RE: regular expression in a variable
You're not being very clear what it is you're trying to do. I can see
two ways of interpreting this.
Regular expressions are mostly for checking the format of text to see if
certain conditions match. You might be asking how to do this:
use strict;
use warnings;
opendir(DIR,.) or die(Couldn't open the current directory!\n);
my @files = readdir(DIR);
foreach my $file(sort @files){
if($file =~ /(.*test.*)/i){
print MATCH: $file\n;
}
}
#
You can also use the $1 variable to capture the last text string that
matched the part of the regular expression between the parentheses.
If, on the other hand, you're trying to generate file names, then
regular expressions aren't what you're looking for.
my $prefix = 123;
my $postfix = 456;
my $filename = $prefix.test.$postfix;
print $filename.\n;
-Original Message-
From: Curt Shaffer [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 28, 2006 12:20 PM
To: beginners@perl.org
Subject: regular expression in a variable
I need to set a variable to a filename where only 1 section of the file
is
static.
For example:
$filename =~ /test/;
Where the following:
Print $filename\n;
Would produce:
123test456.txt
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RE: regular expression in a variable
So what part are you stuck on then? It looks like the first suggestion
gets you the $filename you want. All you have to do after that is move
it.
(you can change it so it isn't looking in the current directory with the
opendir line, but if you do, don't forget that you can't move the files
by filename alone, you must add the path as a prefix)
-Original Message-
From: Curt Shaffer [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 28, 2006 12:42 PM
To: Timothy Johnson; beginners@perl.org
Subject: RE: regular expression in a variable
Thanks for the response. Let me try to clear things up. The second
solution
will not work for me because the other parts of the filename will be
unknown. The only part I know will always be in the filename is test
(only
an example).
So the full story is this:
I need to look in a directory to see if a file with test in the name
exists. If it does I need to move that file to a staging directory to be
sftp'd out to a vendor. The manner in which I am doing that is to move
the
file named $filename (whose value is the result of the regex match) to
the
staging directory. Then sftp the $filename to the appropriate place.
Does that help a bit? If not I apologize.
Curt
-Original Message-
From: Timothy Johnson [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 28, 2006 3:30 PM
To: Curt Shaffer; beginners@perl.org
Subject: RE: regular expression in a variable
You're not being very clear what it is you're trying to do. I can see
two ways of interpreting this.
Regular expressions are mostly for checking the format of text to see if
certain conditions match. You might be asking how to do this:
use strict;
use warnings;
opendir(DIR,.) or die(Couldn't open the current directory!\n);
my @files = readdir(DIR);
foreach my $file(sort @files){
if($file =~ /(.*test.*)/i){
print MATCH: $file\n;
}
}
#
You can also use the $1 variable to capture the last text string that
matched the part of the regular expression between the parentheses.
If, on the other hand, you're trying to generate file names, then
regular expressions aren't what you're looking for.
my $prefix = 123;
my $postfix = 456;
my $filename = $prefix.test.$postfix;
print $filename.\n;
-Original Message-
From: Curt Shaffer [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 28, 2006 12:20 PM
To: beginners@perl.org
Subject: regular expression in a variable
I need to set a variable to a filename where only 1 section of the file
is
static.
For example:
$filename =~ /test/;
Where the following:
Print $filename\n;
Would produce:
123test456.txt
--
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
http://learn.perl.org/ http://learn.perl.org/first-response
RE: regular expression in a variable
That appears to work! The part I am stuck on is how to I take that value
(which would now be $file in your example) and put it into a variable that I
can use through the rest of the script. When I then try to use $file outside
of that routine, it is no longer the same value.
I really appreciate your help!
-Original Message-
From: Timothy Johnson [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 28, 2006 3:47 PM
To: Curt Shaffer; beginners@perl.org
Subject: RE: regular expression in a variable
So what part are you stuck on then? It looks like the first suggestion
gets you the $filename you want. All you have to do after that is move
it.
