Example usage for java.text BreakIterator getLineInstance

Introduction

In this page you can find the example usage for java.text BreakIterator getLineInstance.

Prototype

public static BreakIterator getLineInstance() 

Source Link

Document

Returns a new BreakIterator instance for line breaks for the Locale#getDefault() default locale .

Usage

From source file:com.conversantmedia.mapreduce.tool.RunJob.java

private static void splitLine(List<String> lines, String text, int maxLength) {
    BreakIterator boundary = BreakIterator.getLineInstance();
    boundary.setText(text);/* ww  w .  j  a  v  a2s. c o m*/
    int start = boundary.first();
    int end = boundary.next();
    int lineLength = 0;
    StringBuilder buffer = new StringBuilder();
    while (end != BreakIterator.DONE) {
        String word = text.substring(start, end);
        lineLength = lineLength + word.length();
        if (lineLength > maxLength) {
            lineLength = word.length();
            lines.add(buffer.toString());
            buffer.setLength(0);
        }
        buffer.append(word);
        start = end;
        end = boundary.next();
    }
    lines.add(buffer.toString());
}

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From source file:net.sf.jasperreports.engine.fill.SimpleTextLineWrapper.java

protected void startParagraph(String text, int start, boolean truncateAtChar) {
    paragraphText = text;/*  w  w w  .  j  a v  a  2  s. com*/
    paragraphTruncateAtChar = truncateAtChar;

    char[] textChars = text.toCharArray();
    // direction is per paragraph
    paragraphLeftToRight = isLeftToRight(textChars);
    paragraphMeasureExact = isParagraphMeasureExact(textChars);

    if (logTrace) {
        log.trace("paragraph start at " + start + ", truncate at char " + truncateAtChar + ", LTR "
                + paragraphLeftToRight + ", exact measure " + paragraphMeasureExact);
    }

    paragraphOffset = start;
    paragraphPosition = 0;

    paragraphBreakIterator = truncateAtChar ? BreakIterator.getCharacterInstance()
            : BreakIterator.getLineInstance();
    paragraphBreakIterator.setText(paragraphText);
}

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From source file:net.sf.jasperreports.engine.fill.SimpleTextLineWrapper.java

protected int measureExactLineBreakIndex(float width, int endLimit, boolean requireWord) {
    //FIXME would it be faster to create and cache a LineBreakMeasurer for the whole paragraph?
    Map<Attribute, Object> attributes = new HashMap<Attribute, Object>();
    // we only need the font as it includes the size and style
    attributes.put(TextAttribute.FONT, fontInfo.fontInfo.font);

    String textLine = paragraphText.substring(paragraphPosition, endLimit);
    AttributedString attributedLine = new AttributedString(textLine, attributes);

    // we need a fresh iterator for the line
    BreakIterator breakIterator = paragraphTruncateAtChar ? BreakIterator.getCharacterInstance()
            : BreakIterator.getLineInstance();
    LineBreakMeasurer breakMeasurer = new LineBreakMeasurer(attributedLine.getIterator(), breakIterator,
            context.getFontRenderContext());
    int breakIndex = breakMeasurer.nextOffset(width, endLimit - paragraphPosition, requireWord)
            + paragraphPosition;//from   w w  w.j  a  v a2 s.  c o  m
    if (logTrace) {
        log.trace("exact line break index measured at " + (paragraphOffset + breakIndex));
    }

    return breakIndex;
}

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From source file:com.redhat.rcm.version.Cli.java

private static void printTextLine(final String line, final String indent, final int max, final PrintWriter pw) {
    final String fmt = "%s%-" + max + "s\n";

    final List<String> lines = new ArrayList<String>();

    final BreakIterator iter = BreakIterator.getLineInstance();
    iter.setText(line);/*from  ww w  .j av a2 s .  co  m*/

    int start = iter.first();
    int end = BreakIterator.DONE;
    final StringBuilder currentLine = new StringBuilder();
    String seg;
    while (start != BreakIterator.DONE && (end = iter.next()) != BreakIterator.DONE) {
        seg = line.substring(start, end);
        if (currentLine.length() + seg.length() > max) {
            lines.add(currentLine.toString());
            currentLine.setLength(0);
        }

