* Google Author(s): Behdad Esfahbod
*/
-#include "hb-private.hh"
+#include "hb.hh"
-#include "hb-mutex-private.hh"
-#include "hb-object-private.hh"
+#include "hb-machinery.hh"
#include <locale.h>
+#ifdef HAVE_XLOCALE_H
+#include <xlocale.h>
+#endif
+
+
+/**
+ * SECTION:hb-common
+ * @title: hb-common
+ * @short_description: Common data types
+ * @include: hb.h
+ *
+ * Common data types used across HarfBuzz are defined here.
+ **/
/* hb_options_t */
-hb_options_union_t _hb_options;
+hb_atomic_int_t _hb_options;
void
-_hb_options_init (void)
+_hb_options_init ()
{
hb_options_union_t u;
u.i = 0;
- u.opts.initialized = 1;
+ u.opts.initialized = true;
- char *c = getenv ("HB_OPTIONS");
- u.opts.uniscribe_bug_compatible = c && strstr (c, "uniscribe-bug-compatible");
+ const char *c = getenv ("HB_OPTIONS");
+ if (c)
+ {
+ while (*c)
+ {
+ const char *p = strchr (c, ':');
+ if (!p)
+ p = c + strlen (c);
+
+#define OPTION(name, symbol) \
+ if (0 == strncmp (c, name, p - c) && strlen (name) == p - c) u.opts.symbol = true;
+
+ OPTION ("uniscribe-bug-compatible", uniscribe_bug_compatible);
+ OPTION ("aat", aat);
+
+#undef OPTION
+
+ c = *p ? p + 1 : p;
+ }
+
+ }
/* This is idempotent and threadsafe. */
- _hb_options = u;
+ _hb_options.set_relaxed (u.i);
}
/**
* hb_tag_from_string:
- * @str: (array length=len) (element-type uint8_t):
- * @len:
+ * @str: (array length=len) (element-type uint8_t):
+ * @len:
*
- *
*
- * Return value:
+ *
+ * Return value:
*
* Since: 0.9.2
**/
for (; i < 4; i++)
tag[i] = ' ';
- return HB_TAG_CHAR4 (tag);
+ return HB_TAG (tag[0], tag[1], tag[2], tag[3]);
}
/**
* hb_tag_to_string:
- * @tag:
- * @buf: (array fixed-size=4):
+ * @tag:
+ * @buf: (out caller-allocates) (array fixed-size=4) (element-type uint8_t):
+ *
*
- *
*
* Since: 0.9.5
**/
/**
* hb_direction_from_string:
- * @str: (array length=len) (element-type uint8_t):
- * @len:
+ * @str: (array length=len) (element-type uint8_t):
+ * @len:
*
- *
*
- * Return value:
+ *
+ * Return value:
*
* Since: 0.9.2
**/
/**
* hb_direction_to_string:
- * @direction:
+ * @direction:
+ *
*
- *
*
- * Return value: (transfer none):
+ * Return value: (transfer none):
*
* Since: 0.9.2
**/
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',
+ 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
const unsigned char *p1 = (const unsigned char *) v1;
const unsigned char *p2 = (const unsigned char *) v2;
- while (*p1 && *p1 == canon_map[*p2])
- p1++, p2++;
+ while (*p1 && *p1 == canon_map[*p2]) {
+ p1++;
+ p2++;
+ }
return *p1 == canon_map[*p2];
}
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];
+ 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.
