As others have said, it's a problem with the shell and not your program. To fix this in the shell, you can use GNU find and xargs: 
  find . -type f -print0 |xargs -0 /your/script
It uses NULLs to terminate filenames instead of spaces.

Maybe not exactly what you want, but may help.

In reply to Re: filenames with spaces causing problems by sgifford
in thread filenames with spaces causing problems by drake50

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