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35876eaab9
terminal to be switched between several different windows and programs displayed on one terminal be detached from one terminal and moved to another. ok deraadt pirofti
120 lines
3.4 KiB
C
120 lines
3.4 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2006 Nicholas Marriott <nicm@users.sourceforge.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef ARRAY_H
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#define ARRAY_H
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#define ARRAY_DECL(n, c) \
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struct n { \
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c *list; \
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u_int num; \
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size_t space; \
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}
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#define ARRAY_ITEM(a, i) ((a)->list[i])
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#define ARRAY_ITEMSIZE(a) (sizeof *(a)->list)
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#define ARRAY_INITIALSPACE(a) (10 * ARRAY_ITEMSIZE(a))
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#define ARRAY_ENSURE(a, n) do { \
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if (UINT_MAX - (n) < (a)->num) \
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fatalx("number too big"); \
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if (SIZE_MAX / ((a)->num + (n)) < ARRAY_ITEMSIZE(a)) \
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fatalx("size too big"); \
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if ((a)->space == 0) { \
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(a)->space = ARRAY_INITIALSPACE(a); \
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(a)->list = xrealloc((a)->list, 1, (a)->space); \
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} \
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while ((a)->space <= ((a)->num + (n)) * ARRAY_ITEMSIZE(a)) { \
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(a)->list = xrealloc((a)->list, 2, (a)->space); \
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(a)->space *= 2; \
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} \
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} while (0)
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#define ARRAY_EMPTY(a) ((a) == NULL || (a)->num == 0)
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#define ARRAY_LENGTH(a) ((a)->num)
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#define ARRAY_DATA(a) ((a)->list)
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#define ARRAY_FIRST(a) ARRAY_ITEM(a, 0)
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#define ARRAY_LAST(a) ARRAY_ITEM(a, (a)->num - 1)
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#define ARRAY_INIT(a) do { \
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(a)->num = 0; \
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(a)->list = NULL; \
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(a)->space = 0; \
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} while (0)
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#define ARRAY_CLEAR(a) do { \
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(a)->num = 0; \
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} while (0)
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#define ARRAY_SET(a, i, s) do { \
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(a)->list[i] = s; \
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} while (0)
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#define ARRAY_ADD(a, s) do { \
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ARRAY_ENSURE(a, 1); \
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(a)->list[(a)->num] = s; \
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(a)->num++; \
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} while (0)
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#define ARRAY_INSERT(a, i, s) do { \
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ARRAY_ENSURE(a, 1); \
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if ((i) < (a)->num) { \
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memmove((a)->list + (i) + 1, (a)->list + (i), \
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ARRAY_ITEMSIZE(a) * ((a)->num - (i))); \
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} \
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(a)->list[i] = s; \
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(a)->num++; \
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} while (0)
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#define ARRAY_REMOVE(a, i) do { \
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if ((i) < (a)->num - 1) { \
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memmove((a)->list + (i), (a)->list + (i) + 1, \
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ARRAY_ITEMSIZE(a) * ((a)->num - (i) - 1)); \
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} \
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(a)->num--; \
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if ((a)->num == 0) \
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ARRAY_FREE(a); \
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} while (0)
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#define ARRAY_EXPAND(a, n) do { \
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ARRAY_ENSURE(a, n); \
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(a)->num += n; \
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} while (0)
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#define ARRAY_TRUNC(a, n) do { \
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if ((a)->num > n) \
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(a)->num -= n; \
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else \
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ARRAY_FREE(a); \
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} while (0)
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#define ARRAY_CONCAT(a, b) do { \
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ARRAY_ENSURE(a, (b)->num); \
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memcpy((a)->list + (a)->num, (b)->list, (b)->num * ARRAY_ITEMSIZE(a)) \
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(a)->num += (b)->num; \
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} while (0)
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#define ARRAY_FREE(a) do { \
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if ((a)->list != NULL) \
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xfree((a)->list); \
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ARRAY_INIT(a); \
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} while (0)
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#define ARRAY_FREEALL(a) do { \
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ARRAY_FREE(a); \
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xfree(a); \
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} while (0)
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#endif
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