scripts/svn_load_dirs.pl
changeset 64 b73eec62825a
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/scripts/svn_load_dirs.pl	Mon Aug 04 22:43:48 2008 +0000
@@ -0,0 +1,2043 @@
+#!/usr/bin/perl -w
+
+# $HeadURL$
+# $LastChangedDate$
+# $LastChangedBy$
+# $LastChangedRevision$
+
+$| = 1;
+
+use strict;
+use Carp;
+use Cwd;
+use Digest::MD5  2.20;
+use File::Copy   2.03;
+use File::Find;
+use File::Path   1.0404;
+use File::Temp   0.12   qw(tempdir tempfile);
+use Getopt::Long 2.25;
+use Text::Wrap;
+use URI          1.17;
+use English;
+
+$Text::Wrap::columns = 72;
+
+# Specify the location of the svn command.
+my $svn = '/usr/bin/svn';
+
+# Process the command line options.
+
+# The base URL for the portion of the repository to work in.  Note
+# that this does not have to be the root of the subversion repository,
+# it can point to a subdirectory in the repository.
+my $repos_base_url;
+
+# The relative path from the repository base URL to work in to the
+# directory to load the input directories into.
+my $repos_load_rel_path;
+
+# To specify where tags, which are simply copies of the imported
+# directory, should be placed relative to the repository base URL, use
+# the -t command line option.  This value must contain regular
+# expressions that match portions of the input directory names to
+# create an unique tag for each input directory.  The regular
+# expressions are surrounded by a specified character to distinguish
+# the regular expression from the normal directory path.
+my $opt_import_tag_location;
+
+# Do not ask for any user input.  Just go ahead and do everything.
+my $opt_no_user_input;
+
+# Do not automatically set the svn:executable property based on the
+# file's exe bit.
+my $opt_no_auto_exe;
+
+# Username to use for commits.
+my $opt_svn_username;
+
+# Password to use for commits.
+my $opt_svn_password;
+
+# Verbosity level.
+my $opt_verbose;
+
+# Path to already checked-out working copy.
+my $opt_existing_wc_dir;
+
+# List of filename patterns to ignore (as in .subversion/config's
+# "global-ignores" option).
+my $opt_glob_ignores;
+
+# This is the character used to separate regular expressions occuring
+# in the tag directory path from the path itself.
+my $REGEX_SEP_CHAR = '@';
+
+# This specifies a configuration file that contains a list of regular
+# expressions to check against a file and the properties to set on
+# matching files.
+my $property_config_filename;
+
+GetOptions('no_user_input'           => \$opt_no_user_input,
+           'no_auto_exe'             => \$opt_no_auto_exe,
+           'property_cfg_filename=s' => \$property_config_filename,
+           'svn_password=s'          => \$opt_svn_password,
+           'svn_username=s'          => \$opt_svn_username,
+           'tag_location=s'          => \$opt_import_tag_location,
+           'verbose+'                => \$opt_verbose,
+           'wc=s'                    => \$opt_existing_wc_dir,
+           'glob_ignores=s'          => \$opt_glob_ignores)
+  or &usage;
+&usage("$0: too few arguments") if @ARGV < 2;
+
+$repos_base_url      = shift;
+$repos_load_rel_path = shift;
+
+# Check that the repository base URL and the import directories do not
+# contain any ..'s.
+if ($repos_base_url =~ /\.{2}/)
+  {
+    die "$0: repos base URL $repos_base_url cannot contain ..'s.\n";
+  }
+if ($repos_load_rel_path =~ /\.{2}/)
+  {
+    die "$0: repos import relative directory path $repos_load_rel_path ",
+        "cannot contain ..'s.\n";
+  }
+
+# If there are no directories listed on the command line, then the
+# directories are read from standard input.  In this case, the
+# -no_user_input command line option must be specified.
+if (!@ARGV and !$opt_no_user_input)
+  {
+    &usage("$0: must use -no_user_input if no dirs listed on command line.");
+  }
+
+# The tag option cannot be used when directories are read from
+# standard input because tags may collide and no user input can be
+# taken to verify that the input is ok.
+if (!@ARGV and $opt_import_tag_location)
+  {
+    &usage("$0: cannot use -tag_location when dirs are read from stdin.");
+  }
+
+# If the tag directory is set, then the import directory cannot be '.'.
+if (defined $opt_import_tag_location and $repos_load_rel_path eq '.')
+  {
+    &usage("$0: cannot set import_dir to '.' and use -t command line option.");
+  }
+
+# Set the svn command line options that are used anytime svn connects
+# to the repository.
+my @svn_use_repos_cmd_opts;
+&set_svn_use_repos_cmd_opts($opt_svn_username, $opt_svn_password);
+
+# Check that the tag directories do not contain any ..'s.  Also, the
+# import and tag directories cannot be absolute.
+if (defined $opt_import_tag_location and $opt_import_tag_location =~ /\.{2}/)
+  {
+    die "$0: repos tag relative directory path $opt_import_tag_location ",
+        "cannot contain ..'s.\n";
+  }
+if ($repos_load_rel_path =~ m|^/|)
+  {
+    die "$0: repos import relative directory path $repos_load_rel_path ",
+        "cannot start with /.\n";
+  }
+if (defined $opt_import_tag_location and $opt_import_tag_location =~ m|^/|)
+  {
+    die "$0: repos tagrelative directory path $opt_import_tag_location ",
+        "cannot start with /.\n";
+  }
+
+if (defined $opt_existing_wc_dir)
+  {
+    unless (-e $opt_existing_wc_dir)
+      {
+        die "$0: working copy '$opt_existing_wc_dir' does not exist.\n";
+      }
+
+    unless (-d _)
+      {
+        die "$0: working copy '$opt_existing_wc_dir' is not a directory.\n";
+      }
+
+    unless (-d "$opt_existing_wc_dir/.svn")
+      {
+        die "$0: working copy '$opt_existing_wc_dir' does not have .svn ",
+            "directory.\n";
+      }
+
+    $opt_existing_wc_dir = Cwd::abs_path($opt_existing_wc_dir)
+  }
+
+# If no glob_ignores specified, try to deduce from config file,
+# or use the default below.
+my $ignores_str =
+    '*.o *.lo *.la #*# .*.rej *.rej .*~ *~ .#* .DS_Store';
+
+if ( defined $opt_glob_ignores)
+  {
+    $ignores_str = $opt_glob_ignores;
+  }
+elsif ( -f "$ENV{HOME}/.subversion/config" )
+  {
+    open my $conf, "$ENV{HOME}/.subversion/config";
+    while (<$conf>)
+      {
+        if ( /^global-ignores\s*=\s*(.*?)\s*$/ )
+          {
+	    $ignores_str = $1;
+            last;
+          }
+      }
+  }
+
+my @glob_ignores = map
+                     {
+                       s/\./\\\./g; s/\*/\.\*/g; "^$_\$";
+                     } split(/\s+/, $ignores_str);
+unshift @glob_ignores, '\.svn$';
+
+# Convert the string URL into a URI object.
+$repos_base_url    =~ s|/*$||;
+my $repos_base_uri = URI->new($repos_base_url);
+
+# Check that $repos_load_rel_path is not a directory here implying
+# that a command line option was forgotten.
+if ($repos_load_rel_path ne '.' and -d $repos_load_rel_path)
+  {
+    die "$0: import_dir '$repos_load_rel_path' is a directory.\n";
+  }
+
+# The remaining command line arguments should be directories.  Check
+# that they all exist and that there are no duplicates.
+if (@ARGV)
+  {
+    my %dirs;
+    foreach my $dir (@ARGV)
+      {
+        unless (-e $dir)
+          {
+            die "$0: directory '$dir' does not exist.\n";
+          }
+
+        unless (-d _)
+          {
+            die "$0: directory '$dir' is not a directory.\n";
+          }
+
+        if ($dirs{$dir})
+          {
+            die "$0: directory '$dir' is listed more than once on command ",
+                "line.\n";
+          }
+        $dirs{$dir} = 1;
+      }
+  }
+
+# Create the tag locations and print them for the user to review.
