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:net.jofm.format.Format.java

private String trimRightPad(String data) {
    if (data == null || data.length() == 0) {
        return data;
    }/*from   w  w w.  j  av  a  2s.  c o  m*/
    StringBuilder builder = new StringBuilder(data);
    while (builder.length() > 0 && builder.charAt(builder.length() - 1) == padWith) {
        builder.deleteCharAt(builder.length() - 1);
    }
    return builder.toString();
}

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From source file:com.aiblockchain.api.StringUtils.java

/**
 * Ensures that the given string builder has two newline characters at the end of its buffer.
 *
 * @param stringBuilder the given string builder
 *///from www. j a  v a2  s .  c  om
public static void ensureTwoNewLines(final StringBuilder stringBuilder) {
    //Preconditions
    assert stringBuilder != null : "stringBuilder must not be null";

    final int length = stringBuilder.length();
    if (length == 0) {
        stringBuilder.append('\n');
        stringBuilder.append('\n');
        return;
    }
    final char ch1 = stringBuilder.charAt(length - 1);
    if (length == 1) {
        stringBuilder.append('\n');
        if (ch1 == '\n') {
            return;
        } else {
            stringBuilder.append('\n');
            return;
        }
    }
    final char ch2 = stringBuilder.charAt(length - 2);
    if (ch1 == '\n') {
        if (ch2 == '\n') {
            return;
        } else {
            stringBuilder.append('\n');
            return;
        }
    } else {
        stringBuilder.append('\n');
        stringBuilder.append('\n');
        return;
    }
}

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From source file:com.untangle.app.web_filter.WebFilterDecisionEngine.java

/**
 * Encode a URL/*from www .jav a  2  s.  co m*/
 * 
 * @param domain
 *        The domain
 * @param uri
 *        The URI
 * @return The encoded URL
 */
private static String encodeUrl(String domain, String uri) {
    // Remote trailing dots from domain
    Matcher matcher = trailingDotsPattern.matcher(domain);
    domain = matcher.replaceAll("");

    String url = domain + uri;

    // Remote trailing dots or slashes from URL
    matcher = trailingDotsSlashesPattern.matcher(url);
    url = matcher.replaceAll("");

    StringBuilder qBuilder = new StringBuilder(url);

    int i;
    int lastDot = 0;

    for (i = 0; i < qBuilder.length(); i++) {

        int numCharsAfterThisOne = (qBuilder.length() - i) - 1;

        // Must insert a null escape to divide long spans
        if (i > lastDot + 59) {
            qBuilder.insert(i, "_-0.");
            lastDot = i + 3;
            i += 4;
        }

        if (qBuilder.charAt(i) == '.') {
            lastDot = i;
        }
        // Take care of the rare, but possible case of _- being in the string
        else if (qBuilder.charAt(i) == '_' && numCharsAfterThisOne >= 1 && qBuilder.charAt(i + 1) == '-') {
            qBuilder.replace(i, i + 2, "_-_-");
            i += 4;
        }
        // Convert / to rfc compliant characters _-.
        else if (qBuilder.charAt(i) == '/') {
            qBuilder.replace(i, i + 1, "_-.");
            lastDot = i + 2;
            i += 3;
        }
        // Convert any dots next to each other
        else if (qBuilder.charAt(i) == '.' && numCharsAfterThisOne >= 1 && qBuilder.charAt(i + 1) == '.') {
            qBuilder.replace(i, i + 2, "._-2e");
            i += 5;
        }
        // Convert any dots at the end. (these should have already been stripped but the zvelo implementation has this here)
        else if (qBuilder.charAt(i) == '.' && numCharsAfterThisOne == 0) {
            qBuilder.replace(i, i + 1, "_-2e");
            i += 4;
        }
        // Convert : to _--
        else if (qBuilder.charAt(i) == ':') {
            qBuilder.replace(i, i + 1, "_--");
            i += 3;
        }
        // Drop everything after ? or #
        else if (qBuilder.charAt(i) == '?' || qBuilder.charAt(i) == '#') {
            qBuilder.delete(i, qBuilder.length());
            break;
        }
        // Convert %HEXHEX to encoded form
        else if (qBuilder.charAt(i) == '%' && numCharsAfterThisOne >= 2 && _isHex(qBuilder.charAt(i + 1))
                && _isHex(qBuilder.charAt(i + 2))) {
            //String hexString = new String(new char[] {qBuilder.charAt(i+1), qBuilder.charAt(i+2)});
            //char c = (char)( Integer.parseInt( hexString , 16) );
            //System.out.println("HEX: \"" + hexString +"\" -> \"" + Character.toString(c) + "\"");
            qBuilder.replace(i, i + 1, "_-");
            i += 4; // 2 for length of replacement + 2 for the hex characters
        }
        // Convert % charaters to encoded form
        else if (qBuilder.charAt(i) == '%') {
            qBuilder.replace(i, i + 1, "_-25");
            i += 4;
        }
        // Convert any remaining non-RFC characters.
        else if (!_isRfc(qBuilder.charAt(i))) {
            String replaceStr = String.format("_-%02X", ((byte) qBuilder.charAt(i)));
            qBuilder.replace(i, i + 1, replaceStr);
            i += 4;
        }
    }

