diff options
Diffstat (limited to 'src/3rdparty/harfbuzz-ng/src/hb-common.cc')
| -rw-r--r-- | src/3rdparty/harfbuzz-ng/src/hb-common.cc | 346 |
1 files changed, 221 insertions, 125 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/hb-common.cc b/src/3rdparty/harfbuzz-ng/src/hb-common.cc index 0ae0c05f48..4b8bae4422 100644 --- a/src/3rdparty/harfbuzz-ng/src/hb-common.cc +++ b/src/3rdparty/harfbuzz-ng/src/hb-common.cc @@ -29,11 +29,6 @@ #include "hb.hh" #include "hb-machinery.hh" -#include <locale.h> - -#ifdef HB_NO_SETLOCALE -#define setlocale(Category, Locale) "C" -#endif /** * SECTION:hb-common @@ -69,7 +64,6 @@ _hb_options_init () if (0 == strncmp (c, name, p - c) && strlen (name) == static_cast<size_t>(p - c)) do { u.opts.symbol = true; } while (0) OPTION ("uniscribe-bug-compatible", uniscribe_bug_compatible); - OPTION ("aat", aat); #undef OPTION @@ -79,7 +73,7 @@ _hb_options_init () } /* This is idempotent and threadsafe. */ - _hb_options.set_relaxed (u.i); + _hb_options = u.i; } @@ -87,12 +81,15 @@ _hb_options_init () /** * hb_tag_from_string: - * @str: (array length=len) (element-type uint8_t): - * @len: - * + * @str: (array length=len) (element-type uint8_t): String to convert + * @len: Length of @str, or -1 if it is `NULL`-terminated * + * Converts a string into an #hb_tag_t. Valid tags + * are four characters. Shorter input strings will be + * padded with spaces. Longer input strings will be + * truncated. * - * Return value: + * Return value: The #hb_tag_t corresponding to @str * * Since: 0.9.2 **/ @@ -117,10 +114,11 @@ hb_tag_from_string (const char *str, int len) /** * hb_tag_to_string: - * @tag: - * @buf: (out caller-allocates) (array fixed-size=4) (element-type uint8_t): - * + * @tag: #hb_tag_t to convert + * @buf: (out caller-allocates) (array fixed-size=4) (element-type uint8_t): Converted string * + * Converts an #hb_tag_t to a string and returns it in @buf. + * Strings will be four characters long. * * Since: 0.9.5 **/ @@ -136,7 +134,7 @@ hb_tag_to_string (hb_tag_t tag, char *buf) /* hb_direction_t */ -const char direction_strings[][4] = { +static const char direction_strings[][4] = { "ltr", "rtl", "ttb", @@ -145,12 +143,17 @@ const char direction_strings[][4] = { /** * hb_direction_from_string: - * @str: (array length=len) (element-type uint8_t): - * @len: + * @str: (array length=len) (element-type uint8_t): String to convert + * @len: Length of @str, or -1 if it is `NULL`-terminated * + * Converts a string to an #hb_direction_t. * + * Matching is loose and applies only to the first letter. For + * examples, "LTR" and "left-to-right" will both return #HB_DIRECTION_LTR. * - * Return value: + * Unmatched strings will return #HB_DIRECTION_INVALID. + * + * Return value: The #hb_direction_t matching @str * * Since: 0.9.2 **/ @@ -173,11 +176,11 @@ hb_direction_from_string (const char *str, int len) /** * hb_direction_to_string: - * @direction: - * + * @direction: The #hb_direction_t to convert * + * Converts an #hb_direction_t to a string. * - * Return value: (transfer none): + * Return value: (transfer none): The string corresponding to @direction * * Since: 0.9.2 **/ @@ -249,16 +252,14 @@ struct hb_language_item_t { bool operator == (const char *s) const { return lang_equal (lang, s); } - hb_language_item_t & operator = (const char *s) { - /* If a custom allocated is used calling strdup() pairs - badly with a call to the custom free() in fini() below. - Therefore don't call