(you can change it so it isn't looking in the current directory with the
opendir line, but if you do, don't forget that you can't move the files
by filename alone, you must add the path as a prefix)
-Original Message-
From: Curt Shaffer [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 28, 2006 12:42 PM
To: Timothy Johnson; beginners@perl.org
Subject: RE: regular expression in a variable
Thanks for the response. Let me try to clear things up. The second
solution
will not work for me because the other parts of the filename will be
unknown. The only part I know will always be in the filename is test
(only
an example).
So the full story is this:
I need to look in a directory to see if a file with test in the name
exists. If it does I need to move that file to a staging directory to be
sftp'd out to a vendor. The manner in which I am doing that is to move
the
file named $filename (whose value is the result of the regex match) to
the
staging directory. Then sftp the $filename to the appropriate place.
Does that help a bit? If not I apologize.
Curt
-Original Message-
From: Timothy Johnson [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 28, 2006 3:30 PM
To: Curt Shaffer; beginners@perl.org
Subject: RE: regular expression in a variable
You're not being very clear what it is you're trying to do. I can see
two ways of interpreting this.
Regular expressions are mostly for checking the format of text to see if
certain conditions match. You might be asking how to do this:
use strict;
use warnings;
opendir(DIR,.) or die(Couldn't open the current directory!\n);
my @files = readdir(DIR);
foreach my $file(sort @files){
if($file =~ /(.*test.*)/i){
print MATCH: $file\n;
}
}
#
You can also use the $1 variable to capture the last text string that
matched the part of the regular expression between the parentheses.
If, on the other hand, you're trying to generate file names, then
regular expressions aren't what you're looking for.
my $prefix = 123;
my $postfix = 456;
my $filename = $prefix.test.$postfix;
print $filename.\n;
-Original Message-
From: Curt Shaffer [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 28, 2006 12:20 PM
To: beginners@perl.org
Subject: regular expression in a variable
I need to set a variable to a filename where only 1 section of the file
is
static.
For example:
$filename =~ /test/;
Where the following:
Print $filename\n;
Would produce:
123test456.txt
--
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
http://learn.perl.org/ http://learn.perl.org/first-response
RE: regular expression in a variable
Curt Shaffer wrote:
That appears to work! The part I am stuck on is how to I take that
value (which would now be $file in your example) and put it into a
variable that I can use through the rest of the script. When I then
try to use $file outside of that routine, it is no longer the same
value.
I really appreciate your help!
So are you trying to collect all the files up front and then go through
the processing? You already have the test in the loop and could just write a
subroutine and pass it $file and do all your work there.
If you want to hold on to those fiels which match your criteria, then
use another array to capture as in
@matchedfiles = grep( /*.test.*/, @files );
Either way, you have the data in place or the other.
Wags ;)
-Original Message-
From: Timothy Johnson [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 28, 2006 3:47 PM
To: Curt Shaffer; beginners@perl.org
Subject: RE: regular expression in a variable
So what part are you stuck on then? It looks like the first
suggestion gets you the $filename you want. All you have to do after
that is move
it.
(you can change it so it isn't looking in the current directory with
the opendir line, but if you do, don't forget that you can't move the
files
by filename alone, you must add the path as a prefix)
-Original Message-
From: Curt Shaffer [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 28, 2006 12:42 PM
To: Timothy Johnson; beginners@perl.org
Subject: RE: regular expression in a variable
Thanks for the response. Let me try to clear things up. The second
solution
will not work for me because the other parts of the filename will be
unknown. The only part I know will always be in the filename is test
(only
an example).
So the full story is this:
I need to look in a directory to see if a file with test in the name
exists. If it does I need to move that file to a staging directory to
be sftp'd out to a vendor. The manner in which I am doing that is to
move
the
file named $filename (whose value is the result of the regex match) to
the
staging directory. Then sftp the $filename to the appropriate place.
Does that help a bit? If not I apologize.
Curt
-Original Message-
From: Timothy Johnson [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 28, 2006 3:30 PM
To: Curt Shaffer; beginners@perl.org
Subject: RE: regular expression in a variable
You're not being very clear what it is you're trying to do. I can see
two ways of interpreting this.
