[29773] in Perl-Users-Digest
Perl-Users Digest, Issue: 1016 Volume: 11
daemon@ATHENA.MIT.EDU (Perl-Users Digest)
Thu Nov 8 18:09:39 2007
Date: Thu, 8 Nov 2007 15:09:05 -0800 (PST)
From: Perl-Users Digest <Perl-Users-Request@ruby.OCE.ORST.EDU>
To: Perl-Users@ruby.OCE.ORST.EDU (Perl-Users Digest)
Perl-Users Digest Thu, 8 Nov 2007 Volume: 11 Number: 1016
Today's topics:
cookie dbi based authentication <jcharth@gmail.com>
Re: cookie dbi based authentication <1usa@llenroc.ude.invalid>
make on TK fails on Solaris 10 mariakvelasco@gmail.com
Re: Newbie doesn't quite understand pointers with hashe <keeresarge@nowhere.com>
Re: Newbie doesn't quite understand pointers with hashe <keeresarge@nowhere.com>
Re: Newbie doesn't quite understand pointers with hashe <glex_no-spam@qwest-spam-no.invalid>
Perl + LAMP / PHP JOB jon.kay@mayfieldcurzon.com
Re: Perl + LAMP / PHP JOB <elsiddik@gmail.com>
Re: perl floating point problem <jl_post@hotmail.com>
Re: perl floating point problem <1usa@llenroc.ude.invalid>
Re: problems building perl modules, path question <glex_no-spam@qwest-spam-no.invalid>
Re: script to make font as a grid in plain text? <josef.moellers@fujitsu-siemens.com>
SOAP server & client problem <waleed.harbi@gmail.com>
SOAP server & client problem <waleed.harbi@gmail.com>
Sun and moon data program Nov. 8, 2007 <edgrsprj@ix.netcom.com>
Re: Sun and moon data program Nov. 8, 2007 <dlzc1@cox.net>
Digest Administrivia (Last modified: 6 Apr 01) (Perl-Users-Digest Admin)
----------------------------------------------------------------------
Date: Thu, 08 Nov 2007 13:56:23 -0800
From: joe <jcharth@gmail.com>
Subject: cookie dbi based authentication
Message-Id: <1194558983.064362.108310@z24g2000prh.googlegroups.com>
Hello I am currently using dbi authentication on my apache server to
query a table in my sql server for user/password information. Is there
a way to convert this authentication to cookie based authentication or
change the look and feel of the username/password window? thanks.
------------------------------
Date: Thu, 08 Nov 2007 22:34:03 GMT
From: "A. Sinan Unur" <1usa@llenroc.ude.invalid>
Subject: Re: cookie dbi based authentication
Message-Id: <Xns99E2B2B2125DBasu1cornelledu@127.0.0.1>
joe <jcharth@gmail.com> wrote in news:1194558983.064362.108310
@z24g2000prh.googlegroups.com:
> Hello I am currently using dbi authentication on my apache server to
> query a table in my sql server for user/password information. Is there
> a way to convert this authentication to cookie based authentication or
> change the look and feel of the username/password window? thanks.
I am sure we would all love to know how this is a topical question for this
group.
Sinan
--
A. Sinan Unur <1usa@llenroc.ude.invalid>
(remove .invalid and reverse each component for email address)
clpmisc guidelines: <URL:http://www.augustmail.com/~tadmc/clpmisc.shtml>
------------------------------
Date: Thu, 08 Nov 2007 14:38:52 -0800
From: mariakvelasco@gmail.com
Subject: make on TK fails on Solaris 10
Message-Id: <1194561532.826584.27960@q5g2000prf.googlegroups.com>
Hello,
We are in need of some help or suggestions. We are trying to build the
TK modules on Solaris 10. We downloaded Tk-804.027.tar.gz from CPAN
and extracted the compressed tarfile using gunzip and tar, then we
created the makefile by running the command perl Makefile.PL, which
succeeded. However, when we ran make, we get the following errors:
cd pTk && make DEFINE=""
cd zlib && make libz.a "CC=cc" RANLIB=":"
`libz.a' is up to date.
cc -c -I/usr/perl5/site_perl/5.8.4/sun4-solaris-64int/Tk -Ilibpng -
Izlib -I/usr/openwin/include -D_LARGEFILE_SOURCE -
D_FILE_OFFSET_BITS=64 -D_TS_ERRNO -DVERSION=\"4.003\" -DXS_VERSION=
\"800.025\" "-I/usr/perl5/5.8.4/lib/sun4-solaris-64int/CORE" PNG.c
PNG.xs:26: warning: data definition has no type or storage class
PNG.xs: In function `boot_Tk__PNG':
PNG.xs:35: `IMPORT_PHOTO' undeclared (first use in this function)
PNG.xs:35: (Each undeclared identifier is reported only once
PNG.xs:35: for each function it appears in.)
