VariablesPlugin implementation for the path macro substitution

Author: Anton Krug

com.googlecode.cppcheclipse.core/META-INF/MANIFEST.MF

@@ -11,7 +11,8 @@ Require-Bundle: org.eclipse.core.runtime;bundle-version="3.5.0",
  com.google.guava;bundle-version="12.0.0",
  org.apache.commons.codec;bundle-version="1.4.0",
  org.apache.commons.io;bundle-version="2.0.1",
- org.apache.commons.exec;bundle-version="1.1.0"
+ org.apache.commons.exec;bundle-version="1.1.0",
+ org.eclipse.core.variables
 Bundle-ActivationPolicy: lazy
 Bundle-RequiredExecutionEnvironment: JavaSE-1.7
 Export-Package: com.googlecode.cppcheclipse.core,

com.googlecode.cppcheclipse.core/src/com/googlecode/cppcheclipse/core/Checker.java

@@ -74,7 +74,7 @@ public Checker(IConsole console, IPreferenceStore projectPreferences,
 			symbols = new Symbols();
 		}
 
-		String binaryPath = PathMacroReplacer.process(CppcheclipsePlugin.getConfigurationPreferenceStore()
+		String binaryPath = PathMacroReplacer.performMacroSubstitution(CppcheclipsePlugin.getConfigurationPreferenceStore()
 		.getString(IPreferenceConstants.P_BINARY_PATH));
 
 		command = new CppcheckCommand(console, binaryPath, settingsPreferences,

com.googlecode.cppcheclipse.core/src/com/googlecode/cppcheclipse/core/CppcheclipsePlugin.java

@@ -157,7 +157,7 @@ public boolean removeChangeListener(IPropertyChangeListener listener) {
 
 	private synchronized ProblemProfile getInternalNewProblemProfile(IConsole console, IPreferenceStore store) throws CloneNotSupportedException, XPathExpressionException, IOException, InterruptedException, ParserConfigurationException, SAXException, ProcessExecutionException {
 		if (profile == null) {
-			String binaryPath = PathMacroReplacer.process(CppcheclipsePlugin.getConfigurationPreferenceStore()
+			String binaryPath = PathMacroReplacer.performMacroSubstitution(CppcheclipsePlugin.getConfigurationPreferenceStore()
 			.getString(IPreferenceConstants.P_BINARY_PATH));
 			profile = new ProblemProfile(console, binaryPath);
 			registerChangeListener();

com.googlecode.cppcheclipse.core/src/com/googlecode/cppcheclipse/core/utils/PathMacroReplacer.java

@@ -1,11 +1,39 @@
 package com.googlecode.cppcheclipse.core.utils;
 
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.variables.IStringVariableManager;
+import org.eclipse.core.variables.VariablesPlugin;
+
+import com.googlecode.cppcheclipse.core.CppcheclipsePlugin;
+
+/**
+ * This util class is helping replace path containing macros into real path.
+ * 
+ * Following macros will resolve to:
+ * ${eclipse_home} to a Eclipse's installation folder.
+ * ${project_loc} to the folder of a active project. 
+ * ${workspace_loc} to the current open workspace.
+ * 
+ * https://help.eclipse.org/luna/index.jsp?topic=%2Forg.eclipse.platform.doc.user%2Fconcepts%2Fcpathvars.htm
+ * 
+ * @author Anton Krug
+ * 
+ */
+
 public class PathMacroReplacer {
 
-	// TODO implement the VariablesPlugin
-	
-	public static String process(String input) {
-		return input.replace("${eclipse_home}", System.getProperty("eclipse.home.location").replace("file:/", ""));
+	public static String performMacroSubstitution(String input) {
+		String ret = input;
+		
+		IStringVariableManager manager = VariablesPlugin.getDefault().getStringVariableManager();
+		try {
+			ret = manager.performStringSubstitution(ret, false);
+		} catch (CoreException e) {
+			// in case of a issue, keep the path as it is and log error
+			CppcheclipsePlugin.logError("Path macro subsitution failed", e); //$NON-NLS-1$
+		}		
+		
+		return ret;
 	}
 
 }

com.googlecode.cppcheclipse.ui/src/com/googlecode/cppcheclipse/ui/UpdateCheck.java

@@ -94,7 +94,7 @@ private static boolean needUpdateCheck() {
 	public static boolean startUpdateCheck() {
 		// do not start another update check, if one is already running
 		if (UpdateCheck.needUpdateCheck()) {
-			String binaryPath = PathMacroReplacer.process(CppcheclipsePlugin.getConfigurationPreferenceStore()
+			String binaryPath = PathMacroReplacer.performMacroSubstitution(CppcheclipsePlugin.getConfigurationPreferenceStore()
 			.getString(IPreferenceConstants.P_BINARY_PATH));
 			new UpdateCheck(true).check(binaryPath);
 			return true;

com.googlecode.cppcheclipse.ui/src/com/googlecode/cppcheclipse/ui/preferences/BinaryPathPreferencePage.java

@@ -117,7 +117,7 @@ protected boolean checkState() {
 				if (super.checkState()) {
 					// check if it is valid cppcheck binary
 					try {
-						String path = PathMacroReplacer.process(getTextControl().getText());					        
+						String path = PathMacroReplacer.performMacroSubstitution(getTextControl().getText());					        
 						VersionCommand versionCommand = new VersionCommand(
 								Console.getInstance(), path);
 						Version version = versionCommand