strdup(), implement its behavior. - */ + hb_language_item_t & operator = (const char *s) + { + /* We can't call strdup(), because we allow custom allocators. */ size_t len = strlen(s) + 1; - lang = (hb_language_t) malloc(len); + lang = (hb_language_t) hb_malloc(len); if (likely (lang)) { - memcpy((unsigned char *) lang, s, len); + hb_memcpy((unsigned char *) lang, s, len); for (unsigned char *p = (unsigned char *) lang; *p; p++) *p = canon_map[*p]; } @@ -266,16 +267,15 @@ struct hb_language_item_t { return *this; } - void fini () { free ((void *) lang); } + void fini () { hb_free ((void *) lang); } }; -/* Thread-safe lock-free language list */ +/* Thread-safe lockfree language list */ static hb_atomic_ptr_t <hb_language_item_t> langs; -#if HB_USE_ATEXIT -static void +static inline void free_langs () { retry: @@ -286,11 +286,10 @@ retry: while (first_lang) { hb_language_item_t *next = first_lang->next; first_lang->fini (); - free (first_lang); + hb_free (first_lang); first_lang = next; } } -#endif static hb_language_item_t * lang_find_or_insert (const char *key) @@ -303,28 +302,26 @@ retry: return lang; /* Not found; allocate one. */ - hb_language_item_t *lang = (hb_language_item_t *) calloc (1, sizeof (hb_language_item_t)); + hb_language_item_t *lang = (hb_language_item_t *) hb_calloc (1, sizeof (hb_language_item_t)); if (unlikely (!lang)) return nullptr; lang->next = first_lang; *lang = key; if (unlikely (!lang->lang)) { - free (lang); + hb_free (lang); return nullptr; } if (unlikely (!langs.cmpexch (first_lang, lang))) { lang->fini (); - free (lang); + hb_free (lang); goto retry; } -#if HB_USE_ATEXIT if (!first_lang) - atexit (free_langs); /* First person registers atexit() callback. */ -#endif + hb_atexit (free_langs); /* First person registers atexit() callback. */ return lang; } @@ -333,14 +330,14 @@ retry: /** * hb_language_from_string: * @str: (array length=len) (element-type uint8_t): a string representing - * a BCP 47 language tag - * @len: length of the @str, or -1 if it is %NULL-terminated. + * a BCP 47 language tag + * @len: length of the @str, or -1 if it is `NULL`-terminated. * - * Converts @str representing a BCP 47 language tag to the corresponding + * Converts @str representing a BCP 47 language tag to the corresponding * #hb_language_t. * * Return value: (transfer none): - * The #hb_language_t corresponding to the BCP 47 language tag. + * The #hb_language_t corresponding to the BCP 47 language tag. * * Since: 0.9.2 **/ @@ -356,7 +353,7 @@ hb_language_from_string (const char *str, int len) /* NUL-terminate it. */ char strbuf[64]; len = hb_min (len, (int) sizeof (strbuf) - 1); - memcpy (strbuf, str, len); + hb_memcpy (strbuf, str, len); strbuf[len] = '\0'; item = lang_find_or_insert (strbuf); } @@ -368,12 +365,12 @@ hb_language_from_string (const char *str, int len) /** * hb_language_to_string: - * @language: an #hb_language_t to convert. + * @language: The #hb_language_t to convert * - * See hb_language_from_string(). + * Converts an #hb_language_t to a string. * * Return value: (transfer none): - * A %NULL-terminated string representing the @language. Must not be freed by + * A `NULL`-terminated string representing the @language. Must not be freed by * the caller. * * Since: 0.9.2 @@ -389,16 +386,17 @@ hb_language_to_string (hb_language_t language) /** * hb_language_get_default: * - * Get default language from current locale. + * Fetch the default language from current locale. * - * Note that the first time this function is called, it calls + * <note>Note that the first time this function is called, it calls * "setlocale (LC_CTYPE, nullptr)" to fetch current locale. The underlying * setlocale function is, in many implementations, NOT threadsafe. To avoid * problems, call this function once before multiple threads can call it. * This function is only used from hb_buffer_guess_segment_properties() by - * HarfBuzz itself. + * HarfBuzz itself.