/// <summary>
/// Returns x sandwiched between open and shut code tags.
///
/// If encode is true, first HTML encode x.
///
/// Returns an empty string if x is trivial.
/// </summary>
/// <param name="x">The text to sandwich</param>
/// <param name="encode">If true HTML encode x</param>
public static string code(string x, bool encode)
{
if (StringTools.IsTrivial(x))
{
return("");
}
x = encode ? StringTools.HtmlEncode(x) : x;
return(open_code + x + shut_code);
}
/*
* Provide error content to the HttpContext Response object.
*
* The embeddedUrl is the url that was being processed.
*
* The message is any additional information to provide.
*/
void ProcessRequestError
(HttpContext context, string embeddedUrl, string message)
{
context.Response.Write("<!DOCTYPE html>\n");
context.Response.Write("<html>\n");
context.Response.Write("<head><title>SimpleProxy</title></head>\n");
context.Response.Write("<body><h1>SimpleProxy Error</h1>\n");
if (StringTools.IsTrivial(embeddedUrl))
{
context.Response.Write("<h2>Needs an embedded Url in the query string</h2>\n");
context.Response.Write("<pre style='color: blue; font-size: 150%; margin-left: 5%'><b>");
context.Response.Write("?url=\"...\"");
context.Response.Write("</b></pre>\n");
context.Response.Write("<h2>where ... is the url embedded between the delimiters.</h2>");
context.Response.Write("<h2>The delimiters may be single quote, double quote, or vertical bar.</h2>");
context.Response.Write("<h2>Documentation is <a href=");
context.Response.Write("'http://net4.ccs.neu.edu/home/rasala/simpleproxy/'");
context.Response.Write(" target='_blank' style='text-decoration: none'>here</a>.</h2>\n");
}
else
{
context.Response.Write("<h2>Embedded Url:</h2>\n");
embeddedUrl = StringTools.HtmlEncode(embeddedUrl);
context.Response.Write("<pre style='color: blue; font-size: 150%; margin-left: 5%'><b>");
context.Response.Write(embeddedUrl);
context.Response.Write("</b></pre>\n");
}
if (!StringTools.IsTrivial(message))
{
context.Response.Write("<div>");
context.Response.Write(message);
context.Response.Write("</div>\n");
}
context.Response.Write("</body>\n");
context.Response.Write("</html>\n");
}
/// <summary>
/// Adds x sandwiched between open and shut code tags
/// to the given StringBuilder builder.
///
/// If encode is true, first HTML encode x.
///
/// Does nothing if x is trivial.
/// </summary>
/// <param name="builder">The builder to collect the markup</param>
/// <param name="x">The text to sandwich</param>
/// <param name="encode">If true HTML encode x</param>
public static void code
(StringBuilder builder, string x, bool encode)
{
if (StringTools.IsTrivial(x))
{
return;
}
builder.Append(open_code);
if (encode)
{
x = StringTools.HtmlEncode(x);
}
builder.Append(x);
builder.Append(shut_code);
}
/// <summary>
/// Adds feedback data markup constructed as follows
/// to the given StringBuilder builder.
///
/// If the feedback data is non-trivial then the
/// data is HTML encoded and inserted in a pre-tag
/// with CSS class 'feedback'.
///
/// If the feedback data is null then the constant
/// string
///
/// data is null
///
/// is inserted in a pre-tag with CSS class 'feedback'
/// and with color styled as red.
///
/// If the feedback data is empty then the constant
/// string
///
/// data is empty
///
/// is inserted in a pre-tag with CSS class 'feedback'
/// and with color styled as red.
///
/// See the const string FeedbackCSS.
/// </summary>
/// <param name="builder">The builder to collect the markup</param>
/// <param name="data">The feedback data</param>
public static void FeedbackData
(StringBuilder builder, string data)
{
if (StringTools.IsTrivial(data))
{
builder.Append(open_pre_feedback_red);
if (data == null)
{
builder.Append("data is null");
}
else
{
builder.Append("data is empty");
}
}
else
{
builder.Append(open_pre_feedback);
builder.Append(StringTools.HtmlEncode(data));
}
builder.Append(shut_pre);
}
