1 /* m17n-flt.c -- Font Layout Table sub-module.
2 Copyright (C) 2003, 2004, 2007
3 National Institute of Advanced Industrial Science and Technology (AIST)
4 Registration Number H15PRO112
6 This file is part of the m17n library.
8 The m17n library is free software; you can redistribute it and/or
9 modify it under the terms of the GNU Lesser General Public License
10 as published by the Free Software Foundation; either version 2.1 of
11 the License, or (at your option) any later version.
13 The m17n library is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public
19 License along with the m17n library; if not, write to the Free
20 Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
25 @brief FLT support for a window system.
27 This section defines the m17n FLT API concerning character
28 layouting facility using FLT (Font Layout Table). The format of
29 FLT is described in @ref mdbFLT. */
33 @brief ¥¦¥£¥ó¥É¥¦¥·¥¹¥Æ¥à¤Î¤¿¤á¤Î FLT ¥µ¥Ý¡¼¥È.
35 ¤³¤Î¥»¥¯¥·¥ç¥ó¤Ç¤Ï¡¢FLT (Font Layout Table)
36 ¤òÍѤ¤¤¿Ê¸»ú¥ì¥¤¥¢¥¦¥Èµ¡Ç½¤Ë´Ø¤¹¤ë m17n FLT API ¤òÄêµÁ¤¹¤ë¡£
37 FLT ¤Î·Á¼°¤Ï @ref mdbFLT ¤Ëµ½Ò¤µ¤ì¤Æ¤¤¤ë¡£ */
41 #if !defined (FOR_DOXYGEN) || defined (DOXYGEN_INTERNAL_MODULE)
42 /*** @addtogroup m17nInternal
51 #include <sys/types.h>
54 #include "m17n-core.h"
56 #include "m17n-misc.h"
62 #include "internal-flt.h"
66 /* Font Layout Table (FLT)
68 Predefined terms: SYMBOL, INTEGER, STRING
70 FLT ::= '(' STAGE + ')'
72 STAGE ::= CATEGORY-TABLE ? FONT-LAYOUT-RULE
74 ;; Each STAGE consumes a source (code sequence) and produces another
75 ;; code sequence that is given to the next STAGE as a source. The
76 ;; source given to the first stage is a sequence of character codes
77 ;; that are assigned category codes by CATEGORY-TABLE. The output of
78 ;; the last stage is a glyph code sequence given to the renderer.
81 '(' 'category' CATEGORY-SPEC + ')'
83 '(' CODE [ CODE ] CATEGORY ')'
86 ;; ASCII character codes of alphabet ('A' .. 'Z' 'a' .. 'z').
89 ;; (0x0900 0x097F ?E) ; All Devanagari characters
90 ;; (0x093C ?N)) ; DEVANAGARI-LETTER NUKTA
91 ;; Assign the category 'E' to all Devanagari characters but 0x093C,
92 ;; assign the category 'N' to 0x093C.
95 '(' 'generator' RULE MACRO-DEF * ')'
97 RULE ::= COMMAND | REGEXP-RULE | MATCH-RULE | MAP-RULE
98 | COND-STRUCT | MACRO-NAME
101 DIRECT-CODE | COMBINING | PREDEFIND-COMMAND | OTF-COMMAND
103 DIRECT-CODE ::= INTEGER
104 ;; Always succeed. Produce the code. Consume no source.
106 PREDEFIND-COMMAND ::=
107 '=' | '*' | '<' | '>' | '|'
109 ;; '=': Succeed when the current run contains at least one code.
110 ;; Consume the first code in the current run, and produce it as is.
112 ;; '*': If the the previous command succeeded, repeat it until it
115 ;; '<': Produce a special code that indicates the start of grapheme
116 ;; cluster. Succeed always, consume nothing.
118 ;; '>': Produce a special code that indicates the end of grapheme
119 ;; cluster. Succeed always, consume nothing.
121 ;; '|': Produce a special code whose category is ' '. Succeed always,
125 'otf:''SCRIPT'[':'['LANGSYS'][':'[GSUB-FEATURES][':'GPOS-FEATURES]]]
126 ;; Run the Open Type Layout Table on the current run. Succeed always,
130 ;; OTF's ScriptTag name (four letters) listed at:
131 ;; <http://www.microsoft.om/typograph/otspec/scripttags.htm>
133 ;; OTF's Language System name (four letters) listed at:
134 ;; <http://www.microsoft.om/typograph/otspec/languagetags.htm>
136 GSUB-FEATURES ::= [FEATURE[,FEATURE]*] | ' '
137 GPOS-FEATURES ::= [FEATURE[,FEATURE]*] | ' '
139 ;; OTF's Feature name (four letters) listed at:
140 ;; <http://www.microsoft.om/typograph/otspec/???.htm>
142 OTF-TAG ::= PRINTABLE-CHAR PRINTABLE-CHAR PRINTABLE-CHAR PRINTABLE-CHAR
146 ;; Run all features in the default langsys of 'deva' script.
147 ;; 'otf:deva::nukt:haln'
148 ;; Run all GSUB features, run 'nukt' and 'haln' GPOS features.
150 ;; Run all GSUB features, run no GPOS features.
153 '(' REGEXP RULE * ')'
155 ;; Succeed if REGXP matches the head of source. Run RULEs while
156 ;; limiting the source to the matching part. Consume that part.
159 ;; Must be composed only from ASCII characters. 'A' - 'Z', 'a' - 'z'
160 ;; correspond to CATEGORY.
167 '(' MATCH-IDX RULE * ')'
169 ;; Succeed if the previous REGEXP-RULE found a matching part for
170 ;; MATCH-IDX. Run RULEs while limiting the source to the matching
171 ;; part. If MATCH-IDX is zero, consume the whole part, else consume
174 MATCH-IDX ::= INTEGER
181 '(' ( SOURCE-SEQ | SOURCE-RANGE ) RULE * ')'
183 ;; Succeed if the source matches SOURCE-SEQ or SOURCE-RANGE. Run
184 ;; RULEs while limiting the source to the matching part. Consume that
190 '(' 'range' CODE CODE ')'
192 ;; ((0x0915 0x094D) 0x43)
193 ;; If the source code sequence is 0x0915 0x094D, produce 0x43.
194 ;; ((range 0x0F40 0x0F6A) 0x2221)
195 ;; If the first source code CODE is in the range 0x0F40..0x0F6A,
196 ;; produce (0x2221 + (CODE - 0x0F40)).
199 '(' 'cond' RULE + ')'
201 ;; Try each rule in sequence until one succeeds. Succeed if one
202 ;; succeeds. Consume nothing.
206 ;; ((0x0915 0x094D) 0x43)
207 ;; ((range 0x0F40 0x0F6A) 0x2221)
210 COMBINING ::= 'V''H''O''V''H'
211 V ::= ( 't' | 'c' | 'b' | 'B' )
212 H ::= ( 'l' | 'c' | 'r' )
213 O ::= ( '.' | XOFF | YOFF | XOFF YOFF )
214 XOFF ::= '<'INTEGER | '>'INTEGER
215 YOFF ::= '+'INTEGER | '-'INTEGER
216 ;; INTEGER must be integer 0..127
218 ;; VH pair indicates 12 reference points of a glyph as below:
220 ;; 0----1----2 <---- ascent 0:tl (top-left)
221 ;; | | 1:tc (top-center)
222 ;; | | 2:tr (top-right)
223 ;; | | 3:Bl (base-left)
224 ;; 9 10 11 <---- center 4:Bc (base-center)
225 ;; | | 5:Br (base-right)
226 ;; --3----4----5-- <-- baseline 6:bl (bottom-left)
227 ;; | | 7:bc (bottom-center)
228 ;; 6----7----8 <---- descent 8:br (bottom-right)
229 ;; 9:cl (center-left)
230 ;; | | | 10:cc (center-center)
231 ;; left center right 11:cr (center-right)
235 ;; Align top-left point of the previous glyph and bottom-center
236 ;; point of the current glyph.
238 ;; Align 20% left and 10% below of base-left point of the previous
239 ;; glyph and base-right point of the current glyph.
