comment on

For your simple sed commands, Perl equivalent can be produced by replacing sed -i with perl -pi -e. Having done this, we can use O 'Deparse' to get the actual Perl code produced by these switches:

$ perl -MO=Deparse -pi -e 's/GX_RAR_RAA_TRANSACTION/TRAR/g;s/GX_CCR_CC
+A_TRANSACTION/TCCA/g;s/QUOTA_GRANTED/TQG/g;s/QOS_ASSIGNED_TO_DEFAULT_
+BEARER/TQA/g;s/RULE_INSTALLED/TRI/g;s/RULE_REMOVED/TRR/g'
BEGIN { $^I = ""; }
LINE: while (defined($_ = <ARGV>)) {
    s/GX_RAR_RAA_TRANSACTION/TRAR/g;
    s/GX_CCR_CCA_TRANSACTION/TCCA/g;
    s/QUOTA_GRANTED/TQG/g;
    s/QOS_ASSIGNED_TO_DEFAULT_BEARER/TQA/g;
    s/RULE_INSTALLED/TRI/g;
    s/RULE_REMOVED/TRR/g;
}
continue {
    die "-p destination: $!\n" unless print $_;
}
-e syntax OK
[download]

ARGV is a special filehandle which iterates over files supplied in command line arguments (@ARGV array).

Thus we can inline all your `perl ...` and `sed ...` into main program (untested):

#!/usr/bin/perl
use Data::Dumper;
use File::Copy 'move';

foreach
  my $file (</data/admin/scripts/SapcmedadpebM/xdecoder/decodedir/MHSA
+PC/*csv>)
{

    # work with files changed more than 10 minutes ago
    next if time - ( stat $file )[9] < 10 * 60;
    print scalar localtime;    # instead of `date`
    {
        local @ARGV = ($file);    # edit this file
        local $^I   = "";         # enable in-place editing without ba
+ckup
      LINE: while ( defined( $_ = <ARGV> ) ) {
            s/[^[:ascii:]]//g;
            tr/\015//d;
            s/QOS_PROFILE_ID/x1/g;
            s/CHARGING_PROFILE_ID/x2/g;
            s/CONTENT_FILTERING_PROFILE_ID/x3/g;
            s/SUBSCRIBERID/x4/g;
            s/RECORD_LENGTH/x5/g;
            s/RECORD_TYPE/x6/g;
            s/EVENT_ID/x7/g;
            s/EVENT_RESULT/x8/g;
            s/CAUSE_PROTOCOL/x9/g;
            s/DEFAULT_BEARER_ID/x0/g;
            s/ARP_PRIORITY_LEVEL/y1/g;
            s/ARP_CAPABILITY/y2/g;
            s/ARP_VULNERABILITY/y3/g;
            s/BEARER_CONTROL_MODE/y4/g;
            s/TRACKING_AREA_CODE/y5/g;
            s/ROUTING_AREA_CODE/y7/g;
            s/SERVICE_AREA_CODE/y8/g;
            s/SYSTEM_IDENTIFIER/y9/g;
            s/NETWORK_IDENTIFIER/y0/g;
            s/GX_RAR_RAA_TRANSACTION/TRAR/g;
            s/GX_CCR_CCA_TRANSACTION/TCCA/g;
            s/QUOTA_GRANTED/TQG/g;
            s/QOS_ASSIGNED_TO_DEFAULT_BEARER/TQA/g;
            s/RULE_INSTALLED/TRI/g;
            s/RULE_REMOVED/TRR/g;
        }
        continue {
            die "-p destination: $!\n" unless print $_;
        }
    }
    move( $abc1,
        "/data/admin/scripts/SapcmedadpebM/xdecoder/decodedir/compleat
+/" );
}
[download]

We can also put all these substitutions in a hash to make code less repetitive:

#!/usr/bin/perl
use Data::Dumper;
use File::Copy 'move';

my %fields = (
    QOS_PROFILE_ID                 => "x1",
    CHARGING_PROFILE_ID            => "x2",
    CONTENT_FILTERING_PROFILE_ID   => "x3",
    SUBSCRIBERID                   => "x4",
    RECORD_LENGTH                  => "x5",
    RECORD_TYPE                    => "x6",
    EVENT_ID                       => "x7",
    EVENT_RESULT                   => "x8",
    CAUSE_PROTOCOL                 => "x9",
    DEFAULT_BEARER_ID              => "x0",
    ARP_PRIORITY_LEVEL             => "y1",
    ARP_CAPABILITY                 => "y2",
    ARP_VULNERABILITY              => "y3",
    BEARER_CONTROL_MODE            => "y4",
    TRACKING_AREA_CODE             => "y5",
    ROUTING_AREA_CODE              => "y7",
    SERVICE_AREA_CODE              => "y8",
    SYSTEM_IDENTIFIER              => "y9",
    NETWORK_IDENTIFIER             => "y0",
    GX_RAR_RAA_TRANSACTION         => "TRAR",
    GX_CCR_CCA_TRANSACTION         => "TCCA",
    QUOTA_GRANTED                  => "TQG",
    QOS_ASSIGNED_TO_DEFAULT_BEARER => "TQA",
    RULE_INSTALLED                 => "TRI",
    RULE_REMOVED                   => "TRR",
);

my $regexp = "(" . ( join "|", map quotemeta, keys %fields ) . ")";

foreach
  my $file (</data/admin/scripts/SapcmedadpebM/xdecoder/decodedir/MHSA
+PC/*csv>)
{

    # work with files changed more than 10 minutes ago
    next if time - ( stat $file )[9] < 10 * 60;
    print scalar localtime, "\n";    # instead of `date`
    {
        local @ARGV = ($file);       # edit this file
        local $^I   = "";            # enable in-place editing without
+ backup
      LINE: while ( defined( $_ = <ARGV> ) ) {
            s/[^[:ascii:]]//g;
            tr/\015//d;
            s/$regexp/$fields{$1}/g;
        }
        continue {
            die "-p destination: $!\n" unless print $_;
        }
    }
    move( $file,
        "/data/admin/scripts/SapcmedadpebM/xdecoder/decodedir/compleat
+/" );
}
[download]

I omitted the infinite loop and file creation. Do you need a lock file? Run perldoc -q lock to get instructions on proper locking: your current implementation may be prone to race conditions.

See also: localtime, quotemeta, $^I, local, perlfaq5.

In reply to Re: Faster replacement of sed commands.. by aitap
in thread Faster replacement of sed commands.. by Ankur_kuls

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