286 lines
6.9 KiB
C
286 lines
6.9 KiB
C
/*
|
|
* $Id$
|
|
*
|
|
Copyright (c) 2016-2020 Chung, Hyung-Hwan. All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions
|
|
are met:
|
|
1. Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
2. 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.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE AUTHOR "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 AUTHOR 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 _MIO_JSON_H_
|
|
#define _MIO_JSON_H_
|
|
|
|
#include <mio.h>
|
|
|
|
/**
|
|
* The mio_json_t type defines a simple json parser.
|
|
*/
|
|
typedef struct mio_json_t mio_json_t;
|
|
|
|
/* ========================================================================= */
|
|
|
|
enum mio_json_state_t
|
|
{
|
|
MIO_JSON_STATE_START,
|
|
MIO_JSON_STATE_IN_ARRAY,
|
|
MIO_JSON_STATE_IN_DIC,
|
|
|
|
MIO_JSON_STATE_IN_WORD_VALUE,
|
|
MIO_JSON_STATE_IN_NUMERIC_VALUE,
|
|
MIO_JSON_STATE_IN_STRING_VALUE,
|
|
MIO_JSON_STATE_IN_CHARACTER_VALUE
|
|
};
|
|
typedef enum mio_json_state_t mio_json_state_t;
|
|
|
|
/* ========================================================================= */
|
|
enum mio_json_inst_t
|
|
{
|
|
MIO_JSON_INST_START_ARRAY,
|
|
MIO_JSON_INST_END_ARRAY,
|
|
MIO_JSON_INST_START_DIC,
|
|
MIO_JSON_INST_END_DIC,
|
|
|
|
MIO_JSON_INST_KEY,
|
|
|
|
MIO_JSON_INST_CHARACTER, /* there is no such element as character in real JSON */
|
|
MIO_JSON_INST_STRING,
|
|
MIO_JSON_INST_NUMBER,
|
|
MIO_JSON_INST_NIL,
|
|
MIO_JSON_INST_TRUE,
|
|
MIO_JSON_INST_FALSE,
|
|
};
|
|
typedef enum mio_json_inst_t mio_json_inst_t;
|
|
|
|
typedef int (*mio_json_instcb_t) (
|
|
mio_json_t* json,
|
|
mio_json_inst_t inst,
|
|
mio_oow_t level,
|
|
const mio_oocs_t* str
|
|
);
|
|
|
|
|
|
typedef struct mio_json_state_node_t mio_json_state_node_t;
|
|
struct mio_json_state_node_t
|
|
{
|
|
mio_json_state_t state;
|
|
mio_oow_t level;
|
|
union
|
|
{
|
|
struct
|
|
{
|
|
int got_value;
|
|
} ia; /* in array */
|
|
|
|
struct
|
|
{
|
|
/* 0: ready to get key (at the beginning or got comma),
|
|
* 1: got key, 2: got colon, 3: got value */
|
|
int state;
|
|
} id; /* in dictionary */
|
|
struct
|
|
{
|
|
int escaped;
|
|
int digit_count;
|
|
/* acc is always of unicode type to handle \u and \U.
|
|
* in the bch mode, it will get converted to a utf8 stream. */
|
|
mio_uch_t acc;
|
|
} sv;
|
|
struct
|
|
{
|
|
int escaped;
|
|
int digit_count;
|
|
/* for a character, no way to support the unicode character
|
|
* in the bch mode */
|
|
mio_ooch_t acc;
|
|
} cv;
|
|
struct
|
|
{
|
|
int dotted;
|
|
} nv;
|
|
} u;
|
|
mio_json_state_node_t* next;
|
|
};
|
|
|
|
struct mio_json_t
|
|
{
|
|
mio_t* mio;
|
|
mio_json_instcb_t instcb;
|
|
|
|
mio_json_state_node_t state_top;
|
|
mio_json_state_node_t* state_stack;
|
|
mio_oocs_t tok;
|
|
mio_oow_t tok_capa;
|
|
};
|
|
|
|
/* ========================================================================= */
|
|
|
|
typedef struct mio_jsonwr_t mio_jsonwr_t;
|
|
|
|
typedef int (*mio_jsonwr_writecb_t) (
|
|
mio_jsonwr_t* jsonwr,
|
|
/*mio_oow_t level,*/
|
|
const mio_bch_t* dptr,
|
|
mio_oow_t dlen
|
|
);
|
|
|
|
typedef struct mio_jsonwr_state_node_t mio_jsonwr_state_node_t;
|
|
struct mio_jsonwr_state_node_t
|
|
{
|
|
mio_json_state_t state;
|
|
mio_oow_t level;
|
|
mio_oow_t index;
|
|
int dic_awaiting_val;
|
|
mio_jsonwr_state_node_t* next;
|
|
};
|
|
|
|
struct mio_jsonwr_t
|
|
{
|
|
