Example usage for org.eclipse.jdt.internal.core ClasspathEntry DOT_DOT

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String DOT_DOT

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Usage

From source file:io.sarl.eclipse.util.JavaClasspathParser.java

License:Apache License

/**
 * Decodes one XML element with the XML stream.
 *
 * @param element//w w w.ja  v  a2s . c om
 *            - the considered element
 * @param projectName
 *            - the name of project containing the .classpath file
 * @param projectRootAbsoluteFullPath
 *            - he path to project containing the .classpath file
 * @param unknownElements
 *            - map of unknown elements
 * @return the set of CLasspath ENtries extracted from the considered element
 */
@SuppressWarnings({ "checkstyle:npathcomplexity", "checkstyle:cyclomaticcomplexity" })
public static IClasspathEntry elementDecode(Element element, String projectName,
        IPath projectRootAbsoluteFullPath, Map<IPath, UnknownXmlElements> unknownElements) {
    final IPath projectPath = projectRootAbsoluteFullPath;
    final NamedNodeMap attributes = element.getAttributes();
    final NodeList children = element.getChildNodes();
    final boolean[] foundChildren = new boolean[children.getLength()];
    final String kindAttr = removeAttribute(ClasspathEntry.TAG_KIND, attributes);
    final String pathAttr = removeAttribute(ClasspathEntry.TAG_PATH, attributes);

    // ensure path is absolute
    IPath path = new Path(pathAttr);
    final int kind = kindFromString(kindAttr);
    if (kind != IClasspathEntry.CPE_VARIABLE && kind != IClasspathEntry.CPE_CONTAINER && !path.isAbsolute()) {
        if (!(path.segmentCount() > 0 && path.segment(0).equals(ClasspathEntry.DOT_DOT))) {
            path = projectPath.append(path);
        }
    }
    // source attachment info (optional)
    IPath sourceAttachmentPath = element.hasAttribute(ClasspathEntry.TAG_SOURCEPATH)
            ? new Path(removeAttribute(ClasspathEntry.TAG_SOURCEPATH, attributes))
            : null;
    if (kind != IClasspathEntry.CPE_VARIABLE && sourceAttachmentPath != null
            && !sourceAttachmentPath.isAbsolute()) {
        sourceAttachmentPath = projectPath.append(sourceAttachmentPath);
    }
    final IPath sourceAttachmentRootPath = element.hasAttribute(ClasspathEntry.TAG_ROOTPATH)
            ? new Path(removeAttribute(ClasspathEntry.TAG_ROOTPATH, attributes))
            : null;

    // exported flag (optional)
    final boolean isExported = removeAttribute(ClasspathEntry.TAG_EXPORTED, attributes).equals("true"); //$NON-NLS-1$

    // inclusion patterns (optional)
    IPath[] inclusionPatterns = decodePatterns(attributes, ClasspathEntry.TAG_INCLUDING);
    if (inclusionPatterns == null) {
        inclusionPatterns = ClasspathEntry.INCLUDE_ALL;
    }

    // exclusion patterns (optional)
    IPath[] exclusionPatterns = decodePatterns(attributes, ClasspathEntry.TAG_EXCLUDING);
    if (exclusionPatterns == null) {
        exclusionPatterns = ClasspathEntry.EXCLUDE_NONE;
    }

    // access rules (optional)
    NodeList attributeList = getChildAttributes(ClasspathEntry.TAG_ACCESS_RULES, children, foundChildren);
    IAccessRule[] accessRules = decodeAccessRules(attributeList);

    // backward compatibility
    if (accessRules == null) {
        accessRules = getAccessRules(inclusionPatterns, exclusionPatterns);
    }

    // combine access rules (optional)
    final boolean combineAccessRestrictions = !removeAttribute(ClasspathEntry.TAG_COMBINE_ACCESS_RULES,
            attributes).equals("false"); //$NON-NLS-1$

    // extra attributes (optional)
    attributeList = getChildAttributes(ClasspathEntry.TAG_ATTRIBUTES, children, foundChildren);
    final IClasspathAttribute[] extraAttributes = decodeExtraAttributes(attributeList);

    // custom output location
    final IPath outputLocation = element.hasAttribute(ClasspathEntry.TAG_OUTPUT)
            ? projectPath.append(removeAttribute(ClasspathEntry.TAG_OUTPUT, attributes))
            : null;

