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Proper support for tab stops (\033H etc), using a bitstring(3). Makes another

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vttest test happy.
This commit is contained in:
Nicholas Marriott
2009-06-25 15:54:38 +00:00
parent cd71a13a14
commit 1b245388b5
3 changed files with 83 additions and 11 deletions
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55
input.c
View File

@@ -1,4 +1,4 @@
/* $OpenBSD: input.c,v 1.6 2009/06/04 14:42:14 nicm Exp $ */
/* $OpenBSD: input.c,v 1.7 2009/06/04 18:48:24 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -74,6 +74,7 @@ void input_handle_sequence_vpa(struct input_ctx *);
void input_handle_sequence_hpa(struct input_ctx *);
void input_handle_sequence_cup(struct input_ctx *);
void input_handle_sequence_cup(struct input_ctx *);
void input_handle_sequence_tbc(struct input_ctx *);
void input_handle_sequence_ed(struct input_ctx *);
void input_handle_sequence_el(struct input_ctx *);
void input_handle_sequence_sm(struct input_ctx *);
@@ -103,6 +104,7 @@ const struct input_sequence_entry input_sequence_table[] = {
{ 'P', input_handle_sequence_dch },
{ 'd', input_handle_sequence_vpa },
{ 'f', input_handle_sequence_cup },
{ 'g', input_handle_sequence_tbc },
{ 'h', input_handle_sequence_sm },
{ 'l', input_handle_sequence_rm },
{ 'm', input_handle_sequence_sgr },
@@ -645,12 +647,16 @@ input_handle_c0_control(u_char ch, struct input_ctx *ictx)
screen_write_cursorleft(&ictx->ctx, 1);
break;
case '\011': /* TAB */
s->cx = ((s->cx / 8) * 8) + 8;
if (s->cx > screen_size_x(s) - 1) {
s->cx = 0;
screen_write_cursordown(&ictx->ctx, 1);
}
screen_write_cursormove(&ictx->ctx, s->cx, s->cy);
/* Don't tab beyond the end of the line. */
if (s->cx >= screen_size_x(s) - 1)
break;
/* Find the next tab point, or use the last column if none. */
do {
s->cx++;
if (bit_test(s->tabs, s->cx))
break;
} while (s->cx < screen_size_x(s) - 1);
break;
case '\013': /* VT */
screen_write_linefeed(&ictx->ctx);
@@ -670,6 +676,8 @@ input_handle_c0_control(u_char ch, struct input_ctx *ictx)
void
input_handle_c1_control(u_char ch, struct input_ctx *ictx)
{
struct screen *s = ictx->ctx.s;
log_debug2("-- c1 %zu: %hhu (%c)", ictx->off, ch, ch);
switch (ch) {
@@ -680,6 +688,10 @@ input_handle_c1_control(u_char ch, struct input_ctx *ictx)
screen_write_carriagereturn(&ictx->ctx);
screen_write_linefeed(&ictx->ctx);
break;
case 'H': /* HTS */
if (s->cx < screen_size_x(s))
bit_set(s->tabs, s->cx);
break;
case 'M': /* RI */
screen_write_reverseindex(&ictx->ctx);
break;
@@ -755,7 +767,7 @@ input_handle_standard_two(u_char ch, struct input_ctx *ictx)
"-- s2 %zu: %hhu (%c) %hhu", ictx->off, ch, ch, ictx->intermediate);
switch (ch) {
case 'B': /* Dscs (ASCII) */
case 'B': /* SCS */
/*
* Not really supported, but fake it up enough for those that
* use it to switch character sets (by redefining G0 to
@@ -774,6 +786,8 @@ input_handle_standard_two(u_char ch, struct input_ctx *ictx)
ictx->saved_cx = 0;
ictx->saved_cy = 0;
screen_reset_tabs(ictx->ctx.s);
screen_write_scrollregion(
&ictx->ctx, 0, screen_size_y(ictx->ctx.s) - 1);
@@ -1027,6 +1041,31 @@ input_handle_sequence_cup(struct input_ctx *ictx)
screen_write_cursormove(&ictx->ctx, m - 1, n - 1);
}
void
input_handle_sequence_tbc(struct input_ctx *ictx)
{
struct screen *s = ictx->ctx.s;
uint16_t n;
if (ictx->private != '\0')
return;
if (ARRAY_LENGTH(&ictx->args) > 1)
return;
if (input_get_argument(ictx, 0, &n, 1) != 0)
return;
switch (n) {
case 0:
if (s->cx < screen_size_x(s))
bit_clear(s->tabs, s->cx);
break;
case 3:
bit_nclear(s->tabs, 0, screen_size_x(s) - 1);
break;
}
}
void
input_handle_sequence_ed(struct input_ctx *ictx)
{

