Perl - 帮助调试

Question

有人能够快速浏览我的代码并尝试找出我没有看到的内容吗？我现在的 Perl 调试器遇到了问题，所以这不是一个选择，直到我修复它（在调查过程中）。代码如下：

## Special Variables:
my @args = ();
my $spcl_dir = "$dir_root\\specialprocessing";
my $spcl_log = 'C:\Dad\Eclipse\Repositories\tiffinfo\!specialprocessing.log';

open(FILE, $spcl_log) || die "Couldn't open $spcl_log: $!\n";
for (my $i = 0 ; $i < 5 ; $i++) {
   my $dummy = <FILE>;
}

print "\n$spcl_log\n"; # delete me

while (<FILE>) {
    print "DEBUG START\n";
    my (@fields) = split /;/;
    my $filename = $fields[0];
    print "Processing $filename";
    print "DEBUG END\n";
}

## Copy process
print "\nStarting the copy process over to $spcl_dir:\n";
while (<FILE>) {
    print "DEBUG START!\n";
    my (@fields) = split /;/;
    my $filename = $fields[0];
    print "Copying $filename";
    if (copy("$dir_root\\$filename", "$spcl_dir\\$filename")) {
        print " - Success!\n";
    }
    else { print " - Failure!\n"; }
}
close(FILE);

## Confirmation of file copy
print "Everything look OK?: ";
chomp(my $confirmcopy = <STDIN>);
if ($confirmcopy =~ /^y|^yes/i ) {
    print "\nAttempting to remove original files.\n";
    ## Original file deletion process
    open(FILE, $spcl_log) || die "Couldn't open $spcl_log: $!\n";
    for (my $i = 0 ; $i < 5 ; $i++) {
       my $dummy = <FILE>;
    }

    while (<FILE>) {
        my (@fields) = split /;/;
        my $filename = $fields[0];
        print "Attempting to remove: $filename";
        if (unlink("$dir_root\\$filename")) {
            print " - Success!\n";
        }
        else { print " - Failure!\n"; }
    }
    close(FILE);
}
else { print "Will do, exiting."; exit; }

## Conversion process
print "\nAttempting to convert the files.\n";
open(FILE, $spcl_log) || die "Couldn't open $spcl_log: $!\n";
for (my $i = 0 ; $i < 5 ; $i++) {
   my $dummy = <FILE>;
}

while (<FILE>) {
    my (@fields) = split /;/;
    my $filename = $fields[0];
    print "Starting conversion on $spcl_log\n";
    @args = ("$tiffinfo_path", "$spcl_dir\\$filename", "/bpp=2", "/tifc=4", "/convert=$dir_root\\$filename", "/killmesoftly", "/silent");
    system(@args);
    unlink("$spcl_dir\\$filename");
}
close(FILE);

所需的输出如下：

Irfanview Found.
Directory exists. Continuing...

Starting the copy process over to c:\dad\tiffs\specialprocessing:
Copying filename2.tif - Failure!
Everything look OK?: n
Will do, exiting.
c:\Dad\Eclipse\Repositories\tiffinfo>perl c:\Users\Administrator\Desktop\exectif
finfo.pl
Irfanview Found.
Directory exists. Continuing...

Starting the copy process over to c:\dad\tiffs\specialprocessing:
Copying filename2.tif - Failure!
Everything look OK?: y

Attempting to remove original files.
Attempting to remove: filename2.tif - Failure!

Attempting to convert the files.
Starting conversion on filename2.tif

这显然会有所不同，但您明白了。我遇到的问题是，每次我似乎点击 while 循环时，都没有处理任何内容，所有代码都不起作用。我什至尝试过简单的调试，例如 print 语句来查看代码实际执行了多远，而 while 语句中没有执行任何内容。

