hist.h 3.3 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980
  1. /* $NetBSD: hist.h,v 1.7 2002/03/18 16:00:53 christos Exp $ */
  2. /*-
  3. * Copyright (c) 1992, 1993
  4. * The Regents of the University of California. All rights reserved.
  5. *
  6. * This code is derived from software contributed to Berkeley by
  7. * Christos Zoulas of Cornell University.
  8. *
  9. * Redistribution and use in source and binary forms, with or without
  10. * modification, are permitted provided that the following conditions
  11. * are met:
  12. * 1. Redistributions of source code must retain the above copyright
  13. * notice, this list of conditions and the following disclaimer.
  14. * 2. Redistributions in binary form must reproduce the above copyright
  15. * notice, this list of conditions and the following disclaimer in the
  16. * documentation and/or other materials provided with the distribution.
  17. * 3. All advertising materials mentioning features or use of this software
  18. * must display the following acknowledgement:
  19. * This product includes software developed by the University of
  20. * California, Berkeley and its contributors.
  21. * 4. Neither the name of the University nor the names of its contributors
  22. * may be used to endorse or promote products derived from this software
  23. * without specific prior written permission.
  24. *
  25. * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  26. * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  27. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  28. * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  29. * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  30. * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  31. * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  32. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  33. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  34. * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  35. * SUCH DAMAGE.
  36. *
  37. * @(#)hist.h 8.1 (Berkeley) 6/4/93
  38. */
  39. /*
  40. * el.hist.c: History functions
  41. */
  42. #ifndef _h_el_hist
  43. #define _h_el_hist
  44. #include "histedit.h"
  45. typedef int (*hist_fun_t)(ptr_t, HistEvent *, int, ...);
  46. typedef struct el_history_t {
  47. char *buf; /* The history buffer */
  48. size_t sz; /* Size of history buffer */
  49. char *last; /* The last character */
  50. int eventno; /* Event we are looking for */
  51. ptr_t ref; /* Argument for history fcns */
  52. hist_fun_t fun; /* Event access */
  53. HistEvent ev; /* Event cookie */
  54. } el_history_t;
  55. #define HIST_FUN(el, fn, arg) \
  56. ((((*(el)->el_history.fun) ((el)->el_history.ref, &(el)->el_history.ev, \
  57. fn, arg)) == -1) ? NULL : (el)->el_history.ev.str)
  58. #define HIST_NEXT(el) HIST_FUN(el, H_NEXT, NULL)
  59. #define HIST_FIRST(el) HIST_FUN(el, H_FIRST, NULL)
  60. #define HIST_LAST(el) HIST_FUN(el, H_LAST, NULL)
  61. #define HIST_PREV(el) HIST_FUN(el, H_PREV, NULL)
  62. #define HIST_EVENT(el, num) HIST_FUN(el, H_EVENT, num)
  63. #define HIST_LOAD(el, fname) HIST_FUN(el, H_LOAD fname)
  64. #define HIST_SAVE(el, fname) HIST_FUN(el, H_SAVE fname)
  65. protected int hist_init(EditLine *);
  66. protected void hist_end(EditLine *);
  67. protected el_action_t hist_get(EditLine *);
  68. protected int hist_set(EditLine *, hist_fun_t, ptr_t);
  69. protected int hist_list(EditLine *, int, const char **);
  70. protected int hist_enlargebuf(EditLine *, size_t, size_t);
  71. #endif /* _h_el_hist */