Example usage for java.util Stack peek

Introduction

In this page you can find the example usage for java.util Stack peek.

Prototype

public synchronized E peek() 

Source Link

Document

Looks at the object at the top of this stack without removing it from the stack.

Usage

From source file:org.apache.fop.fonts.type1.AFMParser.java

private String parseCharMetrics(String line, Stack<Object> stack, String afmFileName) throws IOException {
    String trimmedLine = line.trim();
    if (END_CHAR_METRICS.equals(trimmedLine)) {
        return trimmedLine;
    }// w w w  .  j a v a  2 s .c om
    AFMFile afm = (AFMFile) stack.peek();
    String encoding = afm.getEncodingScheme();
    CharMetricsHandler charMetricsHandler = CharMetricsHandler.getHandler(VALUE_PARSERS, encoding);
    AFMCharMetrics chm = charMetricsHandler.parse(trimmedLine, stack, afmFileName);
    afm.addCharMetrics(chm);
    return null;
}

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From source file:org.wso2.carbon.mediator.datamapper.DataMapperMediator.java

/**
 * Retrieve property values and insert into a map
 *
 * @param propertiesNamesList Required properties
 * @param synCtx              Message context
 * @return Map filed with property name and the value
 *///  w  w  w  .j a v  a2s .c  o  m
private Map<String, Map<String, Object>> getPropertiesMap(List<String> propertiesNamesList,
        MessageContext synCtx) {
    Map<String, Map<String, Object>> propertiesMap = new HashMap<>();
    String[] contextAndName;
    Object value;
    org.apache.axis2.context.MessageContext axis2MsgCtx = ((Axis2MessageContext) synCtx)
            .getAxis2MessageContext();
    HashMap functionProperties = new HashMap();
    Stack<TemplateContext> templeteContextStack = ((Stack) synCtx
            .getProperty(SynapseConstants.SYNAPSE__FUNCTION__STACK));
    if (templeteContextStack != null && !templeteContextStack.isEmpty()) {
        TemplateContext templateContext = templeteContextStack.peek();
        functionProperties.putAll(templateContext.getMappedValues());
    }
    for (String propertyName : propertiesNamesList) {
        contextAndName = propertyName.split("\\['|'\\]");
        switch (contextAndName[0].toUpperCase()) {
        case DEFAULT_CONTEXT:
        case SYNAPSE_CONTEXT:
            value = synCtx.getProperty(contextAndName[1]);
            break;
        case TRANSPORT_CONTEXT:
            value = ((Map) axis2MsgCtx.getProperty(TRANSPORT_HEADERS)).get(contextAndName[1]);
            break;
        case AXIS2_CONTEXT:
            value = axis2MsgCtx.getProperty(contextAndName[1]);
            break;
        case AXIS2_CLIENT_CONTEXT:
            value = axis2MsgCtx.getOptions().getProperty(contextAndName[1]);
            break;
        case OPERATIONS_CONTEXT:
            value = axis2MsgCtx.getOperationContext().getProperty(contextAndName[1]);
            break;
        case FUNCTION_CONTEXT:
            value = functionProperties.get(contextAndName[1]);
            break;
        default:
            log.warn(contextAndName[0] + " scope is not found. Setting it to an empty value.");
            value = EMPTY_STRING;
        }
        if (value == null) {
            log.warn(propertyName + "not found. Setting it to an empty value.");
            value = EMPTY_STRING;
        }
        insertToMap(propertiesMap, contextAndName, value);
    }

    return propertiesMap;
}

---

From source file:net.dv8tion.jda.core.entities.impl.MessageImpl.java

@Override
public synchronized String getStrippedContent() {
    if (strippedContent == null) {
        String tmp = getContent();
        //all the formatting keys to keep track of
        String[] keys = new String[] { "*", "_", "`", "~~" };

        //find all tokens (formatting strings described above)
        TreeSet<FormatToken> tokens = new TreeSet<>((t1, t2) -> Integer.compare(t1.start, t2.start));
        for (String key : keys) {
            Matcher matcher = Pattern.compile(Pattern.quote(key)).matcher(tmp);
            while (matcher.find()) {
                tokens.add(new FormatToken(key, matcher.start()));
            }//  ww  w .  j  a  v a 2s  . c o m
        }

