/// <summary>
/// Replaces hard hyphens at end of line with soft hyphens.
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static string ReplaceHyphensWithSoftHyphens(string input)
{
VietOCR.SpellCheckHelper spellCheck = new VietOCR.SpellCheckHelper(null, "en");
if (!spellCheck.InitializeSpellCheck())
{
return(input);
}
Regex regex = new Regex("(\\b\\p{L}+)(-|\u2010|\u2011|\u2012|\u2013|\u2014|\u2015)\n(\\p{L}+\\b)");
return(regex.Replace(input, new MatchEvaluator(delegate(Match match) { return ReplaceHyphens(match, spellCheck); })));
}
static string ReplaceHyphens(Match m, VietOCR.SpellCheckHelper spellCheck)
{
string before = m.Groups[0].Value;
string after = m.Groups[3].Value;
char last = before[before.Length - 1];
char first = after[0];
if (Char.IsUpper(first) && Char.IsUpper(last) || Char.IsLower(first) && Char.IsLower(last))
{
string word = before + after;
if (!spellCheck.IsMispelled(word))
{
return(before + SOFT_HYPHEN + "\n" + after);
}
}
// Return the matched string.
return(m.Value);
}