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129 lines
4.8 KiB
129 lines
4.8 KiB
/* |
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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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/* Default max unused reader buffer. */ |
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#define REDIS_READER_MAX_BUF (1024*16) |
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/* Default multi-bulk element limit */ |
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#define REDIS_READER_MAX_ARRAY_ELEMENTS ((1LL<<32) - 1) |
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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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long long 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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long long maxelements; /* Max multi-bulk elements */ |
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redisReadTask **task; |
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int tasks; |
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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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