</note> * - * Return value: (transfer none): + * Return value: (transfer none): The default language of the locale as + * an #hb_language_t * * Since: 0.9.2 **/ @@ -410,24 +408,56 @@ hb_language_get_default () hb_language_t language = default_language; if (unlikely (language == HB_LANGUAGE_INVALID)) { - language = hb_language_from_string (setlocale (LC_CTYPE, nullptr), -1); + language = hb_language_from_string (hb_setlocale (LC_CTYPE, nullptr), -1); (void) default_language.cmpexch (HB_LANGUAGE_INVALID, language); } return language; } +/** + * hb_language_matches: + * @language: The #hb_language_t to work on + * @specific: Another #hb_language_t + * + * Check whether a second language tag is the same or a more + * specific version of the provided language tag. For example, + * "fa_IR.utf8" is a more specific tag for "fa" or for "fa_IR". + * + * Return value: `true` if languages match, `false` otherwise. + * + * Since: 5.0.0 + **/ +hb_bool_t +hb_language_matches (hb_language_t language, + hb_language_t specific) +{ + if (language == specific) return true; + if (!language || !specific) return false; + + const char *l = language->s; + const char *s = specific->s; + unsigned ll = strlen (l); + unsigned sl = strlen (s); + + if (ll > sl) + return false; + + return strncmp (l, s, ll) == 0 && + (s[ll] == '\0' || s[ll] == '-'); +} + /* hb_script_t */ /** * hb_script_from_iso15924_tag: - * @tag: an #hb_tag_t representing an ISO 15924 tag. + * @tag: an #hb_tag_t representing an ISO 15924 tag. * - * Converts an ISO 15924 script tag to a corresponding #hb_script_t. + * Converts an ISO 15924 script tag to a corresponding #hb_script_t. * * Return value: - * An #hb_script_t corresponding to the ISO 15924 tag. + * An #hb_script_t corresponding to the ISO 15924 tag. * * Since: 0.9.2 **/ @@ -449,7 +479,12 @@ hb_script_from_iso15924_tag (hb_tag_t tag) case HB_TAG('Q','a','a','c'): return HB_SCRIPT_COPTIC; /* Script variants from https://unicode.org/iso15924/ */ + case HB_TAG('A','r','a','n'): return HB_SCRIPT_ARABIC; case HB_TAG('C','y','r','s'): return HB_SCRIPT_CYRILLIC; + case HB_TAG('G','e','o','k'): return HB_SCRIPT_GEORGIAN; + case HB_TAG('H','a','n','s'): return HB_SCRIPT_HAN; + case HB_TAG('H','a','n','t'): return HB_SCRIPT_HAN; + case HB_TAG('J','a','m','o'): return HB_SCRIPT_HANGUL; case HB_TAG('L','a','t','f'): return HB_SCRIPT_LATIN; case HB_TAG('L','a','t','g'): return HB_SCRIPT_LATIN; case HB_TAG('S','y','r','e'): return HB_SCRIPT_SYRIAC; @@ -468,15 +503,15 @@ hb_script_from_iso15924_tag (hb_tag_t tag) /** * hb_script_from_string: * @str: (array length=len) (element-type uint8_t): a string representing an - * ISO 15924 tag. - * @len: length of the @str, or -1 if it is %NULL-terminated. + * ISO 15924 tag. + * @len: length of the @str, or -1 if it is `NULL`-terminated. * - * Converts a string @str representing an ISO 15924 script tag to a + * Converts a string @str representing an ISO 15924 script tag to a * corresponding #hb_script_t. Shorthand for