* Google Author(s): Behdad Esfahbod
*/
-#include "hb-private.hh"
+#include "hb.hh"
+#include "hb-machinery.hh"
-#include "hb-mutex-private.hh"
-#include "hb-object-private.hh"
+#if !defined(HB_NO_SETLOCALE) && (!defined(HAVE_NEWLOCALE) || !defined(HAVE_USELOCALE))
+#define HB_NO_SETLOCALE 1
+#endif
+
+#ifndef HB_NO_SETLOCALE
#include <locale.h>
+#ifdef HAVE_XLOCALE_H
+#include <xlocale.h> // Needed on BSD/OS X for uselocale
+#endif
+
+#ifdef WIN32
+#define hb_locale_t _locale_t
+#else
+#define hb_locale_t locale_t
+#endif
+#define hb_setlocale setlocale
+#define hb_uselocale uselocale
+
+#else
+
+#define hb_locale_t void *
+#define hb_setlocale(Category, Locale) "C"
+#define hb_uselocale(Locale) ((hb_locale_t) 0)
+
+#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;
+
+ 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) == static_cast<size_t>(p - c)) do { u.opts.symbol = true; } while (0)
+
+ OPTION ("uniscribe-bug-compatible", uniscribe_bug_compatible);
- char *c = getenv ("HB_OPTIONS");
- u.opts.uniscribe_bug_compatible = c && strstr (c, "uniscribe-bug-compatible");
+#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): 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
**/
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: (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
**/
/**
* 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
**/
/**
* 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
**/
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
struct hb_language_item_t *next;
hb_language_t lang;
- inline bool operator == (const char *s) const {
- return lang_equal (lang, s);
- }
+ 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];
+ 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) hb_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 () { hb_free ((void *) lang); }
};
-/* Thread-safe lock-free language list */
+/* Thread-safe lockfree 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)
+static inline 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 ();
+ hb_free (first_lang);
+ first_lang = next;
}
}
-#endif
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);
+ hb_language_item_t *first_lang = 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));
+ hb_language_item_t *lang = (hb_language_item_t *) hb_calloc (1, sizeof (hb_language_item_t));
if (unlikely (!lang))
- return NULL;
+ return nullptr;
lang->next = first_lang;
*lang = key;
+ if (unlikely (!lang->lang))
+ {
+ hb_free (lang);
+ return nullptr;
+ }
- if (!hb_atomic_ptr_cmpexch (&langs, first_lang, lang)) {
- lang->finish ();
- free (lang);
+ if (unlikely (!langs.cmpexch (first_lang, lang)))
+ {
+ lang->fini ();
+ hb_free (lang);
goto retry;
}
-#ifdef 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;
}
/**
* 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. */
char strbuf[64];
- len = MIN (len, (int) sizeof (strbuf) - 1);
+ len = hb_min (len, (int) sizeof (strbuf) - 1);
memcpy (strbuf, str, len);
strbuf[len] = '\0';
item = lang_find_or_insert (strbuf);
/**
* 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
const char *
hb_language_to_string (hb_language_t language)
{
- /* This is actually NULL-safe! */
+ if (unlikely (!language)) return nullptr;
+
return language->s;
}
/**
* hb_language_get_default:
*
- *
+ * Fetch the default language from current locale.
*
- * Return value: (transfer none):
+ * <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.</note>
+ *
+ * Return value: (transfer none): The default language of the locale as
+ * an #hb_language_t
*
* 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 (hb_setlocale (LC_CTYPE, nullptr), -1);
+ (void) default_language.cmpexch (HB_LANGUAGE_INVALID, language);
}
- return default_language;
+ return language;
}
/**
* 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.
+ * 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('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;
/**
* hb_script_from_string:
* @str: (array length=len) (element-type uint8_t): a string representing an
- * ISO 15924 tag.
+ * 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.
+ * Return value:
+ * An #hb_script_t corresponding to the ISO 15924 tag.
*
* Since: 0.9.2
**/
/**
* hb_script_to_iso15924_tag:
- * @script: an #hb_script_ to convert.