    return qBuilder.toString();
}

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From source file:com.cheusov.Jrep.java

private static String getOutputString(String line, JrepMatchResult match) {
    if (opt_O == null)
        return line.substring(match.start(), match.end());

    StringBuilder b = new StringBuilder();
    int len = opt_O.length();
    for (int i = 0; i < len; ++i) {
        char c = opt_O.charAt(i);
        if (c != '$') {
            b.append(c);/*from www . ja v  a 2  s  . co m*/
        } else {
            if (i + 1 == len)
                throw new IllegalArgumentException("Unexpected `$` in -O argument: `" + opt_O + "`");
            char nc = opt_O.charAt(i + 1);
            if (nc == '$')
                b.append('$');
            else if (nc == '{') {
                StringBuilder[] ld;
                i += 1;
                ld = extractCurlyBraces(opt_O, i + 1);
                StringBuilder l = ld[0];
                StringBuilder d = ld[1];
                int sumlen = d.length() + l.length();
                i += sumlen; // +1 due to '}'
                int groupNum = Integer.valueOf(d.toString());

                String group = match.group(groupNum);
                if (group == null)
                    group = "";

                for (int j = 0; j < l.length(); ++j) {
                    char lc = l.charAt(j);
                    switch (lc) {
                    case 'n':
                        group = group.replaceAll("\\\\", "\\\\\\\\").replaceAll("\n", "\\\\n");
                        break;
                    case 'N':
                        group = group.replaceAll("\n", " ");
                        break;
                    case 's':
                        group = group.replaceAll("\\s+", " ");
                        break;
                    case 't':
                        group = group.trim();
                        break;
                    }
                }
                b.append(group);
            } else if (nc >= '0' && nc <= '9') {
                String group = match.group(nc - '0');
                if (group == null)
                    group = "";

                b.append(group);
            } else {
                throw new IllegalArgumentException("Illegal `$" + nc + "` in -O argument: `" + opt_O + "`");
            }

            ++i;
        }
    }

    return b.toString();
}

---

From source file:com.flexive.shared.XPathElement.java

/**
 * Build an XPath from the given elements
 *
 * @param leadingSlash prepend a leading slash character?
 * @param elements     elements that build the XPath
 * @return XPath/*from www  .j a va  2 s.  co m*/
 */
public static String buildXPath(boolean leadingSlash, String... elements) {
    StringBuilder XPath = new StringBuilder(100);
    for (String element : elements) {
        if (element == null)
            continue;
        XPath.append('/');
        if (element.length() > 0 && element.charAt(0) == '/')
            XPath.append(element.substring(1));
        else
            XPath.append(element);
        if (XPath.length() > 1 && XPath.charAt(XPath.length() - 1) == '/')
            XPath.deleteCharAt(XPath.length() - 1);
    }
    if (XPath.length() > 0) {
        if (XPath.charAt(0) == '/' && !leadingSlash)
            XPath.deleteCharAt(0);
    } else if (XPath.length() == 0 && leadingSlash)
        XPath.append('/');
    return xpToUpperCase(doubleSlashPattern.matcher(XPath).replaceAll("/"));
}

