Replace syscons terminal renderer by a new renderer that uses libteken.
Some time ago I started working on a library called libteken, which is
terminal emulator. It does not buffer any screen contents, but only
keeps terminal state, such as cursor position, attributes, etc. It
should implement all escape sequences that are implemented by the
cons25 terminal emulator, but also a fair amount of sequences that are
present in VT100 and xterm.
A lot of random notes, which could be of interest to users/developers:
- Even though I'm leaving the terminal type set to `cons25', users can
do experiments with placing `xterm-color' in /etc/ttys. Because we
only implement a subset of features of xterm, this may cause
artifacts. We should consider extending libteken, because in my
opinion xterm is the way to go. Some missing features:
- Keypad application mode (DECKPAM)
- Character sets (SCS)
- libteken is filled with a fair amount of assertions, but unfortunately
we cannot go into the debugger anymore if we fail them. I've done
development of this library almost entirely in userspace. In
sys/dev/syscons/teken there are two applications that can be helpful
when debugging the code:
- teken_demo: a terminal emulator that can be started from a regular
xterm that emulates a terminal using libteken. This application can
be very useful to debug any rendering issues.
- teken_stress: a stress testing application that emulates random
terminal output. libteken has literally survived multiple terabytes
of random input.
- libteken also includes support for UTF-8, but unfortunately our input
layer and font renderer don't support this. If users want to
experiment with UTF-8 support, they can enable `TEKEN_UTF8' in
teken.h. If you recompile your kernel or the teken_demo application,
you can hold some nice experiments.
- I've left PC98 the way it is right now. The PC98 platform has a custom
syscons renderer, which supports some form of localised input. Maybe
we should port PC98 to libteken by the time syscons supports UTF-8?
- I've removed the `dumb' terminal emulator. It has been broken for
years. It hasn't survived the `struct proc' -> `struct thread'
conversion.
- To prevent confusion among people that want to hack on libteken:
unlike syscons, the state machines that parse the escape sequences are
machine generated. This means that if you want to add new escape
sequences, you have to add an entry to the `sequences' file. This will
cause new entries to be added to `teken_state.h'.
- Any rendering artifacts that didn't occur prior to this commit are by
accident. They should be reported to me, so I can fix them.
Discussed on: current@, hackers@
Discussed with: philip (at 25C3)
2009-01-01 13:26:53 +00:00
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|
/*-
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* Copyright (c) 2008-2009 Ed Schouten <ed@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/cdefs.h>
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#if defined(__FreeBSD__) && defined(_KERNEL)
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#include <sys/param.h>
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#include <sys/lock.h>
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#include <sys/systm.h>
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#define teken_assert(x) MPASS(x)
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#define teken_printf(x,...)
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#else /* !(__FreeBSD__ && _KERNEL) */
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#include <sys/types.h>
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#include <assert.h>
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#include <inttypes.h>
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#include <stdio.h>
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#include <string.h>
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#define teken_assert(x) assert(x)
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#define teken_printf(x,...) do { \
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if (df != NULL) \
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fprintf(df, x, ## __VA_ARGS__); \
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} while (0)
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/* debug messages */
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static FILE *df;
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#endif /* __FreeBSD__ && _KERNEL */
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#include "teken.h"
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#ifdef TEKEN_UTF8
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#include "teken_wcwidth.h"
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#else /* !TEKEN_UTF8 */
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static inline int
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2009-01-04 00:20:18 +00:00
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teken_wcwidth(teken_char_t c __unused)
|
Replace syscons terminal renderer by a new renderer that uses libteken.
Some time ago I started working on a library called libteken, which is
terminal emulator. It does not buffer any screen contents, but only
keeps terminal state, such as cursor position, attributes, etc. It
should implement all escape sequences that are implemented by the
cons25 terminal emulator, but also a fair amount of sequences that are
present in VT100 and xterm.
A lot of random notes, which could be of interest to users/developers:
- Even though I'm leaving the terminal type set to `cons25', users can
do experiments with placing `xterm-color' in /etc/ttys. Because we
only implement a subset of features of xterm, this may cause
artifacts. We should consider extending libteken, because in my
opinion xterm is the way to go. Some missing features:
- Keypad application mode (DECKPAM)
- Character sets (SCS)
- libteken is filled with a fair amount of assertions, but unfortunately
we cannot go into the debugger anymore if we fail them. I've done
development of this library almost entirely in userspace. In
sys/dev/syscons/teken there are two applications that can be helpful
when debugging the code:
- teken_demo: a terminal emulator that can be started from a regular
xterm that emulates a terminal using libteken. This application can
be very useful to debug any rendering issues.