+# Check that there are no duplicate tags.
+my %load_tags;
+if (@ARGV and defined $opt_import_tag_location)
+  {
+    my %seen_tags;
+
+    foreach my $load_dir (@ARGV)
+      {
+        my $load_tag = &get_tag_dir($load_dir);
+
+        print "Directory $load_dir will be tagged as $load_tag\n";
+
+        if ($seen_tags{$load_tag})
+          {
+            die "$0: duplicate tag generated.\n";
+          }
+        $seen_tags{$load_tag} = 1;
+
+        $load_tags{$load_dir} = $load_tag;
+      }
+
+    exit 0 unless &get_answer("Please examine identified tags.  Are they " .
+                              "acceptable? (Y/n) ", 'ny', 1);
+    print "\n";
+  }
+
+# Load the property configuration filename, if one was specified, into
+# an array of hashes, where each hash contains a regular expression
+# and a property to apply to the file if the regular expression
+# matches.
+my @property_settings;
+if (defined $property_config_filename and length $property_config_filename)
+  {
+    open(CFG, $property_config_filename)
+      or die "$0: cannot open '$property_config_filename' for reading: $!\n";
+
+    my $ok = 1;
+
+    while (my $line = <CFG>)
+      {
+        next if $line =~ /^\s*$/;
+        next if $line =~ /^\s*#/;
+
+        # Split the input line into words taking into account that
+        # single or double quotes may define a single word with
+        # whitespace in it.  The format for the file is
+        # regex control property_name property_value
+        my @line = &split_line($line);
+        next if @line == 0;
+
+        unless (@line == 2 or @line == 4)
+          {
+            warn "$0: line $. of '$property_config_filename' has to have 2 ",
+                 "or 4 columns.\n";
+            $ok = 0;
+            next;
+          }
+        my ($regex, $control, $property_name, $property_value) = @line;
+
+        unless ($control eq 'break' or $control eq 'cont')
+          {
+            warn "$0: line $. of '$property_config_filename' has illegal ",
+                 "value for column 3 '$control', must be 'break' or 'cont'.\n";
+            $ok = 0;
+            next;
+          }
+
+        # Compile the regular expression.
+        my $re;
+        eval { $re = qr/$regex/i };
+        if ($@)
+          {
+            warn "$0: line $. of '$property_config_filename' regex '$regex' ",
+                 "does not compile:\n$@\n";
+            $ok = 0;
+            next;
+          }
+
+        push(@property_settings, {name    => $property_name,
+                                  value   => $property_value,
+                                  control => $control,
+                                  re      => $re});
+      }
+    close(CFG)
+      or warn "$0: error in closing '$property_config_filename' for ",
+              "reading: $!\n";
+
+    exit 1 unless $ok;
+  }
+
+# Check that the svn base URL works by running svn log on it.  Only
+# get the HEAD revision log message; there's no need to waste
+# bandwidth seeing all of the log messages.
+print "Checking that the base URL is a Subversion repository.\n";
+read_from_process($svn, 'log', '-r', 'HEAD',
+                  @svn_use_repos_cmd_opts, $repos_base_uri);
+print "\n";
+
+my $orig_cwd = cwd;
+
+# The first step is to determine the root of the svn repository.  Do
+# this with the svn log command.  Take the svn_url hostname and port
+# as the initial url and append to it successive portions of the final
+# path until svn log succeeds.
+print "Finding the root URL of the Subversion repository.\n";
+my $repos_root_uri;
+my $repos_root_uri_path;
+my $repos_base_path_segment;
+{
+  my $r = $repos_base_uri->clone;
+  my @path_segments            = grep { length($_) } $r->path_segments;
+  my @repos_base_path_segments = @path_segments;
+  unshift(@path_segments, '');
+  $r->path('');
+  my @r_path_segments;
+
+  while (@path_segments)
+    {
+      $repos_root_uri_path = shift @path_segments;
+      push(@r_path_segments, $repos_root_uri_path);
+      $r->path_segments(@r_path_segments);
+      if (safe_read_from_pipe($svn, 'log', '-r', 'HEAD',
+                              @svn_use_repos_cmd_opts, $r) == 0)
+        {
+          $repos_root_uri = $r;
+          last;
+        }
+      shift @repos_base_path_segments;
+    }
+  $repos_base_path_segment = join('/', @repos_base_path_segments);
+}
+
+if ($repos_root_uri)
+  {
+    print "Determined that the svn root URL is $repos_root_uri.\n\n";
+  }
+else
+  {
+    die "$0: cannot determine root svn URL.\n";
+  }
+
+# Create a temporary directory for svn to work in.
+my $temp_dir = tempdir( "svn_load_dirs_XXXXXXXXXX", TMPDIR => 1 );
+
+# Put in a signal handler to clean up any temporary directories.
+sub catch_signal {
+  my $signal = shift;
+  warn "$0: caught signal $signal.  Quitting now.\n";
+  exit 1;
+}
+
+$SIG{HUP}  = \&catch_signal;
+$SIG{INT}  = \&catch_signal;
+$SIG{TERM} = \&catch_signal;
+$SIG{PIPE} = \&catch_signal;
+
+# Create an object that when DESTROY'ed will delete the temporary
+# directory.  The CLEANUP flag to tempdir should do this, but they
+# call rmtree with 1 as the last argument which takes extra security
+# measures that do not clean up the .svn directories.
+my $temp_dir_cleanup = Temp::Delete->new;
+
+# Determine the native end of line style for this system.  Do this the
+# most portable way, by writing a file with a single \n in non-binary
+# mode and then reading the file in binary mode.
+my $native_eol = &determine_native_eol;
+
+# Check if all the directories exist to load the directories into the
+# repository.  If not, ask if they should be created.  For tags, do
+# not create the tag directory itself, that is done on the svn cp.
+{
+  print "Finding if any directories need to be created in repository.\n";
+
+  my @dirs_to_create;
+  my @urls_to_create;
+  my %seen_dir;
+  my @load_tags_without_last_segment;
+
+  # Assume that the last portion of the tag directory contains the
+  # version number and remove it from the directories to create,
+  # because the tag directory will be created by svn cp.
+  foreach my $load_tag (sort values %load_tags)
+    {
+      # Skip this tag if there is only one segment in its name.
+      my $index = rindex($load_tag, '/');
+      next if $index == -1;
+
+      # Trim off the last segment and record the result.
+      push(@load_tags_without_last_segment, substr($load_tag, 0, $index));
+    }
+  
+  foreach my $dir ($repos_load_rel_path, @load_tags_without_last_segment)
+    {
+      next unless length $dir;
+      my $d = '';
+      foreach my $segment (split('/', $dir))
+        {
+          $d = length $d ? "$d/$segment" : $segment;
+          my $url = "$repos_base_url/$d";
+          unless ($seen_dir{$d})
+            {
+              $seen_dir{$d} = 1;
+              if (safe_read_from_pipe($svn, 'log', '-r', 'HEAD',
+                                      @svn_use_repos_cmd_opts, $url) != 0)
+                {
+                  push(@dirs_to_create, $d);
+                  push(@urls_to_create, $url);
+                }
+            }
+        }
+    }
+
+  if (@dirs_to_create)
+    {
+      print "The following directories do not exist and need to exist:\n";
+      foreach my $dir (@dirs_to_create)
+        {
+          print "  $dir\n";
+        }
+      exit 0 unless &get_answer("You must add them now to load the " .
+                                "directories.  Continue (Y/n)? ", 'ny', 1);
+
+      my $message = "Create directories to load project into.\n\n";
+
+      foreach my $dir (@dirs_to_create)
+        {
+          if (length $repos_base_path_segment)
+            {
+              $message .= "* $repos_base_path_segment/$dir: New directory.\n";
+            }
+          else
+            {
+              $message .= "* $dir: New directory.\n";
+            }
+        }
+      $message = wrap('', '  ', $message);
+
+      read_from_process($svn, 'mkdir', @svn_use_repos_cmd_opts,
+                        '-m', $message, @urls_to_create);
+    }
+  else
+    {
+      print "No directories need to be created to prepare repository.\n";
+    }
+}
+
+# Either checkout a new working copy from the repository or use an
+# existing working copy.
