net.dongliu.apk.parser.utils.ResourceFetcher Maven / Gradle / Ivy
package net.dongliu.apk.parser.utils;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* fetch dependency resource file from android source
*
* @author Liu Dong [email protected]
*/
public class ResourceFetcher {
// from https://android.googlesource.com/platform/frameworks/base/+/master/core/res/res/values/public.xml
private void fetchSystemAttrIds()
throws IOException, SAXException, ParserConfigurationException {
String url = "https://android.googlesource.com/platform/frameworks/base/+/master/core/res/res/values/public.xml";
String html = getUrl(url);
String xml = retrieveCode(html);
if (xml != null) {
parseAttributeXml(xml);
}
}
private void parseAttributeXml(String xml)
throws IOException, ParserConfigurationException, SAXException {
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser parser = factory.newSAXParser();
final List> attrIds = new ArrayList<>();
DefaultHandler dh = new DefaultHandler() {
@Override
public void startElement(String uri, String localName, String qName,
Attributes attributes) throws SAXException {
if (!qName.equals("public")) {
return;
}
String type = attributes.getValue("type");
if (type == null) {
return;
}
if (type.equals("attr")) {
//attr ids.
String idStr = attributes.getValue("id");
if (idStr == null) {
return;
}
String name = attributes.getValue("name");
if (idStr.startsWith("0x")) {
idStr = idStr.substring(2);
}
int id = Integer.parseInt(idStr, 16);
attrIds.add(new Pair<>(id, name));
}
}
};
parser.parse(new ByteArrayInputStream(xml.getBytes(StandardCharsets.UTF_8)), dh);
for (Pair pair : attrIds) {
System.out.println(String.format("%s=%d", pair.getRight(), pair.getLeft()));
}
}
// the android system r style.
// see http://developer.android.com/reference/android/R.style.html
// from https://android.googlesource.com/platform/frameworks/base/+/master/api/current.txt r.style section
private void fetchSystemStyle() throws IOException {
String url = "https://android.googlesource.com/platform/frameworks/base/+/master/api/current.txt";
String html = getUrl(url);
String code = retrieveCode(html);
int begin = code.indexOf("R.style");
int end = code.indexOf("}", begin);
String styleCode = code.substring(begin, end);
String[] lines = styleCode.split("\n");
for (String line : lines) {
line = line.trim();
if (line.startsWith("field public static final")) {
line = Utils.substringBefore(line, ";").replace("deprecated ", "")
.substring("field public static final int ".length()).replace("_", ".");
System.out.println(line);
}
}
}
private String getUrl(String url) throws IOException {
HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection();
try {
conn.setRequestMethod("GET");
conn.setReadTimeout(10000);
conn.setConnectTimeout(10000);
byte[] bytes = Utils.toByteArray(conn.getInputStream());
return new String(bytes, StandardCharsets.UTF_8);
} finally {
conn.disconnect();
}
}
private String retrieveCode(String html) {
Matcher matcher = Pattern.compile("(.*?)
").matcher(html);
if (matcher.find()) {
String codeHtml = matcher.group(1);
return codeHtml.replace("", "\n").replaceAll("<[^>]+>", "").replace("<", "<")
.replace(""", "\"").replace(">", ">");
} else {
return null;
}
}
public static void main(String[] args)
throws ParserConfigurationException, SAXException, IOException {
ResourceFetcher fetcher = new ResourceFetcher();
fetcher.fetchSystemAttrIds();
//fetcher.fetchSystemStyle();
}
}