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:gov.jgi.meta.sequence.SequenceStringCompress.java

/**
 * The real method to do sequenceToBytearray
 * The logic has changed.  --lanhin// w  w  w . ja v  a2s  .c  o m
 */
private static byte[] pack(String sequenceToPack) {
    int numberOfBases = sequenceToPack.length();
    int numberOfFill = (3 - numberOfBases % 3) % 3;
    int numberOfBytes = (int) Math.ceil((2 + Math.ceil((double) numberOfBases / 3) * 7) / 8);//Wish I didn't make a mistake here  --lanhin
    int numberOfBaseGroup = (numberOfBases + numberOfFill) / 3;

    byte[] bytes = new byte[numberOfBytes];
    int leftBits, position = 0;// Position index in bytes[]

    byte former, latter, current;

    String newSequence = sequenceToPack;
    //Fill by 'n'
    for (int i = 0; i < numberOfFill; i++) {
        newSequence = newSequence + 'n';
    }

    former = (byte) (((byte) numberOfFill) << 6);//Record this var in the very first two bits.
    leftBits = 6;

    try {
        for (int i = 0; i < numberOfBaseGroup; i++) {

            StringBuilder subseq = new StringBuilder(newSequence.substring(i * 3, i * 3 + 3));
            for (int si = 0; si < 3; si++) {
                char sichar = subseq.charAt(si);
                if (sichar != 'a' && sichar != 't' && sichar != 'g' && sichar != 'c' && sichar != 'n') {
                    subseq.setCharAt(si, 'n');
                }
            }
            current = hash.get(subseq.toString());
            if (leftBits == 8)
                former = (byte) (current << 1);
            else
                former = (byte) ((current >> (7 - leftBits)) | former);
            latter = (byte) (current << (1 + leftBits));
            if (leftBits <= 7) {//A new byte produced
                bytes[position++] = former;
                former = latter;
            }
            leftBits = (1 + leftBits) % 8;
            if (leftBits == 0) {
                leftBits = 8;
            }
        }
        if (leftBits < 8)//Fill the last one byte
            bytes[position++] = former;

    } catch (Exception e) {
        System.out.println("Pack Error, Please Check." + e);
    }

    // sanity check
    assert (position == numberOfBytes);

    return bytes;
}

From source file:jongo.JongoUtils.java

/**
 * Generates a string like {call stmt(?,?,?)} to be used by a CallableStatement to execute a function
 * or a procedure./*from ww w.  jav  a 2  s.  c  o m*/
 * @param queryName the name of the function or procedure
 * @param paramsSize the amount of parameters to be passed to the function/procedure
 * @return a string ready to be fed to a CallableStatement
 */
public static String getCallableStatementCallString(final String queryName, final Integer paramsSize) {
    if (StringUtils.isBlank(queryName))
        throw new IllegalArgumentException("The name can't be null, empty or blank");

    StringBuilder b = new StringBuilder("{CALL ");
    b.append(queryName);
    b.append("(");
    for (int i = 0; i < paramsSize; i++) {
        b.append("?,");
    }
    if (b.charAt(b.length() - 1) == ',') {
        b.deleteCharAt(b.length() - 1);
    }
    b.append(")}");
    return b.toString();
}

From source file:org.apache.phoenix.util.StringUtil.java

/**
 * Lame - StringBuilder.equals is retarded.
 * @param b1/*from w ww . j a  v a 2s  .  c  o m*/
 * @param b2
 * @return whether or not the two builders consist the same sequence of characters
 */
public static boolean equals(StringBuilder b1, StringBuilder b2) {
    if (b1.length() != b2.length()) {
        return false;
    }
    for (int i = 0; i < b1.length(); i++) {
        if (b1.charAt(i) != b2.charAt(i)) {
            return false;
        }
    }
    return true;
}

