[28231] in Perl-Users-Digest
Perl-Users Digest, Issue: 9595 Volume: 10
daemon@ATHENA.MIT.EDU (Perl-Users Digest)
Sat Aug 12 11:05:48 2006
Date: Sat, 12 Aug 2006 08:05:07 -0700 (PDT)
From: Perl-Users Digest <Perl-Users-Request@ruby.OCE.ORST.EDU>
To: Perl-Users@ruby.OCE.ORST.EDU (Perl-Users Digest)
Perl-Users Digest Sat, 12 Aug 2006 Volume: 10 Number: 9595
Today's topics:
Can text in a Flash banner be changed by Perl? <tonywcharles@hotmail.com>
Re: Can text in a Flash banner be changed by Perl? <bart@nijlen.com>
How to crypt perl scrip? <info@perot.com>
Re: How to crypt perl scrip? <bik.mido@tiscalinet.it>
Re: How to crypt perl scrip? <news@lawshouse.org>
Re: How to crypt perl scrip? <nobull67@gmail.com>
Re: How to crypt perl scrip? <nobull67@gmail.com>
How to make image that show some web page? <maran@homewares.ro>
Re: How to make image that show some web page? <nobull67@gmail.com>
Re: Implicit iterator variable $_ changing to ### upon <benmorrow@tiscali.co.uk>
Re: Implicit iterator variable $_ changing to ### upon <bik.mido@tiscalinet.it>
Re: Implicit iterator variable $_ changing to ### upon <bik.mido@tiscalinet.it>
new CPAN modules on Sat Aug 12 2006 (Randal Schwartz)
Proposal: extending perldoc -f <bik.mido@tiscalinet.it>
Re: Proposal: extending perldoc -f usenet@DavidFilmer.com
Re: Proposal: extending perldoc -f <bik.mido@tiscalinet.it>
Re: Proposal: extending perldoc -f <nobull67@gmail.com>
Re: Read socket using both <> and sysread() <ynleder@nspark.org>
Digest Administrivia (Last modified: 6 Apr 01) (Perl-Users-Digest Admin)
----------------------------------------------------------------------
Date: 12 Aug 2006 01:00:12 -0700
From: "Tony" <tonywcharles@hotmail.com>
Subject: Can text in a Flash banner be changed by Perl?
Message-Id: <1155369612.927943.154060@m79g2000cwm.googlegroups.com>
I'd like to create a small Flash banner with an animated section at the
top, and a still section at the bottom which will contain a short line
of text.
Once the Flash file has been created, is there any way to change the
text along the bottom, from within a Perl script?
I need to produce lots of these little banners, each one customised for
the website it will appear on (ie. the text at the bottom will contain
the name of the website).
I'd prefer a Perl solution, but if that's not possible, maybe someone
with Flash know-how can tell me if the Flash banner can load the text
from an ini file?
------------------------------
Date: 12 Aug 2006 03:58:53 -0700
From: "Bart Van der Donck" <bart@nijlen.com>
Subject: Re: Can text in a Flash banner be changed by Perl?
Message-Id: <1155380333.406041.290500@i3g2000cwc.googlegroups.com>
Tony wrote:
> I'd like to create a small Flash banner with an animated section at the
> top, and a still section at the bottom which will contain a short line
> of text.
>
> Once the Flash file has been created, is there any way to change the
> text along the bottom, from within a Perl script?
>
> I need to produce lots of these little banners, each one customised for
> the website it will appear on (ie. the text at the bottom will contain
> the name of the website).
>
> I'd prefer a Perl solution, but if that's not possible, maybe someone
> with Flash know-how can tell me if the Flash banner can load the text
> from an ini file?
There are better marriages than Perl and Flash. I would code a small
ActionScript in Flash that takes its content from an external file. No
further code needed then from any other language.
--
Bart
------------------------------
Date: Sat, 12 Aug 2006 12:24:09 +0200
From: <info@perot.com>
Subject: How to crypt perl scrip?
Message-Id: <ebka89$e7i$1@ss408.t-com.hr>
Is possible to crypt Perl script that user can start it, but can’t read, if
script is copied to his computer?
