Example usage for java.lang StringBuilder charAt

List of usage examples for java.lang StringBuilder charAt

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Introduction

In this page you can find the example usage for java.lang StringBuilder charAt.

Prototype

char charAt(int index);

Source Link

Document

Returns the char value at the specified index.

Usage

From source file:org.folg.names.score.DMSoundex.java

/**
 *
 * @param s must be romanized and in lower case
 * @return//  ww  w .  j  a  v a  2s.  co m
 */
public String encode(String s) {
    StringBuilder buf = new StringBuilder();
    int pos = 0;
    boolean atBegin = true;
    boolean prevSkipped = false;
    while (pos < s.length() && buf.length() < maxCodeLength) {
        boolean found = false;
        for (int len = Math.min(s.length() - pos, MAX_CODE_LEN); len > 0; len--) {
            int nextPos = pos + len;
            String token = s.substring(pos, nextPos);
            String code = null;
            if (atBegin) {
                code = startCodeMaps[len - 1].get(token);
            } else if (nextPos < s.length() && Arrays.binarySearch(VOWELS, s.charAt(nextPos)) >= 0) {
                code = beforeVowelCodeMaps[len - 1].get(token);
            } else {
                code = otherCodeMaps[len - 1].get(token);
            }
            if (code != null) {
                if (prevSkipped || code.length() != 1 || buf.length() == 0
                        || buf.charAt(buf.length() - 1) != code.charAt(0)) {
                    buf.append(code);
                }
                pos = nextPos;
                found = true;
                break;
            }
        }
        atBegin = false;
        if (found) {
            prevSkipped = false;
        } else {
            prevSkipped = true;
            pos++;
        }
    }
    if (buf.length() > maxCodeLength) {
        buf.setLength(maxCodeLength);
    }
    return buf.toString();
}

From source file:org.apache.hadoop.yarn.server.nodemanager.util.CgroupsLCEResourcesHandlerGPU.java

public String getResourcesOption(ContainerId containerId) {
    String containerName = containerId.toString();

    StringBuilder sb = new StringBuilder("cgroups=");

    if (isCpuWeightEnabled()) {
        sb.append(pathForCgroup(CONTROLLER_CPU, containerName) + "/tasks");
        sb.append(PrivilegedOperation.LINUX_FILE_PATH_SEPARATOR);
    }/*from w w  w .  j  a  va  2  s.c  o m*/

    sb.append(pathForCgroup(CONTROLLER_DEVICES, containerName) + "/tasks");
    sb.append(PrivilegedOperation.LINUX_FILE_PATH_SEPARATOR);

    if (sb.charAt(sb.length() - 1) == PrivilegedOperation.LINUX_FILE_PATH_SEPARATOR) {
        sb.deleteCharAt(sb.length() - 1);
    }

    return sb.toString();
}

From source file:de.micromata.genome.gwiki.page.impl.wiki.GWikiMacroFragment.java

public void getMacroSource(StringBuilder sb, GWikiFragment parent, GWikiFragment previous, GWikiFragment next) {
    appendPrevNlIfNeeded(sb, parent, previous, this);
    renderSourceHead(sb);//from  ww w. j  av  a 2 s . c  o  m
    if (macro.hasBody() == false) {
        if (GWikiMacroRenderFlags.NewLineAfterEnd.isSet(macro.getRenderModes()) == true) {
            sb.append("\n");
        }
        return;
    }
    if (GWikiMacroRenderFlags.NewLineAfterStart.isSet(macro.getRenderModes()) == true) {
        sb.append("\n");
    }
    if (macro.evalBody() == true) {
        if (attrs.getChildFragment() != null && attrs.getChildFragment().getChilds().size() > 0) {
            attrs.getChildFragment().getSource(sb);
        }
    } else {
        sb.append(attrs.getBody());
    }

    if (GWikiMacroRenderFlags.NewLineBeforeEnd.isSet(macro.getRenderModes()) == true) {
        if (sb.charAt(sb.length() - 1) != '\n') {
            sb.append("\n");
        }
    }
    renderSourceFoot(sb);

