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|
#include "module.h"
#include "signals.h"
#include "terminfo-core.h"
#ifndef _POSIX_VDISABLE
# define _POSIX_VDISABLE 0
#endif
#define tput(s) tputs(s, 0, term_putchar)
inline static int term_putchar(int c)
{
return fputc(c, current_term->out);
}
/* Don't bother including curses.h because of these -
they might not even be defined there */
char *tparm();
int tputs();
#ifdef HAVE_TERMINFO
int setupterm();
char *tigetstr();
int tigetnum();
int tigetflag();
#define term_getstr(x, buffer) tigetstr(x.ti_name)
#define term_getnum(x) tigetnum(x.ti_name);
#define term_getflag(x) tigetflag(x.ti_name);
#else
int tgetent();
char *tgetstr();
int tgetnum();
int tgetflag();
#define term_getstr(x, buffer) tgetstr(x.tc_name, &buffer)
#define term_getnum(x) tgetnum(x.tc_name)
#define term_getflag(x) tgetflag(x.tc_name)
#endif
#define CAP_TYPE_FLAG 0
#define CAP_TYPE_INT 1
#define CAP_TYPE_STR 2
typedef struct {
const char *ti_name; /* terminfo name */
const char *tc_name; /* termcap name */
int type;
unsigned int offset;
} TERMINFO_REC;
TERM_REC *current_term;
/* Define only what we might need */
static TERMINFO_REC tcaps[] = {
/* Terminal size */
{ "cols", "co", CAP_TYPE_INT, G_STRUCT_OFFSET(TERM_REC, width) },
{ "lines", "li", CAP_TYPE_INT, G_STRUCT_OFFSET(TERM_REC, height) },
/* Cursor movement */
{ "smcup", "ti", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_smcup) },
{ "rmcup", "te", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_rmcup) },
{ "cup", "cm", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_cup) },
{ "hpa", "ch", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_hpa) },
{ "vpa", "vh", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_vpa) },
{ "cub1", "le", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_cub1) },
{ "cuf1", "nd", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_cuf1) },
{ "civis", "vi", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_civis) },
{ "cnorm", "ve", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_cnorm) },
/* Scrolling */
{ "csr", "cs", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_csr) },
{ "wind", "wi", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_wind) },
{ "ri", "sr", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_ri) },
{ "rin", "SR", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_rin) },
{ "ind", "sf", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_ind) },
{ "indn", "SF", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_indn) },
{ "il", "AL", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_il) },
{ "il1", "al", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_il1) },
{ "dl", "DL", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_dl) },
{ "dl1", "dl", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_dl1) },
/* Clearing screen */
{ "clear", "cl", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_clear) },
{ "ed", "cd", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_ed) },
/* Clearing to end of line */
{ "el", "ce", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_el) },
/* Repeating character */
{ "rep", "rp", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_rep) },
/* Colors */
{ "colors", "Co", CAP_TYPE_INT, G_STRUCT_OFFSET(TERM_REC, TI_colors) },
{ "sgr0", "me", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_sgr0) },
{ "smul", "us", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_smul) },
{ "rmul", "ue", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_rmul) },
{ "smso", "so", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_smso) },
{ "rmso", "se", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_rmso) },
