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-rwxr-xr-xopenssl/util/mklink.pl75
1 files changed, 75 insertions, 0 deletions
diff --git a/openssl/util/mklink.pl b/openssl/util/mklink.pl
new file mode 100755
index 0000000..a937606
--- /dev/null
+++ b/openssl/util/mklink.pl
@@ -0,0 +1,75 @@
+#!/usr/local/bin/perl
+
+# mklink.pl
+
+# The first command line argument is a non-empty relative path
+# specifying the "from" directory.
+# Each other argument is a file name not containing / and
+# names a file in the current directory.
+#
+# For each of these files, we create in the "from" directory a link
+# of the same name pointing to the local file.
+#
+# We assume that the directory structure is a tree, i.e. that it does
+# not contain symbolic links and that the parent of / is never referenced.
+# Apart from this, this script should be able to handle even the most
+# pathological cases.
+
+use Cwd;
+
+my $from = shift;
+my @files = @ARGV;
+
+my @from_path = split(/[\\\/]/, $from);
+my $pwd = getcwd();
+chomp($pwd);
+my @pwd_path = split(/[\\\/]/, $pwd);
+
+my @to_path = ();
+
+my $dirname;
+foreach $dirname (@from_path) {
+
+ # In this loop, @to_path always is a relative path from
+ # @pwd_path (interpreted is an absolute path) to the original pwd.
+
+ # At the end, @from_path (as a relative path from the original pwd)
+ # designates the same directory as the absolute path @pwd_path,
+ # which means that @to_path then is a path from there to the original pwd.
+
+ next if ($dirname eq "" || $dirname eq ".");
+
+ if ($dirname eq "..") {
+ @to_path = (pop(@pwd_path), @to_path);
+ } else {
+ @to_path = ("..", @to_path);
+ push(@pwd_path, $dirname);
+ }
+}
+
+my $to = join('/', @to_path);
+
+my $file;
+$symlink_exists=eval {symlink("",""); 1};
+if ($^O eq "msys") { $symlink_exists=0 };
+foreach $file (@files) {
+ my $err = "";
+ if ($symlink_exists) {
+ if (!-l "$from/$file") {
+ unlink "$from/$file";
+ symlink("$to/$file", "$from/$file") or $err = " [$!]";
+ }
+ } elsif (-d "$from" && (!-f "$from/$file" || ((stat("$file"))[9] > (stat("$from/$file"))[9]))) {
+ unlink "$from/$file";
+ open (OLD, "<$file") or die "Can't open $file: $!";
+ open (NEW, ">$from/$file") or die "Can't open $from/$file: $!";
+ binmode(OLD);
+ binmode(NEW);
+ while (<OLD>) {
+ print NEW $_;
+ }
+ close (OLD) or die "Can't close $file: $!";
+ close (NEW) or die "Can't close $from/$file: $!";
+ }
+ print $file . " => $from/$file$err\n";
+}