Thanks
------------------------------
Date: 12 Aug 2006 14:52:04 +0200
From: Michele Dondi <bik.mido@tiscalinet.it>
Subject: Re: How to crypt perl scrip?
Message-Id: <omjrd290aqu2v7knpqhqgf705uuciale4t@4ax.com>
On Sat, 12 Aug 2006 12:24:09 +0200, <info@perot.com> wrote:
>Is possible to crypt Perl script that user can start it, but can’t read, if
>script is copied to his computer?
Oh no! Once again...
perldoc -q hide
Michele
--
{$_=pack'B8'x25,unpack'A8'x32,$a^=sub{pop^pop}->(map substr
(($a||=join'',map--$|x$_,(unpack'w',unpack'u','G^<R<Y]*YB='
.'KYU;*EVH[.FHF2W+#"\Z*5TI/ER<Z`S(G.DZZ9OX0Z')=~/./g)x2,$_,
256),7,249);s/[^\w,]/ /g;$ \=/^J/?$/:"\r";print,redo}#JAPH,
------------------------------
Date: Sat, 12 Aug 2006 13:56:15 +0100
From: Henry Law <news@lawshouse.org>
Subject: Re: How to crypt perl scrip?
Message-Id: <1155387375.42596.0@iris.uk.clara.net>
info@perot.com wrote:
> Is possible to crypt Perl script that user can start it, but can’t read, if
> script is copied to his computer?
I think you mean to ask whether a Perl program can be written such that
it can be run but its source not read by whoever runs it. If that's the
case then the FAQ will answer you. So too will Google, because the
question is asked in this group often enough for it to be easily available.
The FAQ's on the web, or type perldoc -q hide on a command line.
If that's not your question - if you really do want to encrypt your Perl
program - then I'm sorry.
--
Henry Law <>< Manchester, England
------------------------------
Date: 12 Aug 2006 06:28:26 -0700
From: "Brian McCauley" <nobull67@gmail.com>
Subject: Re: How to crypt perl scrip?
Message-Id: <1155389306.660004.257310@75g2000cwc.googlegroups.com>
info@perot.com wrote:
> Is possible to crypt Perl script that user can start it, but can't read, if
> script is copied to his computer?
What you are talking about is something called "trusted computing". It
has little to do with specific languages and is largely an OS and
hardware issue. Note that under the trusted computer model "his
computer" becomes "a computer he is allowed to use" because no
individuals will truely be able to own computers any more.
With a TC OS and hardware you (the program author) could create a file
that instructs the computer that the file is only to be processed by a
special signed (and crippled) version of the the perl interpreter. You
could _trust_ that the computer would place your wishes ahead of those
of the user. Likewise the user would have to take it on _trust_ that
you were not abusing this privileged position. (These are 2/3 of the
places where the "trust" in "trusted computing" comes in).
Note that this is a moral, political, ecomonic, ethical, legal,
technical bag of worms. Note also that actually implementing what I've
said above may infringe the licences of some open source components
that you may have used.
If you are willing to change "can't read" to "can't casually read"
then you don't need true crypto and obfuscation (as per FAQ answer)
will suffice.
------------------------------
Date: 12 Aug 2006 06:54:39 -0700
From: "Brian McCauley" <nobull67@gmail.com>
Subject: Re: How to crypt perl scrip?
Message-Id: <1155390879.804017.278340@h48g2000cwc.googlegroups.com>
Brian McCauley wrote:
> info@perot.com wrote:
>
> > Is possible to crypt Perl script that user can start it, but can't read, if
> > script is copied to his computer?
>
> What you are talking about is something called "trusted computing".
I should correct myself here as I appear to have given a false
inpression.
There are two aspects to "trusted computing". On aspect is that a
computer will only execute programs that are signed by a trusted party.
The other is the ability for the programmer to trust that the computer
will place his wishes above those of the user.
It is quite possible to have the first part (which is very helpful to
the end user) without the second. So long as the ultimate choice as to
whom to trust (choice of root authority) remains with the owner of the
computer there's no downside to the first part.
What the OP was asking about was the second part. Which is also the
part of TC which has the potential to be abused by large coporations
and corrupt(able) politicians.