输出我接收（我必须按 CTRL-C 退出程序，因为它不会自行退出）：

C:\Dad\Eclipse\Repositories\tiffinfo\!specialprocessing.log
Starting the copy process over to c:\dad\tiffs\specialprocessing:
Everything look OK?: y
Terminating on signal SIGINT(2)

while 循环之前的 print 语句打印“spcl_log”变量，即：

C:\Dad\Eclipse\Repositories\tiffinfo\!specialprocessing.log

>日志文件的内容（总是会跳过前五行 - 这就是虚拟循环的作用）：

IRFANVIEW BATCH ROUTINE
Work as: Batch Conversion
Output format: TIF
--OPTIONS: CCITT Fax 4  Save gryscl [default ON]
Adv Options: CHANGE COLOR DEPTH 2 colors (B/W) 1 BPP)
filename2.tif;Smpl/Pix & Bits/Smpl are missing.

整个脚本的内容：

#!/usr/bin/perl -w

use strict;
use warnings;
use File::Spec;
use Carp;
use File::Copy;

## Vars
my $dir_root;
my $state;
my $status;
my $batch;
my @files;
my $tifs;
my $executebat;
my $infile;
my $alphachnl;
my $errorlog;
my $corrupt;
my $specialLog;
#my $tiffinfo_path = "c:\\Program Files\\IrfanView\\i_view32.exe";
my $tiffinfo_path = "./converter.pl";

## Usage Vars
my $curVersion = "1.6";
my $options = $ARGV[0];

## Future Use Vars
my $totalErrors = 0;
my $fileCount = 0;

if ($#ARGV >= 0) {
    usage() if $#ARGV > 0;
    usage() if $options eq "-h";
    version() if $options eq "-v";
}

sub version {
    print "CompileTiffInfo.exe\n";
    print "Version: $curVersion\n";
    exit( 0 );
}
sub usage {
    print "\nUsage: compileTiffInfo.exe [OPTIONS]\n";
    print "Processes a directory of TIF images, and outputs the data to 3 different text files.\n\n";
    print "compileTiffInfo.exe (default)\n\tRuns the program through an interactive menu.\n\n";
    print "compileTiffInfo.exe -v\n\tShows version information for this program\n\n";
    print "compileTiffInfo.exe -h\n\tShows this help menu\n";
    exit( 0 );
}

system 'cls';
## Check if tiffinfo is installed.
if (-e $tiffinfo_path) {
    print "Irfanview Found." . "\n";
}
else {
    print "Irfanview was not found." . "\n";
    exit ( 0 );
}

## Check passcode
if (defined($ARGV[0])) {
    if ($ARGV[0] ne $curVersion ) {
        print "Passcode not recognized.";
        exit ( 0 );
    }
}
else { 
    print "Passcode not recognized.";
    exit ( 0 ); 
}

## Start of actual program; asks user where the TIF images are located.
print "Where are your TIF file(s) located? (C:\\directory\\of\\your\\tiff\\files): ";
chomp($dir_root = <STDIN>);
if (! -d $dir_root) {
    print "Directory doesn't exist!\n";
    exit;
}
if ($dir_root =~ tr/ / /) {
    print "There's spaces in your path. Try again.\n";
    exit;
}
if ($dir_root =~ /\\$/) {
    print "You ended with a slash. This is not allowed; try again.";
    exit;
}
print "State: [LA,NM,OK,UT,TX,WY] - [--,none,other]: ";
chomp($state = uc(<STDIN>));
if ($state eq "") {
    print "Whoa! No data was entered.  Exiting.";
    exit;
}
if ($state eq "OTHER" || $state eq "NONE" || $state eq "--") {
    print "\n ** NOTE: Entering into STANDARD SPREADSHEET OUTPUT MODE **\n\n"
}
print "Status [nr][hs][tye] or Anything Descriptive: ";
chomp($status = lc(<STDIN>));
print "Batch #? ";
chomp($batch = uc(<STDIN>));

## Define the output file, based on user input
my $batOutput = "\!".$state.$status."INFOraw.txt";

open (BATFILE, "> \!".$state.$status."INFOraw.bat");
print BATFILE "\@echo off\n";
close (BATFILE);

open (BATFILE, ">> \!".$state.$status."INFOraw.bat");
print BATFILE "type nul > $batOutput\n";
close (BATFILE);

