diff options
Diffstat (limited to 'src/termkey/driver-csi.c')
| -rw-r--r-- | src/termkey/driver-csi.c | 772 |
1 files changed, 772 insertions, 0 deletions
diff --git a/src/termkey/driver-csi.c b/src/termkey/driver-csi.c new file mode 100644 index 0000000000..4cd5bbafe4 --- /dev/null +++ b/src/termkey/driver-csi.c @@ -0,0 +1,772 @@ +#include "termkey.h" +#include "termkey-internal.h" + +#include <stdio.h> +#include <string.h> + +// There are 64 codes 0x40 - 0x7F +static int keyinfo_initialised = 0; +static struct keyinfo ss3s[64]; +static char ss3_kpalts[64]; + +typedef struct { + TermKey *tk; + int saved_string_id; + char *saved_string; +} TermKeyCsi; + +typedef TermKeyResult CsiHandler(TermKey *tk, TermKeyKey *key, int cmd, long *arg, int args); +static CsiHandler *csi_handlers[64]; + +/* + * Handler for CSI/SS3 cmd keys + */ + +static struct keyinfo csi_ss3s[64]; + +static TermKeyResult handle_csi_ss3_full(TermKey *tk, TermKeyKey *key, int cmd, long *arg, int args) +{ + if(args > 1 && arg[1] != -1) + key->modifiers = arg[1] - 1; + else + key->modifiers = 0; + + key->type = csi_ss3s[cmd - 0x40].type; + key->code.sym = csi_ss3s[cmd - 0x40].sym; + key->modifiers &= ~(csi_ss3s[cmd - 0x40].modifier_mask); + key->modifiers |= csi_ss3s[cmd - 0x40].modifier_set; + + if(key->code.sym == TERMKEY_SYM_UNKNOWN) + return TERMKEY_RES_NONE; + + return TERMKEY_RES_KEY; +} + +static void register_csi_ss3_full(TermKeyType type, TermKeySym sym, int modifier_set, int modifier_mask, unsigned char cmd) +{ + if(cmd < 0x40 || cmd >= 0x80) { + return; + } + + 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_handlers[cmd - 0x40] = &handle_csi_ss3_full; +} + +static void register_csi_ss3(TermKeyType type, TermKeySym sym, unsigned char cmd) +{ + register_csi_ss3_full(type, sym, 0, 0, cmd); +} + +/* + * Handler for SS3 keys with kpad alternate representations + */ + +static void register_ss3kpalt(TermKeyType type, TermKeySym sym, unsigned char cmd, char kpalt) +{ + if(cmd < 0x40 || cmd >= 0x80) { + return; + } + + ss3s[cmd - 0x40].type = type; + ss3s[cmd - 0x40].sym = sym; + ss3s[cmd - 0x40].modifier_set = 0; + ss3s[cmd - 0x40].modifier_mask = 0; + ss3_kpalts[cmd - 0x40] = kpalt; +} + +/* + * Handler for CSI number ~ function keys + */ + +static struct keyinfo csifuncs[35]; /* This value must be increased if more CSI function keys are added */ +#define NCSIFUNCS (sizeof(csifuncs)/sizeof(csifuncs[0])) + +static TermKeyResult handle_csifunc(TermKey *tk, TermKeyKey *key, int cmd, long *arg, int args) +{ + if(args > 1 && arg[1] != -1) + key->modifiers = arg[1] - 1; + else + key->modifiers = 0; + + 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] < NCSIFUNCS) { + key->type = csifuncs[arg[0]].type; + key->code.sym = csifuncs[arg[0]].sym; + key->modifiers &= ~(csifuncs[arg[0]].modifier_mask); + key->modifiers |= 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; + } + + return TERMKEY_RES_KEY; +} + +static void register_csifunc(TermKeyType type, TermKeySym sym, int number) +{ + if(number >= NCSIFUNCS) { + return; + } + + csifuncs[number].type = type; + csifuncs[number].sym = sym; + csifuncs[number].modifier_set = 0; + csifuncs[number].modifier_mask = 0; + + csi_handlers['~' - 0x40] = &handle_csifunc; +} + +/* + * Handler for CSI u extended Unicode keys + */ + +static TermKeyResult handle_csi_u(TermKey *tk, TermKeyKey *key, int cmd, long *arg, int args) +{ + switch(cmd) { + case 'u': { + if(args > 1 && arg[1] != -1) + key->modifiers = arg[1] - 1; + else + key->modifiers = 0; + + int mod = key->modifiers; + key->type = TERMKEY_TYPE_KEYSYM; + (*tk->method.emit_codepoint)(tk, arg[0], key); + key->modifiers |= mod; + + return TERMKEY_RES_KEY; + } + default: + return TERMKEY_RES_NONE; + } +} + +/* + * Handler for CSI M / CSI m mouse events in SGR and rxvt encodings + * Note: This does not handle X10 encoding + */ + +static TermKeyResult handle_csi_m(TermKey *tk, TermKeyKey *key, int cmd, long *arg, int args) +{ + int initial = cmd >> 8; + cmd &= 0xff; + + switch(cmd) { + case 'M': + case 'm': + break; + default: + return TERMKEY_RES_NONE; + } + + if(!initial && args >= 3) { // rxvt protocol + key->type = TERMKEY_TYPE_MOUSE; + key->code.mouse[0] = arg[0]; + + key->modifiers = (key->code.mouse[0] & 0x1c) >> 2; + key->code.mouse[0] &= ~0x1c; + + termkey_key_set_linecol(key, arg[1], arg[2]); + + return TERMKEY_RES_KEY; + } + + if(initial == '<' && args >= 3) { // SGR protocol + key->type = TERMKEY_TYPE_MOUSE; + key->code.mouse[0] = arg[0]; + + key->modifiers = (key->code.mouse[0] & 0x1c) >> 2; + key->code.mouse[0] &= ~0x1c; + + termkey_key_set_linecol(key, arg[1], arg[2]); + + if(cmd == 'm') // release + key->code.mouse[3] |= 0x80; + + return TERMKEY_RES_KEY; + } + + return TERMKEY_RES_NONE; +} + +TermKeyResult termkey_interpret_mouse(TermKey *tk, const TermKeyKey *key, TermKeyMouseEvent *event, int *button, int *line, int *col) +{ + if(key->type != TERMKEY_TYPE_MOUSE) + return TERMKEY_RES_NONE; + + if(button) + *button = 0; + + termkey_key_get_linecol(key, line, col); + + if(!event) + return TERMKEY_RES_KEY; + + int btn = 0; + + int code = key->code.mouse[0]; + + int drag = code & 0x20; + + code &= ~0x3c; + + switch(code) { + case 0: + case 1: + case 2: + *event = drag ? TERMKEY_MOUSE_DRAG : TERMKEY_MOUSE_PRESS; + btn = code + 1; + break; + + case 3: + *event = TERMKEY_MOUSE_RELEASE; + // no button hint + break; + + case 64: + case 65: + case 66: + case 67: + *event = drag ? TERMKEY_MOUSE_DRAG : TERMKEY_MOUSE_PRESS; + btn = code + 4 - 64; + break; + + default: + *event = TERMKEY_MOUSE_UNKNOWN; + } + + if(button) + *button = btn; + + if(key->code.mouse[3] & 0x80) + *event = TERMKEY_MOUSE_RELEASE; + + return TERMKEY_RES_KEY; +} + +/* + * Handler for CSI ? R position reports + * A plain CSI R with no arguments is probably actually <F3> + */ + +static TermKeyResult handle_csi_R(TermKey *tk, TermKeyKey *key, int cmd, long *arg, int args) +{ + switch(cmd) { + case 'R'|'?'<<8: + if(args < 2) + return TERMKEY_RES_NONE; + + key->type = TERMKEY_TYPE_POSITION; + termkey_key_set_linecol(key, arg[1], arg[0]); + return TERMKEY_RES_KEY; + + default: + return handle_csi_ss3_full(tk, key, cmd, arg, args); + } +} + +TermKeyResult termkey_interpret_position(TermKey *tk, const TermKeyKey *key, int *line, int *col) +{ + if(key->type != TERMKEY_TYPE_POSITION) + return TERMKEY_RES_NONE; + + termkey_key_get_linecol(key, line, col); + + return TERMKEY_RES_KEY; +} + +/* + * Handler for CSI $y mode status reports + */ + +static TermKeyResult handle_csi_y(TermKey *tk, TermKeyKey *key, int cmd, long *arg, int args) +{ + switch(cmd) { + case 'y'|'$'<<16: + case 'y'|'$'<<16 | '?'