NullifyNetwork

The blog and home page of Simon Soanes
Skip to content
[ Log On ]

[ Taken from my post at the ms forums here: http://forums.microsoft.com/msdn/ShowPost.aspx?PostID=1014 ]

This is a bit bodged but I just hashed it together to see how easy it would be.  I thought back and could have just iterated over chararray, but it works which is what counts :D

/// <summary>
///
Represents a paragraph in English
///
</summary>
public
abstract class Paragraph
{
///
<summary>
///
Convert a string in arbitrary case to English sentence capitalisation.
///
</summary>
/// <param name="text">The text to convert
</param>
/// <returns>The paragraph of text
</returns>
public
static string ToSentenceCase(string text)
{
string
temporary = text.ToLower();
string
result = "";
while
(temporary.Length>0)
{
string
[] splitTemporary = splitAtFirstSentence(temporary);
temporary = splitTemporary[1];
if
(splitTemporary[0].Length>0)
{
result += capitaliseSentence(splitTemporary[0]);
}
else
{
result += capitaliseSentence(splitTemporary[1]);
temporary =
""
;
}
}
return
result;
}

private static string capitaliseSentence(string sentence)
{
string
result = "";
while
(sentence[0]==' ')
{
sentence = sentence.Remove(0,1);
result+=
" "
;
}
if
(sentence.Length>0)
{
result += sentence.TrimStart().Substring(0, 1).ToUpper();
result += sentence.TrimStart().Substring(1, sentence.TrimStart().Length-1);
}
return
result;
}

private static string[] splitAtFirstSentence(string text)
{
//these are the characters to start a new sentence after
int
lastChar = text.IndexOfAny(new
char[] {'.', ':', '\n', '\r', '!', '?'})+1;
if
(lastChar==1)
{
lastChar = 0;
}
return
new string[] { text.Substring(0, lastChar), text.Substring(lastChar, text.Length-lastChar) };
}
}

Permalink