private bool isValidReference()
{
log.Debug($"Checking reference validity (book: {txtBook.Text}, reference: {txtReference.Text})");
var bookNames = bible.books.Select(book => book.name.ToLower()).ToList();
var validBook = bookNames.Contains(txtBook.Text.ToLower());
var validReference = Regex.Match(txtReference.Text, "^[0-9]+(:[0-9]+(-[0-9]+)?)?$").Success;
if (validBook && validReference)
{
try
{
log.Debug("Book and reference appear structurally valid; parsing...");
ScriptureReference.parse(bible, txtBook.Text, txtReference.Text);
return(true);
} catch (Exception e)
{
// This will happen if parsing fails due to a bad reference
return(false);
}
}
else
{
return(false);
}
}
public static ScriptureReference parse(Bible bible, String bookName, String reference)
{
var scriptureReference = new ScriptureReference();
var book = bible.books.Find(bookItem => bookItem.name.ToLower() == bookName.ToLower());
if (book == null)
{
throw new Exception("Book does not exist");
}
var referenceParts = reference.Split(new char[] { ':', '-' });
scriptureReference.bookName = book.name;
scriptureReference.chapterNum = Int32.Parse(referenceParts[0]);
var chapter = book.chapters.Find(chapterItem => chapterItem.number == scriptureReference.chapterNum);
if (chapter == null)
{
throw new Exception("Chapter does not exist");
}
if (referenceParts.Length > 2)
{
scriptureReference.verseNumStart = Int32.Parse(referenceParts[1]);
scriptureReference.verseNumEnd = Int32.Parse(referenceParts[2]);
}
else if (referenceParts.Length > 1)
{
scriptureReference.verseNumStart = Int32.Parse(referenceParts[1]);
scriptureReference.verseNumEnd = scriptureReference.verseNumStart;
}
else
{
// No verses were specified, so use the whole range
scriptureReference.verseNumStart = 1;
scriptureReference.verseNumEnd = chapter.verses.Last().number;
}
if (scriptureReference.verseNumEnd < scriptureReference.verseNumStart)
{
throw new Exception("Verse range end is before start");
}
if (scriptureReference.verseNumStart < chapter.verses.First().number)
{
throw new Exception("Verse range is before beginning of chapter");
}
if (scriptureReference.verseNumEnd > chapter.verses.Last().number)
{
throw new Exception("Verse range goes past end of chapter");
}
return(scriptureReference);
}