mirror of
https://github.com/tmux/tmux.git
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3a5219c6d0
that 14 bytes are wasted for each character in the BMP, only store characters of three bytes or less in the cell itself and store others (outside the BMP or with combining characters) in a separate global tree. Can reduce grid memory use for heavy Unicode users by around 30%.
1411 lines
31 KiB
C
1411 lines
31 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
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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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#include <sys/types.h>
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#include <stdlib.h>
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#include <string.h>
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#include "tmux.h"
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/*
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* Grid data. This is the basic data structure that represents what is shown on
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* screen.
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*
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* A grid is a grid of cells (struct grid_cell). Lines are not allocated until
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* cells in that line are written to. The grid is split into history and
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* viewable data with the history starting at row (line) 0 and extending to
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* (hsize - 1); from hsize to hsize + (sy - 1) is the viewable data. All
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* functions in this file work on absolute coordinates, grid-view.c has
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* functions which work on the screen data.
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*/
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/* Default grid cell data. */
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const struct grid_cell grid_default_cell = {
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{ { ' ' }, 0, 1, 1 }, 0, 0, 8, 8, 0
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};
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/* Cleared grid cell data. */
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const struct grid_cell grid_cleared_cell = {
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{ { ' ' }, 0, 1, 1 }, 0, GRID_FLAG_CLEARED, 8, 8, 0
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};
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static const struct grid_cell_entry grid_cleared_entry = {
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GRID_FLAG_CLEARED, { .data = { 0, 8, 8, ' ' } }
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};
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/* Store cell in entry. */
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static void
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grid_store_cell(struct grid_cell_entry *gce, const struct grid_cell *gc,
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u_char c)
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{
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gce->flags = (gc->flags & ~GRID_FLAG_CLEARED);
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gce->data.fg = gc->fg & 0xff;
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if (gc->fg & COLOUR_FLAG_256)
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gce->flags |= GRID_FLAG_FG256;
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gce->data.bg = gc->bg & 0xff;
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if (gc->bg & COLOUR_FLAG_256)
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gce->flags |= GRID_FLAG_BG256;
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gce->data.attr = gc->attr;
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gce->data.data = c;
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}
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/* Check if a cell should be an extended cell. */
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static int
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grid_need_extended_cell(const struct grid_cell_entry *gce,
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const struct grid_cell *gc)
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{
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if (gce->flags & GRID_FLAG_EXTENDED)
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return (1);
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if (gc->attr > 0xff)
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return (1);
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if (gc->data.size != 1 || gc->data.width != 1)
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return (1);
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if ((gc->fg & COLOUR_FLAG_RGB) || (gc->bg & COLOUR_FLAG_RGB))
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return (1);
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if (gc->us != 0) /* only supports 256 or RGB */
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return (1);
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return (0);
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}
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/* Get an extended cell. */
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static void
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grid_get_extended_cell(struct grid_line *gl, struct grid_cell_entry *gce,
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int flags)
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{
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u_int at = gl->extdsize + 1;
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gl->extddata = xreallocarray(gl->extddata, at, sizeof *gl->extddata);
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gl->extdsize = at;
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gce->offset = at - 1;
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gce->flags = (flags | GRID_FLAG_EXTENDED);
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}
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/* Set cell as extended. */
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static struct grid_extd_entry *
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grid_extended_cell(struct grid_line *gl, struct grid_cell_entry *gce,
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const struct grid_cell *gc)
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{
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struct grid_extd_entry *gee;
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int flags = (gc->flags & ~GRID_FLAG_CLEARED);
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if (~gce->flags & GRID_FLAG_EXTENDED)
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grid_get_extended_cell(gl, gce, flags);
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else if (gce->offset >= gl->extdsize)
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fatalx("offset too big");
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gl->flags |= GRID_LINE_EXTENDED;
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gee = &gl->extddata[gce->offset];
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gee->data = utf8_map_big(&gc->data);
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gee->attr = gc->attr;
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gee->flags = flags;
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gee->fg = gc->fg;
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gee->bg = gc->bg;
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gee->us = gc->us;
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return (gee);
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}
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/* Free up unused extended cells. */
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static void
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grid_compact_line(struct grid_line *gl)
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{
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int new_extdsize = 0;
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struct grid_extd_entry *new_extddata;
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struct grid_cell_entry *gce;
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struct grid_extd_entry *gee;
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u_int px, idx;
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if (gl->extdsize == 0)
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return;
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for (px = 0; px < gl->cellsize; px++) {
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gce = &gl->celldata[px];
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if (gce->flags & GRID_FLAG_EXTENDED)
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new_extdsize++;
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}
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if (new_extdsize == 0) {
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free(gl->extddata);
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gl->extddata = NULL;
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gl->extdsize = 0;
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return;
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}
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new_extddata = xreallocarray(NULL, new_extdsize, sizeof *gl->extddata);
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idx = 0;
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for (px = 0; px < gl->cellsize; px++) {
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gce = &gl->celldata[px];
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if (gce->flags & GRID_FLAG_EXTENDED) {
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gee = &gl->extddata[gce->offset];
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memcpy(&new_extddata[idx], gee, sizeof *gee);
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gce->offset = idx++;
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}
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}
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free(gl->extddata);
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gl->extddata = new_extddata;
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gl->extdsize = new_extdsize;
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}
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/* Get line data. */
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struct grid_line *
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grid_get_line(struct grid *gd, u_int line)
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{
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return (&gd->linedata[line]);
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}
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/* Adjust number of lines. */
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void
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grid_adjust_lines(struct grid *gd, u_int lines)
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{
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gd->linedata = xreallocarray(gd->linedata, lines, sizeof *gd->linedata);
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}
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/* Copy default into a cell. */
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static void
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grid_clear_cell(struct grid *gd, u_int px, u_int py, u_int bg)
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{
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struct grid_line *gl = &gd->linedata[py];
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struct grid_cell_entry *gce = &gl->celldata[px];
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struct grid_extd_entry *gee;
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memcpy(gce, &grid_cleared_entry, sizeof *gce);
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if (bg != 8) {
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if (bg & COLOUR_FLAG_RGB) {
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grid_get_extended_cell(gl, gce, gce->flags);
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gee = grid_extended_cell(gl, gce, &grid_cleared_cell);
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gee->bg = bg;
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} else {
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if (bg & COLOUR_FLAG_256)
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gce->flags |= GRID_FLAG_BG256;
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gce->data.bg = bg;
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}
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}
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}
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/* Check grid y position. */
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static int
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grid_check_y(struct grid *gd, const char *from, u_int py)
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{
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if (py >= gd->hsize + gd->sy) {
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log_debug("%s: y out of range: %u", from, py);
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return (-1);
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}
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return (0);
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}
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/* Check if two styles are (visibly) the same. */
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int
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grid_cells_look_equal(const struct grid_cell *gc1, const struct grid_cell *gc2)
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{
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if (gc1->fg != gc2->fg || gc1->bg != gc2->bg)
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return (0);
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if (gc1->attr != gc2->attr || gc1->flags != gc2->flags)
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return (0);
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return (1);
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}
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/* Compare grid cells. Return 1 if equal, 0 if not. */
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int
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grid_cells_equal(const struct grid_cell *gc1, const struct grid_cell *gc2)
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{
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if (!grid_cells_look_equal(gc1, gc2))
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return (0);
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if (gc1->data.width != gc2->data.width)
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return (0);
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if (gc1->data.size != gc2->data.size)
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return (0);
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return (memcmp(gc1->data.data, gc2->data.data, gc1->data.size) == 0);
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}
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/* Free one line. */
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static void
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grid_free_line(struct grid *gd, u_int py)
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{
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free(gd->linedata[py].celldata);
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gd->linedata[py].celldata = NULL;
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free(gd->linedata[py].extddata);
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gd->linedata[py].extddata = NULL;
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}
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/* Free several lines. */
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static void
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grid_free_lines(struct grid *gd, u_int py, u_int ny)
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{
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u_int yy;
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for (yy = py; yy < py + ny; yy++)
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grid_free_line(gd, yy);
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}
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/* Create a new grid. */
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struct grid *
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grid_create(u_int sx, u_int sy, u_int hlimit)
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{
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struct grid *gd;
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gd = xmalloc(sizeof *gd);
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gd->sx = sx;
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gd->sy = sy;
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if (hlimit != 0)
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gd->flags = GRID_HISTORY;
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else
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gd->flags = 0;
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gd->hscrolled = 0;
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gd->hsize = 0;
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gd->hlimit = hlimit;
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if (gd->sy != 0)
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gd->linedata = xcalloc(gd->sy, sizeof *gd->linedata);
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else
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gd->linedata = NULL;
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return (gd);
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}
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/* Destroy grid. */
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void
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grid_destroy(struct grid *gd)
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{
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grid_free_lines(gd, 0, gd->hsize + gd->sy);
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free(gd->linedata);
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free(gd);
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}
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/* Compare grids. */
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int
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grid_compare(struct grid *ga, struct grid *gb)
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{
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struct grid_line *gla, *glb;
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struct grid_cell gca, gcb;
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u_int xx, yy;
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if (ga->sx != gb->sx || ga->sy != gb->sy)
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return (1);
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for (yy = 0; yy < ga->sy; yy++) {
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gla = &ga->linedata[yy];
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glb = &gb->linedata[yy];
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if (gla->cellsize != glb->cellsize)
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return (1);
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for (xx = 0; xx < gla->cellsize; xx++) {
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grid_get_cell(ga, xx, yy, &gca);
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grid_get_cell(gb, xx, yy, &gcb);
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if (!grid_cells_equal(&gca, &gcb))
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return (1);
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}
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}
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return (0);
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}
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/* Trim lines from the history. */
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static void
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grid_trim_history(struct grid *gd, u_int ny)
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{
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grid_free_lines(gd, 0, ny);
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memmove(&gd->linedata[0], &gd->linedata[ny],
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(gd->hsize + gd->sy - ny) * (sizeof *gd->linedata));
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}
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/*
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* Collect lines from the history if at the limit. Free the top (oldest) 10%
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* and shift up.
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*/
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void
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grid_collect_history(struct grid *gd)
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{
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u_int ny;
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if (gd->hsize == 0 || gd->hsize < gd->hlimit)
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return;
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ny = gd->hlimit / 10;
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if (ny < 1)
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ny = 1;
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if (ny > gd->hsize)
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ny = gd->hsize;
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/*
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* Free the lines from 0 to ny then move the remaining lines over
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* them.
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*/
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grid_trim_history(gd, ny);
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gd->hsize -= ny;
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if (gd->hscrolled > gd->hsize)
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gd->hscrolled = gd->hsize;
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}
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/* Remove lines from the bottom of the history. */
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void
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grid_remove_history(struct grid *gd, u_int ny)
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{
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u_int yy;
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if (ny > gd->hsize)
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return;
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for (yy = 0; yy < ny; yy++)
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grid_free_line(gd, gd->hsize + gd->sy - 1 - yy);
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gd->hsize -= ny;
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}
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/*
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* Scroll the entire visible screen, moving one line into the history. Just
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* allocate a new line at the bottom and move the history size indicator.
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*/
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void
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grid_scroll_history(struct grid *gd, u_int bg)
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{
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u_int yy;
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yy = gd->hsize + gd->sy;
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gd->linedata = xreallocarray(gd->linedata, yy + 1,
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sizeof *gd->linedata);
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grid_empty_line(gd, yy, bg);
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gd->hscrolled++;
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grid_compact_line(&gd->linedata[gd->hsize]);
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gd->hsize++;
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}
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/* Clear the history. */
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void
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grid_clear_history(struct grid *gd)
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{
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grid_trim_history(gd, gd->hsize);
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gd->hscrolled = 0;
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gd->hsize = 0;
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gd->linedata = xreallocarray(gd->linedata, gd->sy,
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sizeof *gd->linedata);
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}
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/* Scroll a region up, moving the top line into the history. */
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void
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grid_scroll_history_region(struct grid *gd, u_int upper, u_int lower, u_int bg)
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{
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struct grid_line *gl_history, *gl_upper;
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u_int yy;
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/* Create a space for a new line. */
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yy = gd->hsize + gd->sy;
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gd->linedata = xreallocarray(gd->linedata, yy + 1,
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sizeof *gd->linedata);
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/* Move the entire screen down to free a space for this line. */
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gl_history = &gd->linedata[gd->hsize];
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memmove(gl_history + 1, gl_history, gd->sy * sizeof *gl_history);
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/* Adjust the region and find its start and end. */
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upper++;
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gl_upper = &gd->linedata[upper];
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lower++;
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/* Move the line into the history. */
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memcpy(gl_history, gl_upper, sizeof *gl_history);
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/* Then move the region up and clear the bottom line. */
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memmove(gl_upper, gl_upper + 1, (lower - upper) * sizeof *gl_upper);
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grid_empty_line(gd, lower, bg);
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/* Move the history offset down over the line. */
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gd->hscrolled++;
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gd->hsize++;
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}
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/* Expand line to fit to cell. */
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static void
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grid_expand_line(struct grid *gd, u_int py, u_int sx, u_int bg)
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{
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struct grid_line *gl;
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u_int xx;
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gl = &gd->linedata[py];
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if (sx <= gl->cellsize)
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return;
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if (sx < gd->sx / 4)
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sx = gd->sx / 4;
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else if (sx < gd->sx / 2)
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sx = gd->sx / 2;
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else
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sx = gd->sx;
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gl->celldata = xreallocarray(gl->celldata, sx, sizeof *gl->celldata);
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for (xx = gl->cellsize; xx < sx; xx++)
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grid_clear_cell(gd, xx, py, bg);
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gl->cellsize = sx;
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}
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/* Empty a line and set background colour if needed. */
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void
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grid_empty_line(struct grid *gd, u_int py, u_int bg)
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{
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memset(&gd->linedata[py], 0, sizeof gd->linedata[py]);
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if (!COLOUR_DEFAULT(bg))
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grid_expand_line(gd, py, gd->sx, bg);
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}
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/* Peek at grid line. */
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const struct grid_line *
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grid_peek_line(struct grid *gd, u_int py)
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{
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if (grid_check_y(gd, __func__, py) != 0)
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return (NULL);
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return (&gd->linedata[py]);
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}
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|
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/* Get cell from line. */
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static void
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grid_get_cell1(struct grid_line *gl, u_int px, struct grid_cell *gc)
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{
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struct grid_cell_entry *gce = &gl->celldata[px];
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struct grid_extd_entry *gee;
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if (gce->flags & GRID_FLAG_EXTENDED) {
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if (gce->offset >= gl->extdsize)
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memcpy(gc, &grid_default_cell, sizeof *gc);
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else {
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gee = &gl->extddata[gce->offset];
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gc->flags = gee->flags;
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gc->attr = gee->attr;
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gc->fg = gee->fg;
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gc->bg = gee->bg;
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gc->us = gee->us;
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utf8_get_big(gee->data, &gc->data);
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}
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return;
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}
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gc->flags = gce->flags & ~(GRID_FLAG_FG256|GRID_FLAG_BG256);
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gc->attr = gce->data.attr;
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gc->fg = gce->data.fg;
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if (gce->flags & GRID_FLAG_FG256)
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gc->fg |= COLOUR_FLAG_256;
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gc->bg = gce->data.bg;
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if (gce->flags & GRID_FLAG_BG256)
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gc->bg |= COLOUR_FLAG_256;
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gc->us = 0;
|
|
utf8_set(&gc->data, gce->data.data);
|
|
}
|
|
|
|
/* Get cell for reading. */
|
|
void
|
|
grid_get_cell(struct grid *gd, u_int px, u_int py, struct grid_cell *gc)
|
|
{
|
|
if (grid_check_y(gd, __func__, py) != 0 ||
|
|
px >= gd->linedata[py].cellsize)
|
|
memcpy(gc, &grid_default_cell, sizeof *gc);
|
|
else
|
|
grid_get_cell1(&gd->linedata[py], px, gc);
|
|
}
|
|
|
|
/* Set cell at relative position. */
|
|
void
|
|
grid_set_cell(struct grid *gd, u_int px, u_int py, const struct grid_cell *gc)
|
|
{
|
|
struct grid_line *gl;
|
|
struct grid_cell_entry *gce;
|
|
|
|
if (grid_check_y(gd, __func__, py) != 0)
|
|
return;
|
|
|
|
grid_expand_line(gd, py, px + 1, 8);
|
|
|
|
gl = &gd->linedata[py];
|
|
if (px + 1 > gl->cellused)
|
|
gl->cellused = px + 1;
|
|
|
|
gce = &gl->celldata[px];
|
|
if (grid_need_extended_cell(gce, gc))
|
|
grid_extended_cell(gl, gce, gc);
|
|
else
|
|
grid_store_cell(gce, gc, gc->data.data[0]);
|
|
}
|
|
|
|
/* Set cells at relative position. */
|
|
void
|
|
grid_set_cells(struct grid *gd, u_int px, u_int py, const struct grid_cell *gc,
|
|
const char *s, size_t slen)
|
|
{
|
|
struct grid_line *gl;
|
|
struct grid_cell_entry *gce;
|
|
struct grid_extd_entry *gee;
|
|
u_int i;
|
|
|
|
if (grid_check_y(gd, __func__, py) != 0)
|
|
return;
|
|
|
|
grid_expand_line(gd, py, px + slen, 8);
|
|
|
|
gl = &gd->linedata[py];
|
|
if (px + slen > gl->cellused)
|
|
gl->cellused = px + slen;
|
|
|
|
for (i = 0; i < slen; i++) {
|
|
gce = &gl->celldata[px + i];
|
|
if (grid_need_extended_cell(gce, gc)) {
|
|
gee = grid_extended_cell(gl, gce, gc);
|
|
gee->data = utf8_set_big(s[i], 1);
|
|
} else
|
|
grid_store_cell(gce, gc, s[i]);
|
|
}
|
|
}
|
|
|
|
/* Clear area. */
|
|
void
|
|
grid_clear(struct grid *gd, u_int px, u_int py, u_int nx, u_int ny, u_int bg)
|
|
{
|
|
struct grid_line *gl;
|
|
u_int xx, yy, ox, sx;
|
|
|
|
if (nx == 0 || ny == 0)
|
|
return;
|
|
|
|
if (px == 0 && nx == gd->sx) {
|
|
grid_clear_lines(gd, py, ny, bg);
|
|
return;
|
|
}
|
|
|
|
if (grid_check_y(gd, __func__, py) != 0)
|
|
return;
|
|
if (grid_check_y(gd, __func__, py + ny - 1) != 0)
|
|
return;
|
|
|
|
for (yy = py; yy < py + ny; yy++) {
|
|
gl = &gd->linedata[yy];
|
|
|
|
sx = gd->sx;
|
|
if (sx > gl->cellsize)
|
|
sx = gl->cellsize;
|
|
ox = nx;
|
|
if (COLOUR_DEFAULT(bg)) {
|
|
if (px > sx)
|
|
continue;
|
|
if (px + nx > sx)
|
|
ox = sx - px;
|
|
}
|
|
|
|
grid_expand_line(gd, yy, px + ox, 8); /* default bg first */
|
|
for (xx = px; xx < px + ox; xx++)
|
|
grid_clear_cell(gd, xx, yy, bg);
|
|
}
|
|
}
|
|
|
|
/* Clear lines. This just frees and truncates the lines. */
|
|
void
|
|
grid_clear_lines(struct grid *gd, u_int py, u_int ny, u_int bg)
|
|
{
|
|
u_int yy;
|
|
|
|
if (ny == 0)
|
|
return;
|
|
|
|
if (grid_check_y(gd, __func__, py) != 0)
|
|
return;
|
|
if (grid_check_y(gd, __func__, py + ny - 1) != 0)
|
|
return;
|
|
|
|
for (yy = py; yy < py + ny; yy++) {
|
|
grid_free_line(gd, yy);
|
|
grid_empty_line(gd, yy, bg);
|
|
}
|
|
}
|
|
|
|
/* Move a group of lines. */
|
|
void
|
|
grid_move_lines(struct grid *gd, u_int dy, u_int py, u_int ny, u_int bg)
|
|
{
|
|
u_int yy;
|
|
|
|
if (ny == 0 || py == dy)
|
|
return;
|
|
|
|
if (grid_check_y(gd, __func__, py) != 0)
|
|
return;
|
|
if (grid_check_y(gd, __func__, py + ny - 1) != 0)
|
|
return;
|
|
if (grid_check_y(gd, __func__, dy) != 0)
|
|
return;
|
|
if (grid_check_y(gd, __func__, dy + ny - 1) != 0)
|
|
return;
|
|
|
|
/* Free any lines which are being replaced. */
|
|
for (yy = dy; yy < dy + ny; yy++) {
|
|
if (yy >= py && yy < py + ny)
|
|
continue;
|
|
grid_free_line(gd, yy);
|
|
}
|
|
|
|
memmove(&gd->linedata[dy], &gd->linedata[py],
|
|
ny * (sizeof *gd->linedata));
|
|
|
|
/*
|
|
* Wipe any lines that have been moved (without freeing them - they are
|
|
* still present).
|
|
*/
|
|
for (yy = py; yy < py + ny; yy++) {
|
|
if (yy < dy || yy >= dy + ny)
|
|
grid_empty_line(gd, yy, bg);
|
|
}
|
|
}
|
|
|
|
/* Move a group of cells. */
|
|
void
|
|
grid_move_cells(struct grid *gd, u_int dx, u_int px, u_int py, u_int nx,
|
|
u_int bg)
|
|
{
|
|
struct grid_line *gl;
|
|
u_int xx;
|
|
|
|
if (nx == 0 || px == dx)
|
|
return;
|
|
|
|
if (grid_check_y(gd, __func__, py) != 0)
|
|
return;
|
|
gl = &gd->linedata[py];
|
|
|
|
grid_expand_line(gd, py, px + nx, 8);
|
|
grid_expand_line(gd, py, dx + nx, 8);
|
|
memmove(&gl->celldata[dx], &gl->celldata[px],
|
|
nx * sizeof *gl->celldata);
|
|
if (dx + nx > gl->cellused)
|
|
gl->cellused = dx + nx;
|
|
|
|
/* Wipe any cells that have been moved. */
|
|
for (xx = px; xx < px + nx; xx++) {
|
|
if (xx >= dx && xx < dx + nx)
|
|
continue;
|
|
grid_clear_cell(gd, xx, py, bg);
|
|
}
|
|
}
|
|
|
|
/* Get ANSI foreground sequence. */
|
|
static size_t
|
|
grid_string_cells_fg(const struct grid_cell *gc, int *values)
|
|
{
|
|
size_t n;
|
|
u_char r, g, b;
|
|
|
|
n = 0;
|
|
if (gc->fg & COLOUR_FLAG_256) {
|
|
values[n++] = 38;
|
|
values[n++] = 5;
|
|
values[n++] = gc->fg & 0xff;
|
|
} else if (gc->fg & COLOUR_FLAG_RGB) {
|
|
values[n++] = 38;
|
|
values[n++] = 2;
|
|
colour_split_rgb(gc->fg, &r, &g, &b);
|
|
values[n++] = r;
|
|
values[n++] = g;
|
|
values[n++] = b;
|
|
} else {
|
|
switch (gc->fg) {
|
|
case 0:
|
|
case 1:
|
|
case 2:
|
|
case 3:
|
|
case 4:
|
|
case 5:
|
|
case 6:
|
|
case 7:
|
|
values[n++] = gc->fg + 30;
|
|
break;
|
|
case 8:
|
|
values[n++] = 39;
|
|
break;
|
|
case 90:
|
|
case 91:
|
|
case 92:
|
|
case 93:
|
|
case 94:
|
|
case 95:
|
|
case 96:
|
|
case 97:
|
|
values[n++] = gc->fg;
|
|
break;
|
|
}
|
|
}
|
|
return (n);
|
|
}
|
|
|
|
/* Get ANSI background sequence. */
|
|
static size_t
|
|
grid_string_cells_bg(const struct grid_cell *gc, int *values)
|
|
{
|
|
size_t n;
|
|
u_char r, g, b;
|
|
|
|
n = 0;
|
|
if (gc->bg & COLOUR_FLAG_256) {
|
|
values[n++] = 48;
|
|
values[n++] = 5;
|
|
values[n++] = gc->bg & 0xff;
|
|
} else if (gc->bg & COLOUR_FLAG_RGB) {
|
|
values[n++] = 48;
|
|
values[n++] = 2;
|
|
colour_split_rgb(gc->bg, &r, &g, &b);
|
|
values[n++] = r;
|
|
values[n++] = g;
|
|
values[n++] = b;
|
|
} else {
|
|
switch (gc->bg) {
|
|
case 0:
|
|
case 1:
|
|
case 2:
|
|
case 3:
|
|
case 4:
|
|
case 5:
|
|
case 6:
|
|
case 7:
|
|
values[n++] = gc->bg + 40;
|
|
break;
|
|
case 8:
|
|
values[n++] = 49;
|
|
break;
|
|
case 90:
|
|
case 91:
|
|
case 92:
|
|
case 93:
|
|
case 94:
|
|
case 95:
|
|
case 96:
|
|
case 97:
|
|
values[n++] = gc->bg + 10;
|
|
break;
|
|
}
|
|
}
|
|
return (n);
|
|
}
|
|
|
|
/*
|
|
* Returns ANSI code to set particular attributes (colour, bold and so on)
|
|
* given a current state.
|
|
*/
|
|
static void
|
|
grid_string_cells_code(const struct grid_cell *lastgc,
|
|
const struct grid_cell *gc, char *buf, size_t len, int escape_c0)
|
|
{
|
|
int oldc[64], newc[64], s[128];
|
|
size_t noldc, nnewc, n, i;
|
|
u_int attr = gc->attr, lastattr = lastgc->attr;
|
|
char tmp[64];
|
|
|
|
struct {
|
|
u_int mask;
|
|
u_int code;
|
|
} attrs[] = {
|
|
{ GRID_ATTR_BRIGHT, 1 },
|
|
{ GRID_ATTR_DIM, 2 },
|
|
{ GRID_ATTR_ITALICS, 3 },
|
|
{ GRID_ATTR_UNDERSCORE, 4 },
|
|
{ GRID_ATTR_BLINK, 5 },
|
|
{ GRID_ATTR_REVERSE, 7 },
|
|
{ GRID_ATTR_HIDDEN, 8 },
|
|
{ GRID_ATTR_STRIKETHROUGH, 9 },
|
|
{ GRID_ATTR_UNDERSCORE_2, 42 },
|
|
{ GRID_ATTR_UNDERSCORE_3, 43 },
|
|
{ GRID_ATTR_UNDERSCORE_4, 44 },
|
|
{ GRID_ATTR_UNDERSCORE_5, 45 },
|
|
{ GRID_ATTR_OVERLINE, 53 },
|
|
};
|
|
n = 0;
|
|
|
|
/* If any attribute is removed, begin with 0. */
|
|
for (i = 0; i < nitems(attrs); i++) {
|
|
if (!(attr & attrs[i].mask) && (lastattr & attrs[i].mask)) {
|
|
s[n++] = 0;
|
|
lastattr &= GRID_ATTR_CHARSET;
|
|
break;
|
|
}
|
|
}
|
|
/* For each attribute that is newly set, add its code. */
|
|
for (i = 0; i < nitems(attrs); i++) {
|
|
if ((attr & attrs[i].mask) && !(lastattr & attrs[i].mask))
|
|
s[n++] = attrs[i].code;
|
|
}
|
|
|
|
/* Write the attributes. */
|
|
*buf = '\0';
|
|
if (n > 0) {
|
|
if (escape_c0)
|
|
strlcat(buf, "\\033[", len);
|
|
else
|
|
strlcat(buf, "\033[", len);
|
|
for (i = 0; i < n; i++) {
|
|
if (s[i] < 10)
|
|
xsnprintf(tmp, sizeof tmp, "%d", s[i]);
|
|
else {
|
|
xsnprintf(tmp, sizeof tmp, "%d:%d", s[i] / 10,
|
|
s[i] % 10);
|
|
}
|
|
strlcat(buf, tmp, len);
|
|
if (i + 1 < n)
|
|
strlcat(buf, ";", len);
|
|
}
|
|
strlcat(buf, "m", len);
|
|
}
|
|
|
|
/* If the foreground colour changed, write its parameters. */
|
|
nnewc = grid_string_cells_fg(gc, newc);
|
|
noldc = grid_string_cells_fg(lastgc, oldc);
|
|
if (nnewc != noldc ||
|
|
memcmp(newc, oldc, nnewc * sizeof newc[0]) != 0 ||
|
|
(n != 0 && s[0] == 0)) {
|
|
if (escape_c0)
|
|
strlcat(buf, "\\033[", len);
|
|
else
|
|
strlcat(buf, "\033[", len);
|
|
for (i = 0; i < nnewc; i++) {
|
|
if (i + 1 < nnewc)
|
|
xsnprintf(tmp, sizeof tmp, "%d;", newc[i]);
|
|
else
|
|
xsnprintf(tmp, sizeof tmp, "%d", newc[i]);
|
|
strlcat(buf, tmp, len);
|
|
}
|
|
strlcat(buf, "m", len);
|
|
}
|
|
|
|
/* If the background colour changed, append its parameters. */
|
|
nnewc = grid_string_cells_bg(gc, newc);
|
|
noldc = grid_string_cells_bg(lastgc, oldc);
|
|
if (nnewc != noldc ||
|
|
memcmp(newc, oldc, nnewc * sizeof newc[0]) != 0 ||
|
|
(n != 0 && s[0] == 0)) {
|
|
if (escape_c0)
|
|
strlcat(buf, "\\033[", len);
|
|
else
|
|
strlcat(buf, "\033[", len);
|
|
for (i = 0; i < nnewc; i++) {
|
|
if (i + 1 < nnewc)
|
|
xsnprintf(tmp, sizeof tmp, "%d;", newc[i]);
|
|
else
|
|
xsnprintf(tmp, sizeof tmp, "%d", newc[i]);
|
|
strlcat(buf, tmp, len);
|
|
}
|
|
strlcat(buf, "m", len);
|
|
}
|
|
|
|
/* Append shift in/shift out if needed. */
|
|
if ((attr & GRID_ATTR_CHARSET) && !(lastattr & GRID_ATTR_CHARSET)) {
|
|
if (escape_c0)
|
|
strlcat(buf, "\\016", len); /* SO */
|
|
else
|
|
strlcat(buf, "\016", len); /* SO */
|
|
}
|
|
if (!(attr & GRID_ATTR_CHARSET) && (lastattr & GRID_ATTR_CHARSET)) {
|
|
if (escape_c0)
|
|
strlcat(buf, "\\017", len); /* SI */
|
|
else
|
|
strlcat(buf, "\017", len); /* SI */
|
|
}
|
|
}
|
|
|
|
/* Convert cells into a string. */
|
|
char *
|
|
grid_string_cells(struct grid *gd, u_int px, u_int py, u_int nx,
|
|
struct grid_cell **lastgc, int with_codes, int escape_c0, int trim)
|
|
{
|
|
struct grid_cell gc;
|
|
static struct grid_cell lastgc1;
|
|