## Get a list of tif files from dir_root
## No trailing slash is allowed
opendir(DIR, $dir_root);
@files = grep(/\.ti[f]{1,2}$/i,readdir(DIR));
closedir(DIR);

## Check to see if array has data
if (@files) {
    foreach $tifs (@files) {
        open (BATFILE, ">> \!".$state.$status."INFOraw.bat");
        print BATFILE "tiffinfo TYPE $dir_root"."\\".$tifs." \>> ".$batOutput."\n";
        ## Need to write to INFO file, for each file, eliminating the .bat file.
        close (BATFILE);
    }
}
## if array is null (no data), then no tif files were found
else {
    print "No Tiff files were found.";
    exit;
}

## Run bat script
print "Attempting to execute .bat script now...\n";
$executebat = system 'call !'.$state.$status.'INFOraw.bat > NUL 2>&1';
if ( $executebat != 0 ) { 
        die "Failed executing .bat script. \n"; 
}
else { print "Ran .bat script successfully.\n\n"; }

## Debugging Only
#$infile = 'data.txt';
$infile = $batOutput;

## Output File Handles (open)
open(OUT1,"> \!".$state.$status."INFO.txt") or die "Can't open \!".$state.$status."INFO.txt: $!"; 
open(OUT2,"> \!".$state.$status."INFOspdsht.txt") or die "Can't open \!".$state.$status."INFO.txt $!";
open(ERRLOG,"> \!errors.log") or die "Can't open !errors.log $!";
open(CORRUPT,"> \!corrupt.log") or die "Can't open !corrupt.log $!";
open(SPECIAL,"> \!specialprocessing.log") or die "Can't open !specialprocessing.log $!";

## Print Headers To spdsht file
print OUT2 ";;;;Whitespace;;DPI ReSize;;;\n";
print OUT2 "Filename;Comp;AlphCnl;Foto;Wid;Len;Res 0;x0;;;MB\n";
print CORRUPT "Filename;Reason For Failure\n";
print SPECIAL "IRFANVIEW BATCH ROUTINE\nWork as: Batch Conversion\nOutput format: TIF\n--OPTIONS: CCITT Fax 4  Save gryscl [default ON]\nAdv Options: CHANGE COLOR DEPTH 2 colors (B/W) 1 BPP)\n";

## Configuration Data for masking data output
my %config = (
    'LZW'                               => 'colors',
    'Lempel-Ziv & Welch encoding'       => 'colors',
    'CCITT Group 4'                     => 'bkwhts',
    'CCITT Group 4 facsimile encoding'  => 'bkwhts',
    'None'                              => 'none',
    'none'                              => 'none',
    'RGB color'                         => 'colors',
    'min-is-white'                      => 'bkwhts',
    'min-is-black'                      => 'bkwhts',
    'palette color (RGB from colormap)' => 'colors',
    'Resolution'                        => sub {
                                            my @r = split(/, /, shift);
                                            $r[0] =~ s/\D//g;
                                            $r[1] =~ s/\D//g;
                                            return @r[0,1];
    },
);

my @config = keys %config;

#my $file = $infile; # set this as needed.
my $file = "data.txt";

open my $fh, '<', $file or die "can't open <$file> for reading $!";

$/ = "TYPE:\n";
while ( my $record = <$fh> ) {
    chomp $record;
    next if $record eq '';
    $record =~ s/(TIFF Directory at offset .+)\n//;

    ## Future use, for incrementing errors
    my $errorCount = 0;

    my ($fullpath, $data) = split(/\n/, $record, 2);
    $fullpath =~ s/:$//;

    my ($drv, $path, $file) = File::Spec->splitpath($fullpath);

    ## Start processing the file
    print "Processing $file\n";
    $fileCount++;

    ## Get Compression Scheme data
    my $cs = $config{$1} if ($data =~ s/\s{2}Compression Scheme:\s+(.*?)\n//);
    if (!defined $cs) {
        print "[ERROR]: Compression Scheme for $file not found.\n";
        #print ERRLOG "[ERROR]: Compression Scheme for $file not found.\n";
        $cs = "unknwn";
        $errorCount++;
    }   

