69 lines
1.3 KiB
C
69 lines
1.3 KiB
C
#ifndef __MDATA_H
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#define __MDATA_H
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#include <stdint.h>
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union mdata_ElemData {
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void *raw;
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uint8_t byte;
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uint16_t word;
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uint32_t dword;
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uint64_t qword;
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};
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struct mdata_Elem{
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const char * key;
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const struct mdata_Type * type;
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union mdata_ElemData data;
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};
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struct mdata_Type{
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/** A human readable name for this type */
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const char *name;
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/** A pointer to a function to delete elements of this type */
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void (*del)(void*);
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/** A method to put this object to a buffer */
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int (*put)(struct mdata_Elem *i,uint8_t*dst);
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/** The get emthod */
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struct mdata_Elem * (*get)(const uint8_t*src, int len);
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/** A pointer to a function to convert elements of this type to a string.
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This function is mainly used to store elements to an SQL database
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or to json strings */
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int (*to_str)(const struct mdata_Elem * e,char *dst);
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/** Cereate an item of this type from a string, which was previously
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created by the #del function. */
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struct mdata_Elem * (*from_str)(const char *src);
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/*
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int (*def)(void *, void *);
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*/
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};
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#define MDATA_TYPE_INIT()\
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{\
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_I_NAME,\
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_I_DEL,\
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_I_PUT,\
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_I_GET,\
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_I_TO_STR,\
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_I_FROM_STR \
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}
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struct mdata_Elem *mdata_elem_new( const struct mdata_Type * type );
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#endif /* __MDATA_H */
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