harfbuzz: check in harfbuzz-ng, add gyp define to use it

third_party/harfbuzz-ng/src/hb-unicode.c

+/*
+ * Copyright (C) 2009  Red Hat, 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
+ * above copyright notice and the following two paragraphs appear in
+ * all copies of this software.
+ *
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Red Hat Author(s): Behdad Esfahbod
+ */
+
+#include "hb-private.h"
+
+#include "hb-unicode-private.h"
+
+HB_BEGIN_DECLS
+
+
+/*
+ * hb_unicode_funcs_t
+ */
+
+static hb_codepoint_t hb_unicode_get_mirroring_nil (hb_codepoint_t unicode) { return unicode; }
+static hb_category_t hb_unicode_get_general_category_nil (hb_codepoint_t unicode HB_UNUSED) { return HB_CATEGORY_OTHER_LETTER; }
+static hb_script_t hb_unicode_get_script_nil (hb_codepoint_t unicode HB_UNUSED) { return HB_SCRIPT_UNKNOWN; }
+static unsigned int hb_unicode_get_combining_class_nil (hb_codepoint_t unicode HB_UNUSED) { return 0; }
+static unsigned int hb_unicode_get_eastasian_width_nil (hb_codepoint_t unicode HB_UNUSED) { return 1; }
+
+hb_unicode_funcs_t _hb_unicode_funcs_nil = {
+  HB_REFERENCE_COUNT_INVALID, /* ref_count */
+  TRUE, /* immutable */
+  {
+    hb_unicode_get_general_category_nil,
+    hb_unicode_get_combining_class_nil,
+    hb_unicode_get_mirroring_nil,
+    hb_unicode_get_script_nil,
+    hb_unicode_get_eastasian_width_nil
+  }
+};
+
+hb_unicode_funcs_t *
+hb_unicode_funcs_create (void)
+{
+  hb_unicode_funcs_t *ufuncs;
+
+  if (!HB_OBJECT_DO_CREATE (hb_unicode_funcs_t, ufuncs))
+    return &_hb_unicode_funcs_nil;
+
+  ufuncs->v = _hb_unicode_funcs_nil.v;
+
+  return ufuncs;
+}
+
+hb_unicode_funcs_t *
+hb_unicode_funcs_reference (hb_unicode_funcs_t *ufuncs)
+{
+  HB_OBJECT_DO_REFERENCE (ufuncs);
+}
+
+unsigned int
+hb_unicode_funcs_get_reference_count (hb_unicode_funcs_t *ufuncs)
+{
+  HB_OBJECT_DO_GET_REFERENCE_COUNT (ufuncs);
+}
+
+void
+hb_unicode_funcs_destroy (hb_unicode_funcs_t *ufuncs)
+{
+  HB_OBJECT_DO_DESTROY (ufuncs);
+
+  free (ufuncs);
+}
+
+hb_unicode_funcs_t *
+hb_unicode_funcs_copy (hb_unicode_funcs_t *other_ufuncs)
+{
+  hb_unicode_funcs_t *ufuncs;
+
+  if (!HB_OBJECT_DO_CREATE (hb_unicode_funcs_t, ufuncs))
+    return &_hb_unicode_funcs_nil;
+
+  ufuncs->v = other_ufuncs->v;
+
+  return ufuncs;
+}
+
+void
+hb_unicode_funcs_make_immutable (hb_unicode_funcs_t *ufuncs)
+{
+  if (HB_OBJECT_IS_INERT (ufuncs))
+    return;
+
+  ufuncs->immutable = TRUE;
+}
+
+hb_bool_t
+hb_unicode_funcs_is_immutable (hb_unicode_funcs_t *ufuncs)
+{
+  return ufuncs->immutable;
+}
+
+
+void
+hb_unicode_funcs_set_mirroring_func (hb_unicode_funcs_t *ufuncs,
+                                     hb_unicode_get_mirroring_func_t mirroring_func)
+{
+  if (ufuncs->immutable)
+    return;
+
