protected MergeTextTemplateEngine(Guid?verticalId, string mimeType, string text, MergeSettings settings)
{
_verticalId = verticalId;
_mimeType = mimeType;
_text = text;
_settings = settings;
}
private static Assembly CreateAssembly(string code, string mimeType, MergeSettings settings)
{
// Create an in-memory assembly from the source code.
CompilerParameters parameters = new CompilerParameters();
parameters.GenerateExecutable = false;
parameters.GenerateInMemory = true;
parameters.IncludeDebugInformation = false;
AddReferences(parameters, mimeType, settings);
// Compile the code.
CodeDomProvider provider = new CSharpCodeProvider();
CompilerResults results = provider.CompileAssemblyFromSource(parameters, code);
// Look for errors.
if (results.Errors.Count > 0)
{
throw new ApplicationException("Compile Error: " + results.Errors[0].ErrorText);
}
// Return the compiled assembly.
return(results.CompiledAssembly);
}
public static string Parse(string text, string mimeType, string method, TemplateProperties properties, MergeSettings settings)
{
using (var stream = new MemoryStream())
{
using (var writer = new StreamWriter(stream, System.Text.Encoding.UTF8))
{
WriteUsings(writer, mimeType, settings.Usings);
// Class declaration.
writer.Write(@"
using System;
namespace LinkMe.Utility.Templates.Generated
{
public class Engine
{
");
// Fields.
WriteFields(writer, settings.Fields);
// Methods.
WriteMethods(writer, settings.Methods);
// The actual merge method.
writer.Write(@"
public static string ");
writer.Write(method);
writer.Write("(");
WriteParameters(writer, properties);
writer.Write(@")
{
using (MemoryStream stream = new MemoryStream())
{
using (StreamWriter writer = new StreamWriter(stream, System.Text.Encoding.UTF8))
{
");
writer.Write(@" // Start of template.
");
WriteText(writer, text, mimeType);
writer.Write(@" // End of template.
");
writer.Write(@"
writer.Flush();
stream.Position = 0;
using (StreamReader reader = new StreamReader(stream))
{
return reader.ReadToEnd();
}
}
}
}
}
}");
writer.Flush();
stream.Position = 0;
using (var reader = new StreamReader(stream))
{
return(reader.ReadToEnd());
}
}
}
}
private static void AddReferences(CompilerParameters parameters, string mimeType, MergeSettings settings)
{
// Add standard references.
parameters.ReferencedAssemblies.Add("mscorlib.dll");
parameters.ReferencedAssemblies.Add("System.dll");
parameters.ReferencedAssemblies.Add("System.Xml.dll");
if (mimeType == MediaTypeNames.Text.Html)
{
if (!settings.References.Contains("System.Web.dll"))
{
parameters.ReferencedAssemblies.Add("System.Web.dll");
}
}
// Add any aditional references that are needed.
foreach (string reference in settings.References)
{
parameters.ReferencedAssemblies.Add(reference);
}
}
public static MethodInfo Compile(string code, string mimeType, string method, MergeSettings settings)
{
if (code == null)
{
throw new ArgumentNullException("code");
}
if (method == null)
{
throw new ArgumentNullException("method");
}
// Create the assembly and then find the method.
Assembly assembly = CreateAssembly(code, mimeType, settings);
return(GetMethodInfo(assembly, method));
}
