Examples with DeleteDelta org.apache.commons.jrcs.diff.DeleteDelta used on opensource projects

Example 1 with DeleteDelta

use of org.apache.commons.jrcs.diff.DeleteDelta in project OpenGrok by OpenGrok.

the class Node method patch.

/**
     * Apply the deltas in the current node to the given text.
     * @param original the text to be patched
     * @param annotate set to true to have each text line be a
     * {@link Line Line} object that identifies the revision in which
     * the line was changed or added.
     * @throws InvalidFileFormatException if the deltas cannot be parsed.
     * @throws PatchFailedException if the diff engine determines that
     * the deltas cannot apply to the given text.
     */
public void patch(List original, boolean annotate) throws InvalidFileFormatException, org.apache.commons.jrcs.diff.PatchFailedException {
    Revision revision = new Revision();
    for (int it = 0; it < text.length; it++) {
        String cmd = text[it].toString();
        java.util.StringTokenizer t = new StringTokenizer(cmd, "ad ", true);
        char action;
        int n;
        int count;
        try {
            action = t.nextToken().charAt(0);
            n = Integer.parseInt(t.nextToken());
            // skip the space
            t.nextToken();
            count = Integer.parseInt(t.nextToken());
        } catch (Exception e) {
            throw new InvalidFileFormatException(version + ":line:" + ":" + e.getMessage());
        }
        if (action == 'd') {
            revision.addDelta(new DeleteDelta(new Chunk(n - 1, count)));
        } else if (action == 'a') {
            revision.addDelta(new AddDelta(n, new Chunk(getTextLines(it + 1, it + 1 + count), 0, count, n - 1)));
            it += count;
        } else {
            throw new InvalidFileFormatException(version.toString());
        }
    }
    revision.applyTo(original);
}