<<8: + if(args < 2) + return TERMKEY_RES_NONE; + + key->type = TERMKEY_TYPE_MODEREPORT; + key->code.mouse[0] = (cmd >> 8); + key->code.mouse[1] = arg[0] >> 8; + key->code.mouse[2] = arg[0] & 0xff; + key->code.mouse[3] = arg[1]; + return TERMKEY_RES_KEY; + + default: + return TERMKEY_RES_NONE; + } +} + +TermKeyResult termkey_interpret_modereport(TermKey *tk, const TermKeyKey *key, int *initial, int *mode, int *value) +{ + if(key->type != TERMKEY_TYPE_MODEREPORT) + return TERMKEY_RES_NONE; + + if(initial) + *initial = key->code.mouse[0]; + + if(mode) + *mode = ((uint8_t)key->code.mouse[1] << 8) | (uint8_t)key->code.mouse[2]; + + if(value) + *value = key->code.mouse[3]; + + return TERMKEY_RES_KEY; +} + +#define CHARAT(i) (tk->buffer[tk->buffstart + (i)]) + +static TermKeyResult parse_csi(TermKey *tk, size_t introlen, size_t *csi_len, long args[], size_t *nargs, unsigned long *commandp) +{ + 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) + return TERMKEY_RES_AGAIN; + + unsigned char cmd = CHARAT(csi_end); + *commandp = cmd; + + char present = 0; + int argi = 0; + + size_t p = introlen; + + // See if there is an initial byte + if(CHARAT(p) >= '<' && CHARAT(p) <= '?') { + *commandp |= (CHARAT(p) << 8); + p++; + } + + // 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) { + args[argi] = c - '0'; + present = 1; + } + else { + args[argi] = (args[argi] * 10) + c - '0'; + } + } + else if(c == ';') { + if(!present) + args[argi] = -1; + present = 0; + argi++; + + if(argi > 16) + break; + } + else if(c >= 0x20 && c <= 0x2f) { + *commandp |= c << 16; + break; + } + + p++; + } + + if(present) + argi++; + + *nargs = argi; + *csi_len = csi_end + 1; + + return TERMKEY_RES_KEY; +} + +TermKeyResult termkey_interpret_csi(TermKey *tk, const TermKeyKey *key, long args[], size_t *nargs, unsigned long *cmd) +{ + size_t dummy; + + if(tk->hightide == 0) + return TERMKEY_RES_NONE; + if(key->type != TERMKEY_TYPE_UNKNOWN_CSI) + return TERMKEY_RES_NONE; + + return parse_csi(tk, 0, &dummy, args, nargs, cmd); +} + +static int register_keys(void) +{ + int i; + + for(i = 0; i < 64; i++) { + csi_ss3s[i].sym = TERMKEY_SYM_UNKNOWN; + ss3s[i].sym = TERMKEY_SYM_UNKNOWN; + ss3_kpalts[i] = 0; + } + + for(i = 0; i < NCSIFUNCS; i++) + csifuncs[i].sym = TERMKEY_SYM_UNKNOWN; + + register_csi_ss3(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_UP, 'A'); + register_csi_ss3(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_DOWN, 'B'); + register_csi_ss3(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_RIGHT, 'C'); + register_csi_ss3(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_LEFT, 'D'); + register_csi_ss3(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_BEGIN, 'E'); + register_csi_ss3(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_END, 