242 '(' MACRO-NAME RULE + ')'
243 MACRO-NAME ::= SYMBOL
247 static int mdebug_flag = MDEBUG_FONT_FLT;
249 MSymbol Mfont, Mlayouter, Mcombining;
251 static MSymbol Mgenerator, Mend;
253 static MPlist *flt_list;
254 static int flt_min_coverage, flt_max_coverage;
258 CombiningCodeMask = 0xFFFFFFF,
259 LeftPaddingMask = 1 << 28,
260 RightPaddingMask = 1 << 29
263 #define SET_GLYPH_INFO(g, mask, ctx, info) \
264 ((g)->internal = (((g)->internal & ~(mask)) | (info)), \
265 (ctx)->check_mask |= (mask))
267 #define GET_COMBINING_CODE(g) ((g)->internal & CombiningCodeMask)
268 #define SET_COMBINING_CODE(g, ctx, code) \
269 SET_GLYPH_INFO (g, CombiningCodeMask, ctx, code)
270 #define GET_LEFT_PADDING(g) ((g)->internal & LeftPaddingMask)
271 #define SET_LEFT_PADDING(g, ctx, flag) \
272 SET_GLYPH_INFO (g, LeftPaddingMask, ctx, flag)
273 #define GET_RIGHT_PADDING(g) ((g)->internal & RightPaddingMask)
274 #define SET_RIGHT_PADDING(g, ctx, flag) \
275 SET_GLYPH_INFO (g, RightPaddingMask, ctx, flag)
276 #define GET_ENCODED(g) ((g)->encoded)
277 #define SET_ENCODED(g, flag) ((g)->encoded = (flag))
278 #define GET_MEASURED(g) ((g)->measured)
279 #define SET_MEASURED(g, flag) ((g)->measured = (flag))
281 #define GINIT(gstring, n) \
283 if (! (gstring)->glyph_size) \
284 (gstring)->glyph_size = sizeof (MFLTGlyph); \
285 (gstring)->glyphs = alloca ((gstring)->glyph_size * (n)); \
286 (gstring)->allocated = (n); \
287 (gstring)->used = 0; \
290 #define GALLOCA (gstring) \
291 ((MFLTGlyph *) alloca ((gstring)->glyph_size))
293 #define GREF(gstring, idx) \
294 ((MFLTGlyph *) ((char *) ((gstring)->glyphs) + (gstring)->glyph_size * (idx)))
296 #define PREV(gstring, g) \
297 ((MFLTGlyph *) ((char *) (g) - (gstring)->glyph_size))
299 #define NEXT(gstring, g) \
300 ((MFLTGlyph *) ((char *) (g) + (gstring)->glyph_size))
302 #define GCPY(src, src_idx, n, tgt, tgt_idx) \
304 memcpy ((char *) ((tgt)->glyphs) + (tgt)->glyph_size * (tgt_idx), \
305 (char *) ((src)->glyphs) + (src)->glyph_size * (src_idx), \
306 (src)->glyph_size * (n)); \
309 #define GDUP(ctx, idx) \
311 MFLTGlyphString *src = (ctx)->in; \
312 MFLTGlyphString *tgt = (ctx)->out; \
313 if (tgt->allocated <= tgt->used) \
315 GCPY (src, (idx), 1, tgt, tgt->used); \
320 GREPLACE (MFLTGlyphString *src, int src_from, int src_to,
321 MFLTGlyphString *tgt, int tgt_from, int tgt_to)
323 int src_len = src_to - src_from;
324 int tgt_len = tgt_to - tgt_from;
325 int inc = src_len - tgt_len;
327 if (tgt->allocated < tgt->used + inc)
329 if (inc != 0 && tgt_to < tgt->used)
330 memmove ((char *) tgt->glyphs + tgt->glyph_size * (tgt_from + src_len),
331 (char *) tgt->glyphs + tgt->glyph_size * tgt_to,
332 tgt->glyph_size * (tgt->used - tgt_to));
334 memcpy ((char *) tgt->glyphs + tgt->glyph_size * tgt_from,
335 (char *) src->glyphs + src->glyph_size * src_from,
336 src->glyph_size * src_len);
345 -0x0F .. -2 : builtin commands
346 -0x100000F .. -0x10 : combining code
347 ... -0x1000010: index to FontLayoutStage->cmds
350 #define INVALID_CMD_ID -1
351 #define CMD_ID_OFFSET_BUILTIN -3
352 #define CMD_ID_OFFSET_COMBINING -0x10
353 #define CMD_ID_OFFSET_INDEX -0x1000010
355 /* Builtin commands. */
356 #define CMD_ID_COPY -3 /* '=' */
357 #define CMD_ID_REPEAT -4 /* '*' */
358 #define CMD_ID_CLUSTER_BEGIN -5 /* '<' */
359 #define CMD_ID_CLUSTER_END -6 /* '>' */
360 #define CMD_ID_SEPARATOR -7 /* '|' */
361 #define CMD_ID_LEFT_PADDING -8 /* '[' */
362 #define CMD_ID_RIGHT_PADDING -9 /* ']' */
364 #define CMD_ID_TO_COMBINING_CODE(id) (CMD_ID_OFFSET_COMBINING - (id))
365 #define COMBINING_CODE_TO_CMD_ID(code) (CMD_ID_OFFSET_COMBINING - (code))
367 #define CMD_ID_TO_INDEX(id) (CMD_ID_OFFSET_INDEX - (id))
368 #define INDEX_TO_CMD_ID(idx) (CMD_ID_OFFSET_INDEX - (idx))
370 static MSymbol Mcond, Mrange, Mfont_facility;
372 #define GLYPH_CODE_P(code) \
373 ((code) >= GLYPH_CODE_MIN && (code) <= GLYPH_CODE_MAX)
375 #define GLYPH_CODE_INDEX(code) ((code) - GLYPH_CODE_MIN)
377 #define UPDATE_CLUSTER_RANGE(ctx, g) \
379 if ((ctx)->cluster_begin_idx >= 0) \
381 if (ctx->cluster_begin_pos > (g)->from) \
382 ctx->cluster_begin_pos = (g)->from; \
383 if (ctx->cluster_end_pos < (g)->to) \
384 ctx->cluster_end_pos = (g)->to; \
388 enum FontLayoutCmdRuleSrcType
400 enum FontLayoutCmdRuleSrcType src_type;
415 MFLTOtfSpec otf_spec;
424 /* Beginning and end indices of series of SEQ commands. */
425 int seq_beg, seq_end;
426 /* Range of the first character appears in the above series. */
427 int seq_from, seq_to;
433 enum FontLayoutCmdType
435 FontLayoutCmdTypeRule,
436 FontLayoutCmdTypeCond,
437 FontLayoutCmdTypeOTF,
443 enum FontLayoutCmdType type;
445 FontLayoutCmdRule rule;
446 FontLayoutCmdCond cond;
453 MCharTable *category;
465 MCharTable *coverage;
469 /* Font layout table loader */
471 static int parse_otf_command (MSymbol symbol, MFLTOtfSpec *spec);
473 /* Load a category table from PLIST. PLIST has this form:
474 PLIST ::= ( FROM-CODE TO-CODE ? CATEGORY-CHAR ) *
478 load_category_table (MPlist *plist)
482 table = mchartable (Minteger, (void *) 0);
484 MPLIST_DO (plist, plist)
487 int from, to, category_code;
489 if (! MPLIST_PLIST (plist))
490 MERROR (MERROR_FONT, NULL);
491 elt = MPLIST_PLIST (plist);
492 if (! MPLIST_INTEGER_P (elt))
493 MERROR (MERROR_FONT, NULL);
494 from = MPLIST_INTEGER (elt);
495 elt = MPLIST_NEXT (elt);
496 if (! MPLIST_INTEGER_P (elt))
497 MERROR (MERROR_FONT, NULL);
498 to = MPLIST_INTEGER (elt);
499 elt = MPLIST_NEXT (elt);
500 if (MPLIST_TAIL_P (elt))
507 if (! MPLIST_INTEGER_P (elt))
508 MERROR (MERROR_FONT, NULL);
509 category_code = MPLIST_INTEGER (elt);
511 if (! isalnum (category_code))
512 MERROR (MERROR_FONT, NULL);
515 mchartable_set (table, from, (void *) category_code);
517 mchartable_set_range (table, from, to, (void *) category_code);
524 gen_otf_tag (char *p)
526 unsigned int tag = 0;
529 for (i = 0; i < 4 && *p; i++, p++)
530 tag = (tag << 8) | *p;
532 tag = (tag << 8) | 0x20;
537 otf_count_features (char *p, char *end, char stopper, int *count)
542 if (*p != stopper && *p != '\0')
549 if (*p == stopper || *p == '\0')
563 if (*p == stopper || *p == '\0')
575 otf_store_features (char *p, char *end, unsigned *buf)
580 for (i = 0; p < end;)
583 buf[i++] = 0xFFFFFFFF, p += 2, negative = 1;
587 buf[i++] = 0xFFFFFFFF;
588 buf[i++] = gen_otf_tag (p + 1), p += 6;
591 buf[i++] = gen_otf_tag (p), p += 5;
597 parse_otf_command (MSymbol symbol, MFLTOtfSpec *spec)
599 char *str = MSYMBOL_NAME (symbol);
600 char *end = str + MSYMBOL_NAMELEN (symbol);
601 unsigned int script, langsys;
603 int gsub_count = 0, gpos_count = 0;
606 memset (spec, 0, sizeof (MFLTOtfSpec));
609 str += 5; /* skip the heading ":otf=" */
610 script = gen_otf_tag (str);
614 langsys = gen_otf_tag (str);
621 /* Apply all GSUB features. */
626 str = otf_count_features (p, end, '+', &gsub_count);
628 MERROR (MERROR_FLT, -1);
632 /* Apply all GPOS features. */
637 str = otf_count_features (p, end, '\0', &gpos_count);
639 MERROR (MERROR_FLT, -1);
642 spec->script = script;
643 spec->langsys = langsys;
646 spec->features[0] = malloc (sizeof (int) * (gsub_count + 1));
647 if (! spec->features[0])
650 otf_store_features (gsub + 1, gpos, spec->features[0]);
652 spec->features[0][0] = 0xFFFFFFFF, spec->features[0][1] = 0;
656 spec->features[1] = malloc (sizeof (int) * (gpos_count + 1));
657 if (! spec->features[1])
659 if (spec->features[0])
660 free (spec->features[0]);
664 otf_store_features (gpos + 1, str, spec->features[1]);
666 spec->features[1][0] = 0xFFFFFFFF, spec->features[1][1] = 0;
672 /* Parse OTF command name NAME and store the result in CMD.