{ "sitm", "ZH", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_sitm) },
{ "ritm", "ZR", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_ritm) },
{ "bold", "md", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_bold) },
{ "blink", "mb", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_blink) },
{ "rev", "mr", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_rev) },
{ "setaf", "AF", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_setaf) },
{ "setab", "AB", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_setab) },
{ "setf", "Sf", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_setf) },
{ "setb", "Sb", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_setb) },
/* Beep */
{ "bel", "bl", CAP_TYPE_STR, G_STRUCT_OFFSET(TERM_REC, TI_bel) },
};
/* Move cursor (cursor_address / cup) */
static void _move_cup(TERM_REC *term, int x, int y)
{
tput(tparm(term->TI_cup, y, x));
}
/* Move cursor (column_address+row_address / hpa+vpa) */
static void _move_pa(TERM_REC *term, int x, int y)
{
tput(tparm(term->TI_hpa, x));
tput(tparm(term->TI_vpa, y));
}
/* Move cursor from a known position */
static void _move_relative(TERM_REC *term, int oldx, int oldy, int x, int y)
{
if (oldx == 0 && x == 0 && y == oldy+1) {
/* move to beginning of next line -
hope this works everywhere */
tput("\r\n");
return;
}
if (oldx > 0 && y == oldy) {
/* move cursor left/right */
if (x == oldx-1 && term->TI_cub1) {
tput(tparm(term->TI_cub1));
return;
}
if (x == oldx+1 && y == oldy && term->TI_cuf1) {
tput(tparm(term->TI_cuf1));
return;
}
}
/* fallback to absolute positioning */
if (term->TI_cup) {
tput(tparm(term->TI_cup, y, x));
return;
}
if (oldy != y)
tput(tparm(term->TI_vpa, y));
if (oldx != x)
tput(tparm(term->TI_hpa, x));
}
/* Set cursor visible/invisible */
static void _set_cursor_visible(TERM_REC *term, int set)
{
tput(tparm(set ? term->TI_cnorm : term->TI_civis));
}
#define scroll_region_setup(term, y1, y2) \
if ((term)->TI_csr != NULL) \
tput(tparm((term)->TI_csr, y1, y2)); \
else if ((term)->TI_wind != NULL) \
tput(tparm((term)->TI_wind, y1, y2, 0, (term)->width-1));
/* Scroll (change_scroll_region+parm_rindex+parm_index / csr+rin+indn) */
static void _scroll_region(TERM_REC *term, int y1, int y2, int count)
{
/* setup the scrolling region to wanted area */
scroll_region_setup(term, y1, y2);
term->move(term, 0, y1);
if (count > 0) {
term->move(term, 0, y2);
tput(tparm(term->TI_indn, count, count));
} else if (count < 0) {
term->move(term, 0, y1);
tput(tparm(term->TI_rin, -count, -count));
}
/* reset the scrolling region to full screen */
scroll_region_setup(term, 0, term->height-1);
}
/* Scroll (change_scroll_region+scroll_reverse+scroll_forward / csr+ri+ind) */
static void _scroll_region_1(TERM_REC *term, int y1, int y2, int count)
{
int i;
/* setup the scrolling region to wanted area */
scroll_region_setup(term, y1, y2);
if (count > 0) {
term->move(term, 0, y2);
for (i = 0; i < count; i++)
tput(tparm(term->TI_ind));
} else if (count < 0) {
term->move(term, 0, y1);
for (i = count; i < 0; i++)
tput(tparm(term->TI_ri));
}
/* reset the scrolling region to full screen */
scroll_region_setup(term, 0, term->height-1);
}
/* Scroll (parm_insert_line+parm_delete_line / il+dl) */
static void _scroll_line(TERM_REC *term, int y1, int y2, int count)
{
/* setup the scrolling region to wanted area -
this might not necessarily work with il/dl, but at least it
looks better if it does */
scroll_region_setup(term, y1, y2);
if (count > 0) {
term->move(term, 0, y1);
tput(tparm(term->TI_dl, count, count));
term->move(term, 0, y2-count+1);
tput(tparm(term->TI_il, count, count));
} else if (count < 0) {
term->move(term, 0, y2+count+1);
tput(tparm(term->TI_dl, -count, -count));
term->move(term, 0, y1);
