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Moved single byte and UTF-8 sequence recombiner out of driver-csi.c back into termkey.c

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This commit is contained in:
Paul LeoNerd Evans
2008-10-08 00:36:27 +01:00
parent d46f72fc1a
commit ac6cae29bb
3 changed files with 114 additions and 104 deletions
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94
driver-csi.c
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@@ -120,8 +120,6 @@ static void free_driver(void *private)
free(csi);
}
#define UTF8_INVALID 0xFFFD
#define CHARAT(i) (tk->buffer[tk->buffstart + (i)])
static termkey_result getkey_csi(termkey_t *tk, size_t introlen, termkey_key *key)
@@ -332,96 +330,8 @@ static termkey_result getkey(termkey_t *tk, termkey_key *key)
else if(b0 == 0x9b) {
return getkey_csi(tk, 1, key);
}
else if(b0 < 0xa0) {
// Single byte C0, G0 or C1 - C1 is never UTF-8 initial byte
(*tk->method.emit_codepoint)(tk, b0, key);
(*tk->method.eat_bytes)(tk, 1);
return TERMKEY_RES_KEY;
}
else if(tk->flags & TERMKEY_FLAG_UTF8) {
// Some UTF-8
int nbytes;
int codepoint;
key->type = TERMKEY_TYPE_UNICODE;
key->modifiers = 0;
if(b0 < 0xc0) {
// Starts with a continuation byte - that's not right
(*tk->method.emit_codepoint)(tk, UTF8_INVALID, key);
(*tk->method.eat_bytes)(tk, 1);
return TERMKEY_RES_KEY;
}
else if(b0 < 0xe0) {
nbytes = 2;
codepoint = b0 & 0x1f;
}
else if(b0 < 0xf0) {
nbytes = 3;
codepoint = b0 & 0x0f;
}
else if(b0 < 0xf8) {
nbytes = 4;
codepoint = b0 & 0x07;
}
else if(b0 < 0xfc) {
nbytes = 5;
codepoint = b0 & 0x03;
}
else if(b0 < 0xfe) {
nbytes = 6;
codepoint = b0 & 0x01;
}
else {
(*tk->method.emit_codepoint)(tk, UTF8_INVALID, key);
(*tk->method.eat_bytes)(tk, 1);
return TERMKEY_RES_KEY;
}
if(tk->buffcount < nbytes)
return tk->waittime ? TERMKEY_RES_AGAIN : TERMKEY_RES_NONE;
for(int b = 1; b < nbytes; b++) {
unsigned char cb = CHARAT(b);
if(cb < 0x80 || cb >= 0xc0) {
(*tk->method.emit_codepoint)(tk, UTF8_INVALID, key);
(*tk->method.eat_bytes)(tk, b - 1);
return TERMKEY_RES_KEY;
}
codepoint <<= 6;
codepoint |= cb & 0x3f;
}
// Check for overlong sequences
if(nbytes > utf8_seqlen(codepoint))
codepoint = UTF8_INVALID;
// Check for UTF-16 surrogates or invalid codepoints
if((codepoint >= 0xD800 && codepoint <= 0xDFFF) ||
codepoint == 0xFFFE ||
codepoint == 0xFFFF)
codepoint = UTF8_INVALID;
(*tk->method.emit_codepoint)(tk, codepoint, key);
(*tk->method.eat_bytes)(tk, nbytes);
return TERMKEY_RES_KEY;
}
else {
// Non UTF-8 case - just report the raw byte
key->type = TERMKEY_TYPE_UNICODE;
key->code.codepoint = b0;
key->modifiers = 0;
key->utf8[0] = key->code.codepoint;
key->utf8[1] = 0;
(*tk->method.eat_bytes)(tk, 1);
return TERMKEY_RES_KEY;
}
return TERMKEY_SYM_NONE;
else
return (*tk->method.getkey_simple)(tk, key);
}
static termkey_keysym register_csi_ss3(termkey_csi *csi, termkey_type type, termkey_keysym sym, unsigned char cmd, const char *name)