*** Error code 1
make: Fatal error: Command failed for target `PNG.o'
Current working directory /tmp/Tk-804.027/PNG
*** Error code 1
The following command caused the error:
cd PNG && make -f Makefile all LIBPERL_A="libperl.a"
LINKTYPE="dynamic" PREFIX="" OPTIMIZE="" PASTHRU_DEFINE=""
PASTHRU_INC=""
make: Fatal error: Command failed for target `subdirs'
We are using Perl version 5.8.4 on Solaris 10 and we have posted the
same question on www.cpanforum.com but have gotten no replies. We are
hoping someone on this might be able to help us out.
Does anyone have any suggestions on how to get rid of these errors?
Any help would be greatly appreciated, please.
Thanks!
------------------------------
Date: Thu, 08 Nov 2007 22:37:33 -0000
From: keersarge <keeresarge@nowhere.com>
Subject: Re: Newbie doesn't quite understand pointers with hashes.
Message-Id: <13j73tdo6arp6d3@corp.supernews.com>
> I don't understand why. I use forms inside of templates with
> HTML::Template, and I don't have any problems. There's a little more to
> it than with ordinary text, but I wouldn't describe it as "a can or worms."
>
> My suggestion: give it a shot, then ask here if you can't get it to
> work. I would use templates over the method you are attempting.
Ok. That is what I wanted to hear. When I first learned of templates, I
thought they were a great idea. Especially since my first attempts at
learning CGI were horrendous mishmashes of perl/html code that worked
pretty good as long as I was still actively building it. But going back
to it after a session on something else was a nightmare of trying to
remember what that particular routine was for.
As I said, my usually useful books either discourage forms in templates or
just flat don't talk about it at all so I will start looking for some
other place of info tomorrow at work. (My rural home dialup 24k phone
line does not make for fast surfing, alas)
Suggestions are appreciated.
Thanks a bunch
keersarge
------------------------------
Date: Thu, 08 Nov 2007 22:56:09 -0000
From: keersarge <keeresarge@nowhere.com>
Subject: Re: Newbie doesn't quite understand pointers with hashes.
Message-Id: <13j75098spp0f5a@corp.supernews.com>
>
> Or think about what may happen if someone from outside does gain access to
> the internal network and now finds all doors wide open.
>
> jue
Yes, someone could plant a wireless hub on a loose ethernet cable
somewhere, or even just the simple hack of plugging in a thumb drive. But
in this case it would get them nothing, unless they just want to commit
sabotage. Nothing on this network has any value to anyone -
no customer accounts, credit cards, financials, or even games. The odds
are extremely long that a hacker would even know what the data was about,
unless he has a control manual for an Urban 4020 2 point frame welder.
I know what network risk is. I have an active Snort monitor on the admin
network and am continually amazed that we can even get these messages
squeezed between the 'bots and the spam - especially since our company
domain name suggests a game developer. (we aren't)
But, back to the original post. I am not a Perl expert by a long shot,
or even a person very comfortable with the language yet, but I am far
enough along to realise that there is almost nothing that can't be done in
Perl. That is not to say that I know how to do most of it yet, but I am
willing to bet that there are at least a half dozen non-eval ways to
accomplish what I posted.
Thanks all
keersarge
------------------------------
Date: Thu, 08 Nov 2007 17:06:47 -0600
From: "J. Gleixner" <glex_no-spam@qwest-spam-no.invalid>
Subject: Re: Newbie doesn't quite understand pointers with hashes.
Message-Id: <47339687$0$10301$815e3792@news.qwest.net>
keersarge wrote:
[...]