tput(tparm(term->TI_il, -count, -count));
}
/* reset the scrolling region to full screen */
scroll_region_setup(term, 0, term->height-1);
}
/* Scroll (insert_line+delete_line / il1+dl1) */
static void _scroll_line_1(TERM_REC *term, int y1, int y2, int count)
{
int i;
if (count > 0) {
term->move(term, 0, y1);
for (i = 0; i < count; i++)
tput(tparm(term->TI_dl1));
term->move(term, 0, y2-count+1);
for (i = 0; i < count; i++)
tput(tparm(term->TI_il1));
} else if (count < 0) {
term->move(term, 0, y2+count+1);
for (i = count; i < 0; i++)
tput(tparm(term->TI_dl1));
term->move(term, 0, y1);
for (i = count; i < 0; i++)
tput(tparm(term->TI_il1));
}
}
/* Clear screen (clear_screen / clear) */
static void _clear_screen(TERM_REC *term)
{
tput(tparm(term->TI_clear));
}
/* Clear screen (clr_eos / ed) */
static void _clear_eos(TERM_REC *term)
{
term->move(term, 0, 0);
tput(tparm(term->TI_ed));
}
/* Clear screen (parm_delete_line / dl) */
static void _clear_del(TERM_REC *term)
{
term->move(term, 0, 0);
tput(tparm(term->TI_dl, term->height, term->height));
}
/* Clear screen (delete_line / dl1) */
static void _clear_del_1(TERM_REC *term)
{
int i;
term->move(term, 0, 0);
for (i = 0; i < term->height; i++)
tput(tparm(term->TI_dl1));
}
/* Clear to end of line (clr_eol / el) */
static void _clrtoeol(TERM_REC *term)
{
tput(tparm(term->TI_el));
}
/* Repeat character (rep / rp) */
static void _repeat(TERM_REC *term, char chr, int count)
{
tput(tparm(term->TI_rep, chr, count));
}
/* Repeat character (manual) */
static void _repeat_manual(TERM_REC *term, char chr, int count)
{
while (count > 0) {
putc(chr, term->out);
count--;
}
}
/* Reset all terminal attributes */
static void _set_normal(TERM_REC *term)
{
tput(tparm(term->TI_normal));
}
static void _set_blink(TERM_REC *term)
{
tput(tparm(term->TI_blink));
}
/* Reverse on */
static void _set_reverse(TERM_REC *term)
{
tput(tparm(term->TI_rev));
}
/* Bold on */
static void _set_bold(TERM_REC *term)
{
tput(tparm(term->TI_bold));
}
/* Underline on/off */
static void _set_uline(TERM_REC *term, int set)
{
tput(tparm(set ? term->TI_smul : term->TI_rmul));
}
/* Standout on/off */
static void _set_standout(TERM_REC *term, int set)
{
tput(tparm(set ? term->TI_smso : term->TI_rmso));
}
/* Italic on/off */
static void _set_italic(TERM_REC *term, int set)
{
tput(tparm(set ? term->TI_sitm : term->TI_ritm));
}
/* Standout on (fallback for reverse) */
static void _set_standout_on(TERM_REC *term)
{
_set_standout(term, TRUE);
}
inline static int color256(const TERM_REC *term, const int color) {
if (color < term->TI_colors)
return color;
if (color < 16)
return color % term->TI_colors;
if (color < 256)
return term_color256map[color] % term->TI_colors;
return color % term->TI_colors;
}
/* Change foreground color */
static void _set_fg(TERM_REC *term, int color)
{
tput(tparm(term->TI_fg[color256(term, color)]));
}
/* Change background color */
static void _set_bg(TERM_REC *term, int color)
{
tput(tparm(term->TI_bg[color256(term, color)]));
}
/* Beep */
static void _beep(TERM_REC *term)
{
tput(tparm(term->TI_bel));
}
static void _ignore(TERM_REC *term)
{
}
static void _ignore_parm(TERM_REC *term, int param)
{
}
static void term_fill_capabilities(TERM_REC *term)
{
int i, ival;
char *sval;
void *ptr;
#ifndef HAVE_TERMINFO
char *tptr = term->buffer2;
#endif
for (i = 0; i < sizeof(tcaps)/sizeof(tcaps[0]); i++) {
ptr = G_STRUCT_MEMBER_P(term, tcaps[i].offset);
switch (tcaps[i].type) {
case CAP_TYPE_FLAG:
ival = term_getflag(tcaps[i]);
*(int *)ptr = ival;
break;
case CAP_TYPE_INT:
ival = term_getnum(tcaps[i]);
*(int *)ptr = ival;
break;
case CAP_TYPE_STR:
sval = term_getstr(tcaps[i], tptr);
if (sval == (char *) -1)
*(char **)ptr = NULL;
else
*(char **)ptr = sval;
