我已经从svn.apache.org下载了预提交钩子脚本“commit-mime-type-check.pl” 我正在 Windows 上工作，只有两件事可以更改 svnlook 二进制文件的路径和临时目录的路径。我做到了. 但我收到以下错误
Error: Commit failed (details follow):
Error: Commit blocked by pre-commit hook (exit code 1) with output:
Error: '-' is not recognized as an internal or external command,
Error: operable program or batch file.
Error: C:\vsvn\Repositories\myproj\hooks\local_commit_mime_eol_check.pl:
Error: `C:\vsvn\bin\svnlook.exe changed C:\vsvn\Repositories\myproj -t 16-1l' failed
Error: with no output.
Finished!:
我自己调试了一下，发现哪里出错了。
my $pid = open(SAFE_READ, '-|');
我阅读了关于用“-|”打开的解释 在安全管道下的 [_http://perldoc.perl.org/perlipc.html#Using-open()-for-IPC] 打开
安全管道打开 IPC 的另一个有趣方法是让您的单个程序成为多进程并在您自己之间（甚至在彼此之间）进行通信。open() 函数将接受“-|”的文件参数 或 "|-" 来做一件非常有趣的事情：它派生一个连接到您打开的文件句柄的孩子。孩子正在运行与父母相同的程序。例如，这对于在假定的 UID 或 GID 下运行时安全打开文件很有用。如果您将管道打开到减号，您可以写入您打开的文件句柄，您的孩子会在他的 STDIN 中找到它。如果您从减号打开管道，您可以从您打开的文件句柄中读取您的孩子写入他的 STDOUT 的任何内容。
我无法理解的原因是不兼容或什么。因为它最初是在 linux box 上编写的，对于管道和内部进程通信非常丰富。我总是觉得窗户很差。（没有冒犯任何人。这是我个人的感受。让我们回到主题。我正在寻找所有疯狂的建议。不寻求修复，但如果我得到了，我将不胜感激
我尝试了一切，但最后失败了，如果有人也面临同样的问题，我试着用谷歌搜索。链接不多，但找到了这个，有趣的部分是这个，它没有解决。那我没办法，只能在这里问了。
以下是供您参考的脚本代码
#!/usr/bin/env perl
# ====================================================================
# commit-mime-type-check.pl: check that every added file has the
# svn:mime-type property set and every added file with a mime-type
# matching text/* also has svn:eol-style set. If any file fails this
# test the user is sent a verbose error message suggesting solutions and
# the commit is aborted.
#
# Usage: commit-mime-type-check.pl REPOS TXN-NAME
# ====================================================================
# Most of commit-mime-type-check.pl was taken from
# commit-access-control.pl, Revision 9986, 2004-06-14 16:29:22 -0400.
# ====================================================================
# Copyright (c) 2000-2004 CollabNet. All rights reserved.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at http://subversion.tigris.org/license.html.
# If newer versions of this license are posted there, you may use a
# newer version instead, at your option.
#
# This software consists of voluntary contributions made by many
# individuals. For exact contribution history, see the revision
# history and logs, available at http://subversion.tigris.org/.
# ====================================================================
# Turn on warnings the best way depending on the Perl version.
BEGIN {
if ( $] >= 5.006_000)
{ require warnings; import warnings; }
else
{ $^W = 1; }
}
use strict;
use Carp;
######################################################################
# Configuration section.
# Svnlook path.
my $svnlook = "/usr/bin/svnlook";
# Since the path to svnlook depends upon the local installation
# preferences, check that the required program exists to insure that
# the administrator has set up the script properly.
{
my $ok = 1;
foreach my $program ($svnlook)
{
if (-e $program)
{
unless (-x $program)
{
warn "$0: required program `$program' is not executable, ",
"edit $0.\n";
$ok = 0;
}
}
else
{
warn "$0: required program `$program' does not exist, edit $0.\n";
$ok = 0;
}
}
exit 1 unless $ok;