674 :SCRIPT[/[LANGSYS][=[GSUB-FEATURES][+GPOS-FEATURES]]]
675 where GSUB-FEATURES and GPOS-FEATURES have this form:
676 [FEATURE[,FEATURE]*] | ' ' */
679 load_otf_command (FontLayoutCmd *cmd, MSymbol sym)
681 char *name = MSYMBOL_NAME (sym);
686 /* This is old format of "otf:...". Change it to ":otf=...". */
687 char *str = alloca (MSYMBOL_NAMELEN (sym) + 2);
689 sprintf (str, ":otf=");
690 strcat (str, name + 4);
694 result = parse_otf_command (sym, &cmd->body.otf);
697 cmd->type = FontLayoutCmdTypeOTF;
702 /* Read a decimal number from STR preceded by one of "+-><". '+' and
703 '>' means a plus sign, '-' and '<' means a minus sign. If the
704 number is greater than 127, limit it to 127. */
707 read_decimal_number (char **str)
710 int sign = (*p == '-' || *p == '<') ? -1 : 1;
714 while (*p >= '0' && *p <= '9')
715 n = n * 10 + *p++ - '0';
719 return (n < 127 ? n * sign : 127 * sign);
723 /* Read a horizontal and vertical combining positions from STR, and
724 store them in the place pointed by X and Y. The horizontal
725 position left, center, and right are represented by 0, 1, and 2
726 respectively. The vertical position top, center, bottom, and base
727 are represented by 0, 1, 2, and 3 respectively. If successfully
728 read, return 0, else return -1. */
731 read_combining_position (char *str, int *x, int *y)
736 /* Vertical position comes first. */
737 for (i = 0; i < 4; i++)
746 /* Then comse horizontal position. */
747 for (i = 0; i < 3; i++)
757 /* Return a combining code corresponding to SYM. */
760 get_combining_command (MSymbol sym)
762 char *str = msymbol_name (sym);
763 int base_x, base_y, add_x, add_y, off_x, off_y;
766 if (read_combining_position (str, &base_x, &base_y) < 0)
777 if (c == '+' || c == '-')
779 off_y = read_decimal_number (&str) + 128;
784 if (c == '<' || c == '>')
785 off_x = read_decimal_number (&str) + 128;
789 if (read_combining_position (str, &add_x, &add_y) < 0)
792 c = MAKE_COMBINING_CODE (base_y, base_x, add_y, add_x, off_y, off_x);
793 return (COMBINING_CODE_TO_CMD_ID (c));
797 /* Load a command from PLIST into STAGE, and return that
798 identification number. If ID is not INVALID_CMD_ID, that means we
799 are loading a top level command or a macro. In that case, use ID
800 as the identification number of the command. Otherwise, generate a
801 new id number for the command. MACROS is a list of raw macros. */
804 load_command (FontLayoutStage *stage, MPlist *plist,
805 MPlist *macros, int id)
810 if (MPLIST_INTEGER_P (plist))
812 int code = MPLIST_INTEGER (plist);
815 MERROR (MERROR_DRAW, INVALID_CMD_ID);
818 else if (MPLIST_PLIST_P (plist))
820 /* PLIST ::= ( cond ... ) | ( STRING ... ) | ( INTEGER ... )
821 | ( ( INTEGER INTEGER ) ... )
822 | ( ( range INTEGER INTEGER ) ... )
823 | ( ( font-facilty [ INTEGER ] ) ... )
824 | ( ( font-facilty OTF-SPEC ) ... ) */
825 MPlist *elt = MPLIST_PLIST (plist);
826 int len = MPLIST_LENGTH (elt) - 1;
829 if (id == INVALID_CMD_ID)
832 id = INDEX_TO_CMD_ID (stage->used);
833 MLIST_APPEND1 (stage, cmds, dummy, MERROR_DRAW);
835 cmd = stage->cmds + CMD_ID_TO_INDEX (id);
837 if (MPLIST_SYMBOL_P (elt))
839 FontLayoutCmdCond *cond;
841 if (MPLIST_SYMBOL (elt) != Mcond)
842 MERROR (MERROR_DRAW, INVALID_CMD_ID);
843 elt = MPLIST_NEXT (elt);
844 cmd->type = FontLayoutCmdTypeCond;
845 cond = &cmd->body.cond;
846 cond->seq_beg = cond->seq_end = -1;
847 cond->seq_from = cond->seq_to = 0;
849 MTABLE_CALLOC (cond->cmd_ids, len, MERROR_DRAW);
850 for (i = 0; i < len; i++, elt = MPLIST_NEXT (elt))
852 int this_id = load_command (stage, elt, macros, INVALID_CMD_ID);
854 if (this_id == INVALID_CMD_ID || this_id == -2)
855 MERROR (MERROR_DRAW, this_id);
856 /* The above load_command may relocate stage->cmds. */
857 cmd = stage->cmds + CMD_ID_TO_INDEX (id);
858 cond = &cmd->body.cond;
859 cond->cmd_ids[i] = this_id;
860 if (this_id <= CMD_ID_OFFSET_INDEX)
862 FontLayoutCmd *this_cmd
863 = stage->cmds + CMD_ID_TO_INDEX (this_id);
865 if (this_cmd->type == FontLayoutCmdTypeRule
866 && this_cmd->body.rule.src_type == SRC_SEQ)
868 int first_char = this_cmd->body.rule.src.seq.codes[0];
870 if (cond->seq_beg < 0)
872 /* The first SEQ command. */
874 cond->seq_from = cond->seq_to = first_char;
876 else if (cond->seq_end < 0)
878 /* The following SEQ command. */
879 if (cond->seq_from > first_char)
880 cond->seq_from = first_char;
881 else if (cond->seq_to < first_char)
882 cond->seq_to = first_char;
887 if (cond->seq_beg >= 0 && cond->seq_end < 0)
888 /* The previous one is the last SEQ command. */
894 if (cond->seq_beg >= 0 && cond->seq_end < 0)
895 /* The previous one is the last SEQ command. */
899 if (cond->seq_beg >= 0 && cond->seq_end < 0)
900 /* The previous one is the last SEQ command. */
905 cmd->type = FontLayoutCmdTypeRule;
906 if (MPLIST_MTEXT_P (elt))
908 MText *mt = MPLIST_MTEXT (elt);
909 char *str = (char *) MTEXT_DATA (mt);
913 mtext_ins_char (mt, 0, '^', 1);
914 str = (char *) MTEXT_DATA (mt);
916 if (regcomp (&cmd->body.rule.src.re.preg, str, REG_EXTENDED))
917 MERROR (MERROR_FONT, INVALID_CMD_ID);
918 cmd->body.rule.src_type = SRC_REGEX;
919 cmd->body.rule.src.re.pattern = strdup (str);
921 else if (MPLIST_INTEGER_P (elt))
923 cmd->body.rule.src_type = SRC_INDEX;
924 cmd->body.rule.src.match_idx = MPLIST_INTEGER (elt);
926 else if (MPLIST_PLIST_P (elt))
928 MPlist *pl = MPLIST_PLIST (elt);
929 int size = MPLIST_LENGTH (pl);
931 if (MPLIST_INTEGER_P (pl))
935 cmd->body.rule.src_type = SRC_SEQ;
936 cmd->body.rule.src.seq.n_codes = size;
937 MTABLE_CALLOC (cmd->body.rule.src.seq.codes, size,
939 for (i = 0; i < size; i++, pl = MPLIST_NEXT (pl))
941 if (! MPLIST_INTEGER_P (pl))
942 MERROR (MERROR_DRAW, INVALID_CMD_ID);
943 cmd->body.rule.src.seq.codes[i]
944 = (unsigned) MPLIST_INTEGER (pl);
947 else if (MPLIST_SYMBOL_P (pl) && size == 3)
949 if (MPLIST_SYMBOL (pl) != Mrange)
950 MERROR (MERROR_FLT, INVALID_CMD_ID);
951 cmd->body.rule.src_type = SRC_RANGE;
952 pl = MPLIST_NEXT (pl);
953 if (! MPLIST_INTEGER_P (pl))
954 MERROR (MERROR_DRAW, INVALID_CMD_ID);
955 cmd->body.rule.src.range.from
956 = (unsigned) MPLIST_INTEGER (pl);
957 pl = MPLIST_NEXT (pl);
958 if (! MPLIST_INTEGER_P (pl))
959 MERROR (MERROR_DRAW, INVALID_CMD_ID);
960 cmd->body.rule.src.range.to
961 = (unsigned) MPLIST_INTEGER (pl);
963 else if (MPLIST_SYMBOL_P (pl) && size <= 2)
965 if (MPLIST_SYMBOL (pl) != Mfont_facility)
966 MERROR (MERROR_FLT, INVALID_CMD_ID);
967 pl = MPLIST_NEXT (pl);
968 if (MPLIST_SYMBOL_P (pl))
970 MSymbol sym = MPLIST_SYMBOL (pl);
971 char *otf_spec = MSYMBOL_NAME (sym);
973 if (otf_spec[0] == ':' && otf_spec[1] == 'o'
974 && otf_spec[2] == 't' && otf_spec[3] == 'f')
975 parse_otf_command (sym, &cmd->body.rule.src.otf_spec);
977 MERROR (MERROR_FLT, INVALID_CMD_ID);
978 cmd->body.rule.src_type = SRC_OTF_SPEC;
982 cmd->body.rule.src_type = SRC_HAS_GLYPH;
983 if (MPLIST_INTEGER_P (pl))
984 cmd->body.rule.src.supported_glyph
985 = MPLIST_INTEGER (pl);
