diff options
Diffstat (limited to 'src/3rdparty/harfbuzz-ng/src/hb-unicode.cc')
| -rw-r--r-- | src/3rdparty/harfbuzz-ng/src/hb-unicode.cc | 268 |
1 files changed, 165 insertions, 103 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/hb-unicode.cc b/src/3rdparty/harfbuzz-ng/src/hb-unicode.cc index 726baeb0f1..aa2735bedb 100644 --- a/src/3rdparty/harfbuzz-ng/src/hb-unicode.cc +++ b/src/3rdparty/harfbuzz-ng/src/hb-unicode.cc @@ -28,11 +28,30 @@ * Google Author(s): Behdad Esfahbod */ -#include "hb-private.hh" +#include "hb.hh" -#include "hb-unicode-private.hh" +#include "hb-unicode.hh" +/** + * SECTION: hb-unicode + * @title: hb-unicode + * @short_description: Unicode character property access + * @include: hb.h + * + * Unicode functions are used to access Unicode character properties. + * With these functions, client programs can query various properties from + * the Unicode Character Database for any code point, such as General + * Category (gc), Script (sc), Canonical Combining Class (ccc), etc. + * + * Client programs can optionally pass in their own Unicode functions + * that implement the same queries. The set of functions available is + * defined by the virtual methods in #hb_unicode_funcs_t. + * + * HarfBuzz provides built-in default functions for each method in + * #hb_unicode_funcs_t. + **/ + /* * hb_unicode_funcs_t @@ -46,6 +65,7 @@ hb_unicode_combining_class_nil (hb_unicode_funcs_t *ufuncs HB_UNUSED, return HB_UNICODE_COMBINING_CLASS_NOT_REORDERED; } +#ifndef HB_DISABLE_DEPRECATED static unsigned int hb_unicode_eastasian_width_nil (hb_unicode_funcs_t *ufuncs HB_UNUSED, hb_codepoint_t unicode HB_UNUSED, @@ -53,6 +73,7 @@ hb_unicode_eastasian_width_nil (hb_unicode_funcs_t *ufuncs HB_UNUSED, { return 1; } +#endif static hb_unicode_general_category_t hb_unicode_general_category_nil (hb_unicode_funcs_t *ufuncs HB_UNUSED, @@ -64,7 +85,7 @@ hb_unicode_general_category_nil (hb_unicode_funcs_t *ufuncs HB_UNUSED, static hb_codepoint_t hb_unicode_mirroring_nil (hb_unicode_funcs_t *ufuncs HB_UNUSED, - hb_codepoint_t unicode HB_UNUSED, + hb_codepoint_t unicode, void *user_data HB_UNUSED) { return unicode; @@ -99,6 +120,7 @@ hb_unicode_decompose_nil (hb_unicode_funcs_t *ufuncs HB_UNUSED, } +#ifndef HB_DISABLE_DEPRECATED static unsigned int hb_unicode_decompose_compatibility_nil (hb_unicode_funcs_t *ufuncs HB_UNUSED, hb_codepoint_t u HB_UNUSED, @@ -107,56 +129,52 @@ hb_unicode_decompose_compatibility_nil (hb_unicode_funcs_t *ufuncs HB_UNUSED { return 0; } +#endif +#if !defined(HB_NO_UNICODE_FUNCS) && defined(HAVE_GLIB) +#include "hb-glib.h" +#endif +#if !defined(HB_NO_UNICODE_FUNCS) && defined(HAVE_ICU) && defined(HAVE_ICU_BUILTIN) +#include "hb-icu.h" +#endif -#define HB_UNICODE_FUNCS_IMPLEMENT_SET \ - HB_UNICODE_FUNCS_IMPLEMENT (glib) \ - HB_UNICODE_FUNCS_IMPLEMENT (icu) \ - HB_UNICODE_FUNCS_IMPLEMENT (ucdn) \ - HB_UNICODE_FUNCS_IMPLEMENT (nil) \ - /* ^--- Add new callbacks before nil */ - -#define hb_nil_get_unicode_funcs hb_unicode_funcs_get_empty - -/* Prototype them all */ -#define HB_UNICODE_FUNCS_IMPLEMENT(set) \ -extern "C" hb_unicode_funcs_t *hb_##set##_get_unicode_funcs (void); -HB_UNICODE_FUNCS_IMPLEMENT_SET -#undef HB_UNICODE_FUNCS_IMPLEMENT - - +/** + * hb_unicode_funcs_get_default: + * + * Fetches a pointer to the