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nuttx-apps/system/termcurses/tcurses_vt100.c
lilei19 41f60bd669 change strcpy to strlcpy 
Change-Id: I8b9429a3c225a82842fce136bdb14b8b135066d3
Signed-off-by: lilei19 <lilei19@xiaomi.com>
2023-02-22 23:09:55 +08:00

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/************************************************************************************
* apps/system/termcurses/tcurses_vt100.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
************************************************************************************/
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <sys/select.h>
#include <sys/time.h>
#include <stdint.h>
#include <stdbool.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include <debug.h>
#include <stdio.h>
#include <stdlib.h>
#include "tcurses_priv.h"
#include "graphics/curses.h"
#include <sys/ioctl.h>
#include <nuttx/kmalloc.h>
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
#define KEY_DOWN 0x102 /* Down arrow key */
#define KEY_UP 0x103 /* Up arrow key */
#define KEY_LEFT 0x104 /* Left arrow key */
#define KEY_RIGHT 0x105 /* Right arrow key */
#define KEY_HOME 0x106 /* home key */
#define KEY_F0 0x108 /* function keys; 64 reserved */
#ifdef CONFIG_TERMINFO_INCLUDE_NAME
#define TINFO_ENTRY(n, d, c) n, d, c
#else
#define TINFO_ENTRY(n, d, c) d, c
#endif
/************************************************************************************
* Private Types
************************************************************************************/
struct tcurses_vt100_s
{
struct termcurses_dev_s dev; /* The parent TermCurses struct */
/* Other control variables go here */
int in_fd;
int out_fd;
int keycount;
char keybuf[16];
};
/************************************************************************************
* Private Function Prototypes
************************************************************************************/
static FAR struct termcurses_s *tcurses_vt100_initialize(int in_fd, int out_fd);
static int tcurses_vt100_clear(FAR struct termcurses_s *dev, int type);
static int tcurses_vt100_move(FAR struct termcurses_s *dev, int type, int col,
int row);
static int tcurses_vt100_getwinsize(FAR struct termcurses_s *dev,
FAR struct winsize *winsz);
static int tcurses_vt100_setcolors(FAR struct termcurses_s *dev,
FAR struct termcurses_colors_s *colors);
static int tcurses_vt100_setattributes(FAR struct termcurses_s *dev,
unsigned long attrib);
static int tcurses_vt100_getkeycode(FAR struct termcurses_s *dev,
FAR int *specialkey, FAR int *keymodifers);
static bool tcurses_vt100_checkkey(FAR struct termcurses_s *dev);
static int tcurses_vt100_terminate(FAR struct termcurses_s *dev);
/************************************************************************************
* Private Data
************************************************************************************/
static const struct termcurses_ops_s g_vt100_ops =
{
tcurses_vt100_initialize, /* Initialize operator */
tcurses_vt100_clear,
tcurses_vt100_move,
tcurses_vt100_getwinsize,
tcurses_vt100_setcolors,
tcurses_vt100_setattributes,
tcurses_vt100_getkeycode,
tcurses_vt100_checkkey,
tcurses_vt100_terminate
};
/* VT100 terminal codes */
static const char *g_clrscr = "\033[2J"; /* Clear screen */
static const char *g_clreos = "\033[J"; /* Clear to end of screen */
static const char *g_clreol = "\033[K"; /* Clear to end of line */
