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/*
* Copyright 2017 Huawei Technologies Co., Ltd.
*
* 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 org.onap.cli.main.utils;
import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.commons.codec.binary.Base64;
import org.apache.commons.io.FileUtils;
import org.onap.cli.fw.error.OnapCommandException;
import org.onap.cli.fw.error.OnapCommandInvalidParameterValue;
import org.onap.cli.fw.input.OnapCommandParameter;
import org.onap.cli.fw.input.OnapCommandParameterType;
import org.onap.cli.main.error.OnapCliArgumentValueMissing;
import org.onap.cli.main.error.OnapCliInvalidArgument;
import com.esotericsoftware.yamlbeans.YamlReader;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonElement;
import com.google.gson.reflect.TypeToken;
import java.io.Reader;
import java.io.InputStreamReader;
import java.io.FileReader;
/**
* Oclip CLI utilities.
*
*/
public class OnapCliArgsParser {
private static Gson gson = new GsonBuilder().serializeNulls().create();
/**
* private Constructor.
*/
private OnapCliArgsParser() {
}
/**
* It read thru the args and populate the given params for short optional, long option and postional args the idx of
* positional args, is calculated based on the position at which it present in the params and args.
*
* @param params
* List of command paramters
* @param args
* Array of arguments
* @throws OnapCliArgumentValueMissing
* ArgumentValueMissing exception
* @throws OnapCliInvalidArgument
* Invalid argument exception
* @throws OnapCommandInvalidParameterValue
* exception
*/
public static void populateParams(Set<OnapCommandParameter> params, List<String> args)
throws OnapCommandException {
Map<String, String> shortOptionMap = new HashMap<>();
Map<String, String> longOptionMap = new HashMap<>();
List<String> positionArgs = new ArrayList<>();
Map<String, OnapCommandParameter> paramMap = new HashMap<>();
for (OnapCommandParameter param : params) {
boolean positional = true;
if (param.getShortOption() != null) {
shortOptionMap.put(OnapCommandParameter.printShortOption(param.getShortOption()), param.getName());
positional = false;
}
if (param.getLongOption() != null) {
longOptionMap.put(OnapCommandParameter.printLongOption(param.getLongOption()), param.getName());
positional = false;
}
if (positional) {
positionArgs.add(param.getName());
}
paramMap.put(param.getName(), param);
}
int positionalIdx = 0;
for (int i = 0; i < args.size(); i++) {
String paramName = null;
if (shortOptionMap.containsKey(args.get(i))) {
paramName = shortOptionMap.get(args.get(i));
} else if (longOptionMap.containsKey(args.get(i))) {
paramName = longOptionMap.get(args.get(i));
}
if (paramName != null) {
// end of the list or if its option rather than a value
if ((i + 1) == args.size() || args.get(i + 1).startsWith("-")) {
if (paramMap.get(paramName).getParameterType().equals(OnapCommandParameterType.BOOL)) {
paramMap.get(paramName).setValue(true);
continue;
}
throw new OnapCliArgumentValueMissing(args.get(i));
}
if (paramMap.get(paramName).getParameterType().equals(OnapCommandParameterType.JSON)) {
paramMap.get(paramName).setValue(readJsonStringFromUrl(args.get(i + 1),
paramMap.get(paramName).getName()));
i++;
continue;
} else if (paramMap.get(paramName).getParameterType().equals(OnapCommandParameterType.TEXT)) {
paramMap.get(paramName).setValue(readTextStringFromUrl(args.get(i + 1),
paramMap.get(paramName).getName()));
i++;
continue;
} else if (paramMap.get(paramName).getParameterType().equals(OnapCommandParameterType.YAML)) {
String value = readYamlStringFromUrl(args.get(i + 1),
paramMap.get(paramName).getName());
paramMap.get(paramName).setValue(value);
i++;
continue;
} else if (paramMap.get(paramName).getParameterType().equals(OnapCommandParameterType.BYTE)) {
paramMap.get(paramName).setValue(readBytesFromUrl(args.get(i + 1),
paramMap.get(paramName).getName()));
