Initial public release of WebPerl

master
Hauke D 7 years ago
commit 8733c25cd3

6
.gitignore vendored

@ -0,0 +1,6 @@
/*.zip
/work/
/emperl5/
/web/emperl.js
/web/emperl.wasm
/web/emperl.data

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NAME
perlartistic - the Perl Artistic License
SYNOPSIS
You can refer to this document in Pod via "L<perlartistic>"
Or you can see this document by entering "perldoc perlartistic"
DESCRIPTION
Perl is free software; you can redistribute it and/or modify it under
the terms of either:
a) the GNU General Public License as published by the Free
Software Foundation; either version 1, or (at your option) any
later version, or
b) the "Artistic License" which comes with this Kit.
This is "The Artistic License". It's here so that modules, programs,
etc., that want to declare this as their distribution license can link
to it.
For the GNU General Public License, see perlgpl.
The "Artistic License"
Preamble
The intent of this document is to state the conditions under which a
Package may be copied, such that the Copyright Holder maintains some
semblance of artistic control over the development of the package, while
giving the users of the package the right to use and distribute the
Package in a more-or-less customary fashion, plus the right to make
reasonable modifications.
Definitions
"Package"
refers to the collection of files distributed by the Copyright
Holder, and derivatives of that collection of files created through
textual modification.
"Standard Version"
refers to such a Package if it has not been modified, or has been
modified in accordance with the wishes of the Copyright Holder as
specified below.
"Copyright Holder"
is whoever is named in the copyright or copyrights for the package.
"You"
is you, if you're thinking about copying or distributing this
Package.
"Reasonable copying fee"
is whatever you can justify on the basis of media cost, duplication
charges, time of people involved, and so on. (You will not be
required to justify it to the Copyright Holder, but only to the
computing community at large as a market that must bear the fee.)
"Freely Available"
means that no fee is charged for the item itself, though there may
be fees involved in handling the item. It also means that recipients
of the item may redistribute it under the same conditions they
received it.
Conditions
1. You may make and give away verbatim copies of the source form of the
Standard Version of this Package without restriction, provided that
you duplicate all of the original copyright notices and associated
disclaimers.
2. You may apply bug fixes, portability fixes and other modifications
derived from the Public Domain or from the Copyright Holder. A
Package modified in such a way shall still be considered the
Standard Version.
3. You may otherwise modify your copy of this Package in any way,
provided that you insert a prominent notice in each changed file
stating how and when you changed that file, and provided that you do
at least ONE of the following:
a) place your modifications in the Public Domain or otherwise make
them Freely Available, such as by posting said modifications to
Usenet or an equivalent medium, or placing the modifications on
a major archive site such as uunet.uu.net, or by allowing the
Copyright Holder to include your modifications in the Standard
Version of the Package.
b) use the modified Package only within your corporation or
organization.
c) rename any non-standard executables so the names do not conflict
with standard executables, which must also be provided, and
provide a separate manual page for each non-standard executable
that clearly documents how it differs from the Standard Version.
d) make other distribution arrangements with the Copyright Holder.
4. You may distribute the programs of this Package in object code or
executable form, provided that you do at least ONE of the following:
a) distribute a Standard Version of the executables and library
files, together with instructions (in the manual page or
equivalent) on where to get the Standard Version.
b) accompany the distribution with the machine-readable source of
the Package with your modifications.
c) give non-standard executables non-standard names, and clearly
document the differences in manual pages (or equivalent),
together with instructions on where to get the Standard Version.
d) make other distribution arrangements with the Copyright Holder.
5. You may charge a reasonable copying fee for any distribution of this
Package. You may charge any fee you choose for support of this
Package. You may not charge a fee for this Package itself. However,
you may distribute this Package in aggregate with other (possibly
commercial) programs as part of a larger (possibly commercial)
software distribution provided that you do not advertise this
Package as a product of your own. You may embed this Package's
interpreter within an executable of yours (by linking); this shall
be construed as a mere form of aggregation, provided that the
complete Standard Version of the interpreter is so embedded.
6. The scripts and library files supplied as input to or produced as
output from the programs of this Package do not automatically fall
under the copyright of this Package, but belong to whoever generated
them, and may be sold commercially, and may be aggregated with this
Package. If such scripts or library files are aggregated with this
Package via the so-called "undump" or "unexec" methods of producing
a binary executable image, then distribution of such an image shall
neither be construed as a distribution of this Package nor shall it
fall under the restrictions of Paragraphs 3 and 4, provided that you
do not represent such an executable image as a Standard Version of
this Package.
7. C subroutines (or comparably compiled subroutines in other
languages) supplied by you and linked into this Package in order to
emulate subroutines and variables of the language defined by this
Package shall not be considered part of this Package, but are the
equivalent of input as in Paragraph 6, provided these subroutines do
not change the language in any way that would cause it to fail the
regression tests for the language.
8. Aggregation of this Package with a commercial distribution is always
permitted provided that the use of this Package is embedded; that
is, when no overt attempt is made to make this Package's interfaces
visible to the end user of the commercial distribution. Such use
shall not be construed as a distribution of this Package.
9. The name of the Copyright Holder may not be used to endorse or
promote products derived from this software without specific prior
written permission.
10. THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
The End

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NAME
perlgpl - the GNU General Public License, version 1
SYNOPSIS
You can refer to this document in Pod via "L<perlgpl>"
Or you can see this document by entering "perldoc perlgpl"
DESCRIPTION
Perl is free software; you can redistribute it and/or modify it under
the terms of either:
a) the GNU General Public License as published by the Free
Software Foundation; either version 1, or (at your option) any
later version, or
b) the "Artistic License" which comes with this Kit.
This is the "GNU General Public License, version 1". It's here so that
modules, programs, etc., that want to declare this as their distribution
license can link to it.
For the Perl Artistic License, see perlartistic.
GNU GENERAL PUBLIC LICENSE
GNU GENERAL PUBLIC LICENSE
Version 1, February 1989
Copyright (C) 1989 Free Software Foundation, Inc.
51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The license agreements of most software companies try to keep users
at the mercy of those companies. By contrast, our General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. The
General Public License applies to the Free Software Foundation's
software and to any other program whose authors commit to using it.
You can use it for your programs, too.
When we speak of free software, we are referring to freedom, not
price. Specifically, the General Public License is designed to make
sure that you have the freedom to give away or sell copies of free
software, that you receive source code or can get it if you want it,
that you can change the software or use pieces of it in new free
programs; and that you know you can do these things.
To protect your rights, we need to make restrictions that forbid
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities for you if you
distribute copies of the software, or if you modify it.
For example, if you distribute copies of a such a program, whether
gratis or for a fee, you must give the recipients all the rights that
you have. You must make sure that they, too, receive or can get the
source code. And you must tell them their rights.
We protect your rights with two steps: (1) copyright the software,
and (2) offer you this license which gives you legal permission to
copy, distribute and/or modify the software.
Also, for each author's protection and ours, we want to make certain
that everyone understands that there is no warranty for this free
software. If the software is modified by someone else and passed on,
we want its recipients to know that what they have is not the original,
so that any problems introduced by others will not reflect on the
original authors' reputations.
The precise terms and conditions for copying, distribution and
modification follow.
GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License Agreement applies to any program or other work which
contains a notice placed by the copyright holder saying it may be
distributed under the terms of this General Public License. The
"Program", below, refers to any such program or work, and a "work based
on the Program" means either the Program or any work containing the
Program or a portion of it, either verbatim or with modifications.
Each licensee is addressed as "you".
1. You may copy and distribute verbatim copies of the Program's
source code as you receive it, in any medium, provided that you
conspicuously and appropriately publish on each copy an appropriate
copyright notice and disclaimer of warranty; keep intact all the
notices that refer to this General Public License and to the absence of
any warranty; and give any other recipients of the Program a copy of
this General Public License along with the Program. You may charge a
fee for the physical act of transferring a copy.
2. You may modify your copy or copies of the Program or any portion
of it, and copy and distribute such modifications under the terms of
Paragraph 1 above, provided that you also do the following:
a) cause the modified files to carry prominent notices stating that
you changed the files and the date of any change; and
b) cause the whole of any work that you distribute or publish, that
in whole or in part contains the Program or any part thereof,
either with or without modifications, to be licensed at no charge
to all third parties under the terms of this General Public License
(except that you may choose to grant warranty protection to some or
all third parties, at your option).
c) If the modified program normally reads commands interactively
when run, you must cause it, when started running for such
interactive use in the simplest and most usual way, to print or
display an announcement including an appropriate copyright notice
and a notice that there is no warranty (or else, saying that you
provide a warranty) and that users may redistribute the program
under these conditions, and telling the user how to view a copy of
this General Public License.
d) You may charge a fee for the physical act of transferring a
copy, and you may at your option offer warranty protection in
exchange for a fee.
Mere aggregation of another independent work with the Program (or its
derivative) on a volume of a storage or distribution medium does not
bring the other work under the scope of these terms.
3. You may copy and distribute the Program (or a portion or
derivative of it, under Paragraph 2) in object code or executable form
under the terms of Paragraphs 1 and 2 above provided that you also do
one of the following:
a) accompany it with the complete corresponding machine-readable
source code, which must be distributed under the terms of
Paragraphs 1 and 2 above; or,
b) accompany it with a written offer, valid for at least three
years, to give any third party free (except for a nominal charge
for the cost of distribution) a complete machine-readable copy of
the corresponding source code, to be distributed under the terms of
Paragraphs 1 and 2 above; or,
c) accompany it with the information you received as to where the
corresponding source code may be obtained. (This alternative is
allowed only for noncommercial distribution and only if you
received the program in object code or executable form alone.)
Source code for a work means the preferred form of the work for making
modifications to it. For an executable file, complete source code
means all the source code for all modules it contains; but, as a
special exception, it need not include source code for modules which
are standard libraries that accompany the operating system on which the
executable file runs, or for standard header files or definitions files
that accompany that operating system.
4. You may not copy, modify, sublicense, distribute or transfer the
Program except as expressly provided under this General Public License.
Any attempt otherwise to copy, modify, sublicense, distribute or
transfer the Program is void, and will automatically terminate your
rights to use the Program under this License. However, parties who
have received copies, or rights to use copies, from you under this
General Public License will not have their licenses terminated so long
as such parties remain in full compliance.
5. By copying, distributing or modifying the Program (or any work
based on the Program) you indicate your acceptance of this license to
do so, and all its terms and conditions.
6. Each time you redistribute the Program (or any work based on the
Program), the recipient automatically receives a license from the
original licensor to copy, distribute or modify the Program subject to
these terms and conditions. You may not impose any further
restrictions on the recipients' exercise of the rights granted herein.
7. The Free Software Foundation may publish revised and/or new
versions of the General Public License from time to time. Such new
versions will be similar in spirit to the present version, but may
differ in detail to address new problems or concerns.
Each version is given a distinguishing version number. If the Program
specifies a version number of the license which applies to it and "any
later version", you have the option of following the terms and
conditions either of that version or of any later version published by
the Free Software Foundation. If the Program does not specify a
version number of the license, you may choose any version ever
published by the Free Software Foundation.
8. If you wish to incorporate parts of the Program into other free
programs whose distribution conditions are different, write to the
author to ask for permission. For software which is copyrighted by the
Free Software Foundation, write to the Free Software Foundation; we
sometimes make exceptions for this. Our decision will be guided by the
two goals of preserving the free status of all derivatives of our free
software and of promoting the sharing and reuse of software generally.
NO WARRANTY
9. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO
WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND,
EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS
WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
10. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU
FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF
SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES.
END OF TERMS AND CONDITIONS
Appendix: How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to humanity, the best way to achieve this is to make it
free software which everyone can redistribute and change under these
terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it
does.>
Copyright (C) 19yy <name of author>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 1, or (at
your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA
02110-1301 USA
Also add information on how to contact you by electronic and paper
mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) 19xx name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type
'show w'. This is free software, and you are welcome to
redistribute it under certain conditions; type 'show c' for
details.
The hypothetical commands 'show w' and 'show c' should show the
appropriate parts of the General Public License. Of course, the
commands you use may be called something other than 'show w' and 'show
c'; they could even be mouse-clicks or menu items--whatever suits your
program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the
program 'Gnomovision' (a program to direct compilers to make passes
at assemblers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
That's all there is to it!

