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1 /* |
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2 * Copyright © 2007,2008,2009 Red Hat, Inc. |
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3 * Copyright © 2011,2012 Google, Inc. |
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4 * |
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5 * This is part of HarfBuzz, a text shaping library. |
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6 * |
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7 * Permission is hereby granted, without written agreement and without |
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8 * license or royalty fees, to use, copy, modify, and distribute this |
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9 * software and its documentation for any purpose, provided that the |
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10 * above copyright notice and the following two paragraphs appear in |
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11 * all copies of this software. |
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12 * |
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13 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
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14 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
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15 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN |
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16 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
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17 * DAMAGE. |
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18 * |
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19 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
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20 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
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21 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
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22 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
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23 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
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24 * |
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25 * Red Hat Author(s): Behdad Esfahbod |
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26 * Google Author(s): Behdad Esfahbod |
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27 */ |
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28 |
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29 #ifndef HB_H_IN |
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30 #error "Include <hb.h> instead." |
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31 #endif |
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32 |
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33 #ifndef HB_COMMON_H |
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34 #define HB_COMMON_H |
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35 |
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36 #ifndef HB_BEGIN_DECLS |
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37 # ifdef __cplusplus |
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38 # define HB_BEGIN_DECLS extern "C" { |
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39 # define HB_END_DECLS } |
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40 # else /* !__cplusplus */ |
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41 # define HB_BEGIN_DECLS |
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42 # define HB_END_DECLS |
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43 # endif /* !__cplusplus */ |
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44 #endif |
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45 |
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46 #if !defined (HB_DONT_DEFINE_STDINT) |
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47 |
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48 #if defined (_SVR4) || defined (SVR4) || defined (__OpenBSD__) || \ |
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49 defined (_sgi) || defined (__sun) || defined (sun) || \ |
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50 defined (__digital__) || defined (__HP_cc) |
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51 # include <inttypes.h> |
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52 #elif defined (_AIX) |
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53 # include <sys/inttypes.h> |
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54 /* VS 2010 (_MSC_VER 1600) has stdint.h */ |
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55 #elif defined (_MSC_VER) && _MSC_VER < 1600 |
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56 typedef __int8 int8_t; |
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57 typedef unsigned __int8 uint8_t; |
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58 typedef __int16 int16_t; |
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59 typedef unsigned __int16 uint16_t; |
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60 typedef __int32 int32_t; |
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61 typedef unsigned __int32 uint32_t; |
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62 typedef __int64 int64_t; |
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63 typedef unsigned __int64 uint64_t; |