}

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

static void corrupt(List<File> files) throws IOException {
    for (File f : files) {
        StringBuilder content = new StringBuilder(DFSTestUtil.readFile(f));
        char c = content.charAt(0);
        content.setCharAt(0, ++c);//from w  w  w  . j  a va  2  s. c  om
        PrintWriter out = new PrintWriter(f);
        out.print(content);
        out.flush();
        out.close();
    }
}

From source file:org.apache.openjpa.jdbc.meta.ReverseMappingTool.java

/**
 * Replace characters not allowed in Java names with an underscore;
 * package-private for testing./*from  www.  ja v  a  2  s. co  m*/
 */
static String replaceInvalidCharacters(String str) {
    if (StringUtils.isEmpty(str))
        return str;

    StringBuilder buf = new StringBuilder(str);
    char c;
    for (int i = 0; i < buf.length(); i++) {
        c = buf.charAt(i);
        if (c == '$' || !Character.isJavaIdentifierPart(str.charAt(i)))
            buf.setCharAt(i, '_');
    }

    // strip leading and trailing underscores
    int start = 0;
    while (start < buf.length() && buf.charAt(start) == '_')
        start++;
    int end = buf.length() - 1;
    while (end >= 0 && buf.charAt(end) == '_')
        end--;

    // possible that all chars in name are invalid
    if (start > end)
        return "x";
    return buf.substring(start, end + 1);
}

From source file:com.github.mybatis.spring.MapperFactoryBean.java

private void evalArray(Object arr, StringBuilder sbd) {
    int sz = Array.getLength(arr);
    if (sz == 0) {
        sbd.append("[]");
        return;/* w  w w  .  ja v a 2  s.c  o  m*/
    }
    Class<?> clz = Array.get(arr, 0).getClass();
    if (clz == Byte.class) {
        sbd.append("Byte[").append(sz).append(']');
        return;
    }
    if (isPrimitive(clz)) {
        sbd.append('[');
        int len = Math.min(sz, 10);
        for (int i = 0; i < len; i++) {
            Object obj = Array.get(arr, i);
            if (isPrimitive(obj.getClass())) {
                sbd.append(evalPrimitive(obj));
            } else {
                sbd.append(obj.getClass().getSimpleName()).append(":OBJ");
            }
            sbd.append(',');
        }
        if (sz > 10) {
            sbd.append(",...,len=").append(sz);
        }
        if (sbd.charAt(sbd.length() - 1) == ',') {
            sbd.setCharAt(sbd.length() - 1, ']');
        } else {
            sbd.append(']');
        }
    } else {
        sbd.append("[len=").append(sz).append(']');
    }
}

From source file:aldenjava.opticalmapping.data.data.OptMapDataReader.java

private DataNode parseFA01() throws IOException {
    if (nextline == null)
        return null;
    String name = nextline.substring(1);
    StringBuilder zeroOneString = new StringBuilder();
    String s;/*from  w ww . jav  a2 s  .  co m*/
    while ((s = br.readLine()) != null) {
        if (s.startsWith(">")) {
            nextline = s;
            break;
        } else
            zeroOneString = zeroOneString.append(s);
    }

    if (zeroOneString.length() == 0)
        return null;
    else {
        long ref_size = zeroOneString.length();
        long zero = 0;
        List<Long> refl = new ArrayList<Long>();
        List<Long> refp = new ArrayList<Long>();
        for (long i = 0; i < ref_size; i++) {
            if (zeroOneString.charAt((int) i) == '0')
                zero++;
            else if (zeroOneString.charAt((int) i) == '1') {
                refl.add(zero);
                refp.add(i);
                zero = 0;
            }
        }
        refl.add(zero);
        return new DataNode(name, zeroOneString.length(),
                ArrayUtils.toPrimitive(refp.toArray(new Long[refp.size()])));
    }
}