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WebPerl
=======
This is the main WebPerl repository.
Please see the documentation on the main site **<http://webperl.zero-g.net>**:
\[ [Home](https://webperl.zero-g.net/index.html) -
[Using WebPerl](https://webperl.zero-g.net/using.html) -
[Building WebPerl](https://webperl.zero-g.net/building.html) -
[Wiki](https://github.com/haukex/webperl/wiki) -
[GitHub](https://github.com/haukex/webperl) -
[Notes](https://webperl.zero-g.net/notes.html) -
[Legal](https://webperl.zero-g.net/legal.html) \]
Author, Copyright, and License
==============================
**WebPerl <http://webperl.zero-g.net>**
Copyright (c) 2018 Hauke Daempfling (haukex@zero-g.net)
at the Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB),
Berlin, Germany, <http://www.igb-berlin.de>
This program is free software; you can redistribute it and/or modify
it under the same terms as Perl 5 itself: either the GNU General Public
License as published by the Free Software Foundation (either version 1,
or, at your option, any later version), or the "Artistic License" which
comes with Perl 5.
This program is distributed in the hope that it will be useful, but
**WITHOUT ANY WARRANTY**; without even the implied warranty of
**MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE**.
See the licenses for details.
You should have received a copy of the licenses along with this program.
If not, see <http://perldoc.perl.org/index-licence.html>.

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WebPerl TODOs
=============
<http://webperl.zero-g.net>
1. Documentation (Website)
- Using WebPerl
- the user must explicitly "unregister" anonymous Perl subs (or show alternatives) to prevent %CodeTable from growing too large
- the user shouldn't mess with the symbol table (delete subs, redefine them, etc.)
- <http://kripken.github.io/emscripten-site/docs/compiling/Deploying-Pages.html>
- Building WebPerl
- test out perl -Mlazy to install all the deps (and if it works well, document)
2. Testing
- Continue work on `WebPerl.t`
- More tests for Unicode support (Perl/JS interface, Perl.eval(), plus Emscripten's virtual FS)
- I should focus on getting the tests running in the browser instead of node.js
- How to package tests? How does `make test` find&handle all the various modules' `t`s?
- How to best disable individual tests that we know won't work? (qx etc.)
- How to handle the many tests that call an external Perl?
- patching t/test.pl's runperl() seems easiest at the moment, and we can use the iframe method from the IDE
3. Misc
- Test if a CDN would work
See also: "TODO" tags in code (use `findtodo.sh`)