        //iterate over all tokens, find all matching pairs, and add them to the list toRemove
        Stack<FormatToken> stack = new Stack<>();
        List<FormatToken> toRemove = new ArrayList<>();
        boolean inBlock = false;
        for (FormatToken token : tokens) {
            if (stack.empty() || !stack.peek().format.equals(token.format)
                    || stack.peek().start + token.format.length() == token.start) {
                //we are at opening tag
                if (!inBlock) {
                    //we are outside of block -> handle normally
                    if (token.format.equals("`")) {
                        //block start... invalidate all previous tags
                        stack.clear();
                        inBlock = true;
                    }
                    stack.push(token);
                } else if (token.format.equals("`")) {
                    //we are inside of a block -> handle only block tag
                    stack.push(token);
                }
            } else if (!stack.empty()) {
                //we found a matching close-tag
                toRemove.add(stack.pop());
                toRemove.add(token);
                if (token.format.equals("`") && stack.empty()) {
                    //close tag closed the block
                    inBlock = false;
                }
            }
        }

        //sort tags to remove by their start-index and iteratively build the remaining string
        Collections.sort(toRemove, (t1, t2) -> Integer.compare(t1.start, t2.start));
        StringBuilder out = new StringBuilder();
        int currIndex = 0;
        for (FormatToken formatToken : toRemove) {
            if (currIndex < formatToken.start) {
                out.append(tmp.substring(currIndex, formatToken.start));
            }
            currIndex = formatToken.start + formatToken.format.length();
        }
        if (currIndex < tmp.length()) {
            out.append(tmp.substring(currIndex));
        }
        //return the stripped text, escape all remaining formatting characters (did not have matching open/close before or were left/right of block
        strippedContent = out.toString().replace("*", "\\*").replace("_", "\\_").replace("~", "\\~");
    }
    return strippedContent;
}

---

From source file:com._4dconcept.springframework.data.marklogic.core.query.QueryBuilder.java

@Nullable
private Criteria buildCriteria(Object bean, MarklogicPersistentEntity<?> entity) {
    Stack<Criteria> stack = new Stack<>();
    PersistentPropertyAccessor propertyAccessor = entity.getPropertyAccessor(bean);

    entity.doWithProperties((PropertyHandler<MarklogicPersistentProperty>) property -> {
        Object value = propertyAccessor.getProperty(property);
        if (hasContent(value)) {
            if (stack.empty()) {
                stack.push(buildCriteria(property, value));
            } else {
                Criteria criteria = stack.peek();
                if (criteria.getOperator() == null) {
                    Criteria andCriteria = new Criteria(Criteria.Operator.and,
                            new ArrayList<>(Arrays.asList(criteria, buildCriteria(property, value))));
                    stack.pop();/*w w w .  ja  va2s. co  m*/
                    stack.push(andCriteria);
                } else {
                    Criteria subCriteria = buildCriteria(property, value);
                    if (subCriteria != null) {
                        criteria.add(subCriteria);
                    }
                }
            }
        }
    });

    return stack.empty() ? null : stack.peek();
}

---

From source file:org.jumpmind.metl.core.runtime.component.XmlFormatter.java

private boolean addModelEntityXml(Stack<DocElement> parentStack, Document generatedXml, String entityId) {

    DocElement entityDocElement = entityAttributeDtls.get(entityId);
    boolean entityUsed = false;

    if (entityDocElement != null) {
        entityUsed = true;/*from w w  w  .j  a v a2  s.c  o m*/
        while (!parentStack.isEmpty() && parentStack.peek().level >= entityDocElement.level) {
            parentStack.pop();
        }

        // TODO: this guys parent entity might be the last entity, not
        // static
        // data. What i have below works assuming the entities line up
        // parent to child
        // still needs work
        if (parentStack.isEmpty() || parentStack.peek().level < entityDocElement.level - 1) {
            fillStackWithStaticParentElements(parentStack, entityDocElement, generatedXml);
        }

        Element entityElementToAdd = entityDocElement.xmlElement.clone();
        DocElement parentToAttach = parentStack.peek();
        parentToAttach.xmlElement.addContent(0, entityElementToAdd);
        parentStack
                .push(new DocElement(entityDocElement.level, entityElementToAdd, null, entityDocElement.xpath));
    }
    return entityUsed;
}

---

From source file:org.apache.cocoon.components.treeprocessor.variables.PreparedVariableResolver.java

public final String resolve(InvokeContext context, Map objectModel) throws PatternException {
    List mapStack = null; // get the stack only when necessary - lazy inside the loop
    int stackSize = 0;

    if (needsMapStack) {
        if (context == null) {
            throw new PatternException("Need an invoke context to resolve " + this);
        }/*  www. ja v a 2  s .  c o m*/
        mapStack = context.getMapStack();
        stackSize = mapStack.size();
    }

