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Internal screen data rewrite for better 256 colour/UTF-8 support.

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This commit is contained in:
Nicholas Marriott
2008-09-25 20:08:57 +00:00
parent 9edb4d4b85
commit efe557313a
24 changed files with 2474 additions and 2421 deletions
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139
utf8.c
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@@ -1,4 +1,4 @@
/* $Id: utf8.c,v 1.1 2008-09-09 22:16:37 nicm Exp $ */
/* $Id: utf8.c,v 1.2 2008-09-25 20:08:56 nicm Exp $ */
/*
* Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -22,93 +22,66 @@
#include "tmux.h"
/*
* UTF8 data structures. Just crappy array + linear search for now.
*/
/* Pack UTF8 index into attr, data. */
void
utf8_pack(int idx, u_char *data, u_short *attr)
u_int
utf8_combine(const u_char data[4])
{
*data = idx & 0xff;
u_int uv;
*attr &= ~(ATTR_UTF8b8|ATTR_UTF8b9);
if (idx & 0x100)
*attr |= ATTR_UTF8b8;
if (idx & 0x200)
*attr |= ATTR_UTF8b9;
if (idx & 0x400)
*attr |= ATTR_UTF8b10;
if (idx & 0x800)
*attr |= ATTR_UTF8b11;
}
/* Unpack UTF8 index from attr, data. */
int
utf8_unpack(u_char data, u_short attr)
{
int idx;
idx = data;
if (attr & ATTR_UTF8b8)
idx |= 0x100;
if (attr & ATTR_UTF8b9)
idx |= 0x200;
if (attr & ATTR_UTF8b10)
idx |= 0x400;
if (attr & ATTR_UTF8b11)
idx |= 0x800;
return (idx);
}
void
utf8_init(struct utf8_table *utab, int limit)
{
utab->limit = limit;
ARRAY_INIT(&utab->array);
}
void
utf8_free(struct utf8_table *utab)
{
ARRAY_FREE(&utab->array);
}
struct utf8_data *
utf8_lookup(struct utf8_table *utab, int idx)
{
if (idx < 0 || idx >= (int) ARRAY_LENGTH(&utab->array))
return (NULL);
return (&ARRAY_ITEM(&utab->array, idx));
}
int
utf8_search(struct utf8_table *utab, struct utf8_data *udat)
{
u_int idx;
for (idx = 0; idx < ARRAY_LENGTH(&utab->array); idx++) {
if (memcmp(udat->data,
ARRAY_ITEM(&utab->array, idx).data, sizeof udat->data) == 0)
return (idx);
if (data[1] == 0xff)
uv = data[0];
else if (data[2] == 0xff) {
uv = data[1] & 0x3f;
uv |= (data[0] & 0x1f) << 6;
} else if (data[3] == 0xff) {
uv = data[2] & 0x3f;
uv |= (data[1] & 0x3f) << 6;
uv |= (data[0] & 0x0f) << 12;
} else {
uv = data[3] & 0x3f;
uv |= (data[2] & 0x3f) << 6;
uv |= (data[1] & 0x3f) << 12;
uv |= (data[0] & 0x3f) << 18;
}
return (uv);
}
void
utf8_split(u_int uv, u_char data[4])
{
memset(data, 0xff, sizeof data);
if (uv <= 0x7f)
data[0] = uv;
else if (uv > 0x7f && uv <= 0x7ff) {
data[0] = (uv >> 6) | 0xc0;
data[1] = (uv & 0x3f) | 0x80;
} else if (uv > 0x7ff && uv <= 0xffff) {
data[0] = (uv >> 12) | 0xe0;
data[1] = ((uv >> 6) & 0x3f) | 0x80;
data[2] = (uv & 0x3f) | 0x80;
} else if (uv > 0xffff && uv <= 0x10ffff) {
data[0] = (uv >> 18) | 0xf0;
data[1] = ((uv >> 12) & 0x3f) | 0x80;
data[2] = ((uv >> 6) & 0x3f) | 0x80;
data[3] = (uv & 0x3f) | 0x80;
}
return (-1);
}
int
utf8_add(struct utf8_table *utab, struct utf8_data *udat)
utf8_width(u_int uv)
{
int idx;
if (ARRAY_LENGTH(&utab->array) == utab->limit)
return (-1);
if ((idx = utf8_search(utab, udat)) != -1)
return (idx);
ARRAY_EXPAND(&utab->array, 1);
memcpy(
&ARRAY_LAST(&utab->array), udat, sizeof ARRAY_LAST(&utab->array));
return (ARRAY_LENGTH(&utab->array) - 1);
if ((uv >= 0x1100 && uv <= 0x115f) ||
uv == 0x2329 ||
uv == 0x232a ||
(uv >= 0x2e80 && uv <= 0xa4cf && uv != 0x303f) ||
(uv >= 0xac00 && uv <= 0xd7a3) ||
(uv >= 0xf900 && uv <= 0xfaff) ||
(uv >= 0xfe10 && uv <= 0xfe19) ||
(uv >= 0xfe30 && uv <= 0xfe6f) ||
(uv >= 0xff00 && uv <= 0xff60) ||
(uv >= 0xffe0 && uv <= 0xffe6) ||
(uv >= 0x20000 && uv <= 0x2fffd) ||
(uv >= 0x30000 && uv <= 0x3fffd))
return (2);
return (1);
}