SpecfileElement.java

/*******************************************************************************
 * Copyright (c) 2007, 2013 Red Hat, Inc.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Red Hat - initial API and implementation
 *******************************************************************************/

package org.eclipse.linuxtools.rpm.ui.editor.parser;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.linuxtools.internal.rpm.ui.editor.SpecfileLog;
import org.eclipse.linuxtools.internal.rpm.ui.editor.UiUtils;
import org.eclipse.linuxtools.internal.rpm.ui.editor.parser.Messages;
import org.eclipse.linuxtools.rpm.core.utils.RPMQuery;
import org.eclipse.osgi.util.NLS;

public class SpecfileElement {
    private Specfile specfile;
    private String name;
    private int lineNumber;
    private int lineStartPosition;
    private int lineEndPosition;

    public int getLineNumber() {
        return lineNumber;
    }

    public void setLineNumber(int lineNumber) {
        this.lineNumber = lineNumber;
    }

    public SpecfileElement() {
        // weird
    }

    public SpecfileElement(String name) {
        setName(name);
    }

    public String getName() {
        return resolve(name);
    }

    public final void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return name;
    }

    public int getLineEndPosition() {
        return lineEndPosition;
    }

    public void setLineEndPosition(int lineEndPosition) {
        this.lineEndPosition = lineEndPosition;
    }

    public int getLineStartPosition() {
        return lineStartPosition;
    }

    public void setLineStartPosition(int lineStartPosition) {
        this.lineStartPosition = lineStartPosition;
    }

    public Specfile getSpecfile() {
        return specfile;
    }

    public void setSpecfile(Specfile specfile) {
        this.specfile = specfile;
    }

    public String resolve(String toResolve) {
        if (specfile == null || toResolve.equals("")) {//$NON-NLS-1$
            if (toResolve.length() > 2
                    && toResolve.substring(2, toResolve.length() - 1).equals(
                            name)) {
                return toResolve;
            }
        }
        return UiUtils.resolveDefines(specfile, toResolve);
    }

    /**
     * Resolve using RPM to evaluate string
     *
     * @param toResolve
     *            The string to be evaluated
     * @return The evaluated string
     */
    public String resolveEval(String toResolve) {
        String str = ""; //$NON-NLS-1$
        try {
            if ((specfile == null || toResolve.equals("")) && toResolve.length() > 2 && toResolve.substring(2, toResolve.length() - 1).equals(name)) { //$NON-NLS-1$
                return toResolve;
            }
            str = RPMQuery.eval(UiUtils.resolveDefines(specfile, toResolve)).trim();
        } catch (CoreException e) {
            SpecfileLog.logError(NLS.bind(Messages.getString("SpecfileElement_unableToResolve"), toResolve), e); //$NON-NLS-1$
        }
        return str;
    }

}