        currentLine.append(seg);
        start = end;
    }

    if (currentLine.length() > 0) {
        lines.add(currentLine.toString());
    }

    for (final String ln : lines) {
        pw.printf(fmt, indent, ln);
    }
}

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From source file:net.sf.jasperreports.engine.fill.TextMeasurer.java

protected void appendTruncateSuffix(TextLineWrapper lineWrapper) {
    String truncateSuffx = getTruncateSuffix();
    if (truncateSuffx == null) {
        return;/*w w w.j a va 2 s . c  o  m*/
    }

    int lineStart = prevMeasuredState.textOffset;

    //advance from the line start until the next line start or the first newline
    String lineText = lineWrapper.getLineText(lineStart, measuredState.textOffset);
    int linePosition = lineText.length();

    //iterate to the beginning of the line
    boolean done = false;
    do {
        measuredState = prevMeasuredState.cloneState();

        String text = lineText.substring(0, linePosition) + truncateSuffx;
        boolean truncateAtChar = isToTruncateAtChar();
        TextLineWrapper lastLineWrapper = lineWrapper.lastLineWrapper(text, measuredState.textOffset,
                linePosition, truncateAtChar);

        BreakIterator breakIterator = truncateAtChar ? BreakIterator.getCharacterInstance()
                : BreakIterator.getLineInstance();
        breakIterator.setText(text);

        if (renderNextLine(lastLineWrapper, null, new int[] { 0 }, new TabStop[] { null },
                new boolean[] { false })) {
            int lastPos = lastLineWrapper.paragraphPosition();
            //test if the entire suffix fit
            if (lastPos == linePosition + truncateSuffx.length()) {
                //subtract the suffix from the offset
                measuredState.textOffset -= truncateSuffx.length();
                measuredState.textSuffix = truncateSuffx;
                done = true;
            } else {
                linePosition = breakIterator.preceding(linePosition);
                if (linePosition == BreakIterator.DONE) {
                    //if the text suffix did not fit the line, only the part of it that fits will show

                    //truncate the suffix
                    String actualSuffix = truncateSuffx.substring(0,
                            measuredState.textOffset - prevMeasuredState.textOffset);
                    //if the last text char is not a new line
                    if (prevMeasuredState.textOffset > 0
                            && lineWrapper.charAt(prevMeasuredState.textOffset - 1) != '\n') {
                        //force a new line so that the suffix is displayed on the last line
                        actualSuffix = '\n' + actualSuffix;
                    }
                    measuredState.textSuffix = actualSuffix;

                    //restore the next to last line offset
                    measuredState.textOffset = prevMeasuredState.textOffset;

                    done = true;
                }
            }
        } else {
            //if the line did not fit, leave it empty
            done = true;
        }
    } while (!done);
}

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From source file:com.redhat.rcm.version.Cli.java

private static void printKVLine(final String key, final String value, final String fmt, final int valMax,
        final PrintWriter pw) {
    final List<String> lines = new ArrayList<String>();

    final BreakIterator iter = BreakIterator.getLineInstance();
    iter.setText(value);//from w  ww  .  ja v  a2s .  c  om

    int start = iter.first();
    int end = BreakIterator.DONE;
    final StringBuilder currentLine = new StringBuilder();
    String seg;
    while (start != BreakIterator.DONE && (end = iter.next()) != BreakIterator.DONE) {
        seg = value.substring(start, end);
        if (currentLine.length() + seg.length() > valMax) {
            lines.add(currentLine.toString());
            currentLine.setLength(0);
        }

        currentLine.append(seg);
        start = end;
    }

    if (currentLine.length() > 0) {
        lines.add(currentLine.toString());
    }

    pw.printf(fmt, key, lines.isEmpty() ? "" : lines.get(0));
    if (lines.size() > 1) {
        for (int i = 1; i < lines.size(); i++) {
            // blank string to serve for indentation in format with two fields.
            pw.printf(fmt, "", lines.get(i));
        }
    }
}

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