987 cmd->body.rule.src.supported_glyph = -1;
991 MERROR (MERROR_DRAW, INVALID_CMD_ID);
994 MERROR (MERROR_DRAW, INVALID_CMD_ID);
996 elt = MPLIST_NEXT (elt);
997 cmd->body.rule.n_cmds = len;
998 MTABLE_CALLOC (cmd->body.rule.cmd_ids, len, MERROR_DRAW);
999 for (i = 0; i < len; i++, elt = MPLIST_NEXT (elt))
1001 int this_id = load_command (stage, elt, macros, INVALID_CMD_ID);
1003 if (this_id == INVALID_CMD_ID || this_id == -2)
1004 MERROR (MERROR_DRAW, this_id);
1005 /* The above load_command may relocate stage->cmds. */
1006 cmd = stage->cmds + CMD_ID_TO_INDEX (id);
1007 cmd->body.rule.cmd_ids[i] = this_id;
1011 else if (MPLIST_SYMBOL_P (plist))
1014 MSymbol sym = MPLIST_SYMBOL (plist);
1015 char *name = msymbol_name (sym);
1016 int len = strlen (name);
1020 && ((name[0] == 'o' && name[1] == 't'
1021 && name[2] == 'f' && name[3] == ':')
1022 || (name[0] == ':' && name[1] == 'o' && name[2] == 't'
1023 && name[3] == 'f' && name[4] == '=')))
1025 result = load_otf_command (&cmd, sym);
1028 if (id == INVALID_CMD_ID)
1030 id = INDEX_TO_CMD_ID (stage->used);
1031 MLIST_APPEND1 (stage, cmds, cmd, MERROR_DRAW);
1034 stage->cmds[CMD_ID_TO_INDEX (id)] = cmd;
1042 else if (*name == '*')
1043 return CMD_ID_REPEAT;
1044 else if (*name == '<')
1045 return CMD_ID_CLUSTER_BEGIN;
1046 else if (*name == '>')
1047 return CMD_ID_CLUSTER_END;
1048 else if (*name == '|')
1049 return CMD_ID_SEPARATOR;
1050 else if (*name == '[')
1051 return CMD_ID_LEFT_PADDING;
1052 else if (*name == ']')
1053 return CMD_ID_RIGHT_PADDING;
1059 id = get_combining_command (sym);
1065 MPLIST_DO (elt, macros)
1067 if (sym == MPLIST_SYMBOL (MPLIST_PLIST (elt)))
1069 id = INDEX_TO_CMD_ID (i);
1070 if (stage->cmds[i].type == FontLayoutCmdTypeMAX)
1071 id = load_command (stage, MPLIST_NEXT (MPLIST_PLIST (elt)),
1077 MERROR (MERROR_DRAW, INVALID_CMD_ID);
1080 MERROR (MERROR_DRAW, INVALID_CMD_ID);
1086 free_flt_command (FontLayoutCmd *cmd)
1088 if (cmd->type == FontLayoutCmdTypeRule)
1090 FontLayoutCmdRule *rule = &cmd->body.rule;
1092 if (rule->src_type == SRC_REGEX)
1094 free (rule->src.re.pattern);
1095 regfree (&rule->src.re.preg);
1097 else if (rule->src_type == SRC_SEQ)
1098 free (rule->src.seq.codes);
1099 free (rule->cmd_ids);
1101 else if (cmd->type == FontLayoutCmdTypeCond)
1102 free (cmd->body.cond.cmd_ids);
1103 else if (cmd->type == FontLayoutCmdTypeOTF)
1105 if (cmd->body.otf.features[0])
1106 free (cmd->body.otf.features[0]);
1107 if (cmd->body.otf.features[1])
1108 free (cmd->body.otf.features[1]);
1112 /* Load a generator from PLIST into a newly allocated FontLayoutStage,
1113 and return it. PLIST has this form:
1114 PLIST ::= ( COMMAND ( CMD-NAME COMMAND ) * )
1117 static FontLayoutStage *
1118 load_generator (MPlist *plist)
1120 FontLayoutStage *stage;
1122 FontLayoutCmd dummy;
1125 MSTRUCT_CALLOC (stage, MERROR_DRAW);
1126 MLIST_INIT1 (stage, cmds, 32);
1127 dummy.type = FontLayoutCmdTypeMAX;
1128 MLIST_APPEND1 (stage, cmds, dummy, MERROR_FONT);
1129 MPLIST_DO (elt, MPLIST_NEXT (plist))
1131 if (! MPLIST_PLIST_P (elt))
1132 MERROR (MERROR_FONT, NULL);
1133 pl = MPLIST_PLIST (elt);
1134 if (! MPLIST_SYMBOL_P (pl))
1135 MERROR (MERROR_FONT, NULL);
1136 MLIST_APPEND1 (stage, cmds, dummy, MERROR_FONT);
1139 /* Load the first command from PLIST into STAGE->cmds[0]. Macros
1140 called in the first command are also loaded from MPLIST_NEXT
1141 (PLIST) into STAGE->cmds[n]. */
1142 result = load_command (stage, plist, MPLIST_NEXT (plist),
1143 INDEX_TO_CMD_ID (0));
1144 if (result == INVALID_CMD_ID || result == -2)
1146 MLIST_FREE1 (stage, cmds);
1155 /* Load stages of the font layout table FLT. */
1158 load_flt (MFLT *flt, MPlist *key_list)
1160 MPlist *top, *plist, *pl, *p;
1161 MCharTable *category = NULL;
1165 top = (MPlist *) mdatabase__load_for_keys (flt->mdb, key_list);
1167 top = (MPlist *) mdatabase_load (flt->mdb);
1170 if (! MPLIST_PLIST_P (top))
1172 M17N_OBJECT_UNREF (top);
1173 MERROR (MERROR_FLT, -1);
1178 plist = mdatabase__props (flt->mdb);
1180 MERROR (MERROR_FLT, -1);
1181 MPLIST_DO (plist, plist)
1182 if (MPLIST_PLIST_P (plist))
1184 pl = MPLIST_PLIST (plist);
1185 if (! MPLIST_SYMBOL_P (pl)
1186 || MPLIST_SYMBOL (pl) != Mfont)
1188 pl = MPLIST_NEXT (pl);
1189 if (! MPLIST_PLIST_P (pl))
1191 p = MPLIST_PLIST (pl);
1192 if (! MPLIST_SYMBOL_P (p))
1194 p = MPLIST_NEXT (p);
1195 if (! MPLIST_SYMBOL_P (p))
1197 flt->family = MPLIST_SYMBOL (p);
1198 MPLIST_DO (p, MPLIST_NEXT (p))
1199 if (MPLIST_SYMBOL_P (p))
1201 sym = MPLIST_SYMBOL (p);
1202 if (MSYMBOL_NAME (sym)[0] != ':')
1203 flt->registry = sym, sym = Mnil;
1209 char *otf_spec = MSYMBOL_NAME (sym);
1211 if (otf_spec[0] == ':' && otf_spec[1] == 'o'
1212 && otf_spec[2] == 't' && otf_spec[3] == 'f')
1213 parse_otf_command (sym, &flt->otf);
1218 MPLIST_DO (plist, top)
1220 if (MPLIST_SYMBOL_P (plist)
1221 && MPLIST_SYMBOL (plist) == Mend)
1223 mplist_set (plist, Mnil, NULL);
1226 if (! MPLIST_PLIST (plist))
1228 pl = MPLIST_PLIST (plist);
1229 if (! MPLIST_SYMBOL_P (pl))
1231 sym = MPLIST_SYMBOL (pl);
1232 pl = MPLIST_NEXT (pl);
1235 if (sym == Mcategory)
1238 M17N_OBJECT_UNREF (category);
1239 else if (flt->coverage)
1241 category = flt->coverage;
1244 category = load_category_table (pl);
1245 if (! flt->coverage)
1247 flt->coverage = category;
1248 M17N_OBJECT_REF (category);
1251 else if (sym == Mgenerator)
1253 FontLayoutStage *stage;
1257 stage = load_generator (pl);
1260 stage->category = category;
1261 M17N_OBJECT_REF (category);
1263 flt->stages = mplist ();
1264 mplist_add (flt->stages, Mt, stage);
1268 M17N_OBJECT_UNREF (category);
1269 if (! MPLIST_TAIL_P (plist))
1271 M17N_OBJECT_UNREF (top);
1272 M17N_OBJECT_UNREF (flt->stages);
1273 MERROR (MERROR_FLT, -1);
1275 M17N_OBJECT_UNREF (top);
1281 free_flt_stage (FontLayoutStage *stage)
1285 M17N_OBJECT_UNREF (stage->category);
1286 for (i = 0; i < stage->used; i++)
1287 free_flt_command (stage->cmds + i);
1288 MLIST_FREE1 (stage, cmds);
1299 MPLIST_DO (plist, flt_list)
1301 MFLT *flt = MPLIST_VAL (plist);
1304 M17N_OBJECT_UNREF (flt->coverage);
1307 MPLIST_DO (pl, MPLIST_NEXT (flt->stages))
1308 free_flt_stage (MPLIST_VAL (pl));
1309 M17N_OBJECT_UNREF (flt->stages);
1312 M17N_OBJECT_UNREF (flt_list);
1319 MPlist *plist, *key_list = NULL;
1323 if (! (plist = mdatabase_list (Mfont, Mlayouter, Mnil, Mnil)))
1325 if (! (flt_list = mplist ()))
1327 if (! (key_list = mplist ()))
1329 if (! mplist_add (key_list, Mcategory, Mt))
1332 MPLIST_DO (pl, plist)
1334 MDatabase *mdb = MPLIST_VAL (pl);
1335 MSymbol *tags = mdatabase_tag (mdb);
1338 if (! MSTRUCT_CALLOC_SAFE (flt))
1340 flt->name = tags[2];
1342 if (load_flt (flt, key_list) < 0)
1346 if (MPLIST_TAIL_P (flt_list))
1348 flt_min_coverage = mchartable_min_char (flt->coverage);
1349 flt_max_coverage = mchartable_max_char (flt->coverage);
1355 c = mchartable_min_char (flt->coverage);
1356 if (flt_min_coverage > c)
1357 flt_min_coverage = c;
1358 c = mchartable_max_char (flt->coverage);
