com.amihaiemil.eoyaml.ReadPointedScalar Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of eo-yaml Show documentation
YAML for Java 8 and above. Very similar to the JSON-P api.
There is a newer version: 8.0.6
/**
 * Copyright (c) 2016-2020, Mihai Emil Andronache
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 * Redistributions of source code must retain the above copyright notice, this
 *  list of conditions and the following disclaimer.
 *  Redistributions in binary form must reproduce the above copyright notice,
 *  this list of conditions and the following disclaimer in the documentation
 *  and/or other materials provided with the distribution.
 * Neither the name of the copyright holder nor the names of its
 *  contributors may be used to endorse or promote products derived from
 *  this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */
package com.amihaiemil.eoyaml;

import java.util.Collection;
import java.util.LinkedList;

/**
 * Read Yaml Scalar when previous yaml line ends with '>' character.
 * @author Sherif Waly ([email protected])
 * @version $Id: 1fb425cb390445d8131dbe24c17045f842c0b8b9 $
 * @since 1.0.2
 * @todo #109:30m/DEV Refactor the implementation of value() and indent()
 *  methods.
 */
final class ReadPointedScalar implements YamlNode {

    /**
     * Lines to be represented as a wrapped scalar.
     */
    private YamlLines lines;

    /**
     * Ctor.
     * @param lines Given lines to represent.
     */
    ReadPointedScalar(final YamlLines lines) {
        this.lines = lines;
    }

    @Override
    public int compareTo(final YamlNode other) {
        int result = -1;
        if (this == other) {
            result = 0;
        } else if (other == null) {
            result = 1;
        } else if (other instanceof Scalar) {
            result = this.value().compareTo(((Scalar) other).value());
        } else if (other instanceof ReadPipeScalar) {
            result = this.value().compareTo(((ReadPipeScalar) other).value());
        } else if (other instanceof ReadPointedScalar) {
            result =
                this.value().compareTo(((ReadPointedScalar) other).value());
        }
        return result;
    }

    @Override
    public Collection values() {
        return new LinkedList();
    }

    @Override
    public String indent(final int indentation) {
        StringBuilder builder = new StringBuilder();
        for(final YamlLine line: this.lines) {
            if(line.trimmed().length() == 0 || line.indentation() > 0) {
                if(this.doNotEndWithNewLine(builder)) {
                    builder.append('\n');
                }
                int spaces = line.indentation();
                if(spaces > 0) {
                    for(int i = 0; i < spaces + indentation; i++) {
                        builder.append(' ');
                    }
                }
                builder.append(line.trimmed());
                builder.append('\n');
            } else {
                if(this.doNotEndWithNewLine(builder)) {
                    builder.append(' ');
                } else {
                    for(int i = 0; i < indentation; i++) {
                        builder.append(' ');
                    }
                }
                builder.append(line.trimmed());
            }
        }
        return builder.toString();
    }

    /**
     * Checks whether StringBuilder do not end with newline or not.
     * @param builder StringBuilder
     * @return Boolean Whether builder do not end with newline char or not
     */
    private boolean doNotEndWithNewLine(final StringBuilder builder) {
        return builder.length() > 0
                && builder.charAt(builder.length()-1) != '\n';
    }
    /**
     * Value of this scalar.
     * @return String
     */
    public String value() {
        StringBuilder builder = new StringBuilder();
        for(final YamlLine line: this.lines) {
            if(line.trimmed().length() == 0 || line.indentation() > 0) {
                if(this.doNotEndWithNewLine(builder)) {
                    builder.append('\n');
                }
                int indentation = line.indentation();
                for(int i = 0; i < indentation; i++) {
                    builder.append(' ');
                }
                builder.append(line.trimmed());
                builder.append('\n');
            } else {
                if(this.doNotEndWithNewLine(builder)) {
                    builder.append(' ');
                }
                builder.append(line.trimmed());
            }
        }
        return builder.toString();
    }

    @Override
    public String toString() {
        return this.indent(0);
    }

}