default Unicode-functions structure that is used + * when no functions are explicitly set on #hb_buffer_t. + * + * Return value: (transfer none): a pointer to the #hb_unicode_funcs_t Unicode-functions structure + * + * Since: 0.9.2 + **/ hb_unicode_funcs_t * -hb_unicode_funcs_get_default (void) +hb_unicode_funcs_get_default () { -#define HB_UNICODE_FUNCS_IMPLEMENT(set) \ - return hb_##set##_get_unicode_funcs (); - -#if defined(HAVE_UCDN) - HB_UNICODE_FUNCS_IMPLEMENT(ucdn) -#elif defined(HAVE_GLIB) - HB_UNICODE_FUNCS_IMPLEMENT(glib) -#elif defined(HAVE_ICU) && defined(HAVE_ICU_BUILTIN) - HB_UNICODE_FUNCS_IMPLEMENT(icu) +#if !defined(HB_NO_UNICODE_FUNCS) && !defined(HB_NO_UCD) + return hb_ucd_get_unicode_funcs (); +#elif !defined(HB_NO_UNICODE_FUNCS) && defined(HAVE_GLIB) + return hb_glib_get_unicode_funcs (); +#elif !defined(HB_NO_UNICODE_FUNCS) && defined(HAVE_ICU) && defined(HAVE_ICU_BUILTIN) + return hb_icu_get_unicode_funcs (); #else #define HB_UNICODE_FUNCS_NIL 1 - HB_UNICODE_FUNCS_IMPLEMENT(nil) + return hb_unicode_funcs_get_empty (); #endif - -#undef HB_UNICODE_FUNCS_IMPLEMENT } #if !defined(HB_NO_UNICODE_FUNCS) && defined(HB_UNICODE_FUNCS_NIL) #error "Could not find any Unicode functions implementation, you have to provide your own" -#error "Consider building hb-ucdn.c. If you absolutely want to build without any, check the code." +#error "Consider building hb-ucd.cc. If you absolutely want to build without any, define HB_NO_UNICODE_FUNCS." #endif /** - * hb_unicode_funcs_create: (Xconstructor) - * @parent: (nullable): + * hb_unicode_funcs_create: + * @parent: (nullable): Parent Unicode-functions structure * - * + * Creates a new #hb_unicode_funcs_t structure of Unicode functions. * - * Return value: (transfer full): + * Return value: (transfer full): The Unicode-functions structure * * Since: 0.9.2 **/ @@ -185,11 +203,11 @@ hb_unicode_funcs_create (hb_unicode_funcs_t *parent) } -const hb_unicode_funcs_t _hb_unicode_funcs_nil = { +DEFINE_NULL_INSTANCE (hb_unicode_funcs_t) = +{ HB_OBJECT_HEADER_STATIC, nullptr, /* parent */ - true, /* immutable */ { #define HB_UNICODE_FUNC_IMPLEMENT(name) hb_unicode_##name##_nil, HB_UNICODE_FUNCS_IMPLEMENT_CALLBACKS @@ -200,25 +218,25 @@ const hb_unicode_funcs_t _hb_unicode_funcs_nil = { /** * hb_unicode_funcs_get_empty: * - * + * Fetches the singleton empty Unicode-functions structure. * - * Return value: (transfer full): + * Return value: (transfer full): The empty Unicode-functions structure * * Since: 0.9.2 **/ hb_unicode_funcs_t * -hb_unicode_funcs_get_empty (void) +hb_unicode_funcs_get_empty () { - return const_cast<hb_unicode_funcs_t *> (&_hb_unicode_funcs_nil); + return const_cast<hb_unicode_funcs_t *> (&Null (hb_unicode_funcs_t)); } /** * hb_unicode_funcs_reference: (skip) - * @ufuncs: Unicode functions. + * @ufuncs: The Unicode-functions structure * - * + * Increases the reference count on a Unicode-functions structure. * - * Return value: (transfer full): + * Return value: (transfer full): The Unicode-functions structure * * Since: 0.9.2 **/ @@ -230,9 +248,11 @@ hb_unicode_funcs_reference (hb_unicode_funcs_t *ufuncs) /** * hb_unicode_funcs_destroy: (skip) - * @ufuncs: Unicode functions. + * @ufuncs: The Unicode-functions structure * - * + * Decreases the reference count on a