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/** @file
This section defines the Regular Expression Protocol. This protocol isused to match
Unicode strings against Regular Expression patterns.
Copyright (c) 2015-2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@par Revision Reference:
This Protocol was introduced in UEFI Specification 2.5.
**/
#ifndef __REGULAR_EXPRESSION_PROTOCOL_H__
#define __REGULAR_EXPRESSION_PROTOCOL_H__
#define EFI_REGULAR_EXPRESSION_PROTOCOL_GUID \
{ \
0xB3F79D9A, 0x436C, 0xDC11, {0xB0, 0x52, 0xCD, 0x85, 0xDF, 0x52, 0x4C, 0xE6 } \
}
#define EFI_REGEX_SYNTAX_TYPE_POSIX_EXTENDED_GUID \
{ \
0x5F05B20F, 0x4A56, 0xC231, {0xFA, 0x0B, 0xA7, 0xB1, 0xF1, 0x10, 0x04, 0x1D } \
}
#define EFI_REGEX_SYNTAX_TYPE_PERL_GUID \
{ \
0x63E60A51, 0x497D, 0xD427, {0xC4, 0xA5, 0xB8, 0xAB, 0xDC, 0x3A, 0xAE, 0xB6 } \
}
#define EFI_REGEX_SYNTAX_TYPE_ECMA_262_GUID \
{ \
0x9A473A4A, 0x4CEB, 0xB95A, {0x41, 0x5E, 0x5B, 0xA0, 0xBC, 0x63, 0x9B, 0x2E } \
}
typedef struct _EFI_REGULAR_EXPRESSION_PROTOCOL EFI_REGULAR_EXPRESSION_PROTOCOL;
typedef struct {
CONST CHAR16 *CapturePtr; // Pointer to the start of the captured sub-expression
// within matched String.
UINTN Length; // Length of captured sub-expression.
} EFI_REGEX_CAPTURE;
typedef EFI_GUID EFI_REGEX_SYNTAX_TYPE;
//
// Protocol member functions
//
/**
Returns information about the regular expression syntax types supported
by the implementation.
This A pointer to the EFI_REGULAR_EXPRESSION_PROTOCOL
instance.
RegExSyntaxTypeListSize On input, the size in bytes of RegExSyntaxTypeList.
On output with a return code of EFI_SUCCESS, the
size in bytes of the data returned in
RegExSyntaxTypeList. On output with a return code
of EFI_BUFFER_TOO_SMALL, the size of
RegExSyntaxTypeListrequired to obtain the list.
RegExSyntaxTypeList A caller-allocated memory buffer filled by the
driver with one EFI_REGEX_SYNTAX_TYPEelement
for each supported Regular expression syntax
type. The list must not change across multiple
calls to the same driver. The first syntax
type in the list is the default type for the
driver.
@retval EFI_SUCCESS The regular expression syntax types list
was returned successfully.
@retval EFI_UNSUPPORTED The service is not supported by this driver.
@retval EFI_DEVICE_ERROR The list of syntax types could not be
retrieved due to a hardware or firmware error.
@retval EFI_BUFFER_TOO_SMALL The buffer RegExSyntaxTypeList is too small
to hold the result.
@retval EFI_INVALID_PARAMETER RegExSyntaxTypeListSize is NULL
**/
typedef
EFI_STATUS
(EFIAPI *EFI_REGULAR_EXPRESSION_GET_INFO) (
IN EFI_REGULAR_EXPRESSION_PROTOCOL *This,
IN OUT UINTN *RegExSyntaxTypeListSize,
OUT EFI_REGEX_SYNTAX_TYPE *RegExSyntaxTypeList
);
/**
Checks if the input string matches to the regular expression pattern.
This A pointer to the EFI_REGULAR_EXPRESSION_PROTOCOL instance.
Type EFI_REGULAR_EXPRESSION_PROTOCOL is defined in Section
XYZ.
String A pointer to a NULL terminated string to match against the
regular expression string specified by Pattern.
Pattern A pointer to a NULL terminated string that represents the
regular expression.
SyntaxType A pointer to the EFI_REGEX_SYNTAX_TYPE that identifies the
regular expression syntax type to use. May be NULL in which
case the function will use its default regular expression
syntax type.
Result On return, points to TRUE if String fully matches against
the regular expression Pattern using the regular expression
SyntaxType. Otherwise, points to FALSE.
Captures A Pointer to an array of EFI_REGEX_CAPTURE objects to receive
the captured groups in the event of a match. The full
sub-string match is put in Captures[0], and the results of N
capturing groups are put in Captures[1:N]. If Captures is
NULL, then this function doesn't allocate the memory for the
array and does not build up the elements. It only returns the
number of matching patterns in CapturesCount. If Captures is
not NULL, this function returns a pointer to an array and
builds up the elements in the array. CapturesCount is also
updated to the number of matching patterns found. It is the
caller's responsibility to free the memory pool in Captures
and in each CapturePtr in the array elements.
CapturesCount On output, CapturesCount is the number of matching patterns
found in String. Zero means no matching patterns were found
in the string.
@retval EFI_SUCCESS The regular expression string matching
completed successfully.
@retval EFI_UNSUPPORTED The regular expression syntax specified by
SyntaxTypeis not supported by this driver.
@retval EFI_DEVICE_ERROR The regular expression string matching
failed due to a hardware or firmware error.
@retval EFI_INVALID_PARAMETER String, Pattern, Result, or CapturesCountis
NULL.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_REGULAR_EXPRESSION_MATCH) (
IN EFI_REGULAR_EXPRESSION_PROTOCOL *This,
IN CHAR16 *String,
IN CHAR16 *Pattern,
IN EFI_REGEX_SYNTAX_TYPE *SyntaxType, OPTIONAL
OUT BOOLEAN *Result,
OUT EFI_REGEX_CAPTURE **Captures, OPTIONAL
OUT UINTN *CapturesCount
);
struct _EFI_REGULAR_EXPRESSION_PROTOCOL {
EFI_REGULAR_EXPRESSION_MATCH MatchString;
EFI_REGULAR_EXPRESSION_GET_INFO GetInfo;
} ;
extern EFI_GUID gEfiRegularExpressionProtocolGuid;
//
// For regular expression rules specified in the POSIX Extended Regular
// Expression (ERE) Syntax:
//
extern EFI_GUID gEfiRegexSyntaxTypePosixExtendedGuid;
//
// For regular expression rules specifiedin the ECMA 262 Specification
//
extern EFI_GUID gEfiRegexSyntaxTypeEcma262Guid;
//
// For regular expression rules specified in the Perl standard:
//
extern EFI_GUID gEfiRegexSyntaxTypePerlGuid;
#endif
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