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#!/usr/bin/env perl
use warnings;
use 5.026;
=head1 SYNOPSIS
Build script for WebPerl; see L<http://webperl.zero-g.net>.
build.pl [OPTIONS]
OPTIONS:
--showconf - Show configuration
--reconfig - Force regeneration config.sh
--forceext - Force fetching of extensions
--applyconfig - Apply any changes to config.sh (sh Configure -S)
--remakeout - Force rebuild of the output directory
--forceemperl - Force rebuild of emperl.js
--dist=FN - Create a distro file "FN.zip"
--verbose - Be more verbose
=head1 Author, Copyright, and License
B<< WebPerl L<http://webperl.zero-g.net> >>
Copyright (c) 2018 Hauke Daempfling (haukex@zero-g.net)
at the Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB),
Berlin, Germany, L<http://www.igb-berlin.de>
This program is free software; you can redistribute it and/or modify
it under the same terms as Perl 5 itself: either the GNU General Public
License as published by the Free Software Foundation (either version 1,
or, at your option, any later version), or the "Artistic License" which
comes with Perl 5.
This program is distributed in the hope that it will be useful, but
B<WITHOUT ANY WARRANTY>; without even the implied warranty of
B<MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE>.
See the licenses for details.
You should have received a copy of the licenses along with this program.
If not, see L<http://perldoc.perl.org/index-licence.html>.
=cut
use Getopt::Long qw/ HelpMessage :config posix_default gnu_compat bundling auto_version auto_help /;
use Hash::Util qw/lock_hash/;
use Data::Dump;
use Path::Class qw/file dir/;
use IPC::Run3::Shell {show_cmd=>1}, qw/ :FATAL :run git make emmake /;
use ExtUtils::MakeMaker qw/prompt/;
use FindBin ();
use Carp;
use Cwd qw/getcwd abs_path/;
use URI ();
use IO::Socket::SSL 1.56 (); # for HTTP::Tiny
use Net::SSLeay 1.49 (); # for HTTP::Tiny
use HTTP::Tiny ();
use Cpanel::JSON::XS qw/decode_json/;
use File::Temp qw/tempdir/;
use Archive::Tar ();
use File::Copy::Recursive qw/dirmove/;
use File::Replace qw/replace3/;
use Pod::Strip ();
use Archive::Zip qw/AZ_OK/;
GetOptions(\my %opts,'showconf','reconfig','forceext','applyconfig',
'forceemperl','remakeout','dist=s','verbose')
or HelpMessage(-exitval=>255);
# check that emperl_config.sh has been run
die "Please run '. emperl_config.sh' to set up the environment variables.\n"
unless $ENV{EMPERL_PERLVER};
die "Please edit 'emperl_config.sh' to point it to the correct location of 'emsdk_env.sh'\n"
unless $ENV{EMSCRIPTEN} && -d $ENV{EMSCRIPTEN} && $ENV{EMSDK} && -d $ENV{EMSDK};
# copy over config variables from environment
my %C = map {$_=>$ENV{'EMPERL_'.$_}} qw/ EXTENSIONS
HOSTPERLDIR OUTPUTDIR DOWNLOADDIR PERLSRCDIR
PREFIX PERLVER
PERL_REPO PERL_BRANCH CLOBBER_BRANCH /;
$C{$_} = dir($C{$_}) for qw/ HOSTPERLDIR OUTPUTDIR DOWNLOADDIR PERLSRCDIR /;
$C{EXTENSIONS} = [ split ' ', $C{EXTENSIONS} ];
lock_hash %C; # typo prevention
dd \%C if $opts{showconf};
my $VERBOSE = $opts{verbose}?1:0;
my $needs_reconfig = !!$opts{reconfig};
# ##### ##### ##### Step: Patch Emscripten ##### ##### #####
{
my $d = pushd( dir($ENV{EMSCRIPTEN}, 'src') );
# Emscripten's fork() (and system()) stubs return EAGAIN, meaning "Resource temporarily unavailable".
# So perl will wait 5 seconds and try again, which is not helpful to us, since Emscripten doesn't support those functions at all.
# This patch fixes that on the Emscripten side, so the stubs return ENOTSUP.
#TODO Later: we should probably verify the Emscripten version too, and in the future we may need different patches for different versions
if ( try_patch_file( file($FindBin::Bin,'emscripten_1.38.10_eagain.patch') ) ) {
say STDERR "# Emscripten was newly patched, forcing a rebuild";
# not sure if the following is needed, but playing it safe:
run 'emcc', '--clear-cache'; # force Emscripten to rebuild libs (takes a bit of time)
$needs_reconfig=1;
}
}
# ##### ##### ##### Step: Check out Perl sources ##### ##### #####
if (!-e $C{PERLSRCDIR}) {
say STDERR "# $C{PERLSRCDIR} doesn't exist, checking out";
my $d = pushd($C{PERLSRCDIR}->parent);
git 'clone', '--branch', $C{PERL_BRANCH}, $C{PERL_REPO}, $C{PERLSRCDIR}->basename;
die "something went wrong with git clone" unless -d $C{PERLSRCDIR};
$needs_reconfig=1;
}
{
my $d = pushd($C{PERLSRCDIR});
git 'fetch';
my $myhead = git 'log', '-1', '--format=%h', $C{PERL_BRANCH}, {chomp=>1,show_cmd=>$VERBOSE};
my $remhead = git 'log', '-1', '--format=%h', 'origin/'.$C{PERL_BRANCH}, {chomp=>1,show_cmd=>$VERBOSE};
say STDERR "# Local branch is at $myhead, remote is $remhead";
if ($myhead ne $remhead) {
if (prompt("Would you like to update? WARNING: Unsaved local changes may be lost! [Yn]","y")=~/^\s*y/i) {
eval {
if ($C{CLOBBER_BRANCH}) {
say "WARNING: I am about to clobber the branch $C{PERL_BRANCH} in $C{PERLSRCDIR}!";
verify_perlsrc_modify(1);
git 'checkout', '-q', $C{PERLVER};
git 'branch', '-D', $C{PERL_BRANCH};
git 'branch', $C{PERL_BRANCH}, 'origin/'.$C{PERL_BRANCH};
git 'checkout', $C{PERL_BRANCH};
}
else {
git 'checkout', $C{PERL_BRANCH};
git 'pull';
}
1 } or die "$@\nA git step failed - perhaps you have uncommited changes in $C{PERLSRCDIR}?\n";
$needs_reconfig=1;
}
}
my $tags = git 'tag', '--list', {show_cmd=>$VERBOSE};
die "could not find tag '$C{PERLVER}', is this the right repository?"
unless $tags=~/^\Q$C{PERLVER}\E$/m;
my $branches = git 'branch', '--list', {show_cmd=>$VERBOSE};
die "could not find branch '$C{PERL_BRANCH}', is this the right repository?"
unless $branches=~/^\*?\s*\b\Q$C{PERL_BRANCH}\E$/m;
say STDERR "# Found tag '$C{PERLVER}' and branch '$C{PERL_BRANCH}' in $C{PERLSRCDIR}";
}
sub verify_perlsrc_modify {
my $force = shift;
state $already_prompted = 0;
$already_prompted=0 if $force;
return if $already_prompted;
if (prompt("WARNING: You will lose any changes to the working copy and index in $C{PERLSRCDIR}!\n"
." Continue? [yN]","n")!~/^\s*y/i) {
say STDERR "Aborting.";
exit 1;
} else { $already_prompted = 1 }
}
# ##### ##### ##### Step: Check/build hostperl ##### ##### #####
sub verify_hostperl {
my $miniperl = $C{HOSTPERLDIR}->file('miniperl');
return 0 unless -e $miniperl;
my $miniperlver = run $miniperl, '-e', 'print $^V', {show_cmd=>$VERBOSE};
say STDERR "# Detected hostperl / miniperl '$miniperlver' (need '$C{PERLVER}')";
my $perl = $C{HOSTPERLDIR}->file('perl');
if (-e $perl) { # currently just an optional check
my $perlver = run $perl, '-e', 'print $^V', {show_cmd=>$VERBOSE};
say STDERR "# Detected hostperl / perl '$perlver'";
die "miniperl ('$miniperlver') / perl ('$perlver') version mismatch"
unless $miniperlver eq $perlver;
}
return $miniperlver eq $C{PERLVER};
}
if (!verify_hostperl()) {
say STDERR "# A rebuild of hostperl is required";
$C{HOSTPERLDIR}->rmtree(1);
$C{HOSTPERLDIR}->mkpath(1);
verify_perlsrc_modify();
{
my $d = pushd($C{PERLSRCDIR});
git 'checkout', '-qf', $C{PERLVER};
git 'clean', '-dxf';
}
{
my $d = pushd($C{HOSTPERLDIR});
run {stdin=>\undef}, 'sh', file($C{PERLSRCDIR},'Configure'),
'-des', '-Dusedevel', '-Dmksymlinks';
make 'miniperl';
make 'minitest';
make 'generate_uudmap';
#TODO Later: do we really need the following full perl build as well? (good for testing?)
# if we do, make the test for "perl" in verify_hostperl required, not optional
make 'perl';
make 'test';
}
$needs_reconfig=1;
die "something went wrong with hostperl" unless verify_hostperl();
}
# ##### ##### ##### Step: Prep "emperl" sources (for next steps) ##### ##### #####
my $config_sh = $C{PERLSRCDIR}->file('config.sh');
if (!-e $config_sh) {
say STDERR "# config.sh NOT found, forcing a reconfig";
$needs_reconfig=1 }
else { say STDERR "# config.sh found" }
if (-e $config_sh) {
my $our_mtime = file($FindBin::Bin, 'emperl_config.sh')->stat->mtime;
my $perl_mtime = $config_sh->stat->mtime;
if ($perl_mtime>$our_mtime)
{ say STDERR "# config.sh is newer than emperl_config.sh" }
else {
say STDERR "# config.sh is OLDER than emperl_config.sh, forcing a reconfig";
$needs_reconfig=1 }
}
if ($needs_reconfig) {
exit 1 if prompt("Looks like we need a full reconfig. Continue? [Yn]","y")!~/^\s*y/i;
verify_perlsrc_modify();
my $d = pushd($C{PERLSRCDIR});
# Note: could get the current branch with: git 'rev-parse', '--abbrev-ref', 'HEAD', {chomp=>1};
# but since we're clobbering anyway...
git 'checkout', '-qf', $C{PERL_BRANCH};
git 'clean', '-dxf';
}
# ##### ##### ##### Step: Add custom extensions ##### ##### #####
if ($needs_reconfig || $opts{forceext}) {
my $http = HTTP::Tiny->new;
$C{DOWNLOADDIR}->mkpath(1);
for my $modname ($C{EXTENSIONS}->@*) {
my $apiuri = URI->new('https://fastapi.metacpan.org/v1/download_url');
$apiuri->path_segments( $apiuri->path_segments, $modname );
say STDERR "# Fetching $apiuri...";
my $resp1 = $http->get($apiuri);
die "$apiuri: $resp1->{status} $resp1->{reason}\n" unless $resp1->{success};
my $apiresp = decode_json($resp1->{content});
my $version = $apiresp->{version};
my $dluri = URI->new($apiresp->{download_url});
my $file = $C{DOWNLOADDIR}->file( ($dluri->path_segments)[-1] );
die "I don't know what to do with this file type (yet): $file"
unless $file->basename=~/(?:\.tar\.gz|\.tgz)$/i;
say STDERR "# Fetching $dluri into $file...";
my $resp2 = $http->mirror($dluri, $file);
die "$dluri: $resp2->{status} $resp2->{reason}\n" unless $resp2->{success};
say STDERR "# $dluri: $resp2->{status} $resp2->{reason}";
my $tempd = dir( tempdir(DIR=>$C{DOWNLOADDIR}, CLEANUP => 1) );
{
my $d = pushd($tempd);
my @files = Archive::Tar->new->extract_archive($file, Archive::Tar::COMPRESS_GZIP);
say STDERR "# Extracted ",0+@files," files into $tempd";
}
my @dirs = $tempd->children;
die "Can't handle the directory structure of this file (yet): $file"
unless @dirs==1 && $dirs[0]->is_dir;
my ($dirname) = $dirs[0]->basename =~ /^(.+)-\Q$version\E$/g
or die "Failed to parse ".$dirs[0]->basename;
my $targdir = $C{PERLSRCDIR}->subdir( 'ext', $dirname );
my $domove = 1;
if (-e $targdir) {
if ( prompt("WARNING: $targdir exists, Keep or Delete? [Kd]","k")=~/^\s*d/i )
{ $targdir->rmtree(1) }
else { $domove=0 }
}
if ($domove) {
say STDERR "# Moving $dirs[0] to $targdir";
dirmove($dirs[0], $targdir)
or die "move failed: $!";
}
}
say STDERR "# Done setting up modules";
}
else { say STDERR "# Since we don't need a reconfig, not looking at extensions" }
# ##### ##### ##### Step: Run configure ##### ##### #####
if ($needs_reconfig) { # this means that we cleaned the source tree above
say STDERR "# Running Configure...";
my $d = pushd($C{PERLSRCDIR});
# note that we don't use -Dmksymlinks here because something in the
# Emscripten build process seems to have issues with the symlinks (?)
run {stdin=>\undef}, 'emconfigure', 'sh', 'Configure', '-des',
'-Dhintfile=emscripten';
}
elsif ($opts{applyconfig}) {
say STDERR "# Running Configure -S...";
my $d = pushd($C{PERLSRCDIR});
run {stdin=>\undef}, 'emconfigure', 'sh', 'Configure', '-S';
}
# ##### ##### ##### Step: Build perl into outputdir ##### ##### #####
my $destdir = dir($C{OUTPUTDIR},$C{PREFIX});
if ($needs_reconfig || !-e $destdir || $opts{remakeout}) {
say STDERR "# Rebuilding $destdir...";
$destdir->rmtree(1);
# make the target dir here so that nodeperl_dev_prerun.js can mount it during build
$destdir->mkpath(1);
my $d = pushd($C{PERLSRCDIR});
emmake 'make', 'perl';
# a really basic test to see if the build succeeded
my $perltest = run file($C{PERLSRCDIR},'perl'), '-e', q{print "$^O $^V"},
{chomp=>1,show_cmd=>$VERBOSE,fail_on_stderr=>1};
die "something went wrong building perl (got: '$perltest')"
unless $perltest eq 'emscripten '.$C{PERLVER};
# note that installperl requires ./perl to be executable (our Makefile patch currently takes care of that)
run $C{HOSTPERLDIR}.'/miniperl', 'installperl', '-p', '--destdir='.$C{OUTPUTDIR};
# clean out the stuff we really don't need
$destdir->subdir('bin')->rmtree(1);
$destdir->recurse( callback => sub {
my $f = shift;
return if $f->is_dir;
if ( ( $f->basename=~/\.(?:h|a|pod)$/i ) || ( $f->basename eq 'extralibs.ld' && (-s $f)==1 )
|| ( $f->basename eq '.packlist' ) ) {
print STDERR "removing $f\n";
$f->remove or die "failed to remove $f";
}
elsif ( $f->basename=~/\.(?:pm|pl)$/i && $f->basename ne 'WebPerl.pm' ) {
print STDERR "stripping POD from $f\n";
my $strip = Pod::Strip->new;
my ($infh,$outfh,$repl) = replace3($f);
$strip->output_fh($outfh);
$strip->parse_file($infh);
$repl->finish;
}
});
CLEAN_EMPTY: {
my @todel;
$destdir->recurse( callback => sub { push @todel, $_[0] if $_[0]->is_dir && !$_[0]->children } );
for my $f (@todel) {
print STDERR "removing $f\n";
$f->remove or die "failed to remove $f";
}
redo CLEAN_EMPTY if @todel;
}
# Development aides:
$destdir->subdir('dev')->mkpath(1);
# we make them hard links so that edits to WebPerl.pm don't require a full
# rebuild of the output directory (a rebuild of emperl.js is enough)
safelink( $C{PERLSRCDIR}->file('ext','WebPerl','WebPerl.t'),
$destdir->file('dev','WebPerl.t') );
safelink( $C{PERLSRCDIR}->file('ext','WebPerl','WebPerl.pm'),
$destdir->file('lib','5.28.0','wasm','WebPerl.pm') ); #TODO: should figure this directory out dynamically
say STDERR "# Done rebuilding $destdir";
}
# ##### ##### ##### Step: Build emperl.js ##### ##### #####
{
say STDERR "# Making emperl.js...";
if ($opts{forceemperl})
{ $C{PERLSRCDIR}->file('emperl.js')->remove
or die "failed to delete emperl.js" }
my $d = pushd($C{PERLSRCDIR});
emmake 'make', 'emperl.js';
say STDERR "# Done making emperl.js";
}
for my $f (qw/ emperl.js emperl.wasm emperl.data /) {
$C{PERLSRCDIR}->file($f)
->copy_to( dir($FindBin::Bin)->parent->subdir('web') )
or die "failed to copy $f: $!";
}
say STDERR "# Copied emperl.* files to web dir";
# ##### ##### ##### Step: Build distro ##### ##### #####
if (my $dist = $opts{dist}) {
my $basedir = dir($FindBin::Bin)->parent;
my $zipfn = $basedir->file("$dist.zip");
my $zip = Archive::Zip->new();
$zip->addTree($basedir->subdir('web').'', dir($dist).'');
$zip->writeToFileNamed("$zipfn") == AZ_OK or die "$zipfn write error";
say STDERR "# Wrote to $zipfn:";
my $unzip = Archive::Zip->new("$zipfn");
say "\t$_" for $unzip->memberNames;
}
# ##### ##### ##### subs ##### ##### #####
sub safelink { # like link(OLDFILE,NEWFILE) but with extra checks
my ($oldfile,$newfile) = @_;
die "not a file: $oldfile" unless -f $oldfile;
if (-e $newfile) {
die "files don't match: $oldfile vs. $newfile"
unless do { open my $fh, '<:raw', $oldfile or die "$oldfile: $!"; local $/; <$fh> }
eq do { open my $fh, '<:raw', $newfile or die "$newfile: $!"; local $/; <$fh> };
file($newfile)->remove or die "failed to remove $newfile: $!";
}
link($oldfile,$newfile)
or die "link('$oldfile','$newfile'): $!";
}
# First argument: the filename of the .patch file
# Any following arguments are additionally passed to "patch" (e.g. "-p1")
# Attempts to run "patch", will fail gracefully if the patch has already been applied.
# Dies if anything goes wrong (patch not applied cleanly, etc.).
# Returns false (0) if the patch was already applied previously, true (1) if the patch was newly applied.
sub try_patch_file {
my ($patchf,@args) = @_;
say STDERR "# Attempting to apply patch $patchf...";
run 'patch', @args, '-r-', '-sNi', $patchf, {allow_exit=>[0,1],show_cmd=>$VERBOSE};
if ($?==1<<8) {
# Slightly hackish way to test if the patch did not apply cleanly, or it's just already been applied:
# Apply the patch in reverse once, and then apply it again, if both go through without errors all is ok.
# There is probably a better way to do this, I'm just feeling a little lazy at the moment.
run 'patch', @args, '-sRi', $patchf, {show_cmd=>$VERBOSE};
run 'patch', @args, '-si', $patchf, {show_cmd=>$VERBOSE};
say STDERR "# Verified that $patchf was previously applied";
return 0;
}
elsif ($?) { die "patch $patchf \$?=$?" }
else { say STDERR "# Successfully applied patch $patchf"; return 1 }
}
# A simplified version of File::pushd that outputs debug info. TODO Later: should probably propose a patch for a debug option.
sub pushd {
if (not defined wantarray) { carp "pushd in void context"; return }
croak "bad arguments to pushd" unless @_==1 && defined $_[0];
my $targ = abs_path(shift);
croak "not a directory: $targ" unless -d $targ;
my $orig = getcwd;
if ($targ ne $orig) {
say STDERR "\$ cd $targ";
chdir $targ or croak "chdir to $targ failed: $!";
}
return bless { orig=>$orig }, 'PushedDir';
}
sub PushedDir::DESTROY {
my $self = shift;
if (getcwd ne $self->{orig}) {
say STDERR "\$ cd ".$self->{orig};
chdir $self->{orig} or croak "chdir to ".$self->{orig}." failed: $!";
}
}
__END__
#TODO Later: Fix the following (note setting d_getgrgid_r and d_getgrnam_r in the hints file didn't seem to help)
warning: unresolved symbol: getgrgid
warning: unresolved symbol: getgrnam
warning: unresolved symbol: llvm_fma_f64
warning: unresolved symbol: sigsuspend
#TODO Later: Fix the following "miniperl make_ext.pl" errors (warnings?)
./miniperl -Ilib make_ext.pl lib/auto/Encode/Byte/Byte.a MAKE="make" LIBPERL_A=libperl.a LINKTYPE=static CCCDLFLAGS=
Can't find extension Encode/Byte in any of cpan dist ext at make_ext.pl line 251.
./miniperl -Ilib make_ext.pl lib/auto/Encode/Symbol/Symbol.a MAKE="make" LIBPERL_A=libperl.a LINKTYPE=static CCCDLFLAGS=
Can't find extension Encode/Symbol in any of cpan dist ext at make_ext.pl line 251.
./miniperl -Ilib make_ext.pl lib/auto/Encode/Unicode/Unicode.a MAKE="make" LIBPERL_A=libperl.a LINKTYPE=static CCCDLFLAGS=
Can't find extension Encode/Unicode in any of cpan dist ext at make_ext.pl line 251.