From source file:com.baidubce.util.HttpUtils.java

/**
 * Append the given path to the given baseUri.
 *
 * <p>//w  ww.ja  v  a 2s  . c  o  m
 * This method will encode the given path but not the given baseUri.
 *
 * @param baseUri
 * @param pathComponents
 */
public static URI appendUri(URI baseUri, String... pathComponents) {
    StringBuilder builder = new StringBuilder(baseUri.toASCIIString());
    for (String path : pathComponents) {
        if (path != null && path.length() > 0) {
            path = normalizePath(path);
            if (path.startsWith("/")) {
                if (builder.charAt(builder.length() - 1) == '/') {
                    builder.setLength(builder.length() - 1);
                }
            } else {
                if (builder.charAt(builder.length() - 1) != '/') {
                    builder.append('/');
                }
            }
            builder.append(path);
        }
    }
    try {
        return new URI(builder.toString());
    } catch (URISyntaxException e) {
        throw new RuntimeException("Unexpected error", e);
    }
}

From source file:Main.java

public static Pair<String, String> ReorderRTLTextForPebble(String source, int charLimit) {
    if (source == null || source.equals(""))
        return new Pair<>("", "");

    if (!hebrewPattern.matcher(source).find()) {
        return new Pair<>(source, "");
    } else {/* www .  jav a  2  s. c  o m*/

        StringBuilder sbResult = new StringBuilder();
        StringBuilder sbExtraResult = new StringBuilder();
        StringBuilder sbTemp = new StringBuilder();
        String[] words = source.split(" ");
        int charCount = 0;

        for (int wordIndex = 0; wordIndex < words.length; wordIndex++, sbTemp.setLength(0)) {
            sbTemp.append(words[wordIndex]);
            charCount += sbTemp.length();
            Matcher hebrewWord = hebrewPattern.matcher(words[wordIndex]);

            if (hebrewWord.find()) {
                sbTemp.reverse();
                if (sbTemp.charAt(0) == ')') {
                    sbTemp.replace(0, 1, "(");
                }
                if (sbTemp.charAt(sbTemp.length() - 1) == '(') {
                    sbTemp.replace(sbTemp.length() - 1, sbTemp.length(), ")");
                }
            }

            if (charCount <= charLimit) {
                sbResult.insert(0, sbTemp + " ");
            } else {
                sbExtraResult.insert(0, sbTemp + " ");
            }

            charCount++;
        }

        if (sbExtraResult.length() > charLimit) {
            sbExtraResult.replace(0, sbExtraResult.length() - charLimit, "...");
        }

        return new Pair<>(sbResult.toString().trim(), sbExtraResult.toString().trim());
    }
}

From source file:com.laxser.blitz.util.PlaceHolderUtils.java

public static String resolve(String text, Invocation inv) {
    if (StringUtils.isEmpty(text)) {
        return text;
    }//from   ww  w.  j av a  2  s  .c o  m
    int startIndex = text.indexOf(PLACEHOLDER_PREFIX);
    if (startIndex == -1) {
        return text;
    }
    StringBuilder buf = new StringBuilder(text);
    while (startIndex != -1) {
        int endIndex = buf.indexOf(PLACEHOLDER_SUFFIX, startIndex + PLACEHOLDER_PREFIX.length());
        if (endIndex != -1) {
            String placeholder = null;
            String defaultValue = null;
            for (int i = startIndex + PLACEHOLDER_PREFIX.length(); i < endIndex; i++) {
                if (buf.charAt(i) == '?') {
                    placeholder = buf.substring(startIndex + PLACEHOLDER_PREFIX.length(), i);
                    defaultValue = buf.substring(i + 1, endIndex);
                    break;
                }
            }
            if (placeholder == null) {
                placeholder = buf.substring(startIndex + PLACEHOLDER_PREFIX.length(), endIndex);
            }
            int nextIndex = endIndex + PLACEHOLDER_SUFFIX.length();
            try {
                int dot = placeholder.indexOf('.');
                String attributeName = dot == -1 ? placeholder : placeholder.substring(0, dot);
                String propertyPath = dot == -1 ? "" : placeholder.substring(dot + 1);
                Object propVal = inv.getModel().get(attributeName);
                if (propVal != null) {
                    if (propertyPath.length() > 0) {
                        propVal = new BeanWrapperImpl(propVal).getPropertyValue(propertyPath);
                    }
                } else {
                    if ("flash".equals(attributeName)) {
                        propVal = inv.getFlash().get(propertyPath);
                    } else {
                        propVal = inv.getParameter(placeholder);
                    }
                }
                //
                if (propVal == null) {
                    propVal = defaultValue;
                }
                if (propVal == null) {
                    if (logger.isWarnEnabled()) {
                        logger.warn("Could not resolve placeholder '" + placeholder + "' in [" + text + "].");
                    }
                } else {
                    String toString = propVal.toString();
                    buf.replace(startIndex, endIndex + PLACEHOLDER_SUFFIX.length(), toString);
                    nextIndex = startIndex + toString.length();
                }
            } catch (Throwable ex) {
                logger.warn("Could not resolve placeholder '" + placeholder + "' in [" + text + "] : " + ex);
            }
            startIndex = buf.indexOf(PLACEHOLDER_PREFIX, nextIndex);
        } else {
            startIndex = -1;
        }
    }

