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comparison: gfx/harfbuzz/src/hb-common.h

gfx/harfbuzz/src/hb-common.h

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TOR_BUG_9701
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925c144e1f1f
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-1:000000000000 0:8653052c4a2f
1 /*
2 * Copyright © 2007,2008,2009 Red Hat, Inc.
3 * Copyright © 2011,2012 Google, Inc.
4 *
5 * This is part of HarfBuzz, a text shaping library.
6 *
7 * Permission is hereby granted, without written agreement and without
8 * license or royalty fees, to use, copy, modify, and distribute this
9 * software and its documentation for any purpose, provided that the
10 * above copyright notice and the following two paragraphs appear in
11 * all copies of this software.
12 *
13 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
14 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
15 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
16 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
17 * DAMAGE.
18 *
19 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
20 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
21 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
22 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
23 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
24 *
25 * Red Hat Author(s): Behdad Esfahbod
26 * Google Author(s): Behdad Esfahbod
27 */
28
29 #ifndef HB_H_IN
30 #error "Include <hb.h> instead."
31 #endif
32
33 #ifndef HB_COMMON_H
34 #define HB_COMMON_H
35
36 #ifndef HB_BEGIN_DECLS
37 # ifdef __cplusplus
38 # define HB_BEGIN_DECLS extern "C" {
39 # define HB_END_DECLS }
40 # else /* !__cplusplus */
41 # define HB_BEGIN_DECLS
42 # define HB_END_DECLS
43 # endif /* !__cplusplus */
44 #endif
45
46 #if !defined (HB_DONT_DEFINE_STDINT)
47
48 #if defined (_SVR4) || defined (SVR4) || defined (__OpenBSD__) || \
49 defined (_sgi) || defined (__sun) || defined (sun) || \
50 defined (__digital__) || defined (__HP_cc)
51 # include <inttypes.h>
52 #elif defined (_AIX)
53 # include <sys/inttypes.h>
54 /* VS 2010 (_MSC_VER 1600) has stdint.h */
55 #elif defined (_MSC_VER) && _MSC_VER < 1600
56 typedef __int8 int8_t;
57 typedef unsigned __int8 uint8_t;
58 typedef __int16 int16_t;
59 typedef unsigned __int16 uint16_t;
60 typedef __int32 int32_t;
61 typedef unsigned __int32 uint32_t;
62 typedef __int64 int64_t;
63 typedef unsigned __int64 uint64_t;
64 #else
65 # include <stdint.h>
66 #endif
67
68 #endif
69
70 HB_BEGIN_DECLS
71
72
73 typedef int hb_bool_t;
74
75 typedef uint32_t hb_codepoint_t;
76 typedef int32_t hb_position_t;
77 typedef uint32_t hb_mask_t;
78
79 typedef union _hb_var_int_t {
