Index: third_party/harfbuzz-ng/src/hb-unicode.cc |
diff --git a/third_party/harfbuzz-ng/src/hb-unicode.cc b/third_party/harfbuzz-ng/src/hb-unicode.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..4b285c5e1ca4ae03bd55876becf98d86293787ae |
--- /dev/null |
+++ b/third_party/harfbuzz-ng/src/hb-unicode.cc |
@@ -0,0 +1,273 @@ |
+/* |
+ * Copyright © 2009 Red Hat, Inc. |
+ * Copyright © 2011 Codethink Limited |
+ * Copyright © 2010,2011 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 |
+ * 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 |
+ * Codethink Author(s): Ryan Lortie |
+ * Google Author(s): Behdad Esfahbod |
+ */ |
+ |
+#include "hb-private.hh" |
+ |
+#include "hb-unicode-private.hh" |
+ |
+ |
+ |
+/* |
+ * hb_unicode_funcs_t |
+ */ |
+ |
+static unsigned int |
+hb_unicode_combining_class_nil (hb_unicode_funcs_t *ufuncs HB_UNUSED, |
+ hb_codepoint_t unicode HB_UNUSED, |
+ void *user_data HB_UNUSED) |
+{ |
+ return 0; |
+} |
+ |
+static unsigned int |
+hb_unicode_eastasian_width_nil (hb_unicode_funcs_t *ufuncs HB_UNUSED, |
+ hb_codepoint_t unicode HB_UNUSED, |
+ void *user_data HB_UNUSED) |
+{ |
+ return 1; |
+} |
+ |
+static hb_unicode_general_category_t |
+hb_unicode_general_category_nil (hb_unicode_funcs_t *ufuncs HB_UNUSED, |
+ hb_codepoint_t unicode HB_UNUSED, |
+ void *user_data HB_UNUSED) |
+{ |
+ return HB_UNICODE_GENERAL_CATEGORY_OTHER_LETTER; |
+} |
+ |
+static hb_codepoint_t |
+hb_unicode_mirroring_nil (hb_unicode_funcs_t *ufuncs HB_UNUSED, |
+ hb_codepoint_t unicode HB_UNUSED, |
+ void *user_data HB_UNUSED) |
+{ |
+ return unicode; |
+} |
+ |
+static hb_script_t |
+hb_unicode_script_nil (hb_unicode_funcs_t *ufuncs HB_UNUSED, |
+ hb_codepoint_t unicode HB_UNUSED, |
+ void *user_data HB_UNUSED) |
+{ |
+ return HB_SCRIPT_UNKNOWN; |
+} |
+ |
+static hb_bool_t |
+hb_unicode_compose_nil (hb_unicode_funcs_t *ufuncs HB_UNUSED, |
+ hb_codepoint_t a HB_UNUSED, |
+ hb_codepoint_t b HB_UNUSED, |
+ hb_codepoint_t *ab HB_UNUSED, |
+ void *user_data HB_UNUSED) |
+{ |
+ /* TODO handle Hangul jamo here? */ |
+ return FALSE; |
+} |
+ |
+static hb_bool_t |
+hb_unicode_decompose_nil (hb_unicode_funcs_t *ufuncs HB_UNUSED, |
+ hb_codepoint_t ab HB_UNUSED, |
+ hb_codepoint_t *a HB_UNUSED, |
+ hb_codepoint_t *b HB_UNUSED, |
+ void *user_data HB_UNUSED) |
+{ |
+ /* TODO handle Hangul jamo here? */ |
+ return FALSE; |
+} |
+ |
+ |
+hb_unicode_funcs_t _hb_unicode_funcs_nil = { |
+ HB_OBJECT_HEADER_STATIC, |
+ |
+ NULL, /* parent */ |
+ TRUE, /* immutable */ |
+ { |
+#define HB_UNICODE_FUNC_IMPLEMENT(name) hb_unicode_##name##_nil, |
+ HB_UNICODE_FUNCS_IMPLEMENT_CALLBACKS |
+#undef HB_UNICODE_FUNC_IMPLEMENT |
+ } |
+}; |
+ |
+ |
+hb_unicode_funcs_t * |
+hb_unicode_funcs_get_default (void) |
+{ |
+ return &_hb_unicode_funcs_default; |
+} |
+ |
+hb_unicode_funcs_t * |
+hb_unicode_funcs_create (hb_unicode_funcs_t *parent) |
+{ |
+ hb_unicode_funcs_t *ufuncs; |
+ |
+ if (!(ufuncs = hb_object_create<hb_unicode_funcs_t> ())) |
+ return &_hb_unicode_funcs_nil; |
+ |
+ if (!parent) |
+ parent = &_hb_unicode_funcs_nil; |
+ |
+ hb_unicode_funcs_make_immutable (parent); |
+ ufuncs->parent = hb_unicode_funcs_reference (parent); |
+ |
