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termo/driver-csi.c

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#include "termkey.h"
#include "termkey-internal.h"
#include <stdio.h>
#include <string.h>
typedef struct {
TermKey *tk;
// There are 64 codes 0x40 - 0x7F
struct keyinfo csi_ss3s[64];
struct keyinfo ss3s[64];
char ss3_kpalts[64];
int ncsifuncs;
struct keyinfo *csifuncs;
} TermKeyCsi;
static TermKeySym register_csi_ss3(TermKeyCsi *csi, TermKeyType type, TermKeySym sym, unsigned char cmd, const char *name);
static TermKeySym register_ss3kpalt(TermKeyCsi *csi, TermKeyType type, TermKeySym sym, unsigned char cmd, const char *name, char kpalt);
static TermKeySym register_csifunc(TermKeyCsi *csi, TermKeyType type, TermKeySym sym, int number, const char *name);
static TermKeySym register_csi_ss3_full(TermKeyCsi *csi, TermKeyType type, TermKeySym sym, int modifier_set, int modifier_mask, unsigned char cmd, const char *name);
static TermKeySym register_ss3kpalt_full(TermKeyCsi *csi, TermKeyType type, TermKeySym sym, int modifier_set, int modifier_mask, unsigned char cmd, const char *name, char kpalt);
static TermKeySym register_csifunc_full(TermKeyCsi *csi, TermKeyType type, TermKeySym sym, int modifier_set, int modifier_mask, int number, const char *name);
static void *new_driver(TermKey *tk, const char *term)
{
if(strncmp(term, "xterm", 5) == 0) {
// We want "xterm" or "xtermc" or "xterm-..."
if(term[5] != 0 && term[5] != '-' && term[5] != 'c')
return NULL;
}
else if(strcmp(term, "screen") == 0) {
/* Also apply for screen, because it might be transporting xterm-like
* sequences. Yes, this sucks. We shouldn't need to rely on this behaviour
* but there's no other way to know, and if we don't then we won't
* recognise its sequences.
*/
}
else
return NULL;
// Excellent - we'll continue
TermKeyCsi *csi = malloc(sizeof *csi);
if(!csi)
return NULL;
csi->tk = tk;
int i;
for(i = 0; i < 64; i++) {
csi->csi_ss3s[i].sym = TERMKEY_SYM_UNKNOWN;
csi->ss3s[i].sym = TERMKEY_SYM_UNKNOWN;
csi->ss3_kpalts[i] = 0;
}
csi->ncsifuncs = 32;
csi->csifuncs = malloc(sizeof(csi->csifuncs[0]) * csi->ncsifuncs);
if(!csi->csifuncs)
goto abort_free_csi;
for(i = 0; i < csi->ncsifuncs; i++)
csi->csifuncs[i].sym = TERMKEY_SYM_UNKNOWN;
register_csi_ss3(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_UP, 'A', NULL);
register_csi_ss3(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_DOWN, 'B', NULL);
register_csi_ss3(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_RIGHT, 'C', NULL);
register_csi_ss3(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_LEFT, 'D', NULL);
register_csi_ss3(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_BEGIN, 'E', NULL);
register_csi_ss3(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_END, 'F', NULL);
register_csi_ss3(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_HOME, 'H', NULL);
register_csi_ss3(csi, TERMKEY_TYPE_FUNCTION, 1, 'P', NULL);
register_csi_ss3(csi, TERMKEY_TYPE_FUNCTION, 2, 'Q', NULL);
register_csi_ss3(csi, TERMKEY_TYPE_FUNCTION, 3, 'R', NULL);
register_csi_ss3(csi, TERMKEY_TYPE_FUNCTION, 4, 'S', NULL);
register_csi_ss3_full(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_TAB, TERMKEY_KEYMOD_SHIFT, TERMKEY_KEYMOD_SHIFT, 'Z', NULL);
register_ss3kpalt(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KPENTER, 'M', NULL, 0);
register_ss3kpalt(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KPEQUALS, 'X', NULL, '=');
register_ss3kpalt(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KPMULT, 'j', NULL, '*');
register_ss3kpalt(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KPPLUS, 'k', NULL, '+');
