62 lines
1.9 KiB
C#
62 lines
1.9 KiB
C#
using System;
|
|
using System.IO;
|
|
using System.Text;
|
|
|
|
namespace Mustache
|
|
{
|
|
/// <summary>
|
|
/// Substitutes a key placeholder with the textual representation of the associated object.
|
|
/// </summary>
|
|
internal sealed class KeyGenerator : IGenerator
|
|
{
|
|
private readonly string _key;
|
|
private readonly string _format;
|
|
private readonly bool _isVariable;
|
|
|
|
/// <summary>
|
|
/// Initializes a new instance of a KeyGenerator.
|
|
/// </summary>
|
|
/// <param name="key">The key to substitute with its value.</param>
|
|
/// <param name="alignment">The alignment specifier.</param>
|
|
/// <param name="formatting">The format specifier.</param>
|
|
public KeyGenerator(string key, string alignment, string formatting)
|
|
{
|
|
if (key.StartsWith("@"))
|
|
{
|
|
_key = key.Substring(1);
|
|
_isVariable = true;
|
|
}
|
|
else
|
|
{
|
|
_key = key;
|
|
_isVariable = false;
|
|
}
|
|
_format = getFormat(alignment, formatting);
|
|
}
|
|
|
|
private static string getFormat(string alignment, string formatting)
|
|
{
|
|
StringBuilder formatBuilder = new StringBuilder();
|
|
formatBuilder.Append("{0");
|
|
if (!String.IsNullOrWhiteSpace(alignment))
|
|
{
|
|
formatBuilder.Append(",");
|
|
formatBuilder.Append(alignment.TrimStart('+'));
|
|
}
|
|
if (!String.IsNullOrWhiteSpace(formatting))
|
|
{
|
|
formatBuilder.Append(":");
|
|
formatBuilder.Append(formatting);
|
|
}
|
|
formatBuilder.Append("}");
|
|
return formatBuilder.ToString();
|
|
}
|
|
|
|
void IGenerator.GetText(Scope scope, TextWriter writer, Scope context)
|
|
{
|
|
object value = _isVariable ? context.Find(_key) : scope.Find(_key);
|
|
writer.Write(_format, value);
|
|
}
|
|
}
|
|
}
|