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From source file:net.jforum.util.JForumConfig.java

private void normalizeTemplateDirectory() {
    StringBuilder sb = new StringBuilder(getValue(ConfigKeys.TEMPLATE_DIRECTORY));

    if (sb.charAt(0) != '/') {
        sb.insert(0, '/');
    }/*from w  ww.  j  a  v a 2 s  .c o m*/

    if (sb.charAt(sb.length() - 1) != '/') {
        sb.append('/');
    }

    setProperty(ConfigKeys.TEMPLATE_DIRECTORY, sb.toString());
}

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From source file:com.rabbitframework.commons.utils.StringUtils.java

/**
 * _,-,@,$,#,' ',/,&?// w ww  . j  a  v a 2  s .  co  m
 * <p/>
 * :hello_world ?helloWorld
 *
 * @param inputString
 * @param firstCharacterUppercase
 *            ??
 * @return
 */
public static String toCamelCase(String inputString, boolean firstCharacterUppercase) {
    StringBuilder sb = new StringBuilder();
    boolean nextUpperCase = false;
    for (int i = 0; i < inputString.length(); i++) {
        char c = inputString.charAt(i);
        switch (c) {
        case '_':
        case '-':
        case '@':
        case '$':
        case '#':
        case ' ':
        case '/':
        case '&':
            if (sb.length() > 0) {
                nextUpperCase = true;
            }
            break;
        default:
            if (nextUpperCase) {
                sb.append(Character.toUpperCase(c));
                nextUpperCase = false;
            } else {
                sb.append(Character.toLowerCase(c));
            }
            break;
        }
    }

    if (firstCharacterUppercase) {
        sb.setCharAt(0, Character.toUpperCase(sb.charAt(0)));
    }

    return sb.toString();
}

---

From source file:org.glite.lb.NotifParser.java

/**
 * this method creates an XML document out of a provided String
 * note that the string has to be a valid escaped XML document representation,
 * otherwise the process will fail//ww  w.j  a  v a2s.c  om
 *
 * @param body a String containing an XML document
 * @return an XML document in the Document format
 * @throws javax.xml.parsers.ParserConfigurationException
 * @throws org.xml.sax.SAXException
 * @throws java.io.IOException
 */
private Document createXML(String body) throws ParserConfigurationException, SAXException, IOException {
    String removed = body.substring(0, body.length() - 1);
    String parsed = StringEscapeUtils.unescapeXml(removed);
    //this code removes hexadecimal references from the string (couldn't find
    //a suitable parser for this)
    StringBuilder build = new StringBuilder(parsed);
    int j = build.indexOf("%");
    while (j > 0) {
        if (build.charAt(j - 1) == '>') {
            build.delete(j, j + 3);
            if (build.charAt(j) == '<') {
                j = build.indexOf("%");
            }
        } else {
            j = build.indexOf("%", j + 1);
        }
    }
    parsed = build.toString();
    //ends here
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    return factory.newDocumentBuilder().parse(new InputSource(new StringReader(parsed)));
}

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From source file:net.sourceforge.fenixedu.domain.candidacyProcess.erasmus.TypeOfProgrammeList.java

private String convertToString(Set<TypeOfProgramme> types) {
    final StringBuilder result = new StringBuilder();

    for (TypeOfProgramme each : types) {
        result.append(each.name()).append(",");
    }//w  w w  .j a v  a 2s  .c o  m

    if (result.length() > 0 && result.charAt(result.length() - 1) == ',') {
        result.deleteCharAt(result.length() - 1);
    }

    return result.toString();
}

---

From source file:net.sourceforge.fenixedu.domain.phd.PhdElementsList.java

private String convertToString(Set<T> types) {
    final StringBuilder result = new StringBuilder();

    for (T each : types) {
        result.append(convertElementToString(each)).append(",");
    }/*from   ww  w  .j  a v a 2s  .  c o m*/

    if (result.length() > 0 && result.charAt(result.length() - 1) == ',') {
        result.deleteCharAt(result.length() - 1);
    }

    return result.toString();
}

---

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