diff options
Diffstat (limited to 'src/hb-icu.cc')
| -rw-r--r-- | src/hb-icu.cc | 72 |
1 files changed, 50 insertions, 22 deletions
diff --git a/src/hb-icu.cc b/src/hb-icu.cc index ee54721..c52e165 100644 --- a/src/hb-icu.cc +++ b/src/hb-icu.cc @@ -34,7 +34,7 @@ #include "hb-unicode-private.hh" #include <unicode/uchar.h> -#include <unicode/unorm.h> +#include <unicode/unorm2.h> #include <unicode/ustring.h> #include <unicode/utf16.h> #include <unicode/uversion.h> @@ -200,7 +200,7 @@ hb_icu_unicode_compose (hb_unicode_funcs_t *ufuncs HB_UNUSED, if (err) return false; icu_err = U_ZERO_ERROR; - len = unorm_normalize (utf16, len, UNORM_NFC, 0, normalized, ARRAY_LENGTH (normalized), &icu_err); + len = unorm2_normalize (unorm2_getNFCInstance (&icu_err), utf16, len, normalized, ARRAY_LENGTH (normalized), &icu_err); if (U_FAILURE (icu_err)) return false; if (u_countChar32 (normalized, len) == 1) { @@ -261,7 +261,7 @@ hb_icu_unicode_decompose (hb_unicode_funcs_t *ufuncs HB_UNUSED, if (err) return false; icu_err = U_ZERO_ERROR; - len = unorm_normalize (utf16, len, UNORM_NFD, 0, normalized, ARRAY_LENGTH (normalized), &icu_err); + len = unorm2_normalize (unorm2_getNFDInstance (&icu_err), utf16, len, normalized, ARRAY_LENGTH (normalized), &icu_err); if (U_FAILURE (icu_err)) return false; @@ -281,7 +281,7 @@ hb_icu_unicode_decompose (hb_unicode_funcs_t *ufuncs HB_UNUSED, * the second part :-(. */ UChar recomposed[20]; icu_err = U_ZERO_ERROR; - unorm_normalize (normalized, len, UNORM_NFC, 0, recomposed, ARRAY_LENGTH (recomposed), &icu_err); + unorm2_normalize (unorm2_getNFCInstance (&icu_err), normalized, len, recomposed, ARRAY_LENGTH (recomposed), &icu_err); if (U_FAILURE (icu_err)) return false; hb_codepoint_t c; @@ -297,7 +297,7 @@ hb_icu_unicode_decompose (hb_unicode_funcs_t *ufuncs HB_UNUSED, U16_PREV_UNSAFE (normalized, len, *b); /* Changes len in-place. */ UChar recomposed[18 * 2]; icu_err = U_ZERO_ERROR; - len = unorm_normalize (normalized, len, UNORM_NFC, 0, recomposed, ARRAY_LENGTH (recomposed), &icu_err); + len = unorm2_normalize (unorm2_getNFCInstance (&icu_err), normalized, len, recomposed, ARRAY_LENGTH (recomposed), &icu_err); if (U_FAILURE (icu_err)) return false; /* We expect that recomposed has exactly one character now. */ @@ -331,41 +331,69 @@ hb_icu_unicode_decompose_compatibility (hb_unicode_funcs_t *ufuncs HB_UNUSED, /* Normalise the codepoint using NFKD mode. */ icu_err = U_ZERO_ERROR; - len = unorm_normalize (utf16, len, UNORM_NFKD, 0, normalized, ARRAY_LENGTH (normalized), &icu_err); - if (icu_err) + len = unorm2_normalize (unorm2_getNFKDInstance (&icu_err), utf16, len, normalized, ARRAY_LENGTH (normalized), &icu_err); + if (U_FAILURE (icu_err)) return 0; /* Convert the decomposed form from UTF-16 to UTF-32. */ icu_err = U_ZERO_ERROR; u_strToUTF32 ((UChar32*) decomposed, HB_UNICODE_MAX_DECOMPOSITION_LEN, &utf32_len, normalized, len, &icu_err); - if (icu_err) + if (U_FAILURE (icu_err)) return 0; return utf32_len; } +static hb_unicode_funcs_t *static_icu_funcs = nullptr; + +#ifdef HB_USE_ATEXIT +static +void free_static_icu_funcs (void) +{ +retry: + hb_unicode_funcs_t *icu_funcs = (hb_unicode_funcs_t *) hb_atomic_ptr_get (&static_icu_funcs); + if (!hb_atomic_ptr_cmpexch (&static_icu_funcs, icu_funcs, nullptr)) + goto retry; + + hb_unicode_funcs_destroy (icu_funcs); +} +#endif + hb_unicode_funcs_t * hb_icu_get_unicode_funcs (void) { - static const hb_unicode_funcs_t _hb_icu_unicode_funcs = { - HB_OBJECT_HEADER_STATIC, +retry: + hb_unicode_funcs_t *funcs = (hb_unicode_funcs_t *) hb_atomic_ptr_get (&static_icu_funcs); + + if (unlikely (!funcs)) + { +#if U_ICU_VERSION_MAJOR_NUM >= 49 + if (!hb_atomic_ptr_get (&normalizer)) { + UErrorCode icu_err = U_ZERO_ERROR; + /* We ignore failure in getNFCInstace(). */ + (void) hb_atomic_ptr_cmpexch (&normalizer, nullptr, unorm2_getNFCInstance (&icu_err)); + } +#endif + + funcs = hb_unicode_funcs_create (nullptr); - NULL, /* parent */ - true, /* immutable */ - { -#define HB_UNICODE_FUNC_IMPLEMENT(name) hb_icu_unicode_##name, +#define HB_UNICODE_FUNC_IMPLEMENT(name) \ + hb_unicode_funcs_set_##name##_func (funcs, hb_icu_unicode_##name, nullptr, nullptr); HB_UNICODE_FUNCS_IMPLEMENT_CALLBACKS #undef HB_UNICODE_FUNC_IMPLEMENT + + hb_unicode_funcs_make_immutable (funcs); + + if (!hb_atomic_ptr_cmpexch (&static_icu_funcs, nullptr, funcs)) { + hb_unicode_funcs_destroy (funcs); + goto retry; } - }; -#if U_ICU_VERSION_MAJOR_NUM >= 49 - if (!hb_atomic_ptr_get (&normalizer)) { - UErrorCode icu_err = U_ZERO_ERROR; - /* We ignore failure in getNFCInstace(). */ - (void) hb_atomic_ptr_cmpexch (&normalizer, NULL, unorm2_getNFCInstance (&icu_err)); - } +#ifdef HB_USE_ATEXIT + atexit (free_static_icu_funcs); /* First person registers atexit() callback. */ #endif - return const_cast<hb_unicode_funcs_t *> (&_hb_icu_unicode_funcs); + }; + + return hb_unicode_funcs_reference (funcs); } |