[C#] Single file mode

Added "-csout <path>" parameter. If supplied all generated C# code will
be written to the given file. Makes it easier to integrate SWIG into
automated script based build processes.

Source/Modules/csharp.cxx

@@ -34,6 +34,7 @@ class CSHARP:public Language {
   File *f_init;
   File *f_directors;
   File *f_directors_h;
+  File *f_single;
   List *filenames_list;
 
   bool proxy_flag;		// Flag for generating proxy classes
@@ -78,6 +79,7 @@ class CSHARP:public Language {
   String *director_method_types;	// Director method types
   String *director_connect_parms;	// Director delegates parameter list for director connect call
   String *destructor_call;	//C++ destructor call if any
+  String *cs_out;
 
   // Director method stuff:
   List *dmethods_seq;
@@ -108,6 +110,7 @@ public:
       f_init(NULL),
       f_directors(NULL),
       f_directors_h(NULL),
+      f_single(NULL),
       filenames_list(NULL),
       proxy_flag(true),
       native_function_flag(false),
@@ -150,6 +153,7 @@ public:
       director_method_types(NULL),
       director_connect_parms(NULL),
       destructor_call(NULL),
+      cs_out(NULL),
       dmethods_seq(NULL),
       dmethods_table(NULL),
       n_dmethods(0),
@@ -244,6 +248,16 @@ public:
 	} else if (strcmp(argv[i], "-oldvarnames") == 0) {
 	  Swig_mark_arg(i);
 	  old_variable_names = true;
+    } else if (strcmp(argv[i], "-csout") == 0) {
+      if (argv[i + 1]) {
+        cs_out = NewString("");
+        Printf(cs_out, argv[i + 1]);
+        Swig_mark_arg(i);
+        Swig_mark_arg(i + 1);
+        i++;
+      } else {
+        Swig_arg_error();
+      }
 	} else if (strcmp(argv[i], "-help") == 0) {
 	  Printf(stdout, "%s\n", usage);
 	}
@@ -423,18 +437,7 @@ public:
     }
     // Generate the intermediary class
     {
-      String *filen = NewStringf("%s%s.cs", SWIG_output_directory(), imclass_name);
+      File *f_im = getFile(SWIG_output_directory(), imclass_name);
-      File *f_im = NewFile(filen, "w", SWIG_output_files());
-      if (!f_im) {
-	FileErrorDisplay(filen);
-	SWIG_exit(EXIT_FAILURE);
-      }
-      Append(filenames_list, Copy(filen));
-      Delete(filen);
-      filen = NULL;
-
-      // Start writing out the intermediary class file
-      emitBanner(f_im);
 
       addOpenNamespace(0, f_im);
 
@@ -462,23 +465,13 @@ public:
       Printf(f_im, "}\n");
       addCloseNamespace(0, f_im);
 
-      Delete(f_im);
+      if(f_im != f_single)
+        Delete(f_im);
     }
 
     // Generate the C# module class
     {
-      String *filen = NewStringf("%s%s.cs", SWIG_output_directory(), module_class_name);
+      File *f_module = getFile(SWIG_output_directory(), module_class_name);
-      File *f_module = NewFile(filen, "w", SWIG_output_files());
-      if (!f_module) {
-	FileErrorDisplay(filen);
-	SWIG_exit(EXIT_FAILURE);
-      }
-      Append(filenames_list, Copy(filen));
-      Delete(filen);
-      filen = NULL;
-
-      // Start writing out the module class file
-      emitBanner(f_module);
 
       addOpenNamespace(0, f_module);
 
@@ -514,7 +507,8 @@ public:
       Printf(f_module, "}\n");
       addCloseNamespace(0, f_module);
 
-      Delete(f_module);
+      if(f_module != f_single)
+        Delete(f_module);
     }
 
     if (upcasts_code)
@@ -613,6 +607,11 @@ public:
       f_directors_h = NULL;
     }
 
+    if(f_single) {
+      Dump(f_single, f_begin);
+      Delete(f_single);
+    }
+
     Dump(f_wrappers, f_begin);
     Wrapper_pretty_print(f_init, f_begin);
     Delete(f_header);
@@ -635,6 +634,44 @@ public:
     Printf(f, "//------------------------------------------------------------------------------\n\n");
   }
   