static const char *g_movecurs = "\033[%d;%dH"; /* Move cursor to x,y */
static const char *g_getwinsize = "\x1b[s\x1b[999;999H\x1b[6n\x1bu";
static const char *g_setfgcolor = "\x1b[38;5;%dm";
static const char *g_setbgcolor = "\x1b[48;5;%dm";
static const char *g_showcursor = "\x1b[?25h";
static const char *g_hidecursor = "\x1b[?25l";
static const char *g_setbold = "\x1b[1";
static const char *g_setnobold = "\x1b[22";
static const char *g_setblink = ";5";
static const char *g_setnoblink = ";25";
static const char *g_setunderline = ";4";
static const char *g_setnounderline = ";24";
/* Set default background and foreground colors. */
static const char *g_setdefcolors = "\x1b[39;m\x1b[49;m";
struct keycodes_s
{
#ifdef CONFIG_TERMCURSES_INCLUDE_TERMINFO_NAME
const char *terminfo_name;
#endif
const char *def;
int keycode;
};
static const uint16_t g_key_modifiers[][2] =
{
{
KEY_PPAGE | (PDC_KEY_MODIFIER_ALT << 12), ALT_PGDN
},
{
KEY_NPAGE | (PDC_KEY_MODIFIER_ALT << 12), ALT_PGUP
},
{
KEY_UP | (PDC_KEY_MODIFIER_SHIFT << 12), KEY_SUP
},
{
KEY_DOWN | (PDC_KEY_MODIFIER_SHIFT << 12), KEY_SDOWN
},
{
KEY_LEFT | (PDC_KEY_MODIFIER_SHIFT << 12), KEY_SLEFT
},
{
KEY_RIGHT | (PDC_KEY_MODIFIER_SHIFT << 12), KEY_SRIGHT
},
{
KEY_UP | (PDC_KEY_MODIFIER_CONTROL << 12), CTL_UP
},
{
KEY_DOWN | (PDC_KEY_MODIFIER_CONTROL << 12), CTL_DOWN
},
{
KEY_LEFT | (PDC_KEY_MODIFIER_CONTROL << 12), CTL_LEFT
},
{
KEY_RIGHT | (PDC_KEY_MODIFIER_CONTROL << 12), CTL_RIGHT
},
{
KEY_DC | (PDC_KEY_MODIFIER_SHIFT << 12), KEY_SDC
},
{
KEY_DC | (PDC_KEY_MODIFIER_ALT << 12), ALT_DEL
},
{
KEY_DC | (PDC_KEY_MODIFIER_CONTROL << 12), CTL_DEL
},
{
KEY_IC | (PDC_KEY_MODIFIER_ALT << 12), ALT_INS
}
};
static const int g_key_modifier_count =
sizeof(g_key_modifiers) / (sizeof(uint16_t)*2);
static const struct keycodes_s g_esc_keycodes[] =
{
/* terminfo pdcurses
* name definition key code
*/
{
TINFO_ENTRY("kcuu1", "[A", KEY_UP)
}, /* Up Arrow */
{
TINFO_ENTRY("kcud1", "[B", KEY_DOWN)
}, /* Down Arrow */
{
TINFO_ENTRY("kcuf1", "[C", KEY_RIGHT)
}, /* Right Arrow */
{
TINFO_ENTRY("kcub1", "[D", KEY_LEFT)
}, /* Left Arrow */
{
TINFO_ENTRY("knp", "[6~", KEY_NPAGE)
}, /* Next Page Key */
{
TINFO_ENTRY("kpp", "[5~", KEY_PPAGE)
}, /* Prev Page Key */
{
TINFO_ENTRY("khom", "OH", KEY_HOME)
}, /* Home Key */
{
TINFO_ENTRY("kend", "OF", KEY_END)
}, /* Home Key */
{
TINFO_ENTRY("kcab1", "b", ALT_LEFT)
}, /* Alt Left arrow Key */
{
TINFO_ENTRY("kcaf1", "f", ALT_RIGHT)
}, /* Alt Right arrow Key */
{
TINFO_ENTRY("kprt", "[25~", KEY_PRINT)
}, /* Print-screen Key */
{
TINFO_ENTRY("kdc", "[3~", KEY_DC)
}, /* Delete char key */
{
TINFO_ENTRY("kic", "[2~", KEY_IC)
}, /* Insert Key */
{
TINFO_ENTRY("kacr", "\x1a", ALT_ENTER)
}, /* ALT-Enter Key */
{
TINFO_ENTRY("kTAB", "[Z", KEY_STAB)
}, /* SHIFT-tab Key */
{
TINFO_ENTRY("kf1", "OP", KEY_F(1))
}, /* F1 Key */
{
TINFO_ENTRY("kf2", "OQ", KEY_F(2))
}, /* F2 Key */
{
TINFO_ENTRY("kf3", "OR", KEY_F(3))
}, /* F3 Key */
{
TINFO_ENTRY("kf4", "OS", KEY_F(4))
}, /* F4 Key */
{
TINFO_ENTRY("kf5", "[15~", KEY_F(5))
}, /* F5 Key */
{
TINFO_ENTRY("kf6", "[17~", KEY_F(6))
}, /* F6 Key */
{
TINFO_ENTRY("kf7", "[18~", KEY_F(7))
}, /* F7 Key */
{
TINFO_ENTRY("kf8", "[19~", KEY_F(8))
}, /* F8 Key */
{
TINFO_ENTRY("kf9", "[20~", KEY_F(9))
}, /* F9 Key */
{
TINFO_ENTRY("kf10", "[21~", KEY_F(10))
}, /* F10 Key */
{
TINFO_ENTRY("kf11", "[22~", KEY_F(11))
}, /* F11 Key */
{
TINFO_ENTRY("kf12", "[24~", KEY_F(12))
}, /* F12 Key */
{
TINFO_ENTRY("", "Oq", KEY_C1)
}, /* Lower left PAD Key */
