为什么我的 Perl 脚本和 Windows SendTo 不能使用超过 20 个文件?

发布于 2024-08-08 15:33:20 字数 2600 浏览 1 评论 0原文

我正在尝试模拟 RapidCRC 在 Windows Vista Ultimate 64 位上检查文件名中的 crc32 值的能力。然而,我似乎遇到了某种论证限制。

我编写了一个快速 Perl 脚本,创建了一个批处理文件来调用它,然后在 %APPDATA%\Microsoft\Windows\SendTo 中放置了批处理文件的快捷方式,

当我选择大约 20 个文件或less,右键单击并“发送到”我的批处理文件脚本。然而,当我选择更多时,什么也不会发生。我怀疑某处存在字符或参数数量限制。

希望我错过了一些简单的事情,并且解决方案或解决方法不会太痛苦。

参考资料:

批处理文件(crc32_inline.bat):

crc32_inline.pl %*

Perl注释:

我正在使用(草莓)perl v5.10.0

我的路径中有 C:\strawberry\perl\bin,这是 crc32.bat 所在的位置。

Perl 脚本(crc32_inline.pl):

#!/usr/bin/env perl

use strict;
use warnings;

use Cwd;
use English qw( -no_match_vars );
use File::Basename;

$OUTPUT_AUTOFLUSH = 1;

my $crc32_cmd = 'crc32.bat';
my $failure_report_basename = 'crc32_failures.txt';
my %failures = ();

print "\n";
foreach my $arg (@ARGV) {

  # if the file has a crc, check to see if it matches the calculated
  # crc.
  if (-f $arg and $arg =~ /\[([0-9a-f]{8})\]/i) {
    my $crc = uc $1;
    my $basename = basename($arg);
    print "checking ${basename}... ";
    my $calculated_crc = uc `${crc32_cmd} "${arg}"`;
    chomp($calculated_crc);
    if ($crc eq $calculated_crc) {
      print "passed.\n";
    }
    else {
      print "FAILED (calculated ${calculated_crc})\n";
      my $dirname = dirname($arg);
      $failures{$dirname}{$basename} = $calculated_crc;
    }
  }
}

print "\nReport Summary:\n";
if (scalar keys %failures == 0) {
  print "  All files OK\n";
}
else {
  print sprintf("  %d / %d files failed crc32 validation.\n" .
                "  See %s for details.\n",
                scalar keys %failures,
                scalar @ARGV,
                $failure_report_basename);

  my $failure_report_fullname = $failure_report_basename;
  if (defined -f $ARGV[0]) {
    $failure_report_fullname
      = dirname($ARGV[0]) . '/' . $failure_report_basename;
  }

  $OUTPUT_AUTOFLUSH = 0;
  open my $fh, '>' . $failure_report_fullname or die $!;
  foreach my $dirname (sort keys %failures) {
    print {$fh} $dirname . "\n";
    foreach my $basename (sort keys %{$failures{$dirname}}) {
      print {$fh} sprintf("  crc32(%s) basename(%s)\n",
                          $failures{$dirname}{$basename},
                          $basename);
    }
  }
  close $fh;
  $OUTPUT_AUTOFLUSH = 1;
}

print sprintf("\n%s done! (%d seconds elapsed)\n" .
              "Press enter to exit.\n",
              basename($0),
              time() - $BASETIME);
<STDIN>;

I'm trying to emulate RapidCRC's ability to check crc32 values within filenames on Windows Vista Ultimate 64-bit. However, I seem to be running into some kind of argument limitation.

I wrote a quick Perl script, created a batch file to call it, then placed a shortcut to the batch file in %APPDATA%\Microsoft\Windows\SendTo

This works great when I select about 20 files or less, right-click and "send to" my batch file script. However, nothing happens at all when I select more than that. I suspect there's a character or number of arguments limit somewhere.

Hopefully I'm missing something simple and that the solution or a workaround isn't too painful.

References:

batch file (crc32_inline.bat):

crc32_inline.pl %*

Perl notes:

I'm using (strawberry) perl v5.10.0

I have C:\strawberry\perl\bin in my path, which is where crc32.bat exists.

perl script (crc32_inline.pl):

#!/usr/bin/env perl

use strict;
use warnings;

use Cwd;
use English qw( -no_match_vars );
use File::Basename;

$OUTPUT_AUTOFLUSH = 1;

my $crc32_cmd = 'crc32.bat';
my $failure_report_basename = 'crc32_failures.txt';
my %failures = ();

print "\n";
foreach my $arg (@ARGV) {

  # if the file has a crc, check to see if it matches the calculated
  # crc.
  if (-f $arg and $arg =~ /\[([0-9a-f]{8})\]/i) {
    my $crc = uc $1;
    my $basename = basename($arg);
    print "checking ${basename}... ";
    my $calculated_crc = uc `${crc32_cmd} "${arg}"`;
    chomp($calculated_crc);
    if ($crc eq $calculated_crc) {
      print "passed.\n";
    }
    else {
      print "FAILED (calculated ${calculated_crc})\n";
      my $dirname = dirname($arg);
      $failures{$dirname}{$basename} = $calculated_crc;
    }
  }
}

print "\nReport Summary:\n";
if (scalar keys %failures == 0) {
  print "  All files OK\n";
}
else {
  print sprintf("  %d / %d files failed crc32 validation.\n" .
                "  See %s for details.\n",
                scalar keys %failures,
                scalar @ARGV,
                $failure_report_basename);

  my $failure_report_fullname = $failure_report_basename;
  if (defined -f $ARGV[0]) {
    $failure_report_fullname
      = dirname($ARGV[0]) . '/' . $failure_report_basename;
  }

  $OUTPUT_AUTOFLUSH = 0;
  open my $fh, '>' . $failure_report_fullname or die $!;
  foreach my $dirname (sort keys %failures) {
    print {$fh} $dirname . "\n";
    foreach my $basename (sort keys %{$failures{$dirname}}) {
      print {$fh} sprintf("  crc32(%s) basename(%s)\n",
                          $failures{$dirname}{$basename},
                          $basename);
    }
  }
  close $fh;
  $OUTPUT_AUTOFLUSH = 1;
}

print sprintf("\n%s done! (%d seconds elapsed)\n" .
              "Press enter to exit.\n",
              basename($0),
              time() - $BASETIME);
<STDIN>;

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始终不够爱げ你 2024-08-15 15:33:20

我建议只在“发送到”目录中放置脚本的快捷方式,而不是通过批处理文件执行此操作(这受到 cmd.exe 对命令行长度的限制)。

I will recommend just putting a shortcut to your script in the "Send To" directory instead of doing it via a batch file (which is subject to cmd.exes limits on command line length).

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