+if (defined $opt_existing_wc_dir)
+  {
+    # Update an already existing working copy.
+    print "Not checking out anything; using existing working directory at\n";
+    print "$opt_existing_wc_dir\n";
+
+    chdir($opt_existing_wc_dir)
+      or die "$0: cannot chdir '$opt_existing_wc_dir': $!\n";
+
+    read_from_process($svn, 'update', @svn_use_repos_cmd_opts);
+  }
+else
+  {
+    # Check out the svn repository starting at the svn URL into a
+    # fixed directory name.
+    my $checkout_dir_name = 'my_import_wc';
+
+    # Check out only the directory being imported to, otherwise the
+    # checkout of the entire base URL can be very huge, if it contains
+    # a large number of tags.
+    my $checkout_url;
+    if ($repos_load_rel_path eq '.')
+      {
+        $checkout_url = $repos_base_url;
+      }
+    else
+      {
+        $checkout_url = "$repos_base_url/$repos_load_rel_path";
+      }
+
+    print "Checking out $checkout_url into $temp_dir/$checkout_dir_name\n";
+
+    chdir($temp_dir)
+      or die "$0: cannot chdir '$temp_dir': $!\n";
+
+    read_from_process($svn, 'checkout',
+                      @svn_use_repos_cmd_opts,
+                      $checkout_url, $checkout_dir_name);
+
+    chdir($checkout_dir_name)
+      or die "$0: cannot chdir '$checkout_dir_name': $!\n";
+  }
+
+# At this point, the current working directory is the top level
+# directory of the working copy.  Record the absolute path to this
+# location because the script will chdir back here later on.
+my $wc_import_dir_cwd = cwd;
+
+# Set up the names for the path to the import and tag directories.
+my $repos_load_abs_path;
+if ($repos_load_rel_path eq '.')
+  {
+    $repos_load_abs_path = length($repos_base_path_segment) ?
+                           $repos_base_path_segment : "/";
+  }
+else
+  {
+    $repos_load_abs_path = length($repos_base_path_segment) ?
+                           "$repos_base_path_segment/$repos_load_rel_path" :
+                           $repos_load_rel_path;
+  }
+
+# Now go through each source directory and copy each file from the
+# source directory to the target directory.  For new target files, add
+# them to svn.  For files that no longer exist, delete them.
+my $print_rename_message = 1;
+my @load_dirs            = @ARGV;
+while (defined (my $load_dir = &get_next_load_dir))
+  {
+    my $load_tag = $load_tags{$load_dir};
+
+    if (defined $load_tag)
+      {
+        print "\nLoading $load_dir and will save in tag $load_tag.\n";
+      }
+    else
+      {
+        print "\nLoading $load_dir.\n";
+      }
+
+    # The first hash is keyed by the old name in a rename and the
+    # second by the new name.  The last variable contains a list of
+    # old and new filenames in a rename.
+    my %rename_from_files;
+    my %rename_to_files;
+    my @renamed_filenames;
+
+    unless ($opt_no_user_input)
+      {
+        my $repeat_loop;
+        do
+          {
+            $repeat_loop = 0;
+
+            my %add_files;
+            my %del_files;
+
+            # Get the list of files and directories in the repository
+            # working copy.  This hash is called %del_files because
+            # each file or directory will be deleted from the hash
+            # using the list of files and directories in the source
+            # directory, leaving the files and directories that need
+            # to be deleted.
+            %del_files = &recursive_ls_and_hash($wc_import_dir_cwd);
+
+            # This anonymous subroutine finds all the files and
+            # directories in the directory to load.  It notes the file
+            # type and for each file found, it deletes it from
+            # %del_files.
+            my $wanted = sub
+              {
+                s#^\./##;
+                return if $_ eq '.';
+
+                my $source_path = $_;
+                my $dest_path   = "$wc_import_dir_cwd/$_";
+
+                my ($source_type) = &file_info($source_path);
+                my ($dest_type)   = &file_info($dest_path);
+
+                # Fail if the destination type exists but is of a
+                # different type of file than the source type.
+                if ($dest_type ne '0' and $source_type ne $dest_type)
+                  {
+                    die "$0: does not handle changing source and destination ",
+                        "type for '$source_path'.\n";
+                  }
+
+                if ($source_type ne 'd' and
+                    $source_type ne 'f' and
+                    $source_type ne 'l')
+                  {
+                    warn "$0: skipping loading file '$source_path' of type ",
+                         "'$source_type'.\n";
+                    unless ($opt_no_user_input)
+                      {
+                        print STDERR "Press return to continue: ";
+                        <STDIN>;
+                      }
+                    return;
+                  }
+
+                unless (defined delete $del_files{$source_path})
+                  {
+                    $add_files{$source_path}{type} = $source_type;
+                  }
+              };
+
+            # Now change into the directory containing the files to
+            # load.  First change to the original directory where this
+            # script was run so that if the specified directory is a
+            # relative directory path, then the script can change into
+            # it.
+            chdir($orig_cwd)
+              or die "$0: cannot chdir '$orig_cwd': $!\n";
+            chdir($load_dir)
+              or die "$0: cannot chdir '$load_dir': $!\n";
+
+            find({no_chdir   => 1,
+                  preprocess => sub { sort { $b cmp $a }
+                                      grep { $_ !~ /^[._]svn$/ } @_ },
+                  wanted     => $wanted
+                 }, '.');
+
+            # At this point %add_files contains the list of new files
+            # and directories to be created in the working copy tree
+            # and %del_files contains the files and directories that
+            # need to be deleted.  Because there may be renames that
+            # have taken place, give the user the opportunity to
+            # rename any deleted files and directories to ones being
+            # added.
+            my @add_files = sort keys %add_files;
+            my @del_files = sort keys %del_files;
+
+            # Because the source code management system may keep the
+            # original renamed file or directory in the working copy
+            # until a commit, remove them from the list of deleted
+            # files or directories.
+            &filter_renamed_files(\@del_files, \%rename_from_files);
+
+            # Now change into the working copy directory in case any
+            # renames need to be performed.
+            chdir($wc_import_dir_cwd)
+              or die "$0: cannot chdir '$wc_import_dir_cwd': $!\n";
+
+            # Only do renames if there are both added and deleted
+            # files and directories.
+            if (@add_files and @del_files)
+              {
+                my $max = @add_files > @del_files ? @add_files : @del_files;
+
+                # Print the files that have been added and deleted.
+                # Find the deleted file with the longest name and use
+                # that for the width of the filename column.  Add one
+                # to the filename width to let the directory /
+                # character be appended to a directory name.
+                my $line_number_width = 4;
+                my $filename_width    = 0;
+                foreach my $f (@del_files)
+                  {
+                    my $l = length($f);
+                    $filename_width = $l if $l > $filename_width;
+                  }
+                ++$filename_width;
+                my $printf_format = "%${line_number_width}d";
+
+                if ($print_rename_message)
+                  {
+                    $print_rename_message = 0;
+                    print "\n",
+                      "The following table lists files and directories that\n",
+                      "exist in either the Subversion repository or the\n",
+                      "directory to be imported but not both.  You now have\n",
+                      "the opportunity to match them up as renames instead\n",
+                      "of deletes and adds.  This is a Good Thing as it'll\n",
+                      "make the repository take less space.\n\n",
+                      "The left column lists files and directories that\n",
+                      "exist in the Subversion repository and do not exist\n",
+                      "in the directory being imported.  The right column\n",
+                      "lists files and directories that exist in the\n",
+                      "directory being imported.  Match up a deleted item\n",
+                      "from the left column with an added item from the\n",
+                      "right column.  Note the line numbers on the left\n",
+                      "which you type into this script to have a rename\n",
+                      "performed.\n";
+                  }
+
+                # Sort the added and deleted files and directories by
+                # the lowercase versions of their basenames instead of
+                # their complete path, which makes finding files that
+                # were moved into different directories easier to
+                # match up.
