Terminal emulator with all the bells and whistles https://www.enlightenment.org
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#include "private.h"
#include <Elementary.h>
#include "termio.h"
#include "termpty.h"
#include "termptydbl.h"
#include "termptyops.h"
#include "termptygfx.h"
#include "termptysave.h"
#include "miniview.h"
#include <assert.h>
#undef CRITICAL
#undef ERR
#undef WRN
#undef INF
#undef DBG
#define CRITICAL(...) EINA_LOG_DOM_CRIT(_termpty_log_dom, __VA_ARGS__)
#define ERR(...) EINA_LOG_DOM_ERR(_termpty_log_dom, __VA_ARGS__)
#define WRN(...) EINA_LOG_DOM_WARN(_termpty_log_dom, __VA_ARGS__)
#define INF(...) EINA_LOG_DOM_INFO(_termpty_log_dom, __VA_ARGS__)
#define DBG(...) EINA_LOG_DOM_DBG(_termpty_log_dom, __VA_ARGS__)
void
termpty_cells_clear(Termpty *ty, Termcell *cells, int count)
{
Termcell src;
memset(&src, 0, sizeof(src));
src.codepoint = 0;
src.att = ty->termstate.att;
src.att.link_id = 0;
termpty_cell_fill(ty, &src, cells, count);
}
void
termpty_text_scroll(Termpty *ty, Eina_Bool clear)
{
Termcell *cells = NULL, *cells2;
int y, start_y = 0, end_y = ty->h - 1;
start_y = ty->termstate.top_margin;
if (ty->termstate.bottom_margin != 0)
end_y = ty->termstate.bottom_margin - 1;
if (!(ty->termstate.top_margin || ty->termstate.bottom_margin ||
ty->termstate.left_margin || ty->termstate.right_margin) &&
(!ty->altbuf))
termpty_text_save_top(ty, &(TERMPTY_SCREEN(ty, 0, 0)), ty->w);
termio_scroll(ty->obj, -1, start_y, end_y);
DBG("... scroll!!!!! [%i->%i]", start_y, end_y);
if ((start_y == 0 && end_y == ty->h - 1) &&
(ty->termstate.left_margin == 0) &&
(ty->termstate.right_margin == 0))
{
// screen is a circular buffer now
cells = &(ty->screen[ty->circular_offset * ty->w]);
if (clear)
termpty_cells_clear(ty, cells, ty->w);
ty->circular_offset++;
if (ty->circular_offset >= ty->h)
ty->circular_offset = 0;
}
else
{
int x = ty->termstate.left_margin;
int w = ty->w - x;
if (ty->termstate.right_margin)
w = ty->termstate.right_margin - x;
cells = &(TERMPTY_SCREEN(ty, x, end_y));
for (y = start_y; y < end_y; y++)
{
cells = &(TERMPTY_SCREEN(ty, x, (y + 1)));
cells2 = &(TERMPTY_SCREEN(ty, x, y));
TERMPTY_CELL_COPY(ty, cells, cells2, w);
}
if (clear)
termpty_cells_clear(ty, cells, w);
}
}
void
termpty_text_scroll_rev(Termpty *ty, Eina_Bool clear)
{
Termcell *cells, *cells2 = NULL;
int y, start_y = 0, end_y = ty->h - 1;
if (ty->termstate.bottom_margin != 0)
{
start_y = ty->termstate.top_margin;
end_y = ty->termstate.bottom_margin - 1;
}
DBG("... scroll rev!!!!! [%i->%i]", start_y, end_y);
termio_scroll(ty->obj, 1, start_y, end_y);
if ((start_y == 0 && end_y == (ty->h - 1)) &&
(ty->termstate.left_margin == 0) &&
(ty->termstate.right_margin == 0))
{
// screen is a circular buffer now
ty->circular_offset--;
if (ty->circular_offset < 0)
ty->circular_offset = ty->h - 1;
cells = &(ty->screen[ty->circular_offset * ty->w]);
if (clear)
termpty_cells_clear(ty, cells, ty->w);
}
else
{
int x = ty->termstate.left_margin;
int w = ty->w - x;
if (ty->termstate.right_margin)