33
screen.c
View File

@@ -1,4 +1,4 @@
/* $OpenBSD: screen.c,v 1.2 2009/06/03 19:33:04 nicm Exp $ */
/* $OpenBSD: screen.c,v 1.3 2009/06/04 18:48:24 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -18,6 +18,7 @@
#include <sys/types.h>
#include <stdlib.h>
#include <string.h>
#include <vis.h>
@@ -34,6 +35,8 @@ screen_init(struct screen *s, u_int sx, u_int sy, u_int hlimit)
s->title = xstrdup("");
s->tabs = NULL;
screen_reinit(s);
}
@@ -49,6 +52,8 @@ screen_reinit(struct screen *s)
s->mode = MODE_CURSOR;
screen_reset_tabs(s);
grid_clear_lines(s->grid, s->grid->hsize, s->grid->sy - 1);
screen_clear_selection(s);
@@ -62,6 +67,21 @@ screen_free(struct screen *s)
grid_destroy(s->grid);
}
/* Reset tabs to default, eight spaces apart. */
void
screen_reset_tabs(struct screen *s)
{
u_int i;
if (s->tabs != NULL)
xfree(s->tabs);
if ((s->tabs = bit_alloc(screen_size_x(s))) == NULL)
fatal("bit_alloc failed");
for (i = 8; i < screen_size_x(s); i += 8)
bit_set(s->tabs, i);
}
/* Set screen title. */
void
screen_set_title(struct screen *s, const char *title)
@@ -83,8 +103,17 @@ screen_resize(struct screen *s, u_int sx, u_int sy)
if (sy < 1)
sy = 1;
if (sx != screen_size_x(s))
if (sx != screen_size_x(s)) {
screen_resize_x(s, sx);
/*
* It is unclear what should happen to tabs on resize. xterm
* seems to try and maintain them, rxvt resets them. Resetting
* is simpler and more reliable so let's do that.
*/
screen_reset_tabs(s);
}
if (sy != screen_size_y(s))
screen_resize_y(s, sy);
}

6
tmux.h
View File

@@ -1,4 +1,4 @@
/* $OpenBSD: tmux.h,v 1.5 2009/06/03 23:30:40 nicm Exp $ */
/* $OpenBSD: tmux.h,v 1.6 2009/06/04 18:48:24 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -48,6 +48,7 @@
#include <getopt.h>
#endif
#include <bitstring.h>
#include <limits.h>
#include <signal.h>
#include <stdarg.h>
@@ -576,6 +577,8 @@ struct screen {
int mode;
bitstr_t *tabs;
struct screen_sel sel;
};
@@ -1518,6 +1521,7 @@ void screen_redraw_status(struct client *);
void screen_init(struct screen *, u_int, u_int, u_int);
void screen_reinit(struct screen *);
void screen_free(struct screen *);
void screen_reset_tabs(struct screen *);
void screen_set_title(struct screen *, const char *);
void screen_resize(struct screen *, u_int, u_int);
void screen_set_selection(