[Lazarus] Function to get the mimetype from a file extension

[michael.vancanneyt at wisa.be]

On Wed, 9 May 2012, Graeme Geldenhuys wrote:

> On 9 May 2012 14:51,  <michael.vancanneyt at wisa.be> wrote:
>>
>> It is used by fcl-web. On linux, it loads /etc/mime.types.
>
> I don't know the exact format of that file, I guessed "mime type name"
> then "file extension list"

Correct.

>
> But on my Ubuntu 10.04 that file has many lines only showing the "mime
> type name" with no extension mentioned. So how reliable is that file
> really?
>

Based on my personal experience: very.
I've had this file in use since 18 years at least, since the first NCSA
webserver installations.

> I know Linux (at least Gnome) uses magic numbers (first 2-4 bytes of a
> file) to detect the real file type without looking at the file
> extension.

A webserver does not do that. It uses the mime file.

the 'file' command looks at the magic numbers, but for example KDE looks at
the extension.

Michael.