+ */
+ size_t len = strlen(s) + 1;
+ lang = (hb_language_t) malloc(len);
+ if (likely (lang))
+ {
+ memcpy((unsigned char *) lang, s, len);
+ for (unsigned char *p = (unsigned char *) lang; *p; p++)
+ *p = canon_map[*p];
+ }
return *this;
}
- void finish (void) { free ((void *) lang); }
+ void fini () { free ((void *) lang); }
};
/* Thread-safe lock-free language list */
-static hb_language_item_t *langs;
+static hb_atomic_ptr_t <hb_language_item_t> langs;
-#ifdef HB_USE_ATEXIT
-static
-void free_langs (void)
+#if HB_USE_ATEXIT
+static void
+free_langs ()
{
- while (langs) {
- hb_language_item_t *next = langs->next;
- langs->finish ();
- free (langs);
- langs = next;
+retry:
+ hb_language_item_t *first_lang = langs;
+ if (unlikely (!langs.cmpexch (first_lang, nullptr)))
+ goto retry;
+
+ while (first_lang) {
+ hb_language_item_t *next = first_lang->next;
+ first_lang->fini ();
+ free (first_lang);
+ first_lang = next;
}
}
#endif
lang_find_or_insert (const char *key)
{
retry:
- hb_language_item_t *first_lang = (hb_language_item_t *) hb_atomic_ptr_get (&langs);
+ hb_language_item_t *first_lang = langs;
for (hb_language_item_t *lang = first_lang; lang; lang = lang->next)
if (*lang == key)
/* 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;
+ return nullptr;
lang->next = first_lang;
*lang = key;
+ if (unlikely (!lang->lang))
+ {
+ free (lang);
+ return nullptr;
+ }
- if (!hb_atomic_ptr_cmpexch (&langs, first_lang, lang)) {
- lang->finish ();
+ if (unlikely (!langs.cmpexch (first_lang, lang)))
+ {
+ lang->fini ();
free (lang);
goto retry;
}
-#ifdef HB_USE_ATEXIT
+#if HB_USE_ATEXIT
if (!first_lang)
atexit (free_langs); /* First person registers atexit() callback. */
#endif
/**
* hb_language_from_string:
* @str: (array length=len) (element-type uint8_t): a string representing
- * ISO 639 language code
+ * a BCP 47 language tag
* @len: length of the @str, or -1 if it is %NULL-terminated.
*
- * Converts @str representing an ISO 639 language code 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 ISO 639 language code.
+ * The #hb_language_t corresponding to the BCP 47 language tag.
*
* Since: 0.9.2
**/
if (!str || !len || !*str)
return HB_LANGUAGE_INVALID;
- hb_language_item_t *item = NULL;
+ hb_language_item_t *item = nullptr;
if (len >= 0)
{
/* NUL-terminate it. */
const char *
hb_language_to_string (hb_language_t language)
{
- /* This is actually NULL-safe! */
+ /* This is actually nullptr-safe! */
return language->s;
}
/**
* hb_language_get_default:
*
- *
+ * Get default language from current locale.
+ *
+ * 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.
*
* Return value: (transfer none):
*
* Since: 0.9.2
**/
hb_language_t
-hb_language_get_default (void)
+hb_language_get_default ()
{
- static hb_language_t default_language = HB_LANGUAGE_INVALID;
+ static hb_atomic_ptr_t <hb_language_t> default_language;
- 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);
- (void) hb_atomic_ptr_cmpexch (&default_language, HB_LANGUAGE_INVALID, language);
+ hb_language_t language = default_language;
+ if (unlikely (language == HB_LANGUAGE_INVALID))
+ {
+ language = hb_language_from_string (setlocale (LC_CTYPE, nullptr), -1);
+ (void) default_language.cmpexch (HB_LANGUAGE_INVALID, language);
}
- return default_language;
+ return language;
}
*
* Converts an ISO 15924 script tag to a corresponding #hb_script_t.
*
- * Return value:
+ * Return value:
* An #hb_script_t corresponding to the ISO 15924 tag.
*
* Since: 0.9.2
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/ */
+ /* Script variants from https://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;
* corresponding #hb_script_t. Shorthand for hb_tag_from_string() then
* hb_script_from_iso15924_tag().
*
- * Return value:
+ * Return value:
* An #hb_script_t corresponding to the ISO 15924 tag.
*
* Since: 0.9.2
/**
* hb_script_get_horizontal_direction:
- * @script:
+ * @script:
*
- *
*
- * Return value:
+ *
+ * Return value:
*
* Since: 0.9.2
**/
hb_direction_t
hb_script_get_horizontal_direction (hb_script_t script)
{
- /* http://goo.gl/x9ilM */
+ /* https://docs.google.com/spreadsheets/d/1Y90M0Ie3MUJ6UVCRDOypOtijlMDLNNyyLk36T6iMu0o */
switch ((hb_tag_t) script)
{
/* Unicode-1.1 additions */
case HB_SCRIPT_PSALTER_PAHLAVI:
/* Unicode-8.0 additions */
- case HB_SCRIPT_OLD_HUNGARIAN:
+ case HB_SCRIPT_HATRAN:
+
+ /* Unicode-9.0 additions */
+ case HB_SCRIPT_ADLAM:
+
+ /* Unicode-11.0 additions */
+ case HB_SCRIPT_HANIFI_ROHINGYA:
+ case HB_SCRIPT_OLD_SOGDIAN:
+ case HB_SCRIPT_SOGDIAN:
return HB_DIRECTION_RTL;
+
+
+ /* https://github.com/harfbuzz/harfbuzz/issues/1000 */
+ case HB_SCRIPT_OLD_HUNGARIAN:
+ case HB_SCRIPT_OLD_ITALIC:
+ case HB_SCRIPT_RUNIC:
+
+ return HB_DIRECTION_INVALID;
}
return HB_DIRECTION_LTR;
void *
hb_user_data_array_t::get (hb_user_data_key_t *key)
{
- hb_user_data_item_t item = {NULL, NULL, NULL};
+ hb_user_data_item_t item = {nullptr, nullptr, nullptr};
- return items.find (key, &item, lock) ? item.data : NULL;
+ return items.find (key, &item, lock) ? item.data : nullptr;
}
/* hb_version */
+
+/**
+ * SECTION:hb-version
+ * @title: hb-version
+ * @short_description: Information about the version of HarfBuzz in use
+ * @include: hb.h
+ *
+ * These functions and macros allow accessing version of the HarfBuzz
+ * library used at compile- as well as run-time, and to direct code
+ * conditionally based on those versions, again, at compile- or run-time.
