245 lines
6.1 KiB
C
245 lines
6.1 KiB
C
#ifndef __KVT_H
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#define __KVT_H
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#include <stdint.h>
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#include <stdio.h>
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#include <mavl.h>
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#include "mavltypes.h"
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#include "bstr.h"
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/**
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* @addtogroup ALGOS
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* @{
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*/
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/**
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* @defgroup KTV KTV Store (Key-Type-Value-Store)
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* @{
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*/
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#define CW_KTV_MAX_KEY_LEN 1024
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/**
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* @struct cw_KTV
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* @file ktv.h
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* @brief Structure to store a key-type-value element.
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*/
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struct cw_KTV {
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/** The key for this element. A string. */
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char *key;
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/** Teh type of this element. */
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const struct cw_Type *type;
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/** The value for this element */
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union {
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uint32_t dword;
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uint16_t word;
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uint8_t byte;
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void *ptr;
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char *str;
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int boolean;
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float float_val;
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} val;
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const void * valguard;
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};
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typedef struct cw_KTV cw_KTV_t;
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/**
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* @class cw_Type
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* @author 7u83
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* @file ktv.h
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* @brief Representation of a cw_Type objetc
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*/
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struct cw_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) (struct cw_KTV * data);
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/** A method to put this object to a buffer */
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int (*put) (const struct cw_KTV * data, uint8_t * dst);
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/** The get method */
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struct cw_KTV *(*get) (struct cw_KTV * data, 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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* @param data pointer to KTV object
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* @param dst buffer where to put the string in
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* @param max_len maximum length of buffer
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* @return The number of bytes written to dst
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*/
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int (*to_str) (const struct cw_KTV * data, char *dst, int max_len);
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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 cw_KTV *(*from_str) (struct cw_KTV * data, const char *src);
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int (*len)(cw_KTV_t *);
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void *(*data)(cw_KTV_t *);
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const char * (*get_type_name)(cw_KTV_t*);
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int (*cast)(cw_KTV_t *);
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};
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typedef struct cw_Type cw_Type_t;
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struct cw_KTVValRange {
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int min,max;
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const char * name;
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};
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typedef struct cw_KTVValRange cw_KTVValRange_t;
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struct cw_KTVStruct {
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const struct cw_Type * type;
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const char * key;
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int len;
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int position;
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const void * valguard;
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};
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typedef struct cw_KTVStruct cw_KTVStruct_t;
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#define CW_KTVSTRUCT_L16 -2
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#define CW_KTVSTRUCT_L8 -3
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struct cw_KTVEnum{
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int value;
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const char * name;
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const void * type;
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int (*fun_in)();
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int (*fun_out)();
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};
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typedef struct cw_KTVEnum cw_KTVEnum_t;
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struct cw_KTVIndexed{
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int idxpos;
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void *type;
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};
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typedef struct cw_KTVIndexed cw_KTVIndexed_t;
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int cw_ktv_read_struct(mavl_t ktv,const cw_KTVStruct_t * stru, const char *pkey,
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uint8_t * data, int len);
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int cw_ktv_write_struct(mavl_t ktv, mavl_t def, const cw_KTVStruct_t * stru, const char *pkey,
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uint8_t * dst);
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extern const struct cw_Type cw_type_byte;