{
TINFO_ENTRY("", "Or", KEY_C2)
}, /* Lower middle PAD Key */
{
TINFO_ENTRY("", "Os", KEY_C3)
}, /* Lower right PAD Key */
{
TINFO_ENTRY("", "Ot", KEY_B1)
}, /* Middle left PAD Key */
{
TINFO_ENTRY("", "Ou", KEY_B2)
}, /* Middle middle PAD Key */
{
TINFO_ENTRY("", "Ov", KEY_B3)
}, /* Middle right PAD Key */
{
TINFO_ENTRY("", "Ow", KEY_A1)
}, /* Upper left PAD Key */
{
TINFO_ENTRY("", "Ox", KEY_A2)
}, /* Upper middle PAD Key */
{
TINFO_ENTRY("", "Oy", KEY_A3)
}, /* Upper right PAD Key */
{
TINFO_ENTRY("", "a", ALT_A)
}, /* ALT-A key */
{
TINFO_ENTRY("", "b", ALT_B)
}, /* ALT-B key */
{
TINFO_ENTRY("", "c", ALT_C)
}, /* ALT-C key */
{
TINFO_ENTRY("", "d", ALT_D)
}, /* ALT-D key */
{
TINFO_ENTRY("", "e", ALT_E)
}, /* ALT-E key */
{
TINFO_ENTRY("", "f", ALT_F)
}, /* ALT-F key */
{
TINFO_ENTRY("", "g", ALT_G)
}, /* ALT-G key */
{
TINFO_ENTRY("", "h", ALT_H)
}, /* ALT-H key */
{
TINFO_ENTRY("", "i", ALT_I)
}, /* ALT-I key */
{
TINFO_ENTRY("", "j", ALT_J)
}, /* ALT-J key */
{
TINFO_ENTRY("", "k", ALT_K)
}, /* ALT-K key */
{
TINFO_ENTRY("", "l", ALT_L)
}, /* ALT-L key */
{
TINFO_ENTRY("", "m", ALT_M)
}, /* ALT-M key */
{
TINFO_ENTRY("", "n", ALT_N)
}, /* ALT-N key */
{
TINFO_ENTRY("", "o", ALT_O)
}, /* ALT-O key */
{
TINFO_ENTRY("", "p", ALT_P)
}, /* ALT-P key */
{
TINFO_ENTRY("", "q", ALT_Q)
}, /* ALT-Q key */
{
TINFO_ENTRY("", "r", ALT_R)
}, /* ALT-R key */
{
TINFO_ENTRY("", "s", ALT_S)
}, /* ALT-S key */
{
TINFO_ENTRY("", "t", ALT_T)
}, /* ALT-T key */
{
TINFO_ENTRY("", "u", ALT_U)
}, /* ALT-U key */
{
TINFO_ENTRY("", "v", ALT_V)
}, /* ALT-V key */
{
TINFO_ENTRY("", "w", ALT_W)
}, /* ALT-W key */
{
TINFO_ENTRY("", "x", ALT_X)
}, /* ALT-X key */
{
TINFO_ENTRY("", "y", ALT_Y)
}, /* ALT-Y key */
{
TINFO_ENTRY("", "z", ALT_Z)
}, /* ALT-Z key */
{ TINFO_ENTRY("", "0", ALT_0)
}, /* ALT-0 key */
{ TINFO_ENTRY("", "1", ALT_1)
}, /* ALT-1 key */
{ TINFO_ENTRY("", "2", ALT_2)
}, /* ALT-2 key */
{ TINFO_ENTRY("", "3", ALT_3)
}, /* ALT-3 key */
{ TINFO_ENTRY("", "4", ALT_4)
}, /* ALT-4 key */
{ TINFO_ENTRY("", "5", ALT_5)
}, /* ALT-5 key */
{ TINFO_ENTRY("", "6", ALT_6)
}, /* ALT-6 key */
{ TINFO_ENTRY("", "7", ALT_7)
}, /* ALT-7 key */
{ TINFO_ENTRY("", "8", ALT_8)
}, /* ALT-8 key */
{ TINFO_ENTRY("", "9", ALT_9)
}, /* ALT-9 key */
{
TINFO_ENTRY("", "-", ALT_MINUS)
}, /* ALT-- key */
{
TINFO_ENTRY("", "+", ALT_PLUS)
}, /* ALT-+ key */
{
TINFO_ENTRY("", "=", ALT_EQUAL)
}, /* ALT-= key */
{
TINFO_ENTRY("", ",", ALT_COMMA)
}, /* ALT-, key */
{
TINFO_ENTRY("", ".", ALT_PERIOD)
}, /* ALT-. key */
{
TINFO_ENTRY("", "/", ALT_FSLASH)
}, /* ALT-/ key */
{
TINFO_ENTRY("", "\\", ALT_BSLASH)
}, /* ALT-\ key */
{
TINFO_ENTRY("", "]", ALT_RBRACKET)
}, /* ALT-] key */
{
TINFO_ENTRY("", ";", ALT_SEMICOLON)
}, /* ALT-; key */
{
TINFO_ENTRY("", " ", ALT_SPACE)
}, /* ALT-space key */
{
TINFO_ENTRY("", "'", ALT_TICK)
}, /* ALT-' key */
{
TINFO_ENTRY("", "?", ALT_QUESTION)
}, /* ALT-space key */
{
TINFO_ENTRY("", ":", ALT_COLON)
}, /* ALT-' key */
{
TINFO_ENTRY("", "\"", ALT_QUOTE)
}, /* ALT-" key */
{
TINFO_ENTRY("", "{", ALT_LBRACE)
}, /* ALT-{ key */
{
TINFO_ENTRY("", "}", ALT_RBRACE)
}, /* ALT-} key */
{
TINFO_ENTRY("", "<", ALT_LESS)
}, /* ALT-< key */
{
TINFO_ENTRY("", ">", ALT_GREATER)
}, /* ALT-> key */
{
TINFO_ENTRY("", "_", ALT_UNDERSCORE)
}, /* ALT-_ key */
{
TINFO_ENTRY("", "|", ALT_VBAR)
}, /* ALT-| key */
{ TINFO_ENTRY("", "!", ALT_EXCL)
}, /* ALT-! key */
{
TINFO_ENTRY("", "@", ALT_AT)
}, /* ALT-@ key */
