/// <summary>
/// Evaluate a function.
/// </summary>
/// <param name="sourceLineNumbers">The source line information for the function.</param>
/// <param name="prefix">The function prefix.</param>
/// <param name="function">The function name.</param>
/// <param name="args">The arguments for the function.</param>
/// <returns>The function value or null if the function is not defined.</returns>
public string EvaluateFunction(SourceLineNumber sourceLineNumbers, string prefix, string function, string[] args)
{
if (String.IsNullOrEmpty(prefix))
{
throw new ArgumentNullException("prefix");
}
if (String.IsNullOrEmpty(function))
{
throw new ArgumentNullException("function");
}
switch (prefix)
{
case "fun":
switch (function)
{
case "AutoVersion":
// Make sure the base version is specified
if (args.Length == 0 || String.IsNullOrEmpty(args[0]))
{
throw new WixException(WixErrors.InvalidPreprocessorFunctionAutoVersion(sourceLineNumbers));
}
// Build = days since 1/1/2000; Revision = seconds since midnight / 2
DateTime now = DateTime.UtcNow;
TimeSpan build = now - new DateTime(2000, 1, 1);
TimeSpan revision = now - new DateTime(now.Year, now.Month, now.Day);
return(String.Join(".", args[0], (int)build.TotalDays, (int)(revision.TotalSeconds / 2)));
default:
return(null);
}
default:
PreprocessorExtension extension = (PreprocessorExtension)this.extensionsByPrefix[prefix];
if (null != extension)
{
try
{
return(extension.EvaluateFunction(prefix, function, args));
}
catch (Exception e)
{
throw new WixException(WixErrors.PreprocessorExtensionEvaluateFunctionFailed(sourceLineNumbers, prefix, function, String.Join(",", args), e.Message));
}
}
else
{
return(null);
}
}
}
/// <summary>
/// Evaluate a function.
/// </summary>
/// <param name="sourceLineNumbers">The source line information for the function.</param>
/// <param name="prefix">The function prefix.</param>
/// <param name="function">The function name.</param>
/// <param name="args">The arguments for the function.</param>
/// <returns>The function value or null if the function is not defined.</returns>
public string EvaluateFunction(SourceLineNumber sourceLineNumbers, string prefix, string function, string[] args)
{
if (String.IsNullOrEmpty(prefix))
{
throw new ArgumentNullException("prefix");
}
if (String.IsNullOrEmpty(function))
{
throw new ArgumentNullException("function");
}
switch (prefix)
{
case "fun":
switch (function)
{
// Add any core defined functions here
default:
return(null);
}
default:
PreprocessorExtension extension = (PreprocessorExtension)this.extensionsByPrefix[prefix];
if (null != extension)
{
try
{
return(extension.EvaluateFunction(prefix, function, args));
}
catch (Exception e)
{
throw new WixException(WixErrors.PreprocessorExtensionEvaluateFunctionFailed(sourceLineNumbers, prefix, function, String.Join(",", args), e.Message));
}
}
else
{
return(null);
}
}
}
/// <summary>
/// Evaluate a Pragma.
/// </summary>
/// <param name="sourceLineNumbers">The source line information for the function.</param>
/// <param name="pragmaName">The pragma's full name (<prefix>.<pragma>).</param>
/// <param name="args">The arguments to the pragma.</param>
/// <param name="parent">The parent element of the pragma.</param>
public void PreprocessPragma(SourceLineNumber sourceLineNumbers, string pragmaName, string args, XContainer parent)
{
string[] prefixParts = pragmaName.Split(variableSplitter, 2);
// Check to make sure there are 2 parts and neither is an empty string.
if (2 != prefixParts.Length)
{
throw new WixException(WixErrors.InvalidPreprocessorPragma(sourceLineNumbers, pragmaName));
}
string prefix = prefixParts[0];
string pragma = prefixParts[1];
if (String.IsNullOrEmpty(prefix) || String.IsNullOrEmpty(pragma))
{
throw new WixException(WixErrors.InvalidPreprocessorPragma(sourceLineNumbers, pragmaName));
}
switch (prefix)
{
case "wix":
switch (pragma)
{
// Add any core defined pragmas here
default:
this.OnMessage(WixWarnings.PreprocessorUnknownPragma(sourceLineNumbers, pragmaName));
break;
}
break;
default:
PreprocessorExtension extension = (PreprocessorExtension)this.extensionsByPrefix[prefix];
if (null == extension || !extension.ProcessPragma(sourceLineNumbers, prefix, pragma, args, parent))
{
this.OnMessage(WixWarnings.PreprocessorUnknownPragma(sourceLineNumbers, pragmaName));
}
break;
}
}
/// <summary>
/// Get the value of a variable.
/// </summary>
/// <param name="sourceLineNumbers">The source line information for the function.</param>
/// <param name="prefix">The variable prefix.</param>
/// <param name="name">The variable name.</param>
/// <returns>The variable value or null if the variable is not set.</returns>
public string GetVariableValue(SourceLineNumber sourceLineNumbers, string prefix, string name)
{
if (String.IsNullOrEmpty(prefix))
{
throw new ArgumentNullException("prefix");
}
if (String.IsNullOrEmpty(name))
{
throw new ArgumentNullException("name");
}
switch (prefix)
{
case "env":
return(Environment.GetEnvironmentVariable(name));
case "sys":
switch (name)
{
case "CURRENTDIR":
return(String.Concat(Directory.GetCurrentDirectory(), Path.DirectorySeparatorChar));
case "SOURCEFILEDIR":
return(String.Concat(Path.GetDirectoryName(sourceLineNumbers.FileName), Path.DirectorySeparatorChar));
case "SOURCEFILEPATH":
return(sourceLineNumbers.FileName);
case "PLATFORM":
this.OnMessage(WixWarnings.DeprecatedPreProcVariable(sourceLineNumbers, "$(sys.PLATFORM)", "$(sys.BUILDARCH)"));
goto case "BUILDARCH";
case "BUILDARCH":
switch (this.currentPlatform)
{
case Platform.X86:
return("x86");
case Platform.X64:
return("x64");
case Platform.IA64:
return("ia64");
case Platform.ARM:
return("arm");
default:
throw new ArgumentException(WixStrings.EXP_UnknownPlatformEnum, this.currentPlatform.ToString());
}
default:
return(null);
}
case "var":
string result = null;
return(this.variables.TryGetValue(name, out result) ? result : null);
default:
PreprocessorExtension extension = (PreprocessorExtension)this.extensionsByPrefix[prefix];
if (null != extension)
{
try
{
return(extension.GetVariableValue(prefix, name));
}
catch (Exception e)
{
throw new WixException(WixErrors.PreprocessorExtensionGetVariableValueFailed(sourceLineNumbers, prefix, name, e.Message));
}
}
else
{
return(null);
}
}
}