- teken_stress: a stress testing application that emulates random
terminal output. libteken has literally survived multiple terabytes
of random input.
- libteken also includes support for UTF-8, but unfortunately our input
layer and font renderer don't support this. If users want to
experiment with UTF-8 support, they can enable `TEKEN_UTF8' in
teken.h. If you recompile your kernel or the teken_demo application,
you can hold some nice experiments.
- I've left PC98 the way it is right now. The PC98 platform has a custom
syscons renderer, which supports some form of localised input. Maybe
we should port PC98 to libteken by the time syscons supports UTF-8?
- I've removed the `dumb' terminal emulator. It has been broken for
years. It hasn't survived the `struct proc' -> `struct thread'
conversion.
- To prevent confusion among people that want to hack on libteken:
unlike syscons, the state machines that parse the escape sequences are
machine generated. This means that if you want to add new escape
sequences, you have to add an entry to the `sequences' file. This will
cause new entries to be added to `teken_state.h'.
- Any rendering artifacts that didn't occur prior to this commit are by
accident. They should be reported to me, so I can fix them.
Discussed on: current@, hackers@
Discussed with: philip (at 25C3)
2009-01-01 13:26:53 +00:00
|
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|
{
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|
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|
2009-01-04 00:20:18 +00:00
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#ifdef TEKEN_CONS25
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return (1);
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|
|
#else /* !TEKEN_CONS25 */
|
Replace syscons terminal renderer by a new renderer that uses libteken.
Some time ago I started working on a library called libteken, which is
terminal emulator. It does not buffer any screen contents, but only
keeps terminal state, such as cursor position, attributes, etc. It
should implement all escape sequences that are implemented by the
cons25 terminal emulator, but also a fair amount of sequences that are
present in VT100 and xterm.
A lot of random notes, which could be of interest to users/developers:
- Even though I'm leaving the terminal type set to `cons25', users can
do experiments with placing `xterm-color' in /etc/ttys. Because we
only implement a subset of features of xterm, this may cause
artifacts. We should consider extending libteken, because in my
opinion xterm is the way to go. Some missing features:
- Keypad application mode (DECKPAM)
- Character sets (SCS)
- libteken is filled with a fair amount of assertions, but unfortunately
we cannot go into the debugger anymore if we fail them. I've done
development of this library almost entirely in userspace. In
sys/dev/syscons/teken there are two applications that can be helpful
when debugging the code:
- teken_demo: a terminal emulator that can be started from a regular
xterm that emulates a terminal using libteken. This application can
be very useful to debug any rendering issues.
- teken_stress: a stress testing application that emulates random
terminal output. libteken has literally survived multiple terabytes
of random input.
- libteken also includes support for UTF-8, but unfortunately our input
layer and font renderer don't support this. If users want to
experiment with UTF-8 support, they can enable `TEKEN_UTF8' in
teken.h. If you recompile your kernel or the teken_demo application,
you can hold some nice experiments.
- I've left PC98 the way it is right now. The PC98 platform has a custom
syscons renderer, which supports some form of localised input. Maybe
we should port PC98 to libteken by the time syscons supports UTF-8?
- I've removed the `dumb' terminal emulator. It has been broken for
years. It hasn't survived the `struct proc' -> `struct thread'
conversion.
- To prevent confusion among people that want to hack on libteken:
unlike syscons, the state machines that parse the escape sequences are
machine generated. This means that if you want to add new escape
sequences, you have to add an entry to the `sequences' file. This will
cause new entries to be added to `teken_state.h'.
- Any rendering artifacts that didn't occur prior to this commit are by
accident. They should be reported to me, so I can fix them.
Discussed on: current@, hackers@
Discussed with: philip (at 25C3)
2009-01-01 13:26:53 +00:00
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|
return (c <= 0x1B) ? -1 : 1;
|
2009-01-04 00:20:18 +00:00
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|
#endif /* TEKEN_CONS25 */
|
Replace syscons terminal renderer by a new renderer that uses libteken.
