summaryrefslogtreecommitdiff
path: root/dviware/catdvi/glyphops.c
blob: 57ee40f368e8592c04d6c3920d5523b3b508a837 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
/* catdvi - get text from DVI files
   Copyright (C) 2000, 2002 Bjoern Brill <brill@fs.math.uni-frankfurt.de>
 
   This program 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 2 of the License, or
   (at your option) any later version.
 
   This program 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 this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
 
#include "glyphops.h"
#include "sparse.h"
#include "glyphenm.h"

#define EOT 0x04    /* end-of-table mark */


/* known formatting hints */ 
struct glyph_hintentry_t {
    glyph_t glyph;
    enum glyph_hint_t hint;
};

static struct glyph_hintentry_t hints[] = {
    {GLYPH_asciicircum,    	    GH_DIACRITIC},
    {GLYPH_grave,	    	    GH_DIACRITIC},
    {GLYPH_asciitilde, 	    	    GH_DIACRITIC},

    {GLYPH_dieresis,     	    GH_DIACRITIC},
    {GLYPH_UNI_macron,	    	    GH_DIACRITIC},
    {GLYPH_acute, 	    	    GH_DIACRITIC},
    {GLYPH_cedilla,	    	    GH_DIACRITIC},

    {GLYPH_circumflex,	    	    GH_DIACRITIC},
    {GLYPH_caron, 	    	    GH_DIACRITIC},
    {GLYPH_UNI_macronmodifier,	    GH_DIACRITIC},
    {GLYPH_UNI_acutemodifier,	    GH_DIACRITIC},
    {GLYPH_UNI_gravemodifier,	    GH_DIACRITIC},
    {GLYPH_breve,   	    	    GH_DIACRITIC},
    {GLYPH_dotaccent,	    	    GH_DIACRITIC},
    {GLYPH_ring,    	    	    GH_DIACRITIC},
    {GLYPH_ogonek,	    	    GH_DIACRITIC},
    {GLYPH_tilde,     	    	    GH_DIACRITIC},
    {GLYPH_CATDVI_polishstroke,     GH_DIACRITIC},

    {GLYPH_CATDVI_negationslash,    GH_DIACRITIC},
    {GLYPH_UNI_circlelarge, 	    GH_DIACRITIC},
    {GLYPH_CATDVI_vector,   	    GH_DIACRITIC},
    
    {GLYPH_gravecomb,	    	    GH_COMBINING_DIACRITIC},
    {GLYPH_acutecomb,	    	    GH_COMBINING_DIACRITIC},
    {GLYPH_UNI_circumflexcomb,	    GH_COMBINING_DIACRITIC},
    {GLYPH_tildecomb, 	    	    GH_COMBINING_DIACRITIC},
    {GLYPH_UNI_macroncomb,          GH_COMBINING_DIACRITIC},
    {GLYPH_UNI_overlinecomb,        GH_COMBINING_DIACRITIC},
    {GLYPH_UNI_brevecomb, 	    GH_COMBINING_DIACRITIC},
    {GLYPH_UNI_dotaccentcomb,       GH_COMBINING_DIACRITIC},
    {GLYPH_UNI_dieresiscomb,   	    GH_COMBINING_DIACRITIC},
    {GLYPH_hookabovecomb,  	    GH_COMBINING_DIACRITIC},
    {GLYPH_UNI_ringcomb,    	    GH_COMBINING_DIACRITIC},
    {GLYPH_UNI_caroncomb,   	    GH_COMBINING_DIACRITIC},
    {GLYPH_UNI_cedillacomb,  	    GH_COMBINING_DIACRITIC},
    {GLYPH_UNI_ogonekcomb,  	    GH_COMBINING_DIACRITIC},
    {GLYPH_CATDVI_polishstrokecomb, GH_COMBINING_DIACRITIC},

    {GLYPH_UNI_slashlongcomb,	    GH_COMBINING_DIACRITIC},
    {GLYPH_UNI_circlecomb,  	    GH_COMBINING_DIACRITIC},
    {GLYPH_UNI_vectorcomb,  	    GH_COMBINING_DIACRITIC},

    {GLYPH_ADOBE_periodsuperior,    GH_DIACRITIC},

    {GLYPH_CATDVI_Eurodblstroke,    GH_DIACRITIC},
    {GLYPH_CATDVI_Eurodblstrokecomb,    GH_COMBINING_DIACRITIC},

    {GLYPH_radical,	GH_RADICAL},
    	/* Is in the math symbols font but used just like the big
	 * variants in the math extension font.
	 */