1359 if (flt_max_coverage < c)
1360 flt_max_coverage = c;
1362 if (! mplist_push (flt_list, flt->name, flt))
1372 M17N_OBJECT_UNREF (plist);
1373 M17N_OBJECT_UNREF (key_list);
1377 /* FLS (Font Layout Service) */
1379 /* Structure to hold information about a context of FLS. */
1383 /* Pointer to the current stage. */
1384 FontLayoutStage *stage;
1386 /* Pointer to the font. */
1389 /* Input and output glyph string. */
1390 MFLTGlyphString *in, *out;
1392 /* Encode each character or code of a glyph by the current category
1393 table into this array. An element is a category letter used for
1394 a regular expression matching. */
1399 int cluster_begin_idx;
1400 int cluster_begin_pos;
1401 int cluster_end_pos;
1405 } FontLayoutContext;
1407 static int run_command (int, int, int, int, FontLayoutContext *);
1412 run_rule (int depth,
1413 FontLayoutCmdRule *rule, int from, int to, FontLayoutContext *ctx)
1415 int *saved_match_indices = ctx->match_indices;
1416 int match_indices[NMATCH * 2];
1419 int orig_from = from;
1421 if (rule->src_type == SRC_SEQ)
1425 len = rule->src.seq.n_codes;
1426 if (len > (to - from))
1428 for (i = 0; i < len; i++)
1429 if (rule->src.seq.codes[i] != GREF (ctx->in, from + i)->code)
1434 if (MDEBUG_FLAG () > 2)
1435 MDEBUG_PRINT3 ("\n [FLT] %*s(SEQ 0x%X", depth, "",
1436 rule->src.seq.codes[0]);
1438 else if (rule->src_type == SRC_RANGE)
1444 head = GREF (ctx->in, from)->code;
1445 if (head < rule->src.range.from || head > rule->src.range.to)
1447 ctx->code_offset = head - rule->src.range.from;
1449 if (MDEBUG_FLAG () > 2)
1450 MDEBUG_PRINT4 ("\n [FLT] %*s(RANGE 0x%X-0x%X", depth, "",
1451 rule->src.range.from, rule->src.range.to);
1453 else if (rule->src_type == SRC_REGEX)
1455 regmatch_t pmatch[NMATCH];
1461 saved_code = ctx->encoded[to - ctx->encoded_offset];
1462 ctx->encoded[to - ctx->encoded_offset] = '\0';
1463 result = regexec (&(rule->src.re.preg),
1464 ctx->encoded + (from - ctx->encoded_offset),
1466 if (result == 0 && pmatch[0].rm_so == 0)
1468 if (MDEBUG_FLAG () > 2)
1469 MDEBUG_PRINT5 ("\n [FLT] %*s(REGEX \"%s\" \"%s\" %d", depth, "",
1470 rule->src.re.pattern,
1471 ctx->encoded + (from - ctx->encoded_offset),
1473 ctx->encoded[to - ctx->encoded_offset] = saved_code;
1474 for (i = 0; i < NMATCH; i++)
1476 if (pmatch[i].rm_so < 0)
1477 match_indices[i * 2] = match_indices[i * 2 + 1] = -1;
1480 match_indices[i * 2] = from + pmatch[i].rm_so;
1481 match_indices[i * 2 + 1] = from + pmatch[i].rm_eo;
1484 ctx->match_indices = match_indices;
1485 to = match_indices[1];
1489 ctx->encoded[to - ctx->encoded_offset] = saved_code;
1493 else if (rule->src_type == SRC_INDEX)
1495 if (rule->src.match_idx >= NMATCH)
1497 from = ctx->match_indices[rule->src.match_idx * 2];
1500 to = ctx->match_indices[rule->src.match_idx * 2 + 1];
1501 if (MDEBUG_FLAG () > 2)
1502 MDEBUG_PRINT3 ("\n [FLT] %*s(INDEX %d", depth, "", rule->src.match_idx);
1504 else if (rule->src_type == SRC_HAS_GLYPH)
1509 if (rule->src.supported_glyph < 0)
1513 code = GREF (ctx->in, from)->code;
1515 encoded = GREF (ctx->in, from)->encoded;
1519 code = rule->src.supported_glyph;
1525 static MFLTGlyphString gstring;
1527 if (! gstring.glyph_size)
1529 gstring.glyph_size = ctx->in->glyph_size;
1530 gstring.glyphs = calloc (1, gstring.glyph_size);
1531 gstring.allocated = 1;
1534 gstring.glyphs[0].code = code;
1535 if (ctx->font->get_glyph_id (ctx->font, &gstring, 0, 1) < 0
1536 || ! gstring.glyphs[0].encoded)
1540 else if (rule->src_type == SRC_OTF_SPEC)
1542 MFLTOtfSpec *spec = &rule->src.otf_spec;
1544 if (! ctx->font->check_otf)
1546 if ((spec->features[0] && spec->features[0][0] != 0xFFFFFFFF)
1547 || (spec->features[1] && spec->features[1][0] != 0xFFFFFFFF))
1550 else if (! ctx->font->check_otf (ctx->font, spec))
1556 for (i = 0; i < rule->n_cmds; i++)
1560 if (rule->cmd_ids[i] == CMD_ID_REPEAT)
1566 pos = run_command (depth, rule->cmd_ids[i], from, to, ctx);
1569 consumed = pos > from;
1574 ctx->match_indices = saved_match_indices;
1575 if (MDEBUG_FLAG () > 2)
1577 return (rule->src_type == SRC_INDEX ? orig_from : to);
1581 run_cond (int depth,
1582 FontLayoutCmdCond *cond, int from, int to, FontLayoutContext *ctx)
1586 if (MDEBUG_FLAG () > 2)
1587 MDEBUG_PRINT2 ("\n [FLT] %*s(COND", depth, "");
1589 for (i = 0; i < cond->n_cmds; i++)
1591 /* TODO: Write a code for optimization utilizaing the info
1593 if ((pos = run_command (depth, cond->cmd_ids[i], from, to, ctx))
1599 if (MDEBUG_FLAG () > 2)
1606 MFLTOtfSpec *otf_spec, int from, int to, FontLayoutContext *ctx)
1608 MFLTFont *font = ctx->font;
1609 int from_idx = ctx->out->used;
1611 if (MDEBUG_FLAG () > 2)
1612 MDEBUG_PRINT3 ("\n [FLT] %*s%s", depth, "", MSYMBOL_NAME (otf_spec->sym));
1614 font->get_glyph_id (font, ctx->in, from, to);
1615 if (! font->drive_otf)
1617 if (ctx->out->used + (to - from) > ctx->out->allocated)
1619 font->get_metrics (font, ctx->in, from, to);
1620 GCPY (ctx->in, from, to - from, ctx->out, ctx->out->used);
1621 ctx->out->used += to - from;
1625 MFLTGlyphAdjustment *adjustment;
1629 adjustment = alloca ((sizeof *adjustment)
1630 * (ctx->out->allocated - ctx->out->used));
1632 MERROR (MERROR_FLT, -1);
1633 memset (adjustment, 0,
1634 (sizeof *adjustment) * (ctx->out->allocated - ctx->out->used));
1635 to = font->drive_otf (font, otf_spec, ctx->in, from, to, ctx->out,
1639 out_len = ctx->out->used - from_idx;
1640 if (otf_spec->features[1])
1642 MFLTGlyphAdjustment *a;
1645 for (i = 0, a = adjustment; i < out_len; i++, a++)
1650 font->get_metrics (font, ctx->out, from_idx, ctx->out->used);
1651 for (g = GREF (ctx->out, from_idx + i);
1652 i < out_len; i++, a++, g = NEXT (ctx->out, g))
1655 if (a->advance_is_absolute)
1660 else if (a->xadv || a->yadv)
1665 if (a->xoff || a->yoff)
1668 MFLTGlyph *gg = PREV (ctx->out, g);
1669 MFLTGlyphAdjustment *aa = a;
1673 while (aa->back > 0)
1675 for (j = 0; j < aa->back;
1676 j++, gg = PREV (ctx->out, gg))
1677 g->xoff -= gg->xadv;
1679 g->xoff += aa->xoff;
1680 g->yoff += aa->yoff;
1689 if (ctx->cluster_begin_idx >= 0)
1690 for (; from_idx < ctx->out->used; from_idx++)
1692 MFLTGlyph *g = GREF (ctx->out, from_idx);
1693 UPDATE_CLUSTER_RANGE (ctx, g);
1698 static char work[16];
1701 dump_combining_code (int code)
1703 char *vallign = "tcbB";
1704 char *hallign = "lcr";
1710 work[0] = vallign[COMBINING_CODE_BASE_Y (code)];
1711 work[1] = hallign[COMBINING_CODE_BASE_X (code)];
1712 off_y = COMBINING_CODE_OFF_Y (code);
1713 off_x = COMBINING_CODE_OFF_X (code);
1715 sprintf (work + 2, "+%d", off_y);
1717 sprintf (work + 2, "%d", off_y);
1718 else if (off_x == 0)
1719 sprintf (work + 2, ".");
1720 p = work + strlen (work);
1722 sprintf (p, ">%d", off_x);
1724 sprintf (p, "<%d", -off_x);
1726 p[0] = vallign[COMBINING_CODE_ADD_Y (code)];
1727 p[1] = hallign[COMBINING_CODE_ADD_X (code)];
1733 run_command (int depth, int id, int from, int to, FontLayoutContext *ctx)
1741 /* Direct code (== ctx->code_offset + id) output.
