public static StringWithIndex TrimStart(this StringWithIndex text, params char[] chars)
{
var trimmed = text.Text.TrimStart(chars);
var lengthDiff = text.Length - trimmed.Length;
return(text.Substring(lengthDiff, text.Length - lengthDiff));
}
public static List <StringWithIndex> SplitWithoutModification(this StringWithIndex text, params string[] separatorStarts)
{
var parts = new List <StringWithIndex>();
var area = text.Text;
var prevIndex = 0;
var nextIndex = -1;
nextIndex = area.IndexOfAny(separatorStarts);
while (nextIndex >= 0)
{
// Add previous part
parts.Add(new StringWithIndex(text.Source, text.Index + prevIndex, nextIndex - prevIndex));
prevIndex = nextIndex;
nextIndex = area.IndexOfAny(separatorStarts, nextIndex + 1);
}
// Add last part
parts.Add(new StringWithIndex(text.Source, text.Index + prevIndex, text.Length - prevIndex));
return(parts);
}
public static List <StringWithIndex> Split(this StringWithIndex text, params string[] separators)
{
var parts = SplitWithoutModification(text, separators);
var trimmed = parts.Select(p => p.TrimStart(separators)).ToList();
return(trimmed);
}
public static List <StringWithIndex> SplitWithoutModificationRegex(this StringWithIndex text, string regexStr)
{
var parts = new List <StringWithIndex>();
var regex = new Regex(regexStr);
var area = text.Text;
var prevIndex = 0;
var m = regex.Match(area);
while (m.Success)
{
var index = m.Index;
parts.Add(text.Substring(prevIndex, index - prevIndex));
prevIndex = index;
m = regex.Match(area, index + 1);
}
// Add last part
parts.Add(text.Substring(prevIndex, area.Length - prevIndex));
return(parts);
}
public LessonSpan(StringWithIndex content, string startMarker, string endMarker)
: base(content)
{
StartMarker = startMarker;
EndMarker = endMarker;
OverrideContent(content.TrimStart(startMarker).TrimEnd(endMarker));
}
public LessonEnd(StringWithIndex content)
: base(content, "", "")
{
if (content.Length != 0)
{
throw new ArgumentException("LessonEnd cannot contain content");
}
}
public static List <StringWithIndex> SplitAfterFirstLine(this StringWithIndex text)
{
var area = text.Text;
var lineBreakIndex = area.IndexOf("\r\n");
return(new List <StringWithIndex>()
{
text.Substring(0, lineBreakIndex),
text.Substring(lineBreakIndex + 2)
});
}
public static StringWithIndex GetValueAfter(this StringWithIndex text, string lineStartMatch)
{
if (!text.Text.StartsWith(lineStartMatch))
{
return(null);
}
else
{
return(text.ReplaceStart(lineStartMatch, ""));
}
}
public static StringWithIndex ReplaceStart(this StringWithIndex text, string match, string replacement)
{
if (text.Text.StartsWith(match))
{
return(text.Substring(match.Length));
}
else
{
return(text);
}
}
public static StringWithIndex ReplaceEnd(this StringWithIndex text, string match, string replacement)
{
if (text.Text.EndsWith(match))
{
return(text.Substring(0, text.Text.Length - match.Length));
}
else
{
return(text);
}
}
public static StringWithIndex TrimStart(this StringWithIndex text, params string[] starts)
{
var trimmed = text.Text;
foreach (var s in starts.OrderByDescending(s => s.Length))
{
if (trimmed.StartsWith(s))
{
trimmed = trimmed.ReplaceStart(s, "");
break;
}
}
var lengthDiff = text.Length - trimmed.Length;
return(text.Substring(lengthDiff, text.Length - lengthDiff));
}
public LessonInstructions(StringWithIndex content) : base(content)
{
}
public static int GetIndexAfter(this StringWithIndex text)
{
return(text.Index + text.Length);
}
public LessonGoal(StringWithIndex content) : base(content)
{
}
public LessonNode(StringWithIndex content)
{
Content = content;
}
public LessonSummary(StringWithIndex content) : base(content)
{
}
public static List <StringWithIndex> GetLines(this StringWithIndex text)
{
return(Split(text, "\n").Where(l => !StringHelper.IsNullOrWhiteSpace(l.Text)).Select(l => l.TrimEnd('\r')).ToList());
}
public LessonTest(StringWithIndex content) : base(content)
{
}
public LessonCodeExplanationQuote(StringWithIndex content) : base(content, "* ", "\r\n")
{
}
public LessonParagraph(StringWithIndex content) : base(content)
{
}
public static List <StringWithIndex> SplitLines(this StringWithIndex text)
{
return(text.Split("\r\n"));
}
internal void OverrideContent(StringWithIndex content)
{
Content = content;
}
public LessonPhrase(StringWithIndex content) : base(content, "- ", "\r\n")
{
}
public LessonCode(StringWithIndex content) : base(content, "", "")
{
}
public static StringWithIndex Trim(this StringWithIndex text, params char[] chars)
{
return(text.TrimStart(chars).TrimEnd(chars));
}
public LessonFile(StringWithIndex content) : base(content)
{
}
public static StringWithIndex TrimEnd(this StringWithIndex text)
{
return(TrimEnd(text, new char[0]));
}
public LessonCodeExplanation(StringWithIndex content) : base(content)
{
}
public LessonComment(StringWithIndex content) : base(content, "// ", "\r\n")
{
}
public LessonStep(StringWithIndex content) : base(content)
{
}