I have a requirment to quickly check to see if a document uploaded to the server is an XML file. It should be, but you never know....

I would like my script (built round CGI) to give the user an error if the file isn't a well formed XML one. I've checked that the file is more than zero bytes already.

I don't want to check for validity (I can't anyway), I just want to quickly be able to emit an error message to the user's browser, and die.

I assume that if I simply open up the file in an XML parser, and it doesn't die when I parse it, then it's XML and well-formed, which should be enough to pass the file on to another process.

Q1 Is this a sensible approach?

Q2 If it is, which module is fastest and simplest? I don't plan to actually do anything with the file. Just do a HTTP POST to another server.

As ever, many thanks in advance.

In reply to Is a file XML? by ajt

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