hb_tag_from_string() then * hb_script_from_iso15924_tag(). * * Return value: - * An #hb_script_t corresponding to the ISO 15924 tag. + * An #hb_script_t corresponding to the ISO 15924 tag. * * Since: 0.9.2 **/ @@ -490,10 +525,10 @@ hb_script_from_string (const char *str, int len) * hb_script_to_iso15924_tag: * @script: an #hb_script_t to convert. * - * See hb_script_from_iso15924_tag(). + * Converts an #hb_script_t to a corresponding ISO 15924 script tag. * * Return value: - * An #hb_tag_t representing an ISO 15924 script tag. + * An #hb_tag_t representing an ISO 15924 script tag. * * Since: 0.9.2 **/ @@ -505,11 +540,16 @@ hb_script_to_iso15924_tag (hb_script_t script) /** * hb_script_get_horizontal_direction: - * @script: + * @script: The #hb_script_t to query * + * Fetches the #hb_direction_t of a script when it is + * set horizontally. All right-to-left scripts will return + * #HB_DIRECTION_RTL. All left-to-right scripts will return + * #HB_DIRECTION_LTR. Scripts that can be written either + * horizontally or vertically will return #HB_DIRECTION_INVALID. + * Unknown scripts will return #HB_DIRECTION_LTR. * - * - * Return value: + * Return value: The horizontal #hb_direction_t of @script * * Since: 0.9.2 **/ @@ -575,6 +615,16 @@ hb_script_get_horizontal_direction (hb_script_t script) case HB_SCRIPT_OLD_SOGDIAN: case HB_SCRIPT_SOGDIAN: + /* Unicode-12.0 additions */ + case HB_SCRIPT_ELYMAIC: + + /* Unicode-13.0 additions */ + case HB_SCRIPT_CHORASMIAN: + case HB_SCRIPT_YEZIDI: + + /* Unicode-14.0 additions */ + case HB_SCRIPT_OLD_UYGHUR: + return HB_DIRECTION_RTL; @@ -582,6 +632,7 @@ hb_script_get_horizontal_direction (hb_script_t script) case HB_SCRIPT_OLD_HUNGARIAN: case HB_SCRIPT_OLD_ITALIC: case HB_SCRIPT_RUNIC: + case HB_SCRIPT_TIFINAGH: return HB_DIRECTION_INVALID; } @@ -590,38 +641,6 @@ hb_script_get_horizontal_direction (hb_script_t script) } -/* hb_user_data_array_t */ - -bool -hb_user_data_array_t::set (hb_user_data_key_t *key, - void * data, - hb_destroy_func_t destroy, - hb_bool_t replace) -{ - if (!key) - return false; - - if (replace) { - if (!data && !destroy) { - items.remove (key, lock); - return true; - } - } - hb_user_data_item_t item = {key, data, destroy}; - bool ret = !!items.replace_or_insert (item, lock, (bool) replace); - - return ret; -} - -void * -hb_user_data_array_t::get (hb_user_data_key_t *key) -{ - hb_user_data_item_t item = {nullptr, nullptr, nullptr}; - - return items.find (key, &item, lock) ? item.data : nullptr; -} - - /* hb_version */ @@ -639,9 +658,9 @@ hb_user_data_array_t::get (hb_user_data_key_t *key) /** * hb_version: - * @major: (out): Library major version component. - * @minor: (out): Library minor version component. - * @micro: (out): Library micro version component. + * @major: (out): Library major version component + * @minor: (out): Library minor version component + * @micro: (out): Library micro version component * * Returns library version as three integer components. * @@ -662,7 +681,7 @@ hb_version (unsigned int *major, * * Returns library version as a string with three components. * - * Return value: library version string. + * Return value: Library version string * * Since: 0.9.2 **/ @@ -674,13 +693,15 @@ hb_version_string () /** * hb_version_atleast: - * @major: - * @minor: - * @micro: - * + * @major: Library major version component + * @minor: Library minor version component + * @micro: Library micro version component * + * Tests the library