+ **/
+
+
/**
* hb_version:
* @major: (out): Library major version component.
* Since: 0.9.2
**/
const char *
-hb_version_string (void)
+hb_version_string ()
{
return HB_VERSION_STRING;
}
/**
* hb_version_atleast:
- * @major:
- * @minor:
- * @micro:
+ * @major:
+ * @minor:
+ * @micro:
+ *
*
- *
*
- * Return value:
+ * Return value:
*
* Since: 0.9.30
**/
{
return HB_VERSION_ATLEAST (major, minor, micro);
}
+
+
+
+/* hb_feature_t and hb_variation_t */
+
+static bool
+parse_space (const char **pp, const char *end)
+{
+ while (*pp < end && ISSPACE (**pp))
+ (*pp)++;
+ return true;
+}
+
+static bool
+parse_char (const char **pp, const char *end, char c)
+{
+ parse_space (pp, end);
+
+ if (*pp == end || **pp != c)
+ return false;
+
+ (*pp)++;
+ return true;
+}
+
+static bool
+parse_uint (const char **pp, const char *end, unsigned int *pv)
+{
+ char buf[32];
+ unsigned int len = MIN (ARRAY_LENGTH (buf) - 1, (unsigned int) (end - *pp));
+ strncpy (buf, *pp, len);
+ buf[len] = '\0';
+
+ char *p = buf;
+ char *pend = p;
+ unsigned int v;
+
+ /* Intentionally use strtol instead of strtoul, such that
+ * -1 turns into "big number"... */
+ errno = 0;
+ v = strtol (p, &pend, 0);
+ if (errno || p == pend)
+ return false;
+
+ *pv = v;
+ *pp += pend - p;
+ return true;
+}
+
+static bool
+parse_uint32 (const char **pp, const char *end, uint32_t *pv)
+{
+ char buf[32];
+ unsigned int len = MIN (ARRAY_LENGTH (buf) - 1, (unsigned int) (end - *pp));
+ strncpy (buf, *pp, len);
+ buf[len] = '\0';
+
+ char *p = buf;
+ char *pend = p;
+ unsigned int v;
+
+ /* Intentionally use strtol instead of strtoul, such that
+ * -1 turns into "big number"... */
+ errno = 0;
+ v = strtol (p, &pend, 0);
+ if (errno || p == pend)
+ return false;
+
+ *pv = v;
+ *pp += pend - p;
+ return true;
+}
+
+#if defined (HAVE_NEWLOCALE) && defined (HAVE_STRTOD_L)
+#define USE_XLOCALE 1
+#define HB_LOCALE_T locale_t
+#define HB_CREATE_LOCALE(locName) newlocale (LC_ALL_MASK, locName, nullptr)
+#define HB_FREE_LOCALE(loc) freelocale (loc)
+#elif defined(_MSC_VER)
+#define USE_XLOCALE 1
+#define HB_LOCALE_T _locale_t
+#define HB_CREATE_LOCALE(locName) _create_locale (LC_ALL, locName)
+#define HB_FREE_LOCALE(loc) _free_locale (loc)
+#define strtod_l(a, b, c) _strtod_l ((a), (b), (c))
+#endif
+
+#ifdef USE_XLOCALE
+
+#if HB_USE_ATEXIT
+static void free_static_C_locale ();
+#endif
+
+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 C_locale = HB_CREATE_LOCALE ("C");
+
+#if HB_USE_ATEXIT
+ atexit (free_static_C_locale);
+#endif
+
+ return C_locale;
+ }
+ static void destroy (HB_LOCALE_T p)
+ {
+ HB_FREE_LOCALE (p);
+ }
+ static HB_LOCALE_T get_null ()
+ {
+ return nullptr;
+ }
+} static_C_locale;
+
+#if HB_USE_ATEXIT
+static
+void free_static_C_locale ()
+{
+ static_C_locale.free_instance ();
+}
+#endif
+
+static HB_LOCALE_T
+get_C_locale ()
+{
+ return static_C_locale.get_unconst ();
+}
+#endif /* USE_XLOCALE */
+
+static bool
+parse_float (const char **pp, const char *end, float *pv)
+{
+ char buf[32];
+ unsigned int len = MIN (ARRAY_LENGTH (buf) - 1, (unsigned int) (end - *pp));
+ strncpy (buf, *pp, len);
+ buf[len] = '\0';
