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  1. /* GNU DBM - DataBase Manager include file
  2.    Copyright 1989, 1991  Free Software Foundation, Inc.
  3.    Written by Philip A. Nelson.
  4.  
  5. This program is free software; you can redistribute it and/or modify
  6. it under the terms of the GNU General Public License as published by
  7. the Free Software Foundation; either version 2 of the License, or
  8. (at your option) any later version.
  9.  
  10. This program is distributed in the hope that it will be useful,
  11. but WITHOUT ANY WARRANTY; without even the implied warranty of
  12. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13. GNU General Public License for more details.
  14.  
  15. You should have received a copy of the GNU General Public License
  16. along with this program; if not, write to the Free Software
  17. Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  18.  
  19. /* You may contact the author by:
  20.        e-mail:  phil@wwu.edu
  21.       us-mail:  Philip A. Nelson
  22.                 Computer Science Department
  23.                 Western Washington University
  24.                 Bellingham, WA 98226
  25.         phone:  (206) 676-3035
  26.        
  27. *************************************************************************/
  28.  
  29. /* Parameters to gdbm_open for READERS, WRITERS, and WRITERS who
  30.    can create the database. */
  31. #define  GDBM_READER  0
  32. #define  GDBM_WRITER  1
  33. #define  GDBM_WRCREAT 2
  34. #define  GDBM_NEWDB   3
  35.  
  36. /* Parameters to gdbm_store for simple insertion or replacement. */
  37. #define  GDBM_INSERT  0
  38. #define  GDBM_REPLACE 1
  39.  
  40.  
  41. /* The data and key structure.  This structure is defined for compatibility. */
  42. typedef struct {
  43.         char *dptr;
  44.         int   dsize;
  45.       } datum;
  46.  
  47.  
  48. /* The file information header. This is good enough for most applications. */
  49. typedef struct {int dummy[10];} *GDBM_FILE;
  50.  
  51.  
  52. /* These are the routines! */
  53.  
  54. extern GDBM_FILE gdbm_open ();
  55.  
  56. extern void      gdbm_close ();
  57.  
  58. extern datum     gdbm_fetch ();
  59.  
  60. extern int       gdbm_store ();
  61.  
  62. extern int       gdbm_delete ();
  63.  
  64. extern datum     gdbm_firstkey ();
  65.  
  66. extern datum     gdbm_nextkey ();
  67.  
  68. extern int       gdbm_reorganize ();
  69.  
  70.  
  71. /* gdbm sends back the following error codes in the variable gdbm_errno. */
  72. typedef enum {  NO_ERROR,
  73.                 MALLOC_ERROR,
  74.                 BLOCK_SIZE_ERROR,
  75.                 FILE_OPEN_ERROR,
  76.                 FILE_WRITE_ERROR,
  77.                 FILE_SEEK_ERROR,
  78.                 FILE_READ_ERROR,
  79.                 BAD_MAGIC_NUMBER,
  80.                 EMPTY_DATABASE,
  81.                 CANT_BE_READER,
  82.                 CANT_BE_WRITER,
  83.                 READER_CANT_RECOVER,
  84.                 READER_CANT_DELETE,
  85.                 READER_CANT_STORE,
  86.                 READER_CANT_REORGANIZE,
  87.                 UNKNOWN_UPDATE,
  88.                 ITEM_NOT_FOUND,
  89.                 REORGANIZE_FAILED,
  90.                 CANNOT_REPLACE}
  91.         gdbm_error;
  92.