+                @add_files = map { $_->[0] }
+                             sort { $a->[1] cmp $b->[1] }
+                             map { [$_->[0], lc($_->[1])] }
+                             map { [$_, m#([^/]+)$#] }
+                             @add_files;
+                @del_files = map { $_->[0] }
+                             sort { $a->[1] cmp $b->[1] }
+                             map { [$_->[0], lc($_->[1])] }
+                             map { [$_, m#([^/]+)$#] }
+                             @del_files;
+
+              RELIST:
+
+                for (my $i=0; $i<$max; ++$i)
+                  {
+                    my $add_filename = '';
+                    my $del_filename = '';
+                    if ($i < @add_files)
+                      {
+                        $add_filename = $add_files[$i];
+                        if ($add_files{$add_filename}{type} eq 'd')
+                          {
+                            $add_filename .= '/';
+                          }
+                      }
+                    if ($i < @del_files)
+                      {
+                        $del_filename = $del_files[$i];
+                        if ($del_files{$del_filename}{type} eq 'd')
+                          {
+                            $del_filename .= '/';
+                          }
+                      }
+
+                    if ($i % 22 == 0)
+                      {
+                        print
+                          "\n",
+                          " " x $line_number_width,
+                          " ",
+                          "Deleted", " " x ($filename_width-length("Deleted")),
+                          " ",
+                          "Added\n";
+                      }
+
+                    printf $printf_format, $i;
+                    print  " ", $del_filename,
+                           "_" x ($filename_width - length($del_filename)),
+                           " ", $add_filename, "\n";
+
+                    if (($i+1) % 22 == 0)
+                      {
+                        unless (&get_answer("Continue printing (Y/n)? ",
+                                            'ny', 1))
+                          {
+                            last;
+                          }
+                      }
+                  }
+
+                # Get the feedback from the user.
+                my $line;
+                my $add_filename;
+                my $add_index;
+                my $del_filename;
+                my $del_index;
+                my $got_line = 0;
+                do {
+                  print "Enter two indexes for each column to rename, ",
+                        "(R)elist, or (F)inish: ";
+                  $line = <STDIN>;
+                  $line = '' unless defined $line;
+                  if ($line =~ /^R$/i )
+                    {
+                      goto RELIST;
+                    }
+                  
+                  if ($line =~ /^F$/i)
+                    {
+                      $got_line = 1;
+                    }
+                  elsif ($line =~ /^(\d+)\s+(\d+)$/)
+                    {
+                      print "\n";
+
+                      $del_index = $1;
+                      $add_index = $2;
+                      if ($del_index >= @del_files)
+                        {
+                          print "Delete index $del_index is larger than ",
+                                "maximum index of ", scalar @del_files - 1,
+                                ".\n";
+                          $del_index = undef;
+                        }
+                      if ($add_index > @add_files)
+                        {
+                          print "Add index $add_index is larger than maximum ",
+                                "index of ", scalar @add_files - 1, ".\n";
+                          $add_index = undef;
+                        }
+                      $got_line = defined $del_index && defined $add_index;
+
+                      # Check that the file or directory to be renamed
+                      # has the same file type.
+                      if ($got_line)
+                        {
+                          $add_filename = $add_files[$add_index];
+                          $del_filename = $del_files[$del_index];
+                          if ($add_files{$add_filename}{type} ne
+                              $del_files{$del_filename}{type})
+                            {
+                              print "File types for $del_filename and ",
+                                    "$add_filename differ.\n";
+                              $got_line = undef;
+                            }
+                        }
+                    }
+                } until ($got_line);
+
+                if ($line !~ /^F$/i)
+                  {
+                    print "Renaming $del_filename to $add_filename.\n";
+
+                    $repeat_loop = 1;
+
+                    # Because subversion cannot rename the same file
+                    # or directory twice, which includes doing a
+                    # rename of a file in a directory that was
+                    # previously renamed, a commit has to be
+                    # performed.  Check if the file or directory being
+                    # renamed now would cause such a problem and
+                    # commit if so.
+                    my $do_commit_now = 0;
+                    foreach my $rename_to_filename (keys %rename_to_files)
+                      {
+                        if (contained_in($del_filename,
+                                         $rename_to_filename,
+                                         $rename_to_files{$rename_to_filename}{type}))
+                          {
+                            $do_commit_now = 1;
+                            last;
+                          }
+                      }
+
+                    if ($do_commit_now)
+                      {
+                        print "Now committing previously run renames.\n";
+                        &commit_renames($load_dir,
+                                        \@renamed_filenames,
+                                        \%rename_from_files,
+                                        \%rename_to_files);
+                      }
+
+                    push(@renamed_filenames, $del_filename, $add_filename);
+                    {
+                      my $d = $del_files{$del_filename};
+                      $rename_from_files{$del_filename} = $d;
+                      $rename_to_files{$add_filename}   = $d;
+                    }
+
+                    # Check that any required directories to do the
+                    # rename exist.
+                    my @add_segments = split('/', $add_filename);
+                    pop(@add_segments);
+                    my $add_dir = '';
+                    my @add_dirs;
+                    foreach my $segment (@add_segments)
+                      {
+                        $add_dir = length($add_dir) ? "$add_dir/$segment" :
+                                                      $segment;
+                        unless (-d $add_dir)
+                          {
+                            push(@add_dirs, $add_dir);
+                          }
+                      }
+
+                    if (@add_dirs)
+                      {
+                        read_from_process($svn, 'mkdir', @add_dirs);
+                      }
+
+                    read_from_process($svn, 'mv',
+                                      $del_filename, $add_filename);
+                  }
+              }
+          } while ($repeat_loop);
+      }
+
+    # If there are any renames that have not been committed, then do
+    # that now.
+    if (@renamed_filenames)
+      {
+        &commit_renames($load_dir,
+                        \@renamed_filenames,
+                        \%rename_from_files,
+                        \%rename_to_files);
+      }
+
+    # At this point all renames have been performed.  Now get the
+    # final list of files and directories in the working copy
+    # directory.  The %add_files hash will contain the list of files
+    # and directories to add to the working copy and %del_files starts
+    # with all the files already in the working copy and gets files
+    # removed that are in the imported directory, which results in a
+    # list of files that should be deleted.  %upd_files holds the list
+    # of files that have been updated.
+    my %add_files;
+    my %del_files = &recursive_ls_and_hash($wc_import_dir_cwd);
+    my %upd_files;
+
+    # This anonymous subroutine copies files from the source directory
+    # to the working copy directory.
+    my $wanted = sub
+      {
+        s#^\./##;
+        return if $_ eq '.';
+
+        my $source_path = $_;
+        my $dest_path   = "$wc_import_dir_cwd/$_";
+
+        my ($source_type, $source_is_exe) = &file_info($source_path);
+        my ($dest_type)                   = &file_info($dest_path);
+
+        return if ($source_type ne 'd' and
+                   $source_type ne 'f' and
+                   $source_type ne 'l');
+
+        # Fail if the destination type exists but is of a different
+        # type of file than the source type.
+        if ($dest_type ne '0' and $source_type ne $dest_type)
+          {
+            die "$0: does not handle changing source and destination type ",
+                "for '$source_path'.\n";
+          }
+
+        # Determine if the file is being added or is an update to an
+        # already existing file using the file's digest.
+        my $del_info = delete $del_files{$source_path};
+        if (defined $del_info)
+          {
+            if (defined (my $del_digest = $del_info->{digest}))
+              {
+                my $new_digest = &digest_hash_file($source_path);
+                if ($new_digest ne $del_digest)
+                  {
+                    print "U   $source_path\n";
+                    $upd_files{$source_path} = $del_info;
+                  }
+              }
+          }
+        else
+          {
+            print "A   $source_path\n";
+            $add_files{$source_path}{type} = $source_type;
+
+            # Create an array reference to hold the list of properties
+            # to apply to this object.
+            unless (defined $add_files{$source_path}{properties})
+              {
+                $add_files{$source_path}{properties} = [];
+              }
+
+            # Go through the list of properties for a match on this
+            # file or directory and if there is a match, then apply
+            # the property to it.
