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Re: File test [message #4444 is a reply to message #4430]

Tue, 30 May 1995 00:00

hahn
Messages: 108
Registered: November 1993

Senior Member

In article <1995May30.083524.18717@newsserver.rrzn.uni-hannover.de> knipp@ipi.uni-hannover.de (K Knipp) writes:

> found = findfile(FILENAME) ne "" ; FILENAME WITHOUT WILDCARD
> ; found will either be 0 or 1

Although this works I recommend to use findfile with the optional parameter
count and check this value: Findfile returns a string array with one element
per file or directory. So, if FILENAME is ambigous, you cannot compare it to
a null string.

BTW: If you enter wild card characters as argument the result returned depends
on the operating system. Using findfile in IDL for Windows the result is:

IDL> fl = findfile('d:\idl\*.*', count=nd)
IDL>print, nd
25
IDL> print, fl
d:\idl\.\
d:\idl\..\
d:\idl\HELP\
d:\idl\MAPS\
[ lines deleted]
d:\idl\EXPORT.H
d:\idl\DOSPRMPT.PIF
[remainder deleted]

While running under OSF/1 you get uxlis = findfile('$IDL_DIR/*', count=cn)
260 files and uxlis contains
/afs/software/idl/axp361/Idl
/afs/software/idl/axp361/README
/afs/software/idl/axp361/RELEASE_LEVEL
/afs/software/idl/axp361/colors1.tbl
/afs/software/idl/axp361/envi_setup
/afs/software/idl/axp361/envi_setup.ksh
[remainder deleted]

As you see all subdirectories are traversed, similar to the Unix find
command.

Norbert Hahn

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[Message index]

		Re: File test By: knipp on Wed, 31 May 1995 00:00
		Re: File test By: sjt on Wed, 31 May 1995 00:00
		Re: File test By: hahn on Tue, 30 May 1995 00:00
		Re: File test By: knipp on Tue, 30 May 1995 00:00

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