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:com.dalabs.droop.util.OptionsFileUtil.java

/**
 * Expands any options file that may be present in the given set of arguments.
 *
 * @param args the given arguments/*from  www  .j av  a  2  s .  c  o  m*/
 * @return a new string array that contains the expanded arguments.
 * @throws Exception
 */
public static String[] expandArguments(String[] args) throws Exception {
    List<String> options = new ArrayList<String>();

    for (int i = 0; i < args.length; i++) {
        if (args[i].equals(Droop.DROOP_OPTIONS_FILE_SPECIFIER)) {
            if (i == args.length - 1) {
                throw new Exception("Missing options file");
            }

            String fileName = args[++i];
            File optionsFile = new File(fileName);
            BufferedReader reader = null;
            StringBuilder buffer = new StringBuilder();
            try {
                reader = new BufferedReader(new FileReader(optionsFile));
                String nextLine = null;
                while ((nextLine = reader.readLine()) != null) {
                    nextLine = nextLine.trim();
                    if (nextLine.length() == 0 || nextLine.startsWith("#")) {
                        // empty line or comment
                        continue;
                    }

                    buffer.append(nextLine);
                    if (nextLine.endsWith("\\")) {
                        if (buffer.charAt(0) == '\'' || buffer.charAt(0) == '"') {
                            throw new Exception("Multiline quoted strings not supported in file(" + fileName
                                    + "): " + buffer.toString());
                        }
                        // Remove the trailing back-slash and continue
                        buffer.deleteCharAt(buffer.length() - 1);
                    } else {
                        // The buffer contains a full option
                        options.add(removeQuotesEncolosingOption(fileName, buffer.toString()));
                        buffer.delete(0, buffer.length());
                    }
                }

                // Assert that the buffer is empty
                if (buffer.length() != 0) {
                    throw new Exception(
                            "Malformed option in options file(" + fileName + "): " + buffer.toString());
                }
            } catch (IOException ex) {
                throw new Exception("Unable to read options file: " + fileName, ex);
            } finally {
                if (reader != null) {
                    try {
                        reader.close();
                    } catch (IOException ex) {
                        LOG.info("Exception while closing reader", ex);
                    }
                }
            }
        } else {
            // Regular option. Parse it and put it on the appropriate list
            options.add(args[i]);
        }
    }

    return options.toArray(new String[options.size()]);
}

From source file:com.cloudera.sqoop.util.OptionsFileUtil.java

/**
 * Expands any options file that may be present in the given set of arguments.
 *
 * @param args the given arguments/*from w  w w .j  ava 2  s .  c om*/
 * @return a new string array that contains the expanded arguments.
 * @throws Exception
 */
public static String[] expandArguments(String[] args) throws Exception {
    List<String> options = new ArrayList<String>();

    for (int i = 0; i < args.length; i++) {
        if (args[i].equals(Sqoop.SQOOP_OPTIONS_FILE_SPECIFIER)) {
            if (i == args.length - 1) {
                throw new Exception("Missing options file");
            }

            String fileName = args[++i];
            File optionsFile = new File(fileName);
            BufferedReader reader = null;
            StringBuilder buffer = new StringBuilder();
            try {
                reader = new BufferedReader(new FileReader(optionsFile));
                String nextLine = null;
                while ((nextLine = reader.readLine()) != null) {
                    nextLine = nextLine.trim();
                    if (nextLine.length() == 0 || nextLine.startsWith("#")) {
                        // empty line or comment
                        continue;
                    }

                    buffer.append(nextLine);
                    if (nextLine.endsWith("\\")) {
                        if (buffer.charAt(0) == '\'' || buffer.charAt(0) == '"') {
                            throw new Exception("Multiline quoted strings not supported in file(" + fileName
                                    + "): " + buffer.toString());
                        }
                        // Remove the trailing back-slash and continue
                        buffer.deleteCharAt(buffer.length() - 1);
                    } else {
                        // The buffer contains a full option
                        options.add(removeQuotesEncolosingOption(fileName, buffer.toString()));
                        buffer.delete(0, buffer.length());
                    }
                }

                // Assert that the buffer is empty
                if (buffer.length() != 0) {
                    throw new Exception(
                            "Malformed option in options file(" + fileName + "): " + buffer.toString());
                }
            } catch (IOException ex) {
                throw new Exception("Unable to read options file: " + fileName, ex);
            } finally {
                if (reader != null) {
                    try {
                        reader.close();
                    } catch (IOException ex) {
                        LOG.info("Exception while closing reader", ex);
                    }
                }
            }
        } else {
            // Regular option. Parse it and put it on the appropriate list
            options.add(args[i]);
        }
    }

    return options.toArray(new String[options.size()]);
}

From source file:de.codesourcery.jasm16.utils.Misc.java

public static String removeLeadingWhitespace(String input) {
    StringBuilder output = new StringBuilder(input);
    while (output.length() > 0 && Character.isWhitespace(output.charAt(0))) {
        output.delete(0, 1);//www . ja va 2 s. c  o m
    }
    return output.toString();
}

