internal IReadOnlyList <INamedItemInfo> LoadFunctionInfoFromPackageHelpIndex()
{
List <INamedItemInfo> functions = new List <INamedItemInfo>();
string content = null;
try {
string htmlFile = Path.Combine(this.InstallPath, this.Name, "html", "00index.html");
if (File.Exists(htmlFile))
{
using (StreamReader sr = new StreamReader(htmlFile, Encoding.UTF8)) {
content = sr.ReadToEnd();
}
}
} catch (IOException) { }
if (!string.IsNullOrEmpty(content))
{
HtmlTree tree = new HtmlTree(new TextStream(content));
tree.Build();
FunctionSearch functionSearch = new FunctionSearch(functions);
tree.Accept(functionSearch, null);
}
Dictionary <string, INamedItemInfo> functionIndex = new Dictionary <string, INamedItemInfo>();
foreach (INamedItemInfo ni in functions)
{
functionIndex[ni.Name] = ni;
}
IReadOnlyDictionary <string, string> mappedNames = GetMappedNames();
foreach (string mappedName in mappedNames.Keys)
{
INamedItemInfo ni;
string actualName = mappedNames[mappedName];
if (functionIndex.TryGetValue(actualName, out ni))
{
INamedItemInfo niAlias = new NamedItemInfo()
{
Name = mappedName,
Description = ni.Description,
ItemType = ni.ItemType
};
functions.Add(niAlias);
}
}
return(functions);
}
/// <summary>
/// Downloads the index html page specified, and extracts a set of known fields from it.
/// </summary>
/// <param name="packageUri">Location of index.html page.</param>
/// <param name="result">RPackage object to fill in. A new one is created if none is passed in.</param>
/// <returns>RPackage object populated with the information found in the html page.</returns>
/// <exception cref="WebException">Page cannot be loaded.</exception>
/// <remarks>
/// If an existing RPackage object is passed in, the fields that are already filled in
/// won't be overwritten by the ones extracted from the html page.
/// </remarks>
public static async Task <RPackage> RetrievePackageInfo(Uri packageUri, RPackage result = null)
{
string content;
using (var webClient = new WebClient()) {
content = await webClient.DownloadStringTaskAsync(packageUri);
}
var pkg = result ?? new RPackage();
var tree = new HtmlTree(new Microsoft.Web.Core.Text.TextStream(content));
tree.Build();
var search = new IndexVisitor(pkg);
tree.Accept(search, null);
return(pkg);
}
