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RPM: perlconsole

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pax_global_header00006660000000000000000000000064113110640750014510gustar00rootroot0000000000000052 comment=b3e6aac13910d7e880a8d970164d55a2418b98c1
perlconsole-0.4/000075500000000000000000000000001131106407500136765ustar00rootroot00000000000000perlconsole-0.4/AUTHORS000064400000000000000000000006361131106407500147530ustar00rootroot00000000000000AUTHORS

Perl Console is written by Alexis Sukrieh.
It is released under the terms of the GNU GPL Licence (see COPYING for details).

CONTRIBUTORS

The following people contributed to Perl Console:

- Antonio Terceiro (Perl Packaging).
- Daniel Novotny (patch for supporting if/while/for structure in evaluated
code).
- S. Zachariah Sprackett (Readline history support, rc file support)

perlconsole-0.4/CHANGES000064400000000000000000000013511131106407500146710ustar00rootroot000000000000002007-08- Alexis Sukrieh <sukria@sukria.net>

* New release: 0.3
* use Module::Refresh before evaluating a line
* support for complex perl code (while, if, for, ...)
* History saved in ~/.perlconsole_history
* Support for a ~/.perlconsolerc (every line in that file
will be evaluated at launch time)
* Added a real namespace to the console, each variable declared
with "my" are persistent in the session.
* The console runs in strict mode.

2007-08-13 Alexis Sukrieh <sukria@sukria.net>

* New release: 0.2
* Support for output modes "yaml" and "Data::Dumper"
* Complete rewrite in Object Oriented way, more scalable.

2007-08-10 Alexis Sukrieh <sukria@sukria.net>

* Initial release
perlconsole-0.4/COPYING000064400000000000000000000431311131106407500147330ustar00rootroot00000000000000 GNU GENERAL PUBLIC LICENSE
Version 2, June 1991

Copyright (C) 1989, 1991 Free Software Foundation, Inc.
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.

Preamble

The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU 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. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Library General Public License instead.) You can apply it to
your programs, too.

When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), 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 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 show them these terms so they know 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.

Finally, any free program is threatened constantly by software
patents. We wish to avoid the danger that redistributors of a free
program will individually obtain patent licenses, in effect making the
program proprietary. To prevent this, we have made it clear that any
patent must be licensed for everyone's free use or not licensed at all.

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 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 derivative work under copyright law:
that is to say, a work containing the Program or a portion of it,
either verbatim or with modifications and/or translated into another
language. (Hereinafter, translation is included without limitation in
the term "modification".) Each licensee is addressed as "you".

Activities other than copying, distribution and modification are not
covered by this License; they are outside its scope. The act of
running the Program is not restricted, and the output from the Program
is covered only if its contents constitute a work based on the
Program (independent of having been made by running the Program).
Whether that is true depends on what the Program does.

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 License and to the absence of any warranty;
and give any other recipients of the Program a copy of this License
along with the Program.

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.

2. You may modify your copy or copies of the Program or any portion
of it, thus forming a work based on the Program, and copy and
distribute such modifications or work under the terms of Section 1
above, provided that you also meet all of these conditions:

a) You must cause the modified files to carry prominent notices
stating that you changed the files and the date of any change.

b) You must cause any work that you distribute or publish, that in
whole or in part contains or is derived from the Program or any
part thereof, to be licensed as a whole at no charge to all third
parties under the terms of this License.

c) If the modified program normally reads commands interactively
when run, you must cause it, when started running for such
interactive use in the most ordinary 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
License. (Exception: if the Program itself is interactive but
does not normally print such an announcement, your work based on
the Program is not required to print an announcement.)

These requirements apply to the modified work as a whole. If
identifiable sections of that work are not derived from the Program,
and can be reasonably considered independent and separate works in
themselves, then this License, and its terms, do not apply to those
sections when you distribute them as separate works. But when you
distribute the same sections as part of a whole which is a work based
on the Program, the distribution of the whole must be on the terms of
this License, whose permissions for other licensees extend to the
entire whole, and thus to each and every part regardless of who wrote it.

Thus, it is not the intent of this section to claim rights or contest
your rights to work written entirely by you; rather, the intent is to
exercise the right to control the distribution of derivative or
collective works based on the Program.