From source file:barrysw19.calculon.icc.ICCInterface.java

public void connect() throws IOException {
    connection = new Socket("chessclub.com", 23);
    doLogin();/*from  w ww  .j  a v a 2  s .  com*/
    BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
    out = new PrintStream(connection.getOutputStream());

    send("set level1 1");
    send("set style 12");
    if (!StringUtils.isBlank(iccConfig.getFormula())) {
        send("set formula " + iccConfig.getFormula());
    }
    receiveLevel2(DgCommand.DG_MY_GAME_STARTED, DgCommand.DG_MY_GAME_RESULT, DgCommand.DG_SEND_MOVES,
            DgCommand.DG_MOVE_ALGEBRAIC, DgCommand.DG_MOVE_SMITH, DgCommand.DG_MOVE_TIME,
            DgCommand.DG_MOVE_CLOCK, DgCommand.DG_MSEC);

    setStatus();
    if (iccConfig.isReseek()) {
        reseek();
    }

    Runnable keepAlive = () -> {
        while (alive) {
            send("games *r-e-B-o-M-f-K-w-L-d-z");
            try {
                Thread.sleep(60000);
            } catch (InterruptedException x) {
                // Ignore
            }
        }
    };
    Thread keepAliveThread = new Thread(keepAlive);
    keepAliveThread.setDaemon(true);
    keepAliveThread.start();

    StringBuilder line = new StringBuilder();
    int c;
    try {
        while ((c = reader.read()) != -1) {
            lv1BlockHandler.add((char) c);

            // Ignore CTRL-M, CTRL-G
            if (c == ('M' & 0x1F) || c == ('G' & 0x1F)) {
                continue;
            }
            line.append((char) c);
            if (c == '\n') {
                fireDataReceived(line.toString());
                line.setLength(0);
                continue;
            }
            if (line.length() >= 2 && line.charAt(line.length() - 2) == ('Y' & 0x1F)
                    && line.charAt(line.length() - 1) == ']') {
                fireDataReceived(line.toString());
                line.setLength(0);
            }
        }
    } finally {
        alive = false;
        try {
            reader.close();
            out.close();
        } catch (Exception x) {
            // ignore
        }
    }
}

From source file:org.elasticsearch.index.analysis.phonetic.Nysiis.java

/**
 * Retrieves the NYSIIS code for a given String object.
 *
 * @param str String to encode using the NYSIIS algorithm
 * @return A NYSIIS code for the String supplied
 *//*  w w  w  .j  a  v  a 2 s .c  o m*/
public String nysiis(String str) {
    if (str == null) {
        return null;
    }

    // Use the same clean rules as Soundex
    str = clean(str);

    if (str.length() == 0) {
        return str;
    }

    // Translate first characters of name:
    // MAC -> MCC, KN -> NN, K -> C, PH | PF -> FF, SCH -> SSS
    str = PAT_MAC.matcher(str).replaceFirst("MCC");
    str = PAT_KN.matcher(str).replaceFirst("NN");
    str = PAT_K.matcher(str).replaceFirst("C");
    str = PAT_PH_PF.matcher(str).replaceFirst("FF");
    str = PAT_SCH.matcher(str).replaceFirst("SSS");

    // Translate last characters of name:
    // EE -> Y, IE -> Y, DT | RT | RD | NT | ND -> D
    str = PAT_EE_IE.matcher(str).replaceFirst("Y");
    str = PAT_DT_ETC.matcher(str).replaceFirst("D");

    // First character of key = first character of name.
    StringBuilder key = new StringBuilder(str.length());
    key.append(str.charAt(0));