const char *data;
|
|
char *buf, code[128];
|
|
size_t len, off, size, codelen;
|
|
u_int xx;
|
|
const struct grid_line *gl;
|
|
|
|
if (lastgc != NULL && *lastgc == NULL) {
|
|
memcpy(&lastgc1, &grid_default_cell, sizeof lastgc1);
|
|
*lastgc = &lastgc1;
|
|
}
|
|
|
|
len = 128;
|
|
buf = xmalloc(len);
|
|
off = 0;
|
|
|
|
gl = grid_peek_line(gd, py);
|
|
for (xx = px; xx < px + nx; xx++) {
|
|
if (gl == NULL || xx >= gl->cellsize)
|
|
break;
|
|
grid_get_cell(gd, xx, py, &gc);
|
|
if (gc.flags & GRID_FLAG_PADDING)
|
|
continue;
|
|
|
|
if (with_codes) {
|
|
grid_string_cells_code(*lastgc, &gc, code, sizeof code,
|
|
escape_c0);
|
|
codelen = strlen(code);
|
|
memcpy(*lastgc, &gc, sizeof **lastgc);
|
|
} else
|
|
codelen = 0;
|
|
|
|
data = gc.data.data;
|
|
size = gc.data.size;
|
|
if (escape_c0 && size == 1 && *data == '\\') {
|
|
data = "\\\\";
|
|
size = 2;
|
|
}
|
|
|
|
while (len < off + size + codelen + 1) {
|
|
buf = xreallocarray(buf, 2, len);
|
|
len *= 2;
|
|
}
|
|
|
|
if (codelen != 0) {
|
|
memcpy(buf + off, code, codelen);
|
|
off += codelen;
|
|
}
|
|
memcpy(buf + off, data, size);
|
|
off += size;
|
|
}
|
|
|
|
if (trim) {
|
|
while (off > 0 && buf[off - 1] == ' ')
|
|
off--;
|
|
}
|
|
buf[off] = '\0';
|
|
|
|
return (buf);
|
|
}
|
|
|
|
/*
|
|
* Duplicate a set of lines between two grids. Both source and destination
|
|
* should be big enough.
|
|
*/
|
|
void
|
|
grid_duplicate_lines(struct grid *dst, u_int dy, struct grid *src, u_int sy,
|
|
u_int ny)
|
|
{
|
|
struct grid_line *dstl, *srcl;
|
|
u_int yy;
|
|
|
|
if (dy + ny > dst->hsize + dst->sy)
|
|
ny = dst->hsize + dst->sy - dy;
|
|
if (sy + ny > src->hsize + src->sy)
|
|
ny = src->hsize + src->sy - sy;
|
|
grid_free_lines(dst, dy, ny);
|
|
|
|
for (yy = 0; yy < ny; yy++) {
|
|
srcl = &src->linedata[sy];
|
|
dstl = &dst->linedata[dy];
|
|
|
|
memcpy(dstl, srcl, sizeof *dstl);
|
|
if (srcl->cellsize != 0) {
|
|
dstl->celldata = xreallocarray(NULL,
|
|
srcl->cellsize, sizeof *dstl->celldata);
|
|
memcpy(dstl->celldata, srcl->celldata,
|
|
srcl->cellsize * sizeof *dstl->celldata);
|
|
} else
|
|
dstl->celldata = NULL;
|
|
|
|
if (srcl->extdsize != 0) {
|
|
dstl->extdsize = srcl->extdsize;
|
|
dstl->extddata = xreallocarray(NULL, dstl->extdsize,
|
|
sizeof *dstl->extddata);
|
|
memcpy(dstl->extddata, srcl->extddata, dstl->extdsize *
|
|
sizeof *dstl->extddata);
|
|
}
|
|
|
|
sy++;
|
|
dy++;
|
|
}
|
|
}
|
|
|
|
/* Mark line as dead. */
|
|
static void
|
|
grid_reflow_dead(struct grid_line *gl)
|
|
{
|
|
memset(gl, 0, sizeof *gl);
|
|
gl->flags = GRID_LINE_DEAD;
|
|
}
|
|
|
|
/* Add lines, return the first new one. */
|
|
static struct grid_line *
|
|
grid_reflow_add(struct grid *gd, u_int n)
|
|
{
|
|
struct grid_line *gl;
|
|
u_int sy = gd->sy + n;
|
|
|
|
gd->linedata = xreallocarray(gd->linedata, sy, sizeof *gd->linedata);
|
|
gl = &gd->linedata[gd->sy];
|
|
memset(gl, 0, n * (sizeof *gl));
|
|
gd->sy = sy;
|
|
return (gl);
|
|
}
|
|
|
|
/* Move a line across. */
|
|
static struct grid_line *
|
|
grid_reflow_move(struct grid *gd, struct grid_line *from)
|
|
{
|
|
struct grid_line *to;
|
|
|
|
to = grid_reflow_add(gd, 1);
|
|
memcpy(to, from, sizeof *to);
|
|
grid_reflow_dead(from);
|
|
return (to);
|
|
}
|
|
|
|
/* Join line below onto this one. */
|
|
static void
|
|
grid_reflow_join(struct grid *target, struct grid *gd, u_int sx, u_int yy,
|
|
u_int width, int already)
|
|
{
|
|
struct grid_line *gl, *from = NULL;
|
|
struct grid_cell gc;
|
|
u_int lines, left, i, to, line, want = 0;
|
|
u_int at;
|
|
int wrapped = 1;
|
|
|
|
/*
|
|
* Add a new target line.