In addition, mere aggregation of another work not based on the Program
with the Program (or with a work based on the Program) on a volume of
a storage or distribution medium does not bring the other work under
the scope of this License.

3. You may copy and distribute the Program (or a work based on it,
under Section 2) in object code or executable form under the terms of
Sections 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 Sections
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b) Accompany it with a written offer, valid for at least three
years, to give any third party, for a charge no more than your
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c) Accompany it with the information you received as to the offer
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4. You may not copy, modify, sublicense, or distribute the Program
except as expressly provided under this License. Any attempt
otherwise to copy, modify, sublicense or distribute the Program is
void, and will automatically terminate your rights under this License.
However, parties who have received copies, or rights, from you under
this License will not have their licenses terminated so long as such
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may not distribute the Program at all. For example, if a patent
license would not permit royalty-free redistribution of the Program by
all those who receive copies directly or indirectly through you, then
the only way you could satisfy both it and this License would be to
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any particular circumstance, the balance of the section is intended to
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It is not the purpose of this section to induce you to infringe any
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such claims; this section has the sole purpose of protecting the
integrity of the free software distribution system, which is
implemented by public license practices. Many people have made
generous contributions to the wide range of software distributed
through that system in reliance on consistent application of that
system; it is up to the author/donor to decide if he or she is willing
to distribute software through any other system and a licensee cannot
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This section is intended to make thoroughly clear what is believed to
be a consequence of the rest of this License.

8. If the distribution and/or use of the Program is restricted in
certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Program under this License
may add an explicit geographical distribution limitation excluding
those countries, so that distribution is permitted only in or among
countries not thus excluded. In such case, this License incorporates
the limitation as if written in the body of this License.

9. The Free Software Foundation may publish revised and/or new versions
of the General Public License from time to time. Such new versions will
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address new problems or concerns.

Each version is given a distinguishing version number. If the Program
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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
this License, you may choose any version ever published by the Free Software
Foundation.

10. If you wish to incorporate parts of the Program into other free
programs whose distribution conditions are different, write to the author
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of promoting the sharing and reuse of software generally.

NO WARRANTY

11. 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.

12. 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

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 the public, 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) <year> <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 2 of the License, 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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) year 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 is a sample; alter the names:

Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.

<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice

This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Library General
Public License instead of this License.
perlconsole-0.4/INSTALL000064400000000000000000000006171131106407500147330ustar00rootroot00000000000000Install instructions
====================

Basically:

$ perl Makefile.PL
$ make
$ make install

If you want to install perlconsole system-wide, at least the last command must
be run as root (e.g. with sudo).

Dependencies
============

Perl Console depends on the Term::Readline module.

The first step of the installation procedure will warn you in case any of the
dependencies are not installed.
perlconsole-0.4/MANIFEST000064400000000000000000000002671131106407500150340ustar00rootroot00000000000000CHANGES
INSTALL
README
lib/PerlConsole/Preferences.pm
lib/PerlConsole/Commands.pm
lib/PerlConsole/Console.pm
lib/PerlConsole.pm
COPYING
perlconsole
Makefile.PL
MANIFEST
MANIFEST.SKIP
perlconsole-0.4/MANIFEST.SKIP000064400000000000000000000000071131106407500155710ustar00rootroot00000000000000.bzr/*
perlconsole-0.4/Makefile.PL000064400000000000000000000004451131106407500156530ustar00rootroot00000000000000use ExtUtils::MakeMaker;


WriteMakefile (
NAME => 'perlconsole',
VERSION_FROM => 'lib/PerlConsole.pm',
EXE_FILES => ['perlconsole'],
PREREQ_PM => {
'Term::ReadLine' => 0,
'B::Keywords' => 0,
'Module::Refresh' => 0,
'Lexical::Persistence' => 0},
);
perlconsole-0.4/README000064400000000000000000000004721131106407500145610ustar00rootroot00000000000000 Perl Console

Perl Console is a light program that lets you evaluate Perl code interactively.