+            foreach my $property (@property_settings)
+              {
+                my $re = $property->{re};
+                if ($source_path =~ $re)
+                  {
+                    my $property_name  = $property->{name};
+                    my $property_value = $property->{value};
+
+                    # The property value may not be set in the
+                    # configuration file, since the user may just want
+                    # to set the control flag.
+                    if (defined $property_name and defined $property_value)
+                      {
+                        # Ignore properties that do not apply to
+                        # directories.
+                        if ($source_type eq 'd')
+                          {
+                            if ($property_name eq 'svn:eol-style' or
+                                $property_name eq 'svn:executable' or
+                                $property_name eq 'svn:keywords' or
+                                $property_name eq 'svn:mime-type')
+                              {
+                                next;
+                              }
+                          }
+
+                        # Ignore properties that do not apply to
+                        # files.
+                        if ($source_type eq 'f')
+                          {
+                            if ($property_name eq 'svn:externals' or
+                                $property_name eq 'svn:ignore')
+                              {
+                                next;
+                              }
+                          }
+
+                        print "Adding to '$source_path' property ",
+                              "'$property_name' with value ",
+                              "'$property_value'.\n";
+
+                        push(@{$add_files{$source_path}{properties}},
+                             $property);
+                      }
+
+                    last if $property->{control} eq 'break';
+                  }
+              }
+          }
+
+        # Add svn:executable to files that have their executable bit
+        # set.
+        if ($source_is_exe and !$opt_no_auto_exe)
+          {
+            print "Adding to '$source_path' property 'svn:executable' with ",
+                  "value '*'.\n";
+            my $property = {name => 'svn:executable', value => '*'};
+            push (@{$add_files{$source_path}{properties}},
+                  $property);
+          }
+
+        # Now make sure the file or directory in the source directory
+        # exists in the repository.
+        if ($source_type eq 'd')
+          {
+            if ($dest_type eq '0')
+              {
+                mkdir($dest_path)
+                  or die "$0: cannot mkdir '$dest_path': $!\n";
+              }
+          }
+        elsif
+          ($source_type eq 'l') {
+            my $link_target = readlink($source_path)
+              or die "$0: cannot readlink '$source_path': $!\n";
+            if ($dest_type eq 'l')
+              {
+                my $old_target = readlink($dest_path)
+                  or die "$0: cannot readlink '$dest_path': $!\n";
+                return if ($old_target eq $link_target);
+                unlink($dest_path)
+                  or die "$0: unlink '$dest_path' failed: $!\n";
+              }
+            symlink($link_target, $dest_path)
+              or die "$0: cannot symlink '$dest_path' to '$link_target': $!\n";
+          }
+        elsif
+          ($source_type eq 'f') {
+            # Only copy the file if the digests do not match.
+            if ($add_files{$source_path} or $upd_files{$source_path})
+              {
+                copy($source_path, $dest_path)
+                  or die "$0: copy '$source_path' to '$dest_path': $!\n";
+              }
+          }
+        else
+          {
+            die "$0: does not handle copying files of type '$source_type'.\n";
+          }
+      };
+
+    # Now change into the directory containing the files to load.
+    # First change to the original directory where this script was run
+    # so that if the specified directory is a relative directory path,
+    # then the script can change into it.
+    chdir($orig_cwd)
+      or die "$0: cannot chdir '$orig_cwd': $!\n";
+    chdir($load_dir)
+      or die "$0: cannot chdir '$load_dir': $!\n";
+
+    find({no_chdir   => 1,
+          preprocess => sub { sort { $b cmp $a }
+                              grep { $_ !~ /^[._]svn$/ } @_ },
+          wanted     => $wanted
+         }, '.');
+
+    # The files and directories that are in %del_files are the files
+    # and directories that need to be deleted.  Because svn will
+    # return an error if a file or directory is deleted in a directory
+    # that subsequently is deleted, first find all directories and
+    # remove from the list any files and directories inside those
+    # directories from this list.  Work through the list repeatedly
+    # working from short to long names so that directories containing
+    # other files and directories will be deleted first.
+    my $repeat_loop;
+    do
+      {
+        $repeat_loop = 0;
+        my @del_files = sort {length($a) <=> length($b) || $a cmp $b}
+                        keys %del_files;
+        &filter_renamed_files(\@del_files, \%rename_from_files);
+        foreach my $file (@del_files)
+          {
+            if ($del_files{$file}{type} eq 'd')
+              {
+                my $dir        = "$file/";
+                my $dir_length = length($dir);
+                foreach my $f (@del_files)
+                  {
+                    next if $file eq $f;
+                    if (length($f) >= $dir_length and
+                        substr($f, 0, $dir_length) eq $dir)
+                      {
+                        print "d   $f\n";
+                        delete $del_files{$f};
+                        $repeat_loop = 1;
+                      }
+                  }
+
+                # If there were any deletions of files and/or
+                # directories inside a directory that will be deleted,
+                # then restart the entire loop again, because one or
+                # more keys have been deleted from %del_files.
+                # Equally important is not to stop this loop if no
+                # deletions have been done, otherwise later
+                # directories that may contain files and directories
+                # to be deleted will not be deleted.
+                last if $repeat_loop;
+              }
+          }
+      } while ($repeat_loop);
+
+    # What is left are files that are not in any directories to be
+    # deleted and directories to be deleted.  To delete the files,
+    # deeper files and directories must be deleted first.  Because we
+    # have a hash keyed by remaining files and directories to be
+    # deleted, instead of trying to figure out which directories and
+    # files are contained in other directories, just reverse sort by
+    # the path length and then alphabetically.
+    my @del_files = sort {length($b) <=> length($a) || $a cmp $b }
+                    keys %del_files;
+    &filter_renamed_files(\@del_files, \%rename_from_files);
+    foreach my $file (@del_files)
+      {
+        print "D   $file\n";
+      }
+
+    # Now change back to the trunk directory and run the svn commands.
+    chdir($wc_import_dir_cwd)
+      or die "$0: cannot chdir '$wc_import_dir_cwd': $!\n";
+
+    # If any of the added files have the svn:eol-style property set,
+    # then pass -b to diff, otherwise diff may fail because the end of
+    # lines have changed and the source file and file in the
+    # repository will not be identical.
+    my @diff_ignore_space_changes;
+
+    if (keys %add_files)
+      {
+        my @add_files = sort {length($a) <=> length($b) || $a cmp $b}
+                        keys %add_files;
+        my $target_filename = &make_targets_file(@add_files);
+        read_from_process($svn, 'add', '-N', '--targets', $target_filename);
+        unlink($target_filename);
+
+        # Add properties on the added files.
+        foreach my $add_file (@add_files)
+          {
+            foreach my $property (@{$add_files{$add_file}{properties}})
+              {
+                my $property_name  = $property->{name};
+                my $property_value = $property->{value};
+
+                if ($property_name eq 'svn:eol-style')
+                  {
+                    @diff_ignore_space_changes = ('-b');
+                  }
+                
+                # Write the value to a temporary file in case it's multi-line
+                my ($handle, $tmpfile) = tempfile(DIR => $temp_dir);
+                print $handle $property_value;
+                close($handle);
+
+                read_from_process($svn,
+                                  'propset',
+                                  $property_name,
+                                  '--file',
+                                  $tmpfile,
+                                  $add_file);
+              }
+          }
+      }
+    if (@del_files)
+      {
+        my $target_filename = &make_targets_file(@del_files);
+        read_from_process($svn, 'rm', '--targets', $target_filename);
+        unlink($target_filename);
+      }
+
+    # Go through the list of updated files and check the svn:eol-style
+    # property.  If it is set to native, then convert all CR, CRLF and
+    # LF's in the file to the native end of line characters.  Also,
+    # modify diff's command line so that it will ignore the change in
+    # end of line style.
