#! /usr/bin/perl -w

my $opts = {};
my $arg;
while($arg = shift @ARGV)
{
    for($arg)
    {
	/^-?-(root)$/     and do { $$opts{$1} = shift @ARGV; last; };
	/^-?-(force)$/    and do { $$opts{$1} = 1;           last; };
	/^-?-(debug)$/    and do { $$opts{$1} = 1;           last; };
	/^-?-(progress)$/ and do { $$opts{$1} = 1;           last; };
	/^-?-(dry-run)$/  and do { $$opts{$1} = 1;           last; };
	warn "update_prebinding: warning: unknown option $arg\n";
    }
}

if($$opts{root})
{
    # must begin with "/"
    # must exist
    $ENV{DYLD_ROOT_PATH} = $$opts{root};
}
if($$opts{force})
{
    $ENV{DYLD_IGNORE_PREBINDING} = 'all';
}
if($$opts{debug})
{
    $ENV{DYLD_PREBIND_DEBUG} = '';
}
my $flags = 0b00000000;

if($$opts{'dry-run'})
{
    $flags |= 0b00000001;
}
if($$opts{'progress'})
{
    $flags |= 0b00000010;
}

undef $/; # read the entire file all at once
my $file = '/var/db/dyld/update-prebinding-paths.txt';
open(PATHS, "<$file") or die("$file: $!\n");
my $filestr = <PATHS>;
close(PATHS) or die("$file: $!\n");
$filestr =~ s/\s*\#.*?\n/\n/g; # remove all comments
$filestr =~ s/\n\s*\n/\n/g; # remove all blank lines
$filestr =~ s/^\s*\n//g; # remove all blank lines
$filestr =~ s/\n\s*$//g; # remove all blank lines

my @paths = split /\n/, $filestr;
push @paths, sprintf("%016b", $flags);
my $result = system('/usr/bin/update_prebinding_core', @paths);
if(0 == $result)
{
    # note: Radar 3963439
    system('/bin/sh', '-c', '/bin/rm -f /var/vm/app_profile/*{_names,_data}');
}
exit($result);