c_base.h

jpeg压缩程序

/***************************************************/
/*----------C_base.h-------------------------------*/
/*-----Relational Database Management Engine-------*/
/* Copyright:WangHaiyun      HiSoft                */
/* Date:1996/08/01                                 */
/* Last Modified:                                  */
/***************************************************/

#ifndef YES
  #define YES   1
  #define NO    0
#endif
#define MAX_FIELD_LEN 255

/*------Data type definitons------*/
typedef struct
{
char field_name[11];
char field_type;
char field_len;
char field_dec;
int  field_pos;
}DBF_STRU;

typedef struct
{
int handle;
struct date modify_date;
long rec_count;
unsigned stru_len;
int fld_count;
int rec_len;
DBF_STRU *dbf_stru;
long rec_no;
char *curr_rec;
int eof;
int update_tag;
}DBF;

typedef struct
{
char modify_tag;
char field_type;
unsigned long addr;
unsigned long len;
}GRAPH_TEXT;

typedef struct
{
  int handle;
  unsigned long filesize;
}DBT;

typedef unsigned char NODE;

typedef struct
{
int handle;
long filesize;
long node_position;
long root_position;
int  i_p_node;
int  text_len;
char *key;
char key_type;
int  key_len;
NODE *node;
int node_type;
int i_count;
long pre_node;
long suc_node;
NODE *i_front;
NODE *i_rear;
NODE *i_curr;
int update_tag;
}IDX;

/*-----macro definition in C_base-------*/
#define reccount(dbf)      (dbf->rec_count)
#define recno(dbf)         (dbf->rec_no)
#define isdeleted(dbf)     (*(dbf->curr_rec)=='*')
#define eof_DBF(dbf)       (dbf->eof)
#define go_record(dbf,r_no) skip((dbf),(r_no)-dbf->rec_no)
#define display(dbf)       printf("%6d",dbf->rec_no);\
                           printf("%s\n",dbf->curr_rec)
#define field_name(dbf,field_no)  ((dbf)->dbf_stru[(field_no)-1].field_name)

/*------library function declaration------*/ 
long _Cdecl diffdate   (struct date d1,struct date d2);
DBF *_Cdecl use        (char *dbf_name);
int  _Cdecl close_DBF  (DBF *dbf);
long _Cdecl get_record (DBF *dbf,char *fmt,...);
long _Cdecl put_record (DBF *dbf,char *fmt,...);
long _Cdecl skip       (DBF *dbf,int step);
DBF  *_Cdecl create_DBF (char *dbf_name,int fld_count,
                        DBF_STRU *dbf_stru);
long _Cdecl append_blank (DBF *dbf);
long _Cdecl pack        (DBF *dbf);
int  _Cdecl zap         (DBF *dbf);
long _Cdecl delete     (DBF *dbf);
long _Cdecl recall     (DBF *dbf);
int  _Cdecl field_no    (DBF *dbf,char *fields_name);
DBF  *_Cdecl project    (char *dest_name,DBF *sour,
                       int para_num,...);
DBF *_Cdecl join       (char *dest_name,DBF *sour1,DBF *sour2,int 
       field_no1,int field_no2);

DBT *_Cdecl create_DBT(char *dbt_name);
DBT *_Cdecl open_DBT(char* dbt_name);
int _Cdecl close_DBT(DBT *dbt);
int _Cdecl put_gt(DBF *dbf,int field_no,DBT *dbt,
                 long info_len,void *buff,int type);  
int _Cdecl get_gt(DBF *dbf,int field_no,DBT *dbt,
                 void *buff);  
int _Cdecl file_to_gt(DBF *dbf,int field_no,DBT *dbt,
            char *filename,int type);
int _Cdecl gt_to_file(DBF *dbf,int field_no,DBT *dbt,
            char *filename);
int _Cdecl delete_gt(DBF *dbf,int field_no);
int _Cdecl pack_gt(DBF *dbf,int field_no,
                   char *.old_dbt_name,
                   char *new_dbt_name);