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merge_table.pl
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#!/usr/bin/perl
use strict;
use warnings;
use Getopt::Long;
use constant {
OPT_NO => 0,
OPT_YES => 1,
};
my $help = OPT_NO;
my $key_header;
my $key_header_bool;
my $message = << '&EOT&';
# Usage: *.pl [-k] <table 1> <table 2> [table 3] ...
# -h --help Print this message.
# -k Key header column exists (key must be unique, and the header must be in the first table).
&EOT&
my $result = GetOptions(
'help|h' => \$help,
'k' => \$key_header_bool,
);
if($#ARGV<1){
print STDERR "You must set table files.\n";
$help = OPT_YES;
}
if($help == OPT_YES){
print STDERR $message."\n";
exit(0);
}
my %hash_table=();
#print Dumper \%hash_table;
my $line="";
my @ntab_list=();
for(my $i=0;$i<$#ARGV+1;$i++){
open(IN, $ARGV[$i]);
my $ntab_max=0;
while($line=<IN>){
#print $line;
#$line=~s/\n//;
# my @tempn = split(/\t/,$line);
my $tempn=$line=~tr/\t/\t/;
#print $line . ": " . $tempn . "\n";
if($tempn > $ntab_max){
$ntab_max = $tempn;
}
}
close(IN);
$ntab_list[$i]=$ntab_max;
open(IN, $ARGV[$i]);
while($line=<IN>){
#print $line;
# my @tempn = split(/\t/,$line);
my $tempn=$line=~tr/\t/\t/;
if($line=~m/^([^\t]+)\t(.*)/){
$hash_table{$1}[$i]=$2;
for(my $j=0;$j<$ntab_max-$tempn;$j++){
$hash_table{$1}[$i]="$hash_table{$1}[$i]\t";
}
}
}
close(IN);
}
if(defined($key_header_bool)){
open(IN, $ARGV[0]);
my $header=<IN>;
close(IN);
my @header_items=split(/\t/,$header);
$key_header=$header_items[0];
}
if(defined($key_header)){
print $key_header;
for(my $i=0;$i<$#ARGV+1;$i++){
if(!defined($hash_table{$key_header}[$i])){
$hash_table{$key_header}[$i]="";
# if($ntab_list[$i]-2>0){
# $hash_table{$key_header}[$i]="\t";
# }
for(my $j=1;$j<$ntab_list[$i];$j++){
$hash_table{$key_header}[$i]=$hash_table{$key_header}[$i]."\t";
}
}
#else{
# my $tempn=$hash_table{$key_header}[$i]=~tr/\t/\t/;
# for(my $j=0;$j<$ntab_list[$i]-$tempn-1;$j++){
#$hash_table{$key_header}[$i]="$hash_table{$key_header}[$i]\t";
# }
#}
print "\t$hash_table{$key_header}[$i]";
}
print "\n";
}
foreach my $key (sort keys(%hash_table)){
if(defined($key_header)){
if($key ne $key_header){
print "$key";
for(my $i=0;$i<$#ARGV+1;$i++){
if(!defined($hash_table{$key}[$i])){
$hash_table{$key}[$i]="";
# if($ntab_list[$i]-2>0){
# $hash_table{$key}[$i]="\t";
# }
for(my $j=1;$j<$ntab_list[$i];$j++){
$hash_table{$key}[$i]=$hash_table{$key}[$i]."\t";
}
}
print "\t$hash_table{$key}[$i]";
}
print "\n";
}
}
else{
print "$key";
for(my $i=0;$i<$#ARGV+1;$i++){
if(!defined($hash_table{$key}[$i])){
$hash_table{$key}[$i]="";
# if($ntab_list[$i]-2>0){
# $hash_table{$key}[$i]="\t";
# }
for(my $j=1;$j<$ntab_list[$i];$j++){
$hash_table{$key}[$i]=$hash_table{$key}[$i]."\t";
}
}
print "\t$hash_table{$key}[$i]";
}
print "\n";
}
}