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extern const struct cw_Type cw_type_word;
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extern const struct cw_Type cw_type_dword;
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extern const struct cw_Type cw_type_bstr16;
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extern const struct cw_Type cw_type_bwstr;
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extern const struct cw_Type cw_type_str;
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extern const struct cw_Type cw_type_ipaddress;
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extern const struct cw_Type cw_type_sysptr;
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extern const struct cw_Type cw_type_bool;
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#define CW_TYPE_BYTE (&cw_type_byte)
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#define CW_TYPE_WORD (&cw_type_word)
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#define CW_TYPE_DWORD (&cw_type_dword)
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#define CW_TYPE_BSTR16 (&cw_type_bstr16)
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#define CW_TYPE_BWSTR (&cw_type_bwstr)
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#define CW_TYPE_IPADDRESS (&cw_type_ipaddress)
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#define CW_TYPE_SYSPTR (&cw_type_sysptr)
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#define CW_TYPE_STR (&cw_type_str)
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#define CW_TYPE_BOOL (&cw_type_bool)
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/*
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void cw_kvstore_mavl_delete(const void *data);
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*/
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cw_KTV_t *cw_ktv_add(mavl_t kvstore, const char *key, const struct cw_Type *type,
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const void * valguard,
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const uint8_t * data, int len);
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void cw_ktv_del_sub(mavl_t ktvstore, const char *basekey);
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cw_KTV_t * cw_ktv_replace(mavl_t kvtstore, const char *key, const struct cw_Type *type,
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const void * valguard,
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const uint8_t * data, int len);
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const char * cw_ktv_add_from_str(mavl_t kvtstore, const char *key, const struct cw_Type *type,
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const void * valguard,
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const char * str);
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int cw_ktv_mavlcmp(const void *v1, const void *v2);
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int cw_ktv_mavlcmp_type_by_name(const void *v1,const void *v2);
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void cw_ktv_mavldel(void *data);
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/**
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* Create a KTV store
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* @return a #mavl_t object representing the KTV store
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*/
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#define cw_ktv_create()\
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mavl_create(cw_ktv_mavlcmp, cw_ktv_mavldel, sizeof(cw_KTV_t))
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#define cw_ktv_create_types_tree()\
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mavl_create(cw_ktv_mavlcmp_type_by_name,NULL,sizeof(struct cw_Type *))
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int cw_ktv_read_line (FILE *f, char * key, char * type, char *val);
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int cw_ktv_read_file(FILE * file, mavl_t ktv, mavl_t types);
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cw_KTV_t * cw_ktv_get(mavl_t ktv, const char *key, const cw_Type_t * type);
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uint8_t cw_ktv_get_byte(mavl_t ktv,const char *key, uint8_t def);
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uint8_t cw_ktv_get_bool(mavl_t ktv,const char *key, uint8_t def);
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cw_KTV_t * cw_ktv_set_byte(mavl_t ktv,const char * key, uint8_t byte);
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cw_KTV_t * cw_ktv_set_dword(mavl_t ktv,const char * key, uint32_t dword);
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cw_KTV_t * cw_ktv_set_word(mavl_t ktv,const char * key, uint16_t word);
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bstr16_t cw_ktv_get_bstr16(mavl_t ktv,const char *key, bstr16_t def);
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uint16_t cw_ktv_get_word(mavl_t ktv,const char *key, uint16_t def);
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uint32_t cw_ktv_get_dword(mavl_t ktv,const char *key, uint32_t def);
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void * cw_ktv_get_sysptr(mavl_t ktv,const char *key, void * def);
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char * cw_ktv_get_str(mavl_t ktv,const char *key, char * def);
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int cw_ktv_idx_get(mavl_t ktv, const char *key);
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cw_KTV_t * cw_ktv_base_exists(mavl_t ktvstore, const char *basekey);
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int cw_ktv_save(mavl_t ktvstore, const char * filename);
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cw_KTV_t * cw_ktv_cast(cw_KTV_t *v,const cw_Type_t * type);
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extern const cw_Type_t * cw_ktv_std_types[];
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#define CW_KTV_STD_TYPES cw_ktv_std_types
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struct cw_KTV_Reader {
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const void * data;
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int (*xgetchar)(struct cw_KTV_Reader *);
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void (*ungetchar)(struct cw_KTV_Reader *, int c);
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int quote;
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int line;
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int pos;
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int prevpos;
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int next;
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int maxlen;
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char error[256];
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};
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void cw_ktv_init_str_reader(struct cw_KTV_Reader *r, const char * str, int len);
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int cw_ktv_parse_string(struct cw_KTV_Reader *r, char *key, char *type, char *val);
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/**
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* @} KTV
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* @} ALGOS
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*/
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#endif /* __KVT_H */
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