hb-glib.c

   1 // C99 port from c++ is protected by a GNU Lesser GPLv3
   2 // Copyright © 2013 Sylvain BERTRAND <sylvain.bertrand@gmail.com>
   3 //                                   <sylware@legeek.net>
   4 #include "hb.h"
   5 #include "hb-private.h"
   6 #include "hb-atomic-private.h"
   7 #include "hb-glib.h"
   8 #include "hb-unicode-private.h"
   9
  10 GUnicodeScript
  11 hb_glib_script_from_script(hb_script_t script)
  12 {
  13   return g_unicode_script_from_iso15924(script);
  14 }
  15
  16 hb_script_t
  17 hb_glib_script_to_script(GUnicodeScript script)
  18 {
  19   return (hb_script_t)g_unicode_script_to_iso15924(script);
  20 }
  21
  22 static hb_unicode_combining_class_t
  23 hb_glib_unicode_combining_class(hb_unicode_funcs_t *ufuncs HB_UNUSED,
  24                                 hb_codepoint_t unicode,
  25                                 void *user_data HB_UNUSED)
  26
  27 {
  28   return (hb_unicode_combining_class_t)g_unichar_combining_class(unicode);
  29 }
  30
  31 static unsigned int
  32 hb_glib_unicode_eastasian_width(hb_unicode_funcs_t *ufuncs HB_UNUSED,
  33                                 hb_codepoint_t unicode,
  34                                 void *user_data HB_UNUSED)
  35 {
  36   return g_unichar_iswide(unicode) ? 2 : 1;
  37 }
  38
  39 static hb_unicode_general_category_t
  40 hb_glib_unicode_general_category(hb_unicode_funcs_t *ufuncs HB_UNUSED,
  41                                  hb_codepoint_t unicode,
  42                                  void *user_data HB_UNUSED)
  43
  44 {
  45   //hb_unicode_general_category_t and GUnicodeType are identical
  46   return (hb_unicode_general_category_t)g_unichar_type(unicode);
  47 }
  48
  49 static hb_codepoint_t
  50 hb_glib_unicode_mirroring(hb_unicode_funcs_t *ufuncs HB_UNUSED,
  51                           hb_codepoint_t unicode,
  52                           void *user_data HB_UNUSED)
  53 {
  54   g_unichar_get_mirror_char(unicode, &unicode);
  55   return unicode;
  56 }
  57
  58 static hb_script_t
  59 hb_glib_unicode_script(hb_unicode_funcs_t *ufuncs HB_UNUSED,
  60                        hb_codepoint_t unicode,
  61                        void *user_data HB_UNUSED)
  62 {
  63   return hb_glib_script_to_script(g_unichar_get_script(unicode));
  64 }
  65
  66 static hb_bool_t
  67 hb_glib_unicode_compose(hb_unicode_funcs_t *ufuncs HB_UNUSED,
  68                         hb_codepoint_t a,
  69                         hb_codepoint_t b,
  70                         hb_codepoint_t *ab,
  71                         void *user_data HB_UNUSED)
  72 {
  73   return g_unichar_compose(a, b, ab);
  74 }
  75
  76 static hb_bool_t
  77 hb_glib_unicode_decompose(hb_unicode_funcs_t *ufuncs HB_UNUSED,
  78                           hb_codepoint_t ab,
  79                           hb_codepoint_t *a,
  80                           hb_codepoint_t *b,
  81                           void *user_data HB_UNUSED)
  82 {
  83   return g_unichar_decompose(ab, a, b);
  84 }
  85
  86 static unsigned int
  87 hb_glib_unicode_decompose_compatibility(hb_unicode_funcs_t *ufuncs HB_UNUSED,
  88                                         hb_codepoint_t u,
  89                                         hb_codepoint_t *decomposed,
  90                                         void *user_data HB_UNUSED)
  91 {
  92   return g_unichar_fully_decompose(u,
  93                                    TRUE,
  94                                    decomposed,
  95                                    HB_UNICODE_MAX_DECOMPOSITION_LEN);
  96 }
  97
  98 static hb_unicode_funcs_t hb_glib_unicode_funcs = {
  99   REF_CNT_INVALID_VAL,//ref_cnt
 100   NULL,//parent
 101   TRUE,//immutable
 102   {//func
 103     hb_glib_unicode_combining_class,
 104     hb_glib_unicode_eastasian_width,
 105     hb_glib_unicode_general_category,
 106     hb_glib_unicode_mirroring,
 107     hb_glib_unicode_script,
 108     hb_glib_unicode_compose,
 109     hb_glib_unicode_decompose,
 110     hb_glib_unicode_decompose_compatibility
 111   },
 112   {//user_data
 113     NULL,//combining_class
 114     NULL,//eastasian_width
 115     NULL,//general_category
 116     NULL,//mirroring
 117     NULL,//script
 118     NULL,//compose
 119     NULL,//decompose
 120     NULL//decompose_compatibility
 121   },
 122   {//destroy
 123     NULL,//combining_class
 124     NULL,//eastasian_width
 125     NULL,//general_category
 126     NULL,//mirroring
 127     NULL,//script
 128     NULL,//compose
 129     NULL,//decompose
 130     NULL//decompose_compatibility
 131   }
 132 };
 133
 134 hb_unicode_funcs_t *
 135 hb_glib_get_unicode_funcs(void)
 136 {
 137   return &hb_glib_unicode_funcs;
 138 }