/// <summary>
/// returns cacheability of the passed text regarding all contained tokens
/// </summary>
/// <param name="strSourcetext">the text to parse for tokens to replace</param>
/// <returns>cacheability level (not - safe - fully)</returns>
/// <remarks>always check cacheability before caching a module!</remarks>
/// <history>
/// 10/19/2007 [sleupold] corrected to handle non-empty strings
/// </history>
public CacheLevel Cacheability(string strSourcetext)
{
CacheLevel IsSafe = CacheLevel.fullyCacheable;
if (strSourcetext != null && !string.IsNullOrEmpty(strSourcetext))
{
//initialize PropertyAccess classes
string DummyResult = ReplaceTokens(strSourcetext);
var Result = new StringBuilder();
foreach (Match currentMatch in TokenizerRegex.Matches(strSourcetext))
{
string strObjectName = currentMatch.Result("${object}");
if (!String.IsNullOrEmpty(strObjectName))
{
if (strObjectName == "[")
{
//nothing
}
else if (!PropertySource.ContainsKey(strObjectName.ToLower()))
{
}
else
{
CacheLevel c = PropertySource[strObjectName.ToLower()].Cacheability;
if (c < IsSafe)
{
IsSafe = c;
}
}
}
}
}
return(IsSafe);
}
protected virtual string ReplaceTokens(string strSourceText)
{
if (strSourceText == null)
{
return(string.Empty);
}
var Result = new StringBuilder();
foreach (Match currentMatch in TokenizerRegex.Matches(strSourceText))
{
string strObjectName = currentMatch.Result("${object}");
if (!String.IsNullOrEmpty(strObjectName))
{
if (strObjectName == "[")
{
strObjectName = ObjectLessToken;
}
string strPropertyName = currentMatch.Result("${property}");
string strFormat = currentMatch.Result("${format}");
string strIfEmptyReplacment = currentMatch.Result("${ifEmpty}");
string strConversion = replacedTokenValue(strObjectName, strPropertyName, strFormat);
if (!String.IsNullOrEmpty(strIfEmptyReplacment) && String.IsNullOrEmpty(strConversion))
{
strConversion = strIfEmptyReplacment;
}
Result.Append(strConversion);
}
else
{
Result.Append(currentMatch.Result("${text}"));
}
}
return(Result.ToString());
}
/// <summary>
/// Checks for present [Object:Property] tokens
/// </summary>
/// <param name="strSourceText">String with [Object:Property] tokens</param>
/// <returns></returns>
public bool ContainsTokens(string strSourceText)
{
if (!string.IsNullOrEmpty(strSourceText))
{
return(TokenizerRegex.Matches(strSourceText).Cast <Match>().Any(currentMatch => currentMatch.Result("${object}").Length > 0));
}
return(false);
}
/// <summary>
/// Checks for present [Object:Property] tokens
/// </summary>
/// <param name="strSourceText">String with [Object:Property] tokens</param>
/// <returns></returns>
/// <history>
/// 08/10/2007 [sleupold] created
/// 10/19/2007 [sleupold] corrected to ignore unchanged text returned (issue DNN-6526)
/// </history>
public bool ContainsTokens(string strSourceText)
{
if (!string.IsNullOrEmpty(strSourceText))
{
foreach (Match currentMatch in TokenizerRegex.Matches(strSourceText))
{
if (currentMatch.Result("${object}").Length > 0)
{
return(true);
}
}
}
return(false);
}
private static ArrayList <TokenizerRegex> LoadRules(string resName)
{
Regex splitRegex = new Regex(@"^(?<regex>.*)((--)|(==))\>(?<rhs>.*)$", RegexOptions.Compiled);
ArrayList <TokenizerRegex> rules = new ArrayList <TokenizerRegex>();
StreamReader rulesReader = new StreamReader(Utils.GetManifestResourceStream(typeof(Rules), resName));
string line;
while ((line = rulesReader.ReadLine()) != null)
{
if (line.Trim() == "stop")
{
break;
}
if (!line.StartsWith("#") && line.Trim() != "")
{
RegexOptions opt = RegexOptions.Compiled | RegexOptions.Multiline;
if (line.Contains("-->"))
{
opt |= RegexOptions.IgnoreCase;
}
TokenizerRegex tknRegex = new TokenizerRegex();
tknRegex.mVal = line.Contains("$val");
tknRegex.mTxt = line.Contains("$txt");
Match match = splitRegex.Match(line);
if (match.Success)
{
try
{
tknRegex.mRegex = new Regex(match.Result("${regex}").Trim(), opt);
tknRegex.mRhs = match.Result("${rhs}").Trim();
rules.Add(tknRegex);
}
catch
{
Console.WriteLine("*** Warning: Cannot parse line \"{0}\".", line);
}
}
else
{
Console.WriteLine("*** Warning: Cannot parse line \"{0}\".", line);
}
}
}
return(rules);
}