mio_t* mio;
|
|
mio_jsonwr_writecb_t writecb;
|
|
mio_jsonwr_state_node_t state_top;
|
|
mio_jsonwr_state_node_t* state_stack;
|
|
int pretty;
|
|
|
|
mio_bch_t wbuf[4096];
|
|
mio_oow_t wbuf_len;
|
|
};
|
|
|
|
/* ========================================================================= */
|
|
|
|
#if defined(__cplusplus)
|
|
extern "C" {
|
|
#endif
|
|
|
|
MIO_EXPORT mio_json_t* mio_json_open (
|
|
mio_t* mio,
|
|
mio_oow_t xtnsize
|
|
);
|
|
|
|
MIO_EXPORT void mio_json_close (
|
|
mio_json_t* json
|
|
);
|
|
|
|
MIO_EXPORT int mio_json_init (
|
|
mio_json_t* json,
|
|
mio_t* mio
|
|
);
|
|
|
|
MIO_EXPORT void mio_json_fini (
|
|
mio_json_t* json
|
|
);
|
|
|
|
#if defined(MIO_HAVE_INLINE)
|
|
static MIO_INLINE mio_t* mio_json_getmio (mio_json_t* json) { return json->mio; }
|
|
#else
|
|
# define mio_json_getmio(json) (((mio_json_t*)(json))->mio)
|
|
#endif
|
|
|
|
#if defined(MIO_HAVE_INLINE)
|
|
static MIO_INLINE void* mio_json_getxtn (mio_json_t* json) { return (void*)(json + 1); }
|
|
#else
|
|
#define mio_json_getxtn(json) ((void*)((mio_json_t*)(json) + 1))
|
|
#endif
|
|
|
|
MIO_EXPORT void mio_json_setinstcb (
|
|
mio_json_t* json,
|
|
mio_json_instcb_t instcb
|
|
);
|
|
|
|
MIO_EXPORT mio_json_state_t mio_json_getstate (
|
|
mio_json_t* json
|
|
);
|
|
|
|
MIO_EXPORT void mio_json_resetstates (
|
|
mio_json_t* json
|
|
);
|
|
|
|
/**
|
|
* The mio_json_feed() function processes the raw data.
|
|
*
|
|
* If stop_if_ever_complted is 0, it returns 0 on success. If the value pointed to by
|
|
* rem is greater 0 after the call, processing is not complete and more feeding is
|
|
* required. Incomplete feeding may be caused by incomplete byte sequences or incomplete
|
|
* json object.
|
|
*
|
|
* If stop_if_ever_completed is non-zero, it returns 0 upon incomplet byte sequence or
|
|
* incomplete json object. It returns 1 if it sees the first complete json object. It stores
|
|
* the size of remaning raw data in the memory pointed to by rem.
|
|
*
|
|
* The function returns -1 upon failure.
|
|
*/
|
|
MIO_EXPORT int mio_json_feed (
|
|
mio_json_t* json,
|
|
const void* ptr,
|
|
mio_oow_t len,
|
|
mio_oow_t* rem,
|
|
int stop_if_ever_completed
|
|
);
|
|
|
|
/* ========================================================================= */
|
|
|
|
MIO_EXPORT mio_jsonwr_t* mio_jsonwr_open (
|
|
mio_t* mio,
|
|
mio_oow_t xtnsize
|
|
);
|
|
|
|
MIO_EXPORT void mio_jsonwr_close (
|
|
mio_jsonwr_t* jsonwr
|
|
);
|
|
|
|
MIO_EXPORT int mio_jsonwr_init (
|
|
mio_jsonwr_t* jsonwr,
|
|
mio_t* mio
|
|
);
|
|
|
|
MIO_EXPORT void mio_jsonwr_fini (
|
|
mio_jsonwr_t* jsonwr
|
|
);
|
|
|
|
#if defined(MIO_HAVE_INLINE)
|
|
static MIO_INLINE mio_t* mio_jsonwr_getmio (mio_jsonwr_t* jsonwr) { return jsonwr->mio; }
|
|
#else
|
|
# define mio_jsonwr_getmio(jsonwr) (((mio_jsonwr_t*)(jsonwr))->mio)
|
|
#endif
|
|
|
|
#if defined(MIO_HAVE_INLINE)
|
|
static MIO_INLINE void* mio_jsonwr_getxtn (mio_jsonwr_t* jsonwr) { return (void*)(jsonwr + 1); }
|
|
#else
|
|
#define mio_jsonwr_getxtn(jsonwr) ((void*)((mio_jsonwr_t*)(jsonwr) + 1))
|
|
#endif
|
|
|
|
MIO_EXPORT void mio_jsonwr_setwritecb (
|
|
mio_jsonwr_t* jsonwr,
|
|
mio_jsonwr_writecb_t writecb
|
|
);
|
|
|
|
MIO_EXPORT int mio_jsonwr_write (
|
|
mio_jsonwr_t* jsonwr,
|
|
mio_json_inst_t inst,
|
|
int is_uchars,
|
|
const void* dptr,
|
|
mio_oow_t dlen
|
|
);
|
|
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|
|
|
|
#endif
|