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terminal: vt102 editing commands

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Implement the vt102 editing commands, and insert/replace mode.

Signed-off-by: Callum Lowcay <callum@callumscode.com>
This commit is contained in:
Callum Lowcay 2011-01-07 19:47:00 +00:00 • committed by Kristian Høgsberg
parent 8e57dd5071
commit 69e9658da0
1 changed files with 97 additions and 2 deletions
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99
clients/terminal.c
View file

@ -62,6 +62,7 @@ static int option_fullscreen;
#define MODE_AUTOWRAP 0x00000004
#define MODE_AUTOREPEAT 0x00000008
#define MODE_LF_NEWLINE 0x00000010
#define MODE_IRM 0x00000020
union utf8_char {
unsigned char byte[4];
@ -393,6 +394,40 @@ terminal_scroll(struct terminal *terminal, int d)
terminal_scroll_window(terminal, d);
}
static void
terminal_shift_line(struct terminal *terminal, int d)
{
union utf8_char *row;
struct attr *attr_row, attr;
row = terminal_get_row(terminal, terminal->row);
attr_row = terminal_get_attr_row(terminal, terminal->row);
if ((terminal->width + d) <= terminal->column)
d = terminal->column + 1 - terminal->width;
if ((terminal->column + d) >= terminal->width)
d = terminal->width - terminal->column - 1;
if (d < 0) {
d = 0 - d;
memmove(&row[terminal->column],
&row[terminal->column + d],
(terminal->width - terminal->column - d) * sizeof(union utf8_char));
attr = attr_row[terminal->width - 1];
memmove(&attr_row[terminal->column], &attr_row[terminal->column + d],
(terminal->width - terminal->column - d) * sizeof(struct attr));
memset(&row[terminal->width - d], 0, d * sizeof(union utf8_char));
attr_init(&attr_row[terminal->width - d], terminal->curr_attr, d);
} else {
memmove(&row[terminal->column + d], &row[terminal->column],
(terminal->width - terminal->column - d) * sizeof(union utf8_char));
memmove(&attr_row[terminal->column + d], &attr_row[terminal->column],
(terminal->width - terminal->column - d) * sizeof(struct attr));
memset(&row[terminal->column], 0, d * sizeof(union utf8_char));
attr_init(&attr_row[terminal->column], terminal->curr_attr, d);
}
}
static void
terminal_resize(struct terminal *terminal, int width, int height)
{
@ -724,6 +759,10 @@ handle_term_parameter(struct terminal *terminal, int code, int sr)
}
} else {
switch(code) {
case 4: /* IRM */
if (sr) terminal->mode |= MODE_IRM;
else terminal->mode &= ~MODE_IRM;
break;
case 20: /* LNM */
if (sr) terminal->mode |= MODE_LF_NEWLINE;
else terminal->mode &= ~MODE_LF_NEWLINE;
@ -763,6 +802,11 @@ handle_escape(struct terminal *terminal)
}
switch (*p) {
case '@': /* ICH */
count = set[0] ? args[0] : 1;
if (count == 0) count = 1;
terminal_shift_line(terminal, count);
break;
case 'A': /* CUU */
count = set[0] ? args[0] : 1;
if (count == 0) count = 1;
@ -893,12 +937,59 @@ handle_escape(struct terminal *terminal)
attr_init(attr_row, terminal->curr_attr, terminal->width);
}
break;
case 'L': /* IL */
count = set[0] ? args[0] : 1;
if (count == 0) count = 1;
if (terminal->row >= terminal->margin_top &&
terminal->row < terminal->margin_bottom)
{
top = terminal->margin_top;
terminal->margin_top = terminal->row;
terminal_scroll(terminal, 0 - count);
terminal->margin_top = top;
} else if (terminal->row == terminal->margin_bottom) {
memset(terminal_get_row(terminal, terminal->row),
0, terminal->data_pitch);
attr_init(terminal_get_attr_row(terminal, terminal->row),
terminal->curr_attr, terminal->width);
}
break;
case 'M': /* DL */
count = set[0] ? args[0] : 1;
if (count == 0) count = 1;
if (terminal->row >= terminal->margin_top &&
terminal->row < terminal->margin_bottom)
{
top = terminal->margin_top;
terminal->margin_top = terminal->row;
terminal_scroll(terminal, count);
terminal->margin_top = top;
} else if (terminal->row == terminal->margin_bottom) {
memset(terminal_get_row(terminal, terminal->row),
0, terminal->data_pitch);
}
break;
case 'P': /* DCH */
count = set[0] ? args[0] : 1;
if (count == 0) count = 1;
terminal_shift_line(terminal, 0 - count);
break;
case 'S': /* SU */
terminal_scroll(terminal, set[0] ? args[0] : 1);
break;
case 'T': /* SD */
terminal_scroll(terminal, 0 - (set[0] ? args[0] : 1));
break;
case 'X': /* ECH */
count = set[0] ? args[0] : 1;
if (count == 0) count = 1;
if ((terminal->column + count) > terminal->width)
count = terminal->width - terminal->column;
row = terminal_get_row(terminal, terminal->row);
attr_row = terminal_get_attr_row(terminal, terminal->row);
memset(&row[terminal->column], 0, count * sizeof(union utf8_char));
attr_init(&attr_row[terminal->column], terminal->curr_attr, count);
break;
case 'Z': /* CBT */
count = set[0] ? args[0] : 1;
if (count == 0) count = 1;
@ -923,7 +1014,7 @@ handle_escape(struct terminal *terminal)
terminal->last_char.byte[0] = 0;
break;
case 'c': /* Primary DA */
write(terminal->master, "\e[?1;2c", 7);
write(terminal->master, "\e[?6c", 5);
sleep(1);
break;
case 'd': /* VPA */
@ -1186,6 +1277,8 @@ handle_special_char(struct terminal *terminal, char c)
case '\t':
while (terminal->column < terminal->width) {
if (terminal->tab_ruler[terminal->column]) break;
if (terminal->mode & MODE_IRM)
terminal_shift_line(terminal, +1);
row[terminal->column].byte[0] = ' ';
row[terminal->column].byte[1] = '\0';
attr_row[terminal->column] = terminal->curr_attr;
@ -1259,6 +1352,8 @@ handle_char(struct terminal *terminal, union utf8_char utf8)
row = terminal_get_row(terminal, terminal->row);
attr_row = terminal_get_attr_row(terminal, terminal->row);
if (terminal->mode & MODE_IRM)
terminal_shift_line(terminal, +1);
row[terminal->column] = utf8;
attr_row[terminal->column++] = terminal->curr_attr;
@ -1508,7 +1603,7 @@ terminal_run(struct terminal *terminal, const char *path)
pid = forkpty(&master, NULL, NULL, NULL);
if (pid == 0) {
setenv("TERM", "vt100", 1);
setenv("TERM", "vt102", 1);
if (execl(path, path, NULL)) {
printf("exec failed: %m\n");
exit(EXIT_FAILURE);