    // Transcode remaining characters, incrementing by one character each time
    final char[] chars = str.toCharArray();
    final int len = chars.length;

    for (int i = 1; i < len; i++) {
        final char next = i < len - 1 ? chars[i + 1] : SPACE;
        final char aNext = i < len - 2 ? chars[i + 2] : SPACE;
        final char[] transcoded = transcodeRemaining(chars[i - 1], chars[i], next, aNext);
        System.arraycopy(transcoded, 0, chars, i, transcoded.length);

        // only append the current char to the key if it is different from the last one
        if (chars[i] != chars[i - 1]) {
            key.append(chars[i]);
        }
    }

    if (key.length() > 1) {
        char lastChar = key.charAt(key.length() - 1);

        // If last character is S, remove it.
        if (lastChar == 'S') {
            key.deleteCharAt(key.length() - 1);
            lastChar = key.charAt(key.length() - 1);
        }

        if (key.length() > 2) {
            final char last2Char = key.charAt(key.length() - 2);
            // If last characters are AY, replace with Y.
            if (last2Char == 'A' && lastChar == 'Y') {
                key.deleteCharAt(key.length() - 2);
            }
        }

        // If last character is A, remove it.
        if (lastChar == 'A') {
            key.deleteCharAt(key.length() - 1);
        }
    }

    final String string = key.toString();
    return this.isStrict() ? string.substring(0, Math.min(TRUE_LENGTH, string.length())) : string;
}

From source file:org.ambraproject.wombat.service.CommentFormatting.java

private static void linkURL(StringBuilder str, String target, int maxDisplayLength) {
    String urlToDisplay;//from w w w .jav  a2  s  .  co m

    int lastEndIndex = -1; //Stores the index position, within the whole string, of the ending char of the last URL found.

    String targetString = ((target == null) || (target.trim().length() == 0)) ? ""
            : (" target=\"" + target.trim() + '\"');

    while (true) {
        int linkStartIndex = getStartUrl(str, lastEndIndex);

        //if no more links found - then end the loop
        if (linkStartIndex == -1) {
            break;
        } else {
            //Get the whole URL...
            //We move forward and add each character to the URL string until we encounter
            //an invalid URL character (we assume that the URL ends there).
            int linkEndIndex = linkStartIndex;
            String urlStr = "";

            while (true) {
                // if char at linkEndIndex is '&' then we look at the next 4 chars
                // to see if they make up "&amp;" altogether. This is the html coded
                // '&' and will pretty much stuff up an otherwise valid link becos of the ';'.
                // We therefore have to remove it before proceeding...
                if (str.charAt(linkEndIndex) == '&') {
                    if (((linkEndIndex + 6) <= str.length())
                            && "&quot;".equals(str.substring(linkEndIndex, linkEndIndex + 6))) {
                        break;
                    } else if (((linkEndIndex + 5) <= str.length())
                            && "&amp;".equals(str.substring(linkEndIndex, linkEndIndex + 5))) {
                        str.replace(linkEndIndex, linkEndIndex + 5, "&");
                    }
                }

                if (isValidURLChar(str.charAt(linkEndIndex))) {
                    urlStr += str.charAt(linkEndIndex);
                    linkEndIndex++;

                    if (linkEndIndex == str.length()) { //Reached end of str...

                        break;
                    }
                } else {
                    break;
                }
            }

            //if the characters before the linkStart equal 'href="' then don't link the url - CORE-44
            if (linkStartIndex >= 6) { //6 = "href\"".length()

                String prefix = str.substring(linkStartIndex - 6, linkStartIndex);

                if ("href=\"".equals(prefix)) {
                    lastEndIndex = linkEndIndex;

                    continue;
                }
            }

            //if the characters after the linkEnd are '</a>' then this url is probably already linked - CORE-44
            if (str.length() >= (linkEndIndex + 4)) { //4 = "</a>".length()

                String suffix = str.substring(linkEndIndex, linkEndIndex + 4);

                if ("</a>".equals(suffix)) {
                    lastEndIndex = linkEndIndex + 4;

                    continue;
                }
            }

            //Decrement linkEndIndex back by 1 to reflect the real ending index position of the URL...
            linkEndIndex--;