Regular expressions are mostly for checking the format of text to see
if certain conditions match. You might be asking how to do this:
use strict;
use warnings;
opendir(DIR,.) or die(Couldn't open the current directory!\n);
my @files = readdir(DIR);
foreach my $file(sort @files){
if($file =~ /(.*test.*)/i){
print MATCH: $file\n;
}
}
#
You can also use the $1 variable to capture the last text string that
matched the part of the regular expression between the parentheses.
If, on the other hand, you're trying to generate file names, then
regular expressions aren't what you're looking for.
my $prefix = 123;
my $postfix = 456;
my $filename = $prefix.test.$postfix;
print $filename.\n;
-Original Message-
From: Curt Shaffer [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 28, 2006 12:20 PM
To: beginners@perl.org
Subject: regular expression in a variable
I need to set a variable to a filename where only 1 section of the
file
is
static.
For example:
$filename =~ /test/;
Where the following:
Print $filename\n;
Would produce:
123test456.txt
***
This message contains information that is confidential
and proprietary to FedEx Freight or its affiliates.
It is intended only for the recipient named and for
the express purpose(s) described therein.
Any other use is prohibited.
***
--
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
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RE: regular expression in a variable
Yes I am trying to collect the file (the result will only produce 1 match)
And I need that into a variable that can be used for the processing.
-Original Message-
From: Wagner, David --- Senior Programmer Analyst --- WGO
[mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 28, 2006 4:19 PM
To: Curt Shaffer; Timothy Johnson; beginners@perl.org
Subject: RE: regular expression in a variable
Curt Shaffer wrote:
That appears to work! The part I am stuck on is how to I take that
value (which would now be $file in your example) and put it into a
variable that I can use through the rest of the script. When I then
try to use $file outside of that routine, it is no longer the same
value.
I really appreciate your help!
So are you trying to collect all the files up front and then go
through the processing? You already have the test in the loop and could just
write a subroutine and pass it $file and do all your work there.
If you want to hold on to those fiels which match your criteria,
then use another array to capture as in
@matchedfiles = grep( /*.test.*/, @files );
Either way, you have the data in place or the other.
Wags ;)
-Original Message-
From: Timothy Johnson [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 28, 2006 3:47 PM
To: Curt Shaffer; beginners@perl.org
Subject: RE: regular expression in a variable
So what part are you stuck on then? It looks like the first
suggestion gets you the $filename you want. All you have to do after
that is move
it.
(you can change it so it isn't looking in the current directory with
the opendir line, but if you do, don't forget that you can't move the
files
by filename alone, you must add the path as a prefix)
-Original Message-
From: Curt Shaffer [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 28, 2006 12:42 PM
To: Timothy Johnson; beginners@perl.org
Subject: RE: regular expression in a variable
Thanks for the response. Let me try to clear things up. The second
solution
will not work for me because the other parts of the filename will be
unknown. The only part I know will always be in the filename is test
(only
an example).
So the full story is this:
I need to look in a directory to see if a file with test in the name
exists. If it does I need to move that file to a staging directory to
be sftp'd out to a vendor. The manner in which I am doing that is to
move
the
file named $filename (whose value is the result of the regex match) to
the
staging directory. Then sftp the $filename to the appropriate place.
Does that help a bit? If not I apologize.
Curt
-Original Message-
From: Timothy Johnson [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 28, 2006 3:30 PM
To: Curt Shaffer; beginners@perl.org
Subject: RE: regular expression in a variable
You're not being very clear what it is you're trying to do. I can see
two ways of interpreting this.
Regular expressions are mostly for checking the format of text to see
if certain conditions match. You might be asking how to do this:
use strict;
use warnings;
opendir(DIR,.) or die(Couldn't open the current directory!\n);
my @files = readdir(DIR);
foreach my $file(sort @files){
if($file =~ /(.*test.*)/i){
print MATCH: $file\n;
}
}
#
You can also use the $1 variable to capture the last text string that
matched the part of the regular expression between the parentheses.
If, on the other hand, you're trying to generate file names, then
regular expressions aren't what you're looking for.
my $prefix = 123;
my $postfix = 456;
my $filename = $prefix.test.$postfix;
print $filename.\n;
-Original Message-
From: Curt Shaffer [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 28, 2006 12:20 PM
To: beginners@perl.org
Subject: regular expression in a variable
I need to set a variable to a filename where only 1 section of the
file
is
static.