w = ty->termstate.right_margin - x;
cells = &(TERMPTY_SCREEN(ty, x, end_y));
for (y = end_y; y > start_y; y--)
{
cells = &(TERMPTY_SCREEN(ty, x, (y - 1)));
cells2 = &(TERMPTY_SCREEN(ty, x, y));
TERMPTY_CELL_COPY(ty, cells, cells2, w);
}
if (clear)
termpty_cells_clear(ty, cells, w);
}
}
void
termpty_text_scroll_test(Termpty *ty, Eina_Bool clear)
{
int e = ty->h;
if (ty->termstate.bottom_margin != 0)
{
e = ty->termstate.bottom_margin;
if (ty->cursor_state.cy == e)
{
termpty_text_scroll(ty, clear);
ty->cursor_state.cy = e - 1;
TERMPTY_RESTRICT_FIELD(ty->cursor_state.cy, 0, ty->h);
return;
}
}
if (ty->cursor_state.cy >= ty->h)
{
termpty_text_scroll(ty, clear);
ty->cursor_state.cy = e - 1;
TERMPTY_RESTRICT_FIELD(ty->cursor_state.cy, 0, ty->h);
}
}
void
termpty_text_scroll_rev_test(Termpty *ty, Eina_Bool clear)
{
int b = 0;
if (ty->termstate.top_margin != 0)
b = ty->termstate.top_margin;
if (ty->cursor_state.cy < b)
{
termpty_text_scroll_rev(ty, clear);
ty->cursor_state.cy = b;
TERMPTY_RESTRICT_FIELD(ty->cursor_state.cy, 0, ty->h);
}
}
void
termpty_text_append(Termpty *ty, const Eina_Unicode *codepoints, int len)
{
Termcell *cells;
int i, j;
int origin = ty->termstate.left_margin;
cells = &(TERMPTY_SCREEN(ty, 0, ty->cursor_state.cy));
for (i = 0; i < len; i++)
{
int max_right = ty->w;
Eina_Unicode g;
if (ty->termstate.right_margin &&
(ty->cursor_state.cx < ty->termstate.right_margin))
{
max_right = ty->termstate.right_margin;
}
if (ty->termstate.wrapnext)
{
cells[max_right-1].att.autowrapped = 1;
ty->termstate.wrapnext = 0;
ty->cursor_state.cx = origin;
ty->cursor_state.cy++;
termpty_text_scroll_test(ty, EINA_TRUE);
cells = &(TERMPTY_SCREEN(ty, 0, ty->cursor_state.cy));
}
if (ty->termstate.insert)
{
for (j = max_right-1; j > ty->cursor_state.cx; j--)
TERMPTY_CELL_COPY(ty, &(cells[j - 1]), &(cells[j]), 1);
}
5 years ago
g = _termpty_charset_trans(ty, codepoints[i]);
/* Skip 0-width space or RTL/LTR marks */
if (EINA_UNLIKELY(g >= 0x200b && g <= 0x200f))
{
continue;
}
/* Skip variation selectors */
if (EINA_UNLIKELY(g >= 0xfe00 && g <= 0xfe0f))
{
continue;
}
if (EINA_UNLIKELY(g >= 0x300 && g <=0x36f))
{
/* combining chars */
if (EINA_UNLIKELY(g == 0x336))
{
ty->termstate.combining_strike = 1;
}
continue;
}
termpty_cell_codepoint_att_fill(ty, g, ty->termstate.att,
&(cells[ty->cursor_state.cx]), 1);
if (EINA_UNLIKELY(ty->termstate.combining_strike))
{
ty->termstate.combining_strike = 0;
cells[ty->cursor_state.cx].att.strike = 1;
}
cells[ty->cursor_state.cx].att.dblwidth = _termpty_is_dblwidth_get(ty, g);
if (EINA_UNLIKELY((cells[ty->cursor_state.cx].att.dblwidth) && (ty->cursor_state.cx < (max_right - 1))))
{
cells[ty->cursor_state.cx].att.newline = 0;
termpty_cell_codepoint_att_fill(ty, 0, cells[ty->cursor_state.cx].att,
&(cells[ty->cursor_state.cx + 1]), 1);
}
if (ty->termstate.wrap)
{
unsigned char offset = 1;
ty->termstate.wrapnext = 0;
if (EINA_UNLIKELY(cells[ty->cursor_state.cx].att.dblwidth))
offset = 2;
if (EINA_UNLIKELY(ty->cursor_state.cx >= (max_right - offset)))
