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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>
#include <grub/mm.h>
#include <grub/misc.h>
struct grub_unicode_bidi_pair
{
grub_uint32_t key;
grub_uint32_t replace;
};
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;
grub_uint8_t bidi_mirror:1;
grub_uint8_t join_type:3;
} __attribute__ ((packed));
/* Old-style Arabic shaping. Used for "visual UTF-8" and
in grub-mkfont to find variant glyphs in absence of GPOS tables. */
struct grub_unicode_arabic_shape
{
grub_uint32_t code;
grub_uint32_t isolated;
grub_uint32_t right_linked;
grub_uint32_t both_linked;
grub_uint32_t left_linked;
};
extern struct grub_unicode_arabic_shape grub_unicode_arabic_shapes[];
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_join_type
{
GRUB_JOIN_TYPE_NONJOINING = 0,
GRUB_JOIN_TYPE_LEFT = 1,
GRUB_JOIN_TYPE_RIGHT = 2,
GRUB_JOIN_TYPE_DUAL = 3,
GRUB_JOIN_TYPE_CAUSING = 4,
GRUB_JOIN_TYPE_TRANSPARENT = 5
};
enum grub_comb_type
{
GRUB_UNICODE_COMB_NONE = 0,
GRUB_UNICODE_COMB_OVERLAY = 1,
GRUB_UNICODE_COMB_HEBREW_SHEVA = 10,
GRUB_UNICODE_COMB_HEBREW_HATAF_SEGOL = 11,
GRUB_UNICODE_COMB_HEBREW_HATAF_PATAH = 12,
GRUB_UNICODE_COMB_HEBREW_HATAF_QAMATS = 13,
GRUB_UNICODE_COMB_HEBREW_HIRIQ = 14,
GRUB_UNICODE_COMB_HEBREW_TSERE = 15,
GRUB_UNICODE_COMB_HEBREW_SEGOL = 16,
GRUB_UNICODE_COMB_HEBREW_PATAH = 17,
GRUB_UNICODE_COMB_HEBREW_QAMATS = 18,
GRUB_UNICODE_COMB_HEBREW_HOLAM = 19,
GRUB_UNICODE_COMB_HEBREW_QUBUTS = 20,
GRUB_UNICODE_COMB_HEBREW_DAGESH = 21,
GRUB_UNICODE_COMB_HEBREW_METEG = 22,
GRUB_UNICODE_COMB_HEBREW_RAFE = 23,
GRUB_UNICODE_COMB_HEBREW_SHIN_DOT = 24,
GRUB_UNICODE_COMB_HEBREW_SIN_DOT = 25,
GRUB_UNICODE_COMB_HEBREW_VARIKA = 26,
GRUB_UNICODE_COMB_ARABIC_FATHATAN = 27,
GRUB_UNICODE_COMB_ARABIC_DAMMATAN = 28,
GRUB_UNICODE_COMB_ARABIC_KASRATAN = 29,
GRUB_UNICODE_COMB_ARABIC_FATHAH = 30,
GRUB_UNICODE_COMB_ARABIC_DAMMAH = 31,
GRUB_UNICODE_COMB_ARABIC_KASRA = 32,
GRUB_UNICODE_COMB_ARABIC_SHADDA = 33,
GRUB_UNICODE_COMB_ARABIC_SUKUN = 34,
GRUB_UNICODE_COMB_ARABIC_SUPERSCRIPT_ALIF = 35,
GRUB_UNICODE_COMB_SYRIAC_SUPERSCRIPT_ALAPH = 36,
GRUB_UNICODE_STACK_ATTACHED_BELOW = 202,
GRUB_UNICODE_STACK_ATTACHED_ABOVE = 214,
GRUB_UNICODE_COMB_ATTACHED_ABOVE_RIGHT = 216,
GRUB_UNICODE_STACK_BELOW = 220,
GRUB_UNICODE_COMB_BELOW_RIGHT = 222,
GRUB_UNICODE_COMB_ABOVE_LEFT = 228,
GRUB_UNICODE_STACK_ABOVE = 230,
GRUB_UNICODE_COMB_ABOVE_RIGHT = 232,
GRUB_UNICODE_COMB_YPOGEGRAMMENI = 240,
/* 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;
grub_uint16_t variant:9;
grub_uint8_t attributes:5;
grub_size_t ncomb;
struct grub_unicode_combining {
grub_uint32_t code;
enum grub_comb_type type;
} *combining;
/* Hint by unicode subsystem how wide this character usually is.