    ## Get Photometric Interpretation data
    my $pi = $config{$1} if ($data =~ s/\s{2}Photometric Interpretation:\s+(.*?)\n//);
    if (!defined $pi) {
        print "[ERROR]: Photometric Interpretation for $file not found.\n";
        print ERRLOG "[ERROR]: Photometric Interpretation for $file not found.\n";
        $pi = "unknwn";
        $errorCount++;
    }

    ## Get Bits/Sample data
    my $bits = $1 if ($data =~ s/\s{2}Bits\/Sample:\s+(.*?)\n//);
    if (!defined $bits) {
        print "[ERROR]: Bits/Sample data for $file not found.\n";
        print ERRLOG "[ERROR]: Bits/Sample data for $file not found.\n";
        $bits = "unknwn";
        $errorCount++;
    }

    ## Get Samples/Pixel data
    my $pixels = $1 if ($data =~ s/\s{2}Samples\/Pixel:\s+(.*?)\n//);
    if (!defined $pixels) {
        print "[ERROR]: Samples/Pixel data for $file not found.\n";
        print ERRLOG "[ERROR]: Samples/Pixel data for $file not found.\n";
        $pixels = "unknwn";
        $errorCount++;
    }

    ## Get AlphaChnl Value (bits * pixels)
    if (!($pixels eq '') && !($bits eq '')) {
        if (!($pixels eq "unknwn") && !($bits eq "unknwn")) {
            $alphachnl = $bits * $pixels;
            if ($alphachnl == 1) {
                $alphachnl = "bkwhts";
            }   
            elsif ($alphachnl == 8) {
                $alphachnl = "colors";
            }
            elsif ($alphachnl == 24) {
                $alphachnl = "doLOGO";
            }
        }
    }
    else {
        $alphachnl = "unknwn";
        print "[ERROR]: Alpha Channel for $file had issues (probably due to Bits/Sample or Sample/Pixel issue.)\n";
        $errorCount++;
        print "[ERROR]: Alpha Channel for $file had issues (probably due to Bits/Sample or Sample/Pixel issue.)\n";
    }

    ## Get Resolution data
    my @r = $config{'Resolution'}->($1) if ($data =~ s/\s{2}Resolution:\s+(.*?)\n//);

    ## Get Width/Length data
    my ($w, $l) = ($1, $2) if ($data =~ s/\s{2}Image Width: (\d+) Image Length: (\d+)\n//);

    ## Width
    if (!defined $w) {
        print "[ERROR]: Width for $file not found.\n";
        print ERRLOG "[ERROR]: Width for $file not found.\n";
        $errorCount++;
        #next;
    }

    ## Length
    if (!defined $l) {
        print "[ERROR]: Length for $file not found.\n";
        print ERRLOG "[ERROR]: Length for $file not found.\n";
        $errorCount++;
        #next;
    }

    ## Width
    if (!defined $w) {
        print "[ERROR]: Width for $file not found.\n";
        print ERRLOG "[ERROR]: Width for $file not found.\n";
        $errorCount++;
    }

    ## Length
    if (!defined $l) {
        print "[ERROR]: Length for $file not found.\n";
        print ERRLOG "[ERROR]: Length for $file not found.\n";
        $errorCount++;
        $l = "unknwn";
    }

    ## Resolution
    if (!defined $r[0] || !defined $r[1]) {
        print "[ERROR]: Resolution for $file not found.\n";
        print ERRLOG "[ERROR]: Resolution for $file not found.\n";
        $errorCount++;
        #next;
    }   

    ## Resolution
    if (!defined $r[0] || !defined $r[1]) {
        print "[ERROR]: Resolution for $file not found.\n";
        print ERRLOG "[ERROR]: Resolution for $file not found.\n";
        $errorCount++;
        $r[0] = "unknwn";
        $r[1] = "unknwn";
    }   
    ## Get Rows/Strip data
    my $strip = $1 if ($data =~ s/\s{2}Rows\/Strip:\s+(.*?)\n//);
    if (!defined $strip) {
        print "[ERROR]: Rows/Strip data for $file not found.\n";
        print ERRLOG "[ERROR]: Rows/Strip data for $file not found.\n";
        $errorCount++;
    }