Unicode-functions structure. When + * the reference count reaches zero, the Unicode-functions structure is + * destroyed, freeing all memory. * * Since: 0.9.2 **/ @@ -248,28 +268,28 @@ hb_unicode_funcs_destroy (hb_unicode_funcs_t *ufuncs) hb_unicode_funcs_destroy (ufuncs->parent); - free (ufuncs); + hb_free (ufuncs); } /** * hb_unicode_funcs_set_user_data: (skip) - * @ufuncs: Unicode functions. - * @key: - * @data: - * @destroy: - * @replace: + * @ufuncs: The Unicode-functions structure + * @key: The user-data key + * @data: A pointer to the user data + * @destroy: (nullable): A callback to call when @data is not needed anymore + * @replace: Whether to replace an existing data with the same key * - * + * Attaches a user-data key/data pair to the specified Unicode-functions structure. * - * Return value: + * Return value: `true` if success, `false` otherwise * * Since: 0.9.2 **/ 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_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); @@ -277,18 +297,19 @@ hb_unicode_funcs_set_user_data (hb_unicode_funcs_t *ufuncs, /** * hb_unicode_funcs_get_user_data: (skip) - * @ufuncs: Unicode functions. - * @key: + * @ufuncs: The Unicode-functions structure + * @key: The user-data key to query * - * + * Fetches the user-data associated with the specified key, + * attached to the specified Unicode-functions structure. * - * Return value: (transfer none): + * Return value: (transfer none): A pointer to the user data * * Since: 0.9.2 **/ void * -hb_unicode_funcs_get_user_data (hb_unicode_funcs_t *ufuncs, - hb_user_data_key_t *key) +hb_unicode_funcs_get_user_data (const hb_unicode_funcs_t *ufuncs, + hb_user_data_key_t *key) { return hb_object_get_user_data (ufuncs, key); } @@ -296,44 +317,47 @@ hb_unicode_funcs_get_user_data (hb_unicode_funcs_t *ufuncs, /** * hb_unicode_funcs_make_immutable: - * @ufuncs: Unicode functions. + * @ufuncs: The Unicode-functions structure * - * + * Makes the specified Unicode-functions structure + * immutable. * * Since: 0.9.2 **/ void hb_unicode_funcs_make_immutable (hb_unicode_funcs_t *ufuncs) { - if (unlikely (hb_object_is_inert (ufuncs))) + if (hb_object_is_immutable (ufuncs)) return; - ufuncs->immutable = true; + hb_object_make_immutable (ufuncs); } /** * hb_unicode_funcs_is_immutable: - * @ufuncs: Unicode functions. + * @ufuncs: The Unicode-functions structure * - * + * Tests whether the specified Unicode-functions structure + * is immutable. * - * Return value: + * Return value: `true` if @ufuncs is immutable, `false` otherwise * * Since: 0.9.2 **/ hb_bool_t hb_unicode_funcs_is_immutable (hb_unicode_funcs_t *ufuncs) { - return ufuncs->immutable; + return hb_object_is_immutable (ufuncs); } /** * hb_unicode_funcs_get_parent: - * @ufuncs: Unicode functions. + * @ufuncs: The Unicode-functions structure * - * + * Fetches the parent of the Unicode-functions structure + * @ufuncs. * - * Return value: + * Return value: The parent Unicode-functions structure * * Since: 0.9.2 **/ @@ -352,21 +376,31 @@ hb_unicode_funcs_set_##name##_func (hb_unicode_funcs_t *ufuncs, \ void *user_data, \ hb_destroy_func_t destroy) \ { \ - if (ufuncs->immutable) \ - return; \ + if (hb_object_is_immutable (ufuncs)) \ + goto fail; \ + \ + if (!func) \ + { \ + if (destroy) \ + destroy (user_data); \ + destroy = nullptr; \ + user_data = ufuncs->parent->user_data.name; \ + } \ \ if (ufuncs->destroy.name) \ ufuncs->destroy.name (ufuncs->user_data.name); \ \ - if (func) { \ + if (func) \ ufuncs->func.name = func; \ - ufuncs->user_data.name = user_data; \ - ufuncs->destroy.name = destroy; \ - } else { \ + else \ ufuncs->func.name = ufuncs->parent->func.name; \ - ufuncs->user_data.name = ufuncs->parent->user_data.name; \ - ufuncs->destroy.name = nullptr; \ - } \ + ufuncs->user_data.name = user_data; \ + ufuncs->destroy.name = destroy; \ + return; \ + \ +fail: \ + if (destroy) \ + destroy (user_data); \ } HB_UNICODE_FUNCS_IMPLEMENT_CALLBACKS @@ -386,14 +420,18 @@ HB_UNICODE_FUNCS_IMPLEMENT_CALLBACKS_SIMPLE /** * hb_unicode_compose: - * @ufuncs: Unicode functions. - * @a: - * @b: - * @ab: (out): + * @ufuncs: The Unicode-functions structure + * @a: The first Unicode code point to compose + * @b: The second Unicode code point to compose + * @ab: (out): The composition of @a, @b * - * + * Fetches the composition of a sequence of two Unicode + * code points. * - * Return value: + * Calls the composition function of the specified + * Unicode-functions structure @ufuncs. + * + * Return value: `true` if @a and @b composed, `false` otherwise * * Since: 0.9.2 **/ @@ -408,14 +446,17 @@ hb_unicode_compose (hb_unicode_funcs_t *ufuncs, /** * hb_unicode_decompose: - * @ufuncs: Unicode functions. - * @ab: - * @a: (out): - * @b: (out): + * @ufuncs: The Unicode-functions structure + * @ab: Unicode code point to decompose + * @a: (out): The first code point of the decomposition of @ab + * @b: (out): The second code point of the decomposition of @ab + * + * Fetches the decomposition of a Unicode code point. * - * + * Calls the decomposition function of the specified + * Unicode-functions structure @ufuncs. * - * Return value: + * Return value: `true` if @ab was decomposed, `false` otherwise * * Since: 0.9.2 **/ @@ -428,17 +469,20 @@ hb_unicode_decompose (hb_unicode_funcs_t *ufuncs, return ufuncs->decompose (ab, a, b); } +#ifndef HB_DISABLE_DEPRECATED /** * hb_unicode_decompose_compatibility: - * @ufuncs: Unicode functions. - * @u: - * @decomposed: (out): + * @ufuncs: The Unicode-functions structure + * @u: Code point to decompose + * @decomposed: (out): Compatibility decomposition of @u * - * + * Fetches the compatibility decomposition of a Unicode + * code point. Deprecated. * - * Return value: + * Return value: length of @decomposed. * * Since: 0.9.2 + * Deprecated: 2.0.0 **/ unsigned int hb_unicode_decompose_compatibility (hb_unicode_funcs_t *ufuncs, @@ -447,9 +491,11 @@ hb_unicode_decompose_compatibility (hb_unicode_funcs_t *ufuncs, { return ufuncs->decompose_compatibility (u, decomposed); } +#endif -/* See hb-unicode-private.hh for details. */ +#ifndef HB_NO_OT_SHAPE +/* See hb-unicode.hh for details. */ const uint8_t _hb_modified_combining_class[256] = { @@ -561,3 +607,19 @@ _hb_modified_combining_class[256] = 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, /* HB_UNICODE_COMBINING_CLASS_INVALID */ }; +#endif + + +/* + * Emoji + */ +#ifndef HB_NO_EMOJI_SEQUENCES + +#include "hb-unicode-emoji-table.hh" + +bool +_hb_unicode_is_emoji_Extended_Pictographic (hb_codepoint_t cp) +{ + return _hb_emoji_is_Extended_Pictographic (cp); +} +#endif |