tabmul.h 8.05 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220
/*************** Tabmul H Declares Source Code File (.H) ***************/
/*  Name: TABMUL.H   Version 1.4                                       */
/*                                                                     */
/*  (C) Copyright to PlugDB Software Development          2003-2012    */
/*  Author: Olivier BERTRAND                                           */
/*                                                                     */
/*  This file contains the TDBMUL and TDBDIR classes declares.         */
/***********************************************************************/
#if defined(WIN32)
#include <io.h>
#else   // !WIN32
#include <sys/types.h>
#include <unistd.h>
#include <sys/stat.h>
#include <dirent.h>
#endif  // !WIN32
//#include "osutil.h"
#include "block.h"

typedef class TDBMUL *PTDBMUL;
typedef class TDBSDR *PTDBSDR;

/***********************************************************************/
/*  This is the MUL Access Method class declaration for files that are */
/*  physically split in multiple files having the same format.         */
/***********************************************************************/
class DllExport TDBMUL : public TDBASE {
//friend class MULCOL;
 public:
  // Constructor
  TDBMUL(PTDBASE tdbp);
  TDBMUL(PTDBMUL tdbp);

  // Implementation
  virtual AMT  GetAmType(void) {return Tdbp->GetAmType();}
  virtual PTDB Duplicate(PGLOBAL g);

  // Methods
  virtual void ResetDB(void);
  virtual PTDB CopyOne(PTABS t);
  virtual bool IsSame(PTBX tp) {return tp == (PTBX)Tdbp;}
  virtual PSZ  GetFile(PGLOBAL g) {return Tdbp->GetFile(g);}
  virtual int  GetRecpos(void) {return 0;}
  virtual PCOL ColDB(PGLOBAL g, PSZ name, int num);
          bool InitFileNames(PGLOBAL g);

  // Database routines
  virtual PCOL MakeCol(PGLOBAL g, PCOLDEF cdp, PCOL cprec, int n)
                {strcpy(g->Message, MSG(MUL_MAKECOL_ERR)); return NULL;}
  virtual int  Cardinality(PGLOBAL g);
  virtual int  GetMaxSize(PGLOBAL g);
  virtual int  GetProgMax(PGLOBAL g);
  virtual int  GetProgCur(void);
  virtual int  RowNumber(PGLOBAL g, bool b = false);
  virtual bool OpenDB(PGLOBAL g);
  virtual int  ReadDB(PGLOBAL g);
  virtual int  WriteDB(PGLOBAL g);
  virtual int  DeleteDB(PGLOBAL g, int irc);
  virtual void CloseDB(PGLOBAL g);

 protected:

  // Members
  TDBASE *Tdbp;               // Points to a (file) table class
  char*  *Filenames;          // Points to file names
  int     Rows;               // Total rows of already read files
  int     Mul;                // Type of multiple file list
  int     NumFiles;           // Number of physical files
  int     iFile;              // Index of currently processed file
  }; // end of class TDBMUL

/***********************************************************************/
/*  Directory listing table.                                           */
/***********************************************************************/
class DllExport DIRDEF : public TABDEF {    /* Directory listing table */
  friend class CATALOG;
  friend class TDBDIR;
 public:
  // Constructor
  DIRDEF(void) {Fn = NULL; Incl = false; Huge = false;}

  // Implementation
  virtual const char *GetType(void) {return "DIR";}

  // Methods
  virtual bool DefineAM(PGLOBAL g, LPCSTR am, int poff);
  virtual PTDB GetTable(PGLOBAL g, MODE m);

 protected:
  // Members
  PSZ     Fn;                 /* Path/Name of file search              */
  bool    Incl;               /* true to include sub-directories       */
  bool    Huge;               /* true if files can be larger than 2GB  */
  }; // end of DIRDEF

/***********************************************************************/
/*  This is the DIR Access Method class declaration for tables that    */
/*  represent a directory listing. The pathname is given at the create */
/*  time and can contain wildcard characters in the file name, and the */
/*  (virtual) table is populated when it is in use.                    */
/***********************************************************************/
class TDBDIR : public TDBASE {
  friend class DIRCOL;
 public:
  // Constructor
  TDBDIR(PDIRDEF tdp);
  TDBDIR(PTDBDIR tdbp);