For example:
$filename =~ /test/;
Where the following:
Print $filename\n;
Would produce:
123test456.txt
***
This message contains information that is confidential
and proprietary to FedEx Freight or its affiliates.
It is intended only for the recipient named and for
the express purpose(s) described therein.
Any other use is prohibited.
***
--
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
http://learn.perl.org/ http://learn.perl.org/first-response
RE: regular expression in a variable
If you declare a variable with my(), it only exists within the current
scope (NOTE: always add 'use strict' and 'use warnings' whenever you
can at the top of your scripts).
What you'll have to do is declare a variable outside of the brackets.
You could even use a subroutine, like the one below. When it matches,
I'm returning the name of the file. If I get through the whole loop
without matching, I'm returning 0 to indicate that it failed.
#
use strict;
use warnings;
my $file;
if($file = GetTestFileName()){
print I got it! $file\n;
}else{
print Failed to locate test file!\n;
}
sub GetTestFileName{
opendir(DIR,.) or die(Couldn't open the current directory!\n);
my @files = readdir(DIR);
foreach my $testfile(sort @files){
if($testfile =~ /(.*test.*)/i){
return $testfile;
}
}
return 0;
}
##
-Original Message-
From: Curt Shaffer [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 28, 2006 1:11 PM
To: Timothy Johnson; beginners@perl.org
Subject: RE: regular expression in a variable
That appears to work! The part I am stuck on is how to I take that value
(which would now be $file in your example) and put it into a variable
that I
can use through the rest of the script. When I then try to use $file
outside
of that routine, it is no longer the same value.
I really appreciate your help!
snip
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Re: regular expression in a variable
The $file is only valid inside the foreach scope. To get a global value
use:
use strict;
use warnings;
my $file # the variable is now global
opendir(DIR,.) or die(Couldn't open the current directory!\n);
my @files = readdir(DIR);
foreach $file(sort @files){ # The my has been removed in this line
if($file =~ /(.*test.*)/i){
print MATCH: $file\n;
}
}
Cheers
Tommy
[EMAIL PROTECTED]
http://homepage.mac.com/tgrav/
Any intelligent fool can make things bigger,
more complex, and more violent. It takes a
touch of genius -- and a lot of courage --
to move in the opposite direction
-- Albert Einstein
RE: regular expression in a variable
Thank you all so much. And thank you timothy for the clarification. I do use
the use strict. I don't tend to use the warnings much, guess maybe I should
at least during development.
Thanks Again!
Curt
-Original Message-
From: Timothy Johnson [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 28, 2006 5:50 PM
To: Curt Shaffer; beginners@perl.org
Subject: RE: regular expression in a variable
If you declare a variable with my(), it only exists within the current
scope (NOTE: always add 'use strict' and 'use warnings' whenever you
can at the top of your scripts).
What you'll have to do is declare a variable outside of the brackets.
You could even use a subroutine, like the one below. When it matches,
I'm returning the name of the file. If I get through the whole loop
without matching, I'm returning 0 to indicate that it failed.
#
use strict;
use warnings;
my $file;
if($file = GetTestFileName()){
print I got it! $file\n;
}else{
print Failed to locate test file!\n;
}
sub GetTestFileName{
opendir(DIR,.) or die(Couldn't open the current directory!\n);
my @files = readdir(DIR);
foreach my $testfile(sort @files){
if($testfile =~ /(.*test.*)/i){
return $testfile;
}
}
return 0;
}
##
-Original Message-
From: Curt Shaffer [mailto:[EMAIL PROTECTED]
Sent: Tuesday, February 28, 2006 1:11 PM
To: Timothy Johnson; beginners@perl.org
Subject: RE: regular expression in a variable
That appears to work! The part I am stuck on is how to I take that value
(which would now be $file in your example) and put it into a variable
that I
can use through the rest of the script. When I then try to use $file
outside
of that routine, it is no longer the same value.
I really appreciate your help!
snip
smime.p7s
Description: S/MIME cryptographic signature