Some time ago I started working on a library called libteken, which is
terminal emulator. It does not buffer any screen contents, but only
keeps terminal state, such as cursor position, attributes, etc. It
should implement all escape sequences that are implemented by the
cons25 terminal emulator, but also a fair amount of sequences that are
present in VT100 and xterm.
A lot of random notes, which could be of interest to users/developers:
- Even though I'm leaving the terminal type set to `cons25', users can
do experiments with placing `xterm-color' in /etc/ttys. Because we
only implement a subset of features of xterm, this may cause
artifacts. We should consider extending libteken, because in my
opinion xterm is the way to go. Some missing features:
- Keypad application mode (DECKPAM)
- Character sets (SCS)
- libteken is filled with a fair amount of assertions, but unfortunately
we cannot go into the debugger anymore if we fail them. I've done
development of this library almost entirely in userspace. In
sys/dev/syscons/teken there are two applications that can be helpful
when debugging the code:
- teken_demo: a terminal emulator that can be started from a regular
xterm that emulates a terminal using libteken. This application can
be very useful to debug any rendering issues.
- teken_stress: a stress testing application that emulates random
terminal output. libteken has literally survived multiple terabytes
of random input.
- libteken also includes support for UTF-8, but unfortunately our input
layer and font renderer don't support this. If users want to
experiment with UTF-8 support, they can enable `TEKEN_UTF8' in
teken.h. If you recompile your kernel or the teken_demo application,
you can hold some nice experiments.
- I've left PC98 the way it is right now. The PC98 platform has a custom
syscons renderer, which supports some form of localised input. Maybe
we should port PC98 to libteken by the time syscons supports UTF-8?
- I've removed the `dumb' terminal emulator. It has been broken for
years. It hasn't survived the `struct proc' -> `struct thread'
conversion.
- To prevent confusion among people that want to hack on libteken:
unlike syscons, the state machines that parse the escape sequences are
machine generated. This means that if you want to add new escape
sequences, you have to add an entry to the `sequences' file. This will
cause new entries to be added to `teken_state.h'.
- Any rendering artifacts that didn't occur prior to this commit are by
accident. They should be reported to me, so I can fix them.
Discussed on: current@, hackers@
Discussed with: philip (at 25C3)
2009-01-01 13:26:53 +00:00
|
|
|
}
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|
#endif /* TEKEN_UTF8 */
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/* Private flags for teken_format_t. */
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#define TF_REVERSE 0x08
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/* Private flags for t_stateflags. */
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#define TS_FIRSTDIGIT 0x01 /* First numeric digit in escape sequence. */
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#define TS_INSERT 0x02 /* Insert mode. */
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#define TS_AUTOWRAP 0x04 /* Autowrap. */
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#define TS_ORIGIN 0x08 /* Origin mode. */
|
2009-01-03 22:51:54 +00:00
|
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|
#ifdef TEKEN_CONS25
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|
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#define TS_WRAPPED 0x00 /* Simple line wrapping. */
|
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|
|
#else /* !TEKEN_CONS25 */
|
Replace syscons terminal renderer by a new renderer that uses libteken.
Some time ago I started working on a library called libteken, which is
terminal emulator. It does not buffer any screen contents, but only
keeps terminal state, such as cursor position, attributes, etc. It
should implement all escape sequences that are implemented by the
cons25 terminal emulator, but also a fair amount of sequences that are
present in VT100 and xterm.
A lot of random notes, which could be of interest to users/developers:
- Even though I'm leaving the terminal type set to `cons25', users can
do experiments with placing `xterm-color' in /etc/ttys. Because we
only implement a subset of features of xterm, this may cause
artifacts. We should consider extending libteken, because in my
opinion xterm is the way to go. Some missing features:
- Keypad application mode (DECKPAM)
- Character sets (SCS)
- libteken is filled with a fair amount of assertions, but unfortunately
we cannot go into the debugger anymore if we fail them. I've done
development of this library almost entirely in userspace. In
sys/dev/syscons/teken there are two applications that can be helpful
when debugging the code:
- teken_demo: a terminal emulator that can be started from a regular
xterm that emulates a terminal using libteken. This application can
be very useful to debug any rendering issues.
- teken_stress: a stress testing application that emulates random
terminal output. libteken has literally survived multiple terabytes
of random input.
- libteken also includes support for UTF-8, but unfortunately our input
layer and font renderer don't support this. If users want to
experiment with UTF-8 support, they can enable `TEKEN_UTF8' in
teken.h. If you recompile your kernel or the teken_demo application,
you can hold some nice experiments.
