Some minor fixes for the build Environment and Macros: some extra-checks for null were added

build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/envvar/EnvVarOperationProcessor.java

@@ -248,4 +248,38 @@ public class EnvVarOperationProcessor {
 			name = name.toUpperCase();
 		return name;
 	}
+	
+	static public IBuildEnvironmentVariable[] filterVariables(IBuildEnvironmentVariable variables[], String remove[]){
+		
+		if(variables == null || variables.length == 0)
+			return variables;
+		
+		IBuildEnvironmentVariable filtered[] = new IBuildEnvironmentVariable[variables.length];
+		int filteredNum = 0;
+		for(int i = 0; i < variables.length; i++){
+			IBuildEnvironmentVariable var = variables[i];
+			String name = null;
+			if(var != null && (name = normalizeName(var.getName())) != null){
+				boolean skip = false;
+				if(remove != null && remove.length > 0){
+					for(int j = 0; j < remove.length; j++){
+						if(remove[j] != null && remove[j].equals(name)){
+							skip = true;
+							break;
+						}
+					}
+				}
+				if(!skip)
+					filtered[filteredNum++] = var;
+			}
+		}
+
+		if(filteredNum != filtered.length){
+			IBuildEnvironmentVariable vars[] = new IBuildEnvironmentVariable[filteredNum];
+			for(int i = 0; i < filteredNum; i++)
+				vars[i] = filtered[i];
+			filtered = vars;
+		}
+		return filtered;
+	}
 }

build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/envvar/ExternalExtensionEnvironmentSupplier.java

@@ -209,22 +209,6 @@ public class ExternalExtensionEnvironmentSupplier implements
 	}
 	
 	protected IBuildEnvironmentVariable[] filterVariables(IBuildEnvironmentVariable variables[]){
-		if(variables == null || variables.length == 0)
+		return EnvVarOperationProcessor.filterVariables(variables,fNonOverloadableVariables);
-			return variables;
-		
-		IBuildEnvironmentVariable filtered[] = new IBuildEnvironmentVariable[variables.length];
-		int filteredNum = 0;
-		for(int i = 0; i < variables.length; i++){
-			if(getValidName(variables[i].getName()) != null)
-				filtered[filteredNum++] = variables[i];
-		}
-
-		if(filteredNum != filtered.length){
-			IBuildEnvironmentVariable vars[] = new IBuildEnvironmentVariable[filteredNum];
-			for(int i = 0; i < filteredNum; i++)
-				vars[i] = filtered[i];
-			filtered = vars;
-		}
-		return filtered;
 	}
 }

build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/envvar/UserDefinedEnvironmentSupplier.java

@@ -326,23 +326,7 @@ public class UserDefinedEnvironmentSupplier extends
 	}
 	
 	protected IBuildEnvironmentVariable[] filterVariables(IBuildEnvironmentVariable variables[]){
-		if(variables == null || variables.length == 0)
+		return EnvVarOperationProcessor.filterVariables(variables,fNonOverloadableVariables);
-			return variables;
-		
-		IBuildEnvironmentVariable filtered[] = new IBuildEnvironmentVariable[variables.length];
-		int filteredNum = 0;
-		for(int i = 0; i < variables.length; i++){
-			if(getValidName(variables[i].getName()) != null)
-				filtered[filteredNum++] = variables[i];
-		}
-
-		if(filteredNum != filtered.length){
-			IBuildEnvironmentVariable vars[] = new IBuildEnvironmentVariable[filteredNum];
-			for(int i = 0; i < filteredNum; i++)
-				vars[i] = filtered[i];
-			filtered = vars;
-		}
-		return filtered;
 	}
 
 }

build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/macros/ExternalExtensionMacroSupplier.java

@@ -177,23 +177,7 @@ public class ExternalExtensionMacroSupplier implements IBuildMacroSupplier {
 	}
 	
 	protected IBuildMacro[] filterMacros(IBuildMacro macros[]){
-		if(macros == null || macros.length == 0)
+		return MacroResolver.filterMacros(macros,fNonOverloadableMacros);
-			return macros;
-		
-		IBuildMacro filtered[] = new IBuildMacro[macros.length];
-		int filteredNum = 0;
-		for(int i = 0; i < macros.length; i++){
-			if(getValidName(macros[i].getName()) != null)
-				filtered[filteredNum++] = macros[i];
-		}
-
-		if(filteredNum != filtered.length){
-			IBuildMacro m[] = new IBuildMacro[filteredNum];
-			for(int i = 0; i < filteredNum; i++)
-				m[i] = filtered[i];
-			filtered = m;
-		}
-		return filtered;
 	}
 
 	protected IBuildMacroSupplier[] filterValidSuppliers(IBuildMacroSupplier suppliers[]){

build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/macros/MacroResolver.java

@@ -20,6 +20,7 @@ import org.eclipse.cdt.managedbuilder.core.IConfiguration;
 import org.eclipse.cdt.managedbuilder.core.ITool;
 import org.eclipse.cdt.managedbuilder.core.IToolChain;
 import org.eclipse.cdt.managedbuilder.internal.core.Tool;
+import org.eclipse.cdt.managedbuilder.internal.envvar.EnvVarOperationProcessor;
 import org.eclipse.cdt.managedbuilder.macros.BuildMacroException;
 import org.eclipse.cdt.managedbuilder.macros.IBuildMacro;
 import org.eclipse.cdt.managedbuilder.macros.IBuildMacroStatus;
@@ -389,4 +390,38 @@ public class MacroResolver {
 		return collector.getExplicisFileMacros();
 	}
 
