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Remove static initializers from indic

This commit is contained in:
Behdad Esfahbod 2012-06-05 15:17:44 -04:00
parent f06ab8a426
commit a2b471df82
1 changed files with 39 additions and 11 deletions
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50
src/hb-ot-shape-complex-indic.cc
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@ -27,16 +27,44 @@
#include "hb-ot-shape-complex-indic-private.hh"
#include "hb-ot-shape-private.hh"
static const struct indic_options_t
struct indic_options_t
{
indic_options_t (void)
{
char *c = getenv ("HB_OT_INDIC_OPTIONS");
uniscribe_bug_compatible = c && strstr (c, "uniscribe-bug-compatible");
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;
}
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 ();
}
bool uniscribe_bug_compatible;
} options;
return options.opts;
}
static int
compare_codepoint (const void *pa, const void *pb)
@ -390,7 +418,7 @@ initial_reordering_consonant_syllable (const hb_ot_map_t *map, hb_buffer_t *buff
}
/* Attach ZWJ, ZWNJ, nukta, and halant to previous char to move with them. */
if (!options.uniscribe_bug_compatible)
if (!indic_options ().uniscribe_bug_compatible)
{
/* Please update the Uniscribe branch when touching this! */
for (unsigned int i = start + 1; i < end; i++)
@ -487,7 +515,7 @@ initial_reordering_standalone_cluster (const hb_ot_map_t *map,
/* We treat NBSP/dotted-circle as if they are consonants, so we should just chain.
* Only if not in compatibility mode that is... */
if (options.uniscribe_bug_compatible)
if (indic_options ().uniscribe_bug_compatible)
{
/* For dotted-circle, this is what Uniscribe does:
* If dotted-circle is the last glyph, it just does nothing.
@ -732,7 +760,7 @@ final_reordering_syllable (hb_buffer_t *buffer, hb_mask_t *mask_array,
* Uniscribe doesn't do this.
* TEST: U+0930,U+094D,U+0915,U+094B,U+094D
*/
if (!options.uniscribe_bug_compatible &&
if (!indic_options ().uniscribe_bug_compatible &&
unlikely (info[new_reph_pos].indic_category() == OT_H)) {
for (unsigned int i = base + 1; i < new_reph_pos; i++)
if (info[i].indic_category() == OT_M) {
@ -792,7 +820,7 @@ final_reordering_syllable (hb_buffer_t *buffer, hb_mask_t *mask_array,
/* Finish off the clusters and go home! */
if (!options.uniscribe_bug_compatible)
if (!indic_options ().uniscribe_bug_compatible)
{
/* This is what Uniscribe does. Ie. add cluster boundaries after Halant,ZWNJ.
* This means, half forms are submerged into the main consonants cluster.