1742 The source is not consumed. */
1743 if (MDEBUG_FLAG () > 2)
1744 MDEBUG_PRINT3 ("\n [FLT] %*s(DIRECT 0x%X", depth, "",
1745 ctx->code_offset + id);
1746 i = (from < to || from == 0) ? from : from - 1;
1748 g = GREF (ctx->out, ctx->out->used - 1);
1749 g->c = g->code = ctx->code_offset + id;
1751 SET_MEASURED (g, 0);
1752 if (ctx->combining_code)
1753 SET_COMBINING_CODE (g, ctx, ctx->combining_code);
1754 if (ctx->left_padding)
1755 SET_LEFT_PADDING (g, ctx, LeftPaddingMask);
1756 for (i = from; i < to; i++)
1758 MFLTGlyph *tmp = GREF (ctx->in, i);
1760 if (g->from > tmp->from)
1761 g->from = tmp->from;
1762 else if (g->to < tmp->to)
1765 UPDATE_CLUSTER_RANGE (ctx, g);
1766 ctx->code_offset = ctx->combining_code = ctx->left_padding = 0;
1767 if (MDEBUG_FLAG () > 2)
1772 if (id <= CMD_ID_OFFSET_INDEX)
1774 int idx = CMD_ID_TO_INDEX (id);
1777 if (idx >= ctx->stage->used)
1778 MERROR (MERROR_DRAW, -1);
1779 cmd = ctx->stage->cmds + idx;
1780 if (cmd->type == FontLayoutCmdTypeRule)
1781 to = run_rule (depth, &cmd->body.rule, from, to, ctx);
1782 else if (cmd->type == FontLayoutCmdTypeCond)
1783 to = run_cond (depth, &cmd->body.cond, from, to, ctx);
1784 else if (cmd->type == FontLayoutCmdTypeOTF)
1785 to = run_otf (depth, &cmd->body.otf, from, to, ctx);
1789 if (id <= CMD_ID_OFFSET_COMBINING)
1791 ctx->combining_code = CMD_ID_TO_COMBINING_CODE (id);
1792 if (MDEBUG_FLAG () > 2)
1793 MDEBUG_PRINT3 ("\n [FLT] %*s(CMB %s)", depth, "",
1794 dump_combining_code (ctx->combining_code));
1805 g = GREF (ctx->out, ctx->out->used - 1);
1806 if (ctx->combining_code)
1807 SET_COMBINING_CODE (g, ctx, ctx->combining_code);
1808 if (ctx->left_padding)
1809 SET_LEFT_PADDING (g, ctx, LeftPaddingMask);
1810 UPDATE_CLUSTER_RANGE (ctx, g);
1811 if (MDEBUG_FLAG () > 2)
1814 MDEBUG_PRINT2 ("\n [FLT] %*s(COPY |)", depth, "");
1816 MDEBUG_PRINT3 ("\n [FLT] %*s(COPY 0x%X)", depth, "", g->code);
1818 ctx->code_offset = ctx->combining_code = ctx->left_padding = 0;
1822 case CMD_ID_CLUSTER_BEGIN:
1823 if (ctx->cluster_begin_idx < 0)
1825 if (MDEBUG_FLAG () > 2)
1826 MDEBUG_PRINT3 ("\n [FLT] %*s<%d", depth, "",
1827 GREF (ctx->in, from)->from);
1828 ctx->cluster_begin_idx = ctx->out->used;
1829 ctx->cluster_begin_pos = GREF (ctx->in, from)->from;
1830 ctx->cluster_end_pos = GREF (ctx->in, from)->to;
1834 case CMD_ID_CLUSTER_END:
1835 if (ctx->cluster_begin_idx >= 0
1836 && ctx->cluster_begin_idx < ctx->out->used)
1840 if (MDEBUG_FLAG () > 2)
1841 MDEBUG_PRINT1 (" %d>", ctx->cluster_end_pos + 1);
1842 for (i = ctx->cluster_begin_idx; i < ctx->out->used; i++)
1844 GREF (ctx->out, i)->from = ctx->cluster_begin_pos;
1845 GREF (ctx->out, i)->to = ctx->cluster_end_pos;
1847 ctx->cluster_begin_idx = -1;
1851 case CMD_ID_SEPARATOR:
1855 i = from < to ? from : from - 1;
1857 g = GREF (ctx->out, ctx->out->used - 1);
1858 g->c = -1, g->code = 0;
1859 g->xadv = g->yadv = 0;
1861 SET_MEASURED (g, 0);
1865 case CMD_ID_LEFT_PADDING:
1866 if (MDEBUG_FLAG () > 2)
1867 MDEBUG_PRINT2 ("\n [FLT] %*s[", depth, "");
1868 ctx->left_padding = 1;
1871 case CMD_ID_RIGHT_PADDING:
1872 if (ctx->out->used > 0)
1874 if (MDEBUG_FLAG () > 2)
1875 MDEBUG_PRINT2 ("\n [FLT] %*s]", depth, "");
1876 g = GREF (ctx->out, ctx->out->used - 1);
1877 SET_RIGHT_PADDING (g, ctx, RightPaddingMask);
1882 MERROR (MERROR_DRAW, -1);
1886 run_stages (MFLTGlyphString *gstring, int from, int to,
1887 MFLT *flt, FontLayoutContext *ctx)
1889 MFLTGlyphString buf, *temp;
1891 int orig_from = from, orig_to = to;
1892 int from_pos, to_pos, len;
1895 MPlist *stages = flt->stages;
1897 from_pos = GREF (ctx->in, from)->from;
1898 to_pos = GREF (ctx->in, to - 1)->to;
1899 len = to_pos - from_pos;
1903 GINIT (ctx->out, ctx->out->allocated);
1904 ctx->encoded = alloca (ctx->out->allocated);
1905 if (! ctx->out->glyphs || ! ctx->encoded)
1908 for (stage_idx = 0; 1; stage_idx++)
1913 ctx->stage = (FontLayoutStage *) MPLIST_VAL (stages);
1914 table = ctx->stage->category;
1915 ctx->code_offset = ctx->combining_code = ctx->left_padding = 0;
1916 ctx->encoded_offset = from;
1917 for (i = from; i < to; i++)
1919 MFLTGlyph *g = GREF (ctx->in, i);
1920 char enc = (GET_ENCODED (g)
1921 ? (g->c > 0 ? (int) mchartable_lookup (table, g->c) : 1)
1923 ? (int) mchartable_lookup (table, g->code)
1926 ctx->encoded[i - from] = enc;
1927 if (! enc && stage_idx == 0)
1933 ctx->encoded[i - from] = '\0';
1934 ctx->match_indices[0] = from;
1935 ctx->match_indices[1] = to;
1936 for (i = 2; i < NMATCH; i++)
1937 ctx->match_indices[i] = -1;
1939 if (MDEBUG_FLAG () > 2)
1941 MDEBUG_PRINT2 ("\n [FLT] (STAGE %d \"%s\"", stage_idx,
1943 MDEBUG_PRINT (" (");
1944 for (i = from; i < to; i++)
1946 g = GREF (ctx->in, i);
1948 MDEBUG_PRINT2 ("%*s|", (i > 0), "");
1950 MDEBUG_PRINT3 ("%*s%04X", (i > 0), "", GREF (ctx->in, i)->code);
1954 result = run_command (4, INDEX_TO_CMD_ID (0), from, to, ctx);
1955 if (MDEBUG_FLAG () > 2)
1960 stages = MPLIST_NEXT (stages);
1961 /* If this is the last stage, break the loop. */
1962 if (MPLIST_TAIL_P (stages))
1965 /* Otherwise, prepare for the next stage. */
1972 GINIT (&buf, ctx->out->allocated);
1981 if (ctx->out->used > 0)
1984 int x_ppem = ctx->font->x_ppem << 6, y_ppem = ctx->font->y_ppem << 6;
1986 /* Remove separator glyphs. */
1987 for (i = 0; i < ctx->out->used;)
1989 g = GREF (ctx->out, i);
1991 GREPLACE (NULL, 0, 0, ctx->out, i, i + 1);
1996 /* Get actual glyph IDs of glyphs. */
1997 ctx->font->get_glyph_id (ctx->font, ctx->out, 0, ctx->out->used);
1999 /* Check if all characters in the range are covered by some
2000 glyph(s). If not, change <from> and <to> of glyphs to cover
2001 uncovered characters. */
2002 g_indices = alloca (sizeof (int) * len);
2005 for (i = 0; i < len; i++) g_indices[i] = -1;
2006 for (i = 0; i < ctx->out->used; i++)
2010 g = GREF (ctx->out, i);
2011 for (pos = g->from; pos <= g->to; pos++)
2012 if (g_indices[pos - orig_from] < 0)
2013 g_indices[pos - orig_from] = i;
2015 for (i = 0; i < len; i++)
2016 if (g_indices[i] < 0)
2022 for (i++; i < len && g_indices[i] < 0; i++);
2024 g = GREF (ctx->out, j);
2025 this_from = g->from;
2027 g->from = orig_from + i;
2028 } while (++j < ctx->out->used
2029 && (g = GREF (ctx->out, j))
2030 && g->from == this_from);
2036 j = g_indices[i - 1];
2037 g = GREF (ctx->out, j);
2040 g->to = orig_from + i + 1;
2042 && (g = GREF (ctx->out, j))
2043 && g->to == this_to);
2047 ctx->font->get_metrics (ctx->font, ctx->out, 0, ctx->out->used);
2049 /* Handle combining. */
2050 if (ctx->check_mask & CombiningCodeMask)
2052 MFLTGlyph *base = GREF (ctx->out, 0);
2053 int base_height = base->ascent + base->descent;
2056 for (i = 1; i < ctx->out->used; i++)
2058 if ((g = GREF (ctx->out, i))
2059 && (combining_code = GET_COMBINING_CODE (g)))
2061 int height = g->ascent + g->descent;