@ -0,0 +1,46 @@
#!/bin/bash
# This is the configuration file for building WebPerl.
# You should edit it according to the comments below.
# Remember to reload this file after making changes! (". emperl_config.sh")
# You must edit this to point to your Emscripten SDK's emsdk_env.sh.
. $HOME/emsdk/emsdk_env.sh
# A whitespace-separated list of modules to download and add to the build.
# Note: Cpanel::JSON::XS is required for WebPerl!
export EMPERL_EXTENSIONS="Cpanel::JSON::XS Devel::StackTrace"
# Modules from the above list that have XS code need to be linked statically.
# Add them here, separated by whitespace (see also the "static_ext" variable
# in https://perl5.git.perl.org/perl.git/blob/HEAD:/Porting/Glossary ).
export EMPERL_STATIC_EXT="Cpanel/JSON/XS"
# Do not edit (this gets this script's parent directory)
BASEDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )"/.. >/dev/null && pwd )"
# Various working directories, you normally don't need to edit these
export EMPERL_PERLSRCDIR="$BASEDIR/emperl5"
export EMPERL_HOSTPERLDIR="$BASEDIR/work/hostperl"
export EMPERL_DOWNLOADDIR="$BASEDIR/work/download"
export EMPERL_OUTPUTDIR="$BASEDIR/work/outputperl"
# Don't edit the following options unless you know what you're doing!
# Note to self: In build.pl, we take advantage of the fact that on Perls >=v5.10.0, "$^V" is the same as the tag name.
export EMPERL_PERLVER="v5.28.0"
export EMPERL_PREFIX="/opt/perl"
export EMPERL_PRELOAD_FILE="$EMPERL_OUTPUTDIR$EMPERL_PREFIX@$EMPERL_PREFIX"
export EMPERL_OPTIMIZ="-O2"
export EMPERL_LINK_FLAGS="--pre-js common_preamble.js -s EXPORTED_FUNCTIONS=['_main','_emperl_end_perl','_Perl_call_sv','_Perl_call_pv','_Perl_call_method','_Perl_call_argv','_Perl_eval_pv','_Perl_eval_sv','_webperl_eval_perl'] -s EXTRA_EXPORTED_RUNTIME_METHODS=['ccall','cwrap']"
# Note: not including "-s SAFE_HEAP=1" in the debug flags because we're building to WebAssembly, which doesn't require alignment
#TODO Later: Can some of the SAFE_HEAP functionality (null pointer access I think?) be replaced by the WASM error traps?
# http://kripken.github.io/emscripten-site/docs/compiling/WebAssembly.html#binaryen-codegen-options
export EMPERL_DEBUG_FLAGS="-s ASSERTIONS=2 -s STACK_OVERFLOW_CHECK=2"
# Location and branch of the perl git repository that contains the emperl branch
export EMPERL_PERL_REPO="https://github.com/haukex/emperl5.git"
export EMPERL_PERL_BRANCH="emperl_$EMPERL_PERLVER"
# Enabling this setting causes the local emperl branch to be deleted and re-fetched from the origin.
# This is useful during development, when rewrites of the (unpublished!) git history of the branch might happen.
export EMPERL_CLOBBER_BRANCH=0