80 uint32_t u32;
81 int32_t i32;
82 uint16_t u16[2];
83 int16_t i16[2];
84 uint8_t u8[4];
85 int8_t i8[4];
86 } hb_var_int_t;
87
88
89 /* hb_tag_t */
90
91 typedef uint32_t hb_tag_t;
92
93 #define HB_TAG(c1,c2,c3,c4) ((hb_tag_t)((((uint8_t)(c1))<<24)|(((uint8_t)(c2))<<16)|(((uint8_t)(c3))<<8)|((uint8_t)(c4))))
94 #define HB_UNTAG(tag) ((uint8_t)((tag)>>24)), ((uint8_t)((tag)>>16)), ((uint8_t)((tag)>>8)), ((uint8_t)(tag))
95
96 #define HB_TAG_NONE HB_TAG(0,0,0,0)
97 #define HB_TAG_MAX HB_TAG(0xff,0xff,0xff,0xff)
98
99 /* len=-1 means str is NUL-terminated. */
100 hb_tag_t
101 hb_tag_from_string (const char *str, int len);
102
103 /* buf should have 4 bytes. */
104 void
105 hb_tag_to_string (hb_tag_t tag, char *buf);
106
107
108 /* hb_direction_t */
109
110 typedef enum {
111 HB_DIRECTION_INVALID = 0,
112 HB_DIRECTION_LTR = 4,
113 HB_DIRECTION_RTL,
114 HB_DIRECTION_TTB,
115 HB_DIRECTION_BTT
116 } hb_direction_t;
117
118 /* len=-1 means str is NUL-terminated */
119 hb_direction_t
120 hb_direction_from_string (const char *str, int len);
121
122 const char *
123 hb_direction_to_string (hb_direction_t direction);
124
125 #define HB_DIRECTION_IS_HORIZONTAL(dir) ((((unsigned int) (dir)) & ~1U) == 4)
126 #define HB_DIRECTION_IS_VERTICAL(dir) ((((unsigned int) (dir)) & ~1U) == 6)
127 #define HB_DIRECTION_IS_FORWARD(dir) ((((unsigned int) (dir)) & ~2U) == 4)
128 #define HB_DIRECTION_IS_BACKWARD(dir) ((((unsigned int) (dir)) & ~2U) == 5)
129 #define HB_DIRECTION_IS_VALID(dir) ((((unsigned int) (dir)) & ~3U) == 4)
130 #define HB_DIRECTION_REVERSE(dir) ((hb_direction_t) (((unsigned int) (dir)) ^ 1)) /* Direction must be valid */
131
132
133 /* hb_language_t */
134
135 typedef const struct hb_language_impl_t *hb_language_t;
136
137 /* len=-1 means str is NUL-terminated */
138 hb_language_t
139 hb_language_from_string (const char *str, int len);
140
141 const char *
142 hb_language_to_string (hb_language_t language);
143
144 #define HB_LANGUAGE_INVALID ((hb_language_t) NULL)
145
146 hb_language_t
147 hb_language_get_default (void);
148
149
150 /* hb_script_t */
151
152 /* http://unicode.org/iso15924/ */
153 /* http://goo.gl/x9ilM */
154 /* Unicode Character Database property: Script (sc) */
155 typedef enum
156 {
157 /*1.1*/ HB_SCRIPT_COMMON = HB_TAG ('Z','y','y','y'),
158 /*1.1*/ HB_SCRIPT_INHERITED = HB_TAG ('Z','i','n','h'),
159 /*5.0*/ HB_SCRIPT_UNKNOWN = HB_TAG ('Z','z','z','z'),
160
161 /*1.1*/ HB_SCRIPT_ARABIC = HB_TAG ('A','r','a','b'),
162 /*1.1*/ HB_SCRIPT_ARMENIAN = HB_TAG ('A','r','m','n'),
163 /*1.1*/ HB_SCRIPT_BENGALI = HB_TAG ('B','e','n','g'),
164 /*1.1*/ HB_SCRIPT_CYRILLIC = HB_TAG ('C','y','r','l'),
165 /*1.1*/ HB_SCRIPT_DEVANAGARI = HB_TAG ('D','e','v','a'),