'F'); + register_csi_ss3(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_HOME, 'H'); + register_csi_ss3(TERMKEY_TYPE_FUNCTION, 1, 'P'); + register_csi_ss3(TERMKEY_TYPE_FUNCTION, 2, 'Q'); + register_csi_ss3(TERMKEY_TYPE_FUNCTION, 3, 'R'); + register_csi_ss3(TERMKEY_TYPE_FUNCTION, 4, 'S'); + + register_csi_ss3_full(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_TAB, TERMKEY_KEYMOD_SHIFT, TERMKEY_KEYMOD_SHIFT, 'Z'); + + register_ss3kpalt(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KPENTER, 'M', 0); + register_ss3kpalt(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KPEQUALS, 'X', '='); + register_ss3kpalt(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KPMULT, 'j', '*'); + register_ss3kpalt(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KPPLUS, 'k', '+'); + register_ss3kpalt(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KPCOMMA, 'l', ','); + register_ss3kpalt(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KPMINUS, 'm', '-'); + register_ss3kpalt(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KPPERIOD, 'n', '.'); + register_ss3kpalt(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KPDIV, 'o', '/'); + register_ss3kpalt(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KP0, 'p', '0'); + register_ss3kpalt(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KP1, 'q', '1'); + register_ss3kpalt(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KP2, 'r', '2'); + register_ss3kpalt(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KP3, 's', '3'); + register_ss3kpalt(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KP4, 't', '4'); + register_ss3kpalt(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KP5, 'u', '5'); + register_ss3kpalt(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KP6, 'v', '6'); + register_ss3kpalt(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KP7, 'w', '7'); + register_ss3kpalt(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KP8, 'x', '8'); + register_ss3kpalt(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_KP9, 'y', '9'); + + register_csifunc(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_FIND, 1); + register_csifunc(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_INSERT, 2); + register_csifunc(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_DELETE, 3); + register_csifunc(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_SELECT, 4); + register_csifunc(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_PAGEUP, 5); + register_csifunc(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_PAGEDOWN, 6); + register_csifunc(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_HOME, 7); + register_csifunc(TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_END, 8); + + register_csifunc(TERMKEY_TYPE_FUNCTION, 1, 11); + register_csifunc(TERMKEY_TYPE_FUNCTION, 2, 12); + register_csifunc(TERMKEY_TYPE_FUNCTION, 3, 13); + register_csifunc(TERMKEY_TYPE_FUNCTION, 4, 14); + register_csifunc(TERMKEY_TYPE_FUNCTION, 5, 15); + register_csifunc(TERMKEY_TYPE_FUNCTION, 6, 17); + register_csifunc(TERMKEY_TYPE_FUNCTION, 7, 18); + register_csifunc(TERMKEY_TYPE_FUNCTION, 8, 19); + register_csifunc(TERMKEY_TYPE_FUNCTION, 