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Annotation of src/usr.bin/tmux/grid-cell.c, Revision 1.1

1.1     ! nicm        1: /* $OpenBSD: grid.c,v 1.20 2012/07/10 11:53:01 nicm Exp $ */
        !             2:
        !             3: /*
        !             4:  * Copyright (c) 2012 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 <string.h>
        !            22:
        !            23: #include "tmux.h"
        !            24:
        !            25: /* Get cell width. */
        !            26: u_int
        !            27: grid_cell_width(const struct grid_cell *gc)
        !            28: {
        !            29:        return (gc->xstate >> 4);
        !            30: }
        !            31:
        !            32: /* Get cell data. */
        !            33: void
        !            34: grid_cell_get(const struct grid_cell *gc, struct utf8_data *ud)
        !            35: {
        !            36:        ud->size = gc->xstate & 0xf;
        !            37:        ud->width = gc->xstate >> 4;
        !            38:        memcpy(ud->data, gc->xdata, ud->size);
        !            39: }
        !            40:
        !            41: /* Set cell data. */
        !            42: void
        !            43: grid_cell_set(struct grid_cell *gc, const struct utf8_data *ud)
        !            44: {
        !            45:        memcpy(gc->xdata, ud->data, ud->size);
        !            46:        gc->xstate = (ud->width << 4) | ud->size;
        !            47: }
        !            48:
        !            49: /* Set a single character as cell data. */
        !            50: void
        !            51: grid_cell_one(struct grid_cell *gc, u_char ch)
        !            52: {
        !            53:        *gc->xdata = ch;
        !            54:        gc->xstate = (1 << 4) | 1;
        !            55: }