166 /*1.1*/ HB_SCRIPT_GEORGIAN = HB_TAG ('G','e','o','r'),
167 /*1.1*/ HB_SCRIPT_GREEK = HB_TAG ('G','r','e','k'),
168 /*1.1*/ HB_SCRIPT_GUJARATI = HB_TAG ('G','u','j','r'),
169 /*1.1*/ HB_SCRIPT_GURMUKHI = HB_TAG ('G','u','r','u'),
170 /*1.1*/ HB_SCRIPT_HANGUL = HB_TAG ('H','a','n','g'),
171 /*1.1*/ HB_SCRIPT_HAN = HB_TAG ('H','a','n','i'),
172 /*1.1*/ HB_SCRIPT_HEBREW = HB_TAG ('H','e','b','r'),
173 /*1.1*/ HB_SCRIPT_HIRAGANA = HB_TAG ('H','i','r','a'),
174 /*1.1*/ HB_SCRIPT_KANNADA = HB_TAG ('K','n','d','a'),
175 /*1.1*/ HB_SCRIPT_KATAKANA = HB_TAG ('K','a','n','a'),
176 /*1.1*/ HB_SCRIPT_LAO = HB_TAG ('L','a','o','o'),
177 /*1.1*/ HB_SCRIPT_LATIN = HB_TAG ('L','a','t','n'),
178 /*1.1*/ HB_SCRIPT_MALAYALAM = HB_TAG ('M','l','y','m'),
179 /*1.1*/ HB_SCRIPT_ORIYA = HB_TAG ('O','r','y','a'),
180 /*1.1*/ HB_SCRIPT_TAMIL = HB_TAG ('T','a','m','l'),
181 /*1.1*/ HB_SCRIPT_TELUGU = HB_TAG ('T','e','l','u'),
182 /*1.1*/ HB_SCRIPT_THAI = HB_TAG ('T','h','a','i'),
183
184 /*2.0*/ HB_SCRIPT_TIBETAN = HB_TAG ('T','i','b','t'),
185
186 /*3.0*/ HB_SCRIPT_BOPOMOFO = HB_TAG ('B','o','p','o'),
187 /*3.0*/ HB_SCRIPT_BRAILLE = HB_TAG ('B','r','a','i'),
188 /*3.0*/ HB_SCRIPT_CANADIAN_SYLLABICS = HB_TAG ('C','a','n','s'),
189 /*3.0*/ HB_SCRIPT_CHEROKEE = HB_TAG ('C','h','e','r'),
190 /*3.0*/ HB_SCRIPT_ETHIOPIC = HB_TAG ('E','t','h','i'),
191 /*3.0*/ HB_SCRIPT_KHMER = HB_TAG ('K','h','m','r'),
192 /*3.0*/ HB_SCRIPT_MONGOLIAN = HB_TAG ('M','o','n','g'),
193 /*3.0*/ HB_SCRIPT_MYANMAR = HB_TAG ('M','y','m','r'),
194 /*3.0*/ HB_SCRIPT_OGHAM = HB_TAG ('O','g','a','m'),
195 /*3.0*/ HB_SCRIPT_RUNIC = HB_TAG ('R','u','n','r'),
196 /*3.0*/ HB_SCRIPT_SINHALA = HB_TAG ('S','i','n','h'),
197 /*3.0*/ HB_SCRIPT_SYRIAC = HB_TAG ('S','y','r','c'),
198 /*3.0*/ HB_SCRIPT_THAANA = HB_TAG ('T','h','a','a'),
199 /*3.0*/ HB_SCRIPT_YI = HB_TAG ('Y','i','i','i'),
200
201 /*3.1*/ HB_SCRIPT_DESERET = HB_TAG ('D','s','r','t'),
202 /*3.1*/ HB_SCRIPT_GOTHIC = HB_TAG ('G','o','t','h'),
203 /*3.1*/ HB_SCRIPT_OLD_ITALIC = HB_TAG ('I','t','a','l'),
204
205 /*3.2*/ HB_SCRIPT_BUHID = HB_TAG ('B','u','h','d'),
206 /*3.2*/ HB_SCRIPT_HANUNOO = HB_TAG ('H','a','n','o'),
207 /*3.2*/ HB_SCRIPT_TAGALOG = HB_TAG ('T','g','l','g'),
208 /*3.2*/ HB_SCRIPT_TAGBANWA = HB_TAG ('T','a','g','b'),
209
210 /*4.0*/ HB_SCRIPT_CYPRIOT = HB_TAG ('C','p','r','t'),
211 /*4.0*/ HB_SCRIPT_LIMBU = HB_TAG ('L','i','m','b'),
212 /*4.0*/ HB_SCRIPT_LINEAR_B = HB_TAG ('L','i','n','b'),
213 /*4.0*/ HB_SCRIPT_OSMANYA = HB_TAG ('O','s','m','a'),
214 /*4.0*/ HB_SCRIPT_SHAVIAN = HB_TAG ('S','h','a','w'),
215 /*4.0*/ HB_SCRIPT_TAI_LE = HB_TAG ('T','a','l','e'),
216 /*4.0*/ HB_SCRIPT_UGARITIC = HB_TAG ('U','g','a','r'),
217