It uses Readline to grab input, and provides completion with all the namespaces
loaded during your session. It allows you to load a module in your session and
test a function exported by it.
perlconsole-0.4/lib/000075500000000000000000000000001131106407500144445ustar00rootroot00000000000000perlconsole-0.4/lib/PerlConsole.pm000064400000000000000000000000501131106407500172220ustar00rootroot00000000000000package PerlConsole;

$VERSION = '0.4';
perlconsole-0.4/lib/PerlConsole/000075500000000000000000000000001131106407500166715ustar00rootroot00000000000000perlconsole-0.4/lib/PerlConsole/Commands.pm000064400000000000000000000060131131106407500207700ustar00rootroot00000000000000package PerlConsole::Commands;
# Copyright © 2007 Alexis Sukrieh
#
# 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 2 of the License, 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.

use strict;
use warnings;

# All the internal commands of the Perl Console are defined here.

my $help = {
preferences => "Display all the avaialbe preferences and how to change them.",
quit => "Quit the console.",
};

# display the help message

# returns 1 if the string is an internal command
sub isInternalCommand($$)
{
my ($class, $code) = @_;
return 0 unless $code;
chomp($code);
return $code =~ /^\s*:(\S+)\s*/;
}

# Execute the internal command given
sub execute($$$)
{
my ($class, $console, $code) = @_;

# preference : output
if ($code =~ /^\s*:set/) {
if ($code =~ /^\s*:set\s+(\S+)\s*=\s*(\S+)/) {
my ($pref, $val) = ($1, $2);
if ($pref eq "output") {
$console->setOutput($val);
}
else {
$console->setPreference($pref, $val);
}
}
else {
$console->error("invalid syntax for setting a preference, see :help preferences");
}
}

# The main help page
elsif ($code =~ /^\s*:help\s*$/) {
$console->message(PerlConsole::Commands->help($console));
}

# The help page of a specified topic
elsif ($code =~ /^\s*:help\s+(\S+)/) {
$console->message(PerlConsole::Commands->help($console, $1));
}

# display the logs stack
elsif ($code =~ /^\s*:logs/) {
foreach my $log (@{$console->getLogs}) {
$console->message($log);
}
}

# at this point, unrecognized command
else {
$console->error("no such command");
}
return 1;
}

# Returns an help message, on a topic
sub help
{
my ($class, $console, $topic) = @_;
if (! defined $topic) {
return "The following help topics are available:\n".
join("\n- ", keys%{$help});
}
else {
# preferences have automated online help
if ($topic =~ /preferences/) {
return $console->{'prefs'}->help();
}
elsif (grep /^$topic$/, $console->{'prefs'}->getPreferences()) {
return $console->{'prefs'}->help($topic);
}
elsif (defined $help->{$topic}) {
return $help->{$topic};
}
else {
return "No such help topic: $topic";
}
}
}

# END
1;
perlconsole-0.4/lib/PerlConsole/Console.pm000064400000000000000000000345701131106407500206420ustar00rootroot00000000000000package PerlConsole::Console;

# This class implements all the stuff needed to communicate with
# the console.
# Either for displaying message in the console (error and verbose stuff)
# or for launcing command, or even changing the console's context.

# dependencies
use strict;
use warnings;
use Term::ReadLine;
use PerlConsole::Preferences;
use PerlConsole::Commands;
use Module::Refresh;
use Lexical::Persistence;
use Getopt::Long;
use B::Keywords qw(@Functions);

# These are all the built-in keywords of Perl
my @perl_keywords = @B::Keywords::Functions;

##############################################################
# Constructor
##############################################################
sub new($@)
{
my ($class, $version) = @_;

# the console's data structure
my $self = {
version => $version,
prefs => new PerlConsole::Preferences,
terminal => new Term::ReadLine("Perl Console"),
lexical_environment => new Lexical::Persistence,
rcfile => $ENV{HOME}.'/.perlconsolerc',
prompt => "Perl> ",
modules => {},
logs => [],
errors => [],
};
bless ($self, $class);

# set the readline history if a Gnu terminal
if ($self->{'terminal'}->ReadLine eq "Term::ReadLine::Gnu") {
$SIG{'INT'} = sub { $self->clean_exit(0) };
$self->{'terminal'}->ReadHistory($ENV{HOME} . "/.perlconsole_history");
}

