From: Tobias DiPasquale <anany@...>
Date: 2001-12-09T03:54:00+09:00
Subject: [ruby-talk:27964] Re: stack overflow (was Ruby IDE?? What about using Eclipse??)

I forgot to mention that this was on i686-linux version of Ruby 1.6.5. 
Thanks

Tobias DiPasquale wrote:

> [ruby-talk:27963] stack overflow (was Ruby IDE?? What about using Eclipse??)
> Hi all,
> 
> 	Hearing all about this Eclipse project made me go and pull it down, until 
> I realized that I had it already. So I unzipped it, and like a few 
> select annoying packages that I get from time to time, it installed 
> everything world-writeable. I was so mad that I wrote this Ruby script 
> (below) to change all the permissions back to 755/644 depending on the 
> file type. However, the following script always ends up erroring out 
> (error below). Is it just because the directory is too deep, or is there 
> an error in my recursion? Any help would be appreciated. Thanks in advance!
> 
> ======================= Code ========================
> #!/usr/bin/env ruby
> 
> def fixPermissions(filename)
>    if FileTest.directory?(filename)
>      File.chmod(0755, filename)
>      printf "%s: changed to 0755\n", filename
>    else
>      if filename =~ /.sh$/ || filename =~ /.so$/
>        File.chmod(0755, filename)
>        printf "%s: changed to 0755\n", filename
>      else
>        File.chmod(0644, filename)
>        printf "%s: changed to 0644\n", filename
>      end
>    end
> end
> 
> def traverseDirectory(files)
>    files.each { |aFile|
>      if FileTest.directory?(aFile) && (aFile != "." || aFile != "..")
>        traverseDirectory(Dir.entries(aFile))
>        puts "Entering directory " + aFile
>      else
>        fixPermissions(aFile)
>      end
>    }
> end
> 
> if __FILE__ == $0
>    if ARGV.size != 1
>      puts "Usage: permfix <directory>"
>      exit
>    end
> 
>    if !FileTest.exist? ARGV[0]
>      puts "Error: directory " + ARGV[0] + " does not exist!"
>      exit
>    end
> 
>    if !FileTest.directory? ARGV[0]
>      puts "Error: " + ARGV[0] + " is not a directory!"
>      exit
>    end
> 
>    traverseDirectory Dir.entries(ARGV[0])
> end
> 
> ========================= Error =========================
> [root@localhost home]# ./permfix eclipse
> ./permfix:20:in `traverseDirectory': stack level too deep (SystemStackError)
>          from ./permfix:19:in `each'
>          from ./permfix:19:in `traverseDirectory'
>          from ./permfix:21:in `traverseDirectory'
>          from ./permfix:19:in `each'
>          from ./permfix:19:in `traverseDirectory'
>          from ./permfix:21:in `traverseDirectory'
>          from ./permfix:19:in `each'
>          from ./permfix:19:in `traverseDirectory'
>           ... 3168 levels...
>          from ./permfix:21:in `traverseDirectory'
>          from ./permfix:19:in `each'
>          from ./permfix:19:in `traverseDirectory'
>          from ./permfix:45
> [root@localhost home]#
> 
> 



-- 
Tobias DiPasquale
Solaris System Administrator
Electrical and Computer Engineering Dept.
Villanova University
mailto: anany@ece.vill.edu
tel: 610-519-5109