eclipse - how to use the variables from eclipse

Question

I'm developing an Eclipse plugin (Eclipse preferencePage), and I need to know how to use the variables from eclipse (workspace_loc ,project_loc,.... ), because my path on the preference page will be set with them. (that's my first question, let me know if you no understand)

Answer 1

使用IStringVariableManager接口访问这些变量的管理器：

IStringVariableManager manager = VariablesPlugin.getDefault().getStringVariableManager();

您需要将org.eclipse.core.variables插件添加到插件的依赖项中。

该接口具有各种访问包含变量的表达式的方法，主要方法之一是：

public String performStringSubstitution(String expression, boolean reportUndefinedVariables) throws CoreException;

您可以传递一个包含类似内容的字符串${workspace_loc}，它会返回解析的结果。