Now it works for more complex structures as well as long as they are wellformed. 

use strict;
use warnings;

my $string = <<STRUCT;
 a = 0
 mm struct 
   a = 1
   b = 3
   m1 struct =
     c = 4
     d = 5
     m2 struct =
       f = 9
   e = 7
   m3 struct =
     h = 124
STRUCT

my @lines = split /\n/, $string;
my @levels;
my $ind = 0;
my $oldind;
for( my $i=0; $i<@lines; ++$i ) {
        $oldind = $ind;
        $lines[$i]  =~ /^(\s*)/;
        $ind = length( $1 );
        push @levels, $ind if $i==0;
        $lines[$i] .= ";" if $lines[$i] =~ /\S+\s*=\s*\S+/;
        next if $i==0 or $ind == $oldind;
        if( $ind > $oldind ) {
                $lines[$i-1] .= " {";
                push @levels, $ind;
        } elsif( $ind < $oldind ) {
                while( $levels[-1] > $ind ) {
                        pop @levels;
                        $lines[$i-1] .= "\n"." "x$levels[-1]."}";
                }
        }
}
while( $levels[-1] > $levels[0] ) {
        pop @levels;
        $lines[-1] .= "\n"." "x$levels[-1]."}";
}

print join "\n", @lines, "\n";

[download]

In reply to Re: Change the data to have the format which is like a C struct. by hdb
in thread Change the data to have the format which is like a C struct. by dwslovedh

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