register_ss3kpalt(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KPCOMMA, 'l', NULL, ',');
register_ss3kpalt(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KPMINUS, 'm', NULL, '-');
register_ss3kpalt(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KPPERIOD, 'n', NULL, '.');
register_ss3kpalt(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KPDIV, 'o', NULL, '/');
register_ss3kpalt(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KP0, 'p', NULL, '0');
register_ss3kpalt(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KP1, 'q', NULL, '1');
register_ss3kpalt(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KP2, 'r', NULL, '2');
register_ss3kpalt(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KP3, 's', NULL, '3');
register_ss3kpalt(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KP4, 't', NULL, '4');
register_ss3kpalt(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KP5, 'u', NULL, '5');
register_ss3kpalt(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KP6, 'v', NULL, '6');
register_ss3kpalt(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KP7, 'w', NULL, '7');
register_ss3kpalt(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KP8, 'x', NULL, '8');
register_ss3kpalt(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KP9, 'y', NULL, '9');
register_csifunc(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_FIND, 1, NULL);
register_csifunc(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_INSERT, 2, NULL);
register_csifunc(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_DELETE, 3, NULL);
register_csifunc(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_SELECT, 4, NULL);
register_csifunc(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_PAGEUP, 5, NULL);
register_csifunc(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_PAGEDOWN, 6, NULL);
register_csifunc(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_HOME, 7, NULL);
register_csifunc(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_END, 8, NULL);
register_csifunc(csi, TERMKEY_TYPE_FUNCTION, 1, 11, NULL);
register_csifunc(csi, TERMKEY_TYPE_FUNCTION, 2, 12, NULL);
register_csifunc(csi, TERMKEY_TYPE_FUNCTION, 3, 13, NULL);
register_csifunc(csi, TERMKEY_TYPE_FUNCTION, 4, 14, NULL);
register_csifunc(csi, TERMKEY_TYPE_FUNCTION, 5, 15, NULL);
register_csifunc(csi, TERMKEY_TYPE_FUNCTION, 6, 17, NULL);
register_csifunc(csi, TERMKEY_TYPE_FUNCTION, 7, 18, NULL);
register_csifunc(csi, TERMKEY_TYPE_FUNCTION, 8, 19, NULL);
register_csifunc(csi, TERMKEY_TYPE_FUNCTION, 9, 20, NULL);
register_csifunc(csi, TERMKEY_TYPE_FUNCTION, 10, 21, NULL);
register_csifunc(csi, TERMKEY_TYPE_FUNCTION, 11, 23, NULL);
register_csifunc(csi, TERMKEY_TYPE_FUNCTION, 12, 24, NULL);
register_csifunc(csi, TERMKEY_TYPE_FUNCTION, 13, 25, NULL);
register_csifunc(csi, TERMKEY_TYPE_FUNCTION, 14, 26, NULL);
register_csifunc(csi, TERMKEY_TYPE_FUNCTION, 15, 28, NULL);
register_csifunc(csi, TERMKEY_TYPE_FUNCTION, 16, 29, NULL);
register_csifunc(csi, TERMKEY_TYPE_FUNCTION, 17, 31, NULL);
register_csifunc(csi, TERMKEY_TYPE_FUNCTION, 18, 32, NULL);
register_csifunc(csi, TERMKEY_TYPE_FUNCTION, 19, 33, NULL);
register_csifunc(csi, TERMKEY_TYPE_FUNCTION, 20, 34, NULL);
return csi;
abort_free_csi:
free(csi);
return NULL;
}
static void free_driver(void *info)
{
TermKeyCsi *csi = info;
free(csi->csifuncs); csi->csifuncs = NULL;
free(csi);
}
#define CHARAT(i) (tk->buffer[tk->buffstart + (i)])
static TermKeyResult peekkey_csi(TermKey *tk, TermKeyCsi *csi, size_t introlen, TermKeyKey *key, int force, size_t *nbytep)
{
size_t csi_end = introlen;
