Java BreakIterator.isBoundary方法代碼示例

import java.text.BreakIterator; //導入方法依賴的package包/類
private void testIsBoundary(BreakIterator bi, String text, int[] boundaries) {
    logln("testIsBoundary():");
    int p = 1;
    boolean isB;
    for (int i = 0; i <= text.length(); i++) {  // change to <= when new BI code goes in
        isB = bi.isBoundary(i);
        logln("bi.isBoundary(" + i + ") -> " + isB);

        if (i == boundaries[p]) {
            if (!isB)
                errln("Wrong result from isBoundary() for " + i + ": expected true, got false");
            ++p;
        }
        else {
            if (isB)
                errln("Wrong result from isBoundary() for " + i + ": expected false, got true");
        }
    }
}
 

import java.text.BreakIterator; //導入方法依賴的package包/類
public void TestBug4153072() {
    BreakIterator iter = BreakIterator.getWordInstance();
    String str = "...Hello, World!...";
    int begin = 3;
    int end = str.length() - 3;
    boolean gotException = false;
    boolean dummy;

    iter.setText(new StringCharacterIterator(str, begin, end, begin));
    for (int index = -1; index < begin + 1; ++index) {
        try {
            dummy = iter.isBoundary(index);
            if (index < begin)
                errln("Didn't get exception with offset = " + index +
                                " and begin index = " + begin);
        }
        catch (IllegalArgumentException e) {
            if (index >= begin)
                errln("Got exception with offset = " + index +
                                " and begin index = " + begin);
        }
    }
}
 

import java.text.BreakIterator; //導入方法依賴的package包/類
@Override
public boolean onDoubleTap(MotionEvent e) {

    int x = (int) e.getX();
    int y = (int) e.getY();

    // find the position
    int offset = getOffsetForPosition(x, y);

    // select word
    BreakIterator iterator = BreakIterator.getWordInstance();
    iterator.setText(getText().toString());

    // start and end are the word boundaries;
    int start;
    if (iterator.isBoundary(offset)) {
        start = offset;
    } else {
        start = iterator.preceding(offset);
    }
    int end = iterator.following(offset);

    // handle tapping at the very beginning or end.
    if (end == BreakIterator.DONE) {
        end = start;
        start = iterator.preceding(offset);
        if (start == BreakIterator.DONE) start = end;
    }

    setSelection(start, end);

    return super.onDoubleTap(e);
}
 

import java.text.BreakIterator; //導入方法依賴的package包/類
/**
 * Implements the "Final_Cased" condition
 *
 * Specification: Within the closest word boundaries containing C, there is a cased
 * letter before C, and there is no cased letter after C.
 *
 * Regular Expression:
 *   Before C: [{cased==true}][{wordBoundary!=true}]*
 *   After C: !([{wordBoundary!=true}]*[{cased}])
 */
private static boolean isFinalCased(String src, int index, Locale locale) {
    BreakIterator wordBoundary = BreakIterator.getWordInstance(locale);
    wordBoundary.setText(src);
    int ch;

    // Look for a preceding 'cased' letter
    for (int i = index; (i >= 0) && !wordBoundary.isBoundary(i);
            i -= Character.charCount(ch)) {

        ch = src.codePointBefore(i);
        if (isCased(ch)) {

            int len = src.length();
            // Check that there is no 'cased' letter after the index
            for (i = index + Character.charCount(src.codePointAt(index));
                    (i < len) && !wordBoundary.isBoundary(i);
                    i += Character.charCount(ch)) {

                ch = src.codePointAt(i);
                if (isCased(ch)) {
                    return false;
                }
            }

            return true;
        }
    }

    return false;
}