Example usage for java.util Stack empty

Introduction

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

Prototype

public boolean empty() 

Source Link

Document

Tests if this stack is empty.

Usage

From source file:cf.adriantodt.utils.HTML2Discord.java

public static String toPlainText(String discordFormatMessage) {
    String strippedContent;//from  w  w  w  . java 2  s .  com
    //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(discordFormatMessage);
        while (matcher.find()) {
            tokens.add(new FormatToken(key, matcher.start()));
        }
    }

    //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(discordFormatMessage.substring(currIndex, formatToken.start));
        }
        currIndex = formatToken.start + formatToken.format.length();
    }
    if (currIndex < discordFormatMessage.length()) {
        out.append(discordFormatMessage.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;
}

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From source file:org.orbisgis.framework.Main.java

private static void parseCommandLine(String[] args) {
    //Read parameters
    Stack<String> sargs = new Stack<String>();
    for (String arg : args) {
        sargs.insertElementAt(arg, 0);//from   w ww  .ja v a 2 s.c  o m
    }
    while (!sargs.empty()) {
        String argument = sargs.pop();
        if (argument.contentEquals("--debug")) {
            debugMode = true;
        } else if (argument.contentEquals("--nofailmode")) {
            noFailMode = true;
        }
    }
}

---

From source file:Main.java

public static void replaceFragment(FragmentManager fragmentManager, int frameId, Fragment fragmentToShow,
        String fragmentTag, Stack<Fragment> fragmentStack) {
    if (fragmentToShow == null) {
        return;/*from  w  w w. j  av a2 s .c  o  m*/
    }

    List<Fragment> fragmentList = fragmentManager.getFragments();
    for (Fragment fragment : fragmentList) {
        if (fragment == null) {
            continue;
        }
        fragmentManager.beginTransaction().remove(fragment).commit();

        if (!fragmentStack.empty()) {
            fragmentStack.pop();
        }
    }

    fragmentManager.beginTransaction().add(frameId, fragmentToShow, fragmentTag).commit();

    fragmentStack.push(fragmentToShow);
}

---

From source file:Main.java

public static String getColumnId(int column) {
    Stack<Character> digits = new Stack<Character>();
    int dividant = column;
    while (dividant > 26) {
        int remain = dividant % 26;
        dividant = dividant / 26;//from   w  w w. j a v  a  2  s.  c o m
        if (remain == 0) {
            remain = 26;
            dividant--;
        }
        digits.push((char) ('A' + remain - 1));
    }
    digits.push((char) ('A' + dividant - 1));
    StringBuffer buffer = new StringBuffer();
    while (!digits.empty()) {
        buffer.append(digits.pop());
    }
    String columnId = buffer.toString();
    return columnId;
}

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From source file:org.onosproject.yangutils.utils.io.impl.YangIoUtils.java

/**
 * Searches and deletes generated temporary directories.
 *
 * @param root root directory//from w  ww  .jav a2  s .  co m
 * @throws IOException when fails to do IO operations.
 */
public static void searchAndDeleteTempDir(String root) throws IOException {
    List<File> store = new LinkedList<>();
    Stack<String> stack = new Stack<>();
    stack.push(root);

    while (!stack.empty()) {
        root = stack.pop();
        File file = new File(root);
        File[] filelist = file.listFiles();
        if (filelist == null || filelist.length == 0) {
            continue;
        }
        for (File current : filelist) {
            if (current.isDirectory()) {
                stack.push(current.toString());
                if (current.getName().endsWith("-Temp")) {
                    store.add(current);
                }
            }
        }
    }

    for (File dir : store) {
        FileUtils.deleteDirectory(dir);
    }
}

---

From source file:opennlp.tools.parse_thicket.kernel_interface.BracesProcessor.java

public static boolean isParenthesisMatch(String str) {
    Stack<Character> stack = new Stack<Character>();

    char c;/*  w ww  .ja v  a  2  s .c  om*/
    for (int i = 0; i < str.length(); i++) {
        c = str.charAt(i);

        if (c == '{')
            return false;

        if (c == '(')
            stack.push(c);

        if (c == '{') {
            stack.push(c);
            if (c == '}')
                if (stack.empty())
                    return false;
                else if (stack.peek() == '{')
                    stack.pop();
        } else if (c == ')')
            if (stack.empty())
                return false;
            else if (stack.peek() == '(')
                stack.pop();
            else
                return false;
    }
    return stack.empty();
}

---

From source file:de.mpg.escidoc.services.citationmanager.utils.XsltHelper.java

/**
 * Check of the balanced tags sup/sub//from   ww  w  .  j  a v  a2s.  c  o m
 * @param snippet
 * @return <code>true</code> if balanced, <code>false</code> otherwise 
 */
public static boolean isBalanced(String snippet) {
    if (snippet == null)
        return true; //????

    Stack<String> s = new Stack<String>();
    Matcher m = SUBS_OR_SUPS.matcher(snippet);
    while (m.find()) {
        String tag = m.group(1);
        if (tag.toLowerCase().startsWith("su")) {
            s.push(tag);
        } else {
            if (s.empty() || !tag.equals("/" + s.pop())) {
                return false;
            }
        }
    }

    return s.empty();
}

---

From source file:org.onosproject.yang.compiler.utils.io.impl.YangIoUtils.java

/**
 * Searches and deletes generated temporary directories.
 *
 * @param root root directory//from w w  w . j  a v a  2s. c  o  m
 * @throws IOException when fails to do IO operations.
 */
public static void searchAndDeleteTempDir(String root) throws IOException {
    List<File> store = new LinkedList<>();
    Stack<String> stack = new Stack<>();
    stack.push(root);

    while (!stack.empty()) {
        root = stack.pop();
        File file = new File(root);
        File[] fileList = file.listFiles();
        if (fileList == null || fileList.length == 0) {
            continue;
        }
        for (File current : fileList) {
            if (current.isDirectory()) {
                stack.push(current.toString());
                if (current.getName().endsWith(HYPHEN + TEMP)) {
                    store.add(current);
                }
            }
        }
    }

    for (File dir : store) {
        FileUtils.deleteDirectory(dir);
    }
}

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From source file:org.apache.hadoop.hdfs.TestDFSStripedOutputStreamWithFailure.java

private static void getComb(int n, int k, Stack<Integer> stack, List<List<Integer>> res) {
    if (stack.size() == k) {
        List<Integer> list = new ArrayList<Integer>(stack);
        res.add(list);/*from w  w  w . j  a  v a 2  s.c o  m*/
    } else {
        int next = stack.empty() ? 0 : stack.peek() + 1;
        while (next < n) {
            stack.push(next);
            getComb(n, k, stack, res);
            next++;
        }
    }
    if (!stack.empty()) {
        stack.pop();
    }
}

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From source file:org.onehippo.forge.channelmanager.pagesupport.channel.event.DocumentCopyingPageCopyEventListener.java

private static <T> List<T> popAllToList(final Stack<T> stack) {
    if (stack == null) {
        return Collections.emptyList();
    }//from  w w  w  .  j  a va2  s.c o m

    List<T> list = new LinkedList<>();
    T object;

    while (!stack.empty()) {
        object = stack.pop();
        list.add(object);
    }

    return list;
}

---

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