com.netflix.spinnaker.halyard.cli.ui.v1.AnsiParagraphBuilder.java Source code

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Here is the source code for com.netflix.spinnaker.halyard.cli.ui.v1.AnsiParagraphBuilder.java

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/*
 * Copyright 2016 Google, 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 com.netflix.spinnaker.halyard.cli.ui.v1;

import lombok.Setter;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.WordUtils;

import java.util.ArrayList;
import java.util.List;

public class AnsiParagraphBuilder {
    @Setter
    int indentWidth = 0;

    @Setter
    int maxLineWidth = 80;

    @Setter
    boolean indentFirstLine = true;

    List<AnsiSnippet> snippets = new ArrayList<>();

    String getIndent() {
        return StringUtils.leftPad("", indentWidth);
    }

    public AnsiSnippet addSnippet(String text) {
        AnsiSnippet snippet = new AnsiSnippet(text);
        snippets.add(snippet);
        return snippet;
    }

    @Override
    public String toString() {
        StringBuilder bodyBuilder = new StringBuilder();

        for (AnsiSnippet snippet : snippets) {
            bodyBuilder.append(snippet.toString());
        }

        String body = bodyBuilder.toString();

        if (maxLineWidth < 0) {
            return body;
        }

        String[] lines = body.split("\n");

        StringBuilder lineBuilder = new StringBuilder();

        for (int i = 0; i < lines.length; i++) {
            String line = lines[i];

            line = WordUtils.wrap(line, maxLineWidth, "\n" + getIndent(), false);

            if (indentFirstLine) {
                line = getIndent() + line;
            }

            lineBuilder.append(line);

            if (i != lines.length - 1) {
                lineBuilder.append("\n");
            }
        }

        return lineBuilder.toString();
    }
}