break;
}
}
}
static void terminfo_colors_deinit(TERM_REC *term)
{
int i;
if (terminfo_is_colors_set(term)) {
for (i = 0; i < term->TI_colors; i++) {
g_free(term->TI_fg[i]);
g_free(term->TI_bg[i]);
}
g_free_and_null(term->TI_fg);
g_free_and_null(term->TI_bg);
}
}
/* Setup colors - if force is set, use ANSI-style colors if
terminal capabilities don't contain color codes */
void terminfo_setup_colors(TERM_REC *term, int force)
{
static const char ansitab[16] = {
0, 4, 2, 6, 1, 5, 3, 7,
8, 12, 10, 14, 9, 13, 11, 15
};
unsigned int i, color;
terminfo_colors_deinit(term);
if (force && term->TI_setf == NULL && term->TI_setaf == NULL)
term->TI_colors = 8;
if ((term->TI_setf || term->TI_setaf || force) &&
term->TI_colors > 0) {
term->TI_fg = g_new0(char *, term->TI_colors);
term->TI_bg = g_new0(char *, term->TI_colors);
term->set_fg = _set_fg;
term->set_bg = _set_bg;
} else {
/* no colors */
term->TI_colors = 0;
term->set_fg = term->set_bg = _ignore_parm;
}
if (term->TI_setaf) {
for (i = 0; i < term->TI_colors; i++) {
color = i < 16 ? ansitab[i] : i;
term->TI_fg[i] = g_strdup(tparm(term->TI_setaf, color, 0));
}
} else if (term->TI_setf) {
for (i = 0; i < term->TI_colors; i++)
term->TI_fg[i] = g_strdup(tparm(term->TI_setf, i, 0));
} else if (force) {
for (i = 0; i < 8; i++)
term->TI_fg[i] = g_strdup_printf("\033[%dm", 30+ansitab[i]);
}
if (term->TI_setab) {
for (i = 0; i < term->TI_colors; i++) {
color = i < 16 ? ansitab[i] : i;
term->TI_bg[i] = g_strdup(tparm(term->TI_setab, color, 0));
}
} else if (term->TI_setb) {
for (i = 0; i < term->TI_colors; i++)
term->TI_bg[i] = g_strdup(tparm(term->TI_setb, i, 0));
} else if (force) {
for (i = 0; i < 8; i++)
term->TI_bg[i] = g_strdup_printf("\033[%dm", 40+ansitab[i]);
}
}
static void terminfo_input_init(TERM_REC *term)
{
tcgetattr(fileno(term->in), &term->old_tio);
memcpy(&term->tio, &term->old_tio, sizeof(term->tio));
term->tio.c_lflag &= ~(ICANON | ECHO); /* CBREAK, no ECHO */
term->tio.c_cc[VMIN] = 1; /* read() is satisfied after 1 char */
term->tio.c_cc[VTIME] = 0; /* No timer */
/* Disable INTR, QUIT, VDSUSP and SUSP keys */
term->tio.c_cc[VINTR] = _POSIX_VDISABLE;
term->tio.c_cc[VQUIT] = _POSIX_VDISABLE;
#ifdef VDSUSP
term->tio.c_cc[VDSUSP] = _POSIX_VDISABLE;
#endif
#ifdef VSUSP
term->tio.c_cc[VSUSP] = _POSIX_VDISABLE;
#endif
tcsetattr(fileno(term->in), TCSADRAIN, &term->tio);
}
static void terminfo_input_deinit(TERM_REC *term)
{
tcsetattr(fileno(term->in), TCSADRAIN, &term->old_tio);
}
void terminfo_cont(TERM_REC *term)
{
if (term->TI_smcup)
tput(tparm(term->TI_smcup));
terminfo_input_init(term);
}
void terminfo_stop(TERM_REC *term)
{
/* reset colors */
terminfo_set_normal();
/* move cursor to bottom of the screen */
terminfo_move(0, term->height-1);
/* stop cup-mode */
if (term->TI_rmcup)
tput(tparm(term->TI_rmcup));
/* reset input settings */
terminfo_input_deinit(term);
fflush(term->out);
}
static int term_setup(TERM_REC *term)
{
GString *str;
#ifdef HAVE_TERMINFO
int err;
#endif
char *term_env;
term_env = getenv("TERM");
if (term_env == NULL) {
fprintf(stderr, "TERM environment not set\n");
return 0;
}
#ifdef HAVE_TERMINFO
if (setupterm(term_env, 1, &err) != 0) {
fprintf(stderr, "setupterm() failed for TERM=%s: %d\n", term_env, err);
return 0;
}
#else
if (tgetent(term->buffer1, term_env) < 1)
{
fprintf(stderr, "Termcap not found for TERM=%s\n", term_env);
return 0;
}
#endif
term_fill_capabilities(term);
/* Cursor movement */
if (term->TI_cup)
term->move = _move_cup;
else if (term->TI_hpa && term->TI_vpa)
term->move = _move_pa;
else {
fprintf(stderr, "Terminal doesn't support cursor movement\n");
return 0;
}
term->move_relative = _move_relative;
term->set_cursor_visible = term->TI_civis && term->TI_cnorm ?
