NetCDF UTI's on Mac OS X

[Johan Kool <johankool@xxxxxxxxx>]

This is a proposal for the UTI's (Uniform Type Identifier) to be used  
by applications supporting NetCDF on Mac OS X for typing files.

More information on this topic is available on:
<http://developer.apple.com/documentation/Carbon/Conceptual/ 
understanding_utis/understand_utis_intro/chapter_1_section_1.html>

It's practically a reversed dns "file-extension" for a fileformat. It  
is not visible to the enduser but used by apps to identify files it  
can open/edit.

For a general NetCDF file I think it would be something like this in  
an Info.plist:

<key>LSItemContentTypes</key>
<array>
    <string>edu.ucar.unidata.netcdf</string>
</array>
<key>UTImportedTypeDeclarations</key>
<array>
    <dict>
        <key>UTTypeIdentifier</key>
        <string>edu.ucar.unidata.netcdf</string>
        <key>UTTypeReferenceURL</key>
        <string>http://www.unidata.ucar.edu/software/netcdf/</string>
        <key>UTTypeDescription</key>
        <string>NetCDF File</string>
        <key>UTTypeIconFile</key>
        <string>netcdf_document</string>
        <key>UTTypeConformsTo</key>
        <array>
            <string>public.data</string>
            <string>public.content</string>
        </array>
        <key>UTTypeTagSpecification</key>
        <dict>
            <key>public.filename-extension</key>
            <array>
                <string>cdf</string>
                <string>nc</string>
           </array>
            <key>public.mime-type</key>
            <string>application/x-netcdf</string>
        </dict>
    </dict>
</array>

For NetCDF files containing data stored in a specific way, such as MS  
data in the ANDI specification, it would be:

<key>LSItemContentTypes</key>
<array>
    <string>edu.ucar.unidata.netcdf. andi </string>
</array>
<key>UTImportedTypeDeclarations</key>
<array>
    <dict>
        <key>UTTypeIdentifier</key>
        <string>edu.ucar.unidata.netcdf. andi </string>
        <key>UTTypeReferenceURL</key>
        <string>http://pubs.acs.org/hotartcl/tcaw/98/may/stan.html</ 
string>
        <key>UTTypeDescription</key>
        <string>NetCDF/ANDI File</string>
        <key>UTTypeIconFile</key>
        <string>netcdf_document</string>
        <key>UTTypeConformsTo</key>
        <array>
            <string>edu.ucar.unidata.netcdf</string>
            <string>public.data</string>
            <string>public.content</string>
        </array>
        <key>UTTypeTagSpecification</key>
        <dict>
            <key>public.filename-extension</key>
            <array>
                <string>cdf</string>
                <string>nc</string>
                <string>andi</string>
                <string>aia</string>
           </array>
            <key>public.mime-type</key>
            <string>application/x-netcdf-andi</string>
        </dict>
    </dict>
</array>

UTTypeIconFile entry is dependent on the name of the icon in the  
application bundle so not very relevant here. I am not exactly aware  
if there are any specific MIME types already is common use, if so,  
I'd be happy to hear.

Any objections against the UTTypeIdentifier's proposed?

Thanks,

Johan Kool

See also: <http://www.johankool.nl/mac-articles/netcdf-utis-on-mac-os-x>

---
  http://www.johankool.nl/



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