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Rename HB_OT_INDIC_OPTIONS env var to HB_OPTIONS

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The Myanmar shaper now respects the uniscribe-bug-compatibility
option too.
This commit is contained in:
Behdad Esfahbod 2013-02-12 15:26:45 -05:00
parent 3a83d33ec0
commit bab02d339f
4 changed files with 54 additions and 55 deletions
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20
src/hb-common.cc
View File

@ -36,6 +36,24 @@
#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 */
@ -414,5 +432,3 @@ hb_version_check (unsigned int major,
{
return HB_VERSION_CHECK (major, minor, micro);
}

53
src/hb-ot-shape-complex-indic.cc
View File

@ -267,49 +267,6 @@ set_indic_properties (hb_glyph_info_t &info)
*/
/*
* Global Indic shaper options.
*/
struct indic_options_t
{
int initialized : 1;
int uniscribe_bug_compatible : 1;
};
union indic_options_union_t {
int i;
indic_options_t opts;
};
ASSERT_STATIC (sizeof (int) == sizeof (indic_options_union_t));
static indic_options_union_t
indic_options_init (void)
{
indic_options_union_t u;
u.i = 0;
u.opts.initialized = 1;
char *c = getenv ("HB_OT_INDIC_OPTIONS");
u.opts.uniscribe_bug_compatible = c && strstr (c, "uniscribe-bug-compatible");
return u;
}
static inline indic_options_t
indic_options (void)
{
static indic_options_union_t options;
if (unlikely (!options.i)) {
/* This is idempotent and threadsafe. */
options = indic_options_init ();
}
return options.opts;
}
/*
* Indic configurations. Note that we do not want to keep every single script-specific
* behavior in these tables necessarily. This should mainly be used for per-script
@ -484,7 +441,7 @@ static void
override_features_indic (hb_ot_shape_planner_t *plan)
{
/* Uniscribe does not apply 'kern'. */
if (indic_options ().uniscribe_bug_compatible)
if (hb_options ().uniscribe_bug_compatible)
plan->map.add_feature (HB_TAG('k','e','r','n'), 0, true);
plan->map.add_feature (HB_TAG('l','i','g','a'), 0, true);
@ -1044,7 +1001,7 @@ initial_reordering_standalone_cluster (const hb_ot_shape_plan_t *plan,
/* We treat NBSP/dotted-circle as if they are consonants, so we should just chain.
* Only if not in compatibility mode that is... */
if (indic_options ().uniscribe_bug_compatible)
if (hb_options ().uniscribe_bug_compatible)
{
/* For dotted-circle, this is what Uniscribe does:
* If dotted-circle is the last glyph, it just does nothing.
@ -1380,7 +1337,7 @@ final_reordering_syllable (const hb_ot_shape_plan_t *plan,
* Uniscribe doesn't do this.
* TEST: U+0930,U+094D,U+0915,U+094B,U+094D
*/
if (!indic_options ().uniscribe_bug_compatible &&
if (!hb_options ().uniscribe_bug_compatible &&
unlikely (is_halant_or_coeng (info[new_reph_pos]))) {
for (unsigned int i = base + 1; i < new_reph_pos; i++)
if (info[i].indic_category() == OT_M) {
@ -1484,7 +1441,7 @@ final_reordering_syllable (const hb_ot_shape_plan_t *plan,
/*
* Finish off the clusters and go home!
*/
if (indic_options ().uniscribe_bug_compatible)
if (hb_options ().uniscribe_bug_compatible)
{
/* Uniscribe merges the entire cluster.
* This means, half forms are submerged into the main consonants cluster.
@ -1600,7 +1557,7 @@ decompose_indic (const hb_ot_shape_normalize_context_t *c,
hb_codepoint_t glyph;
if (indic_options ().uniscribe_bug_compatible ||
if (hb_options ().uniscribe_bug_compatible ||
(c->font->get_glyph (ab, 0, &glyph) &&
indic_plan->pstf.would_substitute (&glyph, 1, true, c->font->face)))
{

5
src/hb-ot-shape-complex-myanmar.cc
View File

@ -128,12 +128,9 @@ override_features_myanmar (hb_ot_shape_planner_t *plan)
* Windows 8 has lookups for it. But testing suggests that
* Windows 8 Uniscribe is NOT applying it. It *is* applying
* 'mkmk' however.
*
* We want to apply it, since that's the right thing to do.
*/
#if 0
if (hb_options ().uniscribe_bug_compatible)
plan->map.add_feature (HB_TAG('m','a','r','k'), 0, true);
#endif
}

29
src/hb-private.hh
View File

@ -854,4 +854,33 @@ hb_codepoint_parse (const char *s, unsigned int len, int base, hb_codepoint_t *o
}
/* Global runtime options. */
struct hb_options_t
{
int initialized : 1;
int uniscribe_bug_compatible : 1;
};
union hb_options_union_t {
int i;
hb_options_t opts;
};
ASSERT_STATIC (sizeof (int) == sizeof (hb_options_union_t));
HB_INTERNAL void
_hb_options_init (void);
extern HB_INTERNAL hb_options_union_t _hb_options;
static inline hb_options_t
hb_options (void)
{
if (unlikely (!_hb_options.i))
_hb_options_init ();
return _hb_options.opts;
}
#endif /* HB_PRIVATE_HH */