我有一个CSV文件列表我需要在每个上添加空列数,我需要以线性方式在每个文件上添加更改空列数,第一个文件我要插入0列,第二个文件我想插入1列,第三个文件我要插入2列,依此类推,该列应始终插入第二列。 所有输入文件都是2列csv,如下例所示
档案1
2016/03/07 23:42:40.618 GMT,54.5
2016/03/07 23:43:40.618 GMT,54.0771
2016/03/07 23:44:40.618 GMT,53.9472
2016/03/07 23:45:40.618 GMT,54.2914
文件2
2016/03/07 23:42:40.618 GMT,49.013
2016/03/07 23:43:40.618 GMT,48.688
2016/03/07 23:44:40.618 GMT,47.7052
2016/03/07 23:45:40.618 GMT,47.9057
file3的
2016/03/07 23:51:40.618 GMT,50.7858
2016/03/07 23:52:40.618 GMT,52.5267
2016/03/07 23:53:40.618 GMT,54.2865
2016/03/07 23:54:40.618 GMT,53.2014
2016/03/07 23:55:40.618 GMT,52.0538
等
我希望输出为
文件1
2016/03/07 23:42:40.618 GMT,54.5
2016/03/07 23:43:40.618 GMT,54.0771
2016/03/07 23:44:40.618 GMT,53.9472
2016/03/07 23:45:40.618 GMT,54.2914
文件2
2016/03/07 23:42:40.618 GMT,,49.013
2016/03/07 23:43:40.618 GMT,,48.6883
2016/03/07 23:44:40.618 GMT,,47.7052
2016/03/07 23:45:40.618 GMT,,47.9057
file3的
2016/03/07 23:51:40.618 GMT,,,50.7858
2016/03/07 23:52:40.618 GMT,,,52.5267
2016/03/07 23:53:40.618 GMT,,,54.2865
2016/03/07 23:54:40.618 GMT,,,53.2014
2016/03/07 23:55:40.618 GMT,,,52.0538
这是代码写的,但它为所有文件生成相同的输出,只添加了一个空列,可能我错过了一些愚蠢但我无法得到的东西
#!/usr/bin/perl
#use strict;
#use diagnostics;
use CGI qw(:standard);
use Cwd;
use File::Find;
use File::Basename;
use Text::CSV;
use Text::Trim qw(trim);
use List::MoreUtils qw(uniq);
use Text::CSV_XS;
sub read_dir{
my $ph=$_[0];
my $match=$_[1];
my @fl = ( );
#print "<b> will open $ph";
opendir DH, "$ph" or die "Cannot open Dir $ph: $!";
#if ($match eq "") {
@fl = grep !/^\.\.?$\.*/, sort(readdir DH) ;
#}
#else {
# my @fl = grep {$_ =~ $match} sort(readdir DH) ;
#}
closedir DH;
if ($match ne "") {
foreach my $file (@fl){
if ($file =~$match) {
push(@ffl,$file);
}
}
return @ffl;
}
else {
return @fl;
}
}
@column=();
$loc="/myfolder";
$offset=1;
@sites=("dir1","dir2","dir3");
$s="subdir";
foreach $t (@sites) {
$m=0; #number of empty column to insert in the file
@list=read_dir("$loc/Statistics/$t/$s"); #directory that contain the csv file to manipulate
foreach $l (@list) {
#inser the empty column
open $in, "<","$loc/Statistics/$t/$s/$l" or die $!;
open $out, ">>", "$loc/Statistics/$t/$s/$l.tmp" or die $!;
foreach $r (0..$m) {
print "<br> r is $r";
open $out, ">>", "$loc/Statistics/$t/$s/$l.tmp" or die $!;
while ($row = $ccsv->getline($in)) {
splice @$row, $offset, 0, shift @column;
$ccsv->print($out, $row);
}
close $out;
}
close $in;
$m=$m+1;
}
}
答案 0 :(得分:3)
perl -i~ -pe '
s/,/"," x (1 + $commas)/e;
$commas++ if eof;
' -- file1 file2 file3
-p
逐行读取文件,运行代码后打印出来-i~
更改输入文件&#34;就位&#34;,将备份保存为file1~
等。s/,/"," x $commas/e
用替换部分中的评估代码替换逗号,即逗号对第一个文件重复一次,对第二个文件重复两次,依此类推eof
都会返回true,请参阅eof $commas++
为$ commas添加1