2062 int base_x, base_y, add_x, add_y, off_x, off_y;
2064 if (base->from > g->from)
2065 base->from = g->from;
2066 else if (base->to < g->to)
2069 base_x = COMBINING_CODE_BASE_X (combining_code);
2070 base_y = COMBINING_CODE_BASE_Y (combining_code);
2071 add_x = COMBINING_CODE_ADD_X (combining_code);
2072 add_y = COMBINING_CODE_ADD_Y (combining_code);
2073 off_x = COMBINING_CODE_OFF_X (combining_code);
2074 off_y = COMBINING_CODE_OFF_Y (combining_code);
2076 g->xoff = ((base->xadv * base_x - g->xadv * add_x) / 2
2077 + x_ppem * off_x / 100 - base->xadv);
2079 g->yoff = base_height * base_y / 2 - base->ascent;
2083 g->yoff -= height * add_y / 2 - g->ascent;
2084 g->yoff -= y_ppem * off_y / 100;
2085 if (base->lbearing > base->xadv + g->lbearing + g->xoff)
2086 base->lbearing = base->xadv + g->lbearing + g->xoff;
2087 if (base->rbearing < base->xadv + g->xadv + g->xoff)
2088 base->rbearing = base->xadv + g->xadv + g->xoff;
2089 if (base->ascent < g->ascent - g->yoff)
2090 base->ascent = g->ascent - g->yoff;
2091 if (base->descent < g->descent - g->yoff)
2092 base->descent = g->descent - g->yoff;
2093 g->xadv = g->yadv = 0;
2094 if (GET_RIGHT_PADDING (g))
2095 SET_RIGHT_PADDING (base, ctx, RightPaddingMask);
2101 base_height = g->ascent + g->descent;
2106 /* Handle padding */
2107 if (ctx->check_mask & (LeftPaddingMask | RightPaddingMask))
2108 for (i = 0; i < ctx->out->used; i++)
2110 g = GREF (ctx->out, i);
2111 if (! GET_COMBINING_CODE (g))
2113 if (GET_RIGHT_PADDING (g) && g->rbearing > g->xadv)
2115 g->xadv = g->rbearing;
2118 if (GET_LEFT_PADDING (g) && g->lbearing < 0)
2120 g->xoff += - g->lbearing;
2121 g->xadv += - g->lbearing;
2122 g->rbearing += - g->lbearing;
2130 GREPLACE (ctx->out, 0, ctx->out->used, gstring, orig_from, orig_to);
2131 to = orig_from + ctx->out->used;
2136 setup_combining_coverage (int from, int to, void *val, void *arg)
2138 int combining_class = (int) val;
2141 if (combining_class < 200)
2143 else if (combining_class <= 204)
2145 if ((combining_class % 2) == 0)
2146 category = "bcd"[(combining_class - 200) / 2];
2148 else if (combining_class <= 232)
2150 if ((combining_class % 2) == 0)
2151 category = "efghijklmnopq"[(combining_class - 208) / 2];
2153 else if (combining_class == 233)
2155 else if (combining_class == 234)
2157 else if (combining_class == 240)
2159 mchartable_set_range ((MCharTable *) arg, from, to, (void *) category);
2163 setup_combining_flt (MFLT *flt)
2166 MCharTable *combininig_class_table
2167 = mchar_get_prop_table (Mcombining_class, &type);
2169 mchartable_set_range (flt->coverage, 0, 0x10FFFF, (void *) 'u');
2170 if (combininig_class_table)
2171 mchartable_map (combininig_class_table, (void *) 0,
2172 setup_combining_coverage, flt->coverage);
2175 #define CHECK_FLT_STAGES(flt) ((flt)->stages || load_flt (flt, NULL) == 0)
2180 int m17n__flt_initialized;
2185 /* The following two are actually not exposed to a user but concealed
2186 by the macro M17N_INIT (). */
2189 m17n_init_flt (void)
2191 int mdebug_flag = MDEBUG_INIT;
2193 merror_code = MERROR_NONE;
2194 if (m17n__flt_initialized++)
2197 if (merror_code != MERROR_NONE)
2199 m17n__flt_initialized--;
2203 MDEBUG_PUSH_TIME ();
2205 Mcond = msymbol ("cond");
2206 Mrange = msymbol ("range");
2207 Mfont = msymbol ("font");
2208 Mlayouter = msymbol ("layouter");
2209 Mcombining = msymbol ("combining");
2210 Mfont_facility = msymbol ("font-facility");
2211 Mgenerator = msymbol ("generator");
2212 Mend = msymbol ("end");
2214 MDEBUG_PRINT_TIME ("INIT", (stderr, " to initialize the flt modules."));
2219 m17n_fini_flt (void)
2221 int mdebug_flag = MDEBUG_FINI;
2223 if (m17n__flt_initialized == 0
2224 || --m17n__flt_initialized > 0)
2227 MDEBUG_PUSH_TIME ();
2229 MDEBUG_PRINT_TIME ("FINI", (stderr, " to finalize the flt modules."));
2235 #endif /* !FOR_DOXYGEN || DOXYGEN_INTERNAL_MODULE */
2237 /*** @addtogroup m17nFLT */
2243 @brief Return an FLT object that has a specified name.
2245 The mflt_get () function returns an FLT object whose name is $NAME.
2248 If the operation was successful, mflt_get () returns a pointer
2249 to the found FLT object. Otherwise, it returns @c NULL. */
2252 @brief »ØÄꤵ¤ì¤¿Ì¾Á°¤ò»ý¤Ä FLT ¥ª¥Ö¥¸¥§¥¯¥È¤òÊÖ¤¹.
2254 ´Ø¿ô mflt_get () ¤Ï¡¢$NAME ¤È¤¤¤¦Ì¾Á°¤ò»ý¤Ä FLT ¥ª¥Ö¥¸¥§¥¯¥È¤òÊÖ¤¹¡£
2257 ¤â¤·À®¸ù¤¹¤ì¤Ð¡¢mflt_get () ¤Ï¸«¤Ä¤«¤Ã¤¿ FLT
2258 ¥ª¥Ö¥¸¥§¥¯¥È¤Ø¤Î¥Ý¥¤¥ó¥¿¤òÊÖ¤¹¡£¼ºÇÔ¤·¤¿¾ì¹ç¤Ï @c NULL ¤òÊÖ¤¹¡£ */
2261 mflt_get (MSymbol name)
2265 if (! flt_list && list_flt () < 0)
2267 flt = mplist_get (flt_list, name);
2268 if (! flt || ! CHECK_FLT_STAGES (flt))
2270 if (flt->name == Mcombining
2271 && ! mchartable_lookup (flt->coverage, 0))
2272 setup_combining_flt (flt);
2279 @brief Find an FLT suitable for the specified character and font.
2281 The mflt_find () function returns the most appropriate FLT for
2282 layouting character $C with font $FONT.
2285 If the operation was successful, mflt_find () returns a pointer
2286 to the found FLT object. Otherwise, it returns @c NULL. */
2289 @brief »ØÄꤵ¤ì¤¿Ê¸»ú¤È¥Õ¥©¥ó¥È¤Ë¹ç¤Ã¤¿ FLT ¤òõ¤¹.
2291 ´Ø¿ô mflt_find () ¤Ï¡¢Ê¸»ú $C ¤ò¥Õ¥©¥ó¥È $FONT
2292 ¤Ç¥ì¥¤¥¢¥¦¥È¤¹¤ë¤¿¤á¤ËºÇ¤âŬÀÚ¤Ê FLT ¤òÊÖ¤¹¡£
2295 ¤â¤·À®¸ù¤¹¤ì¤Ð¡¢mflt_find () ¤Ï¸«¤Ä¤«¤Ã¤¿ FLT
2296 ¥ª¥Ö¥¸¥§¥¯¥È¤Ø¤Î¥Ý¥¤¥ó¥¿¤òÊÖ¤¹¡£¼ºÇÔ¤·¤¿¾ì¹ç¤Ï @c NULL ¤òÊÖ¤¹¡£ */
2299 mflt_find (int c, MFLTFont *font)
2303 static MSymbol unicode_bmp = NULL, unicode_full = NULL;
2307 unicode_bmp = msymbol ("unicode-bmp");
2308 unicode_full = msymbol ("unicode-full");
2311 if (! flt_list && list_flt () < 0)
2317 MPLIST_DO (plist, flt_list)
2319 flt = MPLIST_VAL (plist);
2320 if (flt->registry != unicode_bmp
2321 && flt->registry != unicode_full)
2323 if (flt->family && flt->family != font->family)
2326 && ! mchartable_lookup (flt->coverage, c))
2330 MFLTOtfSpec *spec = &flt->otf;
2332 if (! font->check_otf)
2334 if ((spec->features[0] && spec->features[0][0] != 0xFFFFFFFF)
2335 || (spec->features[1] && spec->features[1][0] != 0xFFFFFFFF))
2338 else if (! font->check_otf (font, spec))
2348 MPLIST_DO (plist, flt_list)
2350 flt = MPLIST_VAL (plist);
2351 if (mchartable_lookup (flt->coverage, c))
2360 @brief Return the name of an FLT.
2362 The mflt_name () function returns the name of $FLT. */
2365 @brief FLT ¤Î̾Á°¤òÊÖ¤¹.
2367 ´Ø¿ô mflt_name () ¤Ï $FLT ¤Î̾Á°¤òÊÖ¤¹¡£ */
2370 mflt_name (MFLT *flt)
2372 return MSYMBOL_NAME (flt->name);
2377 @brief Return a coverage of a FLT.
2379 The mflt_coverage () function returns a char-table that contains
2380 nonzero values for characters supported by $FLT. */
2383 @brief FLT ¤ÎÈϰϤòÊÖ¤¹.
2385 ´Ø¿ô mflt_coverage () ¤Ï¡¢$FLT ¤¬¥µ¥Ý¡¼¥È¤¹¤ëʸ»ú¤ËÂФ·¤Æ
2386 0 ¤Ç¤Ê¤¤Ãͤò´Þ¤àʸ»ú¥Æ¡¼¥Ö¥ë¤òÊÖ¤¹¡£ */
2389 mflt_coverage (MFLT *flt)
2391 return flt->coverage;
2396 @brief Layout characters with an FLT.