    String[] unknownAttributes = null;
    ArrayList<String> unknownChildren = null;

    if (unknownElements != null) {
        // unknown attributes
        final int unknownAttributeLength = attributes.getLength();
        if (unknownAttributeLength != 0) {
            unknownAttributes = new String[unknownAttributeLength * 2];
            for (int i = 0; i < unknownAttributeLength; i++) {
                final Node attribute = attributes.item(i);
                unknownAttributes[i * 2] = attribute.getNodeName();
                unknownAttributes[i * 2 + 1] = attribute.getNodeValue();
            }
        }

        // unknown children
        for (int i = 0, length = foundChildren.length; i < length; i++) {
            if (!foundChildren[i]) {
                final Node node = children.item(i);
                if (node.getNodeType() != Node.ELEMENT_NODE) {
                    continue;
                }
                if (unknownChildren == null) {
                    unknownChildren = new ArrayList<>();
                }
                final StringBuffer buffer = new StringBuffer();
                decodeUnknownNode(node, buffer);
                unknownChildren.add(buffer.toString());
            }
        }
    }

    // recreate the CP entry
    IClasspathEntry entry = null;
    switch (kind) {

    case IClasspathEntry.CPE_PROJECT:
        /*
         * IPackageFragmentRoot.K_SOURCE, IClasspathEntry.CPE_PROJECT, path, ClasspathEntry.INCLUDE_ALL, // inclusion patterns
         * ClasspathEntry.EXCLUDE_NONE, // exclusion patterns null, // source attachment null, // source attachment root null, // specific output
         * folder
         */
        entry = new ClasspathEntry(IPackageFragmentRoot.K_SOURCE, IClasspathEntry.CPE_PROJECT, path,
                ClasspathEntry.INCLUDE_ALL, ClasspathEntry.EXCLUDE_NONE, null, null, null, isExported,
                accessRules, combineAccessRestrictions, extraAttributes);
        break;
    case IClasspathEntry.CPE_LIBRARY:
        entry = JavaCore.newLibraryEntry(path, sourceAttachmentPath, sourceAttachmentRootPath, accessRules,
                extraAttributes, isExported);
        break;
    case IClasspathEntry.CPE_SOURCE:
        // must be an entry in this project or specify another project
        final String projSegment = path.segment(0);
        if (projSegment != null && projSegment.equals(projectName)) {
            // this project
            entry = JavaCore.newSourceEntry(path, inclusionPatterns, exclusionPatterns, outputLocation,
                    extraAttributes);
        } else {
            if (path.segmentCount() == 1) {
                // another project
                entry = JavaCore.newProjectEntry(path, accessRules, combineAccessRestrictions, extraAttributes,
                        isExported);
            } else {
                // an invalid source folder
                entry = JavaCore.newSourceEntry(path, inclusionPatterns, exclusionPatterns, outputLocation,
                        extraAttributes);
            }
        }
        break;
    case IClasspathEntry.CPE_VARIABLE:
        entry = JavaCore.newVariableEntry(path, sourceAttachmentPath, sourceAttachmentRootPath, accessRules,
                extraAttributes, isExported);
        break;
    case IClasspathEntry.CPE_CONTAINER:
        entry = JavaCore.newContainerEntry(path, accessRules, extraAttributes, isExported);
        break;
    case ClasspathEntry.K_OUTPUT:
        if (!path.isAbsolute()) {
            return null;
        }
        /*
         * ClasspathEntry.EXCLUDE_NONE, null, // source attachment null, // source attachment root null, // custom output location false, null, //
         * no access rules false, // no accessible files to combine
         */
        entry = new ClasspathEntry(ClasspathEntry.K_OUTPUT, IClasspathEntry.CPE_LIBRARY, path,
                ClasspathEntry.INCLUDE_ALL, ClasspathEntry.EXCLUDE_NONE, null, null, null, false, null, false,
                ClasspathEntry.NO_EXTRA_ATTRIBUTES);
        break;
    default:
        throw new AssertionFailedException(Messages.bind(Messages.classpath_unknownKind, kindAttr));
    }

    if (unknownAttributes != null || unknownChildren != null) {
        final UnknownXmlElements unknownXmlElements = new UnknownXmlElements();
        unknownXmlElements.attributes = unknownAttributes;
        unknownXmlElements.children = unknownChildren;
        if (unknownElements != null) {
            unknownElements.put(path, unknownXmlElements);
        }
    }

    return entry;
}

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