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terminal: drop ncurses/terminfo/termcap support

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It was disabled since the last release, and nobody complained loudly.

Further details see commit 4b5c3ea7.
This commit is contained in:
wm4 2014-10-23 19:47:22 +02:00
parent a037f7b464
commit 7593706af0
3 changed files with 3 additions and 405 deletions
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6
old-configure
View File

@ -162,8 +162,6 @@ options_state_machine() {
opt_yes_no _gl "OpenGL video output"
opt_yes_no _libguess "libguess"
opt_yes_no _terminfo "terminfo database for key codes" no
opt_yes_no _termcap "termcap database for key codes" no
opt_yes_no _termios "termios database for key codes"
opt_yes_no _iconv "iconv for encoding conversion"
opt_yes_no _lirc "LIRC (remote control) support"
@ -533,10 +531,6 @@ test $(defretval) = yes && _soundcard_header=soundcard.h
check_statement_libs "sys/videoio.h" auto SYS_VIDEOIO_H sys/videoio.h
check_statement_libs "terminfo" $_terminfo TERMINFO term.h 'setupterm(0, 1, 0)' "-lncurses" "-lncursesw"
check_statement_libs "termcap" $_termcap TERMCAP term.h 'tgetent(0, 0)' " " "-lncurses" "-ltinfo" "-ltermcap"
_termios_ok=no
check_statement_libs "termios.h" $_termios TERMIOS_H termios.h
test $(defretval) = yes && _termios_ok=yes && _termios=no

