Error6Parser.java

/*
 * Copyright (C) 2015 The Android Open Source Project
 *
 * 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 com.android.ide.common.blame.parser.aapt;

import com.android.annotations.NonNull;
import com.android.ide.common.blame.Message;
import com.android.ide.common.blame.parser.util.OutputLineReader;
import com.android.ide.common.blame.parser.ParsingFailedException;
import com.android.utils.ILogger;
import com.google.common.base.Strings;

import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

class Error6Parser extends AbstractAaptOutputParser {

    /**
     * 4-line aapt error.
     * <pre>
     * ERROR: 9-path image <path> malformed
     * </pre>
     * <p/> Line 2 and 3 are taken as-is while line 4 is ignored. It repeats with
     * <pre>
     * ERROR: failure processing <path>
     * </pre>
     */
    private static final Pattern MSG_PATTERN = Pattern
            .compile("^ERROR:\\s+9-patch\\s+image\\s+(.+)\\s+malformed\\.$");

    @Override
    public boolean parse(@NonNull String line, @NonNull OutputLineReader reader, @NonNull List<Message> messages, @NonNull ILogger logger)
            throws ParsingFailedException {
        Matcher m = MSG_PATTERN.matcher(line);
        if (!m.matches()) {
            return false;
        }
        String sourcePath = m.group(1);
        String msgText = line; // default message is the line in case we don't find anything else
        if (reader.hasNextLine()) {
            msgText = Strings.nullToEmpty(reader.readLine()).trim();
            if (reader.hasNextLine()) {
                msgText = msgText + " - " + Strings.nullToEmpty(reader.readLine()).trim();
                // skip the next line
                reader.skipNextLine();
            }
        }
        Message msg = createMessage(Message.Kind.ERROR, msgText, sourcePath,
                null, "", logger);
        messages.add(msg);
        return true;
    }
}