Example usage for java.lang CharSequence charAt

Introduction

In this page you can find the example usage for java.lang CharSequence charAt.

Prototype

char charAt(int index);

Source Link

Document

Returns the char value at the specified index.

Usage

From source file:Main.java

/**
 * Tells whether has a flag in the same line as mentioned by fromIndex character.
 * @param sequence - text/*w  w w.  j  a v  a2  s .c  o m*/
 * @param flag - expected flag.
 * @param fromIndex - index representing the line.
 * @return
 */
public static boolean hasFlagSameLine(CharSequence sequence, char flag, int fromIndex) {

    for (int i = fromIndex; i < sequence.length(); i++) {
        char c = sequence.charAt(i);
        if (c == NEW_LINE) {
            return false;
        }

        if (c == flag) {
            return i != fromIndex;
        }
    }

    return false;
}

From source file:Main.java

/**
 * Get the longest NCName that is a suffix of a character sequence.
 * //ww w.  j  av a2 s . c  o m
 * @param s
 *        The character sequence.
 * @return The String which is the longest suffix of the character sequence
 *         {@code s} that is an NCName, or {@code null} if the character
 *         sequence {@code s} does not have a suffix that is an NCName.
 */
@Nullable
public static String getNCNameSuffix(CharSequence s) {
    if (s.length() > 1 && s.charAt(0) == '_' && s.charAt(1) == ':') {
        return null;
    }
    int localPartStartIndex = getNCNameSuffixIndex(s);
    if (localPartStartIndex > -1) {
        return s.toString().substring(localPartStartIndex);
    } else {
        return null;
    }
}

From source file:StandardUtilities.java

/**
 * Returns the number of leading white space characters in the
 * specified string./*from   www .ja  va  2s. c  o  m*/
 *
 * @param str The string
 * @since jEdit 4.3pre15
 */
public static int getLeadingWhiteSpace(CharSequence str) {
    int whitespace = 0;
    loop: for (; whitespace < str.length();) {
        switch (str.charAt(whitespace)) {
        case ' ':
        case '\t':
            whitespace++;
            break;
        default:
            break loop;
        }
    }
    return whitespace;
}

From source file:Main.java

public static boolean isEmpty(CharSequence input) {
    if (input == null || "".equals(input))
        return true;

    for (int i = 0; i < input.length(); i++) {
        char c = input.charAt(i);
        if (c != ' ' && c != '\t' && c != '\r' && c != '\n') {
            return false;
        }/*from  ww  w . j  ava  2s.  c om*/
    }
    return true;
}

From source file:Main.java

/**
 * Test whether the given string matches the given substring
 * at the given index.//from  www  . j  a  v a 2 s  . co  m
 * @param str the original string (or StringBuilder)
 * @param index the index in the original string to start matching against
 * @param substring the substring to match at the given index
 */
public static boolean substringMatch(CharSequence str, int index, CharSequence substring) {
    for (int j = 0; j < substring.length(); j++) {
        int i = index + j;
        if (i >= str.length() || str.charAt(i) != substring.charAt(j)) {
            return false;
        }
    }
    return true;
}

From source file:Main.java

/**
 * @since 4.4//from  www  .  j av a2 s . c o m
 */
public static boolean containsBlanks(final CharSequence s) {
    if (s == null) {
        return false;
    }
    for (int i = 0; i < s.length(); i++) {
        if (Character.isWhitespace(s.charAt(i))) {
            return true;
        }
    }
    return false;
}

From source file:Main.java

/**
 * Returns true if the parameter is null or contains only whitespace
 *///  www  .j av a2s  . com
public static boolean isBlank(final CharSequence s) {
    if (s == null) {
        return true;
    }
    for (int i = 0; i < s.length(); i++) {
        if (!Character.isWhitespace(s.charAt(i))) {
            return false;
        }
    }
    return true;
}

From source file:StandardUtilities.java

/**
 * Returns the width of the leading white space in the specified
 * string.// w ww  .j  a v a2 s .com
 * @param str The string
 * @param tabSize The tab size
 * @since jEdit 4.3pre15
 */
public static int getLeadingWhiteSpaceWidth(CharSequence str, int tabSize) {
    int whitespace = 0;
    loop: for (int i = 0; i < str.length(); i++) {
        switch (str.charAt(i)) {
        case ' ':
            whitespace++;
            break;
        case '\t':
            whitespace += tabSize - whitespace % tabSize;
            break;
        default:
            break loop;
        }
    }
    return whitespace;
}

From source file:Main.java

public static CharSequence getJellyBeanFix(CharSequence input) {
    ArrayList<Integer> resultList = new ArrayList<Integer>();

    for (int i = 0; i < input.length(); i++) {
        int iValue = (int) input.charAt(i);
        if (iValue == 0x1031) {
            resultList.add(JBFIX_CHAR);/*from w  w  w.  j a va2s .c  o  m*/
            resultList.add(iValue);
        } else if (iValue == 0x1039) {
            resultList.add(iValue);
            resultList.add(JBFIX_CHAR);
        } else {
            resultList.add(iValue);
        }
    }

    char[] chArray = new char[resultList.size()];
    int count = 0;
    for (Integer ch : resultList) {
        chArray[count++] = (char) ch.intValue();
    }

    return String.valueOf(chArray);
}

From source file:Main.java

public static boolean isMyChar(CharSequence label) {
    if (label == null)
        return false;
    boolean isMyChar = false;
    for (int i = 0; i < label.length(); i++) {
        if (isMyChar(label.charAt(i))) {
            isMyChar = true;/*  ww  w  . j  a  v a  2s .c  o m*/
            break;
        }
    }
    return isMyChar;
}