    /* The TeX math extension stuff */
    {GLYPH_CATDVI_parenleftbig,	GH_ON_AXIS},
    {GLYPH_CATDVI_parenrightbig,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_bracketleftbig,	GH_ON_AXIS},
    {GLYPH_CATDVI_bracketrightbig,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_floorleftbig,	GH_ON_AXIS},
    {GLYPH_CATDVI_floorrightbig,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_ceilingleftbig,	GH_ON_AXIS},
    {GLYPH_CATDVI_ceilingrightbig,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_braceleftbig,	GH_ON_AXIS},
    {GLYPH_CATDVI_bracerightbig,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_angbracketleftbig,	GH_ON_AXIS},
    {GLYPH_CATDVI_angbracketrightbig,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_vextendsingle,	GH_EXTENSIBLE_RECIPE},
    {GLYPH_CATDVI_vextenddouble,	GH_EXTENSIBLE_RECIPE},
    {GLYPH_CATDVI_slashbig,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_backslashbig,	GH_ON_AXIS},
    {GLYPH_CATDVI_parenleftBig,	GH_ON_AXIS},
    {GLYPH_CATDVI_parenrightBig,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_parenleftbigg,	GH_ON_AXIS},
    {GLYPH_CATDVI_parenrightbigg,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_bracketleftbigg,	GH_ON_AXIS},
    {GLYPH_CATDVI_bracketrightbigg,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_floorleftbigg,	GH_ON_AXIS},
    {GLYPH_CATDVI_floorrightbigg,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_ceilingleftbigg,	GH_ON_AXIS},
    {GLYPH_CATDVI_ceilingrightbigg,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_braceleftbigg,	GH_ON_AXIS},
    {GLYPH_CATDVI_bracerightbigg,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_angbracketleftbigg,	GH_ON_AXIS},
    {GLYPH_CATDVI_angbracketrightbigg,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_slashbigg,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_backslashbigg,	GH_ON_AXIS},
    {GLYPH_CATDVI_parenleftBigg,	GH_ON_AXIS},
    {GLYPH_CATDVI_parenrightBigg,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_bracketleftBigg,	GH_ON_AXIS},
    {GLYPH_CATDVI_bracketrightBigg,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_floorleftBigg,	GH_ON_AXIS},
    {GLYPH_CATDVI_floorrightBigg,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_ceilingleftBigg,	GH_ON_AXIS},
    {GLYPH_CATDVI_ceilingrightBigg,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_braceleftBigg,	GH_ON_AXIS},
    {GLYPH_CATDVI_bracerightBigg,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_angbracketleftBigg,	GH_ON_AXIS},
    {GLYPH_CATDVI_angbracketrightBigg,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_slashBigg,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_backslashBigg,	GH_ON_AXIS},
    {GLYPH_CATDVI_slashBig,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_backslashBig,	GH_ON_AXIS},
    {GLYPH_ADOBE_parenlefttp,	GH_EXTENSIBLE_RECIPE},
    {GLYPH_ADOBE_parenrighttp,	GH_EXTENSIBLE_RECIPE | GH_MOREMATH_LEFT},
    {GLYPH_ADOBE_bracketlefttp,	GH_EXTENSIBLE_RECIPE},
    {GLYPH_ADOBE_bracketrighttp,	GH_EXTENSIBLE_RECIPE | GH_MOREMATH_LEFT},
    {GLYPH_ADOBE_bracketleftbt,	GH_EXTENSIBLE_RECIPE},
    {GLYPH_ADOBE_bracketrightbt,	GH_EXTENSIBLE_RECIPE | GH_MOREMATH_LEFT},
    {GLYPH_ADOBE_bracketleftex,	GH_EXTENSIBLE_RECIPE},
    {GLYPH_ADOBE_bracketrightex,	GH_EXTENSIBLE_RECIPE | GH_MOREMATH_LEFT},
    {GLYPH_ADOBE_bracelefttp,	GH_EXTENSIBLE_RECIPE},
    {GLYPH_ADOBE_bracerighttp,	GH_EXTENSIBLE_RECIPE | GH_MOREMATH_LEFT},
    {GLYPH_ADOBE_braceleftbt,	GH_EXTENSIBLE_RECIPE},