- I've left PC98 the way it is right now. The PC98 platform has a custom
syscons renderer, which supports some form of localised input. Maybe
we should port PC98 to libteken by the time syscons supports UTF-8?
- I've removed the `dumb' terminal emulator. It has been broken for
years. It hasn't survived the `struct proc' -> `struct thread'
conversion.
- To prevent confusion among people that want to hack on libteken:
unlike syscons, the state machines that parse the escape sequences are
machine generated. This means that if you want to add new escape
sequences, you have to add an entry to the `sequences' file. This will
cause new entries to be added to `teken_state.h'.
- Any rendering artifacts that didn't occur prior to this commit are by
accident. They should be reported to me, so I can fix them.
Discussed on: current@, hackers@
Discussed with: philip (at 25C3)
2009-01-01 13:26:53 +00:00
|
|
|
#define TS_WRAPPED 0x10 /* Next character should be printed on col 0. */
|
2009-01-03 22:51:54 +00:00
|
|
|
#endif /* TEKEN_CONS25 */
|
Replace syscons terminal renderer by a new renderer that uses libteken.
Some time ago I started working on a library called libteken, which is
terminal emulator. It does not buffer any screen contents, but only
keeps terminal state, such as cursor position, attributes, etc. It
should implement all escape sequences that are implemented by the
cons25 terminal emulator, but also a fair amount of sequences that are
present in VT100 and xterm.
A lot of random notes, which could be of interest to users/developers:
- Even though I'm leaving the terminal type set to `cons25', users can
do experiments with placing `xterm-color' in /etc/ttys. Because we
only implement a subset of features of xterm, this may cause
artifacts. We should consider extending libteken, because in my
opinion xterm is the way to go. Some missing features:
- Keypad application mode (DECKPAM)
- Character sets (SCS)
- libteken is filled with a fair amount of assertions, but unfortunately
we cannot go into the debugger anymore if we fail them. I've done
development of this library almost entirely in userspace. In
sys/dev/syscons/teken there are two applications that can be helpful
when debugging the code:
- teken_demo: a terminal emulator that can be started from a regular
xterm that emulates a terminal using libteken. This application can
be very useful to debug any rendering issues.
- teken_stress: a stress testing application that emulates random
terminal output. libteken has literally survived multiple terabytes
of random input.
- libteken also includes support for UTF-8, but unfortunately our input
layer and font renderer don't support this. If users want to
experiment with UTF-8 support, they can enable `TEKEN_UTF8' in
teken.h. If you recompile your kernel or the teken_demo application,
you can hold some nice experiments.
- I've left PC98 the way it is right now. The PC98 platform has a custom
syscons renderer, which supports some form of localised input. Maybe
we should port PC98 to libteken by the time syscons supports UTF-8?
- I've removed the `dumb' terminal emulator. It has been broken for
years. It hasn't survived the `struct proc' -> `struct thread'
conversion.
- To prevent confusion among people that want to hack on libteken:
unlike syscons, the state machines that parse the escape sequences are
machine generated. This means that if you want to add new escape
sequences, you have to add an entry to the `sequences' file. This will
cause new entries to be added to `teken_state.h'.
- Any rendering artifacts that didn't occur prior to this commit are by
accident. They should be reported to me, so I can fix them.
Discussed on: current@, hackers@
Discussed with: philip (at 25C3)
2009-01-01 13:26:53 +00:00
|
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|
/* Character that blanks a cell. */
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#define BLANK ' '
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static teken_state_t teken_state_init;
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/*
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* Wrappers for hooks.
