diff options
Diffstat (limited to 'Build/source/libs/harfbuzz/harfbuzz-0.9.22/src/hb-common.cc')
-rw-r--r-- | Build/source/libs/harfbuzz/harfbuzz-0.9.22/src/hb-common.cc | 579 |
1 files changed, 0 insertions, 579 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-0.9.22/src/hb-common.cc b/Build/source/libs/harfbuzz/harfbuzz-0.9.22/src/hb-common.cc deleted file mode 100644 index cf24660f798..00000000000 --- a/Build/source/libs/harfbuzz/harfbuzz-0.9.22/src/hb-common.cc +++ /dev/null @@ -1,579 +0,0 @@ -/* - * Copyright © 2009,2010 Red Hat, Inc. - * Copyright © 2011,2012 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 - * Google Author(s): Behdad Esfahbod - */ - -#include "hb-private.hh" - -#include "hb-version.h" - -#include "hb-mutex-private.hh" -#include "hb-object-private.hh" - -#include <locale.h> - - -/* hb_options_t */ - -hb_options_union_t _hb_options; - -void -_hb_options_init (void) -{ - hb_options_union_t u; - u.i = 0; - u.opts.initialized = 1; - - char *c = getenv ("HB_OPTIONS"); - u.opts.uniscribe_bug_compatible = c && strstr (c, "uniscribe-bug-compatible"); - - /* This is idempotent and threadsafe. */ - _hb_options = u; -} - - -/* hb_tag_t */ - -/** - * hb_tag_from_string: - * @str: (array length=len): - * @len: - * - * - * - * Return value: - * - * Since: 1.0 - **/ -hb_tag_t -hb_tag_from_string (const char *str, int len) -{ - char tag[4]; - unsigned int i; - - if (!str || !len || !*str) - return HB_TAG_NONE; - - if (len < 0 || len > 4) - len = 4; - for (i = 0; i < (unsigned) len && str[i]; i++) - tag[i] = str[i]; - for (; i < 4; i++) - tag[i] = ' '; - - return HB_TAG_CHAR4 (tag); -} - -/** - * hb_tag_to_string: - * @tag: - * @buf: (array fixed-size=4): - * - * - * - * Since: 1.0 - **/ -void -hb_tag_to_string (hb_tag_t tag, char *buf) -{ - buf[0] = (char) (uint8_t) (tag >> 24); - buf[1] = (char) (uint8_t) (tag >> 16); - buf[2] = (char) (uint8_t) (tag >> 8); - buf[3] = (char) (uint8_t) (tag >> 0); -} - - -/* hb_direction_t */ - -const char direction_strings[][4] = { - "ltr", - "rtl", - "ttb", - "btt" -}; - -/** - * hb_direction_from_string: - * @str: (array length=len): - * @len: - * - * - * - * Return value: - * - * Since: 1.0 - **/ -hb_direction_t -hb_direction_from_string (const char *str, int len) -{ - if (unlikely (!str || !len || !*str)) - return HB_DIRECTION_INVALID; - - /* Lets match loosely: just match the first letter, such that - * all of "ltr", "left-to-right", etc work! - */ - char c = TOLOWER (str[0]); - for (unsigned int i = 0; i < ARRAY_LENGTH (direction_strings); i++) - if (c == direction_strings[i][0]) - return (hb_direction_t) (HB_DIRECTION_LTR + i); - - return HB_DIRECTION_INVALID; -} - -/** - * hb_direction_to_string: - * @direction: - * - * - * - * Return value: (transfer none): - * - * Since: 1.0 - **/ -const char * -hb_direction_to_string (hb_direction_t direction) -{ - if (likely ((unsigned int) (direction - HB_DIRECTION_LTR) - < ARRAY_LENGTH (direction_strings))) - return direction_strings[direction - HB_DIRECTION_LTR]; - - return "invalid"; -} - - -/* hb_language_t */ - -struct hb_language_impl_t { - const char s[1]; -}; - -static const char canon_map[256] = { - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, '-', 0, 0, - '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 0, 0, 0, 0, 0, 0, - '-', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', - 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 0, 0, 0, 0, '-', - 0, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', - 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 