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Implement ECH (erase character, CSI X). Reported by Christian Neukirchen.

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This commit is contained in:
Nicholas Marriott
2013-01-15 23:18:55 +00:00
parent bc2e4a36df
commit 44f8e1caff
5 changed files with 50 additions and 0 deletions
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5
input.c
View File

@@ -135,6 +135,7 @@ enum input_csi_type {
INPUT_CSI_DECSTBM,
INPUT_CSI_DL,
INPUT_CSI_DSR,
INPUT_CSI_ECH,
INPUT_CSI_ED,
INPUT_CSI_EL,
INPUT_CSI_HPA,
@@ -167,6 +168,7 @@ const struct input_table_entry input_csi_table[] = {
{ 'L', "", INPUT_CSI_IL },
{ 'M', "", INPUT_CSI_DL },
{ 'P', "", INPUT_CSI_DCH },
{ 'X', "", INPUT_CSI_ECH },
{ 'Z', "", INPUT_CSI_CBT },
{ 'c', "", INPUT_CSI_DA },
{ 'c', ">", INPUT_CSI_DA_TWO },
@@ -1143,6 +1145,9 @@ input_csi_dispatch(struct input_ctx *ictx)
break;
}
break;
case INPUT_CSI_ECH:
screen_write_clearcharacter(sctx, input_get(ictx, 0, 1, 1));
break;
case INPUT_CSI_DCH:
screen_write_deletecharacter(sctx, input_get(ictx, 0, 1, 1));
break;

24
screen-write.c
View File

@@ -649,6 +649,30 @@ screen_write_deletecharacter(struct screen_write_ctx *ctx, u_int nx)
tty_write(tty_cmd_deletecharacter, &ttyctx);
}
/* Clear nx characters. */
void
screen_write_clearcharacter(struct screen_write_ctx *ctx, u_int nx)
{
struct screen *s = ctx->s;
struct tty_ctx ttyctx;
if (nx == 0)
nx = 1;
if (nx > screen_size_x(s) - s->cx)
nx = screen_size_x(s) - s->cx;
if (nx == 0)
return;
screen_write_initctx(ctx, &ttyctx, 0);
if (s->cx <= screen_size_x(s) - 1)
grid_view_clear(s->grid, s->cx, s->cy, nx, 1);
ttyctx.num = nx;
tty_write(tty_cmd_clearcharacter, &ttyctx);
}
/* Insert ny lines. */
void
screen_write_insertline(struct screen_write_ctx *ctx, u_int ny)

3
tmux.h
View File

@@ -274,6 +274,7 @@ enum tty_code_code {
TTYC_DL, /* parm_delete_line, DL */
TTYC_DL1, /* delete_line, dl */
TTYC_E3,
TTYC_ECH, /* erase_chars, ec */
TTYC_EL, /* clr_eol, ce */
TTYC_EL1, /* clr_bol, cb */
TTYC_ENACS, /* ena_acs, eA */
@@ -1660,6 +1661,7 @@ void tty_cmd_clearscreen(struct tty *, const struct tty_ctx *);
void tty_cmd_clearstartofline(struct tty *, const struct tty_ctx *);
void tty_cmd_clearstartofscreen(struct tty *, const struct tty_ctx *);
void tty_cmd_deletecharacter(struct tty *, const struct tty_ctx *);
void tty_cmd_clearcharacter(struct tty *, const struct tty_ctx *);
void tty_cmd_deleteline(struct tty *, const struct tty_ctx *);
void tty_cmd_erasecharacter(struct tty *, const struct tty_ctx *);
void tty_cmd_insertcharacter(struct tty *, const struct tty_ctx *);
@@ -2049,6 +2051,7 @@ void screen_write_cursorleft(struct screen_write_ctx *, u_int);
void screen_write_alignmenttest(struct screen_write_ctx *);
void screen_write_insertcharacter(struct screen_write_ctx *, u_int);
void screen_write_deletecharacter(struct screen_write_ctx *, u_int);
void screen_write_clearcharacter(struct screen_write_ctx *, u_int);
void screen_write_insertline(struct screen_write_ctx *, u_int);
void screen_write_deleteline(struct screen_write_ctx *, u_int);
void screen_write_clearline(struct screen_write_ctx *);

1
tty-term.c
View File

@@ -62,6 +62,7 @@ const struct tty_term_code_entry tty_term_codes[NTTYCODE] = {
{ TTYC_DL, TTYCODE_STRING, "dl" },
{ TTYC_DL1, TTYCODE_STRING, "dl1" },
{ TTYC_E3, TTYCODE_STRING, "E3" },
{ TTYC_ECH, TTYCODE_STRING, "ech" },
{ TTYC_EL, TTYCODE_STRING, "el" },
{ TTYC_EL1, TTYCODE_STRING, "el1" },
{ TTYC_ENACS, TTYCODE_STRING, "enacs" },

17
tty.c
View File

@@ -718,6 +718,23 @@ tty_cmd_deletecharacter(struct tty *tty, const struct tty_ctx *ctx)
tty_emulate_repeat(tty, TTYC_DCH, TTYC_DCH1, ctx->num);
}
void
tty_cmd_clearcharacter(struct tty *tty, const struct tty_ctx *ctx)
{
u_int i;
tty_reset(tty);
tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
if (tty_term_has(tty->term, TTYC_ECH))
tty_putcode1(tty, TTYC_ECH, ctx->num);
else {
for (i = 0; i < ctx->num; i++)
tty_putc(tty, ' ');
}
}
void
tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx)
{