Moved all of the C0 registration and 'do_codepoint' logic out of driver-csi back into termkey via another protected method 'emit_codepoint'
This commit is contained in:
Paul LeoNerd Evans
parent
8407c53726
commit
d46f72fc1a
156
driver-csi.c
156
driver-csi.c
@ -4,19 +4,9 @@
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#include <stdio.h>
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#include <string.h>
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struct keyinfo {
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termkey_type type;
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termkey_keysym sym;
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int modifier_mask;
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int modifier_set;
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};
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typedef struct {
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termkey_t *tk;
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// There are 32 C0 codes
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struct keyinfo c0[32];
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// There are 64 codes 0x40 - 0x7F
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struct keyinfo csi_ss3s[64];
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struct keyinfo ss3s[64];
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@ -26,12 +16,10 @@ typedef struct {
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struct keyinfo *csifuncs;
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} termkey_csi;
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static termkey_keysym register_c0(termkey_csi *csi, termkey_keysym sym, unsigned char ctrl, const char *name);
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static termkey_keysym register_csi_ss3(termkey_csi *csi, termkey_type type, termkey_keysym sym, unsigned char cmd, const char *name);
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static termkey_keysym register_ss3kpalt(termkey_csi *csi, termkey_type type, termkey_keysym sym, unsigned char cmd, const char *name, char kpalt);
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static termkey_keysym register_csifunc(termkey_csi *csi, termkey_type type, termkey_keysym sym, int number, const char *name);
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static termkey_keysym register_c0_full(termkey_csi *csi, termkey_keysym sym, int modifier_set, int modifier_mask, unsigned char ctrl, const char *name);
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static termkey_keysym register_csi_ss3_full(termkey_csi *csi, termkey_type type, termkey_keysym sym, int modifier_set, int modifier_mask, unsigned char cmd, const char *name);
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static termkey_keysym register_ss3kpalt_full(termkey_csi *csi, termkey_type type, termkey_keysym sym, int modifier_set, int modifier_mask, unsigned char cmd, const char *name, char kpalt);
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static termkey_keysym register_csifunc_full(termkey_csi *csi, termkey_type type, termkey_keysym sym, int modifier_set, int modifier_mask, int number, const char *name);
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@ -44,10 +32,6 @@ static void *new_driver(termkey_t *tk)
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int i;
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for(i = 0; i < 32; i++) {
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csi->c0[i].sym = TERMKEY_SYM_UNKNOWN;
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}
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for(i = 0; i < 64; i++) {
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csi->csi_ss3s[i].sym = TERMKEY_SYM_UNKNOWN;
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csi->ss3s[i].sym = TERMKEY_SYM_UNKNOWN;
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@ -61,11 +45,6 @@ static void *new_driver(termkey_t *tk)
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for(i = 0; i < csi->ncsifuncs; i++)
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csi->csifuncs[i].sym = TERMKEY_SYM_UNKNOWN;
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register_c0(csi, TERMKEY_SYM_BACKSPACE, 0x08, "Backspace");
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register_c0(csi, TERMKEY_SYM_TAB, 0x09, "Tab");
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register_c0(csi, TERMKEY_SYM_ENTER, 0x0d, "Enter");
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register_c0(csi, TERMKEY_SYM_ESCAPE, 0x1b, "Escape");
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register_csi_ss3(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_UP, 'A', "Up");
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register_csi_ss3(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_DOWN, 'B', "Down");
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register_csi_ss3(csi, TERMKEY_TYPE_KEYSYM, TERMKEY_SYM_RIGHT, 'C', "Right");
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@ -143,99 +122,6 @@ static void free_driver(void *private)
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#define UTF8_INVALID 0xFFFD
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static int utf8_seqlen(int codepoint)
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{
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if(codepoint < 0x0000080) return 1;
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if(codepoint < 0x0000800) return 2;
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if(codepoint < 0x0010000) return 3;
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if(codepoint < 0x0200000) return 4;
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if(codepoint < 0x4000000) return 5;
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return 6;
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}
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static void fill_utf8(termkey_key *key)
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{
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int codepoint = key->code.codepoint;
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int nbytes = utf8_seqlen(codepoint);
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key->utf8[nbytes] = 0;
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// This is easier done backwards
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int b = nbytes;
