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:org.apache.rat.report.xml.writer.impl.base.XmlWriter.java

private void rawWrite(final CharSequence sequence) throws IOException {
    for (int i = 0; i < sequence.length(); i++) {
        final char charAt = sequence.charAt(i);
        writer.write(charAt);/*from w  ww.j  a  v a2 s.com*/
    }
}

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From source file:org.cosmo.common.util.Util.java

public static byte[] UTF8(CharSequence str) {

    if (str.length() == 0) {
        return Constants.EmptyByteMarker;
    }//from   w  w w.  j a  va 2 s .  c o  m

    int strlen = str.length();
    int utflen = 0;
    int c, count = 0;

    /* use charAt instead of copying String to char array */
    for (int i = 0; i < strlen; i++) {
        c = str.charAt(i);
        if ((c >= 0x0001) && (c <= 0x007F)) {
            utflen++;
        } else if (c > 0x07FF) {
            utflen += 3;
        } else {
            utflen += 2;
        }
    }

    byte[] bytearr = new byte[utflen];

    int i = 0;
    for (i = 0; i < strlen; i++) {
        c = str.charAt(i);
        if (!((c >= 0x0001) && (c <= 0x007F)))
            break;
        bytearr[count++] = (byte) c;
    }

    for (; i < strlen; i++) {
        c = str.charAt(i);
        if ((c >= 0x0001) && (c <= 0x007F)) {
            bytearr[count++] = (byte) c;

        } else if (c > 0x07FF) {
            bytearr[count++] = (byte) (0xE0 | ((c >> 12) & 0x0F));
            bytearr[count++] = (byte) (0x80 | ((c >> 6) & 0x3F));
            bytearr[count++] = (byte) (0x80 | ((c >> 0) & 0x3F));
        } else {
            bytearr[count++] = (byte) (0xC0 | ((c >> 6) & 0x1F));
            bytearr[count++] = (byte) (0x80 | ((c >> 0) & 0x3F));
        }
    }
    return bytearr;
}

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From source file:fabrice.CSVPrinter.java

private void printAndEscape(final CharSequence value, final int offset, final int len) throws IOException {
    int start = offset;
    int pos = offset;
    final int end = offset + len;

    final char delim = format.getDelimiter();
    final char escape = format.getEscapeCharacter().charValue();

    while (pos < end) {
        char c = value.charAt(pos);
        if (c == CR || c == LF || c == delim || c == escape) {
            // write out segment up until this char
            if (pos > start) {
                out.append(value, start, pos);
            }/*  w  ww.  j  av  a  2s  .  c  o m*/
            if (c == LF) {
                c = 'n';
            } else if (c == CR) {
                c = 'r';
            }

            out.append(escape);
            out.append(c);

            start = pos + 1; // start on the current char after this one
        }

        pos++;
    }

    // write last segment
    if (pos > start) {
        out.append(value, start, pos);
    }
}

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From source file:com.dwdesign.tweetings.adapter.UserAutoCompleteAdapter.java

@Override
public Cursor runQueryOnBackgroundThread(CharSequence constraint) {
    if (mCursorClosed)
        return null;
    final FilterQueryProvider filter = getFilterQueryProvider();
    if (filter != null)
        return filter.runQuery(constraint);
    final StringBuilder where = new StringBuilder();
    constraint = constraint != null ? constraint.toString().replaceAll("_", "^_") : null;
    constraint = constraint != null ? constraint.toString().replaceAll("'", "") : null;
    isHash = false;/* ww  w .j a v a  2 s  . c o m*/
    if (constraint != null) {
        if (constraint.length() > 1 && constraint.charAt(0) == '@') {
            isHash = false;

            mLookupText = null;
            final String lookup = constraint.subSequence(1, constraint.length() - 1).toString();
            where.append(CachedUsers.SCREEN_NAME + " LIKE '" + lookup + "%' ESCAPE '^'");
            where.append(" OR ");
            where.append(CachedUsers.NAME + " LIKE '" + lookup + "%' ESCAPE '^'");
            return mResolver.query(CachedUsers.CONTENT_URI, CachedUsers.COLUMNS,
                    lookup != null ? where.toString() : null, null, null);
        } else if (constraint.length() > 0 && constraint.charAt(0) == '@') {
            isHash = false;
            mLookupText = null;

            return mResolver.query(CachedUsers.CONTENT_URI, CachedUsers.COLUMNS, null, null, null);
        } else if (constraint.length() > 1 && constraint.charAt(0) == '#') {
            isHash = true;
            mLookupText = constraint.toString();
            where.append(Statuses.TEXT_PLAIN + " LIKE '%" + constraint + "%' ESCAPE '^'");
            return mResolver.query(Statuses.CONTENT_URI, Statuses.COLUMNS,
                    constraint != null ? where.toString() : null, null, null);
        } else if (constraint.length() > 0 && constraint.charAt(0) == '#') {
            isHash = true;
            mLookupText = null;

            return mResolver.query(Statuses.CONTENT_URI, Statuses.COLUMNS, null, null, null);
        }
    }
    return null;
}