    ## Get Size of TIF(F) file(s)
    #my $filesize = (-s $fullpath) / (1024 * 1024); ## Uncomment when in production
    my $filesize = "2"; ## REMOVE - Testing Purposes only to "fake" an image size.
    my $size_in_mb = sprintf "%.2f", $filesize;


    ## Error Check
    if ($errorCount == 8) {
        print "[FAILURE]: Not processed, image may be CORRUPT.\n";
        print CORRUPT "$file;High Probability - IMAGE CORRUPT.";
        $totalErrors++;
        next;
    }
    if ($pixels eq "unknwn" && $bits eq "unknwn") {
        print "[INFO]: Specially processed image.\n";
        print SPECIAL "$file;Smpl/Pix & Bits/Smpl are missing.\n";
        $totalErrors++;
        next;
    }
    if ($errorCount > 0) {
        print "[ERROR]: $file was not processed, too many errors.\n";
        $totalErrors++;
        next;
    }

    $data =~ s/\n$//;

    ## ** For Debugging - Prints To Screen **
    ## print $/, join(':', $file, $cs, $bits, $pi, $w, $l, @r, $size_in_mb, "\n"), $data, "\n";

    print OUT1 $/, join(';', $file, $cs, $bits, $pixels, $pi, $w, $l, @r, $size_in_mb, "\n"), $data, "\n";

    ## LA Output
    if ($state eq "LA") {
        print OUT2 "$file;", "$cs;", "$alphachnl;", "$pi;", "$w;", "$l;", "$r[0];$r[1];;;", "$size_in_mb;;","\'$batch;;;;","start;","$file;;;;;;;;;;","$size_in_mb;","move;","$file;","$dir_root\\done;", "\n"; 
    }
    ## NM Output
    elsif ($state eq "NM") {
        print OUT2 "$file;", "$cs;", "$alphachnl;", "$pi;", "$w;", "$l;", "$r[0];$r[1];;;", "$size_in_mb;;","\'$batch;;;;","start;","$file;","$size_in_mb;","move;","$file;","$dir_root\\done;", "\n";
        next;
        next;
    }
    ## OK/UT Output
    elsif ($state eq "OK" || $state eq "UT") {
        print OUT2 "$file;", "$cs;", "$alphachnl;", "$pi;", "$w;", "$l;", "$r[0];$r[1];;;", "$size_in_mb;;","\'$batch;;;;","start;","$file;","$size_in_mb;","move;","$file;","$dir_root\\done;","start;",$file."f;","move;",$file."f;","$dir_root\\done\\TEMPdone;", "\n";
        next;
        next;
    }
    ## TX/WY Output
    elsif ($state eq "TX" || $state eq "WY") {
        print OUT2 "$file;", "$cs;", "$alphachnl;", "$pi;", "$w;", "$l;", "$r[0];$r[1];", "move $dir_root\\$file $dir_root\\$cs\\$file;;", "$size_in_mb;;", "\'$batch;;;","start;", "$dir_root\\$cs\\$file;", "$file;","$size_in_mb;","move;", "$dir_root\\$cs\\$file;", "$dir_root\\done;","start;", $file."f;", "move;", $file."f;", "$dir_root\\done\\TEMPdone;", "\n";
        next;
        next;
    }
    elsif ($state eq "NONE" || $state eq "--" || $state eq "OTHER") {
        print OUT2 "$file;", "$cs;", "$alphachnl;", "$pi;", "$w;", "$l;", "$r[0];$r[1];", "$size_in_mb\n";
        next;
        next;
    }
}

print "\nTotal Files Processed: $fileCount\n";
print "High Probability Failures: $totalErrors  /  Failure Rate: ".$totalErrors * 100 / $fileCount."%\n";

close (OUT1) or die "Can't close out1: $!"; 
close (OUT2) or die "Can't close out2: $!"; 
close (ERRLOG) or die "Can't close error log: $!";
close (CORRUPT) or die "Can't close corrupt log: $!";
close (SPECIAL) or die "Can't close corrupt log: $!";
close ($fh) or die "Can't close $fh: $!";