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while(b > 1) {
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b--;
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key->utf8[b] = 0x80 | (codepoint & 0x3f);
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codepoint >>= 6;
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}
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switch(nbytes) {
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case 1: key->utf8[0] = (codepoint & 0x7f); break;
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case 2: key->utf8[0] = 0xc0 | (codepoint & 0x1f); break;
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case 3: key->utf8[0] = 0xe0 | (codepoint & 0x0f); break;
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case 4: key->utf8[0] = 0xf0 | (codepoint & 0x07); break;
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case 5: key->utf8[0] = 0xf8 | (codepoint & 0x03); break;
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case 6: key->utf8[0] = 0xfc | (codepoint & 0x01); break;
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}
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}
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static inline void do_codepoint(termkey_t *tk, int codepoint, termkey_key *key)
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{
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termkey_csi *csi = tk->driver_info;
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if(codepoint < 0x20) {
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// C0 range
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key->code.codepoint = 0;
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key->modifiers = 0;
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if(!(tk->flags & TERMKEY_FLAG_NOINTERPRET) && csi->c0[codepoint].sym != TERMKEY_SYM_UNKNOWN) {
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key->code.sym = csi->c0[codepoint].sym;
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key->modifiers |= csi->c0[codepoint].modifier_set;
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}
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if(!key->code.sym) {
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key->type = TERMKEY_TYPE_UNICODE;
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key->code.codepoint = codepoint + 0x40;
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key->modifiers = TERMKEY_KEYMOD_CTRL;
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}
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else {
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key->type = TERMKEY_TYPE_KEYSYM;
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}
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}
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else if(codepoint == 0x20 && !(tk->flags & TERMKEY_FLAG_NOINTERPRET)) {
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// ASCII space
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key->type = TERMKEY_TYPE_KEYSYM;
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key->code.sym = TERMKEY_SYM_SPACE;
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key->modifiers = 0;
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}
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else if(codepoint == 0x7f && !(tk->flags & TERMKEY_FLAG_NOINTERPRET)) {
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// ASCII DEL
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key->type = TERMKEY_TYPE_KEYSYM;
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key->code.sym = TERMKEY_SYM_DEL;
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key->modifiers = 0;
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}
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else if(codepoint >= 0x20 && codepoint < 0x80) {
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// ASCII lowbyte range
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key->type = TERMKEY_TYPE_UNICODE;
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key->code.codepoint = codepoint;
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key->modifiers = 0;
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}
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else if(codepoint >= 0x80 && codepoint < 0xa0) {
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// UTF-8 never starts with a C1 byte. So we can be sure of these
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key->type = TERMKEY_TYPE_UNICODE;
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key->code.codepoint = codepoint - 0x40;
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key->modifiers = TERMKEY_KEYMOD_CTRL|TERMKEY_KEYMOD_ALT;
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}
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else {
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// UTF-8 codepoint
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key->type = TERMKEY_TYPE_UNICODE;
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key->code.codepoint = codepoint;
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key->modifiers = 0;
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}
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if(key->type == TERMKEY_TYPE_UNICODE)
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fill_utf8(key);
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}
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#define CHARAT(i) (tk->buffer[tk->buffstart + (i)])
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static termkey_result getkey_csi(termkey_t *tk, size_t introlen, termkey_key *key)
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@ -254,7 +140,7 @@ static termkey_result getkey_csi(termkey_t *tk, size_t introlen, termkey_key *ke
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if(tk->waittime)
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return TERMKEY_RES_AGAIN;
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do_codepoint(tk, '[', key);
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(*tk->method.emit_codepoint)(tk, '[', key);
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key->modifiers |= TERMKEY_KEYMOD_ALT;
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(*tk->method.eat_bytes)(tk, introlen);
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return TERMKEY_RES_KEY;
