Example usage for java.lang StringBuilder charAt

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:Main.java

/**
 * Creates a NMEA checksum for a sentence.
 * /* w w w  .  j ava2s .c  om*/
 * The checksum is calculated by XOR every char value, between '$' and
 * '*'(end), with the current sum.
 * 
 * @param sbString
 *            String to calculate the checksum.
 * @return The checksum.
 */
public static int getNMEAChecksum(final StringBuilder sbString) {
    int checksum = 0;

    for (int i = 0; i < sbString.length(); i++) {
        if (sbString.charAt(i) != '*' && sbString.charAt(i) != '$')
            checksum ^= sbString.charAt(i);
    }
    return checksum;
}

From source file:Main.java

public static String stripControlChars(String iString) {
    StringBuilder result = new StringBuilder(iString);
    int idx = result.length();
    while (idx-- > 0) {
        if (result.charAt(idx) < 0x20 && result.charAt(idx) != 0x9 && result.charAt(idx) != 0xA
                && result.charAt(idx) != 0xD)
            result.deleteCharAt(idx);//from  ww  w  . ja  v a  2  s. c o  m
    }
    return result.toString();
}

From source file:Main.java

/**
 * Trim trailing whitespace from the given String.
 * @param str the String to check//from www . j  av  a 2s . c  o m
 * @return the trimmed String
 * @see java.lang.Character#isWhitespace
 */
public static String trimTrailingWhitespace(String str) {
    if (!hasLength(str)) {
        return str;
    }
    StringBuilder sb = new StringBuilder(str);
    while (sb.length() > 0 && Character.isWhitespace(sb.charAt(sb.length() - 1))) {
        sb.deleteCharAt(sb.length() - 1);
    }
    return sb.toString();
}

From source file:Main.java

/**
 * Trim leading and trailing whitespace from the given String.
 * @param str the String to check/*from   w  ww  .j  av  a  2 s  .  c o  m*/
 * @return the trimmed String
 * @see java.lang.Character#isWhitespace
 */
public static String trimWhitespace(String str) {
    if (!hasLength(str)) {
        return str;
    }
    StringBuilder sb = new StringBuilder(str);
    while (sb.length() > 0 && Character.isWhitespace(sb.charAt(0))) {
        sb.deleteCharAt(0);
    }
    while (sb.length() > 0 && Character.isWhitespace(sb.charAt(sb.length() - 1))) {
        sb.deleteCharAt(sb.length() - 1);
    }
    return sb.toString();
}

From source file:Main.java

public static String removeBlanks(String content) {
    if (content == null) {
        return null;
    }/*from   w ww .  j ava 2s .c  o  m*/
    StringBuilder buff = new StringBuilder();
    buff.append(content);
    for (int i = buff.length() - 1; i >= 0; i--) {
        if (' ' == buff.charAt(i) || ('\n' == buff.charAt(i)) || ('\t' == buff.charAt(i))
                || ('\r' == buff.charAt(i))) {
            buff.deleteCharAt(i);
        }
    }
    return buff.toString();
}

From source file:Main.java

/**
 * Escapes backslashes ('\') with additional backslashes in a given String, returning a new, escaped String.
 *
 * @param value String to escape.   Cannot be null.
 * @return escaped String.  Never is null.
 *//*  ww w .  j  a v a  2 s.  co m*/
public static String escapeBackslashes(String value) {
    StringBuilder buf = new StringBuilder(value);
    for (int looper = 0; looper < buf.length(); looper++) {
        char curr = buf.charAt(looper);
        char next = 0;
        if (looper + 1 < buf.length())
            next = buf.charAt(looper + 1);

        if (curr == '\\') {
            if (next != '\\') { // only if not already escaped
                buf.insert(looper, '\\'); // escape backslash
            }
            looper++; // skip past extra backslash (either the one we added or existing)
        }
    }
    return buf.toString();
}

From source file:com.conwet.xjsp.json.JSONUtil.java

public static void discardSpaces(StringBuilder buffer) {
    while (buffer.length() > 0 && (isSpace(buffer.charAt(0)) || buffer.charAt(0) == ',')) {
        buffer.deleteCharAt(0);/*  w  ww. j av a 2 s  .c  om*/
    }
}

From source file:Main.java

private static String removeDotSegments(StringBuilder uri, int offset, int limit) {
    if (offset >= limit) {
        return uri.toString();
    }/*from  w w w  .  j  a  v  a  2s .c  o  m*/
    if (uri.charAt(offset) == '/') {
        offset++;
    }

    int segmentStart = offset;
    int i = offset;
    while (i <= limit) {
        int nextSegmentStart;
        if (i == limit) {
            nextSegmentStart = i;
        } else if (uri.charAt(i) == '/') {
            nextSegmentStart = i + 1;
        } else {
            i++;
            continue;
        }

        if (i == segmentStart + 1 && uri.charAt(segmentStart) == '.') {
            uri.delete(segmentStart, nextSegmentStart);
            limit -= nextSegmentStart - segmentStart;
            i = segmentStart;
        } else if (i == segmentStart + 2 && uri.charAt(segmentStart) == '.'
                && uri.charAt(segmentStart + 1) == '.') {
            int prevSegmentStart = uri.lastIndexOf("/", segmentStart - 2) + 2;
            int removeFrom = prevSegmentStart > offset ? prevSegmentStart : offset;
            uri.delete(removeFrom, nextSegmentStart);
            limit -= nextSegmentStart - removeFrom;
            i = prevSegmentStart;
        } else {
            i++;
            segmentStart = i;
        }
    }
    return uri.toString();
}

From source file:com.github.jknack.amd4j.ResourceURI.java

/**
 * Creates a {@link ResourceURI}./*  ww  w .  j a va  2 s. c  o  m*/
 *
 * @param baseUrl The base url.
 * @param path The dependency's path. It might be prefixed with: <code>prefix!</code> where
 *        <code>prefix</code> is usually a plugin.
 * @return A new {@link ResourceURI}.
 */
public static ResourceURI create(final String baseUrl, final String path) {
    notEmpty(baseUrl, "The baseUrl is required.");
    String normBaseUrl = baseUrl;
    if (".".equals(normBaseUrl)) {
        normBaseUrl = SEPARATOR;
    }
    if (!normBaseUrl.startsWith(SEPARATOR)) {
        normBaseUrl = SEPARATOR + normBaseUrl;
    }
    if (!normBaseUrl.endsWith(SEPARATOR)) {
        normBaseUrl += SEPARATOR;
    }
    int idx = Math.max(0, path.indexOf('!') + 1);
    StringBuilder uri = new StringBuilder(path);
    if (uri.charAt(idx) == SEPARATOR.charAt(0)) {
        uri.deleteCharAt(idx);
    }
    uri.insert(idx, normBaseUrl);
    return create(uri.toString());
}

From source file:com.jythonui.server.BUtil.java

private static String add(String path, String fName) {
    StringBuilder bu = new StringBuilder(path);
    int la = bu.length() - 1;
    char ch = bu.charAt(la);
    if (!isFSep(ch)) {
        return path + File.separator + fName;
    }/*from w  w  w.ja v a 2s .c om*/
    return path + fName;
}