$errorlog = "\!errors.log";
if (-s $errorlog == 0) {
    unlink($errorlog) or die "Can't delete $errorlog : $!"; 
}
else { print "Error log saved.\n\n"; }

#$corrupt = "\!corrupt.log";
#if (-s $corrupt == 0) {
#   unlink($corrupt) or die "Can't delete $corrupt : $!";
#}
#else { print "Corrupt log saved."; }

#$specialLog = "\!specialprocessing.log";
#if (-s $specialLog == 0) {
#   unlink($specialLog) or die "Can't delete $specialLog : $!";
#}
#else { print "Special Processing log saved."; }

## Starting Tiffinfo Processing:

my $spcl_dir = "dst";
my $spcl_log = "!specialprocessing.log";

print "DIR_ROOT: $dir_root\n";
print "SPCL_LOG: $spcl_log\n";
print "TIFFINFO_PATH: $tiffinfo_path\n";

sub get_files_list
{
    my($log) = @_;
    open my $file, '<', $log or croak "Couldn't open $log: $!\n";
    # Skip heading lines
    for (my $i = 0 ; $i < 5 ; $i++)
    {
        my $dummy = <$file>;
    }
    my @files;
    while (<$file>)
    {
        my (@fields) = split /;/;
        my $filename = $fields[0];
        push @files, $filename;
    }
    close $file or croak "Couldn't close $log: $!\n";
    return @files;
}

my @spcl_files = get_files_list($spcl_log);
print "\n$spcl_log\n"; # delete me

## Copy original files
print "\nStarting the copy process over to $spcl_dir:\n";
foreach my $filename (@spcl_files)
{
    print "Copying $filename";
    if (copy("$dir_root/$filename", "$spcl_dir/$filename"))
    {
            print " - Success!\n";
    }
    else
    {
        print " - Failure! ($!)\n";
    }
}

## Confirmation of file copy
print "Everything look OK?: ";
chomp(my $confirmcopy = <STDIN>);
if ($confirmcopy !~ /^y|^yes/i )
{
    print "Will do, exiting.\n";
    exit 0;
}

## Delete original files
print "\nAttempting to remove original files.\n";
foreach my $filename (@spcl_files)
{
    print "Attempting to remove: $filename";
    if (unlink("$dir_root/$filename"))
    {
        print " - Success!\n";
    }
    else
    {
        print " - Failure! ($!)\n";
    }
}

## Conversion process
print "\nAttempting to convert the files.\n";

foreach my $filename (@spcl_files)
{
    print "Starting conversion on $filename\n";
    my @args = ("$tiffinfo_path", "$spcl_dir/$filename", "/bpp=2",
                "/tifc=4", "/convert=$dir_root/$filename",
                "/killmesoftly", "/silent");
    if (system(@args) != 0)
    {
        carp "Failed to convert $filename ($!)";
    }
    else
    {
        unlink("$spcl_dir/$filename") or carp "Failed to unlink $spcl_dir/$filename ($!)";
    }
}

注释： 我唯一改变的是我添加了：

print "DIR_ROOT: $dir_root\n";
print "SPCL_LOG: $spcl_log\n";
print "TIFFINFO_PATH: $tiffinfo_path\n";

...用于调试目的。另一件事是，我将数组 @files 重命名为 @spcl_files，因为 @files 已在我的主脚本中定义。

问题仍然存在： 这是我当前的输出：

Irfanview Found.
Where are your TIF file(s) located? (C:\directory\of\your\tiff\files): c:\dad\ti
ffs
State: [LA,NM,OK,UT,TX,WY] - [--,none,other]: tx
Status [nr][hs][tye] or Anything Descriptive: nr
Batch #? 1
Attempting to execute .bat script now...
Ran .bat script successfully.

