public byte[] TransformFile(PhysicalFileSource source, byte[] inputContent)
{
Log.WriteLine("Transforming CSS For '{0}'", source.VirtualPath);
string stringValue = inputContent.ReadString();
stringValue = Regex.Replace(stringValue, "url\\((?<quotation>['\"]?)(?<capturedUrl>[^\\)]*)", x =>
{
var url = x.Groups["capturedUrl"];
if (url != null)
{
var urlValue = url.Value.Trim();
if (!urlValue.StartsWith("~"))
{
return(x.Value);
}
var quotation = x.Groups["quotation"];
var quoteWrapper = quotation != null ? quotation.Value : "";
if (urlValue.EndsWith(quoteWrapper))
{
urlValue = urlValue.Substring(0, urlValue.Length - quoteWrapper.Length);
}
var virtualPath = urlValue;
// look for a placeholder in the virtual path
if (virtualPath.Contains(RejuicerConfigurationSource.FilenameUniquePlaceholder))
{
// Look for a configuration
if (!RejuicerEngine.HasConfigurationFor(virtualPath))
{
// Create a configuration for this file
OnRequest.ForImage(virtualPath)
.Compact
.File(virtualPath.Replace(RejuicerConfigurationSource.FilenameUniquePlaceholder, ""))
.Configure();
}
// get the timestamp and write it out into the URL...
var config = RejuicerEngine.GetConfigFor(virtualPath);
if (config != null)
{
// don't timestamp the URL in pass through mode
virtualPath = RejuicerEngine.IsPassThroughEnabled ? config.GetNonTimestampedUrl(_cacheProvider) : config.GetTimestampedUrl(_cacheProvider);
// Need to add a dependency of this CSS file to the now linked image.
source.AddDependency(RejuicerEngine.GetConfigFor(urlValue));
}
else
{
// Could not configure rejuicer for this file. It may not exist,
// so just return the url
return(url.Value);
}
}
var outputUrl = _virtualPathResolver.GetRelativeUrl(virtualPath);
return(string.Format("url({1}{0}{1}", outputUrl, quoteWrapper));
}
return(x.Value);
});
return(stringValue.AsBytes());
}
