112 lines
3.4 KiB
Java
112 lines
3.4 KiB
Java
/*
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* Copyright (c) 2016 Uber Technologies, Inc. (hoodie-dev-group@uber.com)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.uber.hoodie.cli;
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import dnl.utils.text.table.TextTable;
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import java.io.ByteArrayOutputStream;
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import java.io.PrintStream;
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import java.nio.charset.Charset;
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import java.util.List;
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import java.util.Map;
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import java.util.Optional;
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import java.util.function.Function;
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/**
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* Helper class to render table for hoodie-cli
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*/
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public class HoodiePrintHelper {
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/**
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* Print header and raw rows
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* @param header Header
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* @param rows Raw Rows
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* @return output
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*/
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public static String print(String[] header, String[][] rows) {
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TextTable textTable = new TextTable(header, rows);
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return printTextTable(textTable);
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}
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/**
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* Serialize Table to printable string
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* @param rowHeader Row Header
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* @param fieldNameToConverterMap Field Specific Converters
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* @param sortByField Sorting field
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* @param isDescending Order
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* @param limit Limit
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* @param headerOnly Headers only
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* @param rows List of rows
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* @return Serialized form for printing
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*/
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public static String print(TableHeader rowHeader,
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Map<String, Function<Object, String>> fieldNameToConverterMap,
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String sortByField, boolean isDescending, Integer limit, boolean headerOnly,
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List<Comparable[]> rows) {
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if (headerOnly) {
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return HoodiePrintHelper.print(rowHeader);
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}
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Table table = new Table(rowHeader, fieldNameToConverterMap,
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Optional.ofNullable(sortByField.isEmpty() ? null : sortByField),
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Optional.ofNullable(isDescending),
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Optional.ofNullable(limit <= 0 ? null : limit)).addAllRows(rows).flip();
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return HoodiePrintHelper.print(table);
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}
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/**
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* Render rows in Table
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* @param buffer Table
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* @return output
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*/
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private static String print(Table buffer) {
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String[] header = new String[buffer.getFieldNames().size()];
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buffer.getFieldNames().toArray(header);
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String[][] rows = buffer.getRenderRows().stream()
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.map(l -> l.stream().toArray(String[]::new))
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.toArray(String[][]::new);
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TextTable textTable = new TextTable(header, rows);
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return printTextTable(textTable);
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}
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/**
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* Render only header of the table
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* @param header Table Header
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* @return output
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*/
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private static String print(TableHeader header) {
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String[] head = new String[header.getFieldNames().size()];
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header.getFieldNames().toArray(head);
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TextTable textTable = new TextTable(head, new String[][]{});
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return printTextTable(textTable);
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}
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/**
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* Print Text table
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* @param textTable Text table to be printed
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* @return
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*/
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private static String printTextTable(TextTable textTable) {
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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PrintStream ps = new PrintStream(baos);
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textTable.printTable(ps, 4);
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return new String(baos.toByteArray(), Charset.forName("utf-8"));
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}
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}
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