Example usage for com.liferay.portal.kernel.util FileUtil toList

Introduction

In this page you can find the example usage for com.liferay.portal.kernel.util FileUtil toList.

Prototype

public static List<String> toList(String fileName) 

Source Link

Usage

From source file:com.liferay.util.diff.DiffUtil.java

License:Open Source License

/**
 * The main entrance of this class. This method will compare the two texts,
 * highlight the changes by enclosing them with markers and return a list of
 * <code>DiffResults</code>.
 *
 * @return an array containing two lists of <code>DiffResults</code>, the
 *         first element contains DiffResults related to changes in source
 *         and the second element to changes in target
 *//*from ww w .  ja v  a 2s . c o  m*/
public static List<DiffResult>[] diff(Reader source, Reader target, String addedMarkerStart,
        String addedMarkerEnd, String deletedMarkerStart, String deletedMarkerEnd, int margin) {

    List<DiffResult> sourceResults = new ArrayList<DiffResult>();
    List<DiffResult> targetResults = new ArrayList<DiffResult>();

    List<DiffResult>[] results = new List[] { sourceResults, targetResults };

    // Convert the texts to Lists where each element are lines of the texts.

    List<String> sourceStringList = FileUtil.toList(source);
    List<String> targetStringList = FileUtil.toList(target);

    // Make a a Diff of these lines and iterate over their Differences.

    Diff diff = new Diff(sourceStringList, targetStringList);

    List<Difference> differences = diff.diff();

    Iterator<Difference> itr = differences.iterator();

    while (itr.hasNext()) {
        Difference difference = itr.next();

        if (difference.getAddedEnd() == Difference.NONE) {

            // Lines were deleted from source only.

            _highlightLines(sourceStringList, deletedMarkerStart, deletedMarkerEnd,
                    difference.getDeletedStart(), difference.getDeletedEnd());

            margin = _calculateMargin(sourceResults, targetResults, difference.getDeletedStart(),
                    difference.getAddedStart(), margin);

            List<String> changedLines = _addMargins(sourceResults, sourceStringList,
                    difference.getDeletedStart(), margin);

            _addResults(sourceResults, sourceStringList, changedLines, difference.getDeletedStart(),
                    difference.getDeletedEnd());

            changedLines = _addMargins(targetResults, targetStringList, difference.getAddedStart(), margin);

            int deletedLines = difference.getDeletedEnd() + 1 - difference.getDeletedStart();

            for (int i = 0; i < deletedLines; i++) {
                changedLines.add(CONTEXT_LINE);
            }

            DiffResult diffResult = new DiffResult(difference.getDeletedStart(), changedLines);

            targetResults.add(diffResult);
        } else if (difference.getDeletedEnd() == Difference.NONE) {

            // Lines were added to target only.

            _highlightLines(targetStringList, addedMarkerStart, addedMarkerEnd, difference.getAddedStart(),
                    difference.getAddedEnd());

            margin = _calculateMargin(sourceResults, targetResults, difference.getDeletedStart(),
                    difference.getAddedStart(), margin);

            List<String> changedLines = _addMargins(sourceResults, sourceStringList,
                    difference.getDeletedStart(), margin);

            int addedLines = difference.getAddedEnd() + 1 - difference.getAddedStart();

            for (int i = 0; i < addedLines; i++) {
                changedLines.add(CONTEXT_LINE);
            }

            DiffResult diffResult = new DiffResult(difference.getAddedStart(), changedLines);

            sourceResults.add(diffResult);

            changedLines = _addMargins(targetResults, targetStringList, difference.getAddedStart(), margin);

            _addResults(targetResults, targetStringList, changedLines, difference.getAddedStart(),
                    difference.getAddedEnd());
        } else {

            // Lines were deleted from source and added to target at the
            // same position. It needs to check for characters differences.

            _checkCharDiffs(sourceResults, targetResults, sourceStringList, targetStringList, addedMarkerStart,
                    addedMarkerEnd, deletedMarkerStart, deletedMarkerEnd, difference, margin);
        }
    }

    return results;
}

---