2398 The mflt_run () function layouts characters in $GSTRING between
2399 $FROM (inclusive) and $TO (exclusive) with $FONT. If $FLT is
2400 nonzero, it is used for all the charaters. Otherwise, appropriate
2401 FLTs are automatically chosen.
2404 The operation was successful. The value is the index to the
2405 glyph, which was previously indexed by $TO, in $GSTRING->glyphs.
2408 $GSTRING->glyphs is too short to store the result. The caller can
2409 call this fucntion again with a longer $GSTRING->glyphs.
2412 Some other error occurred. */
2415 @brief FLT ¤ò»È¤Ã¤Æʸ»ú¤ò¥ì¥¤¥¢¥¦¥È¤¹¤ë.
2417 ´Ø¿ô mflt_run () ¤Ï¡¢$GSTRING Ãæ¤Î $FROM ¤«¤é $TO ľÁ°¤Þ¤Ç¤Îʸ»ú¤ò
2418 $FONT ¤òÍѤ¤¤Æ¥ì¥¤¥¢¥¦¥È¤¹¤ë¡£¤â¤· $FLT
2419 ¤¬¥¼¥í¤Ç¤Ê¤±¤ì¤Ð¡¢¤½¤ÎÃͤò¤¹¤Ù¤Æ¤Îʸ»ú¤ËÂФ·¤ÆÍѤ¤¤ë¡£
2420 ¤½¤¦¤Ç¤Ê¤±¤ì¤ÐŬÀÚ¤Ê FLT ¤ò¼«Æ°Åª¤ËÁªÂò¤¹¤ë¡£
2423 ¼Â¹ÔÀ®¸ù¤ò¼¨¤¹¡£ÊÖ¤µ¤ì¤ëÃͤϡ¢$GSTRING->glyphs Ãæ¤Ç°ÊÁ° $TO
2424 ¤Ë¤è¤Ã¤Æ¼¨¤µ¤ì¤Æ¤¤¤¿¥°¥ê¥Õ¤Ø¤Î¥¤¥ó¥Ç¥¯¥¹¤Ç¤¢¤ë¡£
2427 ·ë²Ì¤ò³ÊǼ¤¹¤ë¤Ë¤Ï $GSTRING->glyphs ¤¬Ã»¤¹¤®¤ë¤³¤È¤ò¼¨¤¹¡£
2428 ¸Æ¤Ó½Ð¤·Â¦¤Ï¡¢¤è¤êŤ¤ $GSTRING->glyphs
2429 ¤òÍѤ¤¤ÆºÆÅÙ¤³¤Î´Ø¿ô¤ò¸Æ¤Ö¤³¤È¤¬¤Ç¤¤ë¡£
2432 ¤½¤Î¾¤Î¥¨¥é¡¼¤¬µ¯¤¤¿¤³¤È¤ò¼¨¤¹¡£ */
2435 mflt_run (MFLTGlyphString *gstring, int from, int to,
2436 MFLTFont *font, MFLT *flt)
2438 FontLayoutContext ctx;
2439 int match_indices[NMATCH];
2441 MFLTGlyphString out;
2442 int auto_flt = ! flt;
2444 int this_from, this_to;
2448 /* This is usually sufficient, but if not, we retry with the larger
2449 values at most 3 times. This value is also used for the
2450 allocating size of ctx.encoded. */
2451 out.allocated = (to - from) * 4;
2453 for (i = from; i < to; i++)
2455 g = GREF (gstring, i);
2457 memset (g, 0, sizeof (MFLTGlyph));
2459 g->from = g->to = i;
2462 for (this_from = from; this_from < to;)
2466 for (this_to = this_from; this_to < to; this_to++)
2467 if (mchartable_lookup (flt->coverage, GREF (gstring, this_to)->c))
2472 if (! flt_list && list_flt () < 0)
2474 font->get_glyph_id (font, gstring, this_from, to);
2475 font->get_metrics (font, gstring, this_from, to);
2479 for (this_to = this_from; this_to < to; this_to++)
2481 c = GREF (gstring, this_to)->c;
2482 if (c >= flt_min_coverage && c <= flt_max_coverage)
2485 for (; this_to < to; this_to++)
2487 c = GREF (gstring, this_to)->c;
2489 && mchartable_lookup (((MFLT *) font->internal)->coverage, c))
2491 flt = font->internal;
2494 flt = mflt_find (c, font);
2497 if (CHECK_FLT_STAGES (flt))
2499 font->internal = flt;
2506 if (this_from < this_to)
2508 font->get_glyph_id (font, gstring, this_from, this_to);
2509 font->get_metrics (font, gstring, this_from, this_to);
2510 this_from = this_to;
2515 MDEBUG_PRINT1 (" [FLT] (%s", MSYMBOL_NAME (flt->name));
2517 for (; this_to < to; this_to++)
2518 if (! mchartable_lookup (flt->coverage, GREF (gstring, this_to)->c))
2524 MDEBUG_PRINT1 (" (%s)", MSYMBOL_NAME (font->family));
2525 MDEBUG_PRINT ("\n [FLT] (SOURCE");
2526 for (i = this_from, j = 0; i < this_to; i++, j++)
2528 if (j > 0 && j % 8 == 0)
2529 MDEBUG_PRINT ("\n [FLT] ");
2530 MDEBUG_PRINT1 (" %04X", GREF (gstring, i)->c);
2535 for (i = 0; i < 3; i++)
2538 memset (&ctx, 0, sizeof ctx);
2539 ctx.match_indices = match_indices;
2541 ctx.cluster_begin_idx = -1;
2544 j = run_stages (gstring, this_from, this_to, flt, &ctx);
2558 MDEBUG_PRINT ("\n [FLT] (RESULT");
2559 if (MDEBUG_FLAG () > 1)
2560 for (i = 0; this_from < this_to; this_from++, i++)
2562 if (i > 0 && i % 4 == 0)
2563 MDEBUG_PRINT ("\n [FLT] ");
2564 g = GREF (gstring, this_from);
2565 MDEBUG_PRINT4 (" (%04X %d %d %d)",
2566 g->code, g->xadv, g->xoff, g->yoff);
2569 for (; this_from < this_to; this_from++)
2570 MDEBUG_PRINT1 (" %04X", GREF (gstring, this_from)->code);
2571 MDEBUG_PRINT ("))\n");
2573 this_from = this_to;
2578 int len = to - from;
2581 memcpy (((char *) out.glyphs),
2582 ((char *) gstring->glyphs) + gstring->glyph_size * from,
2583 gstring->glyph_size * len);
2584 for (i = from, j = to; i < to;)
2586 for (k = i + 1, j--; k < to && GREF (&out, k)->xadv == 0;
2588 GCPY (&out, i, (k - i), gstring, j);
2597 /* for debugging... */
2600 dump_flt_cmd (FontLayoutStage *stage, int id, int indent)
2602 char *prefix = (char *) alloca (indent + 1);
2604 memset (prefix, 32, indent);
2608 fprintf (stderr, "0x%02X", id);
2609 else if (id <= CMD_ID_OFFSET_INDEX)
2611 int idx = CMD_ID_TO_INDEX (id);
2612 FontLayoutCmd *cmd = stage->cmds + idx;
2614 if (cmd->type == FontLayoutCmdTypeRule)
2616 FontLayoutCmdRule *rule = &cmd->body.rule;
2619 fprintf (stderr, "(rule ");
2620 if (rule->src_type == SRC_REGEX)
2621 fprintf (stderr, "\"%s\"", rule->src.re.pattern);
2622 else if (rule->src_type == SRC_INDEX)
2623 fprintf (stderr, "%d", rule->src.match_idx);
2624 else if (rule->src_type == SRC_SEQ)
2625 fprintf (stderr, "(seq)");
2626 else if (rule->src_type == SRC_RANGE)
2627 fprintf (stderr, "(range)");
2629 fprintf (stderr, "(invalid src)");
2631 for (i = 0; i < rule->n_cmds; i++)
2633 fprintf (stderr, "\n%s ", prefix);
2634 dump_flt_cmd (stage, rule->cmd_ids[i], indent + 2);
2636 fprintf (stderr, ")");
2638 else if (cmd->type == FontLayoutCmdTypeCond)
2640 FontLayoutCmdCond *cond = &cmd->body.cond;
2643 fprintf (stderr, "(cond");
2644 for (i = 0; i < cond->n_cmds; i++)
2646 fprintf (stderr, "\n%s ", prefix);
2647 dump_flt_cmd (stage, cond->cmd_ids[i], indent + 2);
2649 fprintf (stderr, ")");
2651 else if (cmd->type == FontLayoutCmdTypeOTF)
2653 fprintf (stderr, "(otf)");
2656 fprintf (stderr, "(error-command)");
2658 else if (id <= CMD_ID_OFFSET_COMBINING)
2659 fprintf (stderr, "cominging-code");
2661 fprintf (stderr, "(predefiend %d)", id);
2665 mdebug_dump_flt (MFLT *flt, int indent)
2667 char *prefix = (char *) alloca (indent + 1);
2671 memset (prefix, 32, indent);
2673 fprintf (stderr, "(flt");
2674 MPLIST_DO (plist, flt->stages)
2676 FontLayoutStage *stage = (FontLayoutStage *) MPLIST_VAL (plist);
2679 fprintf (stderr, "\n%s (stage %d", prefix, stage_idx);
2680 for (i = 0; i < stage->used; i++)
2682 fprintf (stderr, "\n%s ", prefix);
2683 dump_flt_cmd (stage, INDEX_TO_CMD_ID (i), indent + 4);
2685 fprintf (stderr, ")");
2688 fprintf (stderr, ")");