{
TINFO_ENTRY("", "#", ALT_POUND)
}, /* ALT-# key */
{
TINFO_ENTRY("", "%", ALT_DOLLAR)
}, /* ALT-$ key */
{
TINFO_ENTRY("", "^", ALT_PERCENT)
}, /* ALT-% key */
{
TINFO_ENTRY("", "&", ALT_CARET)
}, /* ALT-^ key */
{
TINFO_ENTRY("", "&", ALT_AMP)
}, /* ALT-& key */
{
TINFO_ENTRY("", "*", ALT_STAR)
}, /* ALT-* key */
{
TINFO_ENTRY("", "(", ALT_LPAREN)
}, /* ALT-( key */
{
TINFO_ENTRY("", ")", ALT_RPAREN)
}, /* ALT-) key */
{
TINFO_ENTRY(NULL, NULL, -1)
}
};
#ifdef CONFIG_SYSTEM_TERMCURSES_VT100_OSX_ALT_CODES
static const struct keycodes_s g_ctrl_keycodes[] =
{
{
TINFO_ENTRY("", "\xc3\xa5", ALT_A)
}, /* ALT-A key */
{
TINFO_ENTRY("", "\xe2\x88\xab", ALT_B)
}, /* ALT-B key */
{
TINFO_ENTRY("", "\xc3\xa7", ALT_C)
}, /* ALT-C key */
{
TINFO_ENTRY("", "\xe2\x88\x82", ALT_D)
}, /* ALT-D key */
{
TINFO_ENTRY("", "\xc2\xb4", ALT_E)
}, /* ALT-E key */
{
TINFO_ENTRY("", "\xc6\x92", ALT_F)
}, /* ALT-F key */
{
TINFO_ENTRY("", "\xc2\xa9", ALT_G)
}, /* ALT-G key */
{
TINFO_ENTRY("", "\xcb\x99", ALT_H)
}, /* ALT-H key */
{
TINFO_ENTRY("", "\xcb\x86", ALT_I)
}, /* ALT-I key */
{
TINFO_ENTRY("", "\xe2\x88\x86", ALT_J)
}, /* ALT-J key */
{
TINFO_ENTRY("", "\xcb\x9a", ALT_K)
}, /* ALT-K key */
{
TINFO_ENTRY("", "\xc2\xac", ALT_L)
}, /* ALT-L key */
{
TINFO_ENTRY("", "\xc2\xb5", ALT_M)
}, /* ALT-M key */
{
TINFO_ENTRY("", "\xcb\x9c", ALT_N)
}, /* ALT-N key */
{
TINFO_ENTRY("", "\xc3\xb8", ALT_O)
}, /* ALT-O key */
{
TINFO_ENTRY("", "\xcf\x80", ALT_P)
}, /* ALT-P key */
{
TINFO_ENTRY("", "\xc5\x93", ALT_Q)
}, /* ALT-Q key */
{
TINFO_ENTRY("", "\xc2\xae", ALT_R)
}, /* ALT-R key */
{
TINFO_ENTRY("", "\xc3\x9f", ALT_S)
}, /* ALT-S key */
{
TINFO_ENTRY("", "\xe2\x80\xa0", ALT_T)
}, /* ALT-T key */
{
TINFO_ENTRY("", "\xc2\xa8", ALT_U)
}, /* ALT-U key */
{
TINFO_ENTRY("", "\xe2\x88\x9a", ALT_V)
}, /* ALT-V key */
{
TINFO_ENTRY("", "\xe2\x88\x91", ALT_W)
}, /* ALT-W key */
{
TINFO_ENTRY("", "\xe2\x89\x88", ALT_X)
}, /* ALT-X key */
/* {
* TINFO_ENTRY("", "\xe2\x89\x88", ALT_Y)
* },
*/ /* ALT-Y key */
{
TINFO_ENTRY("", "\xce\xa9", ALT_Z)
}, /* ALT-Z key */
{ TINFO_ENTRY("", "\xc2\xba", ALT_0)
}, /* ALT-0 key */
{ TINFO_ENTRY("", "\xc2\xa1", ALT_1)
}, /* ALT-1 key */
{ TINFO_ENTRY("", "\xe2\x84\xa2", ALT_2)
}, /* ALT-2 key */
{ TINFO_ENTRY("", "\xc2\xa3", ALT_3)
}, /* ALT-3 key */
{ TINFO_ENTRY("", "\xc2\xa2", ALT_4)
}, /* ALT-4 key */
{ TINFO_ENTRY("", "\xe2\x88\x9e", ALT_5)
}, /* ALT-5 key */
{ TINFO_ENTRY("", "\xc2\xa7", ALT_6)
}, /* ALT-6 key */
{ TINFO_ENTRY("", "\xc2\xb6", ALT_7)
}, /* ALT-7 key */
{ TINFO_ENTRY("", "\xe2\x80\xa2", ALT_8)
}, /* ALT-8 key */
{ TINFO_ENTRY("", "\xc2\xaa", ALT_9)
}, /* ALT-9 key */
{
TINFO_ENTRY("", "\xe2\x80\x93", ALT_MINUS)
}, /* ALT-- key */
{
TINFO_ENTRY("", "\xc2\xb1", ALT_PLUS)
}, /* ALT-+ key */
{
TINFO_ENTRY("", "\xe2\x89\xa0", ALT_EQUAL)
}, /* ALT-= key */
{
TINFO_ENTRY("", "\xe2\x89\xa4", ALT_COMMA)
}, /* ALT-, key */
{
TINFO_ENTRY("", "\xe2\x89\xa5", ALT_PERIOD)
}, /* ALT-. key */
{
TINFO_ENTRY("", "\xc3\xb7", ALT_FSLASH)
}, /* ALT-/ key */
{
TINFO_ENTRY("", "\xc2\xab", ALT_BSLASH)
}, /* ALT-\ key */
{
TINFO_ENTRY("", "\xe2\x80\x9c", ALT_LBRACKET)
}, /* ALT-[ key */
{
TINFO_ENTRY("", "\xe2\x80\x98", ALT_RBRACKET)
}, /* ALT-] key */
{
TINFO_ENTRY("", "\xe2\x80\xa6", ALT_SEMICOLON)
}, /* ALT-; key */
{
TINFO_ENTRY("", "\xc2\xa0", ALT_SPACE)
}, /* ALT-space key */
{
TINFO_ENTRY("", "\xc3\xa6", ALT_TICK)
}, /* ALT-' key */
{
TINFO_ENTRY("", "\xc2\xbf", ALT_QUESTION)
}, /* ALT-space key */