# init the completion list with Perl internals...
$self->addCompletion([@perl_keywords]);

# ... and with PerlConsole's ones
$self->addCompletion([$self->{'prefs'}->getPreferences]);
foreach my $pref ($self->{'prefs'}->getPreferences) {
$self->addCompletion($self->{'prefs'}->getValidValues($pref));
}
# FIXME : we'll have to rewrite the commands stuff in a better way
$self->addCompletion([qw(:quit :set :help)]);
# the console's ready!
return $self;
}

# This is where we define all the options supported
# on the command-line
sub parse_options
{
my ($self) = @_;
GetOptions('rcfile=s' => \$self->{rcfile});

# cleanup of the ~ shortcut for $ENV{HOME}
my $home = $ENV{HOME};
$self->{rcfile} =~ s/^~/${home}/;
}

# method for exiting properly and flushing the history
sub clean_exit($$)
{
my ($self, $status) = @_;
if ($self->{'terminal'}->ReadLine eq "Term::ReadLine::Gnu") {
$self->{'terminal'}->WriteHistory($ENV{HOME} . "/.perlconsole_history");
}
exit $status;
}

##############################################################
# Terminal
##############################################################

sub addCompletion($$)
{
my ($self, $ra_list) = @_;
my $attribs = $self->{'terminal'}->Attribs;
$attribs->{completion_entry_function} = $attribs->{list_completion_function};
if (! defined $attribs->{completion_word}) {
$attribs->{completion_word} = $ra_list;
}
else {
foreach my $elem (@{$ra_list}) {
push @{$attribs->{completion_word}}, $elem;
}
}
}

sub is_completion
{
my ($self, $item) = @_;
my $attribs = $self->{'terminal'}->Attribs;
return grep /^${item}$/, @{$attribs->{completion_word}};
}

sub getInput
{
my ($self) = @_;
return $self->{'terminal'}->readline($self->{'prompt'});
}

##############################################################
# Communication methods
##############################################################

sub header
{
my ($self) = @_;
$self->message("Perl Console ".$self->{'version'});
}

# add an error the error list, this is a LIFO stack, see getError.
sub addError($$)
{
my ($self, $error) = @_;
return unless defined $error;
chomp ($error);
push @{$self->{'errors'}}, $error;
}

# returns the last error message seen
sub getError($)
{
my ($self) = @_;
return $self->{'errors'}[$#{$self->{'errors'}}];
}

# clear the error messages, back to an empty list.
sub clearErrors($)
{
my ($self) = @_;
$self->{'errors'} = [];
}

# prints an error message, and record it to the error list
sub error($$)
{
my ($self, $string) = @_;
chomp $string;
$self->addError($string);
print "[!] $string\n";
}

sub message
{
my ($self, $string) = @_;
if (! defined $string) {
print "undef\n";
}
else {
chomp $string;
print "$string\n";
}
}

# time
sub getTime($)
{
my ($self) = @_;
my ($sec, $min, $hour,
$mday, $mon, $year,
$wday, $yday, $isdst) = localtime(time);
$mon++;
$year += 1900;
$mon = sprintf("%02d", $mon);
$mday = sprintf("%02d", $mday);
return "$year-$mon-$mday $hour:$mon:$sec";
}

# push a log message on the top of the stack
sub addLog($$)
{
my ($self, $log) = @_;
push @{$self->{'logs'}}, "[".$self->getTime."] $log";
}

# get the last log message and remove it
sub getLog($)
{
my ($self) = @_;
my $log = $self->{'logs'}[$#{$self->{'logs'}}];
pop @{$self->{'logs'}};
return $log;
}

# Return the list of all unread log message and empty it
sub getLogs
{
my ($self) = @_;
my $logs = $self->{'logs'};
$self->{'logs'} = [];
return $logs;
}

##############################################################
# Preferences
##############################################################

# accessors for the encapsulated preference object
sub setPreference($$$)
{
my ($self, $pref, $value) = @_;
my $prefs = $self->{'prefs'};
$self->addLog("setPreference: $pref = $value");
return $prefs->set($pref, $value);
}

sub getPreference($$)
{
my ($self, $pref) = @_;
my $prefs = $self->{'prefs'};
my $val = $prefs->get($pref);
return $val;
}

