/// <summary>
/// Checks if a number follows the specified <code>token</code>
/// </summary>
/// <param name="category">the category to set if a number follows the <code>token</code></param>
/// <param name="token">the token</param>
/// <returns>true if a number follows the token; false otherwise</returns>
private bool NumberComesAfterPrefix(Element.ElementCategory category, Token token)
{
var numberBegin = ParserHelper.IndexOfFirstDigit(token.Content);
var prefix = StringHelper.SubstringWithCheck(token.Content, 0, numberBegin).ToUpperInvariant();
if (!KeywordManager.Contains(category, prefix))
{
return(false);
}
var number = StringHelper.SubstringWithCheck(token.Content, numberBegin, token.Content.Length - numberBegin);
switch (category)
{
case Element.ElementCategory.ElementEpisodePrefix:
if (!MatchEpisodePatterns(number, token))
{
SetEpisodeNumber(number, token, false);
}
return(true);
case Element.ElementCategory.ElementVolumePrefix:
if (!MatchVolumePatterns(number, token))
{
SetVolumeNumber(number, token, false);
}
return(true);
default:
return(false);
}
}
/// <summary>
/// Removes the extension from the <see cref="filename"/>
/// </summary>
/// <param name="filename">the ref that will be updated with the new filename</param>
/// <param name="extension">the ref that will be updated with the file extension</param>
/// <returns>if the extension was successfully separated from the filename</returns>
private static bool RemoveExtensionFromFilename(ref string filename, ref string extension)
{
int position;
if (string.IsNullOrEmpty(filename) || (position = filename.LastIndexOf('.')) == -1)
{
return(false);
}
/** remove file extension */
extension = filename.Substring(position + 1);
if (extension.Length > 4 || !extension.All(char.IsLetterOrDigit))
{
return(false);
}
/** check if valid anime extension */
var keyword = KeywordManager.Normalize(extension);
if (!KeywordManager.Contains(Element.ElementCategory.ElementFileExtension, keyword))
{
return(false);
}
filename = filename.Substring(0, position);
return(true);
}