{
TINFO_ENTRY("", "\xc3\x9a", ALT_COLON)
}, /* ALT-' key */
{
TINFO_ENTRY("", "\xc3\x86", ALT_QUOTE)
}, /* ALT-" key */
{
TINFO_ENTRY("", "\xe2\x80\x9d", ALT_LBRACE)
}, /* ALT-{ key */
{
TINFO_ENTRY("", "\xe2\x80\x99", ALT_RBRACE)
}, /* ALT-} key */
{
TINFO_ENTRY("", "\xc2\xaf", ALT_LESS)
}, /* ALT-< key */
{
TINFO_ENTRY("", "\xcb\x98", ALT_GREATER)
}, /* ALT-> key */
{
TINFO_ENTRY("", "\xe2\x80\x94", ALT_UNDERSCORE)
}, /* ALT-_ key */
{
TINFO_ENTRY("", "\xc2\xbb", ALT_VBAR)
}, /* ALT-| key */
{
TINFO_ENTRY("", "\xe2\x81\x84", ALT_EXCL)
}, /* ALT-! key */
{
TINFO_ENTRY("", "\xe2\x82\xac", ALT_AT)
}, /* ALT-@ key */
{
TINFO_ENTRY("", "\xe2\x80\xb9", ALT_POUND)
}, /* ALT-# key */
{
TINFO_ENTRY("", "\xe2\x80\xba", ALT_DOLLAR)
}, /* ALT-$ key */
{
TINFO_ENTRY("", "\xef\xac\x81", ALT_PERCENT)
}, /* ALT-% key */
{
TINFO_ENTRY("", "\xef\xac\x82", ALT_CARET)
}, /* ALT-^ key */
{
TINFO_ENTRY("", "\xe2\x80\xa1", ALT_AMP)
}, /* ALT-& key */
{
TINFO_ENTRY("", "\xc2\xb0", ALT_STAR)
}, /* ALT-* key */
{
TINFO_ENTRY("", "\xc2\xb7", ALT_LPAREN)
}, /* ALT-( key */
{
TINFO_ENTRY("", "\xe2\x80\x9a", ALT_RPAREN)
}, /* ALT-) key */
{
TINFO_ENTRY(NULL, NULL, -1)
}
};
#endif /* CONFIG_SYSTEM_TERMCURSES_VT100_OSX_ALT_CODES */
/************************************************************************************
* Public Data
************************************************************************************/
struct termcurses_dev_s g_vt100_tcurs =
{
&g_vt100_ops, /* Operations pointer */
NULL, /* Next pointer */
"vt100, vt102, ansi" /* List of supported terminals */
};
/************************************************************************************
* Private Functions
************************************************************************************/
/************************************************************************************
* Clear screen / line operations
************************************************************************************/
static int tcurses_vt100_clear(FAR struct termcurses_s *dev, int type)
{
FAR struct tcurses_vt100_s *priv;
int ret = -ENOSYS;
int fd;
priv = (FAR struct tcurses_vt100_s *)dev;
fd = priv->out_fd;
/* Perform operation based on type */
switch (type)
{
case TCURS_CLEAR_SCREEN:
ret = write(fd, g_clrscr, strlen(g_clrscr));
break;
case TCURS_CLEAR_LINE:
break;
case TCURS_CLEAR_EOS:
ret = write(fd, g_clrscr, strlen(g_clreos));
break;
case TCURS_CLEAR_EOL:
ret = write(fd, g_clrscr, strlen(g_clreol));
break;
default:
return -ENOSYS;
}
/* If data written successfully, return OK */
if (ret > 0)
{
ret = OK;
}
return ret;
}
/************************************************************************************
* Move cursor operations
************************************************************************************/
static int tcurses_vt100_move(FAR struct termcurses_s *dev, int type,
int col, int row)
{
FAR struct tcurses_vt100_s *priv;
int ret = -ENOSYS;
int fd;
char str[32];
priv = (FAR struct tcurses_vt100_s *)dev;
fd = priv->out_fd;
/* Perform operation based on type */
switch (type)
{
case TCURS_MOVE_YX:
snprintf(str, sizeof(str), g_movecurs, row + 1, col + 1);
ret = write(fd, str, strlen(str));
break;
default:
return -ENOSYS;
}
/* If bytes written, return OK */
if (ret > 0)
{
ret = OK;
}
return ret;
}
/************************************************************************************
* Calculates an ANSI 256 color index based on the 24-bit RGB value given.