@ -0,0 +1,20 @@
--- emscripten/src/library.js 2018-08-01 18:58:49.428051969 +0200
+++ emsdk/emscripten/1.38.10/src/library.js 2018-08-01 18:58:03.288051969 +0200
@@ -250,7 +250,7 @@
// pid_t fork(void);
// http://pubs.opengroup.org/onlinepubs/000095399/functions/fork.html
// We don't support multiple processes.
- ___setErrNo(ERRNO_CODES.EAGAIN);
+ ___setErrNo(ERRNO_CODES.ENOTSUP);
return -1;
},
vfork: 'fork',
@@ -545,7 +545,7 @@
// int system(const char *command);
// http://pubs.opengroup.org/onlinepubs/000095399/functions/system.html
// Can't call external programs.
- ___setErrNo(ERRNO_CODES.EAGAIN);
+ ___setErrNo(ERRNO_CODES.ENOTSUP);
return -1;
},

@ -0,0 +1,24 @@
#!/bin/bash
set -e
# Finds and displays TODOs for the WebPerl project.
# the output can be piped into e.g. "less -R"
if [ -z ${EMPERL_PERLVER+x} ]; then
echo "Please source emperl_config.sh first"
exit 1
fi
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )"/.. >/dev/null && pwd )"
TEMPFILE="`mktemp`"
trap 'rm -f "$TEMPFILE"' EXIT
(
cd "$DIR/emperl5"
# only look at files that have been added
git diff --numstat --diff-filter=A $EMPERL_PERLVER $EMPERL_PERL_BRANCH \
| BASEDIR=$DIR perl -wMstrict -MFile::Spec::Functions=abs2rel,rel2abs -nl0 \
-e '/^\d+\s+\d+\s+(.+)$/ or die $_; -e $1 and print abs2rel(rel2abs($1),$ENV{BASEDIR})'
) >>"$TEMPFILE"
cd $DIR
find . -mindepth 1 \( -path ./.git -o -path ./work -o -path ./emperl5 \) -prune \
-o ! -name 'emperl.*' ! -type d -print0 \
| perl -wMstrict -MFile::Spec::Functions=canonpath -n0le 'print canonpath($_)' >>"$TEMPFILE"
xargs -0 -a "$TEMPFILE" \
grep --color=always -C1 -niE '\bto.?do\b'

@ -0,0 +1,36 @@
/** CSS file for emscr_ide.js **/
.emide {
font-family: Calibri, Ubuntu, "Droid Sans", Tahoma, Arial, Helvetica, sans-serif;
}
.CodeMirror,.code {
font-family: Consolas, "Ubuntu Mono", "Droid Sans Mono", "Lucida Console", "Courier New", Courier, monospace;
}
.toolbar button {
margin: 0 0.2em;
}
.statusbar {
padding: 0.2em;
height: 1em;
font-size: 10pt;
}
.filebrowser {
border: 1px solid black;
padding: 0.2em 0.5em;
overflow: auto;
height: 20em;
}
.fb-link { cursor:pointer; }
.fb-link:hover { color:#000090; background:rgba(255,255,102,0.4); }
.fb-link:active { color:#FF0000; }
.cm-resize-frame {
overflow: hidden;
resize: vertical;
height: 24em;
border: 1px solid grey;
}

@ -0,0 +1,259 @@
"use strict";
/** ***** WebPerl - http://webperl.zero-g.net *****
*
* Copyright (c) 2018 Hauke Daempfling (haukex@zero-g.net)
* at the Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB),
* Berlin, Germany, http://www.igb-berlin.de
*
* This program is free software; you can redistribute it and/or modify
* it under the same terms as Perl 5 itself: either the GNU General Public
* License as published by the Free Software Foundation (either version 1,
* or, at your option, any later version), or the "Artistic License" which
* comes with Perl 5.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the licenses for details.
*
* You should have received a copy of the licenses along with this program.
* If not, see http://perldoc.perl.org/index-licence.html
**/
function make_emscr_ide (textarea, callbacks) {
var defaulttext = "use warnings;\nuse 5.028;\nuse WebPerl qw/js/;\n\n";
var div = $('<div/>').addClass("emide");
var ide = { elem: div, cleanval: '' };
var tb = $('<div/>').addClass("toolbar").appendTo(div);
var file_new = $('<button/>',{title:"New File",html:"&#x1F4C4;"}).appendTo(tb);
var file_upload = $('<button/>',{title:"File from Disk",html:"&#x2B06;"}).appendTo(tb);
var file_download = $('<button/>',{title:"Download editor contents",html:"&#x2B07;"}).appendTo(tb);
var file_open = $('<button/>',{title:"Open File",html:"&#x1F4C1;"}).appendTo(tb);
var file_save = $('<button/>',{title:"Save File",html:"&#x1F4BE;"}).appendTo(tb);
var file_name = $('<input/>',{title:"File Name",type:"text",size:60}).addClass("code").appendTo(tb);
//TODO Later: support for deleting files?
var upload_file = $('<input/>',{type:"file"});
var file_up_form = $('<div/>').append(
$('<form/>').append( upload_file ) ).appendTo(div);
file_up_form.hide();
var fbrowser = make_emscr_ide_filebrowser();
fbrowser.elem.hide();
fbrowser.elem.appendTo(div);
var resize_frame = $('<div/>').addClass("cm-resize-frame").appendTo(div);
textarea.replaceWith(div);
resize_frame.append(textarea);
var statusbar = $('<div/>').addClass("statusbar").appendTo(div);
var cm = CodeMirror.fromTextArea( textarea[0], {
lineNumbers: true, indentWithTabs: true,
tabSize: 4, indentUnit: 4 });
ide.cm = cm;
/* With thanks to https://codepen.io/sakifargo/pen/KodNyR */
var fr = resize_frame[0];
var cm_resize = function() { cm.setSize(fr.clientWidth + 2, fr.clientHeight - 10); };
cm_resize();
if (window.ResizeObserver)
new ResizeObserver(cm_resize).observe(fr);
else if (window.MutationObserver)
new MutationObserver(cm_resize).observe(fr, {attributes: true});
ide.isDirty = function () { return cm.getValue()!=ide.cleanval; };
// returns true if the user chose to abort
// returns false if the buffer is not dirty or the user chose to continue anyway
ide.dirtyCheck = function () {
if (ide.isDirty()) {
// confirm() returns true if the user clicked "OK", and false otherwise.
if (confirm("Unsaved changes in editor!\nContinue anyway?"))
return false;
else return true; // buffer is dirty and user chose to abort
}
else return false;
};
file_new.click(function () {
if (ide.dirtyCheck()) return;
console.debug("IDE: New File");
file_name.val("");
ide.cleanval = defaulttext;
cm.setValue(defaulttext);
sessionStorage.removeItem('file_mru');
statusbar.text("New File");
});
file_upload.click(function () {
if(!window.FileReader) {
alert("Sorry, your browser does not support file uploads.");
return; }
if (file_up_form.is(":visible")) file_up_form.hide(); else file_up_form.show();
});
upload_file.on('change', function (chgEvt) {
statusbar.text("");
file_up_form.hide();
if (ide.dirtyCheck()) return;
file_name.val("");
sessionStorage.removeItem('file_mru');
console.debug("IDE: Reading file from local disk...");
var reader = new FileReader();
reader.onload = function(loadEvt) {
if(loadEvt.target.readyState != 2) return;
if(loadEvt.target.error) {
alert('Error while reading file');
return; }
console.debug("IDE: File read!");
statusbar.text("File opened from local disk");
cm.setValue(loadEvt.target.result);
};
reader.readAsText(chgEvt.target.files[0]);
});
file_download.click(function () {
var blob = new Blob([cm.getValue()],
{type: "text/plain;charset=utf-8"});
var link = document.createElement("a");
link.download = 'script.pl';
link.href = URL.createObjectURL(blob);
link.target = '_blank';
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
});
file_open.click(function () {
statusbar.text("");
if (!fbrowser) return;
if (fbrowser.isVisible()) {
file_open.html("&#x1F4C1;");
fbrowser.cancel();
}
else {
file_open.html("&#x1F4C2;&#x20E0;");
fbrowser.show(function (file) {
file_open.html("&#x1F4C1;");
if (ide.dirtyCheck()) return;
console.debug("IDE: Opening "+file);
file_name.val(file);
var data = FS.readFile(file,{encoding:"utf8"});
ide.cleanval = data;
cm.setValue(data);
sessionStorage.setItem('file_mru',file);
statusbar.text("Opened "+file);
console.debug("IDE: Opened "+file);
if (callbacks && callbacks.open) callbacks.open(file);
});
}
});
file_save.click(function () {
statusbar.text("");
var file = file_name.val();
if (file.length<1) {
alert("Invalid File Name");
return; }
try {
console.debug("IDE: Trying to save "+file);
var data = cm.getValue();
FS.writeFile( file, data );
/* Note: The user may be saving to some location outside of the IDBFS, in which
* case this syncfs call isn't really needed. But it doesn't really hurt either,
* so we always do it. */
FS.syncfs(false, function (err) {
if(err) { console.error(err); alert("Saving IDBFS failed: "+err); return; }
statusbar.text("Saved to "+file);
console.debug("IDE: Saved "+file);
sessionStorage.setItem('file_mru',file);
ide.cleanval = data;
if (callbacks && callbacks.save) callbacks.save(file);
});
}
catch (err) { console.error(err); alert("Save Failed: "+err); }
});
var mru_file = sessionStorage.getItem('file_mru');
try {
if (!mru_file) throw "No MRU file";
var data = FS.readFile( mru_file, {encoding:"utf8"} );
ide.cleanval = data;
cm.setValue(data);
file_name.val(mru_file);
console.debug("IDE: Loaded "+mru_file);
statusbar.text("Opened "+mru_file);
if (callbacks && callbacks.open) callbacks.open(mru_file);
}
catch (e) {
console.debug("IDE: Loading MRU failed:",e,"- falling back...");
file_name.val('');
ide.cleanval = defaulttext;
cm.setValue(defaulttext);
}
window.addEventListener("beforeunload", function (evt) {
if (ide.isDirty()) {
var dialogText = "Unsaved changes in editor!";
evt.returnValue = dialogText;
return dialogText;
}
});
return ide;
}
function make_emscr_ide_filebrowser() {
var fb = {
elem: $('<div/>').addClass("filebrowser"),
curpath: (ENV && ENV.HOME) ? ENV.HOME : FS.cwd(),
};
fb.update = function () {
fb.elem.empty();
$('<div>&#x1F4C2; </div>').addClass("fb-curdir")
.append(fb.curpath).appendTo(fb.elem);
var files = FS.readdir(fb.curpath);
$.each( files.sort(), function (idx,file) {
if (file=='.') return;
if (file=='..' && fb.curpath=='/') return;
var fullfile = FS.joinPath([fb.curpath,file]);
var stat = FS.stat(fullfile);
var icon = "&#x1F4DC;";
var click;
if (FS.isFile(stat.mode)) {
icon = "&#x1F4C4;";
click = function (evt) {
fb.elem.hide();
if(fb.callback) fb.callback(fullfile);
fb.callback = null;
};
}
else if (FS.isDir(stat.mode)) {
icon = file=='..'?"&#x1F4C1;&#x20D6;":"&#x1F4C1;";
click = function (evt) {
fb.curpath = fullfile;
fb.update();
};
}
else if (FS.isLink(stat.mode)) {
icon = "&#x1F4C4;&#x20EA;";
}
var el = $('<div>'+icon+' </div>').addClass("fb-link")
.append(file).appendTo(fb.elem);
if (click) el.click(click);
});
};
fb.show = function (callback) {
fb.callback = callback;
fb.elem.show();
fb.curpath = FS.cwd();
fb.update();
};
fb.cancel = function () {
fb.elem.hide();
fb.callback = null;
}
fb.isVisible = function () { return fb.elem.is(":visible") }
return fb;
}