version against a minimum value, + * as three integer components. * - * Return value: + * Return value: `true` if the library is equal to or greater than + * the test value, `false` otherwise * * Since: 0.9.30 **/ @@ -794,7 +815,7 @@ parse_tag (const char **pp, const char *end, hb_tag_t *tag) } const char *p = *pp; - while (*pp < end && (ISALNUM(**pp) || **pp == '_')) + while (*pp < end && (**pp != ' ' && **pp != '=' && **pp != '[' && **pp != quote)) (*pp)++; if (p == *pp || *pp - p > 4) @@ -867,7 +888,7 @@ parse_one_feature (const char **pp, const char *end, hb_feature_t *feature) /** * hb_feature_from_string: * @str: (array length=len) (element-type uint8_t): a string to parse - * @len: length of @str, or -1 if string is %NULL terminated + * @len: length of @str, or -1 if string is `NULL` terminated * @feature: (out): the #hb_feature_t to initialize with the parsed values * * Parses a string into a #hb_feature_t. @@ -909,7 +930,7 @@ parse_one_feature (const char **pp, const char *end, hb_feature_t *feature) * </informaltable> * * Return value: - * %true if @str is successfully parsed, %false otherwise. + * `true` if @str is successfully parsed, `false` otherwise * * Since: 0.9.5 **/ @@ -930,7 +951,7 @@ hb_feature_from_string (const char *str, int len, } if (feature) - memset (feature, 0, sizeof (*feature)); + hb_memset (feature, 0, sizeof (*feature)); return false; } @@ -940,7 +961,7 @@ hb_feature_from_string (const char *str, int len, * @buf: (array length=size) (out): output string * @size: the allocated size of @buf * - * Converts a #hb_feature_t into a %NULL-terminated string in the format + * Converts a #hb_feature_t into a `NULL`-terminated string in the format * understood by hb_feature_from_string(). The client in responsible for * allocating big enough size for @buf, 128 bytes is more than enough. * @@ -960,14 +981,14 @@ hb_feature_to_string (hb_feature_t *feature, len += 4; while (len && s[len - 1] == ' ') len--; - if (feature->start != 0 || feature->end != (unsigned int) -1) + if (feature->start != HB_FEATURE_GLOBAL_START || feature->end != HB_FEATURE_GLOBAL_END) { s[len++] = '['; if (feature->start) len += hb_max (0, snprintf (s + len, ARRAY_LENGTH (s) - len, "%u", feature->start)); if (feature->end != feature->start + 1) { s[len++] = ':'; - if (feature->end != (unsigned int) -1) + if (feature->end != HB_FEATURE_GLOBAL_END) len += hb_max (0, snprintf (s + len, ARRAY_LENGTH (s) - len, "%u", feature->end)); } s[len++] = ']'; @@ -975,11 +996,11 @@ hb_feature_to_string (hb_feature_t *feature, if (feature->value > 1) { s[len++] = '='; - len += hb_max (0, snprintf (s + len, ARRAY_LENGTH (s) - len, "%u", feature->value)); + len += hb_max (0, snprintf (s + len, ARRAY_LENGTH (s) - len, "%" PRIu32, feature->value)); } assert (len < ARRAY_LENGTH (s)); len = hb_min (len, size - 1); - memcpy (buf, s, len); + hb_memcpy (buf, s, len); buf[len] = '\0'; } @@ -1007,6 +1028,21 @@ parse_one_variation (const char **pp, const char *end, hb_variation_t *variation /** * hb_variation_from_string: + * @str: (array length=len) (element-type uint8_t): a string to parse + * @len: length of @str, or -1 if string is `NULL` terminated + * @variation: (out): the #hb_variation_t to initialize with the parsed values + * + * Parses a string into a #hb_variation_t. + * + * The format for specifying variation settings follows. All valid CSS + * font-variation-settings values other than 'normal' and 'inherited' are also + * accepted, though, not documented below. + * + * The format is a tag, optionally followed by an equals sign, followed by a + * number. For example `wght=500`, or `slnt=-7.5`. + * + * Return value: + * `true` if @str is successfully parsed, `false` otherwise * * Since: 1.4.2 */ @@ -1027,12 +1063,60 @@ hb_variation_from_string (const char *str, int len, } if (variation) - memset (variation, 0, sizeof (*variation)); + hb_memset (variation, 0, sizeof (*variation)); return false; } +#ifndef HB_NO_SETLOCALE + +static inline void free_static_C_locale (); + +static struct hb_C_locale_lazy_loader_t : hb_lazy_loader_t<hb_remove_pointer<hb_locale_t>, + hb_C_locale_lazy_loader_t> +{ + static hb_locale_t create () + { + hb_locale_t l = newlocale (LC_ALL_MASK, "C", NULL); + if (!l) + return l; + + hb_atexit (free_static_C_locale); + + return l; + } + static void destroy (hb_locale_t l) + { + freelocale (l); + } + static hb_locale_t get_null () + { + return (hb_locale_t) 0; + } +} static_C_locale; + +static inline +void free_static_C_locale () +{ + static_C_locale.free_instance (); +} + +static hb_locale_t +get_C_locale () +{ + return static_C_locale.get_unconst (); +} + +#endif + /** * hb_variation_to_string: + * @variation: an #hb_variation_t to convert + * @buf: (array length=size) (out caller-allocates): output string + * @size: the allocated size of @buf + * + * Converts an #hb_variation_t into a `NULL`-terminated string in the format + * understood by hb_variation_from_string(). The client in responsible for + * allocating big enough size for @buf, 128 bytes is more than enough. * * Since: 1.4.2 */ @@ -1049,19 +1133,25 @@ hb_variation_to_string (hb_variation_t *variation, while (len && s[len - 1] == ' ') len--; s[len++] = '='; + + hb_locale_t oldlocale HB_UNUSED; + oldlocale = hb_uselocale (get_C_locale ()); len += hb_max (0, snprintf (s + len, ARRAY_LENGTH (s) - len, "%g", (double) variation->value)); + (void) hb_uselocale (oldlocale); assert (len < ARRAY_LENGTH (s)); len = hb_min (len, size - 1); - memcpy (buf, s, len); + hb_memcpy (buf, s, len); buf[len] = '\0'; } /** * hb_color_get_alpha: - * color: a #hb_color_t we are interested in its channels. + * @color: an #hb_color_t we are interested in its channels. + * + * Fetches the alpha channel of the given @color. * - * Return value: Alpha channel value of the given color + * Return value: Alpha channel value * * Since: 2.1.0 */ @@ -1073,9 +1163,11 @@ uint8_t /** * hb_color_get_red: - * color: a #hb_color_t we are interested in its channels. + * @color: an #hb_color_t we are interested in its channels. + * + * Fetches the red channel of the given @color. * - * Return value: Red channel value of the given color + * Return value: Red channel value * * Since: 2.1.0 */ @@ -1087,9 +1179,11 @@ uint8_t /** * hb_color_get_green: - * color: a #hb_color_t we are interested in its channels. + * @color: an #hb_color_t we are interested in its channels. * - * Return value: Green channel value of the given color + * Fetches the green channel of the given @color. + * + * Return value: Green channel value * * Since: 2.1.0 */ @@ -1101,9 +1195,11 @@ uint8_t /** * hb_color_get_blue: - * color: a #hb_color_t we are interested in its channels. + * @color: an #hb_color_t we are interested in its channels. + * + * Fetches the blue channel of the given @color. * - * Return value: Blue channel value of the given color + * Return value: Blue channel value * * Since: 2.1.0 */ |