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From source file:br.msf.commons.util.CharSequenceUtils.java

public static Map<Character, Integer> getCharCount(final int fromIndex, final CharSequence sequence,
        final Boolean caseSensitive) {
    ArgumentUtils.rejectIfOutOfBounds(fromIndex, 0, length(sequence) - 1);
    if (isEmptyOrNull(sequence)) {
        return Collections.EMPTY_MAP;
    }/* w w w .  j av  a2s. c o m*/
    final Map<Character, Integer> chars = new TreeMap<Character, Integer>();
    for (int i = fromIndex; i < length(sequence); i++) {
        Character ch = caseSensitive ? sequence.charAt(i) : Character.toLowerCase(sequence.charAt(i));
        Integer count = chars.get(ch);
        chars.put(ch, (count == null) ? 1 : count + 1);
    }
    return chars;
}

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From source file:com.android.screenspeak.eventprocessor.ProcessorPhoneticLetters.java

/**
 * Handle an event that indicates a text is being traversed at character
 * granularity./* w ww  .j a  va2s .  c om*/
 */
private void processTraversalEvent(AccessibilityEvent event) {
    final CharSequence text = AccessibilityEventUtils.getEventTextOrDescription(event);
    if (TextUtils.isEmpty(text)) {
        return;
    }

    String letter;
    if ((event.getAction() == AccessibilityNodeInfoCompat.ACTION_NEXT_AT_MOVEMENT_GRANULARITY
            || event.getAction() == AccessibilityNodeInfoCompat.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY)
            && event.getFromIndex() >= 0 && event.getFromIndex() < text.length()) {
        letter = String.valueOf(text.charAt(event.getFromIndex()));
    } else {
        return;
    }

    String phoneticLetter = getPhoneticLetter(Locale.getDefault().toString(), letter);
    if (phoneticLetter != null) {
        postPhoneticLetterRunnable(phoneticLetter);
    }
}

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From source file:it.unimi.dsi.util.ImmutableExternalPrefixMap.java

private boolean isEncodable(final CharSequence s) {
    for (int i = s.length(); i-- != 0;)
        if (!char2symbol.containsKey(s.charAt(i)))
            return false;
    return true;/*  w  w w.  j  a va  2 s  .  c  om*/
}

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From source file:org.apache.rat.report.xml.writer.impl.base.XmlWriter.java

private boolean isValidName(final CharSequence sequence) {
    boolean result = true;
    final int length = sequence.length();
    for (int i = 0; i < length; i++) {
        char character = sequence.charAt(i);
        if (i == 0) {
            if (!isValidNameStart(character)) {
                result = false;/*w w  w  .  j  a va 2 s .  com*/
                break;
            }
        } else {
            if (!isValidNameBody(character)) {
                result = false;
                break;
            }
        }
    }
    return result;
}

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From source file:org.apache.fop.fonts.MultiByteFont.java

/**
 * Map sequence CS, comprising a sequence of UTF-16 encoded Unicode Code Points, to
 * an output character sequence GS, comprising a sequence of Glyph Indices. N.B. Unlike
 * mapChar(), this method does not make use of embedded subset encodings.
 * @param cs a CharSequence containing UTF-16 encoded Unicode characters
 * @returns a CharSequence containing glyph indices
 *//*from w w  w  . ja va  2 s .  com*/
private GlyphSequence mapCharsToGlyphs(CharSequence cs) {
    IntBuffer cb = IntBuffer.allocate(cs.length());
    IntBuffer gb = IntBuffer.allocate(cs.length());
    int gi;
    int giMissing = findGlyphIndex(Typeface.NOT_FOUND);
    for (int i = 0, n = cs.length(); i < n; i++) {
        int cc = cs.charAt(i);
        if ((cc >= 0xD800) && (cc < 0xDC00)) {
            if ((i + 1) < n) {
                int sh = cc;
                int sl = cs.charAt(++i);
                if ((sl >= 0xDC00) && (sl < 0xE000)) {
                    cc = 0x10000 + ((sh - 0xD800) << 10) + ((sl - 0xDC00) << 0);
                } else {
                    throw new IllegalArgumentException(
                            "ill-formed UTF-16 sequence, " + "contains isolated high surrogate at index " + i);
                }
            } else {
                throw new IllegalArgumentException(
                        "ill-formed UTF-16 sequence, " + "contains isolated high surrogate at end of sequence");
            }
        } else if ((cc >= 0xDC00) && (cc < 0xE000)) {
            throw new IllegalArgumentException(
                    "ill-formed UTF-16 sequence, " + "contains isolated low surrogate at index " + i);
        }
        notifyMapOperation();
        gi = findGlyphIndex(cc);
        if (gi == SingleByteEncoding.NOT_FOUND_CODE_POINT) {
            warnMissingGlyph((char) cc);
            gi = giMissing;
        }
        cb.put(cc);
        gb.put(gi);
    }
    cb.flip();
    gb.flip();
    return new GlyphSequence(cb, gb, null);
}

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From source file:org.apache.rat.report.xml.writer.impl.base.XmlWriter.java

private void writeEscaped(final CharSequence content, boolean isAttributeContent) throws IOException {
    final int length = content.length();
    for (int i = 0; i < length; i++) {
        char character = content.charAt(i);
        if (character == '&') {
            writer.write("&amp;");
        } else if (character == '<') {
            writer.write("&lt;");
        } else if (character == '>') {
            writer.write("&gt;");
        } else if (isAttributeContent && character == '\'') {
            writer.write("&apos;");
        } else if (isAttributeContent && character == '\"') {
            writer.write("&quot;");
        } else if (isOutOfRange(character)) {
            writer.write('?');
        } else {//from ww  w  . j  av  a2 s .  c  o  m
            writer.write(character);
        }
    }
}

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