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Group combining diacritics

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-01-07 16:37:53 +01:00
parent 89784252dc
commit 72f12cdcd9
7 changed files with 1116 additions and 561 deletions
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88
include/grub/unicode.h Normal file
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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2010 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_BIDI_HEADER
#define GRUB_BIDI_HEADER 1
#include <grub/types.h>
struct grub_unicode_compact_range
{
grub_uint32_t start:21;
grub_uint32_t end:21;
grub_uint8_t bidi_type:5;
grub_uint8_t comb_type;
} __attribute__ ((packed));
enum grub_bidi_type
{
GRUB_BIDI_TYPE_L = 0,
GRUB_BIDI_TYPE_LRE,
GRUB_BIDI_TYPE_LRO,
GRUB_BIDI_TYPE_R,
GRUB_BIDI_TYPE_AL,
GRUB_BIDI_TYPE_RLE,
GRUB_BIDI_TYPE_RLO,
GRUB_BIDI_TYPE_PDF,
GRUB_BIDI_TYPE_EN,
GRUB_BIDI_TYPE_ES,
GRUB_BIDI_TYPE_ET,
GRUB_BIDI_TYPE_AN,
GRUB_BIDI_TYPE_CS,
GRUB_BIDI_TYPE_NSM,
GRUB_BIDI_TYPE_BN,
GRUB_BIDI_TYPE_B,
GRUB_BIDI_TYPE_S,
GRUB_BIDI_TYPE_WS,
GRUB_BIDI_TYPE_ON
};
enum grub_comb_type
{
GRUB_UNICODE_STACK_BELOW = 220,
GRUB_UNICODE_STACK_ABOVE = 230,
/* If combining nature is indicated only by class and
not "combining type". */
GRUB_UNICODE_COMB_ME = 253,
GRUB_UNICODE_COMB_MC = 254,
GRUB_UNICODE_COMB_MN = 255,
};
/* This structure describes a glyph as opposed to character. */
struct grub_unicode_glyph
{
grub_uint32_t base;
/* Unicode permits 256 variation selectors but since we need a value
for "default" we have to use grub_uint16_t. */
grub_uint16_t variant;
grub_size_t ncomb;
grub_uint32_t *combining;
};
#define GRUB_UNICODE_VARIATION_SELECTOR_1 0xfe00
#define GRUB_UNICODE_VARIATION_SELECTOR_16 0xfe0f
#define GRUB_UNICODE_VARIATION_SELECTOR_17 0xe0100
#define GRUB_UNICODE_VARIATION_SELECTOR_256 0xe01ef
extern struct grub_unicode_compact_range grub_unicode_compact[];
#define GRUB_UNICODE_MAX_CACHED_CHAR 0x20000
/* Unicode mandates an arbitrary limit. */
#define GRUB_BIDI_MAX_EXPLICIT_LEVEL 61
#endif