ty->termstate.wrapnext = 1;
else
{
ty->cursor_state.cx += offset;
TERMPTY_RESTRICT_FIELD(ty->cursor_state.cx, 0, max_right);
}
}
else
{
unsigned char offset = 1;
ty->termstate.wrapnext = 0;
if (EINA_UNLIKELY(cells[ty->cursor_state.cx].att.dblwidth))
offset = 2;
ty->cursor_state.cx += offset;
if (ty->cursor_state.cx > (max_right - offset))
{
ty->cursor_state.cx = max_right - offset;
TERMPTY_RESTRICT_FIELD(ty->cursor_state.cx, 0, max_right);
}
TERMPTY_RESTRICT_FIELD(ty->cursor_state.cx, 0, max_right);
}
}
}
void
termpty_clear_line(Termpty *ty, Termpty_Clear mode, int limit)
{
Termcell *cells;
int n = 0;
Evas_Coord x = 0, y = ty->cursor_state.cy;
assert (y >= 0 && y < ty->h);
switch (mode)
{
case TERMPTY_CLR_END:
n = ty->w - ty->cursor_state.cx;
x = ty->cursor_state.cx;
break;
case TERMPTY_CLR_BEGIN:
n = ty->cursor_state.cx + 1;
break;
case TERMPTY_CLR_ALL:
n = ty->w;
break;
default:
return;
}
cells = &(TERMPTY_SCREEN(ty, x, y));
if (n > limit)
n = limit;
termpty_cells_clear(ty, cells, n);
}
void
termpty_clear_tabs_on_screen(Termpty *ty)
{
if (ty->tabs)
{
memset(ty->tabs, 0,
DIV_ROUND_UP(ty->w, sizeof(unsigned int) * 8u)
* sizeof(unsigned int));
}
}
void
termpty_clear_backlog(Termpty *ty)
{
int backsize;
ty->backlog_beacon.screen_y = 0;
ty->backlog_beacon.backlog_y = 0;
termpty_backlog_lock();
if (ty->back)
{
size_t i;
for (i = 0; i < ty->backsize; i++)
termpty_save_free(ty, &ty->back[i]);
free(ty->back);
ty->back = NULL;
}
ty->backpos = 0;
backsize = ty->backsize;
ty->backsize = 0;
termpty_backlog_size_set(ty, backsize);
termpty_backlog_unlock();
}
void
termpty_clear_screen(Termpty *ty, Termpty_Clear mode)
{
Termcell *cells;
switch (mode)
{
case TERMPTY_CLR_END:
termpty_clear_line(ty, mode, ty->w);
if (ty->cursor_state.cy < (ty->h - 1))
{
int l = ty->h - (ty->cursor_state.cy + 1);
while (l)
{
cells = &(TERMPTY_SCREEN(ty, 0, (ty->cursor_state.cy + l)));
termpty_cells_clear(ty, cells, ty->w);
l--;
}
}
break;
case TERMPTY_CLR_BEGIN:
if (ty->cursor_state.cy > 0)
{
// First clear from circular > height, then from 0 to circular
int y = ty->cursor_state.cy + ty->circular_offset;
cells = &(TERMPTY_SCREEN(ty, 0, 0));
if (y < ty->h)
{
termpty_cells_clear(ty, cells, ty->w * ty->cursor_state.cy);
}
else
{
int yt = y % ty->h;
int yb = ty->h - ty->circular_offset;
termpty_cells_clear(ty, cells, ty->w * yb);
termpty_cells_clear(ty, ty->screen, ty->w * yt);
}
}
termpty_clear_line(ty, mode, ty->w);
break;
case TERMPTY_CLR_ALL:
ty->circular_offset = 0;
termpty_cells_clear(ty, ty->screen, ty->w * ty->h);
if (ty->cb.cancel_sel.func)
ty->cb.cancel_sel.func(ty->cb.cancel_sel.data);
break;
default:
break;
}
}
void
termpty_clear_all(Termpty *ty)
{
if (!ty->screen) return;
termpty_cell_fill(ty, NULL, ty->screen, ty->w * ty->h);
}
void
termpty_reset_att(Termatt *att)
{
att->fg = COL_DEF;
att->bg = COL_DEF;
att->bold = 0;
att->faint = 0;
att->italic = 0;
att->dblwidth = 0;
att->underline = 0;
att->blink = 0;
att->blink2 = 0;
att->inverse = 0;
att->invisible = 0;
att->strike = 0;
att->fg256 = 0;
att->bg256 = 0;