}
######################################################################
# Initial setup/command-line handling.
&usage unless @ARGV == 2;
my $repos = shift;
my $txn = shift;
unless (-e $repos)
{
&usage("$0: repository directory `$repos' does not exist.");
}
unless (-d $repos)
{
&usage("$0: repository directory `$repos' is not a directory.");
}
# Define two constant subroutines to stand for read-only or read-write
# access to the repository.
sub ACCESS_READ_ONLY () { 'read-only' }
sub ACCESS_READ_WRITE () { 'read-write' }
######################################################################
# Harvest data using svnlook.
# Change into /tmp so that svnlook diff can create its .svnlook
# directory.
my $tmp_dir = '/tmp';
chdir($tmp_dir)
or die "$0: cannot chdir `$tmp_dir': $!\n";
# Figure out what files have added using svnlook.
my @files_added;
foreach my $line (&read_from_process($svnlook, 'changed', $repos, '-t', $txn))
{
# Add only files that were added to @files_added
if ($line =~ /^A. (.*[^\/])$/)
{
push(@files_added, $1);
}
}
my @errors;
foreach my $path ( @files_added )
{
my $mime_type;
my $eol_style;
# Parse the complete list of property values of the file $path to extract
# the mime-type and eol-style
foreach my $prop (&read_from_process($svnlook, 'proplist', $repos, '-t',
$txn, '--verbose', $path))
{
if ($prop =~ /^\s*svn:mime-type : (\S+)/)
{
$mime_type = $1;
}
elsif ($prop =~ /^\s*svn:eol-style : (\S+)/)
{
$eol_style = $1;
}
}
# Detect error conditions and add them to @errors
if (not $mime_type)
{
push @errors, "$path : svn:mime-type is not set";
}
elsif ($mime_type =~ /^text\// and not $eol_style)
{
push @errors, "$path : svn:mime-type=$mime_type but svn:eol-style is not set";
}
}
# If there are any errors list the problem files and give information
# on how to avoid the problem. Hopefully people will set up auto-props
# and will not see this verbose message more than once.
if (@errors)
{
warn "$0:\n\n",
join("\n", @errors), "\n\n",
<<EOS;
Every added file must have the svn:mime-type property set. In
addition text files must have the svn:eol-style property set.
For binary files try running
svn propset svn:mime-type application/octet-stream path/of/file
For text files try
svn propset svn:mime-type text/plain path/of/file
svn propset svn:eol-style native path/of/file
You may want to consider uncommenting the auto-props section
in your ~/.subversion/config file. Read the Subversion book
(http://svnbook.red-bean.com/), Chapter 7, Properties section,
Automatic Property Setting subsection for more help.
EOS
exit 1;
}
else
{
exit 0;
}
sub usage
{
warn "@_\n" if @_;
die "usage: $0 REPOS TXN-NAME\n";
}
sub safe_read_from_pipe
{
unless (@_)
{
croak "$0: safe_read_from_pipe passed no arguments.\n";
}
print "Running @_\n";
my $pid = open(SAFE_READ, '-|');
unless (defined $pid)
{
die "$0: cannot fork: $!\n";
}
unless ($pid)
{
open(STDERR, ">&STDOUT")
or die "$0: cannot dup STDOUT: $!\n";
exec(@_)
or die "$0: cannot exec `@_': $!\n";
}
my @output;
while (<SAFE_READ>)
{
chomp;
push(@output, $_);
}
close(SAFE_READ);
my $result = $?;
my $exit = $result >> 8;
my $signal = $result & 127;
my $cd = $result & 128 ? "with core dump" : "";
if ($signal or $cd)
{
warn "$0: pipe from `@_' failed $cd: exit=$exit signal=$signal\n";
}
if (wantarray)
{
return ($result, @output);
}
else
{
return $result;
}
}
sub read_from_process
{
unless (@_)
{
croak "$0: read_from_process passed no arguments.\n";
}
my ($status, @output) = &safe_read_from_pipe(@_);
if ($status)
{
if (@output)
{
die "$0: `@_' failed with this output:\n", join("\n", @output), "\n";
}
else
{
die "$0: `@_' failed with no output.\n";
}
}
else
{
return @output;
}
}