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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.fw.output.print;
import java.io.IOException;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.StringTokenizer;
import org.apache.commons.csv.CSVFormat;
import org.apache.commons.csv.CSVPrinter;
import org.onap.cli.fw.conf.OnapCommandConstants;
import org.onap.cli.fw.error.OnapCommandOutputPrintingFailed;
import org.onap.cli.fw.output.OnapCommandPrintDirection;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.dataformat.yaml.YAMLMapper;
import net.minidev.json.JSONArray;
import net.minidev.json.JSONObject;
/**
* Oclip Command Table print.
*
*/
public class OnapCommandPrint {
public static final int MAX_COLUMN_LENGTH = 50;
private OnapCommandPrintDirection direction;
private Map<String, List<String>> data = new LinkedHashMap<>();
private boolean printTitle = true;
public OnapCommandPrintDirection getDirection() {
return direction;
}
public void setDirection(OnapCommandPrintDirection direction) {
this.direction = direction;
}
public void addColumn(String header, List<String> data) {
this.data.put(header, data);
}
/**
* Get column.
*
* @param header
* string
* @return list
*/
public List<String> getColumn(String header) {
if (this.data.get(header) == null) {
this.data.put(header, new ArrayList<String>());
}
return this.data.get(header);
}
public boolean isPrintTitle() {
return printTitle;
}
public void setPrintTitle(boolean printTitle) {
this.printTitle = printTitle;
}
private int findMaxRows() {
int max = 1;
if (!this.isPrintTitle()) {
max = 0;
}
for (List<String> cols : this.data.values()) {
if (cols != null && max < cols.size()) {
max = cols.size();
}
}
return max;
}
/**
* Helps to form the rows from columns.
*
* @param isNormalize
* boolean
* @return +--------------+-----------+-----------------------------+ | header1 | header 2 | header 3 |
* +--------------+-----------+-----------------------------+ | v1 | List[line| v 3 | | | 1, line2]| |
* +--------------+-----------+-----------------------------+ | null | yyyyyy 2 | xxxxxx 3 |
* +--------------+-----------+-----------------------------+
*/
private List<List<Object>> formRows(boolean isNormalize) {
List<List<Object>> rows = new ArrayList<>();
// add title
if (this.isPrintTitle()) {
List<Object> list = new ArrayList<>();
for (String key : this.data.keySet()) {
if (isNormalize && key != null && key.length() > MAX_COLUMN_LENGTH) {
list.add(splitIntoList(key, MAX_COLUMN_LENGTH));
} else {
list.add(key);
}
}
rows.add(list);
}
// form row
for (int i = 0; i < this.findMaxRows(); i++) {
List<Object> row = new ArrayList<>();
for (List<String> cols : this.data.values()) {
if (cols != null && cols.size() > i) {
String value = cols.get(i);
// split the cell into multiple sub rows
if (isNormalize && value != null && value.length() > MAX_COLUMN_LENGTH) {
row.add(splitIntoList(value, MAX_COLUMN_LENGTH));
} else {
// store as string (one entry)
row.add(value);
}
} else {
// no value exist for this column
row.add(null);
}
}
rows.add(row);
}
return rows;
}
/**
* Splits big strings into list of strings based on maxCharInLine size.
*
* @param input
* input string
* @param maxCharInLine
* max length
* @return list of strings
*/
public List<String> splitIntoList(String input, int maxCharInLine) {
String inp = input;
if (inp == null || "".equals(inp) || maxCharInLine <= 0) {
return Collections.emptyList();
}
// new line is converted to space char
if (inp.contains("\n")) {
inp = inp.replaceAll("\n", "");
}
StringTokenizer tok = new StringTokenizer(inp, " ");
StringBuilder output = new StringBuilder(inp.length());
int lineLen = 0;
while (tok.hasMoreTokens()) {
String word = tok.nextToken();
while (word.length() >= maxCharInLine) {
output.append(word.substring(0, maxCharInLine - lineLen) + "\n");
word = word.substring(maxCharInLine - lineLen);
lineLen = 0;
}
if (lineLen + word.length() >= maxCharInLine) {
output.append("\n");
lineLen = 0;
}
output.append(word + " ");
lineLen += word.length() + 1;
}
String[] strArray = output.toString().split("\n");
return Arrays.asList(strArray);
}
/**
* Helps to print table.
*
* @param printSeparator
* Prints with line separator
* @return +--------------+-----------+-----------------------------+ | header1 | header 2 | header 3 |
* +--------------+-----------+-----------------------------+ | v1 | line 1 | v 3 | | | line 2 | |
* +--------------+-----------+-----------------------------+ | | yyyyyy 2 | xxxxxx 3 |
* +--------------+-----------+-----------------------------+
*/
public String printTable(boolean printSeparator) {
List<List<Object>> rows = this.formRows(true);
TableGenerator table = new TableGenerator();
return table.generateTable(rows, printSeparator);
}
/**
* Print output in csv format.
*
* @return string
* @throws OnapCommandOutputPrintingFailed
* exception
*/
public String printCsv() throws OnapCommandOutputPrintingFailed {
CSVFormat formattor = CSVFormat.DEFAULT.withRecordSeparator(System.getProperty("line.separator"));
try (StringWriter writer = new StringWriter();
CSVPrinter printer = new CSVPrinter(writer, formattor);) {
List<List<Object>> rows = this.formRows(false);
for (int i = 0; i < this.findMaxRows(); i++) {
printer.printRecord(rows.get(i));
}
return writer.toString();
} catch (IOException e) {
throw new OnapCommandOutputPrintingFailed(e);
}
}
public String printJson() {
List<List<Object>> rows = this.formRows(false);
JSONArray array = new JSONArray();
//skip first row title
List<Object> titleRow = rows.get(0);
for (int i=1; i<rows.size(); i++) {
JSONObject rowO = new JSONObject();
for (int j=0; j<titleRow.size(); j++) {
rowO.put(titleRow.get(j).toString(), rows.get(i).get(j).toString());
}
array.add(rowO);
}
JSONObject json = new JSONObject();
json.put(OnapCommandConstants.RESULTS, array);
return json.toJSONString();
}
public String printYaml() throws OnapCommandOutputPrintingFailed {
try {
return new YAMLMapper().writeValueAsString(new ObjectMapper().readTree(this.printJson()));
} catch (IOException e) {
throw new OnapCommandOutputPrintingFailed(e); // NOSONAR
}
}
}
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