Processing filename.tif
Processing filename2.tif
[ERROR]: Bits/Sample data for filename2.tif not found.
[ERROR]: Samples/Pixel data for filename2.tif not found.
[INFO]: Specially processed image.

Total Files Processed: 2
High Probability Failures: 1  /  Failure Rate: 50%
Error log saved.

DIR_ROOT: c:\dad\tiffs
SPCL_LOG: !specialprocessing.log
TIFFINFO_PATH: ./converter.pl

!specialprocessing.log

Starting the copy process over to dst:
Everything look OK?: n

对于陈述者来说，它仍然不显示“开始复制过程到 dst”之后的文件名，以及我是否为“一切看起来都正常？”点击 Y 或 N。部分，它只是挂在那里，什么也不做。

新代码/输出 11/26 @ 3PM CST：

my @spcl_files = get_files_list($spcl_log);
print $spcl_files[0];
print "YO";

输出：

Use of uninitialized value in print at compileTiffInfo.pl line 445.
YO
Starting the copy process over to dst:
Everything look OK?: Terminating on signal SIGINT(2)

提前致谢！ :)

Answer 1

您设置输入分隔符（第 190 行）：

$/ = "TYPE:\n";

Answer 2

您的 DEBUG START、DEBUG END while 循环正在吃掉文件中的所有数据 - 然后您希望主循环从同一文件中读取新数据。

要么：

• 失去调试循环。

或者：

• 修改调试循环以生成数组中的文件列表，然后让主循环从数组而不是输入文件中读取文件名。

您想要的输出也不能从显示的代码中全部获得 - 特别是第一行，似乎没有任何代码可以打印它。

---

代码的解构

您的代码将相同的代码写了 3 次 - 跳过 5 行并拆分文件名的内容。在 SO 4272615 的答案中，为您提供了一组函数，该函数将为您提供一个包含要处理的文件名列表的数组。使用函数 - 它们使代码更易于管理！

我发现您的代码不包含 'use strict;' 或 'use warnings';专家需要一直使用它们，以确保自己不会犯错误，而初学者则需要一直使用它们，以确保自己不会犯错误。事实上，它抛出的唯一问题是“未声明的变量”，所以你的代码还不错。

当我运行代码时（经过修改，目录适合我的机器），第一个 DEBUG 循环运行并耗尽数据；因此，第二个循环没有报告任何内容。如果我尝试让它运行，它就会抱怨找不到函数 main::copy 。据推测，这个问题可以通过添加“use File::Copy;”来解决，但如果您发布您正在使用的实际代码，而不是一个被屠宰的外表，它会有所帮助。

即使在 Windows 上，您也最好不要在路径名中使用“\\”；你可以在其中使用“/”，操作系统会很高兴； cmd.exe 不热衷于斜杠而不是反斜杠。

模拟环境

WFM 下面的代码 - 对我有用（测试环境：MacOS X 10.6.5，Perl 5.13.4）。我根据上一个问题创建了一个文件“data.file”。我创建了子目录“safe”、“src”和“dst”，并在“safe”中创建了空文件“filename2.tif”、“filename4.tif”、“filename6.tif”、“filename8.tif”。然后，我将文件从“safe”链接到“src”，这样我就可以轻松地重新运行脚本，尽管它取消了输入文件的链接。

ln safe/* src

我还创建了一个脚本“转换器”：

echo "$0 $@"

示例输出

程序的输出如下：

data.file

Starting the copy process over to dst:
Copying filename2.tif - Success!
Copying filename4.tif - Success!
Copying filename6.tif - Success!
Copying filename8.tif - Success!
Everything look OK?: y

Attempting to remove original files.
Attempting to remove: filename2.tif - Success!
Attempting to remove: filename4.tif - Success!
Attempting to remove: filename6.tif - Success!
Attempting to remove: filename8.tif - Success!