+	static public IBuildMacro[] filterMacros(IBuildMacro macros[], String remove[]){
+		
+		if(macros == null || macros.length == 0)
+			return macros;
+		
+		IBuildMacro filtered[] = new IBuildMacro[macros.length];
+		int filteredNum = 0;
+		for(int i = 0; i < macros.length; i++){
+			IBuildMacro var = macros[i];
+			String name = null;
+			if(var != null && (name = EnvVarOperationProcessor.normalizeName(var.getName())) != null){
+				boolean skip = false;
+				if(remove != null && remove.length > 0){
+					for(int j = 0; j < remove.length; j++){
+						if(remove[j] != null && remove[j].equals(name)){
+							skip = true;
+							break;
+						}
+					}
+				}
+				if(!skip)
+					filtered[filteredNum++] = var;
+			}
+		}
+
+		if(filteredNum != filtered.length){
+			IBuildMacro m[] = new IBuildMacro[filteredNum];
+			for(int i = 0; i < filteredNum; i++)
+				m[i] = filtered[i];
+			filtered = m;
+		}
+		return filtered;
+	}
+
 }

build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/internal/macros/MbsMacroSupplier.java

@@ -494,10 +494,13 @@ public class MbsMacroSupplier implements IBuildMacroSupplier {
 				if(macro != null)
 					macros[num++] = macro;
 			}
-			IBuildMacro result[] = new IBuildMacro[num];
+			if(macros.length != num){
-			if(num > 0)
+				IBuildMacro tmp[] = new IBuildMacro[num];
-				System.arraycopy(macros,0,result,0,num);
+				if(num > 0)
-			return result;
+					System.arraycopy(macros,0,tmp,0,num);
+				macros = tmp;
+			}
+			return macros;
 		}
 		return null;
 	}

build/org.eclipse.cdt.managedbuilder.ui/src/org/eclipse/cdt/managedbuilder/internal/ui/EnvironmentBlock.java

@@ -894,7 +894,7 @@ public class EnvironmentBlock extends AbstractCOptionPage {
 		EnvVarCollector variables =  provider.getVariables(fSystemContextInfo,includeParentLevels);
 		if(variables == null)
 			return null;
-		return filterDisplayedVariables(variables.toArray(false));
+		return filterVariables(variables.toArray(false));
 	}
 
 	/* (non-Javadoc)
@@ -1054,24 +1054,8 @@ public class EnvironmentBlock extends AbstractCOptionPage {
 	/*
 	 * filteres the names to be displayed
 	 */
-	protected IBuildEnvironmentVariable[] filterDisplayedVariables(IBuildEnvironmentVariable variables[]){
+	protected IBuildEnvironmentVariable[] filterVariables(IBuildEnvironmentVariable variables[]){
-		if(variables == null || variables.length == 0)
+		return EnvVarOperationProcessor.filterVariables(variables,fHiddenVariables);
-			return variables;
-		
-		IBuildEnvironmentVariable filtered[] = new IBuildEnvironmentVariable[variables.length];
-		int filteredNum = 0;
-		for(int i = 0; i < variables.length; i++){
-			if(canDisplay(variables[i].getName()))
-				filtered[filteredNum++] = variables[i];
-		}
-
-		if(filteredNum != filtered.length){
-			IBuildEnvironmentVariable vars[] = new IBuildEnvironmentVariable[filteredNum];
-			for(int i = 0; i < filteredNum; i++)
-				vars[i] = filtered[i];
-			filtered = vars;
-		}
-		return filtered;
 	}
 	
 	private void updateState(BuildMacroException e){

build/org.eclipse.cdt.managedbuilder.ui/src/org/eclipse/cdt/managedbuilder/internal/ui/MacrosBlock.java

@@ -982,7 +982,7 @@ public class MacrosBlock extends AbstractCOptionPage {
 		IBuildMacro macros[] =  BuildMacroProvider.getMacros(fSystemContextInfo,includeParentLevels);
 		if(macros == null)
 			return null;
-		return filterDisplayedMacros(macros);
+		return filterMacros(macros);
 	}
 
 	/* (non-Javadoc)
@@ -1146,24 +1146,8 @@ public class MacrosBlock extends AbstractCOptionPage {
 	/*
 	 * filteres the macros to be displayed
 	 */
-	protected IBuildMacro[] filterDisplayedMacros(IBuildMacro macros[]){
+	protected IBuildMacro[] filterMacros(IBuildMacro macros[]){
-		if(macros == null || macros.length == 0)
+		return MacroResolver.filterMacros(macros,fHiddenMacros);
-			return macros;
-		
-		IBuildMacro filtered[] = new IBuildMacro[macros.length];
-		int filteredNum = 0;
-		for(int i = 0; i < macros.length; i++){
-			if(canDisplay(macros[i].getName()))
-				filtered[filteredNum++] = macros[i];
-		}
-
-		if(filteredNum != filtered.length){
-			IBuildMacro tmp[] = new IBuildMacro[filteredNum];
-			for(int i = 0; i < filteredNum; i++)
-				tmp[i] = filtered[i];
-			filtered = tmp;
-		}
-		return filtered;
 	}
 	
 	protected IEnvironmentVariableProvider obtainEnvironmentVariableProvider(){