> As I said, my usually useful books either discourage forms in templates or
I find that hard to believe.
A form element is nothing special and outside of some mark-up
elements/syntax a template is nothing special either, it doesn't
have to relate to HTML at all.
> just flat don't talk about it at all.
Why should a book about learning a language discuss templates?
Does it discuss using Class::DBI, Catalyst, and XML::Simple?
There are many different modules for doing templates, quite a
few of them have books covering, in detail, how to use the
particular module. There is also a lot of documentation for
most of them, all available online and once you download the
module the POD documentation, it will be available to you
without having to use the Internet.
------------------------------
Date: 8 Nov 2007 11:11:37 -0800
From: jon.kay@mayfieldcurzon.com
Subject: Perl + LAMP / PHP JOB
Message-Id: <1194515855.275703.211690@s15g2000prm.googlegroups.com>
I am a Manchester UK based recruiter. I am currently looking for Perl
Developers ideally with knowledge of PHP for a position based in the
North West of England. Where is the best place to advertise directly
to Perl Programmers?
Jon Kay
Mayfield Curzon Associates
jon.kay@mayfieldcurzon.com
0161 475 7014
------------------------------
Date: Thu, 08 Nov 2007 19:40:21 -0000
From: elsiddik <elsiddik@gmail.com>
Subject: Re: Perl + LAMP / PHP JOB
Message-Id: <1194550821.355137.35200@s15g2000prm.googlegroups.com>
On Nov 8, 8:11 pm, jon....@mayfieldcurzon.com wrote:
> I am a Manchester UK based recruiter. I am currently looking for Perl
> Developers ideally with knowledge of PHP for a position based in the
> North West of England. Where is the best place to advertise directly
> to Perl Programmers?
>
> Jon Kay
> Mayfield Curzon Associates
> jon....@mayfieldcurzon.com
> 0161 475 7014
Try http://jobs.perl.org/
cheers,
zaher el siddik
------------------------------
Date: Thu, 08 Nov 2007 14:26:10 -0800
From: "jl_post@hotmail.com" <jl_post@hotmail.com>
Subject: Re: perl floating point problem
Message-Id: <1194560770.808042.203690@y27g2000pre.googlegroups.com>
On Nov 8, 8:09 am, i...@oliverhallmann.de wrote:
>
> #!/usr/local/bin/perl
> my $i=2.55;
> $i=$i*100;
> print "$i\n";
> my $j=int($i);
> print "$j\n";
>
> output:
> 255
> 254
>
> can someone explain that to me?
Basically, you're wondering why:
if (2.55*100 == 255) {
print "Equal\n";
} else {
print "Not equal\n";
}
prints "Not equal" when 2.55 multiplied by 100 can't be anything but
255.
This is a behavior common to many languages and platforms, and not
just Perl. So let me begin by explaining it this way:
You know how impossible to represent some fractional numbers (such
as 1/3) in decimal notation? You might consider writing 1/3 as:
0.333
or as:
0.33333333333
or even:
0.3333333333333333333333333333333333333
But the truth is, no matter how many 3s you use, the number you write
will never fully equal 1/3 (note that this isn't true for 1/2, which
is easily written as 0.5).
(Yes, mathematicians will sometimes use a bar over the last 3 to
denote that it repeats indefinitely, but as far as I know, no computer
uses this notation.)
Well, certain numbers cannot be accurately represented in binary
notation, either. One such number is 2.55, the one you used in your
script.
The number 2.5 can be represented in binary notation like this:
10.1
(That's 2**1 + 0 + 2**-1.)
The number 2.625 can be represented in binary notation like this:
10.101
(That's 2**1 + 0 + 2**-1 + 0 + 2**-3.)
But the number 2.55 cannot be accurately represented in binary
notation. The closest Perl (and many computers) can come up with is:
10.100011001100110011001100110011001100110011001100110
(That's 2**1 + 0 + 2**-1 + 0 + 0 + 0 + 2**-5 + 2**-6 + etc.)
Notice that this number has a repeating part after its decimal
point (or should I say "binary point"?). Indeed, the "0011" part
repeats over and over. But your computer doesn't know about the
repeating part, so this number is as close as it'll get to 2.55
(which, admittedly, is VERY close). But even though this number is
very close to 2.55, it's technically still not exactly that.
