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#!/usr/bin/perl -w
use strict;
die "Usage: $0 file1.txt file2.txt [file3.txt ...]\n\n Performs a per-line concatenation of all files using the ||| seperator.\n\n" unless scalar @ARGV > 1;
my @fhs = ();
for my $file (@ARGV) {
my $fh;
if ($file =~ /\.gz$/) {
open $fh, "gunzip -c $file|" or die "Can't fork gunzip -c $file: $!";
} else {
open $fh, "<$file" or die "Can't read $file: $!";
}
binmode($fh,":utf8");
push @fhs, $fh;
}
binmode(STDOUT,":utf8");
binmode(STDERR,":utf8");
my $lc = 0;
my $done = 0;
my $fl = 0;
while(1) {
my @line;
$lc++;
if ($lc % 100000 == 0) { print STDERR " [$lc]\n"; $fl = 0; }
elsif ($lc % 2500 == 0) { print STDERR "."; $fl = 1; }
my $anum = 0;
for my $fh (@fhs) {
my $r = <$fh>;
if (!defined $r) {
die "Mismatched number of lines.\n" if scalar @line > 0;
$done = 1;
last;
}
chomp $r;
die "$ARGV[$anum]:$lc contains a ||| symbol - please remove.\n" if $r =~ /\|\|\|/;
$anum++;
push @line, $r;
}
last if $done;
print STDOUT join(' ||| ', @line) . "\n";
}
print STDERR "\n" if $fl;
for (my $i = 1; $i < scalar @fhs; $i++) {
my $fh = $fhs[$i];
my $r = <$fh>;
die "Mismatched number of lines.\n" if defined $r;
}
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