  // Implementation
  virtual AMT  GetAmType(void) {return TYPE_AM_DIR;}
  virtual PTDB Duplicate(PGLOBAL g)
                {return (PTDB)new(g) TDBDIR(this);}

  // Methods
  virtual PTDB CopyOne(PTABS t);
  virtual int GetRecpos(void) {return iFile;}

  // Database routines
  virtual PCOL MakeCol(PGLOBAL g, PCOLDEF cdp, PCOL cprec, int n);
  virtual int  GetMaxSize(PGLOBAL g);
  virtual int  GetProgMax(PGLOBAL g) {return GetMaxSize(g);}
  virtual int  GetProgCur(void) {return iFile;}
  virtual bool OpenDB(PGLOBAL g);
  virtual int  ReadDB(PGLOBAL g);
  virtual int  WriteDB(PGLOBAL g);
  virtual int  DeleteDB(PGLOBAL g, int irc);
  virtual void CloseDB(PGLOBAL g);

 protected:
  char *Path(PGLOBAL g);

  // Members
  PSZ  To_File;                 // Points to file search pathname
  int  iFile;                   // Index of currently retrieved file
#if defined(WIN32)
  _finddata_t    FileData;      // Find data structure
  int  Hsearch;                 // Search handle
  char Drive[_MAX_DRIVE];       // Drive name
#else   // !WIN32
  struct stat    Fileinfo;      // File info structure
  struct dirent *Entry;         // Point to directory entry structure
  DIR *Dir;                     // To searched directory structure
  bool Done;                    // true when _splipath is done
  char Pattern[_MAX_FNAME+_MAX_EXT];
#endif  // !WIN32
  char Fpath[_MAX_PATH];        // Absolute file search pattern
  char Direc[_MAX_DIR];         // Search path
  char Fname[_MAX_FNAME];       // File name
  char Ftype[_MAX_EXT];         // File extention
  }; // end of class TDBDIR

/***********************************************************************/
/*  This is the DIR Access Method class declaration for tables that    */
/*  represent a directory listing. The pathname is given at the create */
/*  time and can contain wildcard characters in the file name, and the */
/*  (virtual) table is populated when it is in use. In addition, this  */
/*  class also includes files of included sub-directories.             */
/***********************************************************************/
class TDBSDR : public TDBDIR {
  friend class DIRCOL;
 public:
  // Constructors
  TDBSDR(PDIRDEF tdp) : TDBDIR(tdp) {Sub = NULL;}
  TDBSDR(PTDBSDR tdbp);

  // Implementation
  virtual PTDB Duplicate(PGLOBAL g)
                {return (PTDB)new(g) TDBSDR(this);}

  // Methods
  virtual PTDB CopyOne(PTABS t);

  // Database routines
  virtual int  GetMaxSize(PGLOBAL g);
  virtual int  GetProgMax(PGLOBAL g) {return GetMaxSize(g);}
  virtual bool OpenDB(PGLOBAL g);
  virtual int  ReadDB(PGLOBAL g);
//virtual void CloseDB(PGLOBAL g);

 protected:
          int  FindInDir(PGLOBAL g);

  typedef struct _Sub_Dir {
    struct _Sub_Dir *Next;
    struct _Sub_Dir *Prev;
#if defined(WIN32)
    int H;               // Search handle
#else   // !WIN32
    DIR *D;
#endif  // !WIN32
    size_t Len;           // Initial directory name length
    } SUBDIR, *PSUBDIR;

  // Members
  PSUBDIR Sub;                  // To current Subdir block
  }; // end of class TDBSDR

/***********************************************************************/
/*  Class DIRCOL: DIR access method column descriptor.                 */
/*  This A.M. is used for tables populated by DIR file name list.      */
/***********************************************************************/
class DIRCOL : public COLBLK {
 public:
  // Constructors
  DIRCOL(PCOLDEF cdp, PTDB tdbp, PCOL cprec, int i, PSZ am = "DIR");
  DIRCOL(DIRCOL *colp, PTDB tdbp); // Constructor used in copy process

  // Implementation
  virtual int    GetAmType(void) {return TYPE_AM_DIR;}

  // Methods
  virtual void   ReadColumn(PGLOBAL g);

 protected:
  // Default constructor not to be used
  DIRCOL(void) {}

  // Members
  int     N;                  // Column number
  }; // end of class DIRCOL