# set the output and take care to load the appropriate module
# for the output
sub setOutput($$)
{
my ($self, $output) = @_;
my $rh_output_modules = {
'yaml' => 'YAML',
'dumper' => 'Data::Dumper',
'dump' => 'Data::Dump',
'dds' => 'Data::Dump::Streamer',
};

if (exists $rh_output_modules->{$output}) {
my $module = $rh_output_modules->{$output};
unless ($self->load($module)) {
$self->error("Unable to load module \"$module\", ".
"cannot use output mode \"$output\"");
return 0;
}
}

unless ($self->setPreference("output", $output)) {
$self->error("unable to set preference output to \"$output\"");
return 0;
}

return 1;
}

# this interprets a string, it calls the appropriate internal
# function to deal with the provided string
sub interpret($$)
{
my ($self, $code) = @_;

# cleanup a bit the input string
chomp $code;
return unless length $code;

# look for the exit command.
$self->clean_exit(0) if $code =~ /(:quit|exit)/i;

# look for console's internal language
return if $self->command($code);

# look for a module to import
return if $self->useModule($code);

# Refresh the loaded modules in @INC that have changed
Module::Refresh->refresh;

# looks like it's time to evaluates some code ;)
$self->print_result($self->evaluate($code));
print "\n";

# look for something to save in the completion list
$self->learn($code);

}

# this reads and interprets the contents of an rc file (~/.perlconsolerc)
# at startup. It is useful for things like loading modules that we always
# want present or setting up some default variables
sub source_rcfile($)
{
my ($self) = @_;
my $file = $self->{'rcfile'};
$self->addLog("loading rcfile: $file");

if ( -r $file) {
if (open(RC, "<", "$file")) {
while(<RC>) {
$self->interpret($_);
}
close RC;
}
else {
$self->error("unable to read rcfile $file : $!");
}
}
else {
$self->error("rcfile $file is not readable");
}
}

# Context methods

# load a module in the console's namespace
# also take car to import all its symbols in the complection list
sub load($$;$)
{
my ($self, $package, $tag) = @_;
unless (defined $self->{'tags'}{$package}) {
$self->{'tags'}{$package} = {};
}

# look for already loaded modules/tags
if (defined $tag) {
return 1 if defined $self->{'tags'}{$package}{$tag};
}
else {
return 1 if defined $self->{'modules'}{$package};
}

if (eval "require $package") {
if (defined $tag) {
foreach my $t (split /\s+/, $tag) {
eval { $package->import($t); };
if ($@) {
$self->addError($@);
return 0;
}
# mark the tag as loaded
$self->{'tags'}{$package}{$tag} = 1;
}
}
else {
eval { $package->import(); };
if ($@) {
$self->addError($@);
return 0;
}
}
# mark the module as loaded
$self->{'modules'}{$package} = 1;
return 1;
}
$self->addError($@);
return 0;
}

# This function takes a module as argument and loads all its namespace
# in the completion list.
sub addNamespace($$)
{
my ($self, $module) = @_;
my $namespace;
eval '$namespace = \%'.$module.'::';
if ($@) {
$self->error($@);
}
$self->addLog("loading namespace of $module");

foreach my $token (keys %$namespace) {
# only put methods found that begins with a letter
if ($token =~ /^([a-zA-Z]\S+)$/) {
$self->addCompletion([$1]);
}
}
}

# This function reads the command line and looks for something that is worth
# saving in the completion list
sub learn($$)
{
my ($self, $code) = @_;
my $env = $self->{lexical_environment}->get_context('_');
foreach my $var (keys %$env) {
$self->addCompletion([substr($var, 1)])
unless $self->is_completion(substr($var, 1));
}
}


# Thanks a lot to Devel::REPL for the Lexical::Persistence idea
# http://chainsawblues.vox.com/library/post/writing-a-perl-repl-part-3---lexical-environments.html
#
# We take the code given and build a sub around it, with each variable of the
# lexical environment declared with my's. Then, the sub built is evaluated
# in order to get its code reference, which is returned as the "compiled"
# code if success. If an error occured during the sub evaluation, undef is
# returned an the error message is sent to the console.
sub compile($$)
{
my ($self, $code) = @_;
# first we declare each variable in the lexical env
my $code_begin = "";
foreach my $var (keys %{$self->{lexical_environment}->get_context('_')}) {
$code_begin .= "my $var;\n";
}
# then we prefix the user's code with those variables init and put the
# resulting code inside a sub
$code = "sub {\n$code_begin\n$code;\n};\n";

