mainnika
/
weston
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Implement a bunch of escape codes.

Browse Source 
Bash command line editing and gdb is pretty much there.  Emacs, vi and even less
need more work.
Kristian Høgsberg 16 years ago
parent 73f4e760a2
commit dbd54640f4
1 changed files with 120 additions and 48 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 164
      terminal.c

164
terminal.c
Unescape View File

@ -55,7 +55,7 @@ struct terminal {
struct wl_display *display;
int redraw_scheduled, redraw_pending;
char *data;
int width, height, tail, row, column, total_rows;
int width, height, start, row, column;
int fd, master;
struct buffer *buffer;
GIOChannel *channel;
@ -66,12 +66,22 @@ struct terminal {
int margin;
};
static char *
terminal_get_row(struct terminal *terminal, int row)
{
int index;
index = (row + terminal->start) % terminal->height;
return &terminal->data[index * (terminal->width + 1)];
}
static void
terminal_resize(struct terminal *terminal, int width, int height)
{
size_t size;
char *data;
int i, l, total_rows, row, tail;
int i, l, total_rows, start;
if (terminal->width == width && terminal->height == height)
return;
@ -85,34 +95,30 @@ terminal_resize(struct terminal *terminal, int width, int height)
else
l = width;
if (terminal->total_rows > height) {
if (terminal->height > height) {
total_rows = height;
tail = terminal->tail + terminal->total_rows - height;
start = terminal->height - height;
} else {
total_rows = terminal->total_rows;
tail = terminal->tail;
total_rows = terminal->height;
start = 0;
}
for (i = 0; i < total_rows; i++) {
row = (tail + i) % terminal->height;
for (i = 0; i < total_rows; i++)
memcpy(data + (width + 1) * i,
&terminal->data[row * (terminal->width + 1)], l);
}
terminal_get_row(terminal, i), l);
free(terminal->data);
} else {
total_rows = 1;
}
terminal->width = width;
terminal->height = height;
terminal->data = data;
terminal->total_rows = total_rows;
terminal->row = total_rows - 1;
if (terminal->row >= terminal->height)
terminal->row = terminal->height - 1;
if (terminal->column >= terminal->width)
terminal->column = terminal->width - 1;
terminal->tail = 0;
terminal->start = 0;
}
static void
@ -122,7 +128,7 @@ terminal_draw_contents(struct terminal *terminal)
cairo_surface_t *surface;
cairo_t *cr;
cairo_font_extents_t extents;
int i, row;
int i;
window_get_child_rectangle(terminal->window, &rectangle);
@ -141,11 +147,10 @@ terminal_draw_contents(struct terminal *terminal)
cairo_set_font_size(cr, 14);
cairo_font_extents(cr, &extents);
for (i = 0; i < terminal->total_rows; i++) {
row = (terminal->tail + i) % terminal->height;
for (i = 0; i < terminal->height; i++) {
cairo_move_to(cr, terminal->margin,
terminal->margin + extents.ascent + extents.height * i);
cairo_show_text(cr, &terminal->data[row * (terminal->width + 1)]);
cairo_show_text(cr, terminal_get_row(terminal, i));
}
cairo_destroy(cr);
@ -219,29 +224,92 @@ terminal_schedule_redraw(struct terminal *terminal)
}
}
static void
terminal_data(struct terminal *terminal, const char *data, size_t length);
static void
handle_escape(struct terminal *terminal)
{
char *row;
int i, j;
char *row, *p;
int i, count;
int args[10], set[10] = { 0, };
terminal->escape[terminal->escape_length++] = '\0';
if (strcmp(terminal->escape, "\e[J") == 0) {
row = &terminal->data[terminal->row * (terminal->width + 1)];
memset(&row[terminal->column], 0, terminal->width - terminal->column);
