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Chapter 6. Handling directories

them in directory listings. The auto-indexing module provides a slew of commands

for this purpose. The trick to producing self-consistent indexes is to use as few as

possible. We will set up distinct icons for the following entries.

Categories with distinct icons

• HTML web pages

• Plain text pages

• Any other “text” format

• Any image format

• Any audio format

• Any movie format

• PostScript

• Portable Document Format (PDF)

• Any other ﬁle content type

• Subdirectories

• The parent directory

The command that associates an icon with a MIME content type is AddIconByType.

However, we will also specify the ALT text for text-based browsers with the analo-

gous AddAltByType command.

AddIconByType /icons/layout.gif text/html

AddIconByType /icons/text.gif text/plain

AddIconByType /icons/generic.gif text/*

AddIconByType /icons/image2.gif image/*

AddIconByType /icons/sound1.gif audio/*

AddIconByType /icons/movie.gif video/*

AddIconByType /icons/ps.gif application/postscript

AddIconByType /icons/pdf.gif application/pdf

DefaultIcon /icons/ball.gray.gif

AddAltByType "HTML file" text/html

AddAltByType "Plain text" text/plain

AddAltByType "Text" text/*

AddAltByType "Static image" image/*

AddAltByType "Audio" audio/*

AddAltByType "Video" video/*

AddAltByType "PostScript" application/postscript

AddAltByType "PDF" application/pdf

Figure 6-24. Specifying icons for MIME content types

Note: Normally I would recommend using the PNG icons rather than the GIF icons to

avoid possible future patent problems with Unisys. However, whoever did the conversion

got the background transparency wrong and you should use the GIF icons for the time

being until the PNGs are ﬁxed.

We still have a problem with directories. There is no MIME content type for a di-

rectory so we must use other facilities. The following is a ﬁlthy hack introduced by

Apache version 1 and preserved into version 2.

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