|
|
*/
|
|
if (!already) {
|
|
to = target->sy;
|
|
gl = grid_reflow_move(target, &gd->linedata[yy]);
|
|
} else {
|
|
to = target->sy - 1;
|
|
gl = &target->linedata[to];
|
|
}
|
|
at = gl->cellused;
|
|
|
|
/*
|
|
* Loop until no more to consume or the target line is full.
|
|
*/
|
|
lines = 0;
|
|
for (;;) {
|
|
/*
|
|
* If this is now the last line, there is nothing more to be
|
|
* done.
|
|
*/
|
|
if (yy + 1 + lines == gd->hsize + gd->sy)
|
|
break;
|
|
line = yy + 1 + lines;
|
|
|
|
/* If the next line is empty, skip it. */
|
|
if (~gd->linedata[line].flags & GRID_LINE_WRAPPED)
|
|
wrapped = 0;
|
|
if (gd->linedata[line].cellused == 0) {
|
|
if (!wrapped)
|
|
break;
|
|
lines++;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Is the destination line now full? Copy the first character
|
|
* separately because we need to leave "from" set to the last
|
|
* line if this line is full.
|
|
*/
|
|
grid_get_cell1(&gd->linedata[line], 0, &gc);
|
|
if (width + gc.data.width > sx)
|
|
break;
|
|
width += gc.data.width;
|
|
grid_set_cell(target, at, to, &gc);
|
|
at++;
|
|
|
|
/* Join as much more as possible onto the current line. */
|
|
from = &gd->linedata[line];
|
|
for (want = 1; want < from->cellused; want++) {
|
|
grid_get_cell1(from, want, &gc);
|
|
if (width + gc.data.width > sx)
|
|
break;
|
|
width += gc.data.width;
|
|
|
|
grid_set_cell(target, at, to, &gc);
|
|
at++;
|
|
}
|
|
lines++;
|
|
|
|
/*
|
|
* If this line wasn't wrapped or we didn't consume the entire
|
|
* line, don't try to join any further lines.
|
|
*/
|
|
if (!wrapped || want != from->cellused || width == sx)
|
|
break;
|
|
}
|
|
if (lines == 0)
|
|
return;
|
|
|
|
/*
|
|
* If we didn't consume the entire final line, then remove what we did
|
|
* consume. If we consumed the entire line and it wasn't wrapped,
|
|
* remove the wrap flag from this line.
|
|
*/
|
|
left = from->cellused - want;
|
|
if (left != 0) {
|
|
grid_move_cells(gd, 0, want, yy + lines, left, 8);
|
|
from->cellsize = from->cellused = left;
|
|
lines--;
|
|
} else if (!wrapped)
|
|
gl->flags &= ~GRID_LINE_WRAPPED;
|
|
|
|
/* Remove the lines that were completely consumed. */
|
|
for (i = yy + 1; i < yy + 1 + lines; i++) {
|
|
free(gd->linedata[i].celldata);
|
|
free(gd->linedata[i].extddata);
|
|
grid_reflow_dead(&gd->linedata[i]);
|
|
}
|
|
|
|
/* Adjust scroll position. */
|
|
if (gd->hscrolled > to + lines)
|
|
gd->hscrolled -= lines;
|
|
else if (gd->hscrolled > to)
|
|
gd->hscrolled = to;
|
|
}
|
|
|
|
/* Split this line into several new ones */
|
|
static void
|
|
grid_reflow_split(struct grid *target, struct grid *gd, u_int sx, u_int yy,
|
|
u_int at)
|
|
{
|
|
struct grid_line *gl = &gd->linedata[yy], *first;
|
|
struct grid_cell gc;
|
|
u_int line, lines, width, i, xx;
|
|
u_int used = gl->cellused;
|
|
int flags = gl->flags;
|
|
|
|
/* How many lines do we need to insert? We know we need at least two. */
|
|
if (~gl->flags & GRID_LINE_EXTENDED)
|
|
lines = 1 + (gl->cellused - 1) / sx;
|
|
else {
|
|
lines = 2;
|
|
width = 0;
|
|
for (i = at; i < used; i++) {
|
|
grid_get_cell1(gl, i, &gc);
|
|
if (width + gc.data.width > sx) {
|
|
lines++;
|
|
width = 0;
|
|
}
|
|
width += gc.data.width;
|
|
}
|
|
}
|
|
|
|
/* Insert new lines. */
|
|
line = target->sy + 1;
|
|
first = grid_reflow_add(target, lines);
|
|
|
|
/* Copy sections from the original line. */
|
|
width = 0;
|
|
xx = 0;
|
|
for (i = at; i < used; i++) {
|
|
grid_get_cell1(gl, i, &gc);
|
|
if (width + gc.data.width > sx) {
|
|
target->linedata[line].flags |= GRID_LINE_WRAPPED;
|
|
|
|
line++;
|
|
width = 0;
|
|
xx = 0;
|
|
}
|
|
width += gc.data.width;
|
|
grid_set_cell(target, xx, line, &gc);
|
|
xx++;
|
|
}
|
|
if (flags & GRID_LINE_WRAPPED)
|
|
target->linedata[line].flags |= GRID_LINE_WRAPPED;
|
|
|
|
/* Move the remainder of the original line. */
|
|
gl->cellsize = gl->cellused = at;
|
|
gl->flags |= GRID_LINE_WRAPPED;
|
|
memcpy(first, gl, sizeof *first);
|
|
grid_reflow_dead(gl);
|
|
|
|
/* Adjust the scroll position. */
|
|
if (yy <= gd->hscrolled)
|
|
gd->hscrolled += lines - 1;
|
|
|
|
/*
|
|
* If the original line had the wrapped flag and there is still space
|
|
* in the last new line, try to join with the next lines.
