/// <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(SourceLineNumberCollection sourceLineNumbers, string prefix, string name)
{
if (null == prefix)
{
throw new ArgumentNullException("prefix");
}
if (null == name)
{
throw new ArgumentNullException("name");
}
if (0 == name.Length)
{
throw new ArgumentException("Empty variable name.", "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(this.sourceFile), Path.DirectorySeparatorChar));
case "SOURCEFILEPATH":
return(this.sourceFile);
default:
return(null);
}
case "var":
return((string)this.variables[name]);
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);
}
}
}
/// <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(SourceLineNumberCollection 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[0].FileName), Path.DirectorySeparatorChar));
case "SOURCEFILEPATH":
return(sourceLineNumbers[0].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");
default:
throw new ArgumentException(WixStrings.EXP_UnknownPlatformEnum, this.currentPlatform.ToString());
}
default:
return(null);
}
case "var":
return((string)this.variables[name]);
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);
}
}
}