+    if (keys %upd_files)
+      {
+        my @upd_files = sort {length($a) <=> length($b) || $a cmp $b}
+                        keys %upd_files;
+        foreach my $upd_file (@upd_files)
+          {
+            # Always append @BASE to a filename in case they contain a
+            # @ character, in which case the Subversion command line
+            # client will attempt to parse the characters after the @
+            # as a revision and most likely fail, or if the characters
+            # after the @ are a valid revision, then it'll possibly
+            # get the incorrect information.  So always append @BASE
+            # and any preceding @'s will be treated normally and the
+            # correct information will be retrieved.
+            my @command = ($svn,
+                           'propget',
+                           'svn:eol-style',
+                           "$upd_file\@BASE");
+            my @lines = read_from_process(@command);
+            next unless @lines;
+            if (@lines > 1)
+              {
+                warn "$0: '@command' returned more than one line of output: ",
+                  "'@lines'.\n";
+                next;
+              }
+
+            my $eol_style = $lines[0];
+            if ($eol_style eq 'native')
+              {
+                @diff_ignore_space_changes = ('-b');
+                if (&convert_file_to_native_eol($upd_file))
+                  {
+                    print "Native eol-style conversion modified $upd_file.\n";
+                  }
+              }
+          }
+      }
+
+    my $message = wrap('', '', "Load $load_dir into $repos_load_abs_path.\n");
+    read_from_process($svn, 'commit',
+                      @svn_use_repos_cmd_opts,
+                      '-m', $message);
+
+    # If an update is not run now after a commit, then some file and
+    # directory paths will have an older revisions associated with
+    # them and any future commits will fail because they are out of
+    # date.
+    read_from_process($svn, 'update', @svn_use_repos_cmd_opts);
+
+    # Now remove any files and directories to be deleted in the
+    # repository.
+    if (@del_files)
+      {
+        rmtree(\@del_files, 1, 0);
+      }
+
+    # Now make the tag by doing a copy in the svn repository itself.
+    if (defined $load_tag)
+      {
+        my $repos_tag_abs_path = length($repos_base_path_segment) ?
+                                 "$repos_base_path_segment/$load_tag" :
+                                 $load_tag;
+
+        my $from_url = $repos_load_rel_path eq '.' ?
+                       $repos_load_rel_path :
+                       "$repos_base_url/$repos_load_rel_path";
+        my $to_url   = "$repos_base_url/$load_tag";
+
+        $message     = wrap("",
+                            "",
+                            "Tag $repos_load_abs_path as " .
+                            "$repos_tag_abs_path.\n");
+        read_from_process($svn, 'cp', @svn_use_repos_cmd_opts,
+                          '-m', $message, $from_url, $to_url);
+
+        # Now check out the tag and run a recursive diff between the
+        # original source directory and the tag for a consistency
+        # check.
+        my $checkout_dir_name = "my_tag_wc_named_$load_tag";
+        print "Checking out $to_url into $temp_dir/$checkout_dir_name\n";
+
+        chdir($temp_dir)
+          or die "$0: cannot chdir '$temp_dir': $!\n";
+
+        read_from_process($svn, 'checkout',
+                          @svn_use_repos_cmd_opts,
+                          $to_url, $checkout_dir_name);
+
+        chdir($checkout_dir_name)
+          or die "$0: cannot chdir '$checkout_dir_name': $!\n";
+
+        chdir($orig_cwd)
+          or die "$0: cannot chdir '$orig_cwd': $!\n";
+        read_from_process('diff', '-u', @diff_ignore_space_changes,
+                          '-x', '.svn',
+                          '-r', $load_dir, "$temp_dir/$checkout_dir_name");
+      }
+  }
+
+exit 0;
+
+sub usage
+{
+  warn "@_\n" if @_;
+  die "usage: $0 [options] svn_url svn_import_dir [dir_v1 [dir_v2 [..]]]\n",
+      "  svn_url        is the file:// or http:// URL of the svn repository\n",
+      "  svn_import_dir is the path relative to svn_url where to load dirs\n",
+      "  dir_v1 ..      list dirs to import otherwise read from stdin\n",
+      "options are\n",
+      "  -no_user_input don't ask yes/no questions and assume yes answer\n",
+      "  -no_auto_exe   don't set svn:executable for executable files\n",
+      "  -p filename    table listing properties to apply to matching files\n",
+      "  -svn_username  username to perform commits as\n",
+      "  -svn_password  password to supply to svn commit\n",
+      "  -t tag_dir     create a tag copy in tag_dir, relative to svn_url\n",
+      "  -v             increase program verbosity, multiple -v's allowed\n",
+      "  -wc path       use the already checked-out working copy at path\n",
+      "                 instead of checkout out a fresh working copy\n",
+      "  -glob_ignores  List of filename patterns to ignore (as in svn's\n",
+      "                 global-ignores config option)\n";
+}
+
+# Get the next directory to load, either from the command line or from
+# standard input.
+my $get_next_load_dir_init = 0;
+my @get_next_load_dirs;
+sub get_next_load_dir
+{
+  if (@ARGV)
+    {
+      unless ($get_next_load_dir_init)
+        {
+          $get_next_load_dir_init = 1;
+          @get_next_load_dirs     = @ARGV;
+        }
+      return shift @get_next_load_dirs;
+    }
+
+  if ($opt_verbose)
+    {
+      print "Waiting for next directory to import on standard input:\n";
+    }
+  my $line = <STDIN>;
+
+  print "\n" if $opt_verbose;
+
+  chomp $line;
+  if ($line =~ m|(\S+)\s+(\S+)|)
+    {
+      $line = $1;
+      set_svn_use_repos_cmd_opts($2, $opt_svn_password);
+    }
+  $line;
+}
+
+# This constant stores the commonly used string to indicate that a
+# subroutine has been passed an incorrect number of arguments.
+use vars qw($INCORRECT_NUMBER_OF_ARGS);
+$INCORRECT_NUMBER_OF_ARGS = "passed incorrect number of arguments.\n";
+
+# Creates a temporary file in the temporary directory and stores the
+# arguments in it for use by the svn --targets command line option.
+# If any part of the file creation failed, exit the program, as
+# there's no workaround.  Use a unique number as a counter to the
+# files.
+my $make_targets_file_counter;
+sub make_targets_file
+{
+  unless (@_)
+    {
+      confess "$0: make_targets_file $INCORRECT_NUMBER_OF_ARGS";
+    }
+
+  $make_targets_file_counter = 1 unless defined $make_targets_file_counter;
+
+  my $filename = sprintf "%s/targets.%05d",
+                 $temp_dir,
+                 $make_targets_file_counter;
+  ++$make_targets_file_counter;
+
+  open(TARGETS, ">$filename")
+    or die "$0: cannot open '$filename' for writing: $!\n";
+
+  foreach my $file (@_)
+    {
+      print TARGETS "$file\n";
+    }
+
+  close(TARGETS)
+    or die "$0: error in closing '$filename' for writing: $!\n";
+
+  $filename;
+}
+
+# Set the svn command line options that are used anytime svn connects
+# to the repository.
+sub set_svn_use_repos_cmd_opts
+{
+  unless (@_ == 2)
+    {
+      confess "$0: set_svn_use_repos_cmd_opts $INCORRECT_NUMBER_OF_ARGS";
+    }
+
+  my $username = shift;
+  my $password = shift;
+
+  @svn_use_repos_cmd_opts = ('--non-interactive');
+  if (defined $username and length $username)
+    {
+      push(@svn_use_repos_cmd_opts, '--username', $username);
+    }
+  if (defined $password)
+    {
+      push(@svn_use_repos_cmd_opts, '--password', $password);
+    }
+}
+
+sub get_tag_dir
+{
+  unless (@_ == 1)
+    {
+      confess "$0: get_tag_dir $INCORRECT_NUMBER_OF_ARGS";
+    }
+
+  my $load_dir = shift;
+
+  # Take the tag relative directory, search for pairs of
+  # REGEX_SEP_CHAR's and use the regular expression inside the pair to
+  # put in the tag directory name.