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*/
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static inline void
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teken_funcs_bell(teken_t *t)
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{
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t->t_funcs->tf_bell(t->t_softc);
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}
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static inline void
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teken_funcs_cursor(teken_t *t)
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{
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teken_assert(t->t_cursor.tp_row < t->t_winsize.tp_row);
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teken_assert(t->t_cursor.tp_col < t->t_winsize.tp_col);
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|
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t->t_funcs->tf_cursor(t->t_softc, &t->t_cursor);
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}
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static inline void
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teken_funcs_putchar(teken_t *t, const teken_pos_t *p, teken_char_t c,
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const teken_attr_t *a)
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{
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|
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teken_attr_t ta;
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|
|
|
|
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teken_assert(p->tp_row < t->t_winsize.tp_row);
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teken_assert(p->tp_col < t->t_winsize.tp_col);
|
|
|
|
|
|
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|
/* Apply inversion. */
|
|
|
|
if (a->ta_format & TF_REVERSE) {
|
|
|
|
ta.ta_format = a->ta_format;
|
|
|
|
ta.ta_fgcolor = a->ta_bgcolor;
|
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|
|
ta.ta_bgcolor = a->ta_fgcolor;
|
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|
|
a = &ta;
|
|
|
|
}
|
|
|
|
|
|
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|
t->t_funcs->tf_putchar(t->t_softc, p, c, a);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void
|
|
|
|
teken_funcs_fill(teken_t *t, const teken_rect_t *r,
|
|
|
|
const teken_char_t c, const teken_attr_t *a)
|
|
|
|
{
|
|
|
|
teken_attr_t ta;
|
|
|
|
|
|
|
|
teken_assert(r->tr_end.tp_row > r->tr_begin.tp_row);
|
|
|
|
teken_assert(r->tr_end.tp_row <= t->t_winsize.tp_row);
|
|
|
|
teken_assert(r->tr_end.tp_col > r->tr_begin.tp_col);
|
|
|
|
teken_assert(r->tr_end.tp_col <= t->t_winsize.tp_col);
|
|
|
|
|
|
|
|
/* Apply inversion. */
|
|
|
|
if (a->ta_format & TF_REVERSE) {
|
|
|
|
ta.ta_format = a->ta_format;
|
|
|
|
ta.ta_fgcolor = a->ta_bgcolor;
|
|
|
|
ta.ta_bgcolor = a->ta_fgcolor;
|
|
|
|
a = &ta;
|
|
|
|
}
|
|
|
|
|
|
|
|
t->t_funcs->tf_fill(t->t_softc, r, c, a);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void
|
|
|
|
teken_funcs_copy(teken_t *t, const teken_rect_t *r, const teken_pos_t *p)
|
|
|
|
{
|
|
|
|
|
|
|
|
teken_assert(r->tr_end.tp_row > r->tr_begin.tp_row);
|
|
|
|
teken_assert(r->tr_end.tp_row <= t->t_winsize.tp_row);
|
|
|
|
teken_assert(r->tr_end.tp_col > r->tr_begin.tp_col);
|
|
|
|
teken_assert(r->tr_end.tp_col <= t->t_winsize.tp_col);
|
|
|
|
teken_assert(p->tp_row + (r->tr_end.tp_row - r->tr_begin.tp_row) <= t->t_winsize.tp_row);
|
|
|
|
teken_assert(p->tp_col + (r->tr_end.tp_col - r->tr_begin.tp_col) <= t->t_winsize.tp_col);
|
|
|
|
|
|
|
|
t->t_funcs->tf_copy(t->t_softc, r, p);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void
|
|
|
|
teken_funcs_param(teken_t *t, int cmd, int value)
|
|
|
|
{
|
|
|
|
|
|
|
|
t->t_funcs->tf_param(t->t_softc, cmd, value);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void
|
|
|
|
teken_funcs_respond(teken_t *t, const void *buf, size_t len)
|
|
|
|
{
|
|
|
|
|
|
|
|
t->t_funcs->tf_respond(t->t_softc, buf, len);
|
|
|
|
}
|
|
|
|
|
|
|
|
#include "teken_subr.h"
|
|
|
|
#include "teken_subr_compat.h"
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Programming interface.
