protected int FindEndOfItem(StringRange content, int position)
{
/*********************************************
* item will end when the next line is not
* indented by at least one space
* ******************************************/
for (int possibleEnd = position; possibleEnd < content.End; possibleEnd++)
{
possibleEnd = content.EndOfLine(possibleEnd, true);
var lineStart = content.StartOfNextLine(possibleEnd);
if (lineStart == -1)
{
return content.EndOfLine(possibleEnd);
}
// if line does not start with space then last line was the end of item
if (!content.HasCharactersAt(lineStart, ' '))
{
return content.EndOfLine(possibleEnd);
}
}
return position;
}
public Block Build(int start, StringRange content, out int end)
{
int endOfHeadingText = content.EndOfLine(start, false);
int startOfMarker = content.StartOfNextLine(endOfHeadingText);
end = content.EndOfLine(startOfMarker, false);
return new Heading(content, start, endOfHeadingText, 2);
}
public Block Build(int start, StringRange content, out int end)
{
// \n\n
end = content.EndOfLine(start, true);
if (content.HasCharactersAt(end + 1, '\n'))
end = content.EndOfLine(end + 1, true);
return new EmptyLine(content, start, end);
}
public override Block Build(int start, StringRange content, out int end)
{
int startOfLine = start;
var items = new List<Item>();
Item lastItem = null;
bool foundItem = false;
do
{
int startOfItem = content.IndexOf(' ', startOfLine) + 1;
int endOfItem = FindEndOfItem(content, startOfItem);
IEnumerable<Span> spans = _inlineParser.Parse(new StringRange(content, startOfItem, endOfItem));
lastItem = new Item(
content,
startOfItem,
endOfItem,
spans);
items.Add(lastItem);
startOfLine = content.StartOfNextLine(endOfItem);
if (startOfLine == -1)
break;
foundItem = _expression.IsMatch(content.Document, startOfLine);
} while (foundItem);
// special case when content ends
end = content.EndOfLine(lastItem.End);
return new List(content, start, end, true, items);
}
public Block Build(int start, StringRange content, out int end)
{
int startOfLine = start;
var items = new List<LinkDefinition>();
do
{
var key = new StringRange(
content,
content.IndexOf('[', startOfLine) + 1,
content.IndexOf(']', startOfLine) - 1);
var urlStart = content.IndexOf(':', key.End) + 1;
if (content[urlStart] == ' ')
urlStart++;
var url = new StringRange(
content,
urlStart,
content.EndOfLine(startOfLine));
var item = new LinkDefinition(
content,
startOfLine,
content.EndOfLine(startOfLine),
key,
url);
items.Add(item);
startOfLine = content.StartOfNextLine(startOfLine);
if (startOfLine == -1)
break;
} while (_expression.IsMatch(content.Document, content.IndexOf('[', startOfLine)));
// special case when content ends
end = startOfLine != -1 ? content.EndOfLine(startOfLine, false) : content.End;
return new LinkDefinitionList(content, start, end, items);
}
public Block Build(int start, StringRange content, out int end)
{
// sample link to gist: https://gist.github.com/pekkah/8304465
int userNameStart = content.IndexOf(".com/") + 5;
int gistIdStart = content.IndexOf('/', userNameStart) + 1;
end = content.EndOfLine(gistIdStart, false);
return new GistBlock(
content,
start,
content.EndOfLine(start),
new StringRange(
content,
userNameStart,
gistIdStart - 2),
new StringRange(
content,
gistIdStart,
content.EndOfLine(gistIdStart)));
}
public Block Build(int start, StringRange content, out int end)
{
end = content.EndOfLine(start, false);
var counter = start;
var level = 0;
while (content[counter] == '#')
{
level++;
counter++;
}
return new Heading(content, counter + 1, end, level);
}
public Block Build(int start, StringRange content, out int end)
{
// try reading syntax
StringRange syntax = null;
var endOfStartTag = content.IndexOf("```", start) + 3;
var endOfStartTagLine = content.EndOfLine(endOfStartTag);
if (endOfStartTagLine > endOfStartTag)
{
syntax = new StringRange(content.Document, endOfStartTag, endOfStartTagLine);
}
// start from the actual first line of the content
var contentStart = content.StartOfNextLine(start);
// find the end ``` by skipping the first ```
var contentEnd = content.IndexOf("```", contentStart) - 1;
// skip line ending
end = content.EndOfLine(contentEnd + 1);
// use the content between ``` and ```
return new Codeblock(content, contentStart, contentEnd, syntax);
}
public override Span Build(int position, StringRange content, out int lastPosition)
{
lastPosition = content.EndOfLine(position, true);
return new NewLineSpan(content, position, lastPosition);
}