    return buf.toString();
}

From source file:com.yunmel.syncretic.utils.commons.StrUtils.java

/**
 * ?//w  ww.ja  v  a  2  s  .  c  o m
 */
public static String camelhumpToUnderline(String str) {
    final int size;
    final char[] chars;
    final StringBuilder sb = new StringBuilder((size = (chars = str.toCharArray()).length) * 3 / 2 + 1);
    char c;
    for (int i = 0; i < size; i++) {
        c = chars[i];
        if (isLowercaseAlpha(c)) {
            sb.append(toUpperAscii(c));
        } else {
            sb.append('_').append(c);
        }
    }
    return sb.charAt(0) == '_' ? sb.substring(1) : sb.toString();
}

From source file:com.github.dryangkun.hbase.tidx.hive.HBaseSerDeHelper.java

/**
 * Trims by removing the trailing "," if any
 * /*from  w w  w.  j  av a2 s.co  m*/
 * @param sb StringBuilder to trim
 * @return StringBuilder trimmed StringBuilder
 * */
private static StringBuilder trim(StringBuilder sb) {
    if (sb.charAt(sb.length() - 1) == StringUtils.COMMA) {
        return sb.deleteCharAt(sb.length() - 1);
    }

    return sb;
}

From source file:info.magnolia.cms.security.SecurityUtil.java

public static String byteArrayToHex(byte[] raw) {
    if (raw == null) {
        return null;
    }/*from ww w  .j  a  va 2  s  .c om*/
    final StringBuilder hex = new StringBuilder(2 * raw.length);
    for (final byte b : raw) {
        hex.append(HEX.charAt((b & 0xF0) >> 4)).append(HEX.charAt((b & 0x0F)));
    }
    return hex.toString();
}

From source file:org.commonjava.maven.galley.util.UrlUtils.java

public static String buildUrl(final String baseUrl, final Map<String, String> params, final String... parts)
        throws MalformedURLException {
    if (parts == null || parts.length < 1) {
        return baseUrl;
    }/*from   w w  w . j  a va 2 s  .  c om*/

    final StringBuilder urlBuilder = new StringBuilder();

    if (parts[0] == null || !parts[0].startsWith(baseUrl)) {
        urlBuilder.append(baseUrl);
    }

    for (String part : parts) {
        if (part == null || part.trim().length() < 1) {
            continue;
        }

        if (part.startsWith("/")) {
            part = part.substring(1);
        }

        if (urlBuilder.length() > 0 && urlBuilder.charAt(urlBuilder.length() - 1) != '/') {
            urlBuilder.append("/");
        }

        urlBuilder.append(part);
    }

    if (params != null && !params.isEmpty()) {
        urlBuilder.append("?");
        boolean first = true;
        for (final Map.Entry<String, String> param : params.entrySet()) {
            if (first) {
                first = false;
            } else {
                urlBuilder.append("&");
            }

            urlBuilder.append(param.getKey()).append("=").append(param.getValue());
        }
    }

    return new URL(urlBuilder.toString()).toExternalForm();
}