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Annotation of src/usr.bin/tmux/cmd-clear-history.c, Revision 1.4

1.4     ! nicm        1: /* $OpenBSD: cmd-clear-history.c,v 1.3 2009/07/13 23:11:35 nicm Exp $ */
1.1       nicm        2:
                      3: /*
                      4:  * Copyright (c) 2009 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:
                     21: #include "tmux.h"
                     22:
                     23: /*
                     24:  * Clear pane history.
                     25:  */
                     26:
                     27: int    cmd_clear_history_exec(struct cmd *, struct cmd_ctx *);
                     28:
                     29: const struct cmd_entry cmd_clear_history_entry = {
                     30:        "clear-history", "clearhist",
                     31:        CMD_PANE_WINDOW_USAGE,
1.3       nicm       32:        0, 0,
1.1       nicm       33:        cmd_pane_init,
                     34:        cmd_pane_parse,
                     35:        cmd_clear_history_exec,
                     36:        cmd_pane_free,
                     37:        cmd_pane_print
                     38: };
                     39:
                     40: int
                     41: cmd_clear_history_exec(struct cmd *self, struct cmd_ctx *ctx)
                     42: {
                     43:        struct cmd_pane_data    *data = self->data;
                     44:        struct winlink          *wl;
                     45:        struct window_pane      *wp;
                     46:        struct grid             *gd;
                     47:
                     48:        if ((wl = cmd_find_window(ctx, data->target, NULL)) == NULL)
                     49:                return (-1);
                     50:        if (data->pane == -1)
                     51:                wp = wl->window->active;
                     52:        else {
                     53:                wp = window_pane_at_index(wl->window, data->pane);
                     54:                if (wp == NULL) {
                     55:                        ctx->error(ctx, "no pane: %d", data->pane);
                     56:                        return (-1);
                     57:                }
                     58:        }
                     59:        gd = wp->base.grid;
                     60:
                     61:        grid_move_lines(gd, 0, gd->hsize, gd->sy);
                     62:        gd->hsize = 0;
                     63:
                     64:        return (0);
                     65: }