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[cpPlugins.git] / lib / cpPlugins / Interface.cxx

diff --git a/lib/cpPlugins/Interface.cxx b/lib/cpPlugins/Interface.cxx
index 611143e09d66ca6e170a44adb4edd73bcbc05e4b..58e468d29e114cc2b802a22fab6cb1b8f90d07f2 100644 (file)
--- a/lib/cpPlugins/Interface.cxx
+++ b/lib/cpPlugins/Interface.cxx
@@ -5,6 +5,7 @@
 #else // cpPlugins_SYS_WINDOWS
 #  include <dlfcn.h>
 #endif // cpPlugins_SYS_WINDOWS
+#include <cpPlugins_dirent.h>
 
 // -------------------------------------------------------------------------
 cpPlugins::Interface::
@@ -73,11 +74,23 @@ LoadPluginFile( const std::string& filename )
 {
   // Open library with its canonical path name
   auto canonical_fn = cpPlugins::PathHelper::CanonicalPath( filename );
+  if( canonical_fn == "" )
+    throw std::runtime_error(
+      std::string( "cpPlugins::Interface: Library \"" ) +
+      filename +
+      std::string( "\" does not exist." )
+      );
+
+  // Check if it was already loaded
+  if( this->m_DynLibraries.find( canonical_fn ) != this->m_DynLibraries.end( ) )
+    return;
+
+  // Ok, try to load the library
   void* hnd = Self::_DLOpen( canonical_fn );
   if( hnd == NULL )
     throw std::runtime_error(
       std::string( "cpPlugins::Interface: Could not load library \"" ) +
-      canonical_fn +
+      filename +
       std::string( "\"" )
       );
 
@@ -128,6 +141,37 @@ LoadPluginFile( const std::string& filename )
     Self::_DLClose( hnd );
 }
 
+// -------------------------------------------------------------------------
+unsigned int cpPlugins::Interface::
+LoadPluginDir( const std::string& dirname )
+{
+  DIR* dir;
+  struct dirent* ent;
+  unsigned int count = 0;
+  if( ( dir = opendir( dirname.c_str( ) ) ) != NULL )
+  {
+    while( ( ent = readdir( dir ) ) != NULL )
+    {
+      try
+      {
+        this->LoadPluginFile( ent->d_name );
+        count++;
+      }
+      catch( ... )
+      {
+        // Ignore errors
+      } // yrt
+    } // elihw
+    closedir( dir );
+  }
+  else
+    throw std::runtime_error(
+      std::string( "cpPlugins::Interface: Could not load directory " ) +
+      std::string( "\"" ) +  dirname + std::string( "\"" )
+      );
+  return( count );
+}
+
 // -------------------------------------------------------------------------
 void cpPlugins::Interface::
 UnloadAll( )