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