- Add copyright notices to existing builtin python policies

- Implement system to dinamically pass plugins and policies search paths to
the sgpemv2 binary and tests (class GlobalSettings)
- Drastically reduce usage of hardcoded paths in code except as 
default overridable values


git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@514 3ecf2c5c-341e-0410-92b4-d18e462d057c

src/main.cc

@@ -34,13 +34,16 @@
 #include "backend/process.hh"
 #include "backend/policy.hh"
 #include "backend/policy_parameters.hh"
+#include "backend/global_settings.hh"
 #include "standard_io.hh"
 #include "text_simulation.hh"
 
 #include <glibmm/module.h>
 #include <glibmm/ustring.h>
 
+#include <algorithm>
 #include <cassert>
+#include <functional>
 #include <iostream>
 #include <string>
 #include <vector>
@@ -50,6 +53,32 @@ using namespace sgpem;
 using namespace memory;
 using Glib::ustring;
 
+
+static void load_pyloader_plugin() {
+    // FIXME: this will need to be moved to an 
+    // appropriate PluginManager class in the backend,
+    // and the Makefile fixed accordingly (partly done).
+    using Glib::Module;
+    
+    // Leaks willingly:
+    Module* pyloader = 0;
+
+    GlobalSettings::dir_iterator it = GlobalSettings::instance().modules_dir_begin();
+    while(it != GlobalSettings::instance().modules_dir_end()) {
+	std::string pyloader_path = Module::build_path(*it, "pyloader");
+	pyloader = new Module(pyloader_path);
+	if(*pyloader) break;
+	else delete pyloader;
+	it++;
+    }
+
+    if(!*pyloader)
+	std::cerr << Module::get_last_error() << std::endl;
+
+    // For the moment, we want to be sure it has been loaded:
+    assert(*pyloader);
+}
+
 int 
 main(int argc, char* argv[]) 
 {
@@ -59,20 +88,10 @@ main(int argc, char* argv[])
   setlocale(LC_ALL, "");
   bindtextdomain(PACKAGE, LOCALEDIR);
   textdomain(PACKAGE);
-  
-  // FIXME: this will need to be moved to an 
-  // appropriate PluginManager class in the backend,
-  // and the Makefile fixed accordingly
-  using Glib::Module;
-  std::string pyloader_path = Module::build_path(PLUGDIR, "pyloader");
-  Module pyloader(pyloader_path);
-  std::cerr << Module::get_last_error() << std::endl;
-  assert(pyloader);
 
   // Set up Glib thread support
   Glib::thread_init();
   
-  
   // Parses options and prepares vector with 
   // filenames of documents to be opened
   vector<string> filenames;
@@ -83,6 +102,7 @@ main(int argc, char* argv[])
     filenames.insert(filenames.begin(), a_ptr, a_ptr+a_count);
   }
   
+  load_pyloader_plugin();
   
   // Create an INITIAL STATE
   Process p1("P1", 0,5,1);