public string[] ExportOptions( )
{
WebView2RegexOptions options = OptionsControl.GetSelectedOptions( );
var json = JsonSerializer.Serialize(options);
return(new[] { $"json:{json}" });
}
Regex CreateColouringRegex(WebView2RegexOptions options)
{
var pb_escape = new PatternBuilder( );
pb_escape.BeginGroup("escape");
pb_escape.Add(@"\\c[A-Za-z]"); // \cx control char
pb_escape.Add(@"\\x[0-9a-fA-F]{1,2}"); // hexadecimal char
pb_escape.Add(@"\\u[0-9a-fA-F]{1,4}"); // hexadecimal char
if (options.u)
{
// language=regex
pb_escape.Add(@"\\u\{[0-9a-fA-F]+(\}|$)"); // hexadecimal char
// language=regex
pb_escape.Add(@"\\(p|P)\{.*?(\}|$)"); // unicode property
}
pb_escape.Add(@"\\."); // \.
pb_escape.EndGroup( );
var pb = new PatternBuilder( );
pb.AddGroup(null, $@"\[\]?({pb_escape.ToPattern( )} |.)*?(\]|$)");
// language=regex
pb.Add(@"\(\?(?'name'<(?![=!]).*?(>|$))");
// language=regex
pb.Add(@"(?'name'\\k<.*?(>|$))");
pb.Add(pb_escape.ToPattern( ));
return(pb.ToRegex( ));
}
Regex CreateHighlightingRegex(WebView2RegexOptions options)
{
var pb = new PatternBuilder( );
pb.Add(@"(?'left_par'\()"); // '('
pb.Add(@"(?'right_par'\))"); // ')'
pb.Add(@"\\[pPu]\{.*?(\}|$)"); // (skip)
pb.Add(@"(?'left_brace'\{).*?((?'right_brace'\})|$)"); // '{...}'
pb.Add(@"(?'left_bracket'\[) \]? (\\.|.)*? ((?'right_bracket'\])|$)"); // '[...]'
pb.Add(@"\\."); // (skip)
return(pb.ToRegex( ));
}
internal void SetSelectedOptions(WebView2RegexOptions options)
{
try
{
++ChangeCounter;
Options = options.Clone( );
DataContext = Options;
}
finally
{
--ChangeCounter;
}
}
public void ImportOptions(string[] options)
{
var json = options.FirstOrDefault(o => o.StartsWith("json:"))?.Substring("json:".Length);
WebView2RegexOptions options_obj;
if (string.IsNullOrWhiteSpace(json))
{
options_obj = new WebView2RegexOptions( );
}
else
{
options_obj = JsonSerializer.Deserialize <WebView2RegexOptions>(json);
}
OptionsControl.SetSelectedOptions(options_obj);
}
Regex GetCachedHighlightingRegex( )
{
WebView2RegexOptions options = OptionsControl.GetSelectedOptions( );
object key = options.u;
lock ( CachedHighlightingRegexes )
{
if (CachedHighlightingRegexes.TryGetValue(key, out Regex regex))
{
return(regex);
}
regex = CreateHighlightingRegex(options);
CachedHighlightingRegexes.Add(key, regex);
return(regex);
}
}
public IMatcher ParsePattern(string pattern)
{
WebView2RegexOptions options = OptionsControl.GetSelectedOptions( );
return(new WebView2Matcher(pattern, options));
}
public WebView2Matcher(string pattern, WebView2RegexOptions options)
{
Pattern = pattern;
Options = options;
}
