If you get it working, praise yourself.
805    
806     ermyth cvs-pod(doc/poddoc/documentation.pod) cvs-co(Changes)
807     This is a fork of Atheme IRC Services.
808    
809     Ermyth IRC Services is a set of Services for IRC networks that allows
810     users to manage their channels in a secure and efficient way and
811     allows operators to manage various things about their networks.
812     Ermyth has been ported to C++ and goes its way using modern concepts
813     and the object oriented paradigm.
814    
815     dhcpping cvs-pod(dhcping.pod,)
816     A version of dhcpping enhanced by <a href="mailto:marco@nethype.de">Marco Maisenhelder</a>
817     to support passing dhcp options. Intended to test dhcp server implementations.
818    
819 elmex 1.5 Object-Event cpan-elmex git-pod(lib/Object/Event.pm,) git-co(Changes)
820 elmex 1.2 A simple event callback API for Perl.
821    
822     This is just a very simple event callback registration and call API
823 elmex 1.33 which new Perl classes can inherit. It's mainly used by AnyEvent::XMPP.
824 elmex 1.2
825 elmex 1.33 psycpp git
826 elmex 1.2 A project that was aimed to implement a PSYC server in C++.
827    
828     This is a mostly abandoned project at the moment, however, the repository
829     contains interesting C++ code that might be useful to someone, especially
830     the C++ JSON implementation might be of interest. The project is mostly
831     dead at the moment though...
832 elmex 1.12
833 elmex 1.33 GT.M git-co(README)
834 root 1.32 GT.M Database
835    
836     <a href="http://sourceforge.net/projects/fis-gtm/">GT.M</a>
837     is a a vetted, industrial strength, transaction
838     processing application platform consisting of a
839     database engine optimized for high TP throughput and
840     a compiler for the M (aka MUMPS) programming language.
841    
842     fcrackzip cvs-co(fcrackzip.html)
843     <b>fcrackzip</b> is a zip password cracker, similar to fzc, zipcrack and others.
844    
845     <h3>Why, the hell, another zip cracker?</h3>
846    
847     Naturally, programs are born out of an actual need. The situation with
848     fcrackzip was no different... I'm not using zip very much, but recently
849     I needed a password cracker. "Sure", I thought, "there are hundreds of
850     them out there, I'll just gonna get one!". This wasn't so easy, in fact,
851     none of the zipcrackers I found were able to find the passwords, either
852     they didn't accept more than one zipfile, were awfully slow, or didn't do
853     brute force attacks (which I needed). The worst thing was: no source!.
854    
855     <h3>Why is <i>no source</i> such a bad thing?</h3>
856    
857     [insert big chapter about the free software spirit here ;)], anyway
858     people will never learn... You will find reasons why it's much better to
859     provide source to your programs here, at opensource.org, and here, at the
860     Free Software Foundation. Now, what are the features of fcrackzip?
861    
862     <ul><li>
863     <p>FREE</p>
864    
865     <p>It doesn't cost anything, it will run on many architectures, and
866     the source is freely available, so you can customise it to your
867     needs. If you make improvements, don't hesitate to mail them to me,
868     and I will include them in fcrackzip!</p>
869    
870     <p>One goal of fcrackzip was to provide a free but still fast
871     zipcracker, so that other people can improve and contribute it
872     further, in an open developement style.</p>
873    
874     <p>Other programs, like fzc, come not only without source, but the
875     executable is even encrypted, so improving it or customizing it is
876     difficult at best. (Maybe the programmers of other crackers don't
877     want that people see how crappy their code actually is? Nobody
878     knows for sure, but I see no other reason for this strange, but
879     common, behaviour)</p>
880    
881     </li><li>
882     <p>FAST</p>
883    
884     <p>On my old machine (a pentium-90), the portable C version is 12%
885     slower than fzc, the fastest cracker I could find. Small parts of
886     fcrackzip have been converted to x86 assembly, so it performs a bit
887     faster (around 4%) than fzc now, on the same hardware (note: this
888     is highly os/compiler dependent). Since the author of fzc claims
889     that it is written fully in assembler, further improvements might
890     well be possible. Incidently, on my new P-II machine, fcrackzip is
891     almost twice as fast as fzc ;)</p>
892    
893     </li><li>
894     <p>PORTABLE</p>
895    
896     <p>fcrackzip was written in ISO-C, and should run on most platforms,
897     even 64 bit ones (maybe after some tweaking). I'll be glad to hear
898     about portability problems so I can fix them.</p>
899    
900     </li><li>
901     <p>FEATUREFUL</p>
902    
903     <p>fcrackzip will, at some later stage at least, support many more
904     useful operation modes than other crackers. It already supports
905     multiple zip files with multiple files. Remember that the code is
906     only a few hours old!</p>
907    
908     <p>However, since version 0.2.0 fcrackzip also includes a mode to
909     brute force cpmask'ed images, something no other program (that I
910     know of) can do, so at least there is one feature other crackers
911     don't have.</p>
912    
913     <p>And you can always implement your own modes.</p>
914    
915     </li></ul>
916    
917     <h3>Caveat, Imperator!</h3>
918    
919     <p>Naturally, there are also some drawbacks. At the moment, fcrackzip
920     is a bit slower than necessary, and lacks some important (or nice)
921     features, like automatic unzip-testing and others. On the other hand,
922     fcrackzip-0.0.1 was hacked together in under ten hours, and you can
923     always modify the source (and send me patches!!!) (I hope I've made it
924     clear now ;)</p>
925 root 1.37
926     lsys cvs-co(README) cvs-co(NEWS)
927     lsys is a program that interprets lindenmeyer-systems.
928    
929     <p>lsys is a full-featured program that understands most of the syntax
930     of the original l-systems language, which is far more complex and
931     powerful than most available l-system interpreters.</p>
932    
933     <p>See <a href="http://www.goof.com/pcg/marc/lsys.html">the original homepage</a>
934     for more explanations and some images.