* 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
#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) == p - c) u.opts.symbol = true;
+
+ OPTION ("uniscribe-bug-compatible", uniscribe_bug_compatible);
+ OPTION ("aat", aat);
- 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):
+ * @len:
*
- *
*
- * Return value:
+ *
+ * Return value:
*
* Since: 0.9.2
**/
/**
* hb_tag_to_string:
- * @tag:
- * @buf: (out caller-allocates) (array fixed-size=4) (element-type uint8_t):
+ * @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
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) {
+ 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 finish() below.
+ 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;
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
+#if HB_USE_ATEXIT
static void
-free_langs (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)
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
**/
/**
* 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)) {
+ hb_language_t language = default_language;
+ if (unlikely (language == HB_LANGUAGE_INVALID))
+ {
language = hb_language_from_string (setlocale (LC_CTYPE, nullptr), -1);
- (void) hb_atomic_ptr_cmpexch (&default_language, HB_LANGUAGE_INVALID, language);
+ (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 */
/* Unicode-8.0 additions */
case HB_SCRIPT_HATRAN:
- case HB_SCRIPT_OLD_HUNGARIAN:
/* 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;
/* 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
**/
/* Intentionally use strtol instead of strtoul, such that
* -1 turns into "big number"... */
errno = 0;
- v = strtol (p, &pend, 0);
+ v = strtol (p, &pend, 10);
if (errno || p == pend)
return false;
/* Intentionally use strtol instead of strtoul, such that
* -1 turns into "big number"... */
errno = 0;
- v = strtol (p, &pend, 0);
+ v = strtol (p, &pend, 10);
if (errno || p == pend)
return false;
#ifdef USE_XLOCALE
-static HB_LOCALE_T C_locale;
-
-#ifdef HB_USE_ATEXIT
-static void
-free_C_locale (void)
-{
- if (C_locale)
- HB_FREE_LOCALE (C_locale);
-}
+#if HB_USE_ATEXIT
+static void free_static_C_locale ();
#endif
-static HB_LOCALE_T
-get_C_locale (void)
+static struct hb_C_locale_lazy_loader_t : hb_lazy_loader_t<hb_remove_pointer (HB_LOCALE_T),
+ hb_C_locale_lazy_loader_t>
{
-retry:
- HB_LOCALE_T C = (HB_LOCALE_T) hb_atomic_ptr_get (&C_locale);
-
- if (unlikely (!C))
+ static HB_LOCALE_T create ()
{
- C = HB_CREATE_LOCALE ("C");
-
- if (!hb_atomic_ptr_cmpexch (&C_locale, nullptr, C))
- {
- HB_FREE_LOCALE (C_locale);
- goto retry;
- }
+ HB_LOCALE_T C_locale = HB_CREATE_LOCALE ("C");
-#ifdef HB_USE_ATEXIT
- atexit (free_C_locale); /* First person registers atexit() callback. */
+#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;
- return C;
+#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)
{
(*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", 3))
+ 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)
*
* 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.
while (len && s[len - 1] == ' ')
len--;
s[len++] = '=';
- len += MAX (0, snprintf (s + len, ARRAY_LENGTH (s) - len, "%g", variation->value));
+ 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