    Stack stack = new Stack();

    for (Iterator i = tokens.iterator(); i.hasNext();) {
        Token token = (Token) i.next();
        Token last;
        switch (token.getType()) {
        case TEXT:
            if (stack.empty()) {
                stack.push(new Token(EXPR, token.getStringValue()));
            } else {
                last = (Token) stack.peek();
                if (last.hasType(EXPR)) {
                    last.merge(token);
                } else {
                    stack.push(new Token(EXPR, token.getStringValue()));
                }
            }
            break;
        case CLOSE:
            Token expr = (Token) stack.pop();
            Token lastButOne = (Token) stack.pop();
            Token result;
            if (expr.hasType(COLON)) { // i.e. nothing was specified after the colon
                stack.pop(); // Pop the OPEN
                result = processModule(lastButOne, EMPTY_TOKEN, objectModel, context, mapStack, stackSize);
            } else if (lastButOne.hasType(COLON)) {
                Token module = (Token) stack.pop();
                stack.pop(); // Pop the OPEN
                result = processModule(module, expr, objectModel, context, mapStack, stackSize);
            } else {
                result = processVariable(expr, mapStack, stackSize);
            }
            if (stack.empty()) {
                stack.push(result);
            } else {
                last = (Token) stack.peek();
                if (last.hasType(EXPR)) {
                    last.merge(result);
                } else {
                    stack.push(result);
                }
            }
            break;
        case OPEN:
        case COLON:
        case ANCHOR_VAR:
        case THREADSAFE_MODULE:
        case STATEFUL_MODULE:
        case ROOT_SITEMAP_VARIABLE:
        default: {
            stack.push(token);
            break;
        }
        }
    }
    if (stack.size() != 1) {
        throw new PatternException("Evaluation error in expression: " + originalExpr);
    }
    return ((Token) stack.pop()).getStringValue();
}

---

From source file:io.warp10.worf.WorfInteractive.java

public String runTemplate(Properties config, String warp10Configuration) throws WorfException {
    try {//from  w w w.  j a  va  2 s  .c  o  m
        out.println("The configuration file is a template");
        WorfTemplate template = new WorfTemplate(config, warp10Configuration);

        out.println("Generating crypto keys...");
        for (String cryptoKey : template.getCryptoKeys()) {
            String keySize = template.generateCryptoKey(cryptoKey);
            if (keySize != null) {
                out.println(keySize + " bits secured key for " + cryptoKey + "  generated");
            } else {
                out.println("Unable to generate " + cryptoKey + ", template error");
            }
        }

        out.println("Crypto keys generated");

        Stack<Pair<String, String[]>> fieldsStack = template.getFieldsStack();

        if (fieldsStack.size() > 0) {
            out.println("Update configuration...");
        }

        while (!fieldsStack.isEmpty()) {
            Pair<String, String[]> templateValues = fieldsStack.peek();
            String replaceValue = null;
            // get user input
            switch (templateValues.getValue()[0]) {
            case "path":
                replaceValue = readInputPath(reader, out, templateValues.getValue()[2]);
                break;
            case "host":
                replaceValue = readHost(reader, out, templateValues.getValue()[2]);
                break;
            case "int":
                replaceValue = readInteger(reader, out, templateValues.getValue()[2]);
                break;
            }

            if (replaceValue == null) {
                out.println("Unable to update " + templateValues.getValue()[1] + " key, enter a valid "
                        + templateValues.getValue()[0]);
                continue;
            }

            // replace template value
            template.updateField(templateValues.getKey(), replaceValue);

            // field updated pop
            fieldsStack.pop();
        }

        out.println("Configuration updated.");

        // save file
        Path warp10ConfigurationPath = Paths.get(warp10Configuration);
        String outputFileName = warp10ConfigurationPath.getFileName().toString();
        outputFileName = outputFileName.replace("template", "conf");
        String outputPath = readInputPath(reader, out, "save config:output path",
                warp10ConfigurationPath.getParent().toString());
        String outputFilename = readInputString(reader, out, "save config:output filename", outputFileName);

        if (Strings.isNullOrEmpty(outputPath) || Strings.isNullOrEmpty(outputFilename)) {
            throw new Exception("Path or filename empty, unable to save configuration file!");
        }

        StringBuilder sb = new StringBuilder();
        sb.append(outputPath);
        if (!outputPath.endsWith(File.separator)) {
            sb.append(File.separator);
        }
        sb.append(outputFilename);

        warp10Configuration = sb.toString();
        template.saveConfig(warp10Configuration);

        out.println("Configuration saved. filepath=" + warp10Configuration);
        out.println("Reading warp10 configuration " + warp10Configuration);
        return warp10Configuration;
    } catch (Exception exp) {
        throw new WorfException("Unexpected Worf error:" + exp.getMessage());
    }
}

---

From source file:net.riezebos.thoth.commands.CommentCommand.java

protected Section parseSections(String body, String contextName, String fileName)
        throws ContentManagerException {
    CommentManager commentManager = getThothEnvironment().getCommentManager();
    Pattern sectionStartPattern = Pattern.compile(DETAILSTART + "(.*?)" + MARKER);
    Pattern sectionEndPattern = Pattern.compile(DETAILEND);

