/// <summary>
/// Converts the string representation of the filter options.
/// </summary>
/// <param name="str">A string containing the filter options to convert.</param>
/// <returns>The converted filter options.</returns>
public static AnalyticsFilterOptions Parse(string str)
{
AnalyticsFilterOptions options = new AnalyticsFilterOptions();
string[] a = str.Split(';');
for (int i = 0; i < a.Length; i++)
{
string[] b = a[i].Split(',');
if (i > 0)
{
options._filters.Add(AnalyticsFilterOperator.And);
}
for (int j = 0; j < b.Length; j++)
{
if (j > 0)
{
options._filters.Add(AnalyticsFilterOperator.Or);
}
Match m = Regex.Match(b[j], "^(ga:[a-zA-Z]+)(.{1,2})(.+?)$");
if (!m.Success)
{
throw new Exception("Unable to parse filter '" + b[j] + "'");
}
AnalyticsMetric metric;
AnalyticsMetricOperator metricOperator;
AnalyticsDimension dimension;
AnalyticsDimensionOperator dimensionOperator;
if (AnalyticsMetric.TryParse(m.Groups[1].Value, out metric) && AnalyticsMetricOperator.TryParse(m.Groups[2].Value, out metricOperator))
{
options._filters.Add(new AnalyticsMetricFilter(metric, metricOperator, HttpUtility.UrlDecode(m.Groups[3].Value)));
}
else if (AnalyticsDimension.TryParse(m.Groups[1].Value, out dimension) && AnalyticsDimensionOperator.TryParse(m.Groups[2].Value, out dimensionOperator))
{
options._filters.Add(new AnalyticsDimensionFilter(dimension, dimensionOperator, HttpUtility.UrlDecode(m.Groups[3].Value)));
}
else
{
// Currently the parsing will only work if the specified dimension or
// metric name matches a defined constant, so if Google adds a new
// dimension or metric, the constants must be updated before the parsing
// will work. I'm not sure how often Google adds new dimensions or metric,
// so perhaps this isn't a problem
throw new Exception("Unable to parse filter '" + b[j] + "'");
}
}
}
return(options);
}
/// <summary>
/// Converts the string representation of the filter options. A return value indicates
/// whether the conversion succeeded.
/// </summary>
/// <param name="str">A string containing the filter options to convert.</param>
/// <param name="options">The converted options if successful.</param>
/// <returns><var>true</var> if str was converted successfully; otherwise, <var>false</var>.</returns>
public static bool TryParse(string str, out AnalyticsFilterOptions options)
{
try {
options = Parse(str);
return(true);
} catch {
options = null;
return(false);
}
}