att->fgintense = 0;
att->bgintense = 0;
att->autowrapped = 0;
att->newline = 0;
att->fraktur = 0;
att->framed = 0;
att->encircled = 0;
att->overlined = 0;
att->tab_inserted = 0;
att->tab_last = 0;
}
void
termpty_soft_reset_state(Termpty *ty)
{
int i;
Config *config = NULL;
if (ty->obj)
config = termio_config_get(ty->obj);
ty->termstate.top_margin = 0;
ty->termstate.bottom_margin = 0;
ty->termstate.left_margin = 0;
ty->termstate.right_margin = 0;
ty->termstate.lr_margins = 0;
ty->termstate.had_cr_x = 0;
ty->termstate.had_cr_y = 0;
ty->termstate.restrict_cursor = 0;
termpty_reset_att(&(ty->termstate.att));
ty->termstate.att.link_id = 0;
ty->termstate.charset = 0;
ty->termstate.charsetch = 'B';
ty->termstate.chset[0] = 'B';
ty->termstate.chset[1] = 'B';
ty->termstate.chset[2] = 'B';
ty->termstate.chset[3] = 'B';
ty->termstate.multibyte = 0;
ty->termstate.alt_kp = 0;
ty->termstate.insert = 0;
ty->termstate.appcursor = 0;
ty->termstate.wrap = 1;
ty->termstate.wrapnext = 0;
ty->termstate.crlf = 0;
ty->termstate.send_bs = 0;
ty->termstate.reverse = 0;
ty->termstate.no_autorepeat = 0;
ty->termstate.cjk_ambiguous_wide = 0;
ty->termstate.hide_cursor = 0;
ty->termstate.sace_rectangular = 0;
ty->mouse_mode = MOUSE_OFF;
ty->mouse_ext = MOUSE_EXT_NONE;
ty->bracketed_paste = 0;
termpty_clear_tabs_on_screen(ty);
for (i = 0; i < ty->w; i += TAB_WIDTH)
{
TAB_SET(ty, i);
}
if (config && ty->obj)
termio_set_cursor_shape(ty->obj, config->cursor_shape);
}
void
termpty_reset_state(Termpty *ty)
{
termpty_soft_reset_state(ty);
ty->cursor_state.cx = 0;
ty->cursor_state.cy = 0;
termpty_clear_backlog(ty);
}
void
termpty_cursor_copy(Termpty *ty, Eina_Bool save)
{
if (save)
{
ty->cursor_save[ty->altbuf].cx = ty->cursor_state.cx;
ty->cursor_save[ty->altbuf].cy = ty->cursor_state.cy;
}
else
{
ty->cursor_state.cx = ty->cursor_save[ty->altbuf].cx;
TERMPTY_RESTRICT_FIELD(ty->cursor_state.cx, 0, ty->w);
ty->cursor_state.cy = ty->cursor_save[ty->altbuf].cy;
TERMPTY_RESTRICT_FIELD(ty->cursor_state.cy, 0, ty->h);
}
}
void
termpty_move_cursor(Termpty *ty, int cx, int cy)
{
int cur_cx = ty->cursor_state.cx;
int cur_cy = ty->cursor_state.cy;
Termcell *cells;
ssize_t wlen;
int n_to_down = 0;
int n_to_right = 0;
/* move Up or Down */
while (cur_cy != cy)
{
if (cur_cy < cy)
{
/* go down */
cells = termpty_cellrow_get(ty, cur_cy, &wlen);
assert(cells);
if (cells[wlen-1].att.autowrapped)
{
n_to_right += ty->w;
}
else
{
n_to_down++;
}
cur_cy++;
}
else
{
/* go up */
cells = termpty_cellrow_get(ty, cur_cy - 1, &wlen);
assert(cells);
if (cells[wlen-1].att.autowrapped)
{
n_to_right -= ty->w;
}
else
{
n_to_down--;
}
cur_cy--;
}
}
n_to_right += cx - cur_cx;
/* right */
for (; n_to_right > 0; n_to_right--)
termpty_write(ty, "\033[C", strlen("\033[C"));
/* left */
for (; n_to_right < 0; n_to_right++)
termpty_write(ty, "\033[D", strlen("\033[D"));
/* down*/
for (; n_to_down > 0; n_to_down--)
termpty_write(ty, "\033[B", strlen("\033[B"));
/* up */
for (; n_to_down < 0; n_to_down++)
termpty_write(ty, "\033[A", strlen("\033[A"));
}