Examples with StringCharacterIterator java.text.StringCharacterIterator used on opensource projects

Example 1 with StringCharacterIterator

use of java.text.StringCharacterIterator in project hadoop by apache.

the class Text method utf8Length.

/**
   * For the given string, returns the number of UTF-8 bytes
   * required to encode the string.
   * @param string text to encode
   * @return number of UTF-8 bytes required to encode
   */
public static int utf8Length(String string) {
    CharacterIterator iter = new StringCharacterIterator(string);
    char ch = iter.first();
    int size = 0;
    while (ch != CharacterIterator.DONE) {
        if ((ch >= 0xD800) && (ch < 0xDC00)) {
            // surrogate pair?
            char trail = iter.next();
            if ((trail > 0xDBFF) && (trail < 0xE000)) {
                // valid pair
                size += 4;
            } else {
                // invalid pair
                size += 3;
                // rewind one
                iter.previous();
            }
        } else if (ch < 0x80) {
            size++;
        } else if (ch < 0x800) {
            size += 2;
        } else {
            // ch < 0x10000, that is, the largest char value
            size += 3;
        }
        ch = iter.next();
    }
    return size;
}

Example 2 with StringCharacterIterator

use of java.text.StringCharacterIterator in project OpenNotebook by jaltekruse.

the class MathObjectAttribute method formatForXML.

public static String formatForXML(String aText) {
    final StringBuilder result = new StringBuilder();
    final StringCharacterIterator iterator = new StringCharacterIterator(aText);
    char character = iterator.current();
    while (character != CharacterIterator.DONE) {
        if (character == '<') {
            result.append("&lt;");
        } else if (character == '>') {
            result.append("&gt;");
        } else if (character == '\"') {
            result.append("&quot;");
        } else if (character == '\'') {
            result.append("&#039;");
        } else if (character == '&') {
            result.append("&amp;");
        } else {
            //the char is not a special one
            //add it to the result as is
            result.append(character);
        }
        character = iterator.next();
    }
    return result.toString();
}

Example 3 with StringCharacterIterator

use of java.text.StringCharacterIterator in project swagger-core by swagger-api.

the class PathUtils method parsePath.

public static String parsePath(String uri, Map<String, String> patterns) {
    if (uri == null) {
        return null;
    } else if (StringUtils.isBlank(uri)) {
        return String.valueOf(SLASH);
    }
    CharacterIterator ci = new StringCharacterIterator(uri);
    StringBuilder pathBuffer = new StringBuilder();
    char c = ci.first();
    if (c == CharacterIterator.DONE) {
        return String.valueOf(SLASH);
    }
    do {
        if (c == OPEN) {
            String regexBuffer = cutParameter(ci, patterns);
            if (regexBuffer == null) {
                LOGGER.warn("Operation path \"" + uri + "\" contains syntax error.");
                return null;
            }
            pathBuffer.append(regexBuffer);
        } else {
            int length = pathBuffer.length();
            if (!(c == SLASH && (length != 0 && pathBuffer.charAt(length - 1) == SLASH))) {
                pathBuffer.append(c);
            }
        }
    } while ((c = ci.next()) != CharacterIterator.DONE);
    return pathBuffer.toString();
}

Example 4 with StringCharacterIterator

use of java.text.StringCharacterIterator in project Japid by branaway.

the class DirUtil method isClassname.

public static boolean isClassname(String classname) {
    if (classname == null || classname.length() == 0)
        return false;
    CharacterIterator iter = new StringCharacterIterator(classname);
    // Check first character (there should at least be one character for each part) ...
    char c = iter.first();
    if (c == CharacterIterator.DONE)
        return false;
    if (!Character.isJavaIdentifierStart(c) && !Character.isIdentifierIgnorable(c))
        return false;
    c = iter.next();
    // Check the remaining characters, if there are any ...
    while (c != CharacterIterator.DONE) {
        if (!Character.isJavaIdentifierPart(c) && !Character.isIdentifierIgnorable(c))
            return false;
        c = iter.next();
    }
    return true;
}

Example 5 with StringCharacterIterator

use of java.text.StringCharacterIterator in project bazel by bazelbuild.

the class ASCIIPropertyListParser method parseQuotedString.

/**
     * Parses a string according to the format specified for ASCII property lists.
     * Such strings can contain escape sequences which are unescaped in this method.
     *
     * @param s The escaped string according to the ASCII property list format, without leading and trailing quotation marks.
     * @return The unescaped string in UTF-8 or ASCII format, depending on the contained characters.
     * @throws Exception If the string could not be properly parsed.
     */
public static synchronized String parseQuotedString(String s) throws UnsupportedEncodingException, CharacterCodingException {
    StringBuilder parsed = new StringBuilder();
    StringCharacterIterator iterator = new StringCharacterIterator(s);
    char c = iterator.current();
    while (iterator.getIndex() < iterator.getEndIndex()) {
        switch(c) {
            case '\\':
                {
                    //An escaped sequence is following
                    parsed.append(parseEscapedSequence(iterator));
                    break;
                }
            default:
                {
                    parsed.append(c);
                    break;
                }
        }
        c = iterator.next();
    }
    return parsed.toString();
}