while(csi_end < tk->buffcount) {
if(CHARAT(csi_end) >= 0x40 && CHARAT(csi_end) < 0x80)
break;
csi_end++;
}
if(csi_end >= tk->buffcount) {
if(!force)
return TERMKEY_RES_AGAIN;
(*tk->method.emit_codepoint)(tk, '[', key);
key->modifiers |= TERMKEY_KEYMOD_ALT;
*nbytep = introlen;
return TERMKEY_RES_KEY;
}
unsigned char cmd = CHARAT(csi_end);
long arg[16];
char present = 0;
int args = 0;
size_t p = introlen;
// Now attempt to parse out up number;number;... separated values
while(p < csi_end) {
unsigned char c = CHARAT(p);
if(c >= '0' && c <= '9') {
if(!present) {
arg[args] = c - '0';
present = 1;
}
else {
arg[args] = (arg[args] * 10) + c - '0';
}
}
else if(c == ';') {
if(!present)
arg[args] = -1;
present = 0;
args++;
if(args > 16)
break;
}
p++;
}
if(!present)
arg[args] = -1;
args++;
if(args > 1 && arg[1] != -1)
key->modifiers = arg[1] - 1;
else
key->modifiers = 0;
if(cmd == '~') {
key->type = TERMKEY_TYPE_KEYSYM;
if(arg[0] == 27) {
int mod = key->modifiers;
(*tk->method.emit_codepoint)(tk, arg[2], key);
key->modifiers |= mod;
}
else if(arg[0] >= 0 && arg[0] < csi->ncsifuncs) {
key->type = csi->csifuncs[arg[0]].type;
key->code.sym = csi->csifuncs[arg[0]].sym;
key->modifiers &= ~(csi->csifuncs[arg[0]].modifier_mask);
key->modifiers |= csi->csifuncs[arg[0]].modifier_set;
}
else
key->code.sym = TERMKEY_SYM_UNKNOWN;
if(key->code.sym == TERMKEY_SYM_UNKNOWN) {
#ifdef DEBUG
fprintf(stderr, "CSI: Unknown function key %ld\n", arg[0]);
#endif
return TERMKEY_RES_NONE;
}
}
else if(cmd == 'M') {
size_t csi_len = csi_end + 1;
tk->buffstart += csi_len;
tk->buffcount -= csi_len;
TermKeyResult mouse_result = (*tk->method.peekkey_mouse)(tk, key, nbytep);
tk->buffstart -= csi_len;
tk->buffcount += csi_len;
if(mouse_result == TERMKEY_RES_KEY)
*nbytep += csi_len;
return mouse_result;
}
else {
// We know from the logic above that cmd must be >= 0x40 and < 0x80
key->type = csi->csi_ss3s[cmd - 0x40].type;
key->code.sym = csi->csi_ss3s[cmd - 0x40].sym;
key->modifiers &= ~(csi->csi_ss3s[cmd - 0x40].modifier_mask);
key->modifiers |= csi->csi_ss3s[cmd - 0x40].modifier_set;
if(key->code.sym == TERMKEY_SYM_UNKNOWN) {
#ifdef DEBUG
switch(args) {
case 1:
fprintf(stderr, "CSI: Unknown arg1=%ld cmd=%c\n", arg[0], cmd);
break;
case 2:
fprintf(stderr, "CSI: Unknown arg1=%ld arg2=%ld cmd=%c\n", arg[0], arg[1], cmd);
break;
case 3:
fprintf(stderr, "CSI: Unknown arg1=%ld arg2=%ld arg3=%ld cmd=%c\n", arg[0], arg[1], arg[2], cmd);
break;
default:
fprintf(stderr, "CSI: Unknown arg1=%ld arg2=%ld arg3=%ld ... args=%d cmd=%c\n", arg[0], arg[1], arg[2], args, cmd);
break;
}
#endif
return TERMKEY_RES_NONE;
}
}
*nbytep = csi_end + 1;
return TERMKEY_RES_KEY;
}
static TermKeyResult peekkey_ss3(TermKey *tk, TermKeyCsi *csi, size_t introlen, TermKeyKey *key, int force, size_t *nbytep)
{
if(tk->buffcount < introlen + 1) {
if(!force)
return TERMKEY_RES_AGAIN;
(*tk->method.emit_codepoint)(tk, 'O', key);
key->modifiers |= TERMKEY_KEYMOD_ALT;
*nbytep = tk->buffcount;
return TERMKEY_RES_KEY;
}
unsigned char cmd = CHARAT(introlen);
if(cmd < 0x40 || cmd >= 0x80)
return TERMKEY_RES_NONE;
key->type = csi->csi_ss3s[cmd - 0x40].type;
key->code.sym = csi->csi_ss3s[cmd - 0x40].sym;
key->modifiers = csi->csi_ss3s[cmd - 0x40].modifier_set;
if(key->code.sym == TERMKEY_SYM_UNKNOWN) {
if(tk->flags & TERMKEY_FLAG_CONVERTKP && csi->ss3_kpalts[cmd - 0x40]) {
key->type = TERMKEY_TYPE_UNICODE;
key->code.codepoint = csi->ss3_kpalts[cmd - 0x40];
key->modifiers = 0;
key->utf8[0] = key->code.codepoint;
key->utf8[1] = 0;
}
else {
key->type = csi->ss3s[cmd - 0x40].type;
key->code.sym = csi->ss3s[cmd - 0x40].sym;
