Roll HarfBuzz to 1.1.1

third_party/harfbuzz-ng/src/hb-unicode-private.hh

 /*
  * Copyright © 2009  Red Hat, Inc.
  * Copyright © 2011  Codethink Limited
  * Copyright © 2010,2011,2012  Google, Inc.
  *
  *  This is part of HarfBuzz, a text shaping library.
  *
  * Permission is hereby granted, without written agreement and without
  * license or royalty fees, to use, copy, modify, and distribute this
  * software and its documentation for any purpose, provided that the
@@ skipping 181 matching lines @@
       /* Other planes */
       switch (plane) {
         case 0x01: return hb_in_ranges (ch, 0x1BCA0u, 0x1BCA3u,
                                             0x1D173u, 0x1D17Au);
         case 0x0E: return hb_in_range (ch, 0xE0000u, 0xE0FFFu);
         default: return false;
       }
     }
   }
 
+  /* Space estimates based on:
+   * http://www.unicode.org/charts/PDF/U2000.pdf
+   * https://www.microsoft.com/typography/developers/fdsspec/spaces.aspx
+   */
+  enum space_t {
+    NOT_SPACE = 0,
+    SPACE_EM   = 1,
+    SPACE_EM_2 = 2,
+    SPACE_EM_3 = 3,
+    SPACE_EM_4 = 4,
+    SPACE_EM_5 = 5,
+    SPACE_EM_6 = 6,
+    SPACE_EM_16 = 16,
+    SPACE_4_EM_18,      /* 4/18th of an EM! */
+    SPACE,
+    SPACE_FIGURE,
+    SPACE_PUNCTUATION,
+    SPACE_NARROW,
+  };
+  static inline space_t
+  space_fallback_type (hb_codepoint_t u)
+  {
+    switch (u)
+    {
+      /* All GC=Zs chars that can use a fallback. */
+      default:      return NOT_SPACE;   /* Shouldn't happen. */
+      case 0x0020u: return SPACE;       /* U+0020 SPACE */
+      case 0x00A0u: return SPACE;       /* U+00A0 NO-BREAK SPACE */
+      case 0x2000u: return SPACE_EM_2;  /* U+2000 EN QUAD */
+      case 0x2001u: return SPACE_EM;    /* U+2001 EM QUAD */
+      case 0x2002u: return SPACE_EM_2;  /* U+2002 EN SPACE */
+      case 0x2003u: return SPACE_EM;    /* U+2003 EM SPACE */
+      case 0x2004u: return SPACE_EM_3;  /* U+2004 THREE-PER-EM SPACE */
+      case 0x2005u: return SPACE_EM_4;  /* U+2005 FOUR-PER-EM SPACE */
+      case 0x2006u: return SPACE_EM_6;  /* U+2006 SIX-PER-EM SPACE */
+      case 0x2007u: return SPACE_FIGURE;        /* U+2007 FIGURE SPACE */
+      case 0x2008u: return SPACE_PUNCTUATION;   /* U+2008 PUNCTUATION SPACE */
+      case 0x2009u: return SPACE_EM_5;          /* U+2009 THIN SPACE */
+      case 0x200Au: return SPACE_EM_16;         /* U+200A HAIR SPACE */
+      case 0x202Fu: return SPACE_NARROW;        /* U+202F NARROW NO-BREAK SPACE */
+      case 0x205Fu: return SPACE_4_EM_18;       /* U+205F MEDIUM MATHEMATICAL SPACE */
+      case 0x3000u: return SPACE_EM;            /* U+3000 IDEOGRAPHIC SPACE */
+    }
+  }
 
   struct {
 #define HB_UNICODE_FUNC_IMPLEMENT(name) hb_unicode_##name##_func_t name;
     HB_UNICODE_FUNCS_IMPLEMENT_CALLBACKS
 #undef HB_UNICODE_FUNC_IMPLEMENT
   } func;
 
   struct {
 #define HB_UNICODE_FUNC_IMPLEMENT(name) void *name;
     HB_UNICODE_FUNCS_IMPLEMENT_CALLBACKS
@@ skipping 94 matching lines @@
 
 
 /* Misc */
 
 #define HB_UNICODE_GENERAL_CATEGORY_IS_MARK(gen_cat) \
         (FLAG_SAFE (gen_cat) & \
          (FLAG (HB_UNICODE_GENERAL_CATEGORY_SPACING_MARK) | \
           FLAG (HB_UNICODE_GENERAL_CATEGORY_ENCLOSING_MARK) | \
           FLAG (HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK)))
 
+#define HB_UNICODE_GENERAL_CATEGORY_IS_NON_ENCLOSING_MARK(gen_cat) \
+        (FLAG_SAFE (gen_cat) & \
+         (FLAG (HB_UNICODE_GENERAL_CATEGORY_SPACING_MARK) | \
+          FLAG (HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK)))
 
 #endif /* HB_UNICODE_PRIVATE_HH */