************************************************************************************/
static uint8_t tcurses_vt100_getcolorindex(int red, int green, int blue)
{
int r;
int g;
int b;
int index;
const uint8_t rgbvals[6] =
{
0, 95, 135, 175, 215, 255
};
/* Test for colors 0-7 */
if (red == 0 && green == 0 && blue == 0)
{
return 16;
}
if (red == 0 || red == 0xc0)
{
index = red == 0xc0 ? COLOR_RED : 0;
if (green == 0 || green == 0xc0)
{
index |= (green == 0xc0) ? COLOR_GREEN : 0;
if (blue == 0 || blue == 0xc0)
{
index |= (blue == 0xc0) ? COLOR_BLUE : 0;
return index;
}
}
}
/* Test for colors 8-15 */
if (red == 0x40 || red == 0xff)
{
index = red == 0xff ? COLOR_RED : 0;
if (green == 0x40 || green == 0xff)
{
index |= (green == 0xff) ? COLOR_GREEN : 0;
if (blue == 0x40 || blue == 0xff)
{
index |= (blue == 0xff) ? COLOR_BLUE : 0;
return index + 8;
}
}
}
/* Test for grayscale colors */
if (red == green && green == blue)
{
index = 232 + red / 11;
return index;
}
/* Must be on the 216 color (6x6x6) color cube */
for (r = 0; r < 5 && red > (rgbvals[r] + rgbvals[r + 1]) / 2; )
{
/* Nothing to do except increment */
r++;
}
for (g = 0; g < 5 && green > (rgbvals[g] + rgbvals[g + 1]) / 2; )
{
/* Nothing to do except increment */
g++;
}
for (b = 0; b < 5 && blue > (rgbvals[b] + rgbvals[b + 1]) / 2; )
{
/* Nothing to do except increment */
b++;
}
return 16 + r * 36 + g * 6 + b;
}
/************************************************************************************
* Set fg / bg colors
************************************************************************************/
static int tcurses_vt100_setcolors(FAR struct termcurses_s *dev,
FAR struct termcurses_colors_s *colors)
{
FAR struct tcurses_vt100_s *priv;
int ret = -ENOSYS;
int fd;
char str[48];
priv = (FAR struct tcurses_vt100_s *)dev;
fd = priv->out_fd;
/* Test if FG color to be set */
if ((colors->color_mask & TCURS_COLOR_FG) != 0)
{
sprintf(str, g_setfgcolor,
tcurses_vt100_getcolorindex(colors->fg_red, colors->fg_green,
colors->fg_blue));
ret = write(fd, str, strlen(str));
}
/* Test if BG color to be set */
if ((colors->color_mask & TCURS_COLOR_BG) != 0)
{
if (colors->bg_red != 0 || colors->bg_green != 0 || colors->bg_blue != 0)
{
colors->bg_red = 0;
}
sprintf(str, g_setbgcolor,
tcurses_vt100_getcolorindex(colors->bg_red, colors->bg_green,
colors->bg_blue));
ret = write(fd, str, strlen(str));
}
/* If bytes written, return OK */
if (ret > 0)
{
ret = OK;
}
return ret;
}
/************************************************************************************
* Get windows size from terminal emulator connected to serial port
************************************************************************************/
static int tcurses_vt100_getwinsize(FAR struct termcurses_s *dev,
FAR struct winsize *winsz)
{
FAR struct tcurses_vt100_s *priv;
int ret = -ENOSYS;
int fd;
char resp[64];
int flags;
int delay;
int len;
priv = (FAR struct tcurses_vt100_s *)dev;
fd = priv->out_fd;
/* First try the TIOCGWINSZ ioctl */
ret = ioctl(fd, TIOCGWINSZ, (unsigned long) winsz);
if (ret == OK)
{
return OK;
}
/* Write command to get window size */
ret = write(fd, g_getwinsize, strlen(g_getwinsize));
if (ret <= 0)
{
return ret;
}
/* Perform a non-blocking read to get return data */
flags = fcntl(fd, F_GETFL);
fcntl(fd, F_SETFL, flags | O_NONBLOCK);
delay = 0;
len = 0;
/* Loop to allow non-blocking read time to receive data */
while (delay < 50)
{
/* Perform a read */
ret = read(fd, &resp[len], sizeof(resp) - len);
if (ret > 0)
{
len += ret;
}
/* Test for completion of read */
if (len > 0 && resp[len - 1] == 'R')
{
/* Get the terminal size from the response */
if (resp[0] == '\x1b' && resp[1] == '[')
{
int x;
char ch;
resp[len] = 0;
x = 2;
while (resp[x] != ';' && resp[x] != 0)
{
x++;
}
ch = resp[x];
resp[x] = 0;
winsz->ws_row = atoi(&resp[2]);
if (ch == ';')
{
winsz->ws_col = atoi(&resp[x + 1]);
}
/* Change back to original block/non-block mode */
fcntl(fd, F_SETFL, flags);
return OK;
}
}
/* Sleep a bit to allow data to arrive */
usleep(1000);
delay++;
}
fcntl(fd, F_SETFL, flags);
return -ENOSYS;
}
/************************************************************************************
* Set display attributes
************************************************************************************/
static int tcurses_vt100_setattributes(FAR struct termcurses_s *dev,