# then we evaluate the sub in order to get its ref
my $compiled = eval "$code";
if ($@) {
$self->error("compilation error: $@");
return undef;
}
return $compiled;
}

# This function takes care of evaluating the inputed code
# in a way corresponding to the user's output choice.
sub evaluate($$)
{
my ($self, $code) = @_;

# compile the code to a coderef where each variables of the lexical
# environment are declared
$code = $self->compile($code);
return undef unless defined $code;

# wrap the compiled code with Lexical::Persitence
# in order to catch each variable in the lexenv
$code = $self->{lexical_environment}->wrap($code);
return undef unless defined $code && (ref($code) eq 'CODE');

# now evaluate the coderef pointed by the sub lexenv->wrap
# built for us
my @result = eval { &$code(); };

# an error occured?
if ($@) {
$self->error("Runtime error: $@");
return undef;
}
return \@result;
}

# This function is dedicated to print the result in the good way
# It takes the resulting array of the code evaluated and converts it
# to the wanted output
sub print_result
{
my ($self, $ra_result) = @_;
return unless defined $ra_result and (ref($ra_result) eq 'ARRAY');
my @result = @{$ra_result};
$self->message($self->get_output(@result));
}


# the outputs
sub get_output($@)
{
my ($self, @result) = @_;
my $output = $self->getPreference('output');

# default output is scalar
my $str = (@result == 1) ? $result[0] : @result;

# YAML output
if ($output eq 'yaml') {
eval '$str = YAML::Dump(@result)';
}

# Data::Dumper output
elsif ($output eq 'dumper') {
eval '$str = Data::Dumper::Dumper(@result)';
}

# Data::Dump output
elsif ($output eq 'dump') {
eval '$str = Data::Dump::dump(@result)';
}

# Data::Dump::Streamer output
elsif ($output eq 'dds') {
my $to_dump = (@result > 1) ? \@result : $result[0];
if (ref($to_dump)) {
eval 'my $dds = new Data::Dump::Streamer; '.
'$dds->Freezer(sub { return "$_[0]"; }); '.
'$dds->Data($to_dump); '.
'$str = $dds->Out;';
}
else {
return $to_dump;
}
}

if ($@) {
$self->error("Unable to get formated output: $@");
return "";
}
return $str;
}

# This looks for a use statement in the string and if so, try to
# load the module in the namespance, with all tags sepcified in qw()
# Returns 1 if the code given was about something to load, 0 else.
sub useModule($$)
{
my ($self, $code) = @_;
my $module;
my $tag;
if ($code =~ /use\s+(\S+)\s+qw\((.+)\)/) {
$module = $1;
$tag = $2;
}
elsif ($code =~ /use\s+(\S+)/) {
$module = $1;
}

if (defined $module) {
# drop the possible trailing ";"
$module =~ s/\s*;\s*$//;

if (!$self->load($module, $tag)) {
my $error = $@;
chomp $error;
$self->error($error);
}
else {
$self->addNamespace($module);
}
return 1;
}
return 0;
}

# this looks for internal command in the given string
# this is used for changing the user's preference, saving the session,
# loading a session, etc...
# The function returns 1 if it found something to do, 0 else.
sub command($$)
{
my ($self, $code) = @_;
return 0 unless $code;

if (PerlConsole::Commands->isInternalCommand($code)) {
return PerlConsole::Commands->execute($self, $code);
}
return 0;
}



# END
1;
perlconsole-0.4/lib/PerlConsole/Preferences.pm000064400000000000000000000043351131106407500214750ustar00rootroot00000000000000package PerlConsole::Preferences;

#
# This class hanldes all the preferences the user can change within the console.
#

use strict;
use warnings;

# The main data structure of the preferences,
# _valid_values contains list for each possible value.
sub init
{
my $self = {
_valid_values => {
output => ['scalar', 'dumper', 'yaml', 'dump', 'dds'],
},
_values => {
output => "scalar"
}
};
return $self;
}