9, 20); + register_csifunc(TERMKEY_TYPE_FUNCTION, 10, 21); + register_csifunc(TERMKEY_TYPE_FUNCTION, 11, 23); + register_csifunc(TERMKEY_TYPE_FUNCTION, 12, 24); + register_csifunc(TERMKEY_TYPE_FUNCTION, 13, 25); + register_csifunc(TERMKEY_TYPE_FUNCTION, 14, 26); + register_csifunc(TERMKEY_TYPE_FUNCTION, 15, 28); + register_csifunc(TERMKEY_TYPE_FUNCTION, 16, 29); + register_csifunc(TERMKEY_TYPE_FUNCTION, 17, 31); + register_csifunc(TERMKEY_TYPE_FUNCTION, 18, 32); + register_csifunc(TERMKEY_TYPE_FUNCTION, 19, 33); + register_csifunc(TERMKEY_TYPE_FUNCTION, 20, 34); + + csi_handlers['u' - 0x40] = &handle_csi_u; + + csi_handlers['M' - 0x40] = &handle_csi_m; + csi_handlers['m' - 0x40] = &handle_csi_m; + + csi_handlers['R' - 0x40] = &handle_csi_R; + + csi_handlers['y' - 0x40] = &handle_csi_y; + + keyinfo_initialised = 1; + return 1; +} + +static void *new_driver(TermKey *tk, const char *term) +{ + if(!keyinfo_initialised) + if(!register_keys()) + return NULL; + + TermKeyCsi *csi = malloc(sizeof *csi); + if(!csi) + return NULL; + + csi->tk = tk; + csi->saved_string_id = 0; + csi->saved_string = NULL; + + return csi; +} + +static void free_driver(void *info) +{ + TermKeyCsi *csi = info; + + if(csi->saved_string) + free(csi->saved_string); + + free(csi); +} + +static TermKeyResult peekkey_csi(TermKey *tk, TermKeyCsi *csi, size_t introlen, TermKeyKey *key, int force, size_t *nbytep) +{ + size_t csi_len; + size_t args = 16; + long arg[16]; + unsigned long cmd; + + TermKeyResult ret = parse_csi(tk, introlen, &csi_len, arg, &args, &cmd); + + if(ret == TERMKEY_RES_AGAIN) { + if(!force) + return TERMKEY_RES_AGAIN; + + (*tk->method.emit_codepoint)(tk, '[', key); + key->modifiers |= TERMKEY_KEYMOD_ALT; + *nbytep = introlen; + return TERMKEY_RES_KEY; + } + + if(cmd == 'M' && args < 3) { // Mouse in X10 encoding consumes the next 3 bytes also + 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; + } + + TermKeyResult result = TERMKEY_RES_NONE; + + // We know from the logic above that cmd must be >= 0x40 and < 0x80 + if(csi_handlers[(cmd & 0xff) - 0x40]) + result = (*csi_handlers[(cmd & 0xff) - 0x40])(tk, key, cmd, arg, args); + + if(result == TERMKEY_RES_NONE) { +#ifdef DEBUG + switch(args) { + case 0: + fprintf(stderr, "CSI: Unknown cmd=%c\n", (char)cmd); + break; + case 1: + fprintf(stderr, "CSI: Unknown arg1=%ld cmd=%c\n", arg[0], (char)cmd); + break; + case 2: + fprintf(stderr, "CSI: Unknown arg1=%ld arg2=%ld cmd=%c\n", arg[0], arg[1], (char)cmd); + break; + case 3: + fprintf(stderr, "CSI: Unknown arg1=%ld arg2=%ld arg3=%ld cmd=%c\n", arg[0], arg[1], arg[2], (char)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, (char)cmd); + break; + } +#endif + key->type = TERMKEY_TYPE_UNKNOWN_CSI; + key->code.number = cmd; + key->modifiers = 0; + + tk->hightide = csi_len - introlen; + *nbytep = introlen; // Do not yet eat the data bytes + return TERMKEY_RES_KEY; + } + + *nbytep = csi_len; + return result; +} + +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_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) { + if(tk->flags & TERMKEY_FLAG_CONVERTKP && ss3_kpalts[cmd - 0x40]) { + key->type = TERMKEY_TYPE_UNICODE; + key->code.codepoint = ss3_kpalts[cmd - 0x40]; + key->modifiers = 0; + + key->utf8[0] = key->code.codepoint; + key->utf8[1] = 0; + } + else { + key->type = ss3s[cmd - 0x40].type; + key->code.sym = ss3s[cmd - 0x40].sym; + key->modifiers = ss3s[cmd - 0x40].modifier_set; + } + } + + if(key->code.sym == TERMKEY_SYM_UNKNOWN) { +#ifdef DEBUG + fprintf(stderr, "CSI: Unknown SS3 %c (0x%02x)\n", (char)cmd, cmd); +#endif + return TERMKEY_RES_NONE; + } + + *nbytep = introlen + 1; + + return TERMKEY_RES_KEY; +} + +static TermKeyResult peekkey_ctrlstring(TermKey *tk, TermKeyCsi *csi, size_t introlen, TermKeyKey *key, int force, size_t *nbytep) +{ + size_t str_end = introlen; + + while(str_end < tk->buffcount) { + if(CHARAT(str_end) == 0x07) // BEL + break; + if(CHARAT(str_end) == 0x9c) // ST + break; + if(CHARAT(str_end) == 0x1b && + (str_end + 1) < tk->buffcount && + CHARAT(str_end+1) == 0x5c) // ESC-prefixed ST + break; + + str_end++; + } + + if(str_end >= tk->buffcount) + return TERMKEY_RES_AGAIN; + +#ifdef DEBUG + fprintf(stderr, "Found a control string: %*s", + str_end - introlen, tk->buffer + tk->buffstart + introlen); +#endif + + *nbytep = str_end + 1; + if(CHARAT(str_end) == 0x1b) + (*nbytep)++; + + if(csi->saved_string) + free(csi->saved_string); + + size_t len = str_end - introlen; + + csi->saved_string_id++; + csi->saved_string = malloc(len + 1); + + strncpy(csi->saved_string, (char *)tk->buffer + tk->buffstart + introlen, len); + csi->saved_string[len] = 0; + + key->type = (CHARAT(introlen-1) & 0x1f) == 0x10 ? + TERMKEY_TYPE_DCS : TERMKEY_TYPE_OSC; + key->code.number = csi->saved_string_id; + key->modifiers = 0; + + 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; + + switch(CHARAT(0)) { + case 0x1b: + if(tk->buffcount < 2) + return TERMKEY_RES_NONE; + + switch(CHARAT(1)) { + case 0x4f: // ESC-prefixed SS3 + return peekkey_ss3(tk, csi, 2, key, force, nbytep); + + case 0x50: // ESC-prefixed DCS + case 0x5d: // ESC-prefixed OSC + return peekkey_ctrlstring(tk, csi, 2, key, force, nbytep); + + case 0x5b: // ESC-prefixed CSI + return peekkey_csi(tk, csi, 2, key, force, nbytep); + } + + return TERMKEY_RES_NONE; + + case 0x8f: // SS3 + return peekkey_ss3(tk, csi, 1, key, force, nbytep); + + case 0x90: // DCS + case 0x9d: // OSC + return peekkey_ctrlstring(tk, csi, 1, key, force, nbytep); + + case 0x9b: // CSI + return peekkey_csi(tk, csi, 1, key, force, nbytep); + } + + return TERMKEY_RES_NONE; +} + +struct TermKeyDriver termkey_driver_csi = { + .name = "CSI", + + .new_driver = new_driver, + .free_driver = free_driver, + + .peekkey = peekkey, +}; + +TermKeyResult termkey_interpret_string(TermKey *tk, const TermKeyKey *key, const char **strp) +{ + struct TermKeyDriverNode *p; + for(p = tk->drivers; p; p = p->next) + if(p->driver == &termkey_driver_csi) + break; + + if(!p) + return TERMKEY_RES_NONE; + + if(key->type != TERMKEY_TYPE_DCS && + key->type != TERMKEY_TYPE_OSC) + return TERMKEY_RES_NONE; + + TermKeyCsi *csi = p->info; + + if(csi->saved_string_id != key->code.number) + return TERMKEY_RES_NONE; + + *strp = csi->saved_string; + + return TERMKEY_RES_KEY; +} |