cb5fbbce4e
* remove qfribidi.h and qfribidi.c * simplify get_mirror_char(), use table from Unicode 15.0 * improve bidir_get_type(), compact_list() * use combined type tests for 3, 4 and 6 types * bumped VERSION to 5.4.2
93 lines
3.2 KiB
C
93 lines
3.2 KiB
C
/*
|
|
* Unicode joining algorithms for QEmacs.
|
|
*
|
|
* Copyright (c) 2000 Fabrice Bellard.
|
|
* Copyright (c) 2000-2023 Charlie Gordon.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifndef UNICODE_JOIN_H
|
|
#define UNICODE_JOIN_H
|
|
|
|
int load_ligatures(const char *filename);
|
|
void unload_ligatures(void);
|
|
int combine_accent(char32_t *buf, char32_t c, char32_t accent);
|
|
int expand_ligature(char32_t *buf, char32_t c);
|
|
|
|
int unicode_to_glyphs(char32_t *dst, unsigned int *char_to_glyph_pos,
|
|
int dst_size, char32_t *src, int src_size,
|
|
int reverse);
|
|
|
|
char32_t get_mirror_char(char32_t c);
|
|
|
|
// XXX: should rewrite this part
|
|
typedef enum {
|
|
BIDIR_TYPE_LTR, /* Strong Left-to-Right */
|
|
BIDIR_TYPE_RTL, /* Right-to-left characters */
|
|
BIDIR_TYPE_WL, /* Weak left to right */
|
|
BIDIR_TYPE_WR, /* Weak right to left */
|
|
BIDIR_TYPE_EN, /* European Numeral */
|
|
BIDIR_TYPE_ES, /* European number Separator */
|
|
BIDIR_TYPE_ET, /* European number Terminator */
|
|
BIDIR_TYPE_AN, /* Arabic Numeral */
|
|
BIDIR_TYPE_CS, /* Common Separator */
|
|
BIDIR_TYPE_BS, /* Block Separator */
|
|
BIDIR_TYPE_SS, /* Segment Separator */
|
|
BIDIR_TYPE_WS, /* Whitespace */
|
|
BIDIR_TYPE_AL, /* Arabic Letter */
|
|
BIDIR_TYPE_NSM, /* Non Spacing Mark */
|
|
BIDIR_TYPE_BN, /* Boundary Neutral */
|
|
BIDIR_TYPE_ON, /* Other Neutral */
|
|
BIDIR_TYPE_LRE, /* Left-to-Right Embedding */
|
|
BIDIR_TYPE_RLE, /* Right-to-Left Embedding */
|
|
BIDIR_TYPE_PDF, /* Pop Directional Flag */
|
|
BIDIR_TYPE_LRO, /* Left-to-Right Override */
|
|
BIDIR_TYPE_RLO, /* Right-to-Left Override */
|
|
|
|
/* The following are only used internally */
|
|
BIDIR_TYPE_SOT,
|
|
BIDIR_TYPE_EOT,
|
|
BIDIR_TYPE_N,
|
|
BIDIR_TYPE_E,
|
|
BIDIR_TYPE_CTL, /* Control units */
|
|
BIDIR_TYPE_EO, /* Control units */
|
|
BIDIR_TYPE_DEL, /* type record is to be deleted */
|
|
BIDIR_TYPE_L = BIDIR_TYPE_LTR,
|
|
BIDIR_TYPE_R = BIDIR_TYPE_RTL,
|
|
BIDIR_TYPE_CM = BIDIR_TYPE_ON + 2,
|
|
} BidirCharType;
|
|
|
|
typedef struct BidirTypeLink {
|
|
BidirCharType type;
|
|
int pos;
|
|
int len;
|
|
int level;
|
|
} BidirTypeLink;
|
|
|
|
BidirCharType bidir_get_type(char32_t ch);
|
|
BidirCharType bidir_get_type_test(char32_t ch);
|
|
|
|
void bidir_analyze_string(BidirTypeLink *type_rl_list,
|
|
BidirCharType *pbase_dir,
|
|
int *pmax_level);
|
|
|
|
/* arabic.c */
|
|
int arabic_join(char32_t *line, unsigned int *ctog, int len);
|
|
|
|
/* indic.c */
|
|
int devanagari_log2vis(char32_t *str, unsigned int *ctog, int len);
|
|
|
|
#endif /* UNICODE_JOIN_H */
|