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64 #else |
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65 # include <stdint.h> |
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66 #endif |
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67 |
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68 #endif |
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69 |
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70 HB_BEGIN_DECLS |
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71 |
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72 |
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73 typedef int hb_bool_t; |
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74 |
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75 typedef uint32_t hb_codepoint_t; |
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76 typedef int32_t hb_position_t; |
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77 typedef uint32_t hb_mask_t; |
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78 |
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79 typedef union _hb_var_int_t { |
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80 uint32_t u32; |
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81 int32_t i32; |
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82 uint16_t u16[2]; |
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83 int16_t i16[2]; |
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84 uint8_t u8[4]; |
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85 int8_t i8[4]; |
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86 } hb_var_int_t; |
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87 |
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88 |
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89 /* hb_tag_t */ |
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90 |
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91 typedef uint32_t hb_tag_t; |
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92 |
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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)))) |
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94 #define HB_UNTAG(tag) ((uint8_t)((tag)>>24)), ((uint8_t)((tag)>>16)), ((uint8_t)((tag)>>8)), ((uint8_t)(tag)) |
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95 |
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96 #define HB_TAG_NONE HB_TAG(0,0,0,0) |
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97 #define HB_TAG_MAX HB_TAG(0xff,0xff,0xff,0xff) |
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98 #define HB_TAG_MAX_SIGNED HB_TAG(0x7f,0xff,0xff,0xff) |
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99 |
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100 /* len=-1 means str is NUL-terminated. */ |
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101 hb_tag_t |
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102 hb_tag_from_string (const char *str, int len); |
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103 |
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104 /* buf should have 4 bytes. */ |
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105 void |
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106 hb_tag_to_string (hb_tag_t tag, char *buf); |
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107 |
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108 |
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109 /* hb_direction_t */ |
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110 |
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111 typedef enum { |
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112 HB_DIRECTION_INVALID = 0, |
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113 HB_DIRECTION_LTR = 4, |
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114 HB_DIRECTION_RTL, |
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115 HB_DIRECTION_TTB, |
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116 HB_DIRECTION_BTT |
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117 } hb_direction_t; |
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118 |
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119 /* len=-1 means str is NUL-terminated */ |
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120 hb_direction_t |
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121 hb_direction_from_string (const char *str, int len); |
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122 |
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123 const char * |
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124 hb_direction_to_string (hb_direction_t direction); |
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125 |
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126 #define HB_DIRECTION_IS_VALID(dir) ((((unsigned int) (dir)) & ~3U) == 4) |
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127 /* Direction must be valid for the following */ |
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128 #define HB_DIRECTION_IS_HORIZONTAL(dir) ((((unsigned int) (dir)) & ~1U) == 4) |
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129 #define HB_DIRECTION_IS_VERTICAL(dir) ((((unsigned int) (dir)) & ~1U) == 6) |
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130 #define HB_DIRECTION_IS_FORWARD(dir) ((((unsigned int) (dir)) & ~2U) == 4) |
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131 #define HB_DIRECTION_IS_BACKWARD(dir) ((((unsigned int) (dir)) & ~2U) == 5) |
