org.eclim.plugin.jdt.command.include.ImportUtils.java Source code

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Here is the source code for org.eclim.plugin.jdt.command.include.ImportUtils.java

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/**
 * Copyright (C) 2012  Eric Van Dewoestine
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.eclim.plugin.jdt.command.include;

import java.util.ArrayList;
import java.util.List;

import org.apache.commons.lang.StringUtils;

import org.eclim.plugin.core.preference.Preferences;

import org.eclipse.core.resources.IProject;

import org.eclipse.jdt.core.dom.ImportDeclaration;

/**
 * Utilities for working with java imports.
 *
 * @author Eric Van Dewoestine
 */
public class ImportUtils {
    public static boolean importsInSameGroup(int separationLevel, ImportDeclaration i1, ImportDeclaration i2) {
        // -1 = separate based on full package
        //  0 = never separate
        //  n = separate on comparing of n segments of the package.

        if (separationLevel == 0) {
            return true;
        }

        List<String> pn1 = packageName(i1);
        List<String> pn2 = packageName(i2);

        for (int i = 0; (i < separationLevel || separationLevel == -1); i++) {
            int level = i + 1;
            if (pn1.size() < level) {
                return pn2.size() < level;
            }
            if (pn2.size() < level) {
                return pn1.size() < level;
            }

            if (!pn1.get(i).equals(pn2.get(i))) {
                return false;
            }
        }

        return true;
    }

    public static List<String> packageName(ImportDeclaration imprt) {
        String name = imprt.getName().getFullyQualifiedName();
        List<String> pack = new ArrayList<String>();
        for (String part : StringUtils.split(name, '.')) {
            if (Character.isUpperCase(part.charAt(0))) {
                break;
            }
            pack.add(part);
        }
        return pack;
    }

    public static boolean isImportExcluded(IProject project, String name) throws Exception {
        String[] patterns = Preferences.getInstance().getArrayValue(project, "org.eclim.java.import.exclude");
        for (String pattern : patterns) {
            if (name.matches(pattern)) {
                return true;
            }
        }
        return false;
    }
}