unsigned long attrib)
{
FAR struct tcurses_vt100_s *priv;
int ret;
int fd;
char str[48];
priv = (FAR struct tcurses_vt100_s *)dev;
fd = priv->out_fd;
/* Test for cursor hide */
if (attrib & TCURS_ATTRIB_CURS_HIDE)
{
/* Send sequence to hide the cursor */
ret = write(fd, g_hidecursor, strlen(g_hidecursor));
return ret;
}
if (attrib & TCURS_ATTRIB_CURS_SHOW)
{
/* Send sequence to hide the cursor */
ret = write(fd, g_showcursor, strlen(g_showcursor));
return ret;
}
/* Build attribute string */
if (attrib & TCURS_ATTRIB_BOLD)
{
strlcpy(str, g_setbold, sizeof(str));
}
else
{
strlcpy(str, g_setnobold, sizeof(str));
}
if (attrib & TCURS_ATTRIB_BLINK)
{
strcat(str, g_setblink);
}
else
{
strcat(str, g_setnoblink);
}
if (attrib & TCURS_ATTRIB_UNDERLINE)
{
strcat(str, g_setunderline);
}
else
{
strcat(str, g_setnounderline);
}
strcat(str, "m");
ret = write(fd, str, strlen(str));
/* If bytes written, return OK */
ret = (ret > 0) ? OK : -ENOSYS;
return ret;
}
/************************************************************************************
* Get keycode from the terminal, translating special escape sequences into
* special key values.
*
************************************************************************************/
static int tcurses_vt100_getkeycode(FAR struct termcurses_s *dev,
FAR int *specialkey,
FAR int *keymodifiers)
{
FAR struct tcurses_vt100_s *priv;
FAR const struct keycodes_s *pkeycodes;
int ret;
int fd;
bool esc_seq = false;
bool ctrl_seq = false;
bool ismodifier;
int keycode;
int k;
int x;
int start;
fd_set rfds;
struct timeval tv;
char ch;
char buildkey[16];
int keybuildcount;
static const char modtable[7] =
{
PDC_KEY_MODIFIER_SHIFT,
PDC_KEY_MODIFIER_ALT,
PDC_KEY_MODIFIER_ALT | PDC_KEY_MODIFIER_SHIFT,
PDC_KEY_MODIFIER_CONTROL,
PDC_KEY_MODIFIER_CONTROL | PDC_KEY_MODIFIER_SHIFT,
PDC_KEY_MODIFIER_ALT | PDC_KEY_MODIFIER_CONTROL,
PDC_KEY_MODIFIER_ALT | PDC_KEY_MODIFIER_CONTROL | PDC_KEY_MODIFIER_SHIFT
};
priv = (FAR struct tcurses_vt100_s *)dev;
fd = priv->in_fd;
/* Watch stdin (fd 0) to see when it has input. */
FD_ZERO(&rfds);
FD_SET(0, &rfds);
/* Wait up to 1000us for next character after ESC */
tv.tv_sec = 0;
tv.tv_usec = 1000;
/* Loop until we have a valid key code, taking escape sequences into account */
keycode = -1;
*keymodifiers = 0;
*specialkey = 0;
ismodifier = false;
keybuildcount = 0;
while (keycode == -1)
{
/* Test if keybuf has unprocessed bytes */
if (priv->keycount == 0)
{
/* Get next bytes from input stream */
priv->keycount = read(fd, priv->keybuf, sizeof(priv->keybuf)-1);
if (priv->keycount <= 0)
{
return -1;
}
priv->keybuf[priv->keycount] = 0;
}
/* Loop for all bytes received */
for (x = 0; x < priv->keycount && keycode == -1; x++)
{
ch = priv->keybuf[x];
if (ch == 0 && x + 1 == priv->keycount)
{
priv->keycount = 0;
return -1;
}
/* Test for escape sequence */
if (ch == '\x1b')
{
#ifdef CONFIG_SYSTEM_TERMCURSES_DEBUG_KEYCODES
printf("<0x%02X>", ch);
fflush(stdout);
#endif
/* Mark as ESC sequence */
esc_seq = true;
ctrl_seq = false;
buildkey[0] = ch;
keybuildcount = 1;
if (x + 1 != priv->keycount)
{
continue;
}
/* Test for other characters in the queue. If there are more
* characters waiting, then simply continue the loop to process
* them.
*/
priv->keycount = 0;
ret = select(1, &rfds, NULL, NULL, &tv);
if (ret > 0)
{
continue;
}
/* No more characters waiting in the queue. Must be ESC key. */
return '\x1b';
}
else if (esc_seq || ctrl_seq)
{
#ifdef CONFIG_SYSTEM_TERMCURSES_DEBUG_KEYCODES
if (ch >= 33 && ch <= '~')
{
printf("%c", ch);
}
else
{
printf("<0x%02X>", ch);
}
fflush(stdout);
#endif
/* Check if this is a key modifier code */
if (ismodifier)
{
/* Test if previous char was '1' */
if (buildkey[keybuildcount - 1] == '1')
{
buildkey[--keybuildcount] = 0;
}
/* Clear ismodifier attribute */
ismodifier = false;
if (ch < '2' || ch > '8')
{
continue;
}
/* Get the key modifier code */
*keymodifiers = modtable[ch - '2'];
continue;
}
else if (ch == ';')
{
/* Mark next character as key modifier code */
ismodifier = true;
continue;
}
/* Add character to the buildkey */
buildkey[keybuildcount++] = ch;
buildkey[keybuildcount] = 0;
/* If there are more bytes in the sequence, then
* process them prior to searching the keycode
* array to save time.
