/// <summary>
/// Get indented version of command line or same string if we unable to produce it.
/// </summary>
/// <param name="commandLine">command line</param>
/// <returns>indented version of command line(if possible)</returns>
public static string GetIndentedCommandLine(string commandLine)
{
using (var sw = new System.IO.StringWriter())
{
var itw = IndentingTextWriter.Wrap(sw);
if (TryProduceIndentString(commandLine, itw))
{
return(sw.ToString().Trim());
}
return(commandLine);
}
}
public static IndentingTextWriter Wrap(TextWriter wrt, string indentString = " ")
{
Contracts.AssertValue(wrt);
Contracts.AssertNonEmpty(indentString);
IndentingTextWriter itw = wrt as IndentingTextWriter;
if (itw != null)
{
return(itw);
}
return(new IndentingTextWriter(wrt, indentString));
}
/// <summary>
/// Try produce indented string for command line.
/// </summary>
/// <param name="text">command line</param>
/// <param name="itw">indenting text writer</param>
/// <returns>true if we was able to produce indented string without any problem</returns>
private static bool TryProduceIndentString(string text, IndentingTextWriter itw)
{
string[] tokens;
if (!CmdParser.LexString(text, out tokens))
{
return(false);
}
for (var i = 0; i < tokens.Length;)
{
//We in last token, or next token don't equal to '='.
if (i + 1 == tokens.Length || tokens[i + 1] != "=")
{
itw.WriteLine(tokens[i++]);
}
else
{
itw.Write(tokens[i++]);
itw.Write(tokens[i++]);
// We have something like "name =" which is invalid.
if (i >= tokens.Length)
{
return(false);
}
//We have something like "name = value {options}".
if (i + 1 < tokens.Length && tokens[i + 1].StartsWith("{") && tokens[i + 1].EndsWith("}"))
{
itw.Write(tokens[i++]);
itw.WriteLine("{");
using (itw.Nest())
{
var str = CmdLexer.UnquoteValue(tokens[i++]);
// REVIEW: Probably we shouldn't give up if we have problem within one of the token
//and we need return partially indented string.
bool success = TryProduceIndentString(str, itw);
if (!success)
{
return(false);
}
}
itw.WriteLine("}");
}
//We have something like "name = value".
else
{
itw.WriteLine(tokens[i++]);
}
}
}
return(true);
}
public void Dispose()
{
_wrt.Outdent();
_wrt = null;
}
public Scope(IndentingTextWriter wrt)
{
_wrt = wrt;
_wrt.Indent();
}