1 | /* gunibreak.c - line break properties |
2 | * |
3 | * Copyright 2000 Red Hat, Inc. |
4 | * |
5 | * This library is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU Lesser General Public |
7 | * License as published by the Free Software Foundation; either |
8 | * version 2.1 of the License, or (at your option) any later version. |
9 | * |
10 | * This library is distributed in the hope that it will be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | * Lesser General Public License for more details. |
14 | * |
15 | * You should have received a copy of the GNU Lesser General Public License |
16 | * along with this library; if not, see <http://www.gnu.org/licenses/>. |
17 | */ |
18 | |
19 | #include "config.h" |
20 | |
21 | #include <stdlib.h> |
22 | |
23 | #include "gunibreak.h" |
24 | |
25 | #define TPROP_PART1(Page, Char) \ |
26 | ((break_property_table_part1[Page] >= G_UNICODE_MAX_TABLE_INDEX) \ |
27 | ? (break_property_table_part1[Page] - G_UNICODE_MAX_TABLE_INDEX) \ |
28 | : (break_property_data[break_property_table_part1[Page]][Char])) |
29 | |
30 | #define TPROP_PART2(Page, Char) \ |
31 | ((break_property_table_part2[Page] >= G_UNICODE_MAX_TABLE_INDEX) \ |
32 | ? (break_property_table_part2[Page] - G_UNICODE_MAX_TABLE_INDEX) \ |
33 | : (break_property_data[break_property_table_part2[Page]][Char])) |
34 | |
35 | #define PROP(Char) \ |
36 | (((Char) <= G_UNICODE_LAST_CHAR_PART1) \ |
37 | ? TPROP_PART1 ((Char) >> 8, (Char) & 0xff) \ |
38 | : (((Char) >= 0xe0000 && (Char) <= G_UNICODE_LAST_CHAR) \ |
39 | ? TPROP_PART2 (((Char) - 0xe0000) >> 8, (Char) & 0xff) \ |
40 | : G_UNICODE_BREAK_UNKNOWN)) |
41 | |
42 | /** |
43 | * g_unichar_break_type: |
44 | * @c: a Unicode character |
45 | * |
46 | * Determines the break type of @c. @c should be a Unicode character |
47 | * (to derive a character from UTF-8 encoded text, use |
48 | * g_utf8_get_char()). The break type is used to find word and line |
49 | * breaks ("text boundaries"), Pango implements the Unicode boundary |
50 | * resolution algorithms and normally you would use a function such |
51 | * as pango_break() instead of caring about break types yourself. |
52 | * |
53 | * Returns: the break type of @c |
54 | **/ |
55 | GUnicodeBreakType |
56 | g_unichar_break_type (gunichar c) |
57 | { |
58 | return PROP (c); |
59 | } |
60 | |