private bool ImagePathIsResolvable(string imagePath)
{
DebugGuard.ArgumentIsNotNullOrEmpty(imagePath, "imagePath");
if (imagePath.StartsWith("http") ||
imagePath.StartsWith("/") ||
imagePath.StartsWith("#") ||
imagePath.StartsWith("$") ||
Regex.IsMatch(imagePath, @"[^A-Z,a-z,0-9,_,\-,/,\.]") ||
string.IsNullOrEmpty(Path.GetExtension(imagePath)))
{
return(false);
}
var fileExtension = Path.GetExtension(imagePath);
return(fileExtension.ToLower() != "css" && fileExtension.ToLower() != "js");
}
private string ResolveImagePath(string imagePath, string contextFolderWebDavUrl)
{
DebugGuard.ArgumentIsNotNullOrEmpty(imagePath, "imagePath");
DebugGuard.ArgumentIsNotNullOrEmpty(contextFolderWebDavUrl, "contextFolderWebDavUrl");
Logger.Debug("Resolving image path: " + imagePath);
var imageWebDavUrl = this.ConstructImageWebDavUrl(imagePath, contextFolderWebDavUrl);
var imageComponent = this.Context.Engine.GetObject <Component>(imageWebDavUrl);
if (imageComponent == null)
{
var errorMessage = string.Format("Resolved image WebDavUrl \"{0}\" does not exist.", imageWebDavUrl);
throw new Exception(errorMessage);
}
var imageUrl = this.Context.CreateCachedMultimediaItem(this.Context.Engine.GetObject <Component>(imageWebDavUrl)).Url;
return(imageUrl);
}
private string ConstructImageWebDavUrl(string imagePath, string contextFolderWebDavUrl)
{
DebugGuard.ArgumentIsNotNullOrEmpty(imagePath, "imagePath");
DebugGuard.ArgumentIsNotNullOrEmpty(contextFolderWebDavUrl, "contextFolderWebDavUrl");
var imagePathParts = imagePath.Split('/');
var imagePathPartsCount = imagePathParts.Length;
var containerWebDavUrlParts = contextFolderWebDavUrl.Split('/');
var containerWebDavUrlPartsCount = containerWebDavUrlParts.Length;
var trailingImagePath = string.Empty;
for (var i = 0; i < imagePathPartsCount; i++)
{
if (imagePathParts[i] == "..")
{
containerWebDavUrlPartsCount--;
}
else
{
trailingImagePath += "/" + imagePathParts[i];
}
}
var imageWebDavUrl = string.Empty;
for (var i = 0; i < containerWebDavUrlPartsCount; i++)
{
if (containerWebDavUrlParts[i] != string.Empty)
{
imageWebDavUrl += "/" + containerWebDavUrlParts[i];
}
}
return(imageWebDavUrl + trailingImagePath);
}
