NAME
EvmEventNameMatch(), EvmEventNameMatchStr() — match EVM event name
SYNOPSIS
#include <evm/evm.h>
EvmStatus_t EvmEventNameMatch(
const char *pattern,
EvmEvent_t event,
EvmBoolean_t *match );
EvmStatus_t EvmEventNameMatchStr(
const char *pattern,
const char *candidate,
EvmBoolean_t *match );
Library
EVM Support Library
(libevm.so).
Parameters
- pattern
The event name pattern sought.
The pattern may be any valid event name string.
It may include wildcard characters in place of any component.
- event
The event containing the event name to be compared against the pattern.
- match
The result of the match. This operand is set to
EvmTRUE
if the name matches the pattern, and to
EvmFALSE
if it does not.
- candidate
A character string to be matched against the pattern
DESCRIPTION
Because special matching rules apply when deciding whether a candidate
event name matches a known name, the EVM name matching functions should be
used for matching purposes, rather than the C string comparison functions
(memcpm(),
strcmp()).
The EVM functions match an event name against a supplied pattern,
ignoring any trailing appended components in the candidate name,
and correctly matching wildcard characters.
The
EvmEventNameMatch
function takes an event and an event name pattern as input,
and returns an indication of whether the event contains a name which
matches the pattern in the match output argument.
The pattern may be any valid event name string,
and may also include wildcard characters in place of any component.
A wildcard
*
in the pattern matches zero or more name components.
A
?
matches exactly one component.
A match occurs if the event name matches all components indicated
by the pattern, even if the name has additional trailing elements.
The
EvmEventNameMatchStr
function performs the same check as
EvmEventNameMatch,
but takes a character string as the candidate event name,
instead of extracting the candidate event name from a supplied event.
Both functions set the match output argument to
EvmTRUE
if the name matches the pattern, and to
EvmFALSE
if it does not.
RETURN VALUE
- EvmERROR_NONE
The operation completed without error.
The comparison was successful.
The value of the match operand indicates whether the name matches the pattern.
- EvmERROR_INVALID_ARGUMENT
One of the arguments to the function is invalid.
The supplied pattern contains invalid characters.
- EvmERROR_NOT_PRESENT
The supplied event does not contain a name.
ERRORS
The value of
errno
is not set.
SEE ALSO
Routines
memccpy(3C),
strcat(3C).
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