static int init_libthai() {
if (!th_brk || !th_next_cell || !th_render_cell_tis || !th_render_cell_win || !th_render_cell_mac) {
th_brk = (th_brk_def) HB_Library_Resolve("thai", (int)LIBTHAI_MAJOR, "th_brk");
th_next_cell = (th_next_cell_def)HB_Library_Resolve("thai", LIBTHAI_MAJOR, "th_next_cell");
th_render_cell_tis = (th_render_cell_tis_def) HB_Library_Resolve("thai", (int)LIBTHAI_MAJOR, "th_render_cell_tis");
th_render_cell_win = (th_render_cell_win_def) HB_Library_Resolve("thai", (int)LIBTHAI_MAJOR, "th_render_cell_win");
th_render_cell_mac = (th_render_cell_mac_def) HB_Library_Resolve("thai", (int)LIBTHAI_MAJOR, "th_render_cell_mac");
}
if (th_brk && th_next_cell && th_render_cell_tis && th_render_cell_win && th_render_cell_mac)
return 1;
else
return 0;
}
static void thaiWordBreaks(const HB_UChar16 *string, hb_uint32 len, HB_CharAttributes *attributes)
{
typedef int (*th_brk_def)(const char*, int[], int);
static void *thaiCodec = 0;
static th_brk_def th_brk = 0;
char *cstr = 0;
int brp[128];
int *break_positions = brp;
hb_uint32 numbreaks;
hb_uint32 i;
if (!thaiCodec)
thaiCodec = HB_TextCodecForMib(2259);
/* load libthai dynamically */
if (!th_brk && thaiCodec) {
th_brk = (th_brk_def)HB_Library_Resolve("thai", "th_brk");
if (!th_brk)
thaiCodec = 0;
}
if (!th_brk)
return;
cstr = HB_TextCodec_ConvertFromUnicode(thaiCodec, string, len, 0);
if (!cstr)
return;
break_positions = brp;
numbreaks = th_brk(cstr, break_positions, 128);
if (numbreaks > 128) {
break_positions = (int *)malloc(numbreaks * sizeof(int));
numbreaks = th_brk(cstr, break_positions, numbreaks);
}
for (i = 0; i < len; ++i)
attributes[i].lineBreakType = HB_NoBreak;
for (i = 0; i < numbreaks; ++i) {
if (break_positions[i] > 0)
attributes[break_positions[i]-1].lineBreakType = HB_Break;
}
if (break_positions != brp)
free(break_positions);
HB_TextCodec_FreeResult(cstr);
}
static void resolve_libthai()
{
if (!th_brk)
th_brk = (th_brk_def)HB_Library_Resolve("thai", 0, "th_brk");
libthai_resolved = 1;
}
