public IEnumerable <BreakSpan> BreakToLineSegments(char[] str, int startAt, int len)
{
//user must setup the CustomBreakerBuilder before use
if (_textBreaker == null)
{
_textBreaker = Typography.TextBreak.CustomBreakerBuilder.NewCustomBreaker();
}
int cur_startAt = startAt;
_textBreaker.BreakWords(str, cur_startAt, len);
foreach (TextBreak.BreakSpan sp in _textBreaker.GetBreakSpanIter())
{
//our service select a proper script lang info and add to the breakspan
//at this point
//we assume that 1 break span
//has 1 script lang, and we examine it
//with sample char
char sample = str[sp.startAt];
ScriptLang selectedScriptLang;
if (sample == ' ')
{
//whitespace
selectedScriptLang = _defaultScriptLang;
}
else if (char.IsWhiteSpace(sample))
{
//other whitespace
selectedScriptLang = _defaultScriptLang;
}
else
{
//
Typography.OpenFont.ScriptLang scLang;
if (Typography.OpenFont.ScriptLangs.TryGetScriptLang(sample, out scLang))
{
//we should decide to use
//current typeface
//or ask for alternate typeface
//if the current type face is not support the request scriptLang
//
selectedScriptLang = scLang;
}
else
{
//not found
//use default
selectedScriptLang = _defaultScriptLang;
}
}
BreakSpan breakspan = new BreakSpan();
breakspan.startAt = sp.startAt;
breakspan.len = sp.len;
breakspan.scLang = selectedScriptLang;
yield return(breakspan);
}
}
public static void Benchmark()
{
Console.OutputEncoding = Encoding.Unicode;
const int length = 1000000;
var s = new System.Diagnostics.Stopwatch();
var b = new Typography.TextBreak.CustomBreaker(_ => { });
b.BreakWords("Initialize"); //Don't measure startup costs
foreach (var c in new[] {
'0', '3', ' ', 'a', 'r', '#', '.', '%', '\r', '\u3232', '\uFEFF', '0'
})
{
s.Restart();
b.BreakWords(new string(c, length));
s.Stop();
Console.WriteLine("'{0}': {1}", c, s.Elapsed);
GC.Collect();
}
}