_set_cursor_visible : _ignore_parm;
/* Scrolling */
if ((term->TI_csr || term->TI_wind) && term->TI_rin && term->TI_indn)
term->scroll = _scroll_region;
else if (term->TI_il && term->TI_dl)
term->scroll = _scroll_line;
else if ((term->TI_csr || term->TI_wind) && term->TI_ri && term->TI_ind)
term->scroll = _scroll_region_1;
else if (term->scroll == NULL && (term->TI_il1 && term->TI_dl1))
term->scroll = _scroll_line_1;
else if (term->scroll == NULL) {
fprintf(stderr, "Terminal doesn't support scrolling\n");
return 0;
}
/* Clearing screen */
if (term->TI_clear)
term->clear = _clear_screen;
else if (term->TI_ed)
term->clear = _clear_eos;
else if (term->TI_dl)
term->clear = _clear_del;
else if (term->TI_dl1)
term->clear = _clear_del_1;
else {
/* we could do this by line inserts as well, but don't
bother - if some terminal has insert line it most probably
has delete line as well, if not a regular clear screen */
fprintf(stderr, "Terminal doesn't support clearing screen\n");
return 0;
}
/* Clearing to end of line */
if (term->TI_el)
term->clrtoeol = _clrtoeol;
else {
fprintf(stderr, "Terminal doesn't support clearing to end of line\n");
return 0;
}
/* Repeating character */
if (term->TI_rep)
term->repeat = _repeat;
else
term->repeat = _repeat_manual;
/* Bold, underline, standout, reverse, italics */
term->set_blink = term->TI_blink ? _set_blink : _ignore;
term->set_bold = term->TI_bold ? _set_bold : _ignore;
term->set_reverse = term->TI_rev ? _set_reverse :
term->TI_smso ? _set_standout_on : _ignore;
term->set_uline = term->TI_smul && term->TI_rmul ?
_set_uline : _ignore_parm;
term->set_standout = term->TI_smso && term->TI_rmso ?
_set_standout : _ignore_parm;
term->set_italic = term->TI_sitm && term->TI_ritm ?
_set_italic : _ignore_parm;
/* Create a string to set all attributes off */
str = g_string_new(NULL);
if (term->TI_sgr0)
g_string_append(str, term->TI_sgr0);
if (term->TI_rmul && (term->TI_sgr0 == NULL || strcmp(term->TI_rmul, term->TI_sgr0) != 0))
g_string_append(str, term->TI_rmul);
if (term->TI_rmso && (term->TI_sgr0 == NULL || strcmp(term->TI_rmso, term->TI_sgr0) != 0))
g_string_append(str, term->TI_rmso);
if (term->TI_ritm && (term->TI_sgr0 == NULL || strcmp(term->TI_ritm, term->TI_sgr0) != 0))
g_string_append(str, term->TI_ritm);
term->TI_normal = str->str;
g_string_free(str, FALSE);
term->set_normal = _set_normal;
term->beep = term->TI_bel ? _beep : _ignore;
terminfo_setup_colors(term, FALSE);
terminfo_cont(term);
return 1;
}
TERM_REC *terminfo_core_init(FILE *in, FILE *out)
{
TERM_REC *old_term, *term;
old_term = current_term;
current_term = term = g_new0(TERM_REC, 1);
term->in = in;
term->out = out;
if (!term_setup(term)) {
g_free(term);
term = NULL;
}
current_term = old_term;
return term;
}
void terminfo_core_deinit(TERM_REC *term)
{
TERM_REC *old_term;
old_term = current_term;
current_term = term;
term->set_normal(term);
current_term = old_term;
terminfo_stop(term);
g_free(term->TI_normal);
terminfo_colors_deinit(term);
g_free(term);
}
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