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/* Copyright 2018, UCAR/Unidata.
See the COPYRIGHT file for more information.
*/
#ifndef NCJSON_H
#define NCJSON_H
#ifndef OPTEXPORT
#ifdef NETCDF_JSON_H
#define OPTEXPORT static
#else /*!NETCDF_JSON_H*/
#ifdef _WIN32
#define OPTEXPORT __declspec(dllexport)
#else
#define OPTEXPORT extern
#endif
#endif /*NETCDF_JSON_H*/
#endif /*OPTEXPORT*/
/**************************************************/
/* Json object sorts (note use of term sort rather than e.g. type or discriminant) */
#define NCJ_UNDEF 0
#define NCJ_STRING 1
#define NCJ_INT 2
#define NCJ_DOUBLE 3
#define NCJ_BOOLEAN 4
#define NCJ_DICT 5
#define NCJ_ARRAY 6
#define NCJ_NULL 7
#define NCJ_NSORTS 8
/* Define a struct to store primitive values as unquoted
strings. The sort will provide more info. Do not bother with
a union since the amount of saved space is minimal.
*/
typedef struct NCjson {
int sort; /* of this object */
char* string; /* sort != DICT|ARRAY */
struct NCjlist {
size_t len;
struct NCjson** contents;
} list; /* sort == DICT|ARRAY */
} NCjson;
/* Structure to hold result of convertinf one json sort to value of another type;
don't use union so we can know when to reclaim sval
*/
struct NCJconst {int bval; long long ival; double dval; char* sval;};
#define NCJconst_empty {0,0,0.0,NULL}
/**************************************************/
/* Extended API */
/* Return 0 if ok else -1 */
#if defined(__cplusplus)
extern "C" {
#endif
/* Parse a string to NCjson*/
OPTEXPORT int NCJparse(const char* text, unsigned flags, NCjson** jsonp);
/* Parse a counted string to NCjson*/
OPTEXPORT int NCJparsen(size_t len, const char* text, unsigned flags, NCjson** jsonp);
/* Reclaim a JSON tree */
OPTEXPORT void NCJreclaim(NCjson* json);
/* Create a new JSON node of a given sort */
OPTEXPORT int NCJnew(int sort, NCjson** objectp);
/* Create new json object with given string content */
OPTEXPORT int NCJnewstring(int sort, const char* value, NCjson** jsonp);
/* Create new json object with given counted string content */
OPTEXPORT int NCJnewstringn(int sort, size_t len, const char* value, NCjson** jsonp);
/* Get dict key value by name */
OPTEXPORT int NCJdictget(const NCjson* dict, const char* key, const NCjson** valuep);
/* Convert one json sort to value of another type; don't use union so we can know when to reclaim sval */
OPTEXPORT int NCJcvt(const NCjson* value, int outsort, struct NCJconst* output);
/* Insert an atomic value to an array or dict object. */
OPTEXPORT int NCJaddstring(NCjson* json, int sort, const char* s);
/* Append value to an array or dict object. */
OPTEXPORT int NCJappend(NCjson* object, NCjson* value);
/* Insert key-value pair into a dict object. key will be copied */
OPTEXPORT int NCJinsert(NCjson* object, const char* key, NCjson* value);
/* Insert key-value pair as strings into a dict object.
key and value will be copied */
OPTEXPORT int NCJinsertstring(NCjson* object, const char* key, const char* value);
/* Insert key-value pair where value is an int */
OPTEXPORT int NCJinsertint(NCjson* object, const char* key, long long ivalue);
/* Unparser to convert NCjson object to text in buffer */
OPTEXPORT int NCJunparse(const NCjson* json, unsigned flags, char** textp);
/* Deep clone a json object */
OPTEXPORT int NCJclone(const NCjson* json, NCjson** clonep);
#ifndef NETCDF_JSON_H
/* dump NCjson* object to output file */
OPTEXPORT void NCJdump(const NCjson* json, unsigned flags, FILE*);
/* convert NCjson* object to output string */
OPTEXPORT const char* NCJtotext(const NCjson* json);
#endif /*NETCDF_JSON_H*/
#if defined(__cplusplus)
}
#endif
/* Getters */
#define NCJsort(x) ((x)->sort)
#define NCJstring(x) ((x)->string)
#define NCJlength(x) ((x)==NULL ? 0 : (x)->list.len)
#define NCJdictlength(x) ((x)==NULL ? 0 : (x)->list.len/2)
#define NCJcontents(x) ((x)->list.contents)
#define NCJith(x,i) ((x)->list.contents[i])
#define NCJdictith(x,i) ((x)->list.contents[2*i])
/* Setters */
#define NCJsetsort(x,s) (x)->sort=(s)
#define NCJsetstring(x,y) (x)->string=(y)
#define NCJsetcontents(x,c) (x)->list.contents=(c)
#define NCJsetlength(x,l) (x)->list.len=(l)
/* Misc */
#define NCJisatomic(j) ((j)->sort != NCJ_ARRAY && (j)->sort != NCJ_DICT && (j)->sort != NCJ_NULL && (j)->sort != NCJ_UNDEF)
/**************************************************/
#endif /*NCJSON_H*/
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