Likewise, when you mutiply this number with 100, you get a number
that's very close to 255, but not quite that value. In fact, the
value Perl internally creates when you multiply 2.55 with 100 is:
11111110.111111111111111111111111111111111111111111111
which is roughly equivalent to 254.9999999999 .
Here's something fun to try: Try printing out the difference
between 255 and 2.55*100:
perl -le "print 255 - 2.55*100"
This will print out something like:
2.8421709430404e-014
The "e-014" part tells us that that's an extremely small number. Yet
it's still a non-zero number, meaning that Perl thinks that 2.55*100
is smaller (though not by much) than 255. And since 2.55*100 is
considered to be smaller than 255, it should now make sense that
int(2.55*100) returns 254 (instead of 255).
It just so happens that when we try to print out the value
2.55*100, it will round to the nearest 0.00000000... "something-place"
and print out 255, just like it will when running the following Perl
commands:
# These both print 255:
perl -le "print 2.55*100"
perl -le "print 254.99999999999999"
The reason it prints out "255" is not because Perl thinks the number
you passed it is 255, but rather one that rounds to 255 when printed.
So to Perl, 2.55*100 isn't equivalent to 255 -- it's just that the
print() statement rounds a value like 254.99999999999999 to 255 before
printing (since most humans would rather see it rounded to 255 since
it's so close).
I hope this explanation helps.
-- Jean-Luc Romano
P.S. You can read more about how Perl (and most computers) store
double precision numbers (and even single precision) in memory by
looking up "IEEE 754" in Wikipedia. You can jump right to it with
this link:
http://en.wikipedia.org/wiki/IEEE_754#Double-precision_64_bit
------------------------------
Date: Thu, 08 Nov 2007 22:40:09 GMT
From: "A. Sinan Unur" <1usa@llenroc.ude.invalid>
Subject: Re: perl floating point problem
Message-Id: <Xns99E2B3BAFB927asu1cornelledu@127.0.0.1>
info@oliverhallmann.de wrote in news:1194534585.375896.109600
@k35g2000prh.googlegroups.com:
> #!/usr/local/bin/perl
>
> my $i=2.55;
> $i=$i*100;
> print "$i\n";
> my $j=int($i);
> print "$j\n";
>
> output:
> 255
> 254
>
> can someone explain that to me?
perldoc -q 999
#!/usr/bin/perl
my $i = 2.55;
$i = $i * 100;
printf "%.0f\n", $i;
__END__
--
A. Sinan Unur <1usa@llenroc.ude.invalid>
(remove .invalid and reverse each component for email address)
clpmisc guidelines: <URL:http://www.augustmail.com/~tadmc/clpmisc.shtml>
------------------------------
Date: Thu, 08 Nov 2007 11:02:04 -0600
From: "J. Gleixner" <glex_no-spam@qwest-spam-no.invalid>
Subject: Re: problems building perl modules, path question
Message-Id: <4733410c$0$493$815e3792@news.qwest.net>
mmccaws2 wrote:
> On Nov 7, 1:29 pm, mmccaws2 <mmcc...@comcast.net> wrote:
[...]
> Could anyone help with this
>
> when I did
> chmod -R 644 /opt/perl_32/5.8.8
> it must of broke a link or pointer
Honestly, you should not have sudo/root access. Stop what
you are doing and run to an actual Systems Administrator, or
anyone in your company who knows anything about Unix, or
hire a contractor, and have THEM help you. By blindly
running commands, like the one above, you are really screwing
up your system.
------------------------------
Date: Thu, 08 Nov 2007 17:10:07 +0100
From: Josef Moellers <josef.moellers@fujitsu-siemens.com>
Subject: Re: script to make font as a grid in plain text?
Message-Id: <fgvcd2$ffe$1@nntp.fujitsu-siemens.com>
RedGrittyBrick wrote:
> T wrote:
>=20
>> I need to generate, from a truetype (Unicode) font a
>> [bitmap] pattern of the font in a certain size.=20
>=20
>=20
>>
>> Is there a script / module somewhere to do such thing ?