            // If the last char of urlStr is a '.' we exclude it. It is most likely a full stop and
            // we don't want that to be part of an url.
            while (true) {
                char lastChar = urlStr.charAt(urlStr.length() - 1);

                if (lastChar == '.') {
                    urlStr = urlStr.substring(0, urlStr.length() - 1);
                    linkEndIndex--;
                } else {
                    break;
                }
            }

            //if the URL had a '(' before it, and has a ')' at the end, trim the last ')' from the url
            //ie '(www.opensymphony.com)' => '(<a href="http://www.openymphony.com/">www.opensymphony.com</a>)'
            char lastChar = urlStr.charAt(urlStr.length() - 1);

            if (lastChar == ')') {
                if ((linkStartIndex > 0) && ('(' == (str.charAt(linkStartIndex - 1)))) {
                    urlStr = urlStr.substring(0, urlStr.length() - 1);
                    linkEndIndex--;
                }
            } else if (lastChar == '\'') {
                if ((linkStartIndex > 0) && ('\'' == (str.charAt(linkStartIndex - 1)))) {
                    urlStr = urlStr.substring(0, urlStr.length() - 1);
                    linkEndIndex--;
                }
            }
            //perhaps we ended with '&gt;', '&lt;' or '&quot;'
            //We need to strip these
            //ie '&quot;www.opensymphony.com&quot;' => '&quot;<a href="http://www.openymphony.com/">www.opensymphony.com</a>&quot;'
            //ie '&lt;www.opensymphony.com&gt;' => '&lt;<a href="http://www.openymphony.com/">www.opensymphony.com</a>&gt;'
            else if (lastChar == ';') {
                // 6 = "&quot;".length()
                if ((urlStr.length() > 6) && "&quot;".equalsIgnoreCase(urlStr.substring(urlStr.length() - 6))) {
                    urlStr = urlStr.substring(0, urlStr.length() - 6);
                    linkEndIndex -= 6;
                }
                // 4 = "&lt;".length()  || "&gt;".length()
                else if (urlStr.length() > 4) {
                    final String endingStr = urlStr.substring(urlStr.length() - 4);

                    if ("&lt;".equalsIgnoreCase(endingStr) || "&gt;".equalsIgnoreCase(endingStr)) {
                        urlStr = urlStr.substring(0, urlStr.length() - 4);
                        linkEndIndex -= 4;
                    }
                }
            }

            // we got the URL string, now we validate it and convert it into a hyperlink...

            if (maxDisplayLength > 0 && urlStr.length() > maxDisplayLength) {
                urlToDisplay = htmlEncode(urlStr.substring(0, maxDisplayLength), true) + "...";
            } else {
                urlToDisplay = htmlEncode(urlStr, true);
            }

            if (urlStr.toLowerCase().startsWith("www.")) {
                urlStr = "http://" + urlStr;
            }

            if (verifyHierarchicalURI(urlStr, null)) {
                //Construct the hyperlink for the url...
                String urlLink = "<a rel=\"nofollow\" href=\"" + urlStr + "\"" + targetString;

                if (maxDisplayLength > 0 && urlStr.length() > maxDisplayLength) {
                    urlLink += " title=\"" + htmlEncode(urlStr, true) + "\">" + urlToDisplay + "</a>";
                } else {
                    urlLink += ">" + urlToDisplay + "</a>";
                }

                //Remove the original urlStr from str and put urlLink there instead...
                str.replace(linkStartIndex, linkEndIndex + 1, urlLink);

                //Set lastEndIndex to reflect the position of the end of urlLink
                //within the whole string...
                lastEndIndex = (linkStartIndex - 1) + urlLink.length();
            } else {
                //lastEndIndex is different from the one above cos' there's no
                //<a href...> tags added...
                lastEndIndex = (linkStartIndex - 1) + urlStr.length();
            }
        }
    }
}