+
+ char *p = buf;
+ char *pend = p;
+ float v;
+
+ errno = 0;
+#ifdef USE_XLOCALE
+ v = strtod_l (p, &pend, get_C_locale ());
+#else
+ v = strtod (p, &pend);
+#endif
+ if (errno || p == pend)
+ return false;
+
+ *pv = v;
+ *pp += pend - p;
+ return true;
+}
+
+static bool
+parse_bool (const char **pp, const char *end, uint32_t *pv)
+{
+ parse_space (pp, end);
+
+ const char *p = *pp;
+ while (*pp < end && ISALPHA(**pp))
+ (*pp)++;
+
+ /* CSS allows on/off as aliases 1/0. */
+ if (*pp - p == 2 && 0 == strncmp (p, "on", 2))
+ *pv = 1;
+ else if (*pp - p == 3 && 0 == strncmp (p, "off", 3))
+ *pv = 0;
+ else
+ return false;
+
+ return true;
+}
+
+/* hb_feature_t */
+
+static bool
+parse_feature_value_prefix (const char **pp, const char *end, hb_feature_t *feature)
+{
+ if (parse_char (pp, end, '-'))
+ feature->value = 0;
+ else {
+ parse_char (pp, end, '+');
+ feature->value = 1;
+ }
+
+ return true;
+}
+
+static bool
+parse_tag (const char **pp, const char *end, hb_tag_t *tag)
+{
+ parse_space (pp, end);
+
+ char quote = 0;
+
+ if (*pp < end && (**pp == '\'' || **pp == '"'))
+ {
+ quote = **pp;
+ (*pp)++;
+ }
+
+ const char *p = *pp;
+ while (*pp < end && (ISALNUM(**pp) || **pp == '_'))
+ (*pp)++;
+
+ if (p == *pp || *pp - p > 4)
+ return false;
+
+ *tag = hb_tag_from_string (p, *pp - p);
+
+ if (quote)
+ {
+ /* CSS expects exactly four bytes. And we only allow quotations for
+ * CSS compatibility. So, enforce the length. */
+ if (*pp - p != 4)
+ return false;
+ if (*pp == end || **pp != quote)
+ return false;
+ (*pp)++;
+ }
+
+ return true;
+}
+
+static bool
+parse_feature_indices (const char **pp, const char *end, hb_feature_t *feature)
+{
+ parse_space (pp, end);
+
+ bool has_start;
+
+ feature->start = HB_FEATURE_GLOBAL_START;
+ feature->end = HB_FEATURE_GLOBAL_END;
+
+ if (!parse_char (pp, end, '['))
+ return true;
+
+ has_start = parse_uint (pp, end, &feature->start);
+
+ if (parse_char (pp, end, ':') || parse_char (pp, end, ';')) {
+ parse_uint (pp, end, &feature->end);
+ } else {
+ if (has_start)
+ feature->end = feature->start + 1;
+ }
+
+ return parse_char (pp, end, ']');
+}
+
+static bool
+parse_feature_value_postfix (const char **pp, const char *end, hb_feature_t *feature)
+{
+ bool had_equal = parse_char (pp, end, '=');
+ bool had_value = parse_uint32 (pp, end, &feature->value) ||
+ parse_bool (pp, end, &feature->value);
+ /* CSS doesn't use equal-sign between tag and value.
+ * If there was an equal-sign, then there *must* be a value.
+ * A value without an equal-sign is ok, but not required. */
+ return !had_equal || had_value;
+}
+
+static bool
+parse_one_feature (const char **pp, const char *end, hb_feature_t *feature)
+{
+ return parse_feature_value_prefix (pp, end, feature) &&
+ parse_tag (pp, end, &feature->tag) &&
+ parse_feature_indices (pp, end, feature) &&
+ parse_feature_value_postfix (pp, end, feature) &&
+ parse_space (pp, end) &&
+ *pp == end;
+}
+
+/**
+ * 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
+ * @feature: (out): the #hb_feature_t to initialize with the parsed values
+ *
+ * Parses a string into a #hb_feature_t.
