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

Example 1 with CharacterIterator

use of java.text.CharacterIterator 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 CharacterIterator

use of java.text.CharacterIterator 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 3 with CharacterIterator

use of java.text.CharacterIterator 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 4 with CharacterIterator

use of java.text.CharacterIterator in project japid42 by branaway.

the class DirUtil method isClassname.

// public static boolean hasTags(String root) {
// String dirName = DirUtil.TAGSDIR;
// return containsTemplateFiles(root, dirName);
// }
// public static boolean hasJavaTags(String root) {
// String dirName = DirUtil.JAVATAGS;
// return containsTemplateFiles(root, dirName);
// }
//
// public static boolean hasLayouts(String root) {
// String dirName = DirUtil.LAYOUTDIR;
// return containsTemplateFiles(root, dirName);
// }
//
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 CharacterIterator

use of java.text.CharacterIterator in project intellij-community by JetBrains.

the class Strings method isCapitalized.

public static boolean isCapitalized(@NotNull String text, @NotNull TextRange range) {
    if (range.getLength() == 0)
        return false;
    CharacterIterator it = new StringCharacterIterator(text, range.getStartOffset() + 1, range.getEndOffset(), range.getStartOffset() + 1);
    boolean lowCase = true;
    for (char c = it.first(); c != CharacterIterator.DONE; c = it.next()) {
        lowCase = Character.isLowerCase(c);
    }
    return Character.isUpperCase(text.charAt(range.getStartOffset())) && lowCase;
}