diff options
Diffstat (limited to 'Build/source/libs/harfbuzz/harfbuzz-1.0.3/src/hb-shaper.cc')
-rw-r--r-- | Build/source/libs/harfbuzz/harfbuzz-1.0.3/src/hb-shaper.cc | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-1.0.3/src/hb-shaper.cc b/Build/source/libs/harfbuzz/harfbuzz-1.0.3/src/hb-shaper.cc deleted file mode 100644 index 580b95c84b4..00000000000 --- a/Build/source/libs/harfbuzz/harfbuzz-1.0.3/src/hb-shaper.cc +++ /dev/null @@ -1,111 +0,0 @@ -/* - * Copyright © 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. - * - * Google Author(s): Behdad Esfahbod - */ - -#include "hb-private.hh" -#include "hb-shaper-private.hh" -#include "hb-atomic-private.hh" - - -static const hb_shaper_pair_t all_shapers[] = { -#define HB_SHAPER_IMPLEMENT(name) {#name, _hb_##name##_shape}, -#include "hb-shaper-list.hh" -#undef HB_SHAPER_IMPLEMENT -}; - - -/* Thread-safe, lock-free, shapers */ - -static const hb_shaper_pair_t *static_shapers; - -#ifdef HB_USE_ATEXIT -static -void free_static_shapers (void) -{ - if (unlikely (static_shapers != all_shapers)) - free ((void *) static_shapers); -} -#endif - -const hb_shaper_pair_t * -_hb_shapers_get (void) -{ -retry: - hb_shaper_pair_t *shapers = (hb_shaper_pair_t *) hb_atomic_ptr_get (&static_shapers); - - if (unlikely (!shapers)) - { - char *env = getenv ("HB_SHAPER_LIST"); - if (!env || !*env) { - (void) hb_atomic_ptr_cmpexch (&static_shapers, NULL, &all_shapers[0]); - return (const hb_shaper_pair_t *) all_shapers; - } - - /* Not found; allocate one. */ - shapers = (hb_shaper_pair_t *) malloc (sizeof (all_shapers)); - if (unlikely (!shapers)) { - (void) hb_atomic_ptr_cmpexch (&static_shapers, NULL, &all_shapers[0]); - return (const hb_shaper_pair_t *) all_shapers; - } - - memcpy (shapers, all_shapers, sizeof (all_shapers)); - - /* Reorder shaper list to prefer requested shapers. */ - unsigned int i = 0; - char *end, *p = env; - for (;;) { - end = strchr (p, ','); - if (!end) - end = p + strlen (p); - - for (unsigned int j = i; j < ARRAY_LENGTH (all_shapers); j++) - if (end - p == (int) strlen (shapers[j].name) && - 0 == strncmp (shapers[j].name, p, end - p)) - { - /* Reorder this shaper to position i */ - struct hb_shaper_pair_t t = shapers[j]; - memmove (&shapers[i + 1], &shapers[i], sizeof (shapers[i]) * (j - i)); - shapers[i] = t; - i++; - } - - if (!*end) - break; - else - p = end + 1; - } - - if (!hb_atomic_ptr_cmpexch (&static_shapers, NULL, shapers)) { - free (shapers); - goto retry; - } - -#ifdef HB_USE_ATEXIT - atexit (free_static_shapers); /* First person registers atexit() callback. */ -#endif - } - - return shapers; -} |