+ * @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
**/
/**
* 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
**/
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:
- return HB_DIRECTION_RTL;
- }
+ /* Unicode-11.0 additions */
+ case HB_SCRIPT_HANIFI_ROHINGYA:
+ case HB_SCRIPT_OLD_SOGDIAN:
+ case HB_SCRIPT_SOGDIAN:
- return HB_DIRECTION_LTR;
-}
+ /* Unicode-12.0 additions */
+ case HB_SCRIPT_ELYMAIC:
+ /* Unicode-13.0 additions */
+ case HB_SCRIPT_CHORASMIAN:
+ case HB_SCRIPT_YEZIDI:
-/* hb_user_data_array_t */
+ /* Unicode-14.0 additions */
+ case HB_SCRIPT_OLD_UYGHUR:
-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;
+ return HB_DIRECTION_RTL;
- 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;
-}
+ /* https://github.com/harfbuzz/harfbuzz/issues/1000 */
+ case HB_SCRIPT_OLD_HUNGARIAN:
+ case HB_SCRIPT_OLD_ITALIC:
+ case HB_SCRIPT_RUNIC:
-void *
-hb_user_data_array_t::get (hb_user_data_key_t *key)
-{
- hb_user_data_item_t item = {NULL, NULL, NULL};
+ return HB_DIRECTION_INVALID;
+ }
- return items.find (key, &item, lock) ? item.data : NULL;
+ return HB_DIRECTION_LTR;
}
/* 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.
- * @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.
*
*
* Returns library version as a string with three components.
*
- * Return value: library version string.
+ * Return value: Library version string
*
* Since: 0.9.2
**/
const char *
-hb_version_string (void)
+hb_version_string ()
{
return 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
**/
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;
+ /* Intentionally use hb_parse_int inside instead of hb_parse_uint,
+ * such that -1 turns into "big number"... */
+ int v;
+ if (unlikely (!hb_parse_int (pp, end, &v))) return false;
*pv = v;
- *pp += pend - p;
return true;
}
static bool
-parse_float (const char **pp, const char *end, float *pv)
+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;
- float v;
-
- errno = 0;
- v = strtod (p, &pend);
- if (errno || p == pend)
- return false;
+ /* Intentionally use hb_parse_int inside instead of hb_parse_uint,
+ * such that -1 turns into "big number"... */
+ int v;
+ if (unlikely (!hb_parse_int (pp, end, &v))) return false;
*pv = v;
- *pp += pend - p;
return true;
}
static bool
-parse_bool (const char **pp, const char *end, unsigned int *pv)
+parse_bool (const char **pp, const char *end, uint32_t *pv)
{
parse_space (pp, end);
(*pp)++;
/* CSS allows on/off as aliases 1/0. */
- if (*pp - p == 2 || 0 == strncmp (p, "on", 2))
+ if (*pp - p == 2
+ && TOLOWER (p[0]) == 'o'
+ && TOLOWER (p[1]) == 'n')
*pv = 1;
- else if (*pp - p == 3 || 0 == strncmp (p, "off", 2))
+ else if (*pp - p == 3
+ && TOLOWER (p[0]) == 'o'
+ && TOLOWER (p[1]) == 'f'
+ && TOLOWER (p[2]) == 'f')
*pv = 0;
else
return false;
}
const char *p = *pp;
- while (*pp < end && ISALNUM(**pp))
+ while (*pp < end && (ISALNUM(**pp) || **pp == '_'))
(*pp)++;
if (p == *pp || *pp - p > 4)
bool has_start;
- feature->start = 0;
- feature->end = (unsigned int) -1;
+ 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, ':')) {
+ if (parse_char (pp, end, ':') || parse_char (pp, end, ';')) {
parse_uint (pp, end, &feature->end);
} else {
if (has_start)
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_uint (pp, end, &feature->value) ||
- parse_bool (pp, end, &feature->value);
+ 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 eqaul-sign is ok, but not required. */
+ * A value without an equal-sign is ok, but not required. */
return !had_equal || had_value;
}
*
* Parses a string into a #hb_feature_t.
*
- * TODO: document the syntax here.
+ * The format for specifying feature strings follows. All valid CSS
+ * font-feature-settings values other than 'normal' and the global values are
+ * also accepted, though not documented below. CSS string escapes are not
+ * supported.
+ *
+ * The range indices refer to the positions between Unicode characters. The
+ * position before the first character is always 0.