i++;
continue;
} else if (paramMap.get(paramName).getParameterType()
.equals(OnapCommandParameterType.ARRAY)) {
Object value = paramMap.get(paramName).getValue();
List<String> list = (List<String>) value;
list.add(readTextStringFromUrl(args.get(i + 1), paramMap.get(paramName).getName()));
paramMap.get(paramName).setValue(list);
i++;
continue;
} else if (paramMap.get(paramName).getParameterType()
.equals(OnapCommandParameterType.MAP)) {
Object value = paramMap.get(paramName).getValue();
Map<String, String> map = (Map<String, String>) value;
String arg = args.get(i + 1);
String[] argArr = arg.split("=", 2);
if (argArr.length != 2) {
throw new OnapCliInvalidArgument(
paramMap.get(paramName).getName(),
"it should be in the form of <key>=<value>");
}
map.put(argArr[0], argArr[1]);
paramMap.get(paramName).setValue(map);
i++;
continue;
}
paramMap.get(paramName).setValue(args.get(i + 1));
i++;
continue;
}
// it is positional option
// Positional arg is missing from the params
if (positionalIdx >= positionArgs.size()) {
throw new OnapCliInvalidArgument(
args.get(i),
"No positional argument is defined for this one");
}
paramMap.get(positionArgs.get(positionalIdx)).setValue(args.get(i));
positionalIdx++;
}
params.clear();
params.addAll(paramMap.values());
}
public static String readJsonStringFromUrl(String input, String argName) throws OnapCliInvalidArgument {
String jsonValue;
try {
File file = new File(input);
if (file.isFile()) {
try(Reader reader = new FileReader(file)){
jsonValue = gson.fromJson(reader, JsonElement.class).toString();
}
return jsonValue;
} else if (input.startsWith("file:") || input.startsWith("http:") || input.startsWith("ftp:")) {
URL jsonUrl = new URL(input);
try(Reader reader = new InputStreamReader(jsonUrl.openStream())){
jsonValue = gson.fromJson(reader, JsonElement.class).toString();
}
return jsonValue;
} else {
return gson.fromJson(input, JsonElement.class).toString();
}
} catch (Exception e) { // NOSONAR
throw new OnapCliInvalidArgument(argName, e);
}
}
public static String readTextStringFromUrl(String input, String argName) throws OnapCliInvalidArgument {
try {
File file = new File(input);
if (file.isFile()) {
return FileUtils.readFileToString(file, (Charset) null);
} else {
return input;
}
} catch (IOException e) {
throw new OnapCliInvalidArgument(argName, e);
}
}
public static String readYamlStringFromUrl(String input, String argName) throws OnapCliInvalidArgument {
try {
File file = new File(input);
if (file.isFile()) {
String value = FileUtils.readFileToString(file, (Charset) null);
YamlReader reader = new YamlReader(value);
value = (String) reader.read();
return value;
} else {
return input;
}
} catch (IOException e) {
throw new OnapCliInvalidArgument(argName, e);
}
}
public static String readBytesFromUrl(String input, String argName) throws OnapCliInvalidArgument {
try {
File file = new File(input);
if (file.isFile()) {
byte[] encodeBase64 = Base64.encodeBase64(FileUtils.readFileToByteArray(file));
return new String(encodeBase64);
} else {
byte[] encodeBase64 = Base64.encodeBase64(input.getBytes());
return new String(encodeBase64);
}
} catch (IOException e) {
throw new OnapCliInvalidArgument(argName, e);
}
}
public static List<String> convertJsonToListString(String arg, String json) throws OnapCliInvalidArgument {
TypeToken<List<String>> mapType = new TypeToken<List<String>>() {
};
try {
return gson.fromJson(json, mapType.getType());
} catch (Exception e) { // NOSONAR
throw new OnapCliInvalidArgument(arg, e);
}
}
public static Map<String, String> convertJsonToMapString(String arg, String json) throws OnapCliInvalidArgument {
TypeToken<Map<String, String>> mapType = new TypeToken<Map<String, String>>() {
};
try {
return gson.fromJson(json, mapType.getType());
} catch (Exception e) { // NOSONAR
throw new OnapCliInvalidArgument(arg, e);
}
}
}
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