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@ -310,7 +196,7 @@ static termkey_result getkey_csi(termkey_t *tk, size_t introlen, termkey_key *ke
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if(arg[0] == 27) {
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int mod = key->modifiers;
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do_codepoint(tk, arg[2], key);
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(*tk->method.emit_codepoint)(tk, arg[2], key);
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key->modifiers |= mod;
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}
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else if(arg[0] >= 0 && arg[0] < csi->ncsifuncs) {
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@ -347,7 +233,7 @@ static termkey_result getkey_ss3(termkey_t *tk, size_t introlen, termkey_key *ke
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if(tk->waittime)
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return TERMKEY_RES_AGAIN;
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do_codepoint(tk, 'O', key);
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(*tk->method.emit_codepoint)(tk, 'O', key);
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key->modifiers |= TERMKEY_KEYMOD_ALT;
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(*tk->method.eat_bytes)(tk, tk->buffcount);
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return TERMKEY_RES_KEY;
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@ -402,7 +288,7 @@ static termkey_result getkey(termkey_t *tk, termkey_key *key)
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if(tk->waittime)
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return TERMKEY_RES_AGAIN;
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do_codepoint(tk, b0, key);
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(*tk->method.emit_codepoint)(tk, b0, key);
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(*tk->method.eat_bytes)(tk, 1);
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return TERMKEY_RES_KEY;
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}
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@ -416,7 +302,7 @@ static termkey_result getkey(termkey_t *tk, termkey_key *key)
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return getkey_ss3(tk, 2, key);
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if(b1 == 0x1b) {
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do_codepoint(tk, b0, key);
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(*tk->method.emit_codepoint)(tk, b0, key);
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(*tk->method.eat_bytes)(tk, 1);
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return TERMKEY_RES_KEY;
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}
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@ -448,7 +334,7 @@ static termkey_result getkey(termkey_t *tk, termkey_key *key)
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}
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else if(b0 < 0xa0) {
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// Single byte C0, G0 or C1 - C1 is never UTF-8 initial byte
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do_codepoint(tk, b0, key);
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(*tk->method.emit_codepoint)(tk, b0, key);
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(*tk->method.eat_bytes)(tk, 1);
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return TERMKEY_RES_KEY;
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}
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@ -462,7 +348,7 @@ static termkey_result getkey(termkey_t *tk, termkey_key *key)
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if(b0 < 0xc0) {
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// Starts with a continuation byte - that's not right
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do_codepoint(tk, UTF8_INVALID, key);
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(*tk->method.emit_codepoint)(tk, UTF8_INVALID, key);
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(*tk->method.eat_bytes)(tk, 1);
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return TERMKEY_RES_KEY;
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}
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@ -487,7 +373,7 @@ static termkey_result getkey(termkey_t *tk, termkey_key *key)
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codepoint = b0 & 0x01;
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}
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else {
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do_codepoint(tk, UTF8_INVALID, key);
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(*tk->method.emit_codepoint)(tk, UTF8_INVALID, key);
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(*tk->method.eat_bytes)(tk, 1);
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return TERMKEY_RES_KEY;
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}
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@ -498,7 +384,7 @@ static termkey_result getkey(termkey_t *tk, termkey_key *key)
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for(int b = 1; b < nbytes; b++) {
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unsigned char cb = CHARAT(b);
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if(cb < 0x80 || cb >= 0xc0) {
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do_codepoint(tk, UTF8_INVALID, key);
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(*tk->method.emit_codepoint)(tk, UTF8_INVALID, key);
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(*tk->method.eat_bytes)(tk, b - 1);
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return TERMKEY_RES_KEY;
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}
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@ -517,7 +403,7 @@ static termkey_result getkey(termkey_t *tk, termkey_key *key)
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codepoint == 0xFFFF)
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codepoint = UTF8_INVALID;
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do_codepoint(tk, codepoint, key);
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(*tk->method.emit_codepoint)(tk, codepoint, key);
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(*tk->method.eat_bytes)(tk, nbytes);
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return TERMKEY_RES_KEY;
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}