|
|
|
|
*/
|
|
|
|
|
|
|
|
void
|
|
|
|
teken_init(teken_t *t, const teken_funcs_t *tf, void *softc)
|
|
|
|
{
|
|
|
|
teken_pos_t tp = { .tp_row = 24, .tp_col = 80 };
|
|
|
|
|
|
|
|
#if !(defined(__FreeBSD__) && defined(_KERNEL))
|
|
|
|
df = fopen("teken.log", "w");
|
|
|
|
if (df != NULL)
|
|
|
|
setvbuf(df, NULL, _IOLBF, BUFSIZ);
|
|
|
|
#endif /* !(__FreeBSD__ && _KERNEL) */
|
|
|
|
|
|
|
|
t->t_funcs = tf;
|
|
|
|
t->t_softc = softc;
|
|
|
|
|
|
|
|
t->t_nextstate = teken_state_init;
|
|
|
|
|
|
|
|
t->t_defattr.ta_format = 0;
|
|
|
|
t->t_defattr.ta_fgcolor = TC_WHITE;
|
|
|
|
t->t_defattr.ta_bgcolor = TC_BLACK;
|
|
|
|
teken_subr_do_reset(t);
|
|
|
|
|
|
|
|
#ifdef TEKEN_UTF8
|
|
|
|
t->t_utf8_left = 0;
|
|
|
|
#endif /* TEKEN_UTF8 */
|
|
|
|
|
|
|
|
teken_set_winsize(t, &tp);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
teken_input_char(teken_t *t, teken_char_t c)
|
|
|
|
{
|
|
|
|
|
|
|
|
switch (c) {
|
|
|
|
case '\0':
|
|
|
|
break;
|
|
|
|
case '\a':
|
|
|
|
teken_subr_bell(t);
|
|
|
|
break;
|
|
|
|
case '\b':
|
|
|
|
teken_subr_backspace(t);
|
|
|
|
break;
|
|
|
|
case '\n':
|
|
|
|
case '\x0B':
|
|
|
|
teken_subr_newline(t);
|
|
|
|
break;
|
|
|
|
case '\r':
|
|
|
|
teken_subr_carriage_return(t);
|
|
|
|
break;
|
|
|
|
case '\t':
|
|
|
|
teken_subr_horizontal_tab(t);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
t->t_nextstate(t, c);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Post-processing assertions. */
|
|
|
|
teken_assert(t->t_cursor.tp_row >= t->t_originreg.ts_begin);
|
|
|
|
teken_assert(t->t_cursor.tp_row < t->t_originreg.ts_end);
|
|
|
|
teken_assert(t->t_cursor.tp_row < t->t_winsize.tp_row);
|
|
|
|
teken_assert(t->t_cursor.tp_col < t->t_winsize.tp_col);
|
|
|
|
teken_assert(t->t_saved_cursor.tp_row < t->t_winsize.tp_row);
|
|
|
|
teken_assert(t->t_saved_cursor.tp_col < t->t_winsize.tp_col);
|
|
|
|
teken_assert(t->t_scrollreg.ts_end <= t->t_winsize.tp_row);
|
|
|
|
teken_assert(t->t_scrollreg.ts_begin < t->t_scrollreg.ts_end);
|
|
|
|
/* Origin region has to be window size or the same as scrollreg. */
|
|
|
|
teken_assert((t->t_originreg.ts_begin == t->t_scrollreg.ts_begin &&
|
|
|
|
t->t_originreg.ts_end == t->t_scrollreg.ts_end) ||
|
|
|
|
(t->t_originreg.ts_begin == 0 &&
|
|
|
|
t->t_originreg.ts_end == t->t_winsize.tp_row));
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
teken_input_byte(teken_t *t, unsigned char c)
|
|
|
|
{
|
|
|
|
|
|
|
|
#ifdef TEKEN_UTF8
|
|
|
|
/*
|
|
|
|
* UTF-8 handling.
|
|
|
|
*/
|
|
|
|
if ((c & 0x80) == 0x00) {
|
|
|
|
/* One-byte sequence. */
|
|
|
|
t->t_utf8_left = 0;
|
|
|
|
teken_input_char(t, c);
|
|
|
|
} else if ((c & 0xe0) == 0xc0) {
|
|
|
|
/* Two-byte sequence. */
|
|
|
|
t->t_utf8_left = 1;
|
|
|
|
t->t_utf8_partial = c & 0x1f;
|
|
|
|
} else if ((c & 0xf0) == 0xe0) {
|
|
|
|
/* Three-byte sequence. */
|
|
|
|
t->t_utf8_left = 2;
|
|
|
|
t->t_utf8_partial = c & 0x0f;
|
|
|
|
} else if ((c & 0xf8) == 0xf0) {
|
|
|
|
/* Four-byte sequence. */
|
|
|
|
t->t_utf8_left = 3;
|
|
|
|
t->t_utf8_partial = c & 0x07;
|
|
|
|
} else if ((c & 0xc0) == 0x80) {
|
|
|
|
if (t->t_utf8_left == 0)
|
|
|