*/
if (x + 1 != priv->keycount && priv->keybuf[x + 1] != '\x1b')
{
continue;
}
/* Search either ESC or CTRL keycode table */
pkeycodes = g_esc_keycodes;
start = 1;
#ifdef CONFIG_SYSTEM_TERMCURSES_VT100_OSX_ALT_CODES
if (buildkey[0] != '\x1b')
{
pkeycodes = g_ctrl_keycodes;
start = 0;
}
#endif
/* Test for match with known key definitions */
for (k = 0; pkeycodes[k].def != NULL; k++)
{
if (strcmp(&buildkey[start], pkeycodes[k].def) == 0)
{
/* Special key code found! */
keycode = pkeycodes[k].keycode;
break;
}
}
/* If we found a keymodifier, then check for key code
* substitutions.
*/
if (pkeycodes[k].def != NULL && *keymodifiers != 0)
{
uint16_t searchval = (*keymodifiers << 12) | keycode;
/* Search the modifier table */
for (k = 0; k < g_key_modifier_count; k++)
{
/* Test next entry in table for match */
if (searchval == g_key_modifiers[k][0])
{
/* Update to new keycode */
keycode = g_key_modifiers[k][1];
break;
}
}
}
}
else if (ch == 127)
{
/* Return as CTRL-H */
keycode = 8;
}
else if ((ch >= ' ' && ch <= '~') || (ch >= 1 && ch <= 26))
{
/* Return normal ASCII or CTRL-x key */
keycode = ch;
#ifdef CONFIG_SYSTEM_TERMCURSES_DEBUG_KEYCODES
printf("%c", ch);
fflush(stdout);
#endif
}
else
{
/* It is a special control code */
buildkey[0] = ch;
keybuildcount = 1;
ctrl_seq = 1;
#ifdef CONFIG_SYSTEM_TERMCURSES_DEBUG_KEYCODES
/* Print all bytes in ctrl seq */
printf("<0x%02X>", ch);
fflush(stdout);
#endif
}
}
/* Update keycount and keybuf */
priv->keycount -= x;
if (priv->keycount < 0)
{
/* Hmm, some bug. Better to simply ignore than to crash */
priv->keycount = 0;
}
if (priv->keycount != 0)
{
memmove(priv->keybuf, &priv->keybuf[x], priv->keycount);
}
}
return keycode;
}
/************************************************************************************
* Check if a key is cached for processing.
*
************************************************************************************/
static bool tcurses_vt100_checkkey(FAR struct termcurses_s *dev)
{
FAR struct tcurses_vt100_s *priv;
int ret;
int fd;
fd_set rfds;
struct timeval tv;
priv = (FAR struct tcurses_vt100_s *)dev;
fd = priv->in_fd;
/* Test for queued characters */
if (priv->keycount > 0)
{
return true;
}
/* Watch stdin (fd 0) to see when it has input. */
FD_ZERO(&rfds);
FD_SET(fd, &rfds);
/* Wait up to 1000us for next character after ESC */
tv.tv_sec = 0;
tv.tv_usec = 0;
ret = select(1, &rfds, NULL, NULL, &tv);
if (ret > 0)
{
return true;
}
return false;
}
/************************************************************************************
* Public Functions
************************************************************************************/
/************************************************************************************
* Name: tcurses_vt100_initialize
*
* Description:
* Initialize a specific instance of the VT100 TermCurses handler and bind it to
* a specific file descriptor pair (input/output ... typically stdin / stdout).
*
************************************************************************************/
FAR struct termcurses_s *tcurses_vt100_initialize(int in_fd, int out_fd)
{
FAR struct tcurses_vt100_s *priv;
/* Allocate a new device structure */
priv = (FAR struct tcurses_vt100_s *)zalloc(sizeof(struct tcurses_vt100_s));
if (priv == NULL)
{
return NULL;
}
/* Populate the device context */
priv->dev.ops = &g_vt100_ops;
priv->dev.name = g_vt100_tcurs.name;
priv->dev.next = NULL;
priv->in_fd = in_fd;
priv->out_fd = out_fd;
priv->keycount = 0;
return (FAR struct termcurses_s *)priv;
}
/************************************************************************************
* Name: tcurses_vt100_terminate
*
* Description:
* Terminates a specific instance of the VT100 TermCurses handler.
*
************************************************************************************/
static int tcurses_vt100_terminate(FAR struct termcurses_s *dev)
{
FAR struct tcurses_vt100_s *priv;
int fd;
priv = (FAR struct tcurses_vt100_s *)dev;
fd = priv->out_fd;
/* Set default foreground and background colors.
* (Ignore the return result.)
*/
write(fd, g_setdefcolors, strlen(g_setdefcolors));
return OK;
}
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