/// <returns>The <see cref="SubtitleSearchResults" />, or null if the text was not found.</returns>
private SubtitleSearchResults FindInSubtitle(int subtitleNumber, string lineBreak, Regex regex, bool backwards)
{
if (backwards)
{
/* Find first in the translation */
SubtitleSearchResults results = FindInTextContent(subtitleNumber, lineBreak, regex, SubtitleTextType.Translation);
if (results != null)
{
return(results);
}
/* Not found in the translation, finding in the text */
return(FindInTextContent(subtitleNumber, lineBreak, regex, SubtitleTextType.Text));
}
else
{
/* Find first in the text */
SubtitleSearchResults results = FindInTextContent(subtitleNumber, lineBreak, regex, SubtitleTextType.Text);
if (results != null)
{
return(results);
}
/* Not found in the text, finding in the translation */
return(FindInTextContent(subtitleNumber, lineBreak, regex, SubtitleTextType.Translation));
}
}
/// <summary>Searches backward for text using the specified search options.</summary>
/// <param name="options">The search options.</param>
/// <returns>The search results, or null in case no results were found.</returns>
private SubtitleSearchResults FindBackward(SubtitleSearchOptions options)
{
SubtitleCollection collection = subtitles.Collection;
if (collection.Count == 0)
{
return(null);
}
/* Search the subtitle starting at the startIndex */
SubtitleSearchResults results = FindInSubtitleFromIndex(options.StartSubtitle, options.LineBreak, options.Regex, options.StartIndex, options.TextType, options.Backwards);
if (results != null)
{
return(results);
}
/* Iterate through the start of the collection */
for (int subtitleNumber = options.StartSubtitle - 1; subtitleNumber > 0; subtitleNumber--)
{
results = FindInSubtitle(subtitleNumber, options.LineBreak, options.Regex, options.Backwards);
if (results != null)
{
return(results);
}
}
if (options.Wrap)
{
/* Iterate from the end back to the subtitle */
for (int subtitleNumber = collection.Count - 1; subtitleNumber > options.StartSubtitle; subtitleNumber--)
{
results = FindInSubtitle(subtitleNumber, options.LineBreak, options.Regex, options.Backwards);
if (results != null)
{
return(results);
}
}
/* Search the subtitle ending at the startIndex */
results = FindInSubtitleTillIndex(options.StartSubtitle, options.LineBreak, options.Regex, options.StartIndex, options.TextType, options.Backwards);
if (results != null)
{
return(results);
}
}
/* Text not found */
return(null);
}
/// <returns>The <see cref="SubtitleSearchResults" />, or null if the text was not found.</returns>
private SubtitleSearchResults FindInSubtitleTillIndex(int subtitleNumber, string lineBreak, Regex regex, int endIndex, SubtitleTextType textType, bool backwards)
{
if (backwards)
{
if (textType == SubtitleTextType.Text)
{
/* Find first in the translation */
SubtitleSearchResults results = FindInTextContent(subtitleNumber, lineBreak, regex, SubtitleTextType.Translation);
if (results != null)
{
return(results);
}
/* Not found in the text, finding in the text till the specified index */
return(FindInTextContentTillIndex(subtitleNumber, lineBreak, regex, endIndex, SubtitleTextType.Text, backwards));
}
else
{
/* Find in the translation till specified index */
return(FindInTextContentTillIndex(subtitleNumber, lineBreak, regex, endIndex, SubtitleTextType.Translation, backwards));
}
}
else
{
if (textType == SubtitleTextType.Text)
{
/* Find in the text ending at the specified index */
return(FindInTextContentTillIndex(subtitleNumber, lineBreak, regex, endIndex, SubtitleTextType.Text, backwards));
}
else
{
/* Find first in the text */
SubtitleSearchResults results = FindInTextContent(subtitleNumber, lineBreak, regex, SubtitleTextType.Text);
if (results != null)
{
return(results);
}
/* Not found in the text, finding in the translation till the specified index */
return(FindInTextContentTillIndex(subtitleNumber, lineBreak, regex, endIndex, SubtitleTextType.Translation, backwards));
}
}
}