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@ -538,28 +424,6 @@ static termkey_result getkey(termkey_t *tk, termkey_key *key)
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return TERMKEY_SYM_NONE;
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}
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static termkey_keysym register_c0(termkey_csi *csi, termkey_keysym sym, unsigned char ctrl, const char *name)
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{
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return register_c0_full(csi, sym, 0, 0, ctrl, name);
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}
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static termkey_keysym register_c0_full(termkey_csi *csi, termkey_keysym sym, int modifier_set, int modifier_mask, unsigned char ctrl, const char *name)
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{
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if(ctrl >= 0x20) {
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fprintf(stderr, "Cannot register C0 key at ctrl 0x%02x - out of bounds\n", ctrl);
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return -1;
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}
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if(name)
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sym = termkey_register_keyname(csi->tk, sym, name);
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csi->c0[ctrl].sym = sym;
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csi->c0[ctrl].modifier_set = modifier_set;
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csi->c0[ctrl].modifier_mask = modifier_mask;
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return sym;
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}
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static termkey_keysym register_csi_ss3(termkey_csi *csi, termkey_type type, termkey_keysym sym, unsigned char cmd, const char *name)
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{
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return register_csi_ss3_full(csi, type, sym, 0, 0, cmd, name);
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@ -13,6 +13,13 @@ struct termkey_driver
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termkey_result (*getkey)(termkey_t *tk, termkey_key *key);
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};
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struct keyinfo {
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termkey_type type;
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termkey_keysym sym;
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int modifier_mask;
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int modifier_set;
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};
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struct termkey {
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int fd;
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int flags;
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@ -31,6 +38,9 @@ struct termkey {
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int nkeynames;
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const char **keynames;
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// There are 32 C0 codes
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struct keyinfo c0[32];
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struct termkey_driver driver;
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void *driver_info;
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@ -38,9 +48,21 @@ struct termkey {
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// want exported as real symbols in the library
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struct {
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void (*eat_bytes)(termkey_t *tk, size_t count);
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void (*emit_codepoint)(termkey_t *tk, int codepoint, termkey_key *key);
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} method;
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};
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extern struct termkey_driver termkey_driver_csi;
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// Keep this here for now since it's tiny
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static inline int utf8_seqlen(int codepoint)
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{
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if(codepoint < 0x0000080) return 1;
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if(codepoint < 0x0000800) return 2;
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if(codepoint < 0x0010000) return 3;
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if(codepoint < 0x0200000) return 4;
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if(codepoint < 0x4000000) return 5;
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return 6;
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}
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#endif
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116
termkey.c
116
termkey.c
@ -15,6 +15,10 @@ static struct termkey_driver *drivers[] = {
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// Forwards for the "protected" methods
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static void eat_bytes(termkey_t *tk, size_t count);
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static void emit_codepoint(termkey_t *tk, int codepoint, termkey_key *key);
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static termkey_keysym register_c0(termkey_t *tk, termkey_keysym sym, unsigned char ctrl, const char *name);
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static termkey_keysym register_c0_full(termkey_t *tk, termkey_keysym sym, int modifier_set, int modifier_mask, unsigned char ctrl, const char *name);
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termkey_t *termkey_new_full(int fd, int flags, size_t buffsize, int waittime)
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{
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@ -67,7 +71,16 @@ termkey_t *termkey_new_full(int fd, int flags, size_t buffsize, int waittime)
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for(i = 0; i < tk->nkeynames; i++)
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tk->keynames[i] = NULL;
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for(i = 0; i < 32; i++)
