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:com.conwet.xjsp.json.JSONUtil.java

/**
 * Extracts from the buffer a whole stanza or an stream finalizer "]}".
 * The recognized text is removed from the buffer.
 * /*from  ww w  .  java2  s . co m*/
 * Stanza recognition is implemented as a FSM. States:
 * <ul>
 *      <li>0. starting</li>
 *      <li>1. accepting text</li>
 *      <li>2. within an string</li>
 *      <li>3. finalizer</li>
 * </ul>
 * 
 * <img src="../../../../../resources/fsm.png"/>
 * 
 * @return Recognized text or <code>null</code>
 */
public static String extractStanza(StringBuilder buffer) throws ParseException {
    discardSpaces(buffer);

    int state = 0;
    int pos = 0;
    int level = 1;

    while (pos < buffer.length()) {
        char c = buffer.charAt(pos);
        switch (state) {
        case 0:
            switch (c) {
            case '{':
                state = 1;
                break;
            case ']':
                state = 3;
                break;
            default:
                throw new ParseException(ParseException.ERROR_UNEXPECTED_CHAR);
            }
            break;

        case 1:
            switch (c) {
            case '{':
                level++;
                break;
            case '}':
                level--;
                if (level == 0) {
                    String stanza = buffer.substring(0, pos + 1);
                    buffer.replace(0, pos + 1, "");
                    return stanza;
                }
                break;

            case '"':
                state = 2;
                break;

            default:
                // nothing
            }
            break;

        case 2:
            switch (c) {
            case '\\':
                pos++;
                break;

            case '"':
                state = 1;
                break;

            default:
                // nothing
            }
            break;

        case 3:
            if (isSpace(c)) {
                pos++;
            } else if (c == '}') {
                buffer.replace(0, pos + 1, "");
                return "]}";
            }

        default:
            throw new IllegalStateException();
        }
        pos++;
    }

    return null;
}

---

From source file:com.indoqa.lang.util.StringUtils.java

public static String sanitzeHtmlId(String id) {
    if (org.apache.commons.lang3.StringUtils.isBlank(id)) {
        return "";
    }//www. j a  v a  2  s  .  c om

    StringBuilder stringBuilder = new StringBuilder(id);

    for (int i = 0; i < stringBuilder.length(); i++) {
        char character = stringBuilder.charAt(i);

        if (Arrays.binarySearch(ILLEGAL_HTML_ID_CHARACTERS, character) >= 0) {
            stringBuilder.setCharAt(i, '_');
        }
    }

    return stringBuilder.toString();
}

---

From source file:gov.jgi.meta.sequence.SequenceString.java

private static byte[] pack(String sequenceToPack) {
    int numberOfBases = sequenceToPack.length();
    int numberOfFullBytes = numberOfBases / 3;
    int overflow = (numberOfBases % 3 == 0 ? 0 : 1);
    int numberOfBytes = numberOfFullBytes + overflow;

    byte[] bytes = new byte[numberOfBytes];

    int i = 0;/* www.j a va  2s. c  o  m*/

    try {
        for (i = 0; i < numberOfFullBytes; i++) {

            StringBuilder subseq = new StringBuilder(sequenceToPack.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');
                }
            }
            bytes[i] = hash.get(subseq.toString());

        }
    } catch (Exception e) {
        System.out.println("i = " + i);
    }

    if (overflow > 0) {
        StringBuilder subseq = new StringBuilder(sequenceToPack.substring(i * 3, i * 3 + numberOfBases % 3));
        for (int si = 0; si < numberOfBases % 3; si++) {
            char sichar = subseq.charAt(si);
            if (sichar != 'a' && sichar != 't' && sichar != 'g' && sichar != 'c' && sichar != 'n') {
                subseq.setCharAt(si, 'n');
            }
        }
        bytes[i++] = hash.get(subseq.toString());
    }

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

    return bytes;
}

---

From source file:Main.java

/**
 * Returns the ASCII characters up to but not including the next "\r\n", or
 * "\n".//from  ww w . j  a  va2 s . c  o m
 *
 * @throws java.io.EOFException if the stream is exhausted before the next newline
 * character.
 */
public static String readAsciiLine(InputStream in) throws IOException {
    // TODO: support UTF-8 here instead
    StringBuilder result = new StringBuilder(80);
    while (true) {
        int c = in.read();
        if (c == -1) {
            throw new EOFException();
        } else if (c == '\n') {
            break;
        }

        result.append((char) c);
    }
    int length = result.length();
    if (length > 0 && result.charAt(length - 1) == '\r') {
        result.setLength(length - 1);
    }
    return result.toString();
}

---

From source file:com.symphony.jirabot.clients.QuandlClient.java

private static String mapToQueryString(HashMap<String, Object> parameters) {
    if (parameters == null || parameters.size() == 0) {
        return "";
    }/*from  ww  w .jav a2  s . c  o m*/