218 /*4.1*/ HB_SCRIPT_BUGINESE = HB_TAG ('B','u','g','i'),
219 /*4.1*/ HB_SCRIPT_COPTIC = HB_TAG ('C','o','p','t'),
220 /*4.1*/ HB_SCRIPT_GLAGOLITIC = HB_TAG ('G','l','a','g'),
221 /*4.1*/ HB_SCRIPT_KHAROSHTHI = HB_TAG ('K','h','a','r'),
222 /*4.1*/ HB_SCRIPT_NEW_TAI_LUE = HB_TAG ('T','a','l','u'),
223 /*4.1*/ HB_SCRIPT_OLD_PERSIAN = HB_TAG ('X','p','e','o'),
224 /*4.1*/ HB_SCRIPT_SYLOTI_NAGRI = HB_TAG ('S','y','l','o'),
225 /*4.1*/ HB_SCRIPT_TIFINAGH = HB_TAG ('T','f','n','g'),
226
227 /*5.0*/ HB_SCRIPT_BALINESE = HB_TAG ('B','a','l','i'),
228 /*5.0*/ HB_SCRIPT_CUNEIFORM = HB_TAG ('X','s','u','x'),
229 /*5.0*/ HB_SCRIPT_NKO = HB_TAG ('N','k','o','o'),
230 /*5.0*/ HB_SCRIPT_PHAGS_PA = HB_TAG ('P','h','a','g'),
231 /*5.0*/ HB_SCRIPT_PHOENICIAN = HB_TAG ('P','h','n','x'),
232
233 /*5.1*/ HB_SCRIPT_CARIAN = HB_TAG ('C','a','r','i'),
234 /*5.1*/ HB_SCRIPT_CHAM = HB_TAG ('C','h','a','m'),
235 /*5.1*/ HB_SCRIPT_KAYAH_LI = HB_TAG ('K','a','l','i'),
236 /*5.1*/ HB_SCRIPT_LEPCHA = HB_TAG ('L','e','p','c'),
237 /*5.1*/ HB_SCRIPT_LYCIAN = HB_TAG ('L','y','c','i'),
238 /*5.1*/ HB_SCRIPT_LYDIAN = HB_TAG ('L','y','d','i'),
239 /*5.1*/ HB_SCRIPT_OL_CHIKI = HB_TAG ('O','l','c','k'),
240 /*5.1*/ HB_SCRIPT_REJANG = HB_TAG ('R','j','n','g'),
241 /*5.1*/ HB_SCRIPT_SAURASHTRA = HB_TAG ('S','a','u','r'),
242 /*5.1*/ HB_SCRIPT_SUNDANESE = HB_TAG ('S','u','n','d'),
243 /*5.1*/ HB_SCRIPT_VAI = HB_TAG ('V','a','i','i'),
244
245 /*5.2*/ HB_SCRIPT_AVESTAN = HB_TAG ('A','v','s','t'),
246 /*5.2*/ HB_SCRIPT_BAMUM = HB_TAG ('B','a','m','u'),
247 /*5.2*/ HB_SCRIPT_EGYPTIAN_HIEROGLYPHS = HB_TAG ('E','g','y','p'),
248 /*5.2*/ HB_SCRIPT_IMPERIAL_ARAMAIC = HB_TAG ('A','r','m','i'),
249 /*5.2*/ HB_SCRIPT_INSCRIPTIONAL_PAHLAVI = HB_TAG ('P','h','l','i'),
250 /*5.2*/ HB_SCRIPT_INSCRIPTIONAL_PARTHIAN = HB_TAG ('P','r','t','i'),
251 /*5.2*/ HB_SCRIPT_JAVANESE = HB_TAG ('J','a','v','a'),
252 /*5.2*/ HB_SCRIPT_KAITHI = HB_TAG ('K','t','h','i'),
253 /*5.2*/ HB_SCRIPT_LISU = HB_TAG ('L','i','s','u'),
254 /*5.2*/ HB_SCRIPT_MEETEI_MAYEK = HB_TAG ('M','t','e','i'),
255 /*5.2*/ HB_SCRIPT_OLD_SOUTH_ARABIAN = HB_TAG ('S','a','r','b'),
256 /*5.2*/ HB_SCRIPT_OLD_TURKIC = HB_TAG ('O','r','k','h'),
257 /*5.2*/ HB_SCRIPT_SAMARITAN = HB_TAG ('S','a','m','r'),
258 /*5.2*/ HB_SCRIPT_TAI_THAM = HB_TAG ('L','a','n','a'),
259 /*5.2*/ HB_SCRIPT_TAI_VIET = HB_TAG ('T','a','v','t'),
260
261 /*6.0*/ HB_SCRIPT_BATAK = HB_TAG ('B','a','t','k'),
262 /*6.0*/ HB_SCRIPT_BRAHMI = HB_TAG ('B','r','a','h'),
263 /*6.0*/ HB_SCRIPT_MANDAIC = HB_TAG ('M','a','n','d'),
264
265 /*6.1*/ HB_SCRIPT_CHAKMA = HB_TAG ('C','a','k','m'),
266 /*6.1*/ HB_SCRIPT_MEROITIC_CURSIVE = HB_TAG ('M','e','r','c'),
267 /*6.1*/ HB_SCRIPT_MEROITIC_HIEROGLYPHS = HB_TAG ('M','e','r','o'),