for (i = terminal->total_rows; i < terminal->height; i++) {
j = terminal->row + i;
if (j >= terminal->height)
j -= terminal->height;
row = &terminal->data[j * (terminal->width + 1)];
memset(row, 0, terminal->width);
i = 0;
p = &terminal->escape[2];
while ((isdigit(*p) || *p == ';') && i < 10) {
if (*p == ';') {
p++;
i++;
} else {
args[i] = strtol(p, &p, 10);
set[i] = 1;
}
}
} else if (strcmp(terminal->escape, "\e[H") == 0) {
terminal->row = terminal->tail;
terminal->total_rows = 1;
switch (*p) {
case 'A':
count = set[0] ? args[0] : 1;
if (terminal->row - count >= 0)
terminal->row -= count;
else
terminal->row = 0;
break;
case 'B':
count = set[0] ? args[0] : 1;
if (terminal->row + count < terminal->height)
terminal->row += count;
else
terminal->row = terminal->height;
break;
case 'C':
count = set[0] ? args[0] : 1;
if (terminal->column + count < terminal->width)
terminal->column += count;
else
terminal->column = terminal->width;
break;
case 'D':
count = set[0] ? args[0] : 1;
if (terminal->column - count >= 0)
terminal->column -= count;
else
terminal->column = 0;
break;
case 'J':
row = terminal_get_row(terminal, terminal->row);
memset(&row[terminal->column], 0, terminal->width - terminal->column);
for (i = terminal->row + 1; i < terminal->height; i++)
memset(terminal_get_row(terminal, i), 0, terminal->width);
break;
case 'G':
if (set[0])
terminal->column = args[0] - 1;
break;
case 'H':
case 'f':
terminal->row = set[0] ? args[0] - 1 : 0;
terminal->column = set[1] ? args[1] - 1 : 0;
break;
case 'K':
row = terminal_get_row(terminal, terminal->row);
memset(&row[terminal->column], 0, terminal->width - terminal->column);
break;
case 'm':
/* color, blink, bold etc*/
break;
case '?':
if (strcmp(p, "?25l") == 0) {
/* hide cursor */
} else if (strcmp(p, "?25h") == 0) {
/* show cursor */
}
break;
default:
terminal_data(terminal,
terminal->escape + 1,
terminal->escape_length - 2);
break;
}
}
@ -252,7 +320,7 @@ terminal_data(struct terminal *terminal, const char *data, size_t length)
char *row;
for (i = 0; i < length; i++) {
row = &terminal->data[terminal->row * (terminal->width + 1)];
row = terminal_get_row(terminal, terminal->row);
if (terminal->state == STATE_ESCAPE) {
terminal->escape[terminal->escape_length++] = data[i];
@ -276,19 +344,16 @@ terminal_data(struct terminal *terminal, const char *data, size_t length)
break;
case '\n':
terminal->column = 0;
if (terminal->row + 1 < terminal->height) {
terminal->row++;
if (terminal->row == terminal->height)
terminal->row = 0;
if (terminal->total_rows == terminal->height) {
memset(&terminal->data[terminal->row * (terminal->width + 1)],
0, terminal->width);
terminal->tail++;
} else {
terminal->total_rows++;
terminal->start++;
if (terminal->start == terminal->height)
terminal->start = 0;
memset(terminal_get_row(terminal, terminal->row),
0, terminal->width);
}
if (terminal->tail == terminal->height)
terminal->tail = 0;
break;
case '\t':
memset(&row[terminal->column], ' ', -terminal->column & 7);
@ -299,9 +364,16 @@ terminal_data(struct terminal *terminal, const char *data, size_t length)
terminal->escape[0] = '\e';
terminal->escape_length = 1;
break;
case '\b':
if (terminal->column > 0)
terminal->column--;
break;
case '\a':
/* Bell */
break;
default:
if (terminal->column < terminal->width)
row[terminal->column++] = data[i];
row[terminal->column++] = data[i] < 32 ? data[i] + 64 : data[i];
break;
}
}

Write Preview
Loading…
Cancel
Save