+  my $tag_location = $opt_import_tag_location;
+  my $load_tag     = '';
+  while ((my $i = index($tag_location, $REGEX_SEP_CHAR)) >= 0)
+    {
+      $load_tag .= substr($tag_location, 0, $i, '');
+      substr($tag_location, 0, 1, '');
+      my $j = index($tag_location, $REGEX_SEP_CHAR);
+      if ($j < 0)
+        {
+          die "$0: -t value '$opt_import_tag_location' does not have ",
+              "matching $REGEX_SEP_CHAR.\n";
+        }
+      my $regex = substr($tag_location, 0, $j, '');
+      $regex = "($regex)" unless ($regex =~ /\(.+\)/);
+      substr($tag_location, 0, 1, '');
+      my @results = $load_dir =~ m/$regex/;
+      $load_tag .= join('', @results);
+    }
+  $load_tag .= $tag_location;
+
+  $load_tag;
+}
+
+# Return a two element array.  The first element is a single character
+# that represents the type of object the path points to.  The second
+# is a boolean (1 for true, '' for false) if the path points to a file
+# and if the file is executable.
+sub file_info
+{
+  lstat(shift) or return ('0', '');
+  -b _ and return ('b', '');
+  -c _ and return ('c', '');
+  -d _ and return ('d', '');
+  -f _ and return ('f', -x _);
+  -l _ and return ('l', '');
+  -p _ and return ('p', '');
+  -S _ and return ('S', '');
+  return '?';
+}
+
+# Start a child process safely without using /bin/sh.
+sub safe_read_from_pipe
+{
+  unless (@_)
+    {
+      croak "$0: safe_read_from_pipe $INCORRECT_NUMBER_OF_ARGS";
+    }
+
+  my $openfork_available = "MSWin32" ne $OSNAME;
+  if ($openfork_available)
+    {
+      print "Running @_\n";
+      my $pid = open(SAFE_READ, "-|");
+      unless (defined $pid)
+        {
+          die "$0: cannot fork: $!\n";
+        }
+      unless ($pid)
+        {
+          # child
+          open(STDERR, ">&STDOUT")
+            or die "$0: cannot dup STDOUT: $!\n";
+          exec(@_)
+            or die "$0: cannot exec '@_': $!\n";
+        }
+    }
+  else
+    {
+      # Redirect the comment into a temp file and use that to work around
+      # Windoze's (non-)handling of multi-line commands.
+      my @commandline = ();
+      my $command;
+      my $comment;
+        
+      while ($command = shift)
+        {
+          if ("-m" eq $command)
+            {
+              my $comment = shift;
+              my ($handle, $tmpfile) = tempfile(DIR => $temp_dir);
+              print $handle $comment;
+              close($handle);
+                
+              push(@commandline, "--file");
+              push(@commandline, $tmpfile);
+            }
+          else
+            {
+              # Munge the command to protect it from the command line
+              $command =~ s/\"/\\\"/g;
+              if ($command =~ m"\s") { $command = "\"$command\""; }
+              if ($command eq "") { $command = "\"\""; }
+              if ($command =~ m"\n")
+                {
+                  warn "$0: carriage return detected in command - may not work\n";
+                }
+              push(@commandline, $command);
+            }
+        }
+        
+      print "Running @commandline\n";
+      if ( $comment ) { print $comment; }
+        
+      # Now do the pipe.
+      open(SAFE_READ, "@commandline |")
+        or die "$0: cannot pipe to command: $!\n";
+    }
+    
+  # parent
+  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;
+    }
+}
+
+# Use safe_read_from_pipe to start a child process safely and exit the
+# script if the child failed for whatever reason.
+sub read_from_process
+{
+  unless (@_)
+    {
+      croak "$0: read_from_process $INCORRECT_NUMBER_OF_ARGS";
+    }
+  my ($status, @output) = &safe_read_from_pipe(@_);
+  if ($status)
+    {
+      print STDERR "$0: @_ failed with this output:\n", join("\n", @output),
+                   "\n";
+      unless ($opt_no_user_input)
+        {
+          print STDERR
+            "Press return to quit and clean up svn working directory: ";
+          <STDIN>;
+        }
+      exit 1;
+    }
+  else
+    {
+      return @output;
+    }
+}
+
+# Get a list of all the files and directories in the specified
+# directory, the type of file and a digest hash of file types.
+sub recursive_ls_and_hash
+{
+  unless (@_ == 1)
+    {
+      croak "$0: recursive_ls_and_hash $INCORRECT_NUMBER_OF_ARGS";
+    }
+
+  # This is the directory to change into.
+  my $dir = shift;
+
+  # Get the current directory so that the script can change into the
+  # current working directory after changing into the specified
+  # directory.
+  my $return_cwd = cwd;
+
+  chdir($dir)
+    or die "$0: cannot chdir '$dir': $!\n";
+
+  my %files;
+
+  my $wanted = sub
+    {
+      s#^\./##;
+      return if $_ eq '.';
+      my ($file_type) = &file_info($_);
+      my $file_digest;
+      if ($file_type eq 'f' or ($file_type eq 'l' and stat($_) and -f _))
+        {
+          $file_digest = &digest_hash_file($_);
+        }
+      $files{$_} = {type   => $file_type,
+                    digest => $file_digest};
+    };
+  find({no_chdir   => 1,
+        preprocess => sub
+	  {
+            grep
+              {
+                my $ok=1;
+                foreach my $x (@glob_ignores)
+                  {
+                    if ( $_ =~ /$x/ ) {$ok=0;last;}
+                  }
+                $ok
+              } @_
+          },
+        wanted     => $wanted
+       }, '.');
+
+  chdir($return_cwd)
+    or die "$0: cannot chdir '$return_cwd': $!\n";
+
+  %files;
+}
+
+# Given a list of files and directories which have been renamed but
+# not commtited, commit them with a proper log message.
+sub commit_renames
+{
+  unless (@_ == 4)
+    {
+      croak "$0: commit_renames $INCORRECT_NUMBER_OF_ARGS";
+    }
+
+  my $load_dir          = shift;
+  my $renamed_filenames = shift;
+  my $rename_from_files = shift;
+  my $rename_to_files   = shift;
+
+  my $number_renames    = @$renamed_filenames/2;
+
+  my $message = "To prepare to load $load_dir into $repos_load_abs_path, " .
+                "perform $number_renames rename" .
+                ($number_renames > 1 ? "s" : "") . ".\n";
+
+  # Text::Wrap::wrap appears to replace multiple consecutive \n's with
+  # one \n, so wrap the text and then append the second \n.
+  $message  = wrap("", "", $message) . "\n";
+  while (@$renamed_filenames)
+    {
+      my $from  = "$repos_load_abs_path/" . shift @$renamed_filenames;
+      my $to    = "$repos_load_abs_path/" . shift @$renamed_filenames;
+      $message .= wrap("", "  ", "* $to: Renamed from $from.\n");
+    }
+
+  # Change to the top of the working copy so that any
+  # directories will also be updated.
+  my $cwd = cwd;
+  chdir($wc_import_dir_cwd)
+    or die "$0: cannot chdir '$wc_import_dir_cwd': $!\n";
+  read_from_process($svn, 'commit', @svn_use_repos_cmd_opts, '-m', $message);
+  read_from_process($svn, 'update', @svn_use_repos_cmd_opts);
+  chdir($cwd)
+    or die "$0: cannot chdir '$cwd': $!\n";
+
+  # Some versions of subversion have a bug where renamed files
+  # or directories are not deleted after a commit, so do that
+  # here.
+  my @del_files = sort {length($b) <=> length($a) || $a cmp $b }
+                  keys %$rename_from_files;
+  rmtree(\@del_files, 1, 0);
+
+  # Empty the list of old and new renamed names.
+  undef %$rename_from_files;
+  undef %$rename_to_files;
+}
+
+# Take a one file or directory and see if its name is equal to a
+# second or is contained in the second if the second file's file type
+# is a directory.
