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ruanhaishen
redis
Commits
033fb554
Commit
033fb554
authored
May 30, 2010
by
Pieter Noordhuis
Browse files
expose extra functionality from ziplist.c
parent
177a0a0b
Changes
2
Hide whitespace changes
Inline
Side-by-side
ziplist.c
View file @
033fb554
...
...
@@ -432,6 +432,12 @@ unsigned char *ziplistNext(unsigned char *p) {
return
(
p
[
0
]
==
ZIP_END
)
?
NULL
:
p
+
zipRawEntryLength
(
p
);
}
/* Return pointer to previous entry in ziplist. */
unsigned
char
*
ziplistPrev
(
unsigned
char
*
p
)
{
zlentry
entry
=
zipEntry
(
p
);
return
(
entry
.
prevrawlen
==
0
)
?
NULL
:
p
-
entry
.
prevrawlen
;
}
/* Get entry pointer to by 'p' and store in either 'e' or 'v' depending
* on the encoding of the entry. 'e' is always set to NULL to be able
* to find out whether the string pointer or the integer value was set.
...
...
@@ -455,10 +461,9 @@ unsigned int ziplistGet(unsigned char *p, char **sstr, unsigned int *slen, long
return
1
;
}
/* Delete a range of entries from the ziplist. */
unsigned
char
*
ziplistDeleteRange
(
unsigned
char
*
zl
,
unsigned
int
index
,
unsigned
int
num
)
{
unsigned
char
*
p
=
ziplistIndex
(
zl
,
index
);
return
p
==
NULL
?
zl
:
__ziplistDelete
(
zl
,
p
,
num
);
/* Insert an entry at "p". */
unsigned
char
*
ziplistInsert
(
unsigned
char
*
zl
,
unsigned
char
*
p
,
char
*
s
,
unsigned
int
slen
)
{
return
__ziplistInsert
(
zl
,
p
,
s
,
slen
);
}
/* Delete a single entry from the ziplist, pointed to by *p.
...
...
@@ -474,6 +479,12 @@ unsigned char *ziplistDelete(unsigned char *zl, unsigned char **p) {
return
zl
;
}
/* Delete a range of entries from the ziplist. */
unsigned
char
*
ziplistDeleteRange
(
unsigned
char
*
zl
,
unsigned
int
index
,
unsigned
int
num
)
{
unsigned
char
*
p
=
ziplistIndex
(
zl
,
index
);
return
(
p
==
NULL
)
?
zl
:
__ziplistDelete
(
zl
,
p
,
num
);
}
/* Compare entry pointer to by 'p' with 'entry'. Return 1 if equal. */
unsigned
int
ziplistCompare
(
unsigned
char
*
p
,
char
*
sstr
,
unsigned
int
slen
)
{
zlentry
entry
;
...
...
ziplist.h
View file @
033fb554
...
...
@@ -6,8 +6,10 @@ unsigned char *ziplistPush(unsigned char *zl, char *s, unsigned int slen, int wh
unsigned
char
*
ziplistPop
(
unsigned
char
*
zl
,
sds
*
target
,
int
where
);
unsigned
char
*
ziplistIndex
(
unsigned
char
*
zl
,
int
index
);
unsigned
char
*
ziplistNext
(
unsigned
char
*
p
);
unsigned
char
*
ziplistPrev
(
unsigned
char
*
p
);
unsigned
int
ziplistGet
(
unsigned
char
*
p
,
char
**
sstr
,
unsigned
int
*
slen
,
long
long
*
sval
);
unsigned
char
*
ziplistDelete
(
unsigned
char
*
zl
,
unsigned
char
**
p
);
unsigned
char
*
ziplistInsert
(
unsigned
char
*
zl
,
unsigned
char
*
p
,
char
*
s
,
unsigned
int
slen
);
unsigned
char
*
ziplistDeleteRange
(
unsigned
char
*
zl
,
unsigned
int
index
,
unsigned
int
num
);
unsigned
int
ziplistCompare
(
unsigned
char
*
p
,
char
*
entry
,
unsigned
int
elen
);
unsigned
int
ziplistLen
(
unsigned
char
*
zl
);
...
...
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