I'll shut up now as this isn't really the place for this.
------------------------------
Date: Sat, 12 Aug 2006 15:52:54 +0200
From: <maran@homewares.ro>
Subject: How to make image that show some web page?
Message-Id: <ebkmfm$60d$1@ss408.t-com.hr>
How to make image (jpg or gif) that show some web page?
Is it possible with perl language?
Tnx
Martan
------------------------------
Date: 12 Aug 2006 07:10:34 -0700
From: "Brian McCauley" <nobull67@gmail.com>
Subject: Re: How to make image that show some web page?
Message-Id: <1155391834.851593.33410@h48g2000cwc.googlegroups.com>
maran@homewares.ro wrote:
> How to make image (jpg or gif) that show some web page?
What do you mean by "show some web page"?
Do you mean generate a static image of what a web page would look like
when viewed by some browser?
If so see recent thread on this exact question.
Or are you asking if either of the image formats supports hotlinks? I
think not, you usually would achive this with an HTML file that embeds
the image and has an imagemap. There are also richer image-like
formats (PDF, Flash, SVG) that do support hyperlinks. (I could of
course be wrong - this as nothing to do with Perl).
> Is it possible with perl language?
Writing a full-featured graphical web browser in Perl would
theoretically be possible but not practical.
Using Perl to remotely control "mechanise" an existing graphical web
browser is a well established technique.
Using Perl to write HTML is also a well established technique.
------------------------------
Date: Sat, 12 Aug 2006 02:52:39 +0100
From: Ben Morrow <benmorrow@tiscali.co.uk>
Subject: Re: Implicit iterator variable $_ changing to ### upon variable assignment?
Message-Id: <7sovq3-vhl.ln1@osiris.mauzo.dyndns.org>
Quoth Michele Dondi <bik.mido@tiscalinet.it>:
> On 11 Aug 2006 13:34:56 -0700, "Derek Basch" <dbasch@yahoo.com> wrote:
>
> you want to pass $_ to both methods above. Also the fact that
> accessors() returns an array of accessor names suggest that you are
> fiddling with symrefs.
Methods are looked up by name at runtime, so they're effectively symrefs
anyway.
> You may return proper $method refs, and call
> them like thus instead:
>
> my $value = $self->$method(...);
...but whay would be the advantage in doing so, except in rather weird
circumstances?
Ben
--
Although few may originate a policy, we are all able to judge it.
Pericles of Athens, c.430 B.C.
benmorrow@tiscali.co.uk
------------------------------
Date: 12 Aug 2006 10:04:38 +0200
From: Michele Dondi <bik.mido@tiscalinet.it>
Subject: Re: Implicit iterator variable $_ changing to ### upon variable assignment?
Message-Id: <hn2rd2hr4g6u7dgbcgie73jqajsg25t0h6@4ax.com>
On Sat, 12 Aug 2006 02:52:39 +0100, Ben Morrow
<benmorrow@tiscali.co.uk> wrote:
>> my $value = $self->$method(...);
>
>...but whay would be the advantage in doing so, except in rather weird
>circumstances?
Hmmm... now that you make me think about it better, I'm not really
sure. For one thing I like the syntax and the semantics of the
construct, but I understand this is far from being a really good
reason. Also, it seems that I partially misunderstood the OP's
problem.
Michele
--
{$_=pack'B8'x25,unpack'A8'x32,$a^=sub{pop^pop}->(map substr
(($a||=join'',map--$|x$_,(unpack'w',unpack'u','G^<R<Y]*YB='
.'KYU;*EVH[.FHF2W+#"\Z*5TI/ER<Z`S(G.DZZ9OX0Z')=~/./g)x2,$_,
256),7,249);s/[^\w,]/ /g;$ \=/^J/?$/:"\r";print,redo}#JAPH,
------------------------------
Date: 12 Aug 2006 10:17:08 +0200
From: Michele Dondi <bik.mido@tiscalinet.it>
Subject: Re: Implicit iterator variable $_ changing to ### upon variable assignment?
