private static Stream SearchResourceInAssembly(string key, Object obj)
{
Stream istr = null;
try
{
if (obj is Assembly)
{
istr = ((Assembly)obj).GetManifestResourceStream(key);
if (istr != null)
{
return(istr);
}
}
else if (obj is string)
{
string dir = (string)obj;
try
{
#if !NETSTANDARD1_6
istr = Assembly.LoadFrom(dir).GetManifestResourceStream(key);
#else
istr = AssemblyLoadContextUtil.LoadFromDefaultContextAssemblyPath(key).GetManifestResourceStream(key);
#endif
}
catch
{
}
if (istr != null)
{
return(istr);
}
string modkey = key.Replace('.', '/');
string fullPath = Path.Combine(dir, modkey);
if (File.Exists(fullPath))
{
return(new FileStream(fullPath, FileMode.Open, FileAccess.Read, FileShare.Read));
}
int idx = modkey.LastIndexOf('/');
if (idx >= 0)
{
modkey = modkey.Substring(0, idx) + "." + modkey.Substring(idx + 1);
fullPath = Path.Combine(dir, modkey);
if (File.Exists(fullPath))
{
return(new FileStream(fullPath, FileMode.Open, FileAccess.Read, FileShare.Read));
}
}
}
}
catch
{
}
return(istr);
}
private static void LoadITextResourceAssemblies()
{
#if !NETSTANDARD1_6
var loadedAssemblies = AppDomain.CurrentDomain.GetAssemblies().Where(a => !a.IsDynamic).ToList();
List <string> loadedPaths = new List <string>();
foreach (var a in AppDomain.CurrentDomain.GetAssemblies())
{
try
{
var path = a.Location;
loadedPaths.Add(path);
}
catch
{
// to skip exceptions for dynamically loaded assemblies without location
// such as anonymously hosted dynamicmethods assembly for example
}
}
var referencedPaths = Directory.GetFiles(FileUtil.GetBaseDirectory(), "*.dll");
var toLoad = referencedPaths.Where(referencePath => !loadedPaths.Any(loadedPath => loadedPath.Equals(referencePath, StringComparison.OrdinalIgnoreCase))).ToList();
foreach (String path in toLoad)
{
try {
AssemblyName name = AssemblyName.GetAssemblyName(path);
if (iTextResourceAssemblyNames.Contains(name.Name) && !loadedAssemblies.Any(assembly => assembly.GetName().Name.Equals(name.Name)))
{
loadedAssemblies.Add(AppDomain.CurrentDomain.Load(name));
}
}
catch
{
}
}
#else
string runtimeId = RuntimeEnvironment.GetRuntimeIdentifier();
List <AssemblyName> loadedAssemblies = null;
try {
loadedAssemblies = DependencyContext.Default?.GetRuntimeAssemblyNames(runtimeId).ToList();
} catch { }
if (loadedAssemblies == null)
{
loadedAssemblies = new List <AssemblyName>();
}
if (FileUtil.GetBaseDirectory() != null)
{
var referencedPaths = Directory.GetFiles(FileUtil.GetBaseDirectory(), "*.dll");
foreach (String path in referencedPaths)
{
try
{
AssemblyName name = AssemblyLoadContextUtil.GetAssemblyName(path);
if (iTextResourceAssemblyNames.Contains(name.Name) && !loadedAssemblies.Any(assembly => assembly.Name.Equals(name.Name)))
{
Assembly newAssembly = AssemblyLoadContextUtil.LoadFromDefaultContextAssemblyPath(path);
loadedAssemblies.Add(newAssembly.GetName());
}
}
catch
{
}
}
}
#endif
}