+  ufuncs->v.get_mirroring = mirroring_func ? mirroring_func : hb_unicode_get_mirroring_nil;
+}
+
+void
+hb_unicode_funcs_set_general_category_func (hb_unicode_funcs_t *ufuncs,
+                                            hb_unicode_get_general_category_func_t general_category_func)
+{
+  if (ufuncs->immutable)
+    return;
+
+  ufuncs->v.get_general_category = general_category_func ? general_category_func : hb_unicode_get_general_category_nil;
+}
+
+void
+hb_unicode_funcs_set_script_func (hb_unicode_funcs_t *ufuncs,
+                                  hb_unicode_get_script_func_t script_func)
+{
+  if (ufuncs->immutable)
+    return;
+
+  ufuncs->v.get_script = script_func ? script_func : hb_unicode_get_script_nil;
+}
+
+void
+hb_unicode_funcs_set_combining_class_func (hb_unicode_funcs_t *ufuncs,
+                                           hb_unicode_get_combining_class_func_t combining_class_func)
+{
+  if (ufuncs->immutable)
+    return;
+
+  ufuncs->v.get_combining_class = combining_class_func ? combining_class_func : hb_unicode_get_combining_class_nil;
+}
+
+void
+hb_unicode_funcs_set_eastasian_width_func (hb_unicode_funcs_t *ufuncs,
+                                           hb_unicode_get_eastasian_width_func_t eastasian_width_func)
+{
+  if (ufuncs->immutable)
+    return;
+
+  ufuncs->v.get_eastasian_width = eastasian_width_func ? eastasian_width_func : hb_unicode_get_eastasian_width_nil;
+}
+
+
+hb_unicode_get_mirroring_func_t
+hb_unicode_funcs_get_mirroring_func (hb_unicode_funcs_t *ufuncs)
+{
+  return ufuncs->v.get_mirroring;
+}
+
+hb_unicode_get_general_category_func_t
+hb_unicode_funcs_get_general_category_func (hb_unicode_funcs_t *ufuncs)
+{
+  return ufuncs->v.get_general_category;
+}
+
+hb_unicode_get_script_func_t
+hb_unicode_funcs_get_script_func (hb_unicode_funcs_t *ufuncs)
+{
+  return ufuncs->v.get_script;
+}
+
+hb_unicode_get_combining_class_func_t
+hb_unicode_funcs_get_combining_class_func (hb_unicode_funcs_t *ufuncs)
+{
+  return ufuncs->v.get_combining_class;
+}
+
+hb_unicode_get_eastasian_width_func_t
+hb_unicode_funcs_get_eastasian_width_func (hb_unicode_funcs_t *ufuncs)
+{
+  return ufuncs->v.get_eastasian_width;
+}
+
+
+
+hb_codepoint_t
+hb_unicode_get_mirroring (hb_unicode_funcs_t *ufuncs,
+                          hb_codepoint_t unicode)
+{
+  return ufuncs->v.get_mirroring (unicode);
+}
+
+hb_category_t
+hb_unicode_get_general_category (hb_unicode_funcs_t *ufuncs,
+                                 hb_codepoint_t unicode)
+{
+  return ufuncs->v.get_general_category (unicode);
+}
+
+hb_script_t
+hb_unicode_get_script (hb_unicode_funcs_t *ufuncs,
+                       hb_codepoint_t unicode)
+{
+  return ufuncs->v.get_script (unicode);
+}
+
+unsigned int
+hb_unicode_get_combining_class (hb_unicode_funcs_t *ufuncs,
+                                hb_codepoint_t unicode)