389
osdep/terminal-unix.c
View File

@ -59,8 +59,6 @@ static volatile struct termios tio_orig;
static volatile int tio_orig_set;
#endif
#if !(HAVE_TERMINFO || HAVE_TERMCAP)
struct key_entry {
const char *seq;
int mpkey;
@ -264,9 +262,9 @@ read_more: /* need more bytes */
return true;
}
static void load_termcap(void)
{
}
static volatile int getch2_active = 0;
static volatile int getch2_enabled = 0;
static bool read_terminal;
static void enable_kx(bool enable)
{
@ -277,384 +275,6 @@ static void enable_kx(bool enable)
}
}
#else /* terminfo/termcap */
typedef struct {
char *cap;
int len;
int code;
char chars[8];
} keycode_st;
typedef struct {
keycode_st *map;
int len;
int cap;
} keycode_map;
static keycode_map getch2_keys;
static char *term_rmkx = NULL;
static char *term_smkx = NULL;
#if HAVE_TERMINFO
#include <curses.h>
#endif
#include <term.h>
static keycode_st *keys_push(char *p, int code) {
if (strlen(p) > 8)
return NULL;
if (getch2_keys.len == getch2_keys.cap) {
getch2_keys.cap *= 2;
if (getch2_keys.cap == 0)
getch2_keys.cap = 32;
getch2_keys.map = realloc(getch2_keys.map, sizeof(keycode_st) * getch2_keys.cap);
}
keycode_st *st = &getch2_keys.map[getch2_keys.len++];
st->cap = NULL;
st->len = strlen(p);
st->code = code;
strncpy(st->chars, p, 8);
return st;
}
static int keys_count_matches(char *buf, int buflen) {
int count = 0;
if (buflen < 0)
buflen = strlen(buf);
for (int i = 0; i < getch2_keys.len; i++) {
keycode_st *st = &getch2_keys.map[i];
int len = MPMIN(buflen, st->len);
if (memcmp(buf, st->chars, len) == 0)
count++;
}
return count;
}
static keycode_st *keys_search(char *buf, int buflen) {
if (buflen < 0)
buflen = strlen(buf);
for (int i = 0; i < getch2_keys.len; i++) {
keycode_st *st = &getch2_keys.map[i];
if (buflen >= st->len && memcmp(buf, st->chars, st->len) == 0)
return st;
}
return NULL;
}
/* pushes only if there is no duplicate.
important as we only consider keys if the matches are unique. */
static keycode_st* keys_push_once(char *p, int code) {
keycode_st *st = keys_search(p, -1);
if (!st)
return keys_push(p, code);
return st;
}
typedef struct {
char *buf;
char *pos;
int cap;
} buf_st;
static buf_st termcap_buf;
static void ensure_cap(buf_st *buf, int cap) {
if (buf->pos - buf->buf < cap) {
ptrdiff_t diff = buf->pos - buf->buf;
buf->cap += cap;
buf->buf = realloc(buf->buf, buf->cap);
buf->pos = buf->buf + diff;
}
}
static char *termcap_get(char *id) {
ensure_cap(&termcap_buf, 1024);
return tgetstr(id, &termcap_buf.pos);
}
typedef struct {
char *id;
int code;
} cap_key_pair;
#if 0
#include <stdio.h>
#include <ctype.h>
static void debug_keycode(keycode_st *st) {
if (!st)
return;
char buf[128]; /* worst case should be 70 bytes */
unsigned char *b = &buf[0];
unsigned char *p = &st->chars[0];
if (st->cap)
b += sprintf(b, "%s: ", st->cap);
for(; *p; p++) {
if (*p == 27)
b += sprintf(b, "\\e");
else if (*p < 27)
b += sprintf(b, "^%c", '@' + *p);
else if (!isgraph(*p))
b += sprintf(b, "\\x%02x", (unsigned int)*p);
else
b += sprintf(b, "%c", *p);
}
fprintf(stderr, "%s\n", buf);
}
#endif
static void termcap_add(cap_key_pair pair) {
char *p = termcap_get(pair.id);
if (p) {
keycode_st *st = keys_push_once(p, pair.code);
if (st)
st->cap = pair.id;
/* debug_keycode(st); */
}
}
static void termcap_add_extra_f_keys(void) {
char capbuf[3];
for (int i = 11; i < 0x20; i++) {
unsigned char c;
if (i < 20) { /* 1-9 */
c = '0' + (i - 10);
} else { /* A-Z */
c = 'A' + (i - 20);
}
sprintf(&capbuf[0], "F%c", c);
char *p = termcap_get(capbuf);
if (p)
keys_push_once(p, MP_KEY_F+i);
else
break; /* unlikely that the database has further keys */
}
}
static void load_termcap(void)
{
char *termtype = NULL;
#if HAVE_TERMINFO
use_env(TRUE);
int ret;
if (setupterm(termtype, 1, &ret) != OK) {
/* try again, with with "ansi" terminal if it was unset before */
if (!termtype)
termtype = getenv("TERM");
if (!termtype || *termtype == '\0')
termtype = "ansi";
if (setupterm(termtype, 1, &ret) != OK) {
if (ret < 0) {
printf("Could not access the 'terminfo' data base.\n");
return;
} else {
printf("Couldn't use terminal `%s' for input.\n", termtype);
return;
}
}
}
#else
static char term_buffer[2048];
if (!termtype) termtype = getenv("TERM");
if (!termtype) termtype = "ansi";
int success = tgetent(term_buffer, termtype);
if (success < 0) {
printf("Could not access the 'termcap' data base.\n");
return;
} else if (success == 0) {
printf("Terminal type `%s' is not defined.\n", termtype);
return;
}
#endif
ensure_cap(&termcap_buf, 2048);
static char term_buf[128];
char *buf_ptr = &term_buf[0];
// References for terminfo/termcap codes:
// http://linux.die.net/man/5/termcap
// http://unixhelp.ed.ac.uk/CGI/man-cgi?terminfo+5
term_smkx = tgetstr("ks", &buf_ptr);
term_rmkx = tgetstr("ke", &buf_ptr);
cap_key_pair keys[] = {
{"kP", MP_KEY_PGUP}, {"kN", MP_KEY_PGDWN}, {"kh", MP_KEY_HOME}, {"kH", MP_KEY_END},
{"kI", MP_KEY_INS}, {"kD", MP_KEY_DEL}, /* on PC keyboards */ {"@7", MP_KEY_END},
{"kl", MP_KEY_LEFT}, {"kd", MP_KEY_DOWN}, {"ku", MP_KEY_UP}, {"kr", MP_KEY_RIGHT},
{"do", MP_KEY_ENTER},
{"kb", MP_KEY_BS},
{"k1", MP_KEY_F+1}, {"k2", MP_KEY_F+2}, {"k3", MP_KEY_F+3},
{"k4", MP_KEY_F+4}, {"k5", MP_KEY_F+5}, {"k6", MP_KEY_F+6},
{"k7", MP_KEY_F+7}, {"k8", MP_KEY_F+8}, {"k9", MP_KEY_F+9},
{"k;", MP_KEY_F+10}, {"k0", MP_KEY_F+0},
/* K2 is the keypad center */
{"K2", MP_KEY_KP5},
/* EOL */
{NULL},
};
for (int i = 0; keys[i].id; i++) {
termcap_add(keys[i]);
}
termcap_add_extra_f_keys();
/* special cases (hardcoded, no need for HAVE_TERMCAP) */
/* it's important to use keys_push_once as we can't have duplicates */
/* many terminals, for emacs compatibility, use 0x7f instead of ^H
when typing backspace, even when the 'kb' cap says otherwise. */
keys_push_once("\177", MP_KEY_BS);
/* mintty always sends these when using the numpad arrows,
even in application mode, for telling them from regular arrows. */
keys_push_once("\033[A", MP_KEY_UP);
keys_push_once("\033[B", MP_KEY_DOWN);
keys_push_once("\033[C", MP_KEY_RIGHT);
keys_push_once("\033[D", MP_KEY_LEFT);
/* mintty uses this instead of the "K2" cap for keypad center */
keys_push_once("\033OE", MP_KEY_KP5);
/* fallback if terminfo and termcap are not available */
keys_push_once("\012", MP_KEY_ENTER);
}
static void enable_kx(bool enable)
{
char *cmd = enable ? term_smkx : term_rmkx;
if (cmd)
tputs(cmd, 1, putchar);
}
#define BUF_LEN 256
static unsigned char getch2_buf[BUF_LEN];
static int getch2_len = 0;
static int getch2_pos = 0;
static enum {
STATE_INITIAL,
STATE_UTF8,
} state = STATE_INITIAL;
static int utf8_len = 0;
static void walk_buf(unsigned int count) {
if (!(count < BUF_LEN && count <= getch2_len))
abort();
memmove(&getch2_buf[0], &getch2_buf[count], getch2_len - count);
getch2_len -= count;
getch2_pos -= count;
if (getch2_pos < 0)
getch2_pos = 0;
}
static bool getch2(struct input_ctx *input_ctx)
{
int retval = read(0, &getch2_buf[getch2_pos], BUF_LEN - getch2_len - getch2_pos);
/* Return false on EOF to stop running select() on the FD, as it'd
* trigger all the time. Note that it's possible to get temporary
* EOF on terminal if the user presses ctrl-d, but that shouldn't
* happen if the terminal state change done in terminal_init()
* works.
*/
if (retval == 0)
return false;
if (retval == -1)
return errno != EBADF && errno != EINVAL;
getch2_len += retval;
while (getch2_pos < getch2_len) {
unsigned char c = getch2_buf[getch2_pos++];
switch (state) {
case STATE_INITIAL: {
int match_count = keys_count_matches(&getch2_buf[0], getch2_len);
if (match_count == 1) {
keycode_st *st = keys_search(&getch2_buf[0], getch2_len);
if (st) {
mp_input_put_key(input_ctx, st->code);
walk_buf(st->len);
} /* else this is still a partial (but unique) match */
continue;
} else if (match_count > 1) {
continue; /* need more bytes to disambiguate */
} else {
/* backtrack, send as UTF-8 */
getch2_pos = 1;
c = getch2_buf[0];
}
utf8_len = bstr_parse_utf8_code_length(c);
if (utf8_len > 1) {
state = STATE_UTF8;
} else if (utf8_len == 1) {
switch (c) {
case 0x1b: /* ESC that's not part of escape sequence */
/* only if ESC was typed twice, otherwise ignore it */
if (getch2_len > 1 && getch2_buf[1] == 0x1b) {
walk_buf(1); /* eat the second ESC */
mp_input_put_key(input_ctx, MP_KEY_ESC);
}
break;
default:
mp_input_put_key(input_ctx, c);
}
walk_buf(1);
} else
walk_buf(getch2_pos);
break;
}
case STATE_UTF8: {
if (getch2_pos < utf8_len) /* need more bytes */
continue;
struct bstr s = {getch2_buf, utf8_len};
int unicode = bstr_decode_utf8(s, NULL);
if (unicode > 0) {
mp_input_put_key(input_ctx, unicode);
}
walk_buf(utf8_len);
state = STATE_INITIAL;
continue;
}
}
}
return true;
}
#endif /* terminfo/termcap */
static volatile int getch2_active = 0;
static volatile int getch2_enabled = 0;
static bool read_terminal;
static void do_activate_getch2(void)
{
if (getch2_active || !read_terminal)
@ -852,9 +472,6 @@ int terminal_init(void)
assert(!getch2_enabled);
getch2_enabled = 1;
if (isatty(STDOUT_FILENO))
load_termcap();
read_terminal = isatty(STDIN_FILENO) && isatty(STDOUT_FILENO);
// handlers to fix terminal settings

13
wscript
View File

@ -174,19 +174,6 @@ iconv support use --disable-iconv.",
'name': 'videoio',
'desc': 'videoio.h',
'func': check_headers('sys/videoio.h')
}, {
'name': '--terminfo',
'desc': 'terminfo',
'default': 'disable',
'func': check_libs(['ncurses', 'ncursesw'],
check_statement('term.h', 'setupterm(0, 1, 0)')),
}, {
'name': '--termcap',
'desc': 'termcap',
'deps_neg': ['terminfo'],
'default': 'disable',
'func': check_libs(['ncurses', 'tinfo', 'termcap'],
check_statement('term.h', 'tgetent(0, 0)')),
}, {
'name': '--termios',
'desc': 'termios',