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/*
* Copyright (C) 2011 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.loganalysis.parser;
import com.android.loganalysis.item.ProcrankItem;
import com.android.loganalysis.util.ArrayUtil;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* A {@link IParser} to handle the output of {@code procrank}. Memory values returned are in units
* of kilobytes.
*/
public class ProcrankParser implements IParser {
/** Match a valid line, such as:
* " 1313 78128K 77996K 48603K 45812K com.google.android.apps.maps" */
private static final Pattern LINE_PAT = Pattern.compile(
"\\s*(\\d+)\\s+" + /* PID [1] */
"(\\d+)K\\s+(\\d+)K\\s+(\\d+)K\\s+(\\d+)K\\s+" + /* Vss Rss Pss Uss [2-5] */
"(\\S+)" /* process name [6] */);
/** Match the end of the Procrank table, determined by three sets of "------". */
private static final Pattern END_PAT = Pattern.compile("^\\s+-{6}\\s+-{6}\\s+-{6}");
/**
* {@inheritDoc}
*/
@Override
public ProcrankItem parse(List<String> lines) {
final String text = ArrayUtil.join("\n", lines).replaceAll("\\s+$", "");
if ("".equals(text.trim())) {
return null;
}
ProcrankItem item = new ProcrankItem();
item.setText(text);
for (String line : lines) {
// If we have reached the end.
Matcher endMatcher = END_PAT.matcher(line);
if (endMatcher.matches()) {
return item;
}
Matcher m = LINE_PAT.matcher(line);
if (m.matches()) {
item.addProcrankLine(Integer.parseInt(m.group(1)), m.group(6),
Integer.parseInt(m.group(2)), Integer.parseInt(m.group(3)),
Integer.parseInt(m.group(4)), Integer.parseInt(m.group(5)));
}
}
return item;
}
}
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