FsRtlIsNameInExpression routine
The FsRtlIsNameInExpression routine determines whether a Unicode string matches the specified pattern.
Syntax
BOOLEAN FsRtlIsNameInExpression( _In_ PUNICODE_STRING Expression, _In_ PUNICODE_STRING Name, _In_ BOOLEAN IgnoreCase, _In_opt_ PWCH UpcaseTable );
Parameters
- Expression [in]
-
A pointer to the pattern string. Can contain wildcard characters. If IgnoreCase is TRUE, Expression must be uppercase.
- Name [in]
-
A pointer to the string to be compared against the pattern. Cannot contain wildcard characters.
- IgnoreCase [in]
-
Set to TRUE for case-insensitive matching, FALSE otherwise.
- UpcaseTable [in, optional]
-
Optional pointer to uppercase character table to use for case-insensitive matching. If this value is not supplied, the default system uppercase character table is used.
Return value
FsRtlIsNameInExpression returns TRUE if the string matches the pattern, FALSE otherwise.
Remarks
The following wildcard characters can be used in the pattern string.
| Wildcard character | Meaning |
|---|---|
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* (asterisk) |
Matches zero or more characters. |
|
? (question mark) |
Matches a single character. |
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DOS_DOT |
Matches either a period or zero characters beyond the name string. |
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DOS_QM |
Matches any single character or, upon encountering a period or end of name string, advances the expression to the end of the set of contiguous DOS_QMs. |
|
DOS_STAR |
Matches zero or more characters until encountering and matching the final . in the name. |
Note If only one of the string parameters has a length of zero, FsRtlIsNameInExpression returns FALSE. This means that "*" does not match a null string.
If both parameters are null strings, FsRtlIsNameInExpression returns TRUE.
For information about other string-handling routines, see Strings.
Requirements
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Version | This routine is available in Windows 2000 and later versions of the Windows operating system. |
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Header |
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Library |
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IRQL | PASSIVE_LEVEL |
See also
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Build date: 11/21/2012