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132 #define HB_DIRECTION_REVERSE(dir) ((hb_direction_t) (((unsigned int) (dir)) ^ 1)) |
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133 |
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134 |
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135 /* hb_language_t */ |
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136 |
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137 typedef const struct hb_language_impl_t *hb_language_t; |
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138 |
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139 /* len=-1 means str is NUL-terminated */ |
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140 hb_language_t |
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141 hb_language_from_string (const char *str, int len); |
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142 |
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143 const char * |
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144 hb_language_to_string (hb_language_t language); |
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145 |
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146 #define HB_LANGUAGE_INVALID ((hb_language_t) NULL) |
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147 |
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148 hb_language_t |
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149 hb_language_get_default (void); |
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150 |
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151 |
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152 /* hb_script_t */ |
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153 |
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154 /* http://unicode.org/iso15924/ */ |
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155 /* http://goo.gl/x9ilM */ |
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156 /* Unicode Character Database property: Script (sc) */ |
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157 typedef enum |
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158 { |
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159 /*1.1*/ HB_SCRIPT_COMMON = HB_TAG ('Z','y','y','y'), |
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160 /*1.1*/ HB_SCRIPT_INHERITED = HB_TAG ('Z','i','n','h'), |
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161 /*5.0*/ HB_SCRIPT_UNKNOWN = HB_TAG ('Z','z','z','z'), |
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162 |
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163 /*1.1*/ HB_SCRIPT_ARABIC = HB_TAG ('A','r','a','b'), |
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164 /*1.1*/ HB_SCRIPT_ARMENIAN = HB_TAG ('A','r','m','n'), |
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165 /*1.1*/ HB_SCRIPT_BENGALI = HB_TAG ('B','e','n','g'), |
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166 /*1.1*/ HB_SCRIPT_CYRILLIC = HB_TAG ('C','y','r','l'), |
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167 /*1.1*/ HB_SCRIPT_DEVANAGARI = HB_TAG ('D','e','v','a'), |
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168 /*1.1*/ HB_SCRIPT_GEORGIAN = HB_TAG ('G','e','o','r'), |
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169 /*1.1*/ HB_SCRIPT_GREEK = HB_TAG ('G','r','e','k'), |
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170 /*1.1*/ HB_SCRIPT_GUJARATI = HB_TAG ('G','u','j','r'), |
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171 /*1.1*/ HB_SCRIPT_GURMUKHI = HB_TAG ('G','u','r','u'), |
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172 /*1.1*/ HB_SCRIPT_HANGUL = HB_TAG ('H','a','n','g'), |
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173 /*1.1*/ HB_SCRIPT_HAN = HB_TAG ('H','a','n','i'), |
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174 /*1.1*/ HB_SCRIPT_HEBREW = HB_TAG ('H','e','b','r'), |
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175 /*1.1*/ HB_SCRIPT_HIRAGANA = HB_TAG ('H','i','r','a'), |
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176 /*1.1*/ HB_SCRIPT_KANNADA = HB_TAG ('K','n','d','a'), |
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177 /*1.1*/ HB_SCRIPT_KATAKANA = HB_TAG ('K','a','n','a'), |
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178 /*1.1*/ HB_SCRIPT_LAO = HB_TAG ('L','a','o','o'), |
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179 /*1.1*/ HB_SCRIPT_LATIN = HB_TAG ('L','a','t','n'), |
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180 /*1.1*/ HB_SCRIPT_MALAYALAM = HB_TAG ('M','l','y','m'), |
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181 /*1.1*/ HB_SCRIPT_ORIYA = HB_TAG ('O','r','y','a'), |
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182 /*1.1*/ HB_SCRIPT_TAMIL = HB_TAG ('T','a','m','l'), |
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183 /*1.1*/ HB_SCRIPT_TELUGU = HB_TAG ('T','e','l','u'), |
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184 /*1.1*/ HB_SCRIPT_THAI = HB_TAG ('T','h','a','i'), |
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185 |
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186 /*2.0*/ HB_SCRIPT_TIBETAN = HB_TAG ('T','i','b','t'), |
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187 |
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188 /*3.0*/ HB_SCRIPT_BOPOMOFO = HB_TAG ('B','o','p','o'), |
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189 /*3.0*/ HB_SCRIPT_BRAILLE = HB_TAG ('B','r','a','i'), |
