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The EventBuffer class
(PECL event >= 1.5.0)
はじめに
EventBuffer
represents Libevent's "evbuffer", an utility functionality for buffered
I/O.
Event buffers are meant to be generally useful for doing the "buffer" part
of buffered network I/O.
クラス概要
EventBuffer
{
public
bool
add
(
string
$data
)
public
int
copyout
(
string
&$data
,
int
$max_bytes
)
public
bool
drain
(
int
$len
)
public
bool
expand
(
int
$len
)
public
bool
freeze
(
bool
$at_front
)
public
void
lock
( void
)
public
bool
prepend
(
string
$data
)
public
string
pullup
(
int
$size
)
public
string
read
(
int
$max_bytes
)
public
string
readLine
(
int
$eol_style
)
public
mixed
search
(
string
$what
[,
int
$start
= -1
[,
int
$end
= -1
]] )
public
mixed
searchEol
([
int
$start
= -1
[,
int
$eol_style
=
EventBuffer::EOL_ANY
]] )
public
string
substr
(
int
$start
[,
int
$length
] )
}
プロパティ
-
length
-
The number of bytes stored in an event buffer.
-
contiguous_space
-
The number of bytes stored contiguously at the front of the buffer. The
bytes in a buffer may be stored in multiple separate chunks of memory;
the property returns the number of bytes currently stored in the first
chunk.
定義済み定数
-
EventBuffer::EOL_ANY
-
The end of line is any sequence of any number of carriage return and
linefeed characters. This format is not very useful; it exists mainly
for backward compatibility.
-
EventBuffer::EOL_CRLF
-
The end of the line is an optional carriage return, followed by a
linefeed. (In other words, it is either a
"\r\n"
or a
"\n"
.) This format is useful in parsing text-based Internet protocols,
since the standards generally prescribe a
"\r\n"
line-terminator, but nonconformant clients sometimes say just
"\n"
.
-
EventBuffer::EOL_CRLF_STRICT
-
The end of a line is a single carriage return, followed by a single
linefeed. (This is also known as
"\r\n"
. The ASCII values are
0x0D
0x0A
).
-
EventBuffer::EOL_LF
-
The end of a line is a single linefeed character. (This is also known
as
"\n"
. It is ASCII value is
0x0A
.)
-
EventBuffer::PTR_SET
-
Flag used as argument of
EventBuffer::setPosition()
method. If this flag specified, the position pointer is moved to an
absolute position within the buffer.
-
EventBuffer::PTR_ADD
-
The same as
EventBuffer::PTR_SET
, except this flag causes
EventBuffer::setPosition()
method to move position forward up to the specified number of
bytes(instead of setting absolute position).
目次
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