/**
* Copyright 2012 Twitter, Inc
*
* 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 rfx.server.util.ua;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import java.util.Map;
import org.yaml.snakeyaml.Yaml;
import org.yaml.snakeyaml.constructor.SafeConstructor;
import rfx.server.util.ua.DeviceParser.DevicePattern;
import rfx.server.util.ua.OSParser.OSPattern;
/**
* Java implementation of <a href="https://github.com/tobie/ua-parser">UA Parser</a>
*
* @author Steve Jiang (@sjiang) <gh at iamsteve com>
*/
public class Parser {
private static final String REGEX_YAML_PATH = "configs/regexes.yaml";
private UserAgentParser uaParser;
private OSParser osParser;
private DeviceParser deviceParser;
static Parser _uaParser;
public static Parser load(){
if(_uaParser == null){
try {
FileInputStream uaConfig = new FileInputStream(REGEX_YAML_PATH);
_uaParser = new Parser(uaConfig);
} catch (Exception e) {
System.err.println(e.getMessage());
e.printStackTrace();
System.exit(1);
}
}
return _uaParser;
}
public void printDictionary(){
System.out.println("---------osParser-----------");
List<OSPattern> list = _uaParser.osParser.getPatterns();
for (OSPattern osPattern : list) {
if(osPattern.getOsReplacement() != null){
if(osPattern.getOsReplacement().length()>1){
System.out.println(osPattern.getOsReplacement());
}
}
}
System.out.println("----------deviceParser-----------");
List<DevicePattern> list2 = _uaParser.deviceParser.getPatterns();
for (DevicePattern devicePattern : list2) {
if(devicePattern.getFamilyReplacement() != null){
if(devicePattern.getFamilyReplacement().length()>1){
System.out.println(devicePattern.getFamilyReplacement());
}
}
}
}
public Parser() throws IOException {
this(Parser.class.getResourceAsStream(REGEX_YAML_PATH));
}
public Parser(InputStream regexYaml) {
initialize(regexYaml);
}
public Client parse(String agentString) {
UserAgent ua = parseUserAgent(agentString);
OS os = parseOS(agentString);
Device device = deviceParser.parse(agentString,os);
return new Client(ua, os, device);
}
public UserAgent parseUserAgent(String agentString) {
return uaParser.parse(agentString);
}
public Device parseDevice(String agentString) {
return deviceParser.parse(agentString, parseOS(agentString));
}
public OS parseOS(String agentString) {
return osParser.parse(agentString);
}
private void initialize(InputStream regexYaml) {
Yaml yaml = new Yaml(new SafeConstructor());
Map<String,List> regexConfig = (Map<String,List>) yaml.load(regexYaml);
List<Map> uaParserConfigs = regexConfig.get("user_agent_parsers");
if (uaParserConfigs == null) {
throw new IllegalArgumentException("user_agent_parsers is missing from yaml");
}
uaParser = UserAgentParser.fromList(uaParserConfigs);
List<Map> osParserConfigs = regexConfig.get("os_parsers");
if (osParserConfigs == null) {
throw new IllegalArgumentException("os_parsers is missing from yaml");
}
osParser = OSParser.fromList(osParserConfigs);
List<Map> deviceParserConfigs = regexConfig.get("device_parsers");
if (deviceParserConfigs == null) {
throw new IllegalArgumentException("device_parsers is missing from yaml");
}
deviceParser = DeviceParser.fromList(deviceParserConfigs);
}
}