+ *
+ * TODO: document the syntax here.
+ *
+ * Return value:
+ * %true if @str is successfully parsed, %false otherwise.
+ *
+ * Since: 0.9.5
+ **/
+hb_bool_t
+hb_feature_from_string (const char *str, int len,
+ hb_feature_t *feature)
+{
+ hb_feature_t feat;
+
+ if (len < 0)
+ len = strlen (str);
+
+ if (likely (parse_one_feature (&str, str + len, &feat)))
+ {
+ if (feature)
+ *feature = feat;
+ return true;
+ }
+
+ if (feature)
+ memset (feature, 0, sizeof (*feature));
+ return false;
+}
+
+/**
+ * hb_feature_to_string:
+ * @feature: an #hb_feature_t to convert
+ * @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
+ * understood by hb_feature_from_string(). The client in responsible for
+ * allocating big enough size for @buf, 128 bytes is more than enough.
+ *
+ * Since: 0.9.5
+ **/
+void
+hb_feature_to_string (hb_feature_t *feature,
+ char *buf, unsigned int size)
+{
+ if (unlikely (!size)) return;
+
+ char s[128];
+ unsigned int len = 0;
+ if (feature->value == 0)
+ s[len++] = '-';
+ hb_tag_to_string (feature->tag, s + len);
+ len += 4;
+ while (len && s[len - 1] == ' ')
+ len--;
+ if (feature->start != 0 || feature->end != (unsigned int) -1)
+ {
+ s[len++] = '[';
+ if (feature->start)
+ len += 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)
+ len += MAX (0, snprintf (s + len, ARRAY_LENGTH (s) - len, "%u", feature->end));
+ }
+ s[len++] = ']';
+ }
+ if (feature->value > 1)
+ {
+ s[len++] = '=';
+ len += MAX (0, snprintf (s + len, ARRAY_LENGTH (s) - len, "%u", feature->value));
+ }
+ assert (len < ARRAY_LENGTH (s));
+ len = MIN (len, size - 1);
+ memcpy (buf, s, len);
+ buf[len] = '\0';
+}
+
+/* hb_variation_t */
+
+static bool
+parse_variation_value (const char **pp, const char *end, hb_variation_t *variation)
+{
+ parse_char (pp, end, '='); /* Optional. */
+ return parse_float (pp, end, &variation->value);
+}
+
+static bool
+parse_one_variation (const char **pp, const char *end, hb_variation_t *variation)
+{
+ return parse_tag (pp, end, &variation->tag) &&
+ parse_variation_value (pp, end, variation) &&
+ parse_space (pp, end) &&
+ *pp == end;
+}
+
+/**
+ * hb_variation_from_string:
+ *
+ * Since: 1.4.2
+ */
+hb_bool_t
+hb_variation_from_string (const char *str, int len,
+ hb_variation_t *variation)
+{
+ hb_variation_t var;
+
+ if (len < 0)
+ len = strlen (str);
+
+ if (likely (parse_one_variation (&str, str + len, &var)))
+ {
+ if (variation)
+ *variation = var;
+ return true;
+ }
+
+ if (variation)
+ memset (variation, 0, sizeof (*variation));
+ return false;
+}
+
+/**
+ * hb_variation_to_string:
+ *
+ * Since: 1.4.2
+ */
+void
+hb_variation_to_string (hb_variation_t *variation,
+ char *buf, unsigned int size)
+{
+ if (unlikely (!size)) return;
+
+ char s[128];
+ unsigned int len = 0;
+ hb_tag_to_string (variation->tag, s + len);
+ len += 4;
+ while (len && s[len - 1] == ' ')
+ len--;
+ s[len++] = '=';
+ len += MAX (0, snprintf (s + len, ARRAY_LENGTH (s) - len, "%g", (double) variation->value));
+
+ assert (len < ARRAY_LENGTH (s));
+ len = MIN (len, size - 1);
+ memcpy (buf, s, len);
+ buf[len] = '\0';
+}
+
+/* If there is no visibility control, then hb-static.cc will NOT
+ * define anything. Instead, we get it to define one set in here
+ * only, so only libharfbuzz.so defines them, not other libs. */
+#ifdef HB_NO_VISIBILITY
+#undef HB_NO_VISIBILITY
+#include "hb-static.cc"
+#define HB_NO_VISIBILITY 1
+#endif
projects / platform / upstream / harfbuzz.git / blobdiff