Re^2: How do i search and extract commented lines from a file using perl?

Below is my progress so far. Below script is going through each file in a directory and printing all lines that has dbms output string in them. But how to eliminate dbms output string which is in between commented lines block. Ex:

 /*Line 1
      Line 2
      Line 3
      dbms out put string
      Line 4 */
[download]

I want to ignore above 5 lines

#!/usr/bin/perl
use File::Find;
use File::Basename;
use strict;
use English;   # to get program name
use Cwd;
#use warnings;


# Variables definitions
my $match_param = "DBMS_output.put_line";
my $ignore_parameter = "/*";
undef my @nocomment_array; # array for not commented line
undef my @comment_array; # array for commented line
undef my @file_list;
undef my @filenames;  # list of filenames which contains matching para
+meter
my $file_list_ref;





my $dir = cwd; #current working directory
@ARGV = $dir unless @ARGV;

find(\&process_file,@ARGV);

foreach my $file(@$file_list_ref)
{
        next if $file =~ m/$PROGRAM_NAME/i ;
    chomp($file);
    open(FH,"<$file") or die "Couldn't open $file for reading: $!\n";
    my $line = 0;

    while(<FH>)
    {
            chomp $_;
            $line = $line +1;
            if (($_=~ m/$match_param/i) && ($_ !~ m/\s*--\s*$match_par
+am/i)|| ($_=~ m/$match_param/i) && ($_ !~ m/$ignore_parameter\s*$matc
+h_param/i))
            {
                    push(@nocomment_array,"$line\t$_\n");
            }
    }

    if (@nocomment_array)
        {
            push(@filenames,"$file\n") if defined $nocomment_array[0];
            print "\n$file\n"  if defined $nocomment_array[0];
            print @nocomment_array if defined $nocomment_array[0];

        }
    undef @nocomment_array;
}

my $count = scalar(@filenames);
print "\n###################################\n";
print "List of $count files in the above output\n";
print "###################################\n";

print @filenames;  # Print only the filenames (the whole directory pat
+h)







#
# process_file() subroutine: Processes all files of a directory recurs
+ively
#
sub process_file()
{
        next unless !-d $File::Find::name;  # skips directory
        my $temp = $File::Find::name;
        chomp($temp);
        my $file_name = basename($temp);    # strips filename

        if ($file_name =~ m/.sql$/)
        {
            push(@file_list,$temp);
        }
        $file_list_ref = \@file_list;

} # end of process_file()
[download]

Comment on Re^2: How do i search and extract commented lines from a file using perl? Select or Download Code

Replies are listed 'Best First'.
Re^3: How do i search and extract commented lines from a file using perl? by stevieb (Canon) on Jun 26, 2015 at 15:45 UTC
Ok. I'm not going to focus on your entire program, but I'll show you one easy-to-understand way to skip over lines between two search terms. `#!/usr/bin/perl use warnings; use strict; my $comment = 0; while (my $line = <DATA>){ if ($line =~ m#/\#){ $comment = 1; next; } if ($line =~ m#\/#){ $comment = 0; next; } next if $comment; print $line; } __DATA__ this that /* comment line 1 comment line 2 comment line 3 */ the other adsf` [download] -stevieb	[reply] [d/l]
Re^4: How do i search and extract commented lines from a file using perl? by BillKSmith (Monsignor) on Jun 26, 2015 at 18:29 UTC
I recommend the same logic, but let the -n switch handle the input and looping. Bill	[reply]
Re^3: How do i search and extract commented lines from a file using perl? by aaron_baugher (Curate) on Jun 26, 2015 at 20:23 UTC
If I understand the problem, you want to find all files beneath a directory which contain a certain string, except ignoring the string when it falls in a comment block. Here's a solution that uses perl: `find . -type f -print0 \| while read -d $'\0' f; do if perl -0777pe 's\| +/\.?\/\|\|gs' $f \| grep certain_string >/dev/null; then echo $f; fi +; done` [download] Aaron B. Available for small or large Perl jobs and nix system administration; see my home node.	[reply] [d/l]


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