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RE: Directory listings with pattern (was RE: How to q uery for a long filename using IRP_M

OSR_Community_UserOSR_Community_User Member Posts: 110,217
You caught me, Dan. Absolutely right. Zero or more. I'm assuming there is
a brilliant discussion of this somewhere in the IFS Kit documentation, of
course (right Diane? ;-) )

Regards,

Tony

Tony Mason
Consulting Partner
OSR Open Systems Resources, Inc.
http://www.osr.com


-----Original Message-----
From: Dan Kyler [mailto:[email protected]]
Sent: Tuesday, November 19, 2002 6:48 PM
To: File Systems Developers
Subject: [ntfsd] RE: Directory listings with pattern (was RE: How to query
for a long filename using IRP_MJ_DIRECTO RY_CONTROL/IRP_MN_QUERY_DIR
ECTORY?)

Hi Tony,

> * = "match one or more characters"

I believe that should read "zero or more".

- Dan.

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Tony Mason
Sent: Tuesday, November 19, 2002 12:47 PM
To: File Systems Developers
Subject: [ntfsd] RE: Directory listings with pattern (was RE: How to
query for a long filename using IRP_MJ_DIRECTO
RY_CONTROL/IRP_MN_QUERY_DIR ECTORY?)


There are five wildcard characters in the Windows pattern matching
syntax (that is the syntax implemented by FsRtlIsNameInExpression, that
venerable and nearly inscrutable function.)

* = "match one or more characters"
? = "match one character"
< = "match one or more characters using MS-DOS semantics"
> = "match one character using MS-DOS semantics"
" = "match dot using MS-DOS semantics"

Thus, the last three are for MS-DOS compatibility, which restricts the
character set that can match. For example, spaces are allowed in MS-DOS
names, but not before or after the dot. These MS-DOS patterns match
those semantics.

For building your own strings, I highly recommend sticking with the
Windows semantics, not the MS-DOS semantics.

Regards,

Tony

Tony Mason
Consulting Partner
OSR Open Systems Resources, Inc.
http://www.osr.com


-----Original Message-----
From: Tobias [mailto:[email protected]]
Sent: Tuesday, November 19, 2002 12:14 PM
To: File Systems Developers
Subject: [ntfsd] Directory listings with pattern (was RE: How to query
for a long filename using IRP_MJ_DIRECTO
RY_CONTROL/IRP_MN_QUERY_DIRECTORY?)

Don't wanna bother, but for (3) I have some additional questions.

The format of "*.doc" is really easy to use (especially when building
directory information buffers), but how about those special wildcards
like "\"" or "<" ( C notation, it's hard to quote a " :) ) ? Is there an
overview of all options for directory wildcards and their meaning
somewhere? Or can one simply use * for any illegal non-zero character?

Regards & TIA,
Tobias


----- Original Message -----
From: "Tony Mason" <[email protected]>
To: "File Systems Developers" <[email protected]>
Sent: Tuesday, November 19, 2002 2:59 PM
Subject: [ntfsd] RE: How to query for a long filename using
IRP_MJ_DIRECTO RY_CONTROL/IRP_MN_QUERY_DIRECTORY?

> (3) This can either be a file name you wish to find (not a path, just
> a
> filename) or a regular expression (e.g., "*.doc" to find all of the
DOC
> files within the directory.) That name will be used to match the
short OR
> long file name.



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