+sub contained_in
+{
+  unless (@_ == 3)
+    {
+      croak "$0: contain_in $INCORRECT_NUMBER_OF_ARGS";
+    }
+
+  my $contained      = shift;
+  my $container      = shift;
+  my $container_type = shift;
+
+  if ($container eq $contained)
+    {
+      return 1;
+    }
+
+  if ($container_type eq 'd')
+    {
+      my $dirname        = "$container/";
+      my $dirname_length = length($dirname);
+
+      if ($dirname_length <= length($contained) and
+          $dirname eq substr($contained, 0, $dirname_length))
+        {
+          return 1;
+        }
+    }
+
+  return 0;
+}
+
+# Take an array reference containing a list of files and directories
+# and take a hash reference and remove from the array reference any
+# files and directories and the files the directory contains listed in
+# the hash.
+sub filter_renamed_files
+{
+  unless (@_ == 2)
+    {
+      croak "$0: filter_renamed_files $INCORRECT_NUMBER_OF_ARGS";
+    }
+
+  my $array_ref = shift;
+  my $hash_ref  = shift;
+
+  foreach my $remove_filename (keys %$hash_ref)
+    {
+      my $remove_file_type = $hash_ref->{$remove_filename}{type};
+      for (my $i=0; $i<@$array_ref;)
+        {
+          if (contained_in($array_ref->[$i],
+                           $remove_filename,
+                           $remove_file_type))
+            {
+              splice(@$array_ref, $i, 1);
+              next;
+            }
+          ++$i;
+        }
+    }
+}
+
+# Get a digest hash of the specified filename.
+sub digest_hash_file
+{
+  unless (@_ == 1)
+    {
+      croak "$0: digest_hash_file $INCORRECT_NUMBER_OF_ARGS";
+    }
+
+  my $filename = shift;
+
+  my $ctx = Digest::MD5->new;
+  if (open(READ, $filename))
+    {
+      binmode READ;
+      $ctx->addfile(*READ);
+      close(READ);
+    }
+  else
+    {
+      die "$0: cannot open '$filename' for reading: $!\n";
+    }
+  $ctx->digest;
+}
+
+# Read standard input until a line contains the required input or an
+# empty line to signify the default answer.
+sub get_answer
+{
+  unless (@_ == 3)
+    {
+      croak "$0: get_answer $INCORRECT_NUMBER_OF_ARGS";
+    }
+
+  my $message = shift;
+  my $answers = shift;
+  my $def_ans = shift;
+
+  return $def_ans if $opt_no_user_input;
+
+  my $char;
+  do
+    {
+      print $message;
+      $char = '';
+      my $line = <STDIN>;
+      if (defined $line and length $line)
+        {
+          $char = substr($line, 0, 1);
+          $char = '' if $char eq "\n";
+        }
+    } until $char eq '' or $answers =~ /$char/ig;
+
+  return $def_ans if $char eq '';
+  return pos($answers) - 1;
+}
+
+# Determine the native end of line on this system by writing a \n in
+# non-binary mode to an empty file and reading the same file back in
+# binary mode.
+sub determine_native_eol
+{
+  my $filename = "$temp_dir/svn_load_dirs_eol_test.$$";
+  if (-e $filename)
+    {
+      unlink($filename)
+        or die "$0: cannot unlink '$filename': $!\n";
+    }
+
+  # Write the \n in non-binary mode.
+  open(NL_TEST, ">$filename")
+    or die "$0: cannot open '$filename' for writing: $!\n";
+  print NL_TEST "\n";
+  close(NL_TEST)
+    or die "$0: error in closing '$filename' for writing: $!\n";
+
+  # Read the \n in binary mode.
+  open(NL_TEST, $filename)
+    or die "$0: cannot open '$filename' for reading: $!\n";
+  binmode NL_TEST;
+  local $/;
+  undef $/;
+  my $eol = <NL_TEST>;
+  close(NL_TEST)
+    or die "$0: cannot close '$filename' for reading: $!\n";
+  unlink($filename)
+    or die "$0: cannot unlink '$filename': $!\n";
+
+  my $eol_length = length($eol);
+  unless ($eol_length)
+    {
+      die "$0: native eol length on this system is 0.\n";
+    }
+
+  print "Native EOL on this system is ";
+  for (my $i=0; $i<$eol_length; ++$i)
+    {
+      printf "\\%03o", ord(substr($eol, $i, 1));
+    }
+  print ".\n\n";
+
+  $eol;
+}
+
+# Take a filename, open the file and replace all CR, CRLF and LF's
+# with the native end of line style for this system.
+sub convert_file_to_native_eol
+{
+  unless (@_ == 1)
+    {
+      croak "$0: convert_file_to_native_eol $INCORRECT_NUMBER_OF_ARGS";
+    }
+
+  my $filename = shift;
+  open(FILE, $filename)
+    or die "$0: cannot open '$filename' for reading: $!\n";
+  binmode FILE;
+  local $/;
+  undef $/;
+  my $in = <FILE>;
+  close(FILE)
+    or die "$0: error in closing '$filename' for reading: $!\n";
+  my $out = '';
+
+  # Go through the file and transform it byte by byte.
+  my $i = 0;
+  while ($i < length($in))
+    {
+      my $cc = substr($in, $i, 2);
+      if ($cc eq "\015\012")
+        {
+          $out .= $native_eol;
+          $i += 2;
+          next;
+        }
+
+      my $c = substr($cc, 0, 1);
+      if ($c eq "\012" or $c eq "\015")
+        {
+          $out .= $native_eol;
+        }
+      else
+        {
+          $out .= $c;
+        }
+      ++$i;
+    }
+
+  return 0 if $in eq $out;
+
+  my $tmp_filename = ".svn/tmp/svn_load_dirs.$$";
+  open(FILE, ">$tmp_filename")
+    or die "$0: cannot open '$tmp_filename' for writing: $!\n";
+  binmode FILE;
+  print FILE $out;
+  close(FILE)
+    or die "$0: cannot close '$tmp_filename' for writing: $!\n";
+  rename($tmp_filename, $filename)
+    or die "$0: cannot rename '$tmp_filename' to '$filename': $!\n";
+
+  return 1;
+}
+
+# Split the input line into words taking into account that single or
+# double quotes may define a single word with whitespace in it.
+sub split_line
+{
+  unless (@_ == 1)
+    {
+      croak "$0: split_line $INCORRECT_NUMBER_OF_ARGS";
+    }
+
+  my $line = shift;
+
+  # Strip leading whitespace.  Do not strip trailing whitespace which
+  # may be part of quoted text that was never closed.
+  $line =~ s/^\s+//;
+
+  my $line_length  = length $line;
+  my @words        = ();
+  my $current_word = '';
+  my $in_quote     = '';
+  my $in_protect   = '';
+  my $in_space     = '';
+  my $i            = 0;
+
+  while ($i < $line_length)
+    {
+      my $c = substr($line, $i, 1);
+      ++$i;
+
+      if ($in_protect)
+        {
+          if ($c eq $in_quote)
+            {
+              $current_word .= $c;
+            }
+          elsif ($c eq '"' or $c eq "'")
+            {
+              $current_word .= $c;
+            }
+          else
+            {
+              $current_word .= "$in_protect$c";
+            }
+          $in_protect = '';
+        }
+      elsif ($c eq '\\')
+        {
+          $in_protect = $c;
+        }
+      elsif ($in_quote)
+        {
+          if ($c eq $in_quote)
+            {
+              $in_quote = '';
+            }
+          else
+            {
+              $current_word .= $c;
+            }
+        }
+      elsif ($c eq '"' or $c eq "'")
+        {
+          $in_quote = $c;
+        }
+      elsif ($c =~ m/^\s$/)
+        {
+          unless ($in_space)
+            {
+              push(@words, $current_word);
+              $current_word = '';
+            }
+        }
+      else
+        {
+          $current_word .= $c;
+        }
+
+      $in_space = $c =~ m/^\s$/;
+    }
+
+  # Handle any leftovers.
+  $current_word .= $in_protect if $in_protect;
+  push(@words, $current_word) if length $current_word;
+
+  @words;
+}
+
+# This package exists just to delete the temporary directory.
+package Temp::Delete;
+
+sub new
+{
+  bless {}, shift;
+}
+
+sub DESTROY
+{
+  print "Cleaning up $temp_dir\n";
+  File::Path::rmtree([$temp_dir], 0, 0);
+}