    {GLYPH_ADOBE_bracerightbt,	GH_EXTENSIBLE_RECIPE | GH_MOREMATH_LEFT},
    {GLYPH_ADOBE_braceleftmid,	GH_EXTENSIBLE_RECIPE},
    {GLYPH_ADOBE_bracerightmid,	GH_EXTENSIBLE_RECIPE | GH_MOREMATH_LEFT},
    {GLYPH_ADOBE_braceex,	GH_EXTENSIBLE_RECIPE},
    {GLYPH_ADOBE_arrowvertex,	GH_EXTENSIBLE_RECIPE},
    {GLYPH_ADOBE_parenleftbt,	GH_EXTENSIBLE_RECIPE},
    {GLYPH_ADOBE_parenrightbt,	GH_EXTENSIBLE_RECIPE | GH_MOREMATH_LEFT},
    {GLYPH_ADOBE_parenleftex,	GH_EXTENSIBLE_RECIPE},
    {GLYPH_ADOBE_parenrightex,	GH_EXTENSIBLE_RECIPE | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_angbracketleftBig,	GH_ON_AXIS},
    {GLYPH_CATDVI_angbracketrightBig,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_unionsqtext,	GH_ON_AXIS},
    {GLYPH_CATDVI_unionsqdisplay,	GH_ON_AXIS},
    {GLYPH_CATDVI_contintegraltext,	GH_ON_AXIS},
    {GLYPH_CATDVI_contintegraldisplay,	GH_ON_AXIS},
    {GLYPH_CATDVI_circledottext,	GH_ON_AXIS},
    {GLYPH_CATDVI_circledotdisplay,	GH_ON_AXIS},
    {GLYPH_CATDVI_circleplustext,	GH_ON_AXIS},
    {GLYPH_CATDVI_circleplusdisplay,	GH_ON_AXIS},
    {GLYPH_CATDVI_circlemultiplytext,	GH_ON_AXIS},
    {GLYPH_CATDVI_circlemultiplydisplay,	GH_ON_AXIS},
    {GLYPH_CATDVI_summationtext,	GH_ON_AXIS},
    {GLYPH_CATDVI_producttext,	GH_ON_AXIS},
    {GLYPH_CATDVI_integraltext,	GH_ON_AXIS},
    {GLYPH_CATDVI_uniontext,	GH_ON_AXIS},
    {GLYPH_CATDVI_intersectiontext,	GH_ON_AXIS},
    {GLYPH_CATDVI_unionmultitext,	GH_ON_AXIS},
    {GLYPH_CATDVI_logicalandtext,	GH_ON_AXIS},
    {GLYPH_CATDVI_logicalortext,	GH_ON_AXIS},
    {GLYPH_CATDVI_summationdisplay,	GH_ON_AXIS},
    {GLYPH_CATDVI_productdisplay,	GH_ON_AXIS},
    {GLYPH_CATDVI_integraldisplay,	GH_ON_AXIS},
    {GLYPH_CATDVI_uniondisplay,	GH_ON_AXIS},
    {GLYPH_CATDVI_intersectiondisplay,	GH_ON_AXIS},
    {GLYPH_CATDVI_unionmultidisplay,	GH_ON_AXIS},
    {GLYPH_CATDVI_logicalanddisplay,	GH_ON_AXIS},
    {GLYPH_CATDVI_logicalordisplay,	GH_ON_AXIS},
    {GLYPH_CATDVI_coproducttext,	GH_ON_AXIS},
    {GLYPH_CATDVI_coproductdisplay,	GH_ON_AXIS},
    {GLYPH_CATDVI_hatwide,	GH_WIDE_DIACRITIC},
    {GLYPH_CATDVI_hatwider,	GH_WIDE_DIACRITIC},
    {GLYPH_CATDVI_hatwidest,	GH_WIDE_DIACRITIC},
    {GLYPH_CATDVI_tildewide,	GH_WIDE_DIACRITIC},
    {GLYPH_CATDVI_tildewider,	GH_WIDE_DIACRITIC},
    {GLYPH_CATDVI_tildewidest,	GH_WIDE_DIACRITIC},
    {GLYPH_CATDVI_bracketleftBig,	GH_ON_AXIS},
    {GLYPH_CATDVI_bracketrightBig,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_floorleftBig,	GH_ON_AXIS},
    {GLYPH_CATDVI_floorrightBig,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_ceilingleftBig,	GH_ON_AXIS},
    {GLYPH_CATDVI_ceilingrightBig,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_braceleftBig,	GH_ON_AXIS},
    {GLYPH_CATDVI_bracerightBig,	GH_ON_AXIS | GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_radicalbig,	GH_RADICAL},
    {GLYPH_CATDVI_radicalBig,	GH_RADICAL},
    {GLYPH_CATDVI_radicalbigg,	GH_RADICAL},
    {GLYPH_CATDVI_radicalBigg,	GH_RADICAL},
    {GLYPH_CATDVI_radicalbt,	GH_EXTENSIBLE_RECIPE},
    {GLYPH_CATDVI_radicalvertex,	GH_EXTENSIBLE_RECIPE},
    {GLYPH_CATDVI_radicaltp,	GH_EXTENSIBLE_RECIPE},
    {GLYPH_CATDVI_arrowvertexdbl,	GH_EXTENSIBLE_RECIPE},
    {GLYPH_CATDVI_arrowtp,	GH_EXTENSIBLE_RECIPE},
    {GLYPH_CATDVI_arrowbt,	GH_EXTENSIBLE_RECIPE},
    {GLYPH_CATDVI_bracehtipdownright,	GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_bracehtipupright,	GH_MOREMATH_LEFT},
    {GLYPH_CATDVI_arrowdbltp,	GH_EXTENSIBLE_RECIPE},
    {GLYPH_CATDVI_arrowdblbt,	GH_EXTENSIBLE_RECIPE},
    /* end TeX math extension */