    Stack<Section> sections = new Stack<>();
    Section main = new Section(fileName);
    main.setComments(commentManager.getComments(contextName, fileName, null));
    sections.push(main);//from ww  w.  j av a  2  s. com

    for (String line : body.split("\n")) {
        Matcher matcher = sectionStartPattern.matcher(line);
        if (matcher.find()) {
            String path = matcher.group(1);
            Section subSection = new Section(path);
            List<Comment> comments = commentManager.getComments(contextName, path, null);
            subSection.setComments(comments);
            sections.peek().addSection(subSection);
            sections.push(subSection);
        } else if (sectionEndPattern.matcher(line).find()) {
            sections.pop();
        } else
            sections.peek().addSection(line);
    }

    return main;
}

---

From source file:com.webcohesion.ofx4j.io.tagsoup.TestTagSoupOFXReader.java

/**
 * tests using sax to parse an OFX doc./* ww  w.j  a v a2 s  .  c  o  m*/
 */
public void testVersion1() throws Exception {
    TagSoupOFXReader reader = new TagSoupOFXReader();
    final Map<String, String> headers = new HashMap<String, String>();
    final Stack<Map<String, Object>> aggregateStack = new Stack<Map<String, Object>>();
    TreeMap<String, Object> root = new TreeMap<String, Object>();
    aggregateStack.push(root);

    reader.setContentHandler(new DefaultHandler() {

        @Override
        public void onHeader(String name, String value) {
            LOG.debug(name + ":" + value);
            headers.put(name, value);
        }

        @Override
        public void onElement(String name, String value) {
            char[] tabs = new char[aggregateStack.size() * 2];
            Arrays.fill(tabs, ' ');
            LOG.debug(new String(tabs) + name + "=" + value);

            aggregateStack.peek().put(name, value);
        }

        @Override
        public void startAggregate(String aggregateName) {
            char[] tabs = new char[aggregateStack.size() * 2];
            Arrays.fill(tabs, ' ');
            LOG.debug(new String(tabs) + aggregateName + " {");

            TreeMap<String, Object> aggregate = new TreeMap<String, Object>();
            aggregateStack.peek().put(aggregateName, aggregate);
            aggregateStack.push(aggregate);
        }

        @Override
        public void endAggregate(String aggregateName) {
            aggregateStack.pop();

            char[] tabs = new char[aggregateStack.size() * 2];
            Arrays.fill(tabs, ' ');
            LOG.debug(new String(tabs) + "}");
        }
    });
    reader.parse(TestNanoXMLOFXReader.class.getResourceAsStream("example-response.ofx"));
    assertEquals(9, headers.size());
    assertEquals(1, aggregateStack.size());
    assertSame(root, aggregateStack.pop());
}

---

From source file:com.webcohesion.ofx4j.io.tagsoup.TestTagSoupOFXReader.java

/**
 * tests using sax to parse an OFX doc./*from w w  w.j av  a  2s  .c  o  m*/
 */
public void testSimpleVersion1() throws Exception {
    TagSoupOFXReader reader = new TagSoupOFXReader();
    final Map<String, String> headers = new HashMap<String, String>();
    final Stack<Map<String, Object>> aggregateStack = new Stack<Map<String, Object>>();
    TreeMap<String, Object> root = new TreeMap<String, Object>();
    aggregateStack.push(root);

    reader.setContentHandler(new DefaultHandler() {

        @Override
        public void onHeader(String name, String value) {
            LOG.debug(name + ":" + value);
            headers.put(name, value);
        }

        @Override
        public void onElement(String name, String value) {
            char[] tabs = new char[aggregateStack.size() * 2];
            Arrays.fill(tabs, ' ');
            LOG.debug(new String(tabs) + name + "=" + value);

            aggregateStack.peek().put(name, value);
        }

        @Override
        public void startAggregate(String aggregateName) {
            char[] tabs = new char[aggregateStack.size() * 2];
            Arrays.fill(tabs, ' ');
            LOG.debug(new String(tabs) + aggregateName + " {");

            TreeMap<String, Object> aggregate = new TreeMap<String, Object>();
            aggregateStack.peek().put(aggregateName, aggregate);
            aggregateStack.push(aggregate);
        }

        @Override
        public void endAggregate(String aggregateName) {
            aggregateStack.pop();

            char[] tabs = new char[aggregateStack.size() * 2];
            Arrays.fill(tabs, ' ');
            LOG.debug(new String(tabs) + "}");
        }
    });
    reader.parse(TestNanoXMLOFXReader.class.getResourceAsStream("simple.ofx"));
    assertEquals(9, headers.size());
    assertEquals(1, aggregateStack.size());
    assertSame(root, aggregateStack.pop());
}

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