@ -0,0 +1,244 @@
<!doctype html>
<html lang="en-us">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>WebPerl (IDE)</title>
<!-- ----- WebPerl - http://webperl.zero-g.net -----
Copyright (c) 2018 Hauke Daempfling (haukex@zero-g.net)
at the Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB),
Berlin, Germany, http://www.igb-berlin.de
This program is free software; you can redistribute it and/or modify
it under the same terms as Perl 5 itself: either the GNU General Public
License as published by the Free Software Foundation (either version 1,
or, at your option, any later version), or the "Artistic License" which
comes with Perl 5.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the licenses for details.
You should have received a copy of the licenses along with this program.
If not, see http://perldoc.perl.org/index-licence.html
-->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.39.2/codemirror.min.css" integrity="sha256-I8NyGs4wjbMuBSUE40o55W6k6P7tu/7G28/JGUUYCIs=" crossorigin="anonymous" />
<link rel="stylesheet" type="text/css" href="emscr_ide.css" />
<style>
button,.text {
font-family: Calibri, Ubuntu, "Droid Sans", Tahoma, Arial, Helvetica, sans-serif;
}
pre,.code,textarea {
font-family: Consolas, "Ubuntu Mono", "Droid Sans Mono", "Lucida Console", "Courier New", Courier, monospace;
}
.fakelink {
color: darkblue;
cursor: pointer;
}
.border {
border: 1px solid black;
margin: 0.5em;
padding: 0.2em;
}
#evalcode_container .CodeMirror {
height: 4em;
border: 1px solid grey;
margin: 0.2em 0;
}
.output {
margin-top: 0.5em;
}
.output textarea {
max-width: 100%;
}
</style>
<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.39.2/codemirror.min.js" integrity="sha256-uRIJ6Wfou5cTtmcCvQNA9lvsYl8sUbZXxnfG+P79ssY=" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.39.2/mode/perl/perl.min.js" integrity="sha256-Uu9QBfi8gU6J/MzQunal8ewmY+i/BbCkBrcAXA5bcCM=" crossorigin="anonymous"></script>
<script src="https://code.jquery.com/jquery-3.3.1.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>
<script src="emscr_ide.js"></script>
<script src="../webperl.js"></script>
<script>
"use strict";
console.debug("Running our Javascript...");
window.onerror = function(event) {
alert('Exception thrown, see JavaScript console'); };
// This is a workaround for Emscripten only being able to call main() once per page load.
// I wouldn't recommend this for "production" use.
var baseurl = new URL(window.location);
baseurl = baseurl.origin + baseurl.pathname.substring(0,baseurl.pathname.lastIndexOf('/'));
function run_perl_iframe (argv, state_callback, done_callback) {
var html = '<html><head><base href="'+baseurl+'"><script src="webperl.js"></scr'+'ipt></head><body></body></html>';
var blob = new Blob([html], {type: "text/html;charset=utf-8"});
var src = URL.createObjectURL(blob);
var iframe = $('<iframe/>',{id:'Perl_IFrame',src:src}).hide().appendTo('body');
iframe.on('load', function() {
var IFramePerl = iframe[0].contentWindow['Perl'];
var outbuf = '';
IFramePerl.output = function (str) { outbuf+=str }; //TODO Later: maybe dynamic output updating is possible?
IFramePerl.endAfterMain = true;
IFramePerl.stateChanged = function (from,to) {
if (state_callback) state_callback(to);
if (from!='Ended' && to=='Ended') {
iframe.remove();
if (done_callback) done_callback(outbuf);
}
};
IFramePerl.init(function () {
window.setTimeout(function () { IFramePerl.start(argv); }, 1);
});
});
}
var eval_cm;
$( function() {
console.debug("Document is ready, setting up...");
$('#runperl').prop("disabled",true);
$('#evalperl').prop("disabled",true);
$('#endperl').prop("disabled",true);
var once_out_ta = Perl.makeOutputTextarea();
$("#once_output").append(once_out_ta);
$("#once_out_clear").click(function () { $(once_out_ta).val("") });
{
var multirun = $('#multi_run');
var multirun_toggle = $('<div/>',{text:"Hide Run Multi (via IFrame)"});
multirun_toggle.addClass('fakelink');
multirun_toggle.click(function () {
if (multirun.is(":visible")) {
multirun.hide();
multirun_toggle.text("Show Run Multi (via IFrame)");
}
else {
multirun.show();
multirun_toggle.text("Hide Run Multi (via IFrame)");
}
});
multirun.before( multirun_toggle );
}
// need to set up CodeMirror while #runonce is still visible (!)
eval_cm = CodeMirror.fromTextArea( $('#evalcode')[0], {
lineNumbers: true, indentWithTabs: true,
tabSize: 4, indentUnit: 4 });
{
var runonce = $('#runonce');
var runonce_toggle = $('<div/>',{text:"Show Run & Persist"});
runonce_toggle.addClass('fakelink');
runonce_toggle.click(function () {
if (runonce.is(":visible")) {
runonce.hide();
runonce_toggle.text("Show Run & Persist");
}
else {
runonce.show();
runonce_toggle.text("Hide Run & Persist");
}
});
runonce.before( runonce_toggle );
runonce.hide();
}
Perl.stateChanged = function (from,to) {
console.debug("Perl: state changed from "+from+" to "+to);
$('#runstate').text("State: "+to);
$('#runperl' ).prop("disabled", to!="Ready");
$('#argv' ).prop("disabled", to!="Ready");
$('#evalperl').prop("disabled", to!="Running");
$('#endperl' ).prop("disabled", to!="Running");
};
Perl.init(final_init);
});
function final_init () { // Called when Perl goes to Ready state
console.debug("Final initialization steps...");
// set up the IDE now that the Emscripten FS object is all ready to go
var ide = make_emscr_ide( $('textarea#ide'), {
open: function(file) { $('#argv,#multi_argv').val( JSON.stringify([file]) ) },
save: function(file) { $('#argv,#multi_argv').val( JSON.stringify([file]) ) },
} );
$('#multi_runperl').click(function () {
if (ide.dirtyCheck()) return;
$('#multi_runperl').prop("disabled",true); // we *could* run multiple Perls in parallel, I just don't recommend it (memory & performance issues)
var argv = JSON.parse( $('#multi_argv').val() );
$('#multi_out_ta').text("");
run_perl_iframe(argv,
//TODO Later: the user never gets to see the "Running" state
function (newstate) { $('#multi_state').text("State: "+newstate) },
function (output) {
var ta = $('#multi_out_ta');
ta.text(output);
ta[0].scrollTop = ta[0].scrollHeight;
$('#multi_runperl').prop("disabled",false);
});
});
$('#runperl').click(function () {
if (ide.dirtyCheck()) return;
var argv = JSON.parse( $('#argv').val() );
// run Perl async so that the window has a chance to refresh
window.setTimeout(function () { Perl.start(argv); }, 1);
});
$('#evalperl').click(function () {
var rv = Perl.eval( eval_cm.getValue() );
console.debug('eval returned',rv);
});
$('#endperl').click(function () {
if (confirm("Are you sure you want to end Perl?\nYou'll have to reload the page to restart Perl."))
Perl.end();
});
}
</script>
</head>
<body>
<div class="border text" style="text-align:center"><small>Really Simple Mini IDE as a Demo for <a href="http://webperl.zero-g.net" target="_blank">WebPerl</a></small></div>
<div class="border">
<textarea id="ide" rows="24" cols="80"></textarea>
</div>
<div class="text border">
<div id="runonce">
<div>
<span class="code">ARGV:</span> <small>(JSON)</small>
<input type="text" id="argv" class="code" value='["--version"]' size="60" title="argv for perl (JSON)"/>
<button id="runperl" title="Run perl"><span class="code">perl</span> &#x25BA;</button>
<button id="endperl" title="End perl">end &#x25A0;</button>
</div>
<div class="statusbar" id="runstate">State: None</div>
<div>
<div id="evalcode_container"><textarea id="evalcode" rows="3" cols="80"></textarea></div>
<div><button id="evalperl" title="eval Perl code"><span class="code">eval</span> &#x25BA;</button></div>
</div>
<div class="output" id="once_output">
<span class="code">STDOUT and STDERR:</span> <button id="once_out_clear">Clear</button><br/>
<!-- output textarea will be inserted here -->
</div>
</div>
</div>
<div class="text border">
<div id="multi_run">
<div>
<span class="code">ARGV:</span> <small>(JSON)</small>
<input type="text" id="multi_argv" class="code" value='["--version"]' size="60" title="argv for perl (JSON)"/>
<button id="multi_runperl" title="Run perl"><span class="code">perl</span> &#x25BA;&#x25A0;</button><br/>
<small><i>(Remember to store code in a persistent storage like <span class="code">/mnt/idb</span>!)</i></small>
</div>
<div class="statusbar" id="multi_state">State: None</div>
<div class="output">
<span class="code">STDOUT and STDERR:</span><br/>
<textarea id="multi_out_ta" rows="24" cols="80" readonly></textarea>
</div>
</div>
</div>
</body>
</html>