268 /*6.1*/ HB_SCRIPT_MIAO = HB_TAG ('P','l','r','d'),
269 /*6.1*/ HB_SCRIPT_SHARADA = HB_TAG ('S','h','r','d'),
270 /*6.1*/ HB_SCRIPT_SORA_SOMPENG = HB_TAG ('S','o','r','a'),
271 /*6.1*/ HB_SCRIPT_TAKRI = HB_TAG ('T','a','k','r'),
272
273 /* No script set. */
274 /*---*/ HB_SCRIPT_INVALID = HB_TAG_NONE,
275
276 /* Dummy value to ensure any hb_tag_t value can be passed/stored as hb_script_t
277 * without risking undefined behavior. */
278 /*---*/ _HB_SCRIPT_MAX_VALUE = HB_TAG_MAX
279
280 } hb_script_t;
281
282 /* These are moved out of hb_script_t because glib-mkenums chokes otherwise. */
283 #if 0
284 /*7.0*/ HB_SCRIPT_BASSA_VAH = HB_TAG ('B','a','s','s'),
285 /*7.0*/ HB_SCRIPT_CAUCASIAN_ALBANIAN = HB_TAG ('A','g','h','b'),
286 /*7.0*/ HB_SCRIPT_DUPLOYAN = HB_TAG ('D','u','p','l'),
287 /*7.0*/ HB_SCRIPT_ELBASAN = HB_TAG ('E','l','b','a'),
288 /*7.0*/ HB_SCRIPT_GRANTHA = HB_TAG ('G','r','a','n'),
289 /*7.0*/ HB_SCRIPT_KHOJKI = HB_TAG ('K','h','o','j'),
290 /*7.0*/ HB_SCRIPT_KHUDAWADI = HB_TAG ('S','i','n','d'),
291 /*7.0*/ HB_SCRIPT_LINEAR_A = HB_TAG ('L','i','n','a'),
292 /*7.0*/ HB_SCRIPT_MAHAJANI = HB_TAG ('M','a','h','j'),
293 /*7.0*/ HB_SCRIPT_MANICHAEAN = HB_TAG ('M','a','n','i'),
294 /*7.0*/ HB_SCRIPT_MENDE_KIKAKUI = HB_TAG ('M','e','n','d'),
295 /*7.0*/ HB_SCRIPT_MODI = ???
296 /*7.0*/ HB_SCRIPT_MRO = HB_TAG ('M','r','o','o'),
297 /*7.0*/ HB_SCRIPT_NABATAEAN = HB_TAG ('N','b','a','t'),
298 /*7.0*/ HB_SCRIPT_OLD_NORTH_ARABIAN = HB_TAG ('N','a','r','b'),
299 /*7.0*/ HB_SCRIPT_OLD_PERMIC = HB_TAG ('P','e','r','m'),
300 /*7.0*/ HB_SCRIPT_PAHAWH_HMONG = HB_TAG ('H','m','n','g'),
301 /*7.0*/ HB_SCRIPT_PALMYRENE = HB_TAG ('P','a','l','m'),
302 /*7.0*/ HB_SCRIPT_PAU_CIN_HAU = ???
303 /*7.0*/ HB_SCRIPT_PSALTER_PAHLAVI = HB_TAG ('P','h','l','p'),
304 /*7.0*/ HB_SCRIPT_SIDDHAM = ???
305 /*7.0*/ HB_SCRIPT_TIRHUTA = HB_TAG ('T','i','r','h'),
306 /*7.0*/ HB_SCRIPT_WARANG_CITI = HB_TAG ('W','a','r','a'),
307 #endif
308
309
310 /* Script functions */
311
312 hb_script_t
313 hb_script_from_iso15924_tag (hb_tag_t tag);
314
315 /* suger for tag_from_string() then script_from_iso15924_tag */
316 /* len=-1 means s is NUL-terminated */
317 hb_script_t
318 hb_script_from_string (const char *s, int len);
319
320 hb_tag_t
321 hb_script_to_iso15924_tag (hb_script_t script);
322
323 hb_direction_t
324 hb_script_get_horizontal_direction (hb_script_t script);
325
326
327 /* User data */
328
329 typedef struct hb_user_data_key_t {
330 /*< private >*/
331 char unused;
332 } hb_user_data_key_t;
333
334 typedef void (*hb_destroy_func_t) (void *user_data);
335
336
337 HB_END_DECLS
338
339 #endif /* HB_COMMON_H */

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