Message-Id: <933rd2dk1ihtgqr42tge4anim2i5b7ghvt@4ax.com>
On 11 Aug 2006 15:22:43 -0700, "Derek Basch" <dbasch@yahoo.com> wrote:
>> >$self->_accessor_class returns a hash ref to a class
^^^^^^^^^^^^^^^^^^^^^
^^^^^^^^^^^^^^^^^^^^^
>> Which happens to be... what?!?
>
>A subclass of Class::Accessor.
I meant that I had, and have, problems with the expression "hash ref
*to* a class".
>and isn't that exactly what a class hash reference is in Perl?
It seems that in the end you're more knowledgeable than I am, because
as above I don't have the slightest idea of what a "class hash
reference" could be. A class is a package. The only hash that comes to
mind speaking of the latter, is its stash. Or else objects are often
implemented by means of blessed hash references "containing" the data,
but that's just one implementation choice. In any case I'm not really
sure about what you're talking about and I must be missing something,
sorry!
Michele
--
{$_=pack'B8'x25,unpack'A8'x32,$a^=sub{pop^pop}->(map substr
(($a||=join'',map--$|x$_,(unpack'w',unpack'u','G^<R<Y]*YB='
.'KYU;*EVH[.FHF2W+#"\Z*5TI/ER<Z`S(G.DZZ9OX0Z')=~/./g)x2,$_,
256),7,249);s/[^\w,]/ /g;$ \=/^J/?$/:"\r";print,redo}#JAPH,
------------------------------
Date: Sat, 12 Aug 2006 04:42:08 GMT
From: merlyn@stonehenge.com (Randal Schwartz)
Subject: new CPAN modules on Sat Aug 12 2006
Message-Id: <J3vBq8.7xD@zorch.sf-bay.org>
The following modules have recently been added to or updated in the
Comprehensive Perl Archive Network (CPAN). You can install them using the
instructions in the 'perlmodinstall' page included with your Perl
distribution.
Catalyst-Model-File-0.03
http://search.cpan.org/~ash/Catalyst-Model-File-0.03/
File based storage model for Catalyst.
----
Catalyst-Plugin-Breadcrumbs-5
http://search.cpan.org/~tigris/Catalyst-Plugin-Breadcrumbs-5/
Breadcrumb information for your templates.
----
DateTime-0.34
http://search.cpan.org/~drolsky/DateTime-0.34/
A date and time object
----
Genezzo-0.63
http://search.cpan.org/~jcohen/Genezzo-0.63/
an extensible database with SQL and DBI
----
HTML-Tested-0.18
http://search.cpan.org/~bosu/HTML-Tested-0.18/
Provides HTML widgets with the built-in means of testing.
----
IMAP-Client-0.11
http://search.cpan.org/~conteb/IMAP-Client-0.11/
Advanced manipulation of IMAP services w/ referral support
----
IO-Socket-SSL-0.998
http://search.cpan.org/~sullr/IO-Socket-SSL-0.998/
Nearly transparent SSL encapsulation for IO::Socket::INET.
----
Lab-Tools-1.01
http://search.cpan.org/~schroeer/Lab-Tools-1.01/
----
Mail-DomainKeys-0.84
http://search.cpan.org/~anthonyu/Mail-DomainKeys-0.84/
A perl implementation of DomainKeys
----
Mail-Karmasphere-Client-1.17
http://search.cpan.org/~shevek/Mail-Karmasphere-Client-1.17/
Client for Karmasphere Reputation Server
----
Net-Whois-Raw-1.11
http://search.cpan.org/~despair/Net-Whois-Raw-1.11/
Get Whois information for domains
----
PAR-0.950
http://search.cpan.org/~smueller/PAR-0.950/
Perl Archive Toolkit
----
PAR-Dist-0.16
http://search.cpan.org/~smueller/PAR-Dist-0.16/
Create and manipulate PAR distributions
----
PAR-Repository-0.03
http://search.cpan.org/~smueller/PAR-Repository-0.03/
Create and modify PAR repositories
----
PAR-Repository-Client-0.03
http://search.cpan.org/~smueller/PAR-Repository-Client-0.03/
Access PAR repositories
----
POE-Component-DirWatch-Object-0.02
http://search.cpan.org/~groditi/POE-Component-DirWatch-Object-0.02/
POE directory watcher object
----
Parse-CSV-0.02
http://search.cpan.org/~adamk/Parse-CSV-0.02/
Highly flexible CVS parser for large files
----
Test-Assertions-1.054
http://search.cpan.org/~bbc/Test-Assertions-1.054/
a simple set of building blocks for both unit and runtime testing
----
WWW-MySpaceBot-0.01
http://search.cpan.org/~kirsle/WWW-MySpaceBot-0.01/
A libwww-perl interface to MySpace.