@ -0,0 +1,350 @@
"use strict";
/** ***** WebPerl - http://webperl.zero-g.net *****
*
* Copyright (c) 2018 Hauke Daempfling (haukex@zero-g.net)
* at the Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB),
* Berlin, Germany, http://www.igb-berlin.de
*
* This program is free software; you can redistribute it and/or modify
* it under the same terms as Perl 5 itself: either the GNU General Public
* License as published by the Free Software Foundation (either version 1,
* or, at your option, any later version), or the "Artistic License" which
* comes with Perl 5.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the licenses for details.
*
* You should have received a copy of the licenses along with this program.
* If not, see http://perldoc.perl.org/index-licence.html
**/
/** Public Interface:
* Perl.output - override this for output somewhere else
* Perl.stateChanged - callback for state changes
* Perl.trace - enables debug/trace messages
* Perl.endAfterMain - see exit(0) discussion below
* Perl.init - initializes the Perl interpreter. Pass this function a callback to be called when init is done
* Perl.start - starts up the Perl interpreter
* Perl.eval - evaluates the given Perl string
* Perl.end - Ends the Perl interpreter
* Perl.makeOutputTextarea - creates a <textarea> and redirects output there (see HTML examples)
*/
/** On our patched perlmain.c and exit(0):
* Since we want the Perl process to persist while the webpage is open, we've patched perlmain.c so that:
* 1. Global destruction and END blocks aren't triggered until explicitly requested by calling emperl_end_perl()
* 2. emperl_end_perl() won't actually call exit() when the exit status is zero (because Emscripten complains when you call exit() and NO_EXIT_RUNTIME is set)
* This has some consequences:
* 1. An exit(0) in the main program won't have any effect other than stopping the execution of the main program at that point, the interpreter is kept running (?)
* 2. ... TODO Later: Any other consequences?
* As a result:
* - Just don't call exit(0);/exit; from Perl.
* Note that if you want to "end" the currently running Perl, so that global destruction is performed and END blocks are executed, there are several ways to do so:
* - From JS, set Perl.endAfterMain before initializing Perl (this enables a "hack" that calls emperl_end_perl() after main() finishes)
* - From JS, call Perl.end()
* - From Perl, WebPerl::end_perl() (TODO Later: This doesn't cause Module.onExit to be called, right?)
*/
var Module;
var Perl = {
trace: false, // user may enable this
endAfterMain: false, // user may enable this (before Perl.init)
// internal variables:
initStepsLeft: 2, // Must match number of Perl.initStepFinished() calls!
state: "Uninitialized",
readyCallback: null,
stdout_buf: "", stderr_buf: "", // for our default Perl.output implementation
};
/* TODO: Embedded script should be able to influence the running of Perl,
* the cleanest would probably be to set properties on the Perl object,
* such as Perl.autorun = false or Perl.argv = [...]. */
window.addEventListener("load", function () {
// Note: to get the content of script tags with jQuery: $('script[type="text/perl"]').html()
var scripts = [];
var script_src;
document.querySelectorAll("script[type='text/perl']")
.forEach(function (el) {
if (el.src) {
if (script_src || scripts.length)
console.error('Only a single Perl script may be loaded via "script src=", ignoring others');
else
script_src = el.src;
}
else {
if (script_src)
console.error('Only a single Perl script may be loaded via "script src=", ignoring others');
else
scripts.push(el.innerHTML);
}
});
if (script_src) {
console.debug("Perl: Found a script with src, fetching and running...", script_src);
var xhr = new XMLHttpRequest();
xhr.addEventListener("load", function () {
//TODO Later: Might be nice to name the script in the virtual FS after the URL instead of a generic name
Perl._saveAndRun( this.responseText );
});
xhr.open("GET", script_src);
xhr.send();
}
else if (scripts.length) {
console.debug("Perl: Found",scripts.length,"embedded script(s), autorunning...");
//TODO: should we maybe prefix "use warnings; use 5.028;"? or at least "use WebPerl qw/js/;"?
Perl._saveAndRun( scripts.join(";\n") );
}
else console.debug("Perl: No embedded scripts");
});
Perl._saveAndRun = function (script) {
Perl.init(function () {
var file = "/tmp/scripts.pl";
try {
FS.writeFile( file, script );
console.debug("Perl: Saved script(s) to ",file,", now running");
window.addEventListener("beforeunload", function () {
// not really needed because we're unloading anyway, but for good measure, end Perl...
console.debug("Perl: beforeunload, ending...");
Perl.end();
});
// run Perl async so that the window has a chance to refresh
window.setTimeout(function () { Perl.start( [ file ] ); }, 1);
}
catch (err) { console.error("Perl:",err); alert("Save to "+file+"Failed: "+err); }
});
};
Perl.changeState = function (newState) {
var oldState = Perl.state;
Perl.state = newState;
if (Perl.stateChanged) Perl.stateChanged(oldState,newState);
};
Perl.stateChanged = function (from,to) { //TODO: allow multiple listeners
console.debug("Perl: state changed from "+from+" to "+to);
};
// chan: 1=STDOUT, 2=STDERR
// implementations are free to ignore the "chan" argument if they want to merge the two streams
Perl.output = function (str,chan) { // can be overridden by the user
var buf = chan==2 ? 'stderr_buf' : 'stdout_buf';
Perl[buf] += str;
var pos = Perl[buf].indexOf("\n");
while (pos>-1) {
console.log( chan==2?"STDERR":"STDOUT", Perl[buf].slice(0,pos) );
Perl[buf] = Perl[buf].slice(pos+1);
pos = Perl[buf].indexOf("\n");
}
};
Perl.outputLine = function (chan,text) { // internal function
if (arguments.length > 1) text = Array.prototype.slice.call(arguments).join(' ');
Perl.output(text,chan);
Perl.output("\n",chan);
};
Perl.outputChar = function (chan,c) { // internal function
Perl.output(String.fromCharCode(c),chan);
};
Perl.makeOutputTextarea = function (id) {
var ta = document.createElement('textarea');
if (id) ta.id = id;
ta.rows = 24; ta.cols = 80;
ta.setAttribute("readonly",true);
Perl.output = function (str) {
ta.value = ta.value + str;
ta.scrollTop = ta.scrollHeight;
};
return ta;
};
var getScriptURL = (function() { // with thanks to https://stackoverflow.com/a/2976714
var scripts = document.getElementsByTagName('script');
var index = scripts.length - 1;
var myScript = scripts[index];
return function() { return myScript.src; };
})();
Perl.init = function (readyCallback) {
if (Perl.state != "Uninitialized")
throw "Perl: can't call init in state "+Perl.state;
Perl.changeState("Initializing");
var baseurl = new URL(getScriptURL());
baseurl = baseurl.origin + baseurl.pathname.substring(0,baseurl.pathname.lastIndexOf('/'));
Perl.readyCallback = readyCallback;
Module = {
noInitialRun: true,
noExitRuntime: true,
print: Perl.outputLine.bind(null,1), printErr: Perl.outputLine.bind(null,2),
stdout: Perl.outputChar.bind(null,1), stderr: Perl.outputChar.bind(null,2),
stdin: function () { return null },
arguments: ['--version'],
onAbort: function () {
Perl.changeState("Ended");
console.error("Perl: Aborted (state "+Perl.state+")");
alert("Perl aborted");
},
onExit: function (status) { // note this may be called multiple times
Perl.changeState("Ended");
if (status==0)
console.info( "Perl: Exit status "+status+" (state "+Perl.state+")");
else {
console.error("Perl: Exit status "+status+" (state "+Perl.state+")");
alert("Perl exited with exit status "+status+" in state "+Perl.state);
}
},
onRuntimeInitialized: function () {
console.debug("Perl: Module.onRuntimeInitialized");
Perl.initStepFinished();
},
preRun: [
function () {
console.debug("Perl: doing preRun, fetching IndexDB filesystem...");
try { FS.mkdir('/mnt'); } catch(e) {}
try { FS.mkdir('/mnt/idb'); } catch(e) {}
FS.mount(IDBFS, {} ,'/mnt/idb');
FS.syncfs(true, function (err) {
if (err) { console.error("Perl:",err); alert("Perl: Loading IDBFS failed: "+err); return; }
console.debug("Perl: IndexDB filesystem ready");
Perl.initStepFinished();
});
}
],
locateFile: function (file) {
var wasmRe = /\.(wast|wasm|asm\.js|data)$/;
if (wasmRe.exec(file))
return baseurl+"/"+file;
return file;
},
};
if (Perl.endAfterMain) {
Module.preRun.push(function () {
// patch _main so that afterwards we call emperl_end_perl
var origMain = Module._main;
Module._main = function() {
origMain.apply(this, arguments);
console.debug("Perl: main() has ended, ending perl...");
var status = ccall("emperl_end_perl","number",[],[]);
if (status==0) {
// we know that in this case, there is no event thrown to us (since exit() isn't called)
// so we have to transition states manually
Module.onExit(status);
}
return status;
};
});
}
console.debug("Perl: Fetching Emscripten/Perl...");
var script = document.createElement('script');
script.async = true; script.defer = true;
script.src = baseurl+"/emperl.js";
document.getElementsByTagName('head')[0].appendChild(script);
};
Perl.initStepFinished = function () {
if (Perl.state!="Initializing" || Perl.initStepsLeft<1)
throw "Perl: internal error: can't call initStepFinished in state "+Perl.state+" ("+Perl.initStepsLeft+")";
if (--Perl.initStepsLeft) {
console.debug("Perl: One init step done, but "+Perl.initStepsLeft+" steps left, waiting...");
return;
} else console.debug("Perl: All init steps done, doing final initialization...");
/* NOTE: Apparently, when NO_EXIT_RUNTIME is set, and exit() is called from the main program
* (from Module.callMain), Emscripten doesn't report this back to us via an ExitStatus exception
* like it does from ccall - it doesn't even call the addOnExit/ATEXIT or addOnPostRun/ATPOSTRUN
* handlers! So at the moment, the only reliable way I've found to catch the program exit()ing
* is to patch into Emscripten's (undocumented!) Module.quit... */
var origQuit = Module.quit;
Module.quit = function (status, exception) {
console.debug("Perl: quit with",exception);
Module.onExit(status);
origQuit(status,exception);
}
Perl.changeState("Ready");
if (Perl.readyCallback) Perl.readyCallback();
Perl.readyCallback = null;
};
Perl.start = function (argv) {
if (Perl.state!="Ready")
throw "Perl: can't call start in state "+Perl.state;
Perl.changeState("Running");
try {
// Note: currently callMain doesn't seem to throw ExitStatus exceptions, see discussion in Perl.initStepFinished
Module.callMain(argv ? argv : Module.arguments);
}
catch (e) {
if (e instanceof ExitStatus) {
console.debug("Perl: start:",e);
Module.onExit(e.status);
} else throw e;
}
};
Perl.eval = function (code) {
if (Perl.state!="Running")
throw "Perl: can't call eval in state "+Perl.state;
if (Perl.trace) console.debug('Perl: ccall webperl_eval_perl',code);
try {
return ccall("webperl_eval_perl","string",["string"],[code]);
}
catch (e) {
if (e instanceof ExitStatus) {
// the code caused perl to (try to) exit - now we need to call
// Perl's global destruction via our emperl_end_perl() function
Perl.end(); //TODO: Perl.end has already been called at this point (how?)
} else throw e;
}
};
/* Note that Emscripten apparently doesn't support re-running the program once it exits (?).
* So at the moment, once we end Perl, that's it. The only useful effect of ending Perl is
* that global destruction is executed and END blocks are called. But since a user may leave
* a webpage at any moment without warning, WebPerl scripts should not rely on normal termination! */
Perl.end = function () {
if (Perl.state!="Running") {
if (Perl.state=="Ended") {
console.warn("Perl: end called when already Ended");
return;
}
else throw "Perl: can't call end in state "+Perl.state;
}
else Perl.changeState("Ended");
try {
ccall("emperl_end_perl","number",[],[]);
}
catch (e) {
if (e instanceof ExitStatus) {
console.debug("Perl: end: ",e);
Module.onExit(e.status);
} else throw e;
}
};
Perl.next_glue_id = 0;
Perl.GlueTable = {};
Perl._glue_free_ids = {};
Perl.glue = function (ref) {
var id;
var free_ids = Object.keys(Perl._glue_free_ids);
if (free_ids.length>0) {
id = free_ids[0];
delete Perl._glue_free_ids[id];
if (Perl.trace) console.debug('Perl: Glue reused id',id,'to',ref);
}
else {
if (Perl.next_glue_id>=Number.MAX_SAFE_INTEGER)
throw "Perl.GlueTable is overflowing!"
id = ''+(Perl.next_glue_id++);
if (Perl.trace) console.debug('Perl: Glue id',id,'to',ref);
}
Perl.GlueTable[id] = ref;
return id;
}
Perl.unglue = function (id) {
if (Perl.trace) console.debug('Perl: Unglue id',id,'from',Perl.GlueTable[id]);
delete Perl.GlueTable[id];
Perl._glue_free_ids[id]=1;
}