|
|
*/
|
|
if (width < sx && (flags & GRID_LINE_WRAPPED))
|
|
grid_reflow_join(target, gd, sx, yy, width, 1);
|
|
}
|
|
|
|
/* Reflow lines on grid to new width. */
|
|
void
|
|
grid_reflow(struct grid *gd, u_int sx)
|
|
{
|
|
struct grid *target;
|
|
struct grid_line *gl;
|
|
struct grid_cell gc;
|
|
u_int yy, width, i, at, first;
|
|
|
|
/*
|
|
* Create a destination grid. This is just used as a container for the
|
|
* line data and may not be fully valid.
|
|
*/
|
|
target = grid_create(gd->sx, 0, 0);
|
|
|
|
/*
|
|
* Loop over each source line.
|
|
*/
|
|
for (yy = 0; yy < gd->hsize + gd->sy; yy++) {
|
|
gl = &gd->linedata[yy];
|
|
if (gl->flags & GRID_LINE_DEAD)
|
|
continue;
|
|
|
|
/*
|
|
* Work out the width of this line. first is the width of the
|
|
* first character, at is the point at which the available
|
|
* width is hit, and width is the full line width.
|
|
*/
|
|
first = at = width = 0;
|
|
if (~gl->flags & GRID_LINE_EXTENDED) {
|
|
first = 1;
|
|
width = gl->cellused;
|
|
if (width > sx)
|
|
at = sx;
|
|
else
|
|
at = width;
|
|
} else {
|
|
for (i = 0; i < gl->cellused; i++) {
|
|
grid_get_cell1(gl, i, &gc);
|
|
if (i == 0)
|
|
first = gc.data.width;
|
|
if (at == 0 && width + gc.data.width > sx)
|
|
at = i;
|
|
width += gc.data.width;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If the line is exactly right or the first character is wider
|
|
* than the target width, just move it across unchanged.
|
|
*/
|
|
if (width == sx || first > sx) {
|
|
grid_reflow_move(target, gl);
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* If the line is too big, it needs to be split, whether or not
|
|
* it was previously wrapped.
|
|
*/
|
|
if (width > sx) {
|
|
grid_reflow_split(target, gd, sx, yy, at);
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* If the line was previously wrapped, join as much as possible
|
|
* of the next line.
|
|
*/
|
|
if (gl->flags & GRID_LINE_WRAPPED)
|
|
grid_reflow_join(target, gd, sx, yy, width, 0);
|
|
else
|
|
grid_reflow_move(target, gl);
|
|
}
|
|
|
|
/*
|
|
* Replace the old grid with the new.
|
|
*/
|
|
if (target->sy < gd->sy)
|
|
grid_reflow_add(target, gd->sy - target->sy);
|
|
gd->hsize = target->sy - gd->sy;
|
|
if (gd->hscrolled > gd->hsize)
|
|
gd->hscrolled = gd->hsize;
|
|
free(gd->linedata);
|
|
gd->linedata = target->linedata;
|
|
free(target);
|
|
}
|
|
|
|
/* Convert to position based on wrapped lines. */
|
|
void
|
|
grid_wrap_position(struct grid *gd, u_int px, u_int py, u_int *wx, u_int *wy)
|
|
{
|
|
u_int ax = 0, ay = 0, yy;
|
|
|
|
for (yy = 0; yy < py; yy++) {
|
|
if (gd->linedata[yy].flags & GRID_LINE_WRAPPED)
|
|
ax += gd->linedata[yy].cellused;
|
|
else {
|
|
ax = 0;
|
|
ay++;
|
|
}
|
|
}
|
|
if (px >= gd->linedata[yy].cellused)
|
|
ax = UINT_MAX;
|
|
else
|
|
ax += px;
|
|
*wx = ax;
|
|
*wy = ay;
|
|
}
|
|
|
|
/* Convert position based on wrapped lines back. */
|
|
void
|
|
grid_unwrap_position(struct grid *gd, u_int *px, u_int *py, u_int wx, u_int wy)
|
|
{
|
|
u_int yy, ay = 0;
|
|
|
|
for (yy = 0; yy < gd->hsize + gd->sy - 1; yy++) {
|
|
if (ay == wy)
|
|
break;
|
|
if (~gd->linedata[yy].flags & GRID_LINE_WRAPPED)
|
|
ay++;
|
|
}
|
|
|
|
/*
|
|
* yy is now 0 on the unwrapped line which contains wx. Walk forwards
|
|
* until we find the end or the line now containing wx.
|
|
*/
|
|
if (wx == UINT_MAX) {
|
|
while (gd->linedata[yy].flags & GRID_LINE_WRAPPED)
|
|
yy++;
|
|
wx = gd->linedata[yy].cellused;
|
|
} else {
|
|
while (gd->linedata[yy].flags & GRID_LINE_WRAPPED) {
|
|
if (wx < gd->linedata[yy].cellused)
|
|
break;
|
|
wx -= gd->linedata[yy].cellused;
|
|
yy++;
|
|
}
|
|
}
|
|
*px = wx;
|
|
*py = yy;
|
|
}
|
|
|
|
/* Get length of line. */
|
|
u_int
|
|
grid_line_length(struct grid *gd, u_int py)
|
|
{
|
|
struct grid_cell gc;
|
|
u_int px;
|
|
|
|
px = grid_get_line(gd, py)->cellsize;
|
|
if (px > gd->sx)
|
|
px = gd->sx;
|
|
while (px > 0) {
|
|
grid_get_cell(gd, px - 1, py, &gc);
|
|
if ((gc.flags & GRID_FLAG_PADDING) ||
|
|
gc.data.size != 1 ||
|
|
*gc.data.data != ' ')
|
|
break;
|
|
px--;
|
|
}
|
|
return (px);
|
|
}
|