----
WWW-TV-0.03.1
http://search.cpan.org/~tigris/WWW-TV-0.03.1/
Parse TV.com for information about TV shows.
----
WWW-TV-0.04
http://search.cpan.org/~tigris/WWW-TV-0.04/
Parse TV.com for information about TV shows.
----
Wx-0.56
http://search.cpan.org/~mbarbon/Wx-0.56/
interface to the wxWidgets cross-platform GUI toolkit
----
extproc_perl-2.51
http://search.cpan.org/~jhorwitz/extproc_perl-2.51/
If you're an author of one of these modules, please submit a detailed
announcement to comp.lang.perl.announce, and we'll pass it along.
This message was generated by a Perl program described in my Linux
Magazine column, which can be found on-line (along with more than
200 other freely available past column articles) at
http://www.stonehenge.com/merlyn/LinuxMag/col82.html
print "Just another Perl hacker," # the original
--
Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095
<merlyn@stonehenge.com> <URL:http://www.stonehenge.com/merlyn/>
Perl/Unix/security consulting, Technical writing, Comedy, etc. etc.
See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training!
------------------------------
Date: 12 Aug 2006 11:23:22 +0200
From: Michele Dondi <bik.mido@tiscalinet.it>
Subject: Proposal: extending perldoc -f
Message-Id: <3o5rd2lg8k6reckp2u95v44os9n1m7o7uh@4ax.com>
Ok, I know that "proposals" tend not to get much success. Whatever, I
hope at least to raise some discussion and since some regulars here do
edit the docs, they may value whether this humble proposal of mine
makes at least some sense...
In giving answer to newbies we often point them to perldoc -f for some
particular function. And it is a precious tool even for someone
already familiar with it. Now, one added bonus of the tool is that it
carries some information about bits of syntax that do not correspond
to actual functions, e.g.
perldoc -f my
perldoc -f last
perldoc -f m
This is mostly precious IMHO, since at least it points to the correct
perldoc entry, which may not be obvious at first, especially to a
newbie. So why not extending this to any possible keyword? I mean:
it's not that each entry should contain exhaustive information, just a
brief note with a pointer to the actual documentation
For example, currently this is what happens:
$ ^m^while
perldoc -f while
No documentation for perl function `while' found
Instead it my say something like "Not a function, but a looping
construct, see perlsyn".
Michele
--
{$_=pack'B8'x25,unpack'A8'x32,$a^=sub{pop^pop}->(map substr
(($a||=join'',map--$|x$_,(unpack'w',unpack'u','G^<R<Y]*YB='
.'KYU;*EVH[.FHF2W+#"\Z*5TI/ER<Z`S(G.DZZ9OX0Z')=~/./g)x2,$_,
256),7,249);s/[^\w,]/ /g;$ \=/^J/?$/:"\r";print,redo}#JAPH,
------------------------------
Date: 12 Aug 2006 02:55:57 -0700
From: usenet@DavidFilmer.com
Subject: Re: Proposal: extending perldoc -f
Message-Id: <1155376557.087963.74700@m79g2000cwm.googlegroups.com>
Michele Dondi wrote:
> For example, currently this is what happens:
> perldoc -f while
> No documentation for perl function `while' found
I also once wondered about this. See http://tinyurl.com/fev6y
I STILL believe the question I raised in this post illustrates a
fundamental flaw in the perldocs (as some respected posters (such as
Tassilo) agreed). I believe the distinction between "control
structures" and "functions" (which some posters indicated) is somewhat
arbritray in this context (and which is not consistently evidenced in
the perldocs) and is certinally not usually apparent to novice
programmers (ie, those who are most likely to benefit from the perldocs
in the first place). The perldocs are, at best, arbitrary in this
distinction (whereas, IMHO, they should default to being fully
inclusive).
