Question

我有一个看起来像这样的文件

     *TRANSACTION STARTED*
[020t CARD INSERTED
[020tCARD: *************5845
DATE 01-02-16    TIME 05:45:52
 05:46:26 GENAC 1 : ARQC
EXTERNAL AUTHENTICATE: NO ARPC
 05:46:30 GENAC 2 : AAC
 01 FEB 2016     05:47:41      10160021

     WITHDRAW
     FROM XXXXXXXX    ?
INVALID TRANSCATION ON TERMINAL.
-----------------------
[020t 05:47:05 CARD TAKEN
[020t 05:47:07 TRANSACTION END
[0r(1)2[000p[040qe1w3h162[020t*742*02/01/2016*05:47*
     *TRANSACTION STARTED*
[020t CARD INSERTED
[020tCARD: *************2584
DATE 01-02-16    TIME 05:47:27
 05:48:00 GENAC 1 : ARQC
 05:48:05 GENAC 2 : TC
[020t 05:48:16 CARD TAKEN
[020t 05:48:22 NOTES PRESENTED 0,0,2,0
 01 FEB 2016     05:48:52      10160021

     WITHDRAW
     FROM XXXXXXXX    ?
AMT   GHC40.00
[020t 05:48:31 TRANSACTION END
[0r(1)2[000p[040qe1w3h162[020t*743*02/01/2016*05:57*
     *TRANSACTION STARTED*
[020t CARD INSERTED
[020tCARD: *************3862
DATE 01-02-16    TIME 05:57:28
 01 FEB 2016     05:58:33      10160021

     INQUIRY
     FROM XXXXXXXX90018
AVAIL          GHC1260.20  
LEDGER         GHC1260.20  
[020t 05:58:06 CARD TAKEN
[020t 05:58:11 TRANSACTION END
[0r(1)2[000p[040qe1w3h162[020t*744*02/01/2016*06:43*
     *TRANSACTION STARTED*
[020t CARD INSERTED
[020tCARD: *************1972
DATE 01-02-16    TIME 06:43:53
 01 FEB 2016     06:44:56      10160021
5029110111271972
4490    4490
     INQUIRY
     FROM XXXXXXXX23013
AVAIL          GHC14.28
LEDGER         GHC14.28
[020t 06:44:25 CARD TAKEN
[020t 06:44:29 TRANSACTION END
[0r(1)2[000p[040qe1w3h162[020t*745*02/01/2016*06:56*

并且需要提取*TRANSACTION STARTED*和TRANSACTION END之间的内容，忽略所有其他信息，并为每个范围创建一个新文件。
新文件仅包含

    [020t CARD INSERTED
    [020tCARD: *************2584
    DATE 01-02-16    TIME 05:47:27
     05:48:00 GENAC 1 : ARQC
     05:48:05 GENAC 2 : TC
    [020t 05:48:16 CARD TAKEN
    [020t 05:48:22 NOTES PRESENTED 0,0,2,0
     01 FEB 2016     05:48:52      10160021

         WITHDRAW
         FROM XXXXXXXX    ?
    AMT   GHC40.00
    [020t 05:48:31

我对之前做了一些修改，但是我得到了这个错误：

Can't use string ("/home/lord-ivan/Soures_Code/Perl"...) as a SCALAR ref while "strict refs" in use at readfile.pl line 31, <$fh> line 1.

我的新代码

#! /usr/bin/perl/ 

use warnings;
use strict;

#file to open
my $somefile = "/home/lord-ivan/Soures_Code/Perl/projects/Data/EJDATA.LOG";

open (my $fh, '<:encoding(UTF-8)', $somefile) or die "Could not open file '$somefile' $!"; 
print "$somefile open";

#Extract ranges of lines from a file

while (<$fh>) {

    if (/TRANSACTION STARTED/ .. /TRANSACTION END/) 
    {
         next if /TRANSACTION\s*(STARTED|END)/;
        print $_;   
    }
}


my $ofh;

my $outputfile = "/home/lord-ivan/Soures_Code/Perl/projects/EJ Transport/Queue/.txt";

BEGIN {$outputfile= "EJ"};

open ($fh, ">>${$outputfile}.txt", print $fh $_);

close($outputfile);
$outputfile++;

为什么它不起作用。

Answer 1

@ IORD-伊凡 尝试学习

什么是数据类型。？

文件处理

什么是处理程序。

您的$somefile仅存储文件名。然后使用$somefile迭代while循环。但是您的$somefile仅包含不包含文件内容的文件名。

您的文件内容存储在$fh处理程序中，因此迭代$ fh处理程序的while循环。然后逐行检查。

use warnings;
use strict;
my $somefile = "input.txt";
open (my $fh, '<:encoding(UTF-8)', $somefile) or die "Could not open file '$somefile' $!"; 
print "$somefile open";
while (<$fh>) {

    if (/TRANSACTION STARTED/ .. /TRANSACTION END/) 
    {
         next if /TRANSACTION\s*(STARTED|END)/;
        print $_;   
    }
}

学习perl后，完成平衡程序（FILE WRITE）。：）

从具有多行记录的文件中提取数据，将每个范围保存到单独的文件中

1 个答案: