Chris,
When you import a file, you always want to do something with its
contents. Just check to see if the text contents fits the
destination. If not, it might be a binary file and you may need to
handle it differently.
There is another way. You could do a guess about the percentage of
spaces, returns, and alphanumerical characters in a normal text file
(nearly 100%) and in a binary file (significantly less). In those
cases that the actual percentage is lower than some treshold value,
assume it is a binary file. If the actual percentage is higher,
assume it is a text file. If the actual percentage is approximately
equal to the treshold value, ask the user.
You can store a copy of (a part of) the data in another variable, use
replaceText to remove all non-alfanumerical characters and calculate
the percentage. If you have a really large file, you don't need to
analyse the entire file.
Best,
Mark
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Op 11-dec-2006, om 23:09 heeft Chris Sheffield het volgende geschreven:
Does anyone have a sure fire way to determine if a file is binary
or text?
I have need to create an import utility that will import data from
a text file (csv, tab-delimited, etc) into a database, but I'd like
to check the file before doing anything else just to make sure it
is in fact text and not binary.
Any thoughts?
Thanks,
Chris
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