eclipse plugin: implement starting the scenario in game

utils/java/eclipse_plugin/src/wesnoth_eclipse_plugin/utils/ProjectUtils.java

@@ -0,0 +1,74 @@
+/**
+ * @author Timotei Dolean
+ */
+package wesnoth_eclipse_plugin.utils;
+
+import java.io.File;
+
+import org.eclipse.core.resources.IProject;
+
+public class ProjectUtils
+{
+	public static String getPropertyValue(String fileName, String propertyName)
+	{
+		String value = "";
+		File file = new File(fileName);
+		if (!file.exists())
+			return null;
+
+		String fileContents = FileUtils.getFileContents(file);
+		int index = fileContents.indexOf(propertyName + "=");
+		if (index == -1)
+			return null;
+		index += (propertyName.length() + 1); // jump over the property name characters
+
+		// skipp spaces between the property name and value (if any)
+		while(index < fileContents.length() && fileContents.charAt(index) == ' ')
+			++index;
+
+		while(index < fileContents.length() && fileContents.charAt(index) != '#' &&
+				fileContents.charAt(index) != ' ' &&
+				fileContents.charAt(index) != '\r' && fileContents.charAt(index) != '\n')
+		{
+			value += fileContents.charAt(index);
+			++index;
+		}
+
+		return value;
+	}
+	public static String getCampaignID() throws Exception
+	{
+		if (WorkspaceUtils.getSelectedProject() == null &&
+				WorkspaceUtils.getSelectedFile() == null &&
+				WorkspaceUtils.getSelectedFolder() == null)
+		{
+			return null;
+		}
+
+		IProject project = WorkspaceUtils.getSelectedProject();
+		if (project == null)
+			project = WorkspaceUtils.getSelectedFile().getProject();
+		if (project == null)
+			project = WorkspaceUtils.getSelectedFolder().getProject();
+
+		return getPropertyValue(WorkspaceUtils.getPathRelativeToUserDir(project.getFile("_main.cfg")),"id");
+	}
+
+	public static String getScenarioID(String fileName)
+	{
+		return getPropertyValue(fileName,"id");
+	}
+
+	public static boolean isCampaignFile(String fileName)
+	{
+		//TODO: replace this with a better checking
+		String fileContentString = FileUtils.getFileContents(new File(fileName));
+		return (fileContentString.contains("[campaign]") && fileContentString.contains("[/campaign]"));
+	}
+	public static boolean isScenarioFile(String fileName)
+	{
+		//TODO: replace this with a better checking
+		String fileContentString = FileUtils.getFileContents(new File(fileName));
+		return (fileContentString.contains("[scenario]") && fileContentString.contains("[/scenario]"));
+	}
+}