0, 0, 0, 0, 0 -}; - -static hb_bool_t -lang_equal (hb_language_t v1, - const void *v2) -{ - const unsigned char *p1 = (const unsigned char *) v1; - const unsigned char *p2 = (const unsigned char *) v2; - - while (*p1 && *p1 == canon_map[*p2]) - p1++, p2++; - - return *p1 == canon_map[*p2]; -} - -#if 0 -static unsigned int -lang_hash (const void *key) -{ - const unsigned char *p = key; - unsigned int h = 0; - while (canon_map[*p]) - { - h = (h << 5) - h + canon_map[*p]; - p++; - } - - return h; -} -#endif - - -struct hb_language_item_t { - - struct hb_language_item_t *next; - hb_language_t lang; - - inline bool operator == (const char *s) const { - return lang_equal (lang, s); - } - - inline hb_language_item_t & operator = (const char *s) { - lang = (hb_language_t) strdup (s); - for (unsigned char *p = (unsigned char *) lang; *p; p++) - *p = canon_map[*p]; - - return *this; - } - - void finish (void) { free ((void *) lang); } -}; - - -/* Thread-safe lock-free language list */ - -static hb_language_item_t *langs; - -static inline -void free_langs (void) -{ - while (langs) { - hb_language_item_t *next = langs->next; - langs->finish (); - free (langs); - langs = next; - } -} - -static hb_language_item_t * -lang_find_or_insert (const char *key) -{ -retry: - hb_language_item_t *first_lang = (hb_language_item_t *) hb_atomic_ptr_get (&langs); - - for (hb_language_item_t *lang = first_lang; lang; lang = lang->next) - if (*lang == key) - return lang; - - /* Not found; allocate one. */ - hb_language_item_t *lang = (hb_language_item_t *) calloc (1, sizeof (hb_language_item_t)); - if (unlikely (!lang)) - return NULL; - lang->next = first_lang; - *lang = key; - - if (!hb_atomic_ptr_cmpexch (&langs, first_lang, lang)) { - free (lang); - goto retry; - } - -#ifdef HAVE_ATEXIT - if (!first_lang) - atexit (free_langs); /* First person registers atexit() callback. */ -#endif - - return lang; -} - - -/** - * hb_language_from_string: - * @str: (array length=len): - * @len: - * - * - * - * Return value: - * - * Since: 1.0 - **/ -hb_language_t -hb_language_from_string (const char *str, int len) -{ - char strbuf[64]; - - if (!str || !len || !*str) - return HB_LANGUAGE_INVALID; - - if (len >= 0) - { - len = MIN (len, (int) sizeof (strbuf) - 1); - str = (char *) memcpy (strbuf, str, len); - strbuf[len] = '\0'; - } - - hb_language_item_t *item = lang_find_or_insert (str); - - return likely (item) ? item->lang : HB_LANGUAGE_INVALID; -} - -/** - * hb_language_to_string: - * @language: - * - * - * - * Return value: (transfer none): - * - * Since: 1.0 - **/ -const char * -hb_language_to_string (hb_language_t language) -{ - /* This is actually NULL-safe! */ - return language->s; -} - -/** - * hb_language_get_default: - * - * - * - * Return value: - * - * Since: 1.0 - **/ -hb_language_t -hb_language_get_default (void) -{ - static hb_language_t default_language = HB_LANGUAGE_INVALID; - - hb_language_t language = (hb_language_t) hb_atomic_ptr_get (&default_language); - if (unlikely (language == HB_LANGUAGE_INVALID)) { - language = hb_language_from_string (setlocale (LC_CTYPE, NULL), -1); - hb_atomic_ptr_cmpexch (&default_language, HB_LANGUAGE_INVALID, language); - } - - return default_language; -} - - -/* hb_script_t */ - -/** - * hb_script_from_iso15924_tag: - * @tag: - * - * - * - * Return value: - * - * Since: 1.0 - **/ -hb_script_t -hb_script_from_iso15924_tag (hb_tag_t tag) -{ - if (unlikely (tag == HB_TAG_NONE)) - return HB_SCRIPT_INVALID; - - /* Be lenient, adjust case (one capital letter followed by three