123 lines
4.6 KiB
C
123 lines
4.6 KiB
C
/*
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* Copyright (c) 2009-2011, Salvatore Sanfilippo <antirez at gmail dot com>
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* Copyright (c) 2010-2011, Pieter Noordhuis <pcnoordhuis at gmail dot com>
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Redis nor the names of its contributors may be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __HIREDIS_READ_H
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#define __HIREDIS_READ_H
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#include <stdio.h> /* for size_t */
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#define REDIS_ERR -1
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#define REDIS_OK 0
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/* When an error occurs, the err flag in a context is set to hold the type of
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* error that occurred. REDIS_ERR_IO means there was an I/O error and you
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* should use the "errno" variable to find out what is wrong.
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* For other values, the "errstr" field will hold a description. */
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#define REDIS_ERR_IO 1 /* Error in read or write */
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#define REDIS_ERR_EOF 3 /* End of file */
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#define REDIS_ERR_PROTOCOL 4 /* Protocol error */
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#define REDIS_ERR_OOM 5 /* Out of memory */
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#define REDIS_ERR_TIMEOUT 6 /* Timed out */
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#define REDIS_ERR_OTHER 2 /* Everything else... */
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#define REDIS_REPLY_STRING 1
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#define REDIS_REPLY_ARRAY 2
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#define REDIS_REPLY_INTEGER 3
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#define REDIS_REPLY_NIL 4
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#define REDIS_REPLY_STATUS 5
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#define REDIS_REPLY_ERROR 6
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#define REDIS_REPLY_DOUBLE 7
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#define REDIS_REPLY_BOOL 8
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#define REDIS_REPLY_MAP 9
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#define REDIS_REPLY_SET 10
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#define REDIS_REPLY_ATTR 11
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#define REDIS_REPLY_PUSH 12
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#define REDIS_REPLY_BIGNUM 13
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#define REDIS_REPLY_VERB 14
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#define REDIS_READER_MAX_BUF (1024*16) /* Default max unused reader buffer. */
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct redisReadTask {
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int type;
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int elements; /* number of elements in multibulk container */
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int idx; /* index in parent (array) object */
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void *obj; /* holds user-generated value for a read task */
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struct redisReadTask *parent; /* parent task */
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void *privdata; /* user-settable arbitrary field */
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} redisReadTask;
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typedef struct redisReplyObjectFunctions {
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void *(*createString)(const redisReadTask*, char*, size_t);
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void *(*createArray)(const redisReadTask*, size_t);
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void *(*createInteger)(const redisReadTask*, long long);
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void *(*createDouble)(const redisReadTask*, double, char*, size_t);
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void *(*createNil)(const redisReadTask*);
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void *(*createBool)(const redisReadTask*, int);
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void (*freeObject)(void*);
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} redisReplyObjectFunctions;
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typedef struct redisReader {
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int err; /* Error flags, 0 when there is no error */
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char errstr[128]; /* String representation of error when applicable */
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char *buf; /* Read buffer */
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size_t pos; /* Buffer cursor */
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size_t len; /* Buffer length */
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size_t maxbuf; /* Max length of unused buffer */
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redisReadTask rstack[9];
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int ridx; /* Index of current read task */
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void *reply; /* Temporary reply pointer */
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redisReplyObjectFunctions *fn;
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void *privdata;
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} redisReader;
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/* Public API for the protocol parser. */
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redisReader *redisReaderCreateWithFunctions(redisReplyObjectFunctions *fn);
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void redisReaderFree(redisReader *r);
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int redisReaderFeed(redisReader *r, const char *buf, size_t len);
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int redisReaderGetReply(redisReader *r, void **reply);
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#define redisReaderSetPrivdata(_r, _p) (int)(((redisReader*)(_r))->privdata = (_p))
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#define redisReaderGetObject(_r) (((redisReader*)(_r))->reply)
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#define redisReaderGetError(_r) (((redisReader*)(_r))->errstr)
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#ifdef __cplusplus
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}
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#endif
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#endif
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