+ *
+ * The format is Python-esque. Here is how it all works:
+ *
+ * <informaltable pgwide='1' align='left' frame='none'>
+ * <tgroup cols='5'>
+ * <thead>
+ * <row><entry>Syntax</entry> <entry>Value</entry> <entry>Start</entry> <entry>End</entry></row>
+ * </thead>
+ * <tbody>
+ * <row><entry>Setting value:</entry></row>
+ * <row><entry>kern</entry> <entry>1</entry> <entry>0</entry> <entry>∞</entry> <entry>Turn feature on</entry></row>
+ * <row><entry>+kern</entry> <entry>1</entry> <entry>0</entry> <entry>∞</entry> <entry>Turn feature on</entry></row>
+ * <row><entry>-kern</entry> <entry>0</entry> <entry>0</entry> <entry>∞</entry> <entry>Turn feature off</entry></row>
+ * <row><entry>kern=0</entry> <entry>0</entry> <entry>0</entry> <entry>∞</entry> <entry>Turn feature off</entry></row>
+ * <row><entry>kern=1</entry> <entry>1</entry> <entry>0</entry> <entry>∞</entry> <entry>Turn feature on</entry></row>
+ * <row><entry>aalt=2</entry> <entry>2</entry> <entry>0</entry> <entry>∞</entry> <entry>Choose 2nd alternate</entry></row>
+ * <row><entry>Setting index:</entry></row>
+ * <row><entry>kern[]</entry> <entry>1</entry> <entry>0</entry> <entry>∞</entry> <entry>Turn feature on</entry></row>
+ * <row><entry>kern[:]</entry> <entry>1</entry> <entry>0</entry> <entry>∞</entry> <entry>Turn feature on</entry></row>
+ * <row><entry>kern[5:]</entry> <entry>1</entry> <entry>5</entry> <entry>∞</entry> <entry>Turn feature on, partial</entry></row>
+ * <row><entry>kern[:5]</entry> <entry>1</entry> <entry>0</entry> <entry>5</entry> <entry>Turn feature on, partial</entry></row>
+ * <row><entry>kern[3:5]</entry> <entry>1</entry> <entry>3</entry> <entry>5</entry> <entry>Turn feature on, range</entry></row>
+ * <row><entry>kern[3]</entry> <entry>1</entry> <entry>3</entry> <entry>3+1</entry> <entry>Turn feature on, single char</entry></row>
+ * <row><entry>Mixing it all:</entry></row>
+ * <row><entry>aalt[3:5]=2</entry> <entry>2</entry> <entry>3</entry> <entry>5</entry> <entry>Turn 2nd alternate on for range</entry></row>
+ * </tbody>
+ * </tgroup>
+ * </informaltable>
*
* Return value:
- * %true if @str is successfully parsed, %false otherwise.
+ * %true if @str is successfully parsed, %false otherwise
*
* Since: 0.9.5
**/
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 += MAX (0, snprintf (s + len, ARRAY_LENGTH (s) - len, "%u", 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)
- len += MAX (0, snprintf (s + len, ARRAY_LENGTH (s) - len, "%u", feature->end));
+ if (feature->end != HB_FEATURE_GLOBAL_END)
+ len += hb_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));
+ len += hb_max (0, snprintf (s + len, ARRAY_LENGTH (s) - len, "%u", feature->value));
}
assert (len < ARRAY_LENGTH (s));
- len = MIN (len, size - 1);
+ len = hb_min (len, size - 1);
memcpy (buf, s, len);
buf[len] = '\0';
}
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);
+ double v;
+ if (unlikely (!hb_parse_double (pp, end, &v))) return false;
+
+ variation->value = v;
+ return true;
}
static bool
/**
* 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
*/
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): 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
*/
while (len && s[len - 1] == ' ')
len--;
s[len++] = '=';
- len += MAX (0, snprintf (s + len, ARRAY_LENGTH (s) - len, "%g", variation->value));
+
+ 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 = MIN (len, size - 1);
+ len = hb_min (len, size - 1);
memcpy (buf, s, len);
buf[len] = '\0';
}
+
+/**
+ * hb_color_get_alpha:
+ * @color: an #hb_color_t we are interested in its channels.
+ *
+ * Fetches the alpha channel of the given @color.
+ *
+ * Return value: Alpha channel value
+ *
+ * Since: 2.1.0
+ */
+uint8_t
+(hb_color_get_alpha) (hb_color_t color)
+{
+ return hb_color_get_alpha (color);
+}
+
+/**
+ * hb_color_get_red:
+ * @color: an #hb_color_t we are interested in its channels.
+ *
+ * Fetches the red channel of the given @color.
+ *
+ * Return value: Red channel value
+ *
+ * Since: 2.1.0
+ */
+uint8_t
+(hb_color_get_red) (hb_color_t color)
+{
+ return hb_color_get_red (color);
+}
+
+/**
+ * hb_color_get_green:
+ * @color: an #hb_color_t we are interested in its channels.
+ *
+ * Fetches the green channel of the given @color.
+ *
+ * Return value: Green channel value
+ *
+ * Since: 2.1.0
+ */
+uint8_t
+(hb_color_get_green) (hb_color_t color)
+{
+ return hb_color_get_green (color);
+}
+
+/**
+ * hb_color_get_blue:
+ * @color: an #hb_color_t we are interested in its channels.
+ *
+ * Fetches the blue channel of the given @color.
+ *
+ * Return value: Blue channel value
+ *
+ * Since: 2.1.0
+ */
+uint8_t
+(hb_color_get_blue) (hb_color_t color)
+{
+ return hb_color_get_blue (color);
+}
+
+
+/* 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