TextUtils.java

/*
 * Copyright 2010-2011 Øyvind Berg (elacin@gmail.com)
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */



package org.elacin.pdfextract.style;

import org.elacin.pdfextract.content.StyledText;
import org.elacin.pdfextract.geom.HasPosition;

import org.jetbrains.annotations.NotNull;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

/**
 * Created by IntelliJ IDEA. User: elacin Date: May 19, 2010 Time: 3:46:09 AM To change this
 * template use File | Settings | File Templates.
 */
public class TextUtils {

// -------------------------- PUBLIC STATIC METHODS --------------------------
    @NotNull
    public static Style findDominatingStyle(@NotNull final Collection<? extends HasPosition> contents) {

        if (!listContainsStyledText(contents)) {
            return Style.NO_STYLE;
        }

        Map<Style, Integer> letterCountPerStyle = new HashMap<Style, Integer>(10);

        for (HasPosition content : contents) {
            if (!(content instanceof StyledText)) {
                continue;
            }

            StyledText  text  = (StyledText) content;
            final Style style = text.getStyle();

            if (!letterCountPerStyle.containsKey(style)) {
                letterCountPerStyle.put(style, 0);
            }

            final int numChars = text.getText().length();

            letterCountPerStyle.put(style, letterCountPerStyle.get(style) + numChars);
        }

        int   highestNumChars = -1;
        Style style           = null;

        for (Map.Entry<Style, Integer> entry : letterCountPerStyle.entrySet()) {
            if (entry.getValue() > highestNumChars) {
                style           = entry.getKey();
                highestNumChars = entry.getValue();
            }
        }

        return style;
    }

    public static boolean listContainsStyledText(@NotNull final Collection<? extends HasPosition> list) {

        for (HasPosition content : list) {
            if (content instanceof StyledText) {
                return true;
            }
        }

        return false;
    }
}