Real width is determined by font. Set only in UTF-8 stream. */
int estimated_width;
};
#define GRUB_UNICODE_GLYPH_ATTRIBUTE_MIRROR 0x1
#define GRUB_UNICODE_GLYPH_ATTRIBUTES_JOIN_LEFT_TO_RIGHT_SHIFT 1
#define GRUB_UNICODE_GLYPH_ATTRIBUTE_LEFT_JOINED 0x2
#define GRUB_UNICODE_GLYPH_ATTRIBUTE_RIGHT_JOINED \
(GRUB_UNICODE_GLYPH_ATTRIBUTE_LEFT_JOINED \
<< GRUB_UNICODE_GLYPH_ATTRIBUTES_JOIN_LEFT_TO_RIGHT_SHIFT)
/* Set iff the corresponding joining flags come from ZWJ or ZWNJ. */
#define GRUB_UNICODE_GLYPH_ATTRIBUTE_LEFT_JOINED_EXPLICIT 0x8
#define GRUB_UNICODE_GLYPH_ATTRIBUTE_RIGHT_JOINED_EXPLICIT \
(GRUB_UNICODE_GLYPH_ATTRIBUTE_LEFT_JOINED_EXPLICIT \
<< GRUB_UNICODE_GLYPH_ATTRIBUTES_JOIN_LEFT_TO_RIGHT_SHIFT)
#define GRUB_UNICODE_GLYPH_ATTRIBUTES_JOIN \
(GRUB_UNICODE_GLYPH_ATTRIBUTE_LEFT_JOINED \
| GRUB_UNICODE_GLYPH_ATTRIBUTE_RIGHT_JOINED \
| GRUB_UNICODE_GLYPH_ATTRIBUTE_LEFT_JOINED_EXPLICIT \
| GRUB_UNICODE_GLYPH_ATTRIBUTE_RIGHT_JOINED_EXPLICIT)
enum
{
GRUB_UNICODE_COMBINING_GRAPHEME_JOINER = 0x034f,
GRUB_UNICODE_HEBREW_WAW = 0x05d5,
GRUB_UNICODE_ARABIC_START = 0x0600,
GRUB_UNICODE_ARABIC_END = 0x0700,
GRUB_UNICODE_THAANA_ABAFILI = 0x07a6,
GRUB_UNICODE_THAANA_AABAAFILI = 0x07a7,
GRUB_UNICODE_THAANA_IBIFILI = 0x07a8,
GRUB_UNICODE_THAANA_EEBEEFILI = 0x07a9,
GRUB_UNICODE_THAANA_UBUFILI = 0x07aa,
GRUB_UNICODE_THAANA_OOBOOFILI = 0x07ab,
GRUB_UNICODE_THAANA_EBEFILI = 0x07ac,
GRUB_UNICODE_THAANA_EYBEYFILI = 0x07ad,
GRUB_UNICODE_THAANA_OBOFILI = 0x07ae,
GRUB_UNICODE_THAANA_OABOAFILI = 0x07af,
GRUB_UNICODE_THAANA_SUKUN = 0x07b0,
GRUB_UNICODE_ZWNJ = 0x200c,
GRUB_UNICODE_ZWJ = 0x200d,
GRUB_UNICODE_LEFTARROW = 0x2190,
GRUB_UNICODE_UPARROW = 0x2191,
GRUB_UNICODE_RIGHTARROW = 0x2192,
GRUB_UNICODE_DOWNARROW = 0x2193,
GRUB_UNICODE_LIGHT_HLINE = 0x2500,
GRUB_UNICODE_HLINE = 0x2501,
GRUB_UNICODE_LIGHT_VLINE = 0x2502,
GRUB_UNICODE_VLINE = 0x2503,
GRUB_UNICODE_LIGHT_CORNER_UL = 0x250c,
GRUB_UNICODE_CORNER_UL = 0x250f,
GRUB_UNICODE_LIGHT_CORNER_UR = 0x2510,
GRUB_UNICODE_CORNER_UR = 0x2513,
GRUB_UNICODE_LIGHT_CORNER_LL = 0x2514,
GRUB_UNICODE_CORNER_LL = 0x2517,
GRUB_UNICODE_LIGHT_CORNER_LR = 0x2518,
GRUB_UNICODE_CORNER_LR = 0x251b,
GRUB_UNICODE_BLACK_UP_TRIANGLE = 0x25b2,
GRUB_UNICODE_BLACK_RIGHT_TRIANGLE = 0x25ba,
GRUB_UNICODE_BLACK_DOWN_TRIANGLE = 0x25bc,
GRUB_UNICODE_BLACK_LEFT_TRIANGLE = 0x25c4,
GRUB_UNICODE_VARIATION_SELECTOR_1 = 0xfe00,
GRUB_UNICODE_VARIATION_SELECTOR_16 = 0xfe0f,
GRUB_UNICODE_VARIATION_SELECTOR_17 = 0xe0100,
GRUB_UNICODE_VARIATION_SELECTOR_256 = 0xe01ef
};
extern struct grub_unicode_compact_range grub_unicode_compact[];
extern struct grub_unicode_bidi_pair grub_unicode_bidi_pairs[];
#define GRUB_UNICODE_MAX_CACHED_CHAR 0x20000
/* Unicode mandates an arbitrary limit. */
#define GRUB_BIDI_MAX_EXPLICIT_LEVEL 61
grub_ssize_t
grub_bidi_logical_to_visual (const grub_uint32_t *logical,
grub_size_t logical_len,
struct grub_unicode_glyph **visual_out,
grub_ssize_t (*getcharwidth) (const struct grub_unicode_glyph *visual),
grub_size_t max_width,
grub_size_t start_width);
enum grub_comb_type
grub_unicode_get_comb_type (grub_uint32_t c);
grub_size_t
grub_unicode_aglomerate_comb (const grub_uint32_t *in, grub_size_t inlen,
struct grub_unicode_glyph *out);
static inline struct grub_unicode_glyph *
grub_unicode_glyph_dup (const struct grub_unicode_glyph *in)
{
struct grub_unicode_glyph *out = grub_malloc (sizeof (*out));
if (!out)
return NULL;
grub_memcpy (out, in, sizeof (*in));
if (in->combining)
{
out->combining = grub_malloc (in->ncomb * sizeof (*in));
if (!out->combining)
{
grub_free (out);
return NULL;
}
grub_memcpy (out->combining, in->combining, in->ncomb * sizeof (*in));
}
return out;
}
static inline struct grub_unicode_glyph *
grub_unicode_glyph_from_code (grub_uint32_t code)
{
struct grub_unicode_glyph *ret;
ret = grub_zalloc (sizeof (*ret));
if (!ret)
return NULL;
ret->base = code;
return ret;
}
grub_uint32_t
grub_unicode_mirror_code (grub_uint32_t in);
grub_uint32_t
grub_unicode_shape_code (grub_uint32_t in, grub_uint8_t attr);
#endif
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