+{
+  return ufuncs->v.get_combining_class (unicode);
+}
+
+unsigned int
+hb_unicode_get_eastasian_width (hb_unicode_funcs_t *ufuncs,
+                                hb_codepoint_t unicode)
+{
+  return ufuncs->v.get_eastasian_width (unicode);
+}
+
+
+
+#define LTR HB_DIRECTION_LTR
+#define RTL HB_DIRECTION_RTL
+const hb_direction_t horiz_dir[] =
+{
+  LTR,  /* Zyyy */
+  LTR,  /* Qaai */
+  RTL,  /* Arab */
+  LTR,  /* Armn */
+  LTR,  /* Beng */
+  LTR,  /* Bopo */
+  LTR,  /* Cher */
+  LTR,  /* Qaac */
+  LTR,  /* Cyrl (Cyrs) */
+  LTR,  /* Dsrt */
+  LTR,  /* Deva */
+  LTR,  /* Ethi */
+  LTR,  /* Geor (Geon, Geoa) */
+  LTR,  /* Goth */
+  LTR,  /* Grek */
+  LTR,  /* Gujr */
+  LTR,  /* Guru */
+  LTR,  /* Hani */
+  LTR,  /* Hang */
+  RTL,  /* Hebr */
+  LTR,  /* Hira */
+  LTR,  /* Knda */
+  LTR,  /* Kana */
+  LTR,  /* Khmr */
+  LTR,  /* Laoo */
+  LTR,  /* Latn (Latf, Latg) */
+  LTR,  /* Mlym */
+  LTR,  /* Mong */
+  LTR,  /* Mymr */
+  LTR,  /* Ogam */
+  LTR,  /* Ital */
+  LTR,  /* Orya */
+  LTR,  /* Runr */
+  LTR,  /* Sinh */
+  RTL,  /* Syrc (Syrj, Syrn, Syre) */
+  LTR,  /* Taml */
+  LTR,  /* Telu */
+  RTL,  /* Thaa */
+  LTR,  /* Thai */
+  LTR,  /* Tibt */
+  LTR,  /* Cans */
+  LTR,  /* Yiii */
+  LTR,  /* Tglg */
+  LTR,  /* Hano */
+  LTR,  /* Buhd */
+  LTR,  /* Tagb */
+
+  /* Unicode-4.0 additions */
+  LTR,  /* Brai */
+  RTL,  /* Cprt */
+  LTR,  /* Limb */
+  LTR,  /* Osma */
+  LTR,  /* Shaw */
+  LTR,  /* Linb */
+  LTR,  /* Tale */
+  LTR,  /* Ugar */
+
+  /* Unicode-4.1 additions */
+  LTR,  /* Talu */
+  LTR,  /* Bugi */
+  LTR,  /* Glag */
+  LTR,  /* Tfng */
+  LTR,  /* Sylo */
+  LTR,  /* Xpeo */
+  LTR,  /* Khar */
+
+  /* Unicode-5.0 additions */
+  LTR,  /* Zzzz */
+  LTR,  /* Bali */
+  LTR,  /* Xsux */
+  RTL,  /* Phnx */
+  LTR,  /* Phag */
+  RTL,  /* Nkoo */
+
+  /* Unicode-5.1 additions */
+  LTR,  /* Kali */
+  LTR,  /* Lepc */
+  LTR,  /* Rjng */
+  LTR,  /* Sund */
+  LTR,  /* Saur */
+  LTR,  /* Cham */
+  LTR,  /* Olck */
+  LTR,  /* Vaii */
+  LTR,  /* Cari */
+  LTR,  /* Lyci */
+  LTR,  /* Lydi */
+
+  /* Unicode-5.2 additions */
+  RTL,  /* Avst */
+  LTR,  /* Bamu */
+  LTR,  /* Egyp */
+  RTL,  /* Armi */
+  RTL,  /* Phli */
+  RTL,  /* Prti */
+  LTR,  /* Java */
+  LTR,  /* Kthi */
+  LTR,  /* Lisu */
+  LTR,  /* Mtei */
+  RTL,  /* Sarb */
+  RTL,  /* Orkh */
+  RTL,  /* Samr */
+  LTR,  /* Lana */
+  LTR,  /* Tavt */
+
+  /* Unicode-6.0 additions */
+  LTR,  /* Batk */
+  LTR,  /* Brah */
+  RTL   /* Mand */
+};
+#undef LTR
+#undef RTL
+
+hb_direction_t
+_hb_script_get_horizontal_direction (hb_script_t script)
+{
+  if (unlikely ((unsigned int) script >= ARRAY_LENGTH (horiz_dir)))
+    return HB_DIRECTION_LTR;
+
+  return horiz_dir[script];
+}
+
+
+HB_END_DECLS