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190 /*3.0*/ HB_SCRIPT_CANADIAN_SYLLABICS = HB_TAG ('C','a','n','s'), |
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191 /*3.0*/ HB_SCRIPT_CHEROKEE = HB_TAG ('C','h','e','r'), |
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192 /*3.0*/ HB_SCRIPT_ETHIOPIC = HB_TAG ('E','t','h','i'), |
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193 /*3.0*/ HB_SCRIPT_KHMER = HB_TAG ('K','h','m','r'), |
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194 /*3.0*/ HB_SCRIPT_MONGOLIAN = HB_TAG ('M','o','n','g'), |
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195 /*3.0*/ HB_SCRIPT_MYANMAR = HB_TAG ('M','y','m','r'), |
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196 /*3.0*/ HB_SCRIPT_OGHAM = HB_TAG ('O','g','a','m'), |
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197 /*3.0*/ HB_SCRIPT_RUNIC = HB_TAG ('R','u','n','r'), |
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198 /*3.0*/ HB_SCRIPT_SINHALA = HB_TAG ('S','i','n','h'), |
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199 /*3.0*/ HB_SCRIPT_SYRIAC = HB_TAG ('S','y','r','c'), |
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200 /*3.0*/ HB_SCRIPT_THAANA = HB_TAG ('T','h','a','a'), |
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201 /*3.0*/ HB_SCRIPT_YI = HB_TAG ('Y','i','i','i'), |
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202 |
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203 /*3.1*/ HB_SCRIPT_DESERET = HB_TAG ('D','s','r','t'), |
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204 /*3.1*/ HB_SCRIPT_GOTHIC = HB_TAG ('G','o','t','h'), |
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205 /*3.1*/ HB_SCRIPT_OLD_ITALIC = HB_TAG ('I','t','a','l'), |
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206 |
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207 /*3.2*/ HB_SCRIPT_BUHID = HB_TAG ('B','u','h','d'), |
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208 /*3.2*/ HB_SCRIPT_HANUNOO = HB_TAG ('H','a','n','o'), |
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209 /*3.2*/ HB_SCRIPT_TAGALOG = HB_TAG ('T','g','l','g'), |
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210 /*3.2*/ HB_SCRIPT_TAGBANWA = HB_TAG ('T','a','g','b'), |
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211 |
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212 /*4.0*/ HB_SCRIPT_CYPRIOT = HB_TAG ('C','p','r','t'), |
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213 /*4.0*/ HB_SCRIPT_LIMBU = HB_TAG ('L','i','m','b'), |
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214 /*4.0*/ HB_SCRIPT_LINEAR_B = HB_TAG ('L','i','n','b'), |
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215 /*4.0*/ HB_SCRIPT_OSMANYA = HB_TAG ('O','s','m','a'), |
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216 /*4.0*/ HB_SCRIPT_SHAVIAN = HB_TAG ('S','h','a','w'), |
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217 /*4.0*/ HB_SCRIPT_TAI_LE = HB_TAG ('T','a','l','e'), |
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218 /*4.0*/ HB_SCRIPT_UGARITIC = HB_TAG ('U','g','a','r'), |
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219 |
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220 /*4.1*/ HB_SCRIPT_BUGINESE = HB_TAG ('B','u','g','i'), |
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221 /*4.1*/ HB_SCRIPT_COPTIC = HB_TAG ('C','o','p','t'), |
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222 /*4.1*/ HB_SCRIPT_GLAGOLITIC = HB_TAG ('G','l','a','g'), |
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223 /*4.1*/ HB_SCRIPT_KHAROSHTHI = HB_TAG ('K','h','a','r'), |
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224 /*4.1*/ HB_SCRIPT_NEW_TAI_LUE = HB_TAG ('T','a','l','u'), |
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225 /*4.1*/ HB_SCRIPT_OLD_PERSIAN = HB_TAG ('X','p','e','o'), |
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226 /*4.1*/ HB_SCRIPT_SYLOTI_NAGRI = HB_TAG ('S','y','l','o'), |
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227 /*4.1*/ HB_SCRIPT_TIFINAGH = HB_TAG ('T','f','n','g'), |
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228 |
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229 /*5.0*/ HB_SCRIPT_BALINESE = HB_TAG ('B','a','l','i'), |
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230 /*5.0*/ HB_SCRIPT_CUNEIFORM = HB_TAG ('X','s','u','x'), |
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231 /*5.0*/ HB_SCRIPT_NKO = HB_TAG ('N','k','o','o'), |
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232 /*5.0*/ HB_SCRIPT_PHAGS_PA = HB_TAG ('P','h','a','g'), |
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233 /*5.0*/ HB_SCRIPT_PHOENICIAN = HB_TAG ('P','h','n','x'), |
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234 |
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235 /*5.1*/ HB_SCRIPT_CARIAN = HB_TAG ('C','a','r','i'), |
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236 /*5.1*/ HB_SCRIPT_CHAM = HB_TAG ('C','h','a','m'), |
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237 /*5.1*/ HB_SCRIPT_KAYAH_LI = HB_TAG ('K','a','l','i'), |
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238 /*5.1*/ HB_SCRIPT_LEPCHA = HB_TAG ('L','e','p','c'), |
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239 /*5.1*/ HB_SCRIPT_LYCIAN = HB_TAG ('L','y','c','i'), |
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240 /*5.1*/ HB_SCRIPT_LYDIAN = HB_TAG ('L','y','d','i'), |
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241 /*5.1*/ HB_SCRIPT_OL_CHIKI = HB_TAG ('O','l','c','k'), |
