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/*
* Copyright (c) 2009-2010, Salvatore Sanfilippo <antirez at gmail dot com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Redis nor the names of its contributors may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __HIREDIS_H
#define __HIREDIS_H
#define REDIS_ERR -1
#define REDIS_OK 0
/* Connection type can be blocking or non-blocking and is set in the
* least significant bit of the flags field in redisContext. */
#define REDIS_BLOCK 0x1
/* Connection may be disconnected before being free'd. The second bit
* in the flags field is set when the context is connected. */
#define REDIS_CONNECTED 0x2
#define REDIS_ERROR -1
#define REDIS_REPLY_ERROR 0
#define REDIS_REPLY_STRING 1
#define REDIS_REPLY_ARRAY 2
#define REDIS_REPLY_INTEGER 3
#define REDIS_REPLY_NIL 4
#define REDIS_REPLY_STATUS 5
#include "sds.h"
/* This is the reply object returned by redisCommand() */
typedef struct redisReply {
int type; /* REDIS_REPLY_* */
long long integer; /* The integer when type is REDIS_REPLY_INTEGER */
char *reply; /* Used for both REDIS_REPLY_ERROR and REDIS_REPLY_STRING */
size_t elements; /* number of elements, for REDIS_REPLY_ARRAY */
struct redisReply **element; /* elements vector for REDIS_REPLY_ARRAY */
} redisReply;
typedef struct redisReadTask {
int type;
void *parent; /* optional pointer to parent object */
int idx; /* index in parent (array) object */
} redisReadTask;
typedef struct redisReplyObjectFunctions {
void *(*createString)(redisReadTask*, char*, size_t);
void *(*createArray)(redisReadTask*, int);
void *(*createInteger)(redisReadTask*, long long);
void *(*createNil)(redisReadTask*);
void (*freeObject)(void*);
} redisReplyFunctions;
struct redisContext; /* need forward declaration of redisContext */
/* Callbacks triggered on non-reply events. */
typedef void (redisContextCallback)(struct redisContext*, void*);
/* Reply callback prototype and container */
typedef void redisCallbackFn(struct redisContext*, redisReply*, const void*);
typedef struct redisCallback {
redisCallbackFn *fn;
const void *privdata;
} redisCallback;
/* Context for a connection to Redis */
typedef struct redisContext {
int fd;
int flags;
sds error; /* Error object is set when in erronous state */
sds obuf; /* Write buffer */
/* Function set for reply buildup and reply reader */
redisReplyFunctions *fn;
void *reader;
/* Non-reply callbacks */
redisContextCallback *cbDisconnect;
void *privdataDisconnect;
redisContextCallback *cbCommand;
void *privdataCommand;
redisContextCallback *cbFree;
void *privdataFree;
/* Reply callbacks */
redisCallback *callbacks;
int cpos;
int clen;
} redisContext;
void freeReplyObject(void *reply);
void *redisReplyReaderCreate(redisReplyFunctions *fn);
void *redisReplyReaderGetObject(void *reader);
char *redisReplyReaderGetError(void *reader);
void redisReplyReaderFree(void *ptr);
void redisReplyReaderFeed(void *reader, char *buf, int len);
int redisReplyReaderGetReply(void *reader, void **reply);
redisContext *redisConnect(const char *ip, int port, redisReplyFunctions *fn);
redisContext *redisConnectNonBlock(const char *ip, int port, redisReplyFunctions *fn);
void redisSetDisconnectCallback(redisContext *c, redisContextCallback *fn, void *privdata);
void redisSetCommandCallback(redisContext *c, redisContextCallback *fn, void *privdata);
void redisSetFreeCallback(redisContext *c, redisContextCallback *fn, void *privdata);
void redisDisconnect(redisContext *c);
void redisFree(redisContext *c);
int redisBufferRead(redisContext *c);
int redisBufferWrite(redisContext *c, int *done);
int redisGetReply(redisContext *c, void **reply);
int redisProcessCallbacks(redisContext *c);
void *redisCommand(redisContext *c, const char *format, ...);
void *redisCommandWithCallback(redisContext *c, redisCallbackFn *fn, const void *privdata, const char *format, ...);
#endif
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