--- branches/mmeineke/mdtools/interface_implementation/Component.cpp	2002/07/09 18:40:59	10
+++ trunk/mdtools/interface_implementation/Component.cpp	2002/09/25 22:51:14	118
@@ -18,22 +18,29 @@ void Component::assignString( char* lhs, char* rhs ){
   if( start_array != NULL ) free( start_array );
 }
 
-void Component::assignString( char* lhs, char* rhs ){
+int Component::assignString( char* lhs, char* rhs, char** err ){
   
+  char myErr[1000];
+
+
   if( !strcmp( lhs, "type" ) ){
     strcpy( type, rhs );
     have_type = 1;
   }
 
   else{
-    std::cerr << "Invalid assignment type for Component: "
-	      << lhs << " = " << rhs << "\n";
-    exit(1);
+    sprintf(myErr, "Invalid assignment type for Component: %s = %s\n", lhs, rhs);
+    *err = strdup(myErr);
+    return 0;
   }
+
+  return = 1;
 }
 
-void Component::assignInt( char* lhs, int rhs ){
+int Component::assignInt( char* lhs, int rhs, char** err ){
   
+  char myErr[1000];
+
   if( !strcmp( lhs, "nMol" ) ){
     nMol = rhs;
     have_nMol = 1;
@@ -41,28 +48,32 @@ void Component::assignInt( char* lhs, int rhs ){
 
   else if( !strcmp( lhs, "molFraction" ) ){
     if( rhs > 1 || rhs < 0 ){
-      std::cerr << "Component error. " << rhs
-		<< " is an invalid molFraction. It must lie between 0 and 1\n";
-      exit(1);
+      sprintf(myErr,"Component error. %d is an invalid molFraction. It must lie between 0 and 1\n",rhs);
+      *err = strdup(myErr);
+      return 0;
     }
     molFraction = rhs;
     have_molFraction = 1;
   }
 
   else{
-    std::cerr << "Invalid assignment type for Component: "
-	      << lhs << " = " << rhs << "\n";
-    exit(1);
+    sprintf(myErr, "Invalid assignment type for Component: %s = %d\n", lhs, rhs);
+    *err = strdup(myErr);
+    return 0;
   }
+
+  return 1;
 }
 
-void Component::assignDouble( char* lhs, double rhs ){
+int Component::assignDouble( char* lhs, double rhs, char** err ){
 
+  char myErr[1000];
+
   if( !strcmp( lhs, "molFraction" ) ){
     if( rhs > 1 || rhs < 0 ){
-      std::cerr << "Component error. " << rhs
-		<< " is an invalid molFraction. It must lie between 0 and 1\n";
-      exit(1);
+      sprintf(myErr,"Component error. %lf is an invalid molFraction. It must lie between 0 and 1\n",rhs);
+      *err = strdup(myErr);
+      return 0;
     }
     molFraction = rhs;
     have_molFraction = 1;
@@ -74,10 +85,12 @@ void Component::assignDouble( char* lhs, double rhs ){
   }
   
   else{
-    std::cerr << "Invalid assignment type for Component: "
-	      << lhs << " = " << rhs << "\n";
-    exit(1);
+    sprintf(myErr, "Invalid assignment type for Component: %s = %lf\n", lhs, rhs);
+    *err = strdup(myErr);
+    return 0;
   }
+
+  return 1;
 }
 
 void Component::startIndex( int* the_start_array, int n_elements ){