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tk->c0[i].sym = TERMKEY_SYM_NONE;
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tk->method.eat_bytes = &eat_bytes;
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tk->method.emit_codepoint = &emit_codepoint;
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register_c0(tk, TERMKEY_SYM_BACKSPACE, 0x08, "Backspace");
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register_c0(tk, TERMKEY_SYM_TAB, 0x09, "Tab");
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register_c0(tk, TERMKEY_SYM_ENTER, 0x0d, "Enter");
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register_c0(tk, TERMKEY_SYM_ESCAPE, 0x1b, "Escape");
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for(i = 0; drivers[i]; i++) {
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void *driver_info = (*drivers[i]->new_driver)(tk);
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@ -157,6 +170,87 @@ static void eat_bytes(termkey_t *tk, size_t count)
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}
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}
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static void fill_utf8(termkey_key *key)
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{
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int codepoint = key->code.codepoint;
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int nbytes = utf8_seqlen(codepoint);
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key->utf8[nbytes] = 0;
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// This is easier done backwards
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int b = nbytes;
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while(b > 1) {
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b--;
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key->utf8[b] = 0x80 | (codepoint & 0x3f);
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codepoint >>= 6;
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}
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switch(nbytes) {
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case 1: key->utf8[0] = (codepoint & 0x7f); break;
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case 2: key->utf8[0] = 0xc0 | (codepoint & 0x1f); break;
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case 3: key->utf8[0] = 0xe0 | (codepoint & 0x0f); break;
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case 4: key->utf8[0] = 0xf0 | (codepoint & 0x07); break;
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case 5: key->utf8[0] = 0xf8 | (codepoint & 0x03); break;
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case 6: key->utf8[0] = 0xfc | (codepoint & 0x01); break;
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}
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}
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static void emit_codepoint(termkey_t *tk, int codepoint, termkey_key *key)
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{
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if(codepoint < 0x20) {
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// C0 range
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key->code.codepoint = 0;
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key->modifiers = 0;
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if(!(tk->flags & TERMKEY_FLAG_NOINTERPRET) && tk->c0[codepoint].sym != TERMKEY_SYM_UNKNOWN) {
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key->code.sym = tk->c0[codepoint].sym;
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key->modifiers |= tk->c0[codepoint].modifier_set;
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}
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|
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if(!key->code.sym) {
|
||||
key->type = TERMKEY_TYPE_UNICODE;
|
||||
key->code.codepoint = codepoint + 0x40;
|
||||
key->modifiers = TERMKEY_KEYMOD_CTRL;
|
||||
}
|
||||
else {
|
||||
key->type = TERMKEY_TYPE_KEYSYM;
|
||||
}
|
||||
}
|
||||
else if(codepoint == 0x20 && !(tk->flags & TERMKEY_FLAG_NOINTERPRET)) {
|
||||
// ASCII space
|
||||
key->type = TERMKEY_TYPE_KEYSYM;
|
||||
key->code.sym = TERMKEY_SYM_SPACE;
|
||||
key->modifiers = 0;
|
||||
}
|
||||
else if(codepoint == 0x7f && !(tk->flags & TERMKEY_FLAG_NOINTERPRET)) {
|
||||
// ASCII DEL
|
||||
key->type = TERMKEY_TYPE_KEYSYM;
|
||||
key->code.sym = TERMKEY_SYM_DEL;
|
||||
key->modifiers = 0;
|
||||
}
|
||||
else if(codepoint >= 0x20 && codepoint < 0x80) {
|
||||
// ASCII lowbyte range
|
||||
key->type = TERMKEY_TYPE_UNICODE;
|
||||
key->code.codepoint = codepoint;
|
||||
key->modifiers = 0;
|
||||
}
|
||||
else if(codepoint >= 0x80 && codepoint < 0xa0) {
|
||||
// UTF-8 never starts with a C1 byte. So we can be sure of these
|
||||
key->type = TERMKEY_TYPE_UNICODE;
|
||||
key->code.codepoint = codepoint - 0x40;
|
||||
key->modifiers = TERMKEY_KEYMOD_CTRL|TERMKEY_KEYMOD_ALT;
|
||||
}
|
||||
else {
|
||||
// UTF-8 codepoint
|
||||
key->type = TERMKEY_TYPE_UNICODE;
|
||||
key->code.codepoint = codepoint;
|
||||
key->modifiers = 0;
|
||||
}
|
||||
|
||||
if(key->type == TERMKEY_TYPE_UNICODE)
|
||||
fill_utf8(key);
|
||||
}
|
||||
|
||||
termkey_result termkey_getkey(termkey_t *tk, termkey_key *key)
|
||||
{
|
||||
return (*tk->driver.getkey)(tk, key);
|
||||
@ -273,6 +367,28 @@ const char *termkey_get_keyname(termkey_t *tk, termkey_keysym sym)
|
||||
return "UNKNOWN";
|
||||
}
|
||||
|
||||
static termkey_keysym register_c0(termkey_t *tk, termkey_keysym sym, unsigned char ctrl, const char *name)
|
||||
{
|
||||
return register_c0_full(tk, sym, 0, 0, ctrl, name);
|
||||
}
|
||||
|
||||
static termkey_keysym register_c0_full(termkey_t *tk, termkey_keysym sym, int modifier_set, int modifier_mask, unsigned char ctrl, const char *name)
|
||||
{
|
||||
if(ctrl >= 0x20) {
|
||||
fprintf(stderr, "Cannot register C0 key at ctrl 0x%02x - out of bounds\n", ctrl);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if(name)
|
||||
sym = termkey_register_keyname(tk, sym, name);
|
||||
|
||||
tk->c0[ctrl].sym = sym;
|
||||
tk->c0[ctrl].modifier_set = modifier_set;
|
||||
tk->c0[ctrl].modifier_mask = modifier_mask;
|
||||
|
||||
return sym;
|
||||
}
|
||||
|
||||
size_t termkey_snprint_key(termkey_t *tk, char *buffer, size_t len, termkey_key *key, termkey_format format)
|
||||
{
|
||||
size_t pos = 0;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user