Using Config::Tiny, and assuming you don't actually need it to be in %ENV, but you just want to treat them as internal "environment-style" variables, and also want to accept true environment variables
#!/usr/bin/perl -l
# in reponse to https://perlmonks.org/?node_id=11105105
use warnings;
use strict;
use Config::Tiny;
my $ini_string = do { local $/; <DATA> };
$ini_string =~ s/(?<=.);.*$//gmx; # Config::Tiny cannot handle p
+ostfix comments
my $cfg = Config::Tiny->read_string($ini_string);
#use Data::Dumper; $Data::Dumper::Indent = 1;
#print Dumper $cfg;
# the _ key holds the main-category / top-level of your .ini file;
# if you have multiple categories, this loop will have to be modifie
+d
foreach my $key (keys %{$cfg->{_}}) {
while( $cfg->{_}{$key} =~ /\%(.*?)\%/g ) {
my $var = $1;
next unless exists $cfg->{_}{$var} or exists $ENV{$var};
#print "\$var = >>$var<<\n";
my $repl = exists $cfg->{_}{$var} ? $cfg->{_}{$var} : $ENV{$va
+r};
$cfg->{_}{$key} =~ s/\%$var\%/$repl/;
}
}
#print Dumper $cfg;
print $cfg->write_string();
__DATA__
;comments
PROJECT_HOME=D:\Scripts\Projectname\ ;comments
package1=pack_test
package1_home=%PROJECT_HOME%%package1%
subtemp=%TEMP%\subdir
On mine, that output PROJECT_HOME=D:\Scripts\Projectname\
package1=pack_test
package1_home=D:\Scripts\Projectname\pack_test
subtemp=C:\Users\pryrt\AppData\Local\Temp\subdir
update: finished my first sentence; sorry
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|