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242 /*5.1*/ HB_SCRIPT_REJANG = HB_TAG ('R','j','n','g'), |
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243 /*5.1*/ HB_SCRIPT_SAURASHTRA = HB_TAG ('S','a','u','r'), |
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244 /*5.1*/ HB_SCRIPT_SUNDANESE = HB_TAG ('S','u','n','d'), |
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245 /*5.1*/ HB_SCRIPT_VAI = HB_TAG ('V','a','i','i'), |
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246 |
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247 /*5.2*/ HB_SCRIPT_AVESTAN = HB_TAG ('A','v','s','t'), |
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248 /*5.2*/ HB_SCRIPT_BAMUM = HB_TAG ('B','a','m','u'), |
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249 /*5.2*/ HB_SCRIPT_EGYPTIAN_HIEROGLYPHS = HB_TAG ('E','g','y','p'), |
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250 /*5.2*/ HB_SCRIPT_IMPERIAL_ARAMAIC = HB_TAG ('A','r','m','i'), |
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251 /*5.2*/ HB_SCRIPT_INSCRIPTIONAL_PAHLAVI = HB_TAG ('P','h','l','i'), |
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252 /*5.2*/ HB_SCRIPT_INSCRIPTIONAL_PARTHIAN = HB_TAG ('P','r','t','i'), |
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253 /*5.2*/ HB_SCRIPT_JAVANESE = HB_TAG ('J','a','v','a'), |
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254 /*5.2*/ HB_SCRIPT_KAITHI = HB_TAG ('K','t','h','i'), |
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255 /*5.2*/ HB_SCRIPT_LISU = HB_TAG ('L','i','s','u'), |
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256 /*5.2*/ HB_SCRIPT_MEETEI_MAYEK = HB_TAG ('M','t','e','i'), |
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257 /*5.2*/ HB_SCRIPT_OLD_SOUTH_ARABIAN = HB_TAG ('S','a','r','b'), |
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258 /*5.2*/ HB_SCRIPT_OLD_TURKIC = HB_TAG ('O','r','k','h'), |
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259 /*5.2*/ HB_SCRIPT_SAMARITAN = HB_TAG ('S','a','m','r'), |
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260 /*5.2*/ HB_SCRIPT_TAI_THAM = HB_TAG ('L','a','n','a'), |
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261 /*5.2*/ HB_SCRIPT_TAI_VIET = HB_TAG ('T','a','v','t'), |
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262 |
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263 /*6.0*/ HB_SCRIPT_BATAK = HB_TAG ('B','a','t','k'), |
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264 /*6.0*/ HB_SCRIPT_BRAHMI = HB_TAG ('B','r','a','h'), |
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265 /*6.0*/ HB_SCRIPT_MANDAIC = HB_TAG ('M','a','n','d'), |
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266 |
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267 /*6.1*/ HB_SCRIPT_CHAKMA = HB_TAG ('C','a','k','m'), |
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268 /*6.1*/ HB_SCRIPT_MEROITIC_CURSIVE = HB_TAG ('M','e','r','c'), |
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269 /*6.1*/ HB_SCRIPT_MEROITIC_HIEROGLYPHS = HB_TAG ('M','e','r','o'), |
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270 /*6.1*/ HB_SCRIPT_MIAO = HB_TAG ('P','l','r','d'), |
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271 /*6.1*/ HB_SCRIPT_SHARADA = HB_TAG ('S','h','r','d'), |
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272 /*6.1*/ HB_SCRIPT_SORA_SOMPENG = HB_TAG ('S','o','r','a'), |
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273 /*6.1*/ HB_SCRIPT_TAKRI = HB_TAG ('T','a','k','r'), |
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274 |
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275 /* |
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276 * Since: 0.9.30 |
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277 */ |
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278 /*7.0*/ HB_SCRIPT_BASSA_VAH = HB_TAG ('B','a','s','s'), |
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279 /*7.0*/ HB_SCRIPT_CAUCASIAN_ALBANIAN = HB_TAG ('A','g','h','b'), |
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280 /*7.0*/ HB_SCRIPT_DUPLOYAN = HB_TAG ('D','u','p','l'), |
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281 /*7.0*/ HB_SCRIPT_ELBASAN = HB_TAG ('E','l','b','a'), |
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282 /*7.0*/ HB_SCRIPT_GRANTHA = HB_TAG ('G','r','a','n'), |
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283 /*7.0*/ HB_SCRIPT_KHOJKI = HB_TAG ('K','h','o','j'), |
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284 /*7.0*/ HB_SCRIPT_KHUDAWADI = HB_TAG ('S','i','n','d'), |
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285 /*7.0*/ HB_SCRIPT_LINEAR_A = HB_TAG ('L','i','n','a'), |
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286 /*7.0*/ HB_SCRIPT_MAHAJANI = HB_TAG ('M','a','h','j'), |
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287 /*7.0*/ HB_SCRIPT_MANICHAEAN = HB_TAG ('M','a','n','i'), |
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288 /*7.0*/ HB_SCRIPT_MENDE_KIKAKUI = HB_TAG ('M','e','n','d'), |
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289 /*7.0*/ HB_SCRIPT_MODI = HB_TAG ('M','o','d','i'), |
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290 /*7.0*/ HB_SCRIPT_MRO = HB_TAG ('M','r','o','o'), |
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291 /*7.0*/ HB_SCRIPT_NABATAEAN = HB_TAG ('N','b','a','t'), |
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292 /*7.0*/ HB_SCRIPT_OLD_NORTH_ARABIAN = HB_TAG ('N','a','r','b'), |
