Regexp help

[mike]

Hi,

I am using the following to find matches in a file.

open( PLUGINS, $pluginsBase ) or die "can't open $pluginsBase, $!\n";
while (<PLUGINS>) {

#Since list command shows both enabled and disabled versions of the plugin. Exclude disabled version in version check.
if ( /\$id/ && !/disable/ ) {


}

}


Problem I have is that when $id is equal to org.erlide it will also match contents of the file like:

org.erlide.trace
org.erlide.debug

How can I match the exact:

org.erlide

Nothing more nothing less.

br,

//mike

 

[azrazer]

Hi,
would /^$id$/ do ?
Cheers,
azra
Le 06/07/2012 09:20, mike a écrit :

 

[mike]

I tried it but I does not match at all. Here is an example of three lines that I read:

Feature: org.eclipse.equinox.p2.user.ui 2.1.2.R37x_v20110815-1155-6-Bk8pYWZz0qUTX5I15GZWwbXkrl enabled
Feature: org.erlide.tracing 0.2.2.201204301337 enabled
Feature: org.erlide 0.16.0.201204301337

we should only match org.erlide this exactly.

br,

//mike

 

[mike]

Oh, seeing the actual data would have helped azrazer ...

# assuming that $id is set to "org.erlide", then
if ( /\s$id\s/ && !/disable/ ) {

Or even more explicitly, assuming that all your data is as you've shown
if ( /^Feature: $id\s/ && !/disable/ ) {

BTW you'd coded /\$id/; that will match the string "$id", not the value
of the variable $id;

Thanks that worked out fine. Sorry azrazer for leaving out essential information.

//mike

 

[Jürgen Exner]

No, you don't want to match, you want to test for equality.

Oh, seeing the actual data would have helped azrazer ...

# assuming that $id is set to "org.erlide", then
if ( /\s$id\s/ && !/disable/ ) {

Yeah, right. Why do people, including the OP, insist on using REs for
comparing text? And you fell into the same trap, too.

Your suggestion will match e.g.
orgXeclipse
too, and I don't think this is what the OP wants.

Yes, this again can be patched by using quotemeta, but why?
If you want to check two strings for equality then just do so instead of
fumbling around with REs:

(undef, $domain, $code, $status) = split($_, ' ');
if ($domain == $id and $status!='disable') {
....
}

jue

 

[Jim Gibson]

If you want to check two strings for equality then just do so instead of
fumbling around with REs:

(undef, $domain, $code, $status) = split($_, ' ');
if ($domain == $id and $status!='disable') {
....
}

But please do use the string comparison operator:

if ($domain eq $id ...

 

[Jürgen Exner]

But please do use the string comparison operator:

if ($domain eq $id ...

Good idea ;-)

jue

 

[Jürgen Exner]

^^ ^^
Um, you were saying something about falling into traps?

Ummm, yeah, that happens when coding in several similar but not quite
identical languages at the same time.

Thanks for catching it.

jue