IMHO, EACH AND EVERY Perl keyword should resolve by "perodoc -f" even
if it simply points to a more relevant perldoc (as you, Michelle,
wisely imply).
--
David Filmer (http://DavidFilmer.com)
------------------------------
Date: 12 Aug 2006 14:57:58 +0200
From: Michele Dondi <bik.mido@tiscalinet.it>
Subject: Re: Proposal: extending perldoc -f
Message-Id: <2ojrd2hdjcdd6cn4ar8i6vpai7d07s1gmc@4ax.com>
On 12 Aug 2006 02:55:57 -0700, usenet@DavidFilmer.com wrote:
>IMHO, EACH AND EVERY Perl keyword should resolve by "perodoc -f" even
>if it simply points to a more relevant perldoc (as you, Michelle,
>wisely imply).
Nice to see that you, along with a bunch of well respected regulars,
agree with me, and obviously I second all of what you wrote up to my
name which does not happen to be Michelle -a french feminine name-,
but Michele -an italian masculine name-.
;-)
Michele
--
{$_=pack'B8'x25,unpack'A8'x32,$a^=sub{pop^pop}->(map substr
(($a||=join'',map--$|x$_,(unpack'w',unpack'u','G^<R<Y]*YB='
.'KYU;*EVH[.FHF2W+#"\Z*5TI/ER<Z`S(G.DZZ9OX0Z')=~/./g)x2,$_,
256),7,249);s/[^\w,]/ /g;$ \=/^J/?$/:"\r";print,redo}#JAPH,
------------------------------
Date: 12 Aug 2006 05:58:28 -0700
From: "Brian McCauley" <nobull67@gmail.com>
Subject: Re: Proposal: extending perldoc -f
Message-Id: <1155387508.112708.313130@m79g2000cwm.googlegroups.com>
Michele Dondi wrote:
> For example, currently this is what happens:
>
> $ ^m^while
> perldoc -f while
> No documentation for perl function `while' found
>
> Instead it my say something like "Not a function, but a looping
> construct, see perlsyn".
I've seen this suggested a few I must admit I'd kinda assumed it had
already happened.
It should happen. This is simply a case of adding a few entries to
perlfunc.pod.
------------------------------
Date: Sat, 12 Aug 2006 13:21:32 +0200
From: Yohan N. Leder <ynleder@nspark.org>
Subject: Re: Read socket using both <> and sysread()
Message-Id: <MPG.1f47d823f4160efd9897cc@news.free.fr>
In article <MPG.1f428e8e79cfda619898ad@news.tiscali.fr>,
ynleder@nspark.org says...
> Hello. In the framework of a dialog with an ESMTP server, I would like
> to alternate some incoming socket reading using <> (when server replies
> with a single line) and sysread() (when server replies with several
> lines), is there something to take care with this kind of alternance ?
>
Hi all. Sorry to reply here in the thread (I mean : to myself), but I've
experienced problem with my newsreader and/or news server these last
days and just seen all of your replies today only (oops) ; using another
news server and reader from another station... Also, since I've now
solved my problem without being aware of your opinions, it becomes
unuseful to reply back to every of your posts.
Well, I've well understood the difference between <> (which wait for and
read a one line only) and sysread (which read a certain amount of data)
and the buffer considerations. Also as some of you said : it's possible
to mix both method in a context where we well know what is returned by
server : which is the case in an SMTP communication. Because of this,
I've kept this mixing way and keep an eye on the behavior of this part
of the script : however, it would be quite easy to switch all <> to a
sysread() call a day or another if useful in practice.
Thanks again.
Now, I have to figure-out if its my newsreader or the news server I'm
going through which has problem these days.
------------------------------
Date: 6 Apr 2001 21:33:47 GMT (Last modified)
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Subject: Digest Administrivia (Last modified: 6 Apr 01)
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------------------------------
End of Perl-Users Digest V10 Issue 9595
***************************************
