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Annotation of src/usr.bin/tmux/paste.c, Revision 1.5

1.5     ! nicm        1: /* $OpenBSD: paste.c,v 1.4 2009/09/07 18:50:45 nicm Exp $ */
1.1       nicm        2:
                      3: /*
                      4:  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
                      5:  *
                      6:  * Permission to use, copy, modify, and distribute this software for any
                      7:  * purpose with or without fee is hereby granted, provided that the above
                      8:  * copyright notice and this permission notice appear in all copies.
                      9:  *
                     10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     14:  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
                     15:  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
                     16:  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     17:  */
                     18:
                     19: #include <sys/types.h>
                     20: #include <sys/time.h>
                     21:
                     22: #include <string.h>
                     23:
                     24: #include "tmux.h"
                     25:
                     26: void
                     27: paste_init_stack(struct paste_stack *ps)
                     28: {
                     29:        ARRAY_INIT(ps);
                     30: }
                     31:
                     32: void
                     33: paste_free_stack(struct paste_stack *ps)
                     34: {
                     35:        while (paste_free_top(ps) == 0)
                     36:                ;
                     37: }
                     38:
                     39: struct paste_buffer *
                     40: paste_walk_stack(struct paste_stack *ps, uint *idx)
                     41: {
                     42:        struct paste_buffer     *pb;
                     43:
                     44:        pb = paste_get_index(ps, *idx);
                     45:        (*idx)++;
                     46:        return (pb);
                     47: }
                     48:
                     49: struct paste_buffer *
                     50: paste_get_top(struct paste_stack *ps)
                     51: {
                     52:        if (ARRAY_LENGTH(ps) == 0)
                     53:                return (NULL);
                     54:        return (ARRAY_FIRST(ps));
                     55: }
                     56:
                     57: struct paste_buffer *
                     58: paste_get_index(struct paste_stack *ps, u_int idx)
                     59: {
                     60:        if (idx >= ARRAY_LENGTH(ps))
                     61:                return (NULL);
                     62:        return (ARRAY_ITEM(ps, idx));
                     63: }
                     64:
                     65: int
                     66: paste_free_top(struct paste_stack *ps)
                     67: {
                     68:        struct paste_buffer     *pb;
                     69:
                     70:        if (ARRAY_LENGTH(ps) == 0)
                     71:                return (-1);
                     72:
                     73:        pb = ARRAY_FIRST(ps);
                     74:        ARRAY_REMOVE(ps, 0);
                     75:
                     76:        xfree(pb->data);
                     77:        xfree(pb);
                     78:
                     79:        return (0);
                     80: }
                     81:
                     82: int
                     83: paste_free_index(struct paste_stack *ps, u_int idx)
                     84: {
                     85:        struct paste_buffer     *pb;
                     86:
                     87:        if (idx >= ARRAY_LENGTH(ps))
                     88:                return (-1);
                     89:
                     90:        pb = ARRAY_ITEM(ps, idx);
                     91:        ARRAY_REMOVE(ps, idx);
                     92:
                     93:        xfree(pb->data);
                     94:        xfree(pb);
                     95:
                     96:        return (0);
                     97: }
                     98:
                     99: void
1.4       nicm      100: paste_add(struct paste_stack *ps, u_char *data, size_t size, u_int limit)
1.1       nicm      101: {
                    102:        struct paste_buffer     *pb;
1.2       nicm      103:
                    104:        if (*data == '\0')
                    105:                return;
1.1       nicm      106:
1.3       nicm      107:        while (ARRAY_LENGTH(ps) >= limit) {
                    108:                pb = ARRAY_LAST(ps);
                    109:                xfree(pb->data);
                    110:                xfree(pb);
1.1       nicm      111:                ARRAY_TRUNC(ps, 1);
1.3       nicm      112:        }
1.1       nicm      113:
                    114:        pb = xmalloc(sizeof *pb);
                    115:        ARRAY_INSERT(ps, 0, pb);
                    116:
                    117:        pb->data = data;
1.4       nicm      118:        pb->size = size;
1.1       nicm      119:        if (gettimeofday(&pb->tv, NULL) != 0)
1.5     ! nicm      120:                fatal("gettimeofday failed");
1.1       nicm      121: }
                    122:
                    123: int
1.4       nicm      124: paste_replace(struct paste_stack *ps, u_int idx, u_char *data, size_t size)
1.1       nicm      125: {
                    126:        struct paste_buffer     *pb;
                    127:
                    128:        if (idx >= ARRAY_LENGTH(ps))
                    129:                return (-1);
                    130:
                    131:        pb = ARRAY_ITEM(ps, idx);
                    132:        xfree(pb->data);
                    133:
                    134:        pb->data = data;
1.4       nicm      135:        pb->size = size;
1.1       nicm      136:        if (gettimeofday(&pb->tv, NULL) != 0)
1.5     ! nicm      137:                fatal("gettimeofday failed");
1.1       nicm      138:
                    139:        return (0);
                    140: }