small letters) */ - tag = (tag & 0xDFDFDFDF) | 0x00202020; - - switch (tag) { - - /* These graduated from the 'Q' private-area codes, but - * the old code is still aliased by Unicode, and the Qaai - * one in use by ICU. */ - case HB_TAG('Q','a','a','i'): return HB_SCRIPT_INHERITED; - case HB_TAG('Q','a','a','c'): return HB_SCRIPT_COPTIC; - - /* Script variants from http://unicode.org/iso15924/ */ - case HB_TAG('C','y','r','s'): return HB_SCRIPT_CYRILLIC; - 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; - case HB_TAG('S','y','r','j'): return HB_SCRIPT_SYRIAC; - case HB_TAG('S','y','r','n'): return HB_SCRIPT_SYRIAC; - } - - /* If it looks right, just use the tag as a script */ - if (((uint32_t) tag & 0xE0E0E0E0) == 0x40606060) - return (hb_script_t) tag; - - /* Otherwise, return unknown */ - return HB_SCRIPT_UNKNOWN; -} - -/** - * hb_script_from_string: - * @s: (array length=len): - * @len: - * - * - * - * Return value: - * - * Since: 1.0 - **/ -hb_script_t -hb_script_from_string (const char *s, int len) -{ - return hb_script_from_iso15924_tag (hb_tag_from_string (s, len)); -} - -/** - * hb_script_to_iso15924_tag: - * @script: - * - * - * - * Return value: - * - * Since: 1.0 - **/ -hb_tag_t -hb_script_to_iso15924_tag (hb_script_t script) -{ - return (hb_tag_t) script; -} - -/** - * hb_script_get_horizontal_direction: - * @script: - * - * - * - * Return value: - * - * Since: 1.0 - **/ -hb_direction_t -hb_script_get_horizontal_direction (hb_script_t script) -{ - /* http://goo.gl/x9ilM */ - switch ((hb_tag_t) script) - { - /* Unicode-1.1 additions */ - case HB_SCRIPT_ARABIC: - case HB_SCRIPT_HEBREW: - - /* Unicode-3.0 additions */ - case HB_SCRIPT_SYRIAC: - case HB_SCRIPT_THAANA: - - /* Unicode-4.0 additions */ - case HB_SCRIPT_CYPRIOT: - - /* Unicode-4.1 additions */ - case HB_SCRIPT_KHAROSHTHI: - - /* Unicode-5.0 additions */ - case HB_SCRIPT_PHOENICIAN: - case HB_SCRIPT_NKO: - - /* Unicode-5.1 additions */ - case HB_SCRIPT_LYDIAN: - - /* Unicode-5.2 additions */ - case HB_SCRIPT_AVESTAN: - case HB_SCRIPT_IMPERIAL_ARAMAIC: - case HB_SCRIPT_INSCRIPTIONAL_PAHLAVI: - case HB_SCRIPT_INSCRIPTIONAL_PARTHIAN: - case HB_SCRIPT_OLD_SOUTH_ARABIAN: - case HB_SCRIPT_OLD_TURKIC: - case HB_SCRIPT_SAMARITAN: - - /* Unicode-6.0 additions */ - case HB_SCRIPT_MANDAIC: - - /* Unicode-6.1 additions */ - case HB_SCRIPT_MEROITIC_CURSIVE: - case HB_SCRIPT_MEROITIC_HIEROGLYPHS: - - return HB_DIRECTION_RTL; - } - - return HB_DIRECTION_LTR; -} - - -/* 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, replace); - - return ret; -} - -void * -hb_user_data_array_t::get (hb_user_data_key_t *key) -{ - hb_user_data_item_t item = {NULL }; - - return items.find (key, &item, lock) ? item.data : NULL; -} - - -/* hb_version */ - -/** - * hb_version: - * @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. - * - * Since: 1.0 - **/ -void -hb_version (unsigned int *major, - unsigned int *minor, - unsigned int *micro) -{ - *major = HB_VERSION_MAJOR; - *minor = HB_VERSION_MINOR; - *micro = HB_VERSION_MICRO; -} - -/** - * hb_version_string: - * - * Returns library version as a string with three components. - * - * Return value: library version string. - * - * Since: 1.0 - **/ -const char * -hb_version_string (void) -{ - return HB_VERSION_STRING; -} - -/** - * hb_version_check: - * @major: - * @minor: - * @micro: - * - * - * - * Return value: - * - * Since: 1.0 - **/ -hb_bool_t -hb_version_check (unsigned int major, - unsigned int minor, - unsigned int micro) -{ - return HB_VERSION_CHECK (major, minor, micro); -} |