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293 /*7.0*/ HB_SCRIPT_OLD_PERMIC = HB_TAG ('P','e','r','m'), |
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294 /*7.0*/ HB_SCRIPT_PAHAWH_HMONG = HB_TAG ('H','m','n','g'), |
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295 /*7.0*/ HB_SCRIPT_PALMYRENE = HB_TAG ('P','a','l','m'), |
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296 /*7.0*/ HB_SCRIPT_PAU_CIN_HAU = HB_TAG ('P','a','u','c'), |
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297 /*7.0*/ HB_SCRIPT_PSALTER_PAHLAVI = HB_TAG ('P','h','l','p'), |
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298 /*7.0*/ HB_SCRIPT_SIDDHAM = HB_TAG ('S','i','d','d'), |
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299 /*7.0*/ HB_SCRIPT_TIRHUTA = HB_TAG ('T','i','r','h'), |
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300 /*7.0*/ HB_SCRIPT_WARANG_CITI = HB_TAG ('W','a','r','a'), |
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301 |
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302 /*8.0*/ HB_SCRIPT_AHOM = HB_TAG ('A','h','o','m'), |
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303 /*8.0*/ HB_SCRIPT_ANATOLIAN_HIEROGLYPHS = HB_TAG ('H','l','u','w'), |
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304 /*8.0*/ HB_SCRIPT_HATRAN = HB_TAG ('H','a','t','r'), |
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305 /*8.0*/ HB_SCRIPT_MULTANI = HB_TAG ('M','u','l','t'), |
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306 /*8.0*/ HB_SCRIPT_OLD_HUNGARIAN = HB_TAG ('H','u','n','g'), |
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307 /*8.0*/ HB_SCRIPT_SIGNWRITING = HB_TAG ('S','g','n','w'), |
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308 |
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309 /* No script set. */ |
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310 HB_SCRIPT_INVALID = HB_TAG_NONE, |
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311 |
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312 /* Dummy values to ensure any hb_tag_t value can be passed/stored as hb_script_t |
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313 * without risking undefined behavior. Include both a signed and unsigned max, |
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314 * since technically enums are int, and indeed, hb_script_t ends up being signed. |
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315 * See this thread for technicalities: |
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316 * |
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317 * http://lists.freedesktop.org/archives/harfbuzz/2014-March/004150.html |
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318 */ |
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319 _HB_SCRIPT_MAX_VALUE = HB_TAG_MAX, /*< skip >*/ |
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320 _HB_SCRIPT_MAX_VALUE_SIGNED = HB_TAG_MAX_SIGNED /*< skip >*/ |
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321 |
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322 } hb_script_t; |
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323 |
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324 |
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325 /* Script functions */ |
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326 |
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327 hb_script_t |
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328 hb_script_from_iso15924_tag (hb_tag_t tag); |
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329 |
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330 /* sugar for tag_from_string() then script_from_iso15924_tag */ |
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331 /* len=-1 means s is NUL-terminated */ |
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332 hb_script_t |
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333 hb_script_from_string (const char *s, int len); |
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334 |
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335 hb_tag_t |
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336 hb_script_to_iso15924_tag (hb_script_t script); |
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337 |
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338 hb_direction_t |
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339 hb_script_get_horizontal_direction (hb_script_t script); |
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340 |
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341 |
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342 /* User data */ |
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343 |
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344 typedef struct hb_user_data_key_t { |
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345 /*< private >*/ |
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346 char unused; |
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347 } hb_user_data_key_t; |
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348 |
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349 typedef void (*hb_destroy_func_t) (void *user_data); |
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350 |
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351 |
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352 HB_END_DECLS |
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353 |
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354 #endif /* HB_COMMON_H */ |