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Support UTF-8 key bindings by expanding the key type from int to

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uint64_t and converting UTF-8 to Unicode on input and the reverse on
output. (This allows key bindings, there are still omissions - the
largest being that the various prompts do not accept UTF-8.)
This commit is contained in:
nicm
2015-11-12 11:05:34 +00:00
parent 7062b0e65d
commit 69e0b8326a
19 changed files with 280 additions and 168 deletions
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34
utf8.c
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@ -394,6 +394,8 @@ utf8_open(struct utf8_data *utf8data, u_char ch)
int
utf8_append(struct utf8_data *utf8data, u_char ch)
{
/* XXX this should do validity checks too! */
if (utf8data->have >= utf8data->size)
fatalx("UTF-8 character overflow");
if (utf8data->size > sizeof utf8data->data)
@ -467,18 +469,46 @@ utf8_combine(const struct utf8_data *utf8data)
case 3:
value = utf8data->data[2] & 0x3f;
value |= (utf8data->data[1] & 0x3f) << 6;
value |= (utf8data->data[0] & 0x0f) << 12;
value |= (utf8data->data[0] & 0xf) << 12;
break;
case 4:
value = utf8data->data[3] & 0x3f;
value |= (utf8data->data[2] & 0x3f) << 6;
value |= (utf8data->data[1] & 0x3f) << 12;
value |= (utf8data->data[0] & 0x07) << 18;
value |= (utf8data->data[0] & 0x7) << 18;
break;
}
return (value);
}
/* Split a UTF-8 character. */
int
utf8_split(u_int uc, struct utf8_data *utf8data)
{
if (uc < 0x7f) {
utf8data->size = 1;
utf8data->data[0] = uc;
} else if (uc < 0x7ff) {
utf8data->size = 2;
utf8data->data[0] = 0xc0 | ((uc >> 6) & 0x1f);
utf8data->data[1] = 0x80 | (uc & 0x3f);
} else if (uc < 0xffff) {
utf8data->size = 3;
utf8data->data[0] = 0xe0 | ((uc >> 12) & 0xf);
utf8data->data[1] = 0x80 | ((uc >> 6) & 0x3f);
utf8data->data[2] = 0x80 | (uc & 0x3f);
} else if (uc < 0x1fffff) {
utf8data->size = 4;
utf8data->data[0] = 0xf0 | ((uc >> 18) & 0x7);
utf8data->data[1] = 0x80 | ((uc >> 12) & 0x3f);
utf8data->data[2] = 0x80 | ((uc >> 6) & 0x3f);
utf8data->data[3] = 0x80 | (uc & 0x3f);
} else
return (-1);
utf8data->width = utf8_width(utf8data);
return (0);
}
/* Split a two-byte UTF-8 character. */
u_int
utf8_split2(u_int uc, u_char *ptr)