>>
>=20
> It seems unlikely to me. It looks like a rather rare and arcane sort of=
=20
> requirement. Wouldn't you have to pass the font data through a Truetype=
=20
> rendering engine so that the font's hinting algorithms are processed? I=
f=20
> the rendering engine doesn't have a method that delivers bitmap data to=
=20
> a normal IO stream then I guess you'd have to display it and scrape the=
=20
> bitmap off the display. If I was doing this I wouldn't pick Perl.
Untested:
Maybe you could use the ImageMagik packages to render the character into =
an image that you then load and dump.
--=20
These are my personal views and not those of Fujitsu Siemens Computers!
Josef M=F6llers (Pinguinpfleger bei FSC)
If failure had no penalty success would not be a prize (T. Pratchett)
Company Details: http://www.fujitsu-siemens.com/imprint.html
------------------------------
Date: Thu, 08 Nov 2007 18:10:16 -0000
From: Some1 <waleed.harbi@gmail.com>
Subject: SOAP server & client problem
Message-Id: <1194545416.551358.202310@i13g2000prf.googlegroups.com>
Hello All,
I have written SOAP client send two variables "two massages" , also I
have written SOAP server accept one variable. My problem I want the
soap server accept two variables "two massages" and replay with
results.
Helle.pm file
======================
package Hello;
sub sayHello {
shift;
return "Hello Jack" if shift eq "Jack";
die "Sorry..\n";
}
1;
hello.cgi
===============================
#!/usr/bin/perl -w
use lib '/var/www/cgi-bin/Hello';
use SOAP::Transport::HTTP;
SOAP::Transport::HTTP::CGI
-> dispatch_to('Hello::(?:sayHello)')
-> handle
;
#############################
Hello.pm and hello.cgi all of them in the same folder /var/www/cgi-bin
Now the soap client script hclient.pl:
===============================
#!/usr/bin/perl -w
use SOAP::Lite;
my $name = shift;
my $lname = shift ;
print "\n\nCalling the SOAP Server to say hello\n\n";
print "The SOAP Server says: \n";
print SOAP::Lite
-> uri('urn:Hello')
-> proxy('http://homesrv/cgi-bin/hello.cgi')
-> sayHello($name,$lname)
-> result . "\n\n";
##############################END##################################3
If I run "perl hclient.pl Jack" it is working fine, but when I tried
"perl hclient.pl Jack King" it will not work... why?
by the way Jack is variable 1 and King variable 2, I want my soap
server accept all the variables.
Could you please guide me where is my mistake or how to fix it?
------------------------------
Date: 8 Nov 2007 12:05:02 -0800
From: Some1 <waleed.harbi@gmail.com>
Subject: SOAP server & client problem
Message-Id: <1194545332.850868.267800@s15g2000prm.googlegroups.com>
Hello All,
I have written SOAP client send two variables "two massages" , also I
have written SOAP server accept one variable. My problem I want the
soap server accept two variables "two massages" and replay with
results.
Helle.pm file
======================
package Hello;
sub sayHello {
shift;
return "Hello Jack" if shift eq "Jack";
die "Sorry..\n";
}
1;
hello.cgi
===============================
#!/usr/bin/perl -w
use lib '/var/www/cgi-bin/Hello';
use SOAP::Transport::HTTP;
SOAP::Transport::HTTP::CGI
-> dispatch_to('Hello::(?:sayHello)')
-> handle
;
#############################
Hello.pm and hello.cgi all of them in the same folder /var/www/cgi-bin
Now the soap client script hclient.pl:
===============================
#!/usr/bin/perl -w
use SOAP::Lite;
my $name = shift;
my $lname = shift ;
print "\n\nCalling the SOAP Server to say hello\n\n";
print "The SOAP Server says: \n";
print SOAP::Lite
-> uri('urn:Hello')
-> proxy('http://homesrv/cgi-bin/hello.cgi')
-> sayHello($name,$lname)
-> result . "\n\n";
##############################END##################################3
If I run "perl hclient.pl Jack" it is working fine, but when I tried
"perl hclient.pl Jack King" it will not work... why?
by the way Jack is variable 1 and King variable 2, I want my soap
server accept all the variables.
Could you please guide me where is my mistake or how to fix it?