Attempting to convert the files.
Starting conversion on filename2.tif
./converter dst/filename2.tif /bpp=2 /tifc=4 /convert=src/filename2.tif /killmesoftly /silent
Starting conversion on filename4.tif
./converter dst/filename4.tif /bpp=2 /tifc=4 /convert=src/filename4.tif /killmesoftly /silent
Starting conversion on filename6.tif
./converter dst/filename6.tif /bpp=2 /tifc=4 /convert=src/filename6.tif /killmesoftly /silent
Starting conversion on filename8.tif
./converter dst/filename8.tif /bpp=2 /tifc=4 /convert=src/filename8.tif /killmesoftly /silent

代码重构

#!/usr/bin/env perl
use strict;
use warnings;
use Carp;
use File::Copy;

my $spcl_dir = "dst";
my $spcl_log = "data.file";
my $dir_root = "src";
my $tiffinfo_path = "./converter";

sub get_files_list
{
    my($log) = @_;
    open my $file, '<', $log or croak "Couldn't open $log: $!\n";
    # Skip heading lines
    for (my $i = 0 ; $i < 5 ; $i++)
    {
        my $dummy = <$file>;
    }
    my @files;
    while (<$file>)
    {
        my (@fields) = split /;/;
        my $filename = $fields[0];
        push @files, $filename;
    }
    close $file or croak "Couldn't close $log: $!\n";
    return @files;
}

my @files = get_files_list($spcl_log);
print "\n$spcl_log\n"; # delete me

## Copy original files
print "\nStarting the copy process over to $spcl_dir:\n";
foreach my $filename (@files)
{
    print "Copying $filename";
    if (copy("$dir_root/$filename", "$spcl_dir/$filename"))
    {
            print " - Success!\n";
    }
    else
    {
        print " - Failure! ($!)\n";
    }
}

## Confirmation of file copy
print "Everything look OK?: ";
chomp(my $confirmcopy = <STDIN>);
if ($confirmcopy !~ /^y|^yes/i )
{
    print "Will do, exiting.\n";
    exit 0;
}

## Delete original files
print "\nAttempting to remove original files.\n";
foreach my $filename (@files)
{
    print "Attempting to remove: $filename";
    if (unlink("$dir_root/$filename"))
    {
        print " - Success!\n";
    }
    else
    {
        print " - Failure! ($!)\n";
    }
}

## Conversion process
print "\nAttempting to convert the files.\n";

foreach my $filename (@files)
{
    print "Starting conversion on $filename\n";
    my @args = ("$tiffinfo_path", "$spcl_dir/$filename", "/bpp=2",
                "/tifc=4", "/convert=$dir_root/$filename",
                "/killmesoftly", "/silent");
    if (system(@args) != 0)
    {
        carp "Failed to convert $filename ($!)";
    }
    else
    {
        unlink("$spcl_dir/$filename") or carp "Failed to unlink $spcl_dir/$filename ($!)";
    }
}

注意

• 在删除文件之前检查转换是否成功 (system)。
• 检查取消链接是否成功。
• 在错误消息中包含 Perl 错误信息“$!”。
• 使用“use Carp;”、carp 和 croak 而不是 warn 和 die 。
• 函数 get_file_list() 用于获取文件列表 - 仅一次。
• 该函数使用词法文件句柄 $file 而不是 FILE。
• 它还使用 open 的三参数形式，这是最可靠的形式。
• 它还使用低优先级“或”连接词而不是“||”。 （在上下文中，open 周围有括号，“||”是正确的；如果您像重写中那样省略括号，则“or”是必需的。）
• 代码会提前退出当响应是“不要继续”时。
• foreach 循环迭代文件列表。
• exit 的显式状态为 0（成功）。

Answer 3

好吧，你显然没有从 中得到任何信息。
也许您在某处更改了输入记录分隔符（$/）？

要进行调查，请将 for 循环扩展为：

for (my $i = 0 ; $i < 5 ; $i++) {
    my $dummy = <FILE>;
    print $dummy;
}

这应该可以让您很好地了解这里发生的情况。

另外，请考虑读取数组中的文件 (my @lines =;)，因为您多次使用该信息。