From: Yang Bob <bob.yang.dev@...>
Date: 2007-08-01T00:21:30+09:00
Subject: Re: How to substitute a string with different size

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Hi Li,

What do you mean 'unpreditable result'? Do you mean that the size of 'str'
object is not correct?


2007/7/31, Li Chen <chen_li3@yahoo.com>:
>
> Hi all,
>
> I deal with a mixture of text and binary file. I want to search a
> pattern in the string and replace it with a new pattern, then write to a
> new file. I use the following script(only part of the script)
>
> str.gsub!(/old_pattern/,"new_pattern")
> file.seek(-str.length,IO::SEEK_CUR)
> file.print str
>
> It works fine if the both old_pattern and new_pattern are the same size.
> But it will produce unpreditable result if the sizes are different. I
> wonder if any one out there knows how to explain it and provide a Ruby
> way solution.
>
> Thanks,
>
> Li
> --
> Posted via http://www.ruby-forum.com/.
>
>

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