    StringBuilder queryString = new StringBuilder("&");
    for (String key : parameters.keySet()) {
        queryString.append(urlEncodeUTF8(key));
        queryString.append("=");
        queryString.append(urlEncodeUTF8(parameters.get(key).toString()));
        queryString.append("&");
    }

    if (queryString.charAt(queryString.length() - 1) == '&') {
        queryString = queryString.deleteCharAt(queryString.length() - 1);
    }

    return queryString.toString();
}

---

From source file:Main.java

/**
 * Removes dot segments from the path of a URI.
 *
 * @param uri A {@link StringBuilder} containing the URI.
 * @param offset The index of the start of the path in {@code uri}.
 * @param limit The limit (exclusive) of the path in {@code uri}.
 *///from ww  w.ja v a  2s . co  m
private static String removeDotSegments(StringBuilder uri, int offset, int limit) {
    if (offset >= limit) {
        // Nothing to do.
        return uri.toString();
    }
    if (uri.charAt(offset) == '/') {
        // If the path starts with a /, always retain it.
        offset++;
    }
    // The first character of the current path segment.
    int segmentStart = offset;
    int i = offset;
    while (i <= limit) {
        int nextSegmentStart = -1;
        if (i == limit) {
            nextSegmentStart = i;
        } else if (uri.charAt(i) == '/') {
            nextSegmentStart = i + 1;
        } else {
            i++;
            continue;
        }
        // We've encountered the end of a segment or the end of the path. If the final segment was
        // "." or "..", remove the appropriate segments of the path.
        if (i == segmentStart + 1 && uri.charAt(segmentStart) == '.') {
            // Given "abc/def/./ghi", remove "./" to get "abc/def/ghi".
            uri.delete(segmentStart, nextSegmentStart);
            limit -= nextSegmentStart - segmentStart;
            i = segmentStart;
        } else if (i == segmentStart + 2 && uri.charAt(segmentStart) == '.'
                && uri.charAt(segmentStart + 1) == '.') {
            // Given "abc/def/../ghi", remove "def/../" to get "abc/ghi".
            int prevSegmentStart = uri.lastIndexOf("/", segmentStart - 2) + 1;
            int removeFrom = prevSegmentStart > offset ? prevSegmentStart : offset;
            uri.delete(removeFrom, nextSegmentStart);
            limit -= nextSegmentStart - removeFrom;
            segmentStart = prevSegmentStart;
            i = prevSegmentStart;
        } else {
            i++;
            segmentStart = i;
        }
    }
    return uri.toString();
}

---

From source file:com.indoqa.lang.util.URLStringUtils.java

public static StringBuilder cleanMultipleChar(StringBuilder text, char doubleCh) {
    if (text == null) {
        return null;
    }/*from ww w .j a  v  a 2 s .c o m*/

    StringBuilder result = new StringBuilder();

    char previousChar = 0;
    for (int i = 0; i < text.length(); i++) {
        char currentChar = text.charAt(i);

        if (previousChar == doubleCh && previousChar == currentChar) {
            previousChar = currentChar;
            continue;
        }

        previousChar = currentChar;
        result.append(currentChar);
    }

    return result;
}

---

From source file:org.apache.karaf.tooling.RunMojo.java

/**
 * Return a path for an artifact:/*ww w  .j  av a 2s .c  o  m*/
 * - if the input is already a path (doesn't contain ':'), the same path is returned.
 * - if the input is a Maven URL, the input is converted to a default repository location path, type and classifier
 *   are optional.
 *
 * @param name artifact data
 * @return path as supplied or a default Maven repository path
 */
private static String fromMaven(String name) {
    Matcher m = mvnPattern.matcher(name);
    if (!m.matches()) {
        return name;
    }

    StringBuilder b = new StringBuilder();
    b.append(m.group(1));
    for (int i = 0; i < b.length(); i++) {
        if (b.charAt(i) == '.') {
            b.setCharAt(i, '/');
        }
    }
    b.append("/"); // groupId
    String artifactId = m.group(2);
    String version = m.group(3);
    String extension = m.group(5);
    String classifier = m.group(7);
    b.append(artifactId).append("/"); // artifactId
    b.append(version).append("/"); // version
    b.append(artifactId).append("-").append(version);
    if (present(classifier)) {
        b.append("-").append(classifier);
    }
    if (present(classifier)) {
        b.append(".").append(extension);
    } else {
        b.append(".jar");
    }
    return b.toString();
}

---

From source file:com.yahoo.sql4d.sql4ddriver.Util.java

public static String capitalize(String word) {
    StringBuilder buff = new StringBuilder(word);
    if (word.charAt(0) != '_') {
        buff.setCharAt(0, Character.toUpperCase(word.charAt(0)));
    }//from  w  ww. j  av a  2s.co  m
    for (int i = 1; i < buff.length(); i++) {
        if (buff.charAt(i - 1) == '_') {
            buff.setCharAt(i, Character.toUpperCase(word.charAt(i)));
        }
    }
    return buff.toString().replace("_", "");
}

---

From source file:com.fluidops.iwb.ui.configuration.WikiWidgetConfigurationForm.java

/**
 * Searches for the end of a widget configuration in a string having a
 * string and the start index of the widget configuration. Returns -1 if
 * nothing found/*w  ww.  j a v a  2s.c om*/
 * 
 * @param searchString
 * @param widgetStart
 */
private static int findWidgetConfigurationEnd(String searchString, int widgetStart) {

    if (widgetStart < 0 || widgetStart > searchString.length())
        return -1;

    StringBuilder sb = new StringBuilder(searchString.substring(widgetStart));

    int numberOfBrackets = 0;

    for (int i = 0; i < sb.length(); i++) {
        if (sb.charAt(i) == '{') {
            numberOfBrackets++;
        } else if (sb.charAt(i) == '}') {
            numberOfBrackets--;
        }

        if (numberOfBrackets == 0) {
            return widgetStart + i + 1;
        }
    }
    return -1;
}

---

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