+ ufuncs->func = parent->func; |
+ |
+ /* We can safely copy user_data from parent since we hold a reference |
+ * onto it and it's immutable. We should not copy the destroy notifiers |
+ * though. */ |
+ ufuncs->user_data = parent->user_data; |
+ |
+ return ufuncs; |
+} |
+ |
+hb_unicode_funcs_t * |
+hb_unicode_funcs_get_empty (void) |
+{ |
+ return &_hb_unicode_funcs_nil; |
+} |
+ |
+hb_unicode_funcs_t * |
+hb_unicode_funcs_reference (hb_unicode_funcs_t *ufuncs) |
+{ |
+ return hb_object_reference (ufuncs); |
+} |
+ |
+void |
+hb_unicode_funcs_destroy (hb_unicode_funcs_t *ufuncs) |
+{ |
+ if (!hb_object_destroy (ufuncs)) return; |
+ |
+#define HB_UNICODE_FUNC_IMPLEMENT(name) \ |
+ if (ufuncs->destroy.name) ufuncs->destroy.name (ufuncs->user_data.name); |
+ HB_UNICODE_FUNCS_IMPLEMENT_CALLBACKS |
+#undef HB_UNICODE_FUNC_IMPLEMENT |
+ |
+ hb_unicode_funcs_destroy (ufuncs->parent); |
+ |
+ free (ufuncs); |
+} |
+ |
+hb_bool_t |
+hb_unicode_funcs_set_user_data (hb_unicode_funcs_t *ufuncs, |
+ hb_user_data_key_t *key, |
+ void * data, |
+ hb_destroy_func_t destroy, |
+ hb_bool_t replace) |
+{ |
+ return hb_object_set_user_data (ufuncs, key, data, destroy, replace); |
+} |
+ |
+void * |
+hb_unicode_funcs_get_user_data (hb_unicode_funcs_t *ufuncs, |
+ hb_user_data_key_t *key) |
+{ |
+ return hb_object_get_user_data (ufuncs, key); |
+} |
+ |
+ |
+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; |
+} |
+ |
+hb_unicode_funcs_t * |
+hb_unicode_funcs_get_parent (hb_unicode_funcs_t *ufuncs) |
+{ |
+ return ufuncs->parent ? ufuncs->parent : &_hb_unicode_funcs_nil; |
+} |
+ |
+ |
+#define HB_UNICODE_FUNC_IMPLEMENT(name) \ |
+ \ |
+void \ |
+hb_unicode_funcs_set_##name##_func (hb_unicode_funcs_t *ufuncs, \ |
+ hb_unicode_##name##_func_t func, \ |
+ void *user_data, \ |
+ hb_destroy_func_t destroy) \ |
+{ \ |
+ if (ufuncs->immutable) \ |
+ return; \ |
+ \ |
+ if (ufuncs->destroy.name) \ |
+ ufuncs->destroy.name (ufuncs->user_data.name); \ |
+ \ |
+ if (func) { \ |
+ ufuncs->func.name = func; \ |
+ ufuncs->user_data.name = user_data; \ |
+ ufuncs->destroy.name = destroy; \ |
+ } else { \ |
+ ufuncs->func.name = ufuncs->parent->func.name; \ |
+ ufuncs->user_data.name = ufuncs->parent->user_data.name; \ |
+ ufuncs->destroy.name = NULL; \ |
+ } \ |
+} |
+ |
+ HB_UNICODE_FUNCS_IMPLEMENT_CALLBACKS |
+#undef HB_UNICODE_FUNC_IMPLEMENT |
+ |
+ |
+#define HB_UNICODE_FUNC_IMPLEMENT(return_type, name) \ |
+ \ |
+return_type \ |
+hb_unicode_##name (hb_unicode_funcs_t *ufuncs, \ |
+ hb_codepoint_t unicode) \ |
+{ \ |
+ return ufuncs->func.name (ufuncs, unicode, ufuncs->user_data.name); \ |
+} |
+ HB_UNICODE_FUNCS_IMPLEMENT_CALLBACKS_SIMPLE |
+#undef HB_UNICODE_FUNC_IMPLEMENT |
+ |
+hb_bool_t |
+hb_unicode_compose (hb_unicode_funcs_t *ufuncs, |
+ hb_codepoint_t a, |
+ hb_codepoint_t b, |
+ hb_codepoint_t *ab) |
+{ |
+ *ab = 0; |
+ return ufuncs->func.compose (ufuncs, a, b, ab, ufuncs->user_data.compose); |
+} |
+ |
+hb_bool_t |
+hb_unicode_decompose (hb_unicode_funcs_t *ufuncs, |
+ hb_codepoint_t ab, |
+ hb_codepoint_t *a, |
+ hb_codepoint_t *b) |
+{ |
+ *a = ab; *b = 0; |
+ return ufuncs->func.decompose (ufuncs, ab, a, b, ufuncs->user_data.decompose); |
+} |
+ |