# the help messages, dynamically built with the data structure
sub help($;$)
{
my ($self, $pref) = @_;
if (!defined $pref) {
return "You can set a preference in the console with the following syntax:\n".
":set <preference>=<value>\n".
"Available preferences are:\n\t- ".join("\n\t- ", keys(%{$self->{'_values'}}))."\n".
"see :help <preference> for details.";
}
else {
if (defined $self->{'_valid_values'}{$pref}) {
return "Valid values for preference \"$pref\" are: ".join(", ", @{$self->{'_valid_values'}{$pref}});
}
else {
return "No such preference: $pref";
}
}
}

# create an empty preference object, ready for being set
sub new
{
my ($class) = @_;
my $self = PerlConsole::Preferences::init();
bless($self, $class);
return $self;
}

# set a preference to a given value, making sure it's an available value, and
# that the value given is valid.
sub set($$$)
{
my ($self, $pref, $val) = @_;
unless (defined $self->{'_valid_values'}{$pref}) {
return 0;
}
unless (grep /$val/, @{$self->{'_valid_values'}{$pref}}) {
return 0;
}
$self->{'_values'}{$pref} = $val;
}

# retrurn the preference's value
sub get($$)
{
my ($self, $pref) = @_;
unless (exists $self->{'_values'}{$pref}) {
return 0;
}
return $self->{'_values'}{$pref};
}

# returns a list of all available preferences
sub getPreferences($)
{
my ($self) = @_;
return keys %{$self->{"_valid_values"}};
}

# returns a list of all possible values of a preference
sub getValidValues($$)
{
my ($self, $pref) = @_;
return [] unless defined $self->{'_valid_values'}{$pref};
return $self->{'_valid_values'}{$pref};
}


# END
1;
perlconsole-0.4/perlconsole000075500000000000000000000056351131106407500161620ustar00rootroot00000000000000#!/usr/bin/perl
# Copyright © 2007 Alexis Sukrieh
#
# 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 2 of the License, 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.

# Perl Console is a small program that lets you evaluates Perl code
# interactively. It uses Readline for grabing input and provide completion
# with all the namespaces loaded during your session.
# This is the main script of the program.

# strict mode
use strict;
use warnings;

# libs
use PerlConsole;
use PerlConsole::Console;

# Init our console
my $console = PerlConsole::Console->new($PerlConsole::VERSION);

# look for option in the commandline
$console->parse_options();

# display the header message
$console->header();

# source the rcfile first
$console->source_rcfile();

# Main REPL, prompting and waiting for code to evaluate
while (defined (my $code = $console->getInput())) {
$console->interpret($code);
}

# End, quitting.
$console->clean_exit(0);

__END__
=pod

=head1 NAME

perlconsole

=head1 COPYRIGHT

Perl Console is Copyright (C) 2007 by Alexis Sukrieh

=head1 DESCRIPTION

Perl Console is a small program that implements a Read-eval-print loop: it lets
you evaluate Perl code interactively.

It uses Readline to grab input, and provides completion with all the namespaces
loaded during your session. It allows you to load a module in your session and
test a function exported by it.

=head1 COMMANDS

It's possible to interact with the console with internal commands. The
following commands are supported in this version:

=over 4

=item B<:help> display the interactive help screen

=item B<:quit> quit the console

=item B<:set> set a preference (see PREFERENCES).

=back

=head1 RCFILE

PerlConsole will look for a rcfile located in your home directory called:
~/.perlconsolerc

Every line in that file will be evaluated as if they were issued in the console.
You can then load there your favorite modules, or even define your preferences.

Example of a valid ~/.perlconsolerc

:set output = dumper
use Date::Calc;


=head1 PREFERENCES

Preferences can be set with the B<:set> command. The following preferences are
supported in this version:

=over 4

=item B<output> changes the output of evaluated code

=back

For details about commands, ype :help <command> within the console.

=head1 AUTHOR

Perl Console was writen by Alexis Sukrieh <sukria@sukria.net>.

=cut
perlconsole-0.4/testfile000064400000000000000000000000001131106407500154260ustar00rootroot00000000000000
 
projeto & código: Vladimir Lettiev aka crux © 2004-2005, Andrew Avramenko aka liks © 2007-2008
mantenedor atual: Michael Shigorin
mantenedor da tradução: Fernando Martini aka fmartini © 2009