key->modifiers = csi->ss3s[cmd - 0x40].modifier_set;
}
}
if(key->code.sym == TERMKEY_SYM_UNKNOWN) {
#ifdef DEBUG
fprintf(stderr, "CSI: Unknown SS3 %c (0x%02x)\n", cmd, cmd);
#endif
return TERMKEY_RES_NONE;
}
*nbytep = introlen + 1;
return TERMKEY_RES_KEY;
}
static TermKeyResult peekkey(TermKey *tk, void *info, TermKeyKey *key, int force, size_t *nbytep)
{
if(tk->buffcount == 0)
return tk->is_closed ? TERMKEY_RES_EOF : TERMKEY_RES_NONE;
TermKeyCsi *csi = info;
// Now we're sure at least 1 byte is valid
unsigned char b0 = CHARAT(0);
if(b0 == 0x1b && tk->buffcount > 1 && CHARAT(1) == '[') {
return peekkey_csi(tk, csi, 2, key, force, nbytep);
}
else if(b0 == 0x1b && tk->buffcount > 1 && CHARAT(1) == 'O') {
return peekkey_ss3(tk, csi, 2, key, force, nbytep);
}
else if(b0 == 0x8f) {
return peekkey_ss3(tk, csi, 1, key, force, nbytep);
}
else if(b0 == 0x9b) {
return peekkey_csi(tk, csi, 1, key, force, nbytep);
}
else
return TERMKEY_RES_NONE;
}
static TermKeySym register_csi_ss3(TermKeyCsi *csi, TermKeyType type, TermKeySym sym, unsigned char cmd, const char *name)
{
return register_csi_ss3_full(csi, type, sym, 0, 0, cmd, name);
}
static TermKeySym register_csi_ss3_full(TermKeyCsi *csi, TermKeyType type, TermKeySym sym, int modifier_set, int modifier_mask, unsigned char cmd, const char *name)
{
if(cmd < 0x40 || cmd >= 0x80) {
fprintf(stderr, "Cannot register CSI/SS3 key at cmd 0x%02x - out of bounds\n", cmd);
return -1;
}
if(name)
sym = termkey_register_keyname(csi->tk, sym, name);
csi->csi_ss3s[cmd - 0x40].type = type;
csi->csi_ss3s[cmd - 0x40].sym = sym;
csi->csi_ss3s[cmd - 0x40].modifier_set = modifier_set;
csi->csi_ss3s[cmd - 0x40].modifier_mask = modifier_mask;
return sym;
}
static TermKeySym register_ss3kpalt(TermKeyCsi *csi, TermKeyType type, TermKeySym sym, unsigned char cmd, const char *name, char kpalt)
{
return register_ss3kpalt_full(csi, type, sym, 0, 0, cmd, name, kpalt);
}
static TermKeySym register_ss3kpalt_full(TermKeyCsi *csi, TermKeyType type, TermKeySym sym, int modifier_set, int modifier_mask, unsigned char cmd, const char *name, char kpalt)
{
if(cmd < 0x40 || cmd >= 0x80) {
fprintf(stderr, "Cannot register SS3 key at cmd 0x%02x - out of bounds\n", cmd);
return -1;
}
if(name)
sym = termkey_register_keyname(csi->tk, sym, name);
csi->ss3s[cmd - 0x40].type = type;
csi->ss3s[cmd - 0x40].sym = sym;
csi->ss3s[cmd - 0x40].modifier_set = modifier_set;
csi->ss3s[cmd - 0x40].modifier_mask = modifier_mask;
csi->ss3_kpalts[cmd - 0x40] = kpalt;
return sym;
}
static TermKeySym register_csifunc(TermKeyCsi *csi, TermKeyType type, TermKeySym sym, int number, const char *name)
{
return register_csifunc_full(csi, type, sym, 0, 0, number, name);
}
static TermKeySym register_csifunc_full(TermKeyCsi *csi, TermKeyType type, TermKeySym sym, int modifier_set, int modifier_mask, int number, const char *name)
{
if(name)
sym = termkey_register_keyname(csi->tk, sym, name);
if(number >= csi->ncsifuncs) {
struct keyinfo *new_csifuncs = realloc(csi->csifuncs, sizeof(new_csifuncs[0]) * (number + 1));
// TODO: Handle realloc() failure
csi->csifuncs = new_csifuncs;
// Fill in the hole
for(int i = csi->ncsifuncs; i < number; i++)
csi->csifuncs[i].sym = TERMKEY_SYM_UNKNOWN;
csi->ncsifuncs = number + 1;
}
csi->csifuncs[number].type = type;
csi->csifuncs[number].sym = sym;
csi->csifuncs[number].modifier_set = modifier_set;
csi->csifuncs[number].modifier_mask = modifier_mask;
return sym;
}
struct TermKeyDriver termkey_driver_csi = {
.name = "CSI",
.new_driver = new_driver,
.free_driver = free_driver,
.peekkey = peekkey,
};
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