------------------------------
Date: Thu, 8 Nov 2007 12:13:09 -0600
From: "E.D.G." <edgrsprj@ix.netcom.com>
Subject: Sun and moon data program Nov. 8, 2007
Message-Id: <13j6kh9prckmn13@corp.supernews.com>
Topic 1 Sun And Moon Data Program Needed
Topic 2 Perl - Gnuplot Interface
TOPIC 1 SUN AND MOON DATA PROGRAM NEEDED
A freeware sun and moon location data generation computer program is needed
for use with an earthquake related computer program. Perl would be the
preferred language.
Information regarding where such a program can be obtained would be
appreciated.
--- It is essential that the data the program produces be completely
reliable.
--- The present plan is to circulate the program for free use along with a
package of Perl programs and data files.
--- Perl could call the data generation program if it is an external .exe
program. But it would be better if the source code were written in Perl
itself.
Another researcher and I developed such a program a while ago using the
TrueBasic language. But it has never been adequately tested. For a number
of years I have been using the U.S. Navy's MICA program to generate the
necessary data. But it is too slow and could not be circulated for free
with the previously mentioned package of programs.
Data needed from the sun and moon location program:
Subsolar location - The latitude and longitude of the position on the
Earth's surface that the sun is directly above. Any information regarding
sun location that could be used in calculations to get the subsolar location
would do.
Sublunar location - The latitude and longitude of the position on the
Earth's surface that the moon is directly above. Any information regarding
moon location that could be used in calculations to get the sublunar
location would do.
Distance between the Earth and the sun - It could be the distance between
their centers or between their surfaces. The centers distance would be
preferable.
Distance between the Earth and the moon - It could be the distance between
their centers or between their surfaces. The centers distance would be
preferable.
Other types of data such as the velocity of the Earth relative to the sun
and the velocity of the moon relative to the Earth would be helpful but
not essential.
TOPIC 2 PERL - GNUPLOT INTERFACE
Perl is a programming language somewhat similar to Basic. Gnuplot is a
freeware .exe program which will draw charts using data in a file. A
certain amount of computer code can also be generated using Gnuplot's own
internal language which is also something like Basic.
It took some time to learn how to link a Perl program with Gnuplot so that
interactive charts could be generated. But it was well worth the effort!
There is an example of one of these charts on the following Web page:
http://www.freewebz.com/eq-forecasting/Data.html
The Perl program and Gnuplot are both active at the same time. Perl
generates data, dumps it into a file, and instructs Gnuplot to produce a
chart. The results are presently somewhat similar to the charts that
Microsoft Excel can generate but with a much greater interactive capability.
They can include multiple, expandable plot lines and cursor lines that can
move left and right under control of the arrow keys.
Gnuplot was apparently not designed for interactive work. A completely new
chart has to be drawn each time a change is made such as moving the cursor
line. And only about two such changes can be made per second. That update
speed is adequate for my application.
The Gnuplot program which does the chart generation work is only 11 lines of
code. The Perl data generation and control interface program is about 400
lines of code. The entire Perl program I am using is about 4000 lines of
code.
The interface part of the Perl program is not presently in a form that I
could make it easily available for other people to use. But I could
describe how it works. And experienced programmers could easily duplicate
it.
------------------------------
Date: Thu, 08 Nov 2007 15:06:16 -0800
From: dlzc <dlzc1@cox.net>
Subject: Re: Sun and moon data program Nov. 8, 2007
Message-Id: <1194563176.048839.75600@y27g2000pre.googlegroups.com>
On Nov 8, 11:13 am, "E.D.G." <edgrs...@ix.netcom.com> wrote:
> Topic 1 Sun And Moon Data Program Needed
> Topic 2 Perl - Gnuplot Interface
>
> TOPIC 1 SUN AND MOON DATA PROGRAM NEEDED
>
> A freeware sun and moon location data generation computer program is needed
> for use with an earthquake related computer program. Perl would be the
> preferred language.
Quite a bit of stuff here, that might be able to be carved into what
you need:
http://www.freebsdsoftware.org/astro/
David A. Smith
------------------------------
Date: 6 Apr 2001 21:33:47 GMT (Last modified)
From: Perl-Users-Request@ruby.oce.orst.edu (Perl-Users-Digest Admin)
Subject: Digest Administrivia (Last modified: 6 Apr 01)
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------------------------------
End of Perl-Users Digest V11 Issue 1016
***************************************