+  /* -----------------------------------------------------------------------------
+   * getFile()
+   * ----------------------------------------------------------------------------- */
+
+  File* getFile(const String* dir, String* name) {
+    if(cs_out) {
+      if(!f_single) {
+        String* filen = NewStringf("%s", cs_out);
+        f_single = NewFile(filen, "w", SWIG_output_files());
+        if(!f_single) {
+          FileErrorDisplay(filen);
+          SWIG_exit(EXIT_FAILURE);
+		}
+        Append(filenames_list, Copy(filen));
+        Delete(filen);
+        filen = NULL;
+
+		Printf(stdout, "create single file");
+
+        emitBanner(f_single);
+	  }
+      return f_single;
+    } else {
+      String* filen = NewStringf("%s%s.cs", dir, name);
+      File* f = NewFile(filen, "w", SWIG_output_files());
+      if(!f) {
+        FileErrorDisplay(f);
+        SWIG_exit(EXIT_FAILURE);
+	  }
+      Append(filenames_list, Copy(filen));
+      Delete(filen);
+      filen = NULL;
+
+      emitBanner(f);
+      return f;
+    }
+  }
+
   /*-----------------------------------------------------------------------
    * Add new director upcall signature
    *----------------------------------------------------------------------*/
@@ -1198,18 +1235,7 @@ public:
 	} else {
 	  // Global enums are defined in their own file
 	  String *output_directory = outputDirectory(nspace);
-	  String *filen = NewStringf("%s%s.cs", output_directory, symname);
+	  File *f_enum = getFile(output_directory, symname);
-	  File *f_enum = NewFile(filen, "w", SWIG_output_files());
-	  if (!f_enum) {
-	    FileErrorDisplay(filen);
-	    SWIG_exit(EXIT_FAILURE);
-	  }
-	  Append(filenames_list, Copy(filen));
-	  Delete(filen);
-	  filen = NULL;
-
-	  // Start writing out the enum file
-	  emitBanner(f_enum);
 
 	  addOpenNamespace(nspace, f_enum);
 
@@ -1217,7 +1243,8 @@ public:
 		 "\n", enum_code, "\n", NIL);
 
 	  addCloseNamespace(nspace, f_enum);
-	  Delete(f_enum);
+      if(f_enum != f_single)
+        Delete(f_enum);
 	  Delete(output_directory);
 	}
       } else {
@@ -1920,18 +1947,7 @@ public:
       // Each outer proxy class goes into a separate file
       if (!has_outerclass) {
 	String *output_directory = outputDirectory(nspace);
-	String *filen = NewStringf("%s%s.cs", output_directory, proxy_class_name);
+	f_proxy = getFile(output_directory, proxy_class_name);
-	f_proxy = NewFile(filen, "w", SWIG_output_files());
-	if (!f_proxy) {
-	  FileErrorDisplay(filen);
-	  SWIG_exit(EXIT_FAILURE);
-	}
-	Append(filenames_list, Copy(filen));
-	Delete(filen);
-	filen = NULL;
-
-	// Start writing out the proxy class file
-	emitBanner(f_proxy);
 
 	addOpenNamespace(nspace, f_proxy);
       }
@@ -1991,7 +2007,8 @@ public:
       if (!has_outerclass) {
 	Printf(f_proxy, "}\n");
 	addCloseNamespace(nspace, f_proxy);
-	Delete(f_proxy);
+    if(f_proxy != f_single)
+      Delete(f_proxy);
 	f_proxy = NULL;
       } else {
 	for (int i = 0; i < nesting_depth; ++i)
@@ -3216,18 +3233,7 @@ public:
     Setline(n, line_number);
 
     String *swigtype = NewString("");
-    String *filen = NewStringf("%s%s.cs", SWIG_output_directory(), classname);
+    File *f_swigtype = getFile(SWIG_output_directory(), classname);
-    File *f_swigtype = NewFile(filen, "w", SWIG_output_files());
-    if (!f_swigtype) {
-      FileErrorDisplay(filen);
-      SWIG_exit(EXIT_FAILURE);
-    }
-    Append(filenames_list, Copy(filen));
-    Delete(filen);
-    filen = NULL;
-
-    // Start writing out the type wrapper class file
-    emitBanner(f_swigtype);
 
     addOpenNamespace(0, f_swigtype);
 
@@ -3262,8 +3268,8 @@ public:
     Printv(f_swigtype, swigtype, NIL);
 
     addCloseNamespace(0, f_swigtype);
-
+    if(f_swigtype != f_single)
-    Delete(f_swigtype);
+      Delete(f_swigtype);
     Delete(swigtype);
     Delete(n);
   }
@@ -4285,4 +4291,5 @@ C# Options (available with -csharp)\n\
      -noproxy        - Generate the low-level functional interface instead\n\
                        of proxy classes\n\
      -oldvarnames    - Old intermediary method names for variable wrappers\n\
+	 -csout <path>   - Write all C# to a single file located at <path>\n\
 \n";