    {GLYPH_CATDVI_tildexwide,	GH_WIDE_DIACRITIC},
    {GLYPH_CATDVI_hatxwide,	GH_WIDE_DIACRITIC},

    /* end of table */
    {0, 0}
};

static struct spars32_t hint_spars32;


/* known mappings between combining and non-combining diacritics.
 * Incomplete. Use 0 for unavailable or unknown variants.
 *
 * variant3 and variant4 are for diacritics that are doubled in the
 * unicode character set (doubled at least for our purposes and IMHO -
 * if there is some underlying philosophy, I just can't see it) and
 * should be mapped to something canonical.
 *
 * we try to keep the spacing variant in the ISO 8859-1 range if possible.
 */
struct diacritic_variantentry_t {
    glyph_t spacing;
    glyph_t combining;
    glyph_t variant3;
    glyph_t variant4;
};

static struct diacritic_variantentry_t diavars[] =
{
    {GLYPH_acute, GLYPH_acutecomb, GLYPH_UNI_acutemodifier, 0},
    {GLYPH_grave, GLYPH_gravecomb, GLYPH_UNI_gravemodifier, 0},
    {GLYPH_asciicircum, GLYPH_UNI_circumflexcomb, GLYPH_circumflex, 0},
    {GLYPH_dieresis, GLYPH_UNI_dieresiscomb, 0, 0},
    {GLYPH_tilde, GLYPH_tildecomb, GLYPH_asciitilde, 0},
    {GLYPH_ring, GLYPH_UNI_ringcomb, 0, 0},

    {GLYPH_cedilla, GLYPH_UNI_cedillacomb, 0, 0},

    {GLYPH_caron, GLYPH_UNI_caroncomb, 0, 0},
    {GLYPH_UNI_macron, GLYPH_UNI_macroncomb, GLYPH_UNI_macronmodifier, 0},
    {GLYPH_breve, GLYPH_UNI_brevecomb, 0, 0},
    {GLYPH_dotaccent, GLYPH_UNI_dotaccentcomb, GLYPH_ADOBE_periodsuperior, 0},

    {GLYPH_ogonek, GLYPH_UNI_ogonekcomb, 0, 0},
    {GLYPH_CATDVI_polishstroke, GLYPH_CATDVI_polishstrokecomb, 0, 0},

    {GLYPH_CATDVI_negationslash, GLYPH_UNI_slashlongcomb, 0, 0},
    {GLYPH_UNI_circlelarge, GLYPH_UNI_circlecomb, 0, 0},
    {GLYPH_CATDVI_vector, GLYPH_UNI_vectorcomb, 0, 0},

    {GLYPH_CATDVI_Eurodblstroke, GLYPH_CATDVI_Eurodblstrokecomb, 0, 0},

    /* end of table */
    {EOT, 0, 0, 0}
};

static struct sparp_t diavar_sparp;

void glyphops_init()
{
    struct glyph_hintentry_t * ph;
    struct diacritic_variantentry_t * pd;
    
    /* The glyph hint sparp is indexed by the glyph and points directly to
     * the hint.
     */
    spars32_init(&hint_spars32, 0);
    for(ph = hints; ph->glyph != 0; ++ph) {
    	spars32_write(&hint_spars32, ph->glyph, ph->hint);
    }
    
    /* The diacritics variant sparp is indexed by any variant of the diacritic.
     * The values point to the corresponding dicaritic_variantentry_t .
     */
    sparp_init(&diavar_sparp);
    for(pd = diavars; pd->spacing != EOT; ++pd) {
    	if(pd->spacing != 0) sparp_write(&diavar_sparp, pd->spacing, pd);
    	if(pd->combining != 0) sparp_write(&diavar_sparp, pd->combining, pd);
    	if(pd->variant3 != 0) sparp_write(&diavar_sparp, pd->variant3, pd);
    	if(pd->variant4 != 0) sparp_write(&diavar_sparp, pd->variant4, pd);
    }
    
}

enum glyph_hint_t glyph_get_hint(glyph_t glyph)
{
    return (enum glyph_hint_t) spars32_read(&hint_spars32, glyph);
}

glyph_t diacritic_combining_variant(glyph_t diacritic)
{
    struct diacritic_variantentry_t * p;
    
    p = sparp_read(&diavar_sparp, diacritic);
    return (p != NULL) ? p->combining : 0;
}

glyph_t diacritic_spacing_variant(glyph_t diacritic)
{
    struct diacritic_variantentry_t * p;
    
    p = sparp_read(&diavar_sparp, diacritic);
    return (p != NULL) ? p->spacing : 0;
}