|
return;
|
|
|
|
t->t_utf8_left--;
|
|
|
|
t->t_utf8_partial = (t->t_utf8_partial << 6) | (c & 0x3f);
|
|
|
|
if (t->t_utf8_left == 0) {
|
|
|
|
teken_printf("Got UTF-8 char %u\n", t->t_utf8_partial);
|
|
|
|
teken_input_char(t, t->t_utf8_partial);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#else /* !TEKEN_UTF8 */
|
|
|
|
teken_input_char(t, c);
|
|
|
|
#endif /* TEKEN_UTF8 */
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
teken_input(teken_t *t, const void *buf, size_t len)
|
|
|
|
{
|
|
|
|
const char *c = buf;
|
|
|
|
|
|
|
|
while (len-- > 0)
|
|
|
|
teken_input_byte(t, *c++);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
teken_set_cursor(teken_t *t, const teken_pos_t *p)
|
|
|
|
{
|
|
|
|
|
|
|
|
/* XXX: bounds checking with originreg! */
|
|
|
|
teken_assert(p->tp_row < t->t_winsize.tp_row);
|
|
|
|
teken_assert(p->tp_col < t->t_winsize.tp_col);
|
|
|
|
|
|
|
|
t->t_cursor = *p;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
teken_set_defattr(teken_t *t, const teken_attr_t *a)
|
|
|
|
{
|
|
|
|
|
|
|
|
t->t_curattr = t->t_saved_curattr = t->t_defattr = *a;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
teken_set_winsize(teken_t *t, const teken_pos_t *p)
|
|
|
|
{
|
|
|
|
|
|
|
|
teken_assert(p->tp_col <= T_NUMCOL);
|
|
|
|
|
|
|
|
t->t_winsize = *p;
|
|
|
|
/* XXX: bounds checking with cursor/etc! */
|
|
|
|
t->t_scrollreg.ts_begin = 0;
|
|
|
|
t->t_scrollreg.ts_end = t->t_winsize.tp_row;
|
|
|
|
t->t_originreg = t->t_scrollreg;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* State machine.
|
|
|
|
*/
|
|
|
|
|
|
|
|
static void
|
|
|
|
teken_state_switch(teken_t *t, teken_state_t *s)
|
|
|
|
{
|
|
|
|
|
|
|
|
t->t_nextstate = s;
|
|
|
|
t->t_curnum = 0;
|
|
|
|
t->t_stateflags |= TS_FIRSTDIGIT;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
teken_state_numbers(teken_t *t, teken_char_t c)
|
|
|
|
{
|
|
|
|
|
|
|
|
teken_assert(t->t_curnum < T_NUMSIZE);
|
|
|
|
|
|
|
|
if (c >= '0' && c <= '9') {
|
|
|
|
/*
|
|
|
|
* Don't do math with the default value of 1 when a
|
|
|
|
* custom number is inserted.
|
|
|
|
*/
|
|
|
|
if (t->t_stateflags & TS_FIRSTDIGIT) {
|
|
|
|
t->t_stateflags &= ~TS_FIRSTDIGIT;
|
|
|
|
t->t_nums[t->t_curnum] = 0;
|
|
|
|
} else {
|
|
|
|
t->t_nums[t->t_curnum] *= 10;
|
|
|
|
}
|
|
|
|
|
|
|
|
t->t_nums[t->t_curnum] += c - '0';
|
|
|
|
return (1);
|
|
|
|
} else if (c == ';') {
|
|
|
|
if (t->t_stateflags & TS_FIRSTDIGIT)
|
|
|
|
t->t_nums[t->t_curnum] = 0;
|
|
|
|
|
|
|
|
/* Only allow a limited set of arguments. */
|
|
|
|
if (++t->t_curnum == T_NUMSIZE) {
|
|
|
|
teken_state_switch(t, teken_state_init);
|
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
|
|
|
|
t->t_stateflags |= TS_FIRSTDIGIT;
|
|
|
|
return (1);
|
|
|
|
} else {
|
|
|
|
if (t->t_stateflags & TS_FIRSTDIGIT && t->t_curnum > 0) {
|
|
|
|
/* Finish off the last empty argument. */
|
|
|
|
t->t_nums[t->t_curnum] = 0;
|
|
|
|
t->t_curnum++;
|
|
|
|
} else if ((t->t_stateflags & TS_FIRSTDIGIT) == 0) {
|
|
|
|
/* Also count the last argument. */
|
|
|
|
t->t_curnum++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
#include "teken_state.h"
|