From source file:org.ejbca.util.StringTools.java

/**
 * Strips all special characters from a string by replacing them with a forward slash, '/'.
 * This method is used for various Strings, like SubjectDNs and usernames.
 *
 * @param str the string whose contents will be stripped.
 *
 * @return the stripped version of the input string.
 *//*from   w w  w . j av  a  2s .  c om*/
public static String strip(final String str) {
    if (str == null) {
        return null;
    }
    final StringBuilder buf = new StringBuilder(str);
    for (int i = 0; i < stripChars.length; i++) {
        int index = 0;
        int end = buf.length();
        while (index < end) {
            if (buf.charAt(index) == stripChars[i]) {
                // Found an illegal character. Replace it with a '/'.
                buf.setCharAt(index, '/');
            } else if (buf.charAt(index) == '\\') {
                // Found an escape character.
                if (index + 1 == end) {
                    // If this is the last character we should remove it.
                    buf.setCharAt(index, '/');
                } else if (!isAllowed(buf.charAt(index + 1))) {
                    // We did not allow this character to be escaped. Replace both the \ and the character with a single '/'.
                    buf.setCharAt(index, '/');
                    buf.deleteCharAt(index + 1);
                    end--;
                } else {
                    index++;
                }
            }
            index++;
        }
    }
    return buf.toString();
}

From source file:org.loklak.geo.GeoNames.java

public static String normalize(final String text) {
    final StringBuilder l = new StringBuilder();
    for (int i = 0; i < text.length(); i++) {
        final char c = text.charAt(i);
        if (Character.isLetterOrDigit(c)) {
            l.append(Character.toLowerCase(c));
        } else {/*from w  w w . java2 s . co m*/
            if (l.length() > 0 && l.charAt(l.length() - 1) != ' ')
                l.append(' ');
        }
    }
    if (l.length() > 0 && l.charAt(l.length() - 1) == ' ')
        l.setLength(l.length() - 1);
    return l.toString();
}

From source file:com.hybridbpm.core.util.HybridbpmCoreUtil.java

public static String checkClassName(String name) {
    name = name.replaceAll("\\s+", "").replaceAll("\\W", "");
    StringBuilder result = new StringBuilder();
    for (Character c : name.toCharArray()) {
        if (Character.isJavaIdentifierPart(c)) {
            result.append(c);//w ww  . j  a  v a2 s  .  c  o  m
        } else {
            result.append("_");
        }
    }
    while (!Character.isJavaIdentifierStart(result.charAt(0))) {
        result.deleteCharAt(0);
    }
    return Character.toUpperCase(result.charAt(0)) + result.substring(1);
}

From source file:com.hybridbpm.core.util.HybridbpmCoreUtil.java

public static String generateFieldName(String name) {
    String nameValue = name;/*from   w  w  w.j  av a  2s .  c o  m*/
    StringBuilder result = new StringBuilder();
    for (Character c : nameValue.toCharArray()) {
        if (Character.isJavaIdentifierPart(c)) {
            result.append(c);
        } else {
            result.append("");
        }
    }
    while (!Character.isJavaIdentifierStart(result.charAt(0))) {
        result.deleteCharAt(0);
    }
    return Character.toLowerCase(result.charAt(0)) + result.substring(1);
}

From source file:com.magic.util.StringUtil.java

/** Make sure the string starts with a forward slash but does not end with one; converts back-slashes to forward-slashes; if in String is null or empty, returns zero length string. */
public static String cleanUpPathPrefix(String prefix) {
    if (prefix == null || prefix.length() == 0)
        return "";

    StringBuilder cppBuff = new StringBuilder(prefix.replace('\\', '/'));

    if (cppBuff.charAt(0) != '/') {
        cppBuff.insert(0, '/');
    }/*w w w. j a  va2 s. c o  m*/
    if (cppBuff.charAt(cppBuff.length() - 1) == '/') {
        cppBuff.deleteCharAt(cppBuff.length() - 1);
    }
    return cppBuff.toString();
}

From source file:com.hybridbpm.core.util.HybridbpmCoreUtil.java

public static String generateClassName(String name, String version) {
    StringBuilder nameValue = new StringBuilder();
    nameValue.append(name != null ? name : "").append("_").append(version != null ? version : "_");

    StringBuilder result = new StringBuilder();
    for (Character c : nameValue.toString().toCharArray()) {
        if (Character.isJavaIdentifierPart(c)) {
            result.append(c);// w w w.ja v  a 2s . c o  m
        } else {
            result.append("_");
        }
    }
    while (!Character.isJavaIdentifierStart(result.charAt(0))) {
        result.deleteCharAt(0);
    }
    return Character.toUpperCase(result.charAt(0)) + result.substring(1);
}

From source file:org.apache.jackrabbit.oak.plugins.document.util.Utils.java

public static String getPreviousPathFor(String path, Revision r, int height) {
    if (!PathUtils.isAbsolute(path)) {
        throw new IllegalArgumentException("path must be absolute: " + path);
    }/*from ww w .  ja  v a  2 s . c  o  m*/
    StringBuilder sb = new StringBuilder(path.length() + REVISION_LENGTH + 3);
    sb.append("p").append(path);
    if (sb.charAt(sb.length() - 1) != '/') {
        sb.append('/');
    }
    r.toStringBuilder(sb).append("/").append(height);
    return sb.toString();
}