@ -0,0 +1,31 @@
#!/usr/bin/env perl
use warnings;
use 5.0.26;
use FindBin;
use Plack::MIME;
use Plack::Builder qw/builder enable mount/;
use Plack::App::Directory ();
# Demo Plack server for WebPerl
# run me with "plackup webperl.psgi"
# in an Apache .htaccess file, one could say:
#AddType application/javascript .js
#AddType application/octet-stream .data .mem
#AddType application/wasm .wasm
Plack::MIME->add_type(".js" => "application/javascript");
Plack::MIME->add_type(".data" => "application/octet-stream");
Plack::MIME->add_type(".mem" => "application/octet-stream");
Plack::MIME->add_type(".wasm" => "application/wasm");
my $SERV_ROOT = $FindBin::Bin;
builder {
enable 'SimpleLogger';
enable 'Static',
path => qr/\.(?:html?|js|css|data|mem|wasm|pl)\z/i,
root => $SERV_ROOT;
Plack::App::Directory->new({root=>$SERV_ROOT})->to_app;
}

@ -0,0 +1,78 @@
<!doctype html>
<html lang="en-us">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>WebPerl &lt;script&gt; Demos</title>
<script src="webperl.js"></script>
<!-- It's possible to load a single script like this:
<script type="text/perl" src="foo.pl"></script>
but then only a single <script type="text/perl"> tag is allowed in the
document, because there is only a single Perl interpreter.
If you use multiple <script type="text/perl"> tags like below, they are
concatenated into a single script and then run.
If you don't have any such script tags in the document, Perl won't be
run automatically, and you can control Perl in detail via the JS "Perl"
object provided by webperl.js (more control over output redirection, set
command line arguments, etc.). Most of this functionality is
demonstrated in the included "mini IDE".
-->
<!-- Example 1: A really basic script -->
<script type="text/perl">
print "Hello, Perl World!\n";
</script>
<!-- Example 2: Accessing JavaScript -->
<script type="text/perl">
use warnings;
use strict;
use WebPerl qw/js/;
js('document')->getElementById('my_button')
->addEventListener("click", sub {
print "You clicked 'Testing!'\n";
} );
</script>
<!-- Example 3: Using jQuery -->
<script src="https://code.jquery.com/jquery-3.3.1.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>
<script type="text/perl">
use warnings;
use strict;
use WebPerl qw/js/;
my $jq = js('jQuery');
my $btn = $jq->('<button>', { text=>"Click me!" } );
$btn->click(sub {
print "You clicked the jQuery button!\n";
} );
$btn->appendTo( $jq->('#buttons') );
</script>
<!-- Optional STDOUT/STDERR text area (if you don't use this, output goes to Javascript console) -->
<script>
window.addEventListener("load", function () {
document.getElementById('output')
.appendChild( Perl.makeOutputTextarea() );
});
</script>
</head>
<body>
<p>This is a demo of <a href="http://webperl.zero-g.net" target="_blank">WebPerl</a>!</p>
<div id="output"></div>
<div id="buttons">
<button id="my_button">Testing!</button>
</div>
</body>
</html>
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