Merge pull request #18264 from making
* pr/18264: Add ANSI 8-bit color image banner support Polish 'Add ANSI 8-bit color support' Add ANSI 8-bit color support Closes gh-18264pull/18321/head
Phillip Webb
5 years ago
commit
18396a3dc3
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/*
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* Copyright 2012-2019 the original author or authors.
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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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* https://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 org.springframework.boot.ansi;
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import org.springframework.util.Assert;
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/**
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* {@link AnsiElement} implementation for ANSI 8-bit foreground or background color codes.
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*
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* @author Toshiaki Maki
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* @author Phillip Webb
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* @since 2.2.0
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* @see #foreground(int)
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* @see #background(int)
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*/
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public final class Ansi8BitColor implements AnsiElement {
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private final String prefix;
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private final int code;
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/**
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* Create a new {@link Ansi8BitColor} instance.
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* @param prefix the prefix escape chars
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* @param code color code (must be 0-255)
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* @throws IllegalArgumentException if color code is not between 0 and 255.
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*/
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private Ansi8BitColor(String prefix, int code) {
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Assert.isTrue(code >= 0 && code <= 255, "Code must be between 0 and 255");
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this.prefix = prefix;
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this.code = code;
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}
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@Override
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public boolean equals(Object obj) {
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if (this == obj) {
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return true;
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}
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if (obj == null || getClass() != obj.getClass()) {
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return false;
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}
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Ansi8BitColor other = (Ansi8BitColor) obj;
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return this.prefix.equals(other.prefix) && this.code == other.code;
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}
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@Override
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public int hashCode() {
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return this.prefix.hashCode() * 31 + this.code;
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}
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@Override
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public String toString() {
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return this.prefix + this.code;
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}
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/**
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* Return a foreground ANSI color code instance for the given code.
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* @param code the color code
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* @return an ANSI color code instance
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*/
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public static Ansi8BitColor foreground(int code) {
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return new Ansi8BitColor("38;5;", code);
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}
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/**
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* Return a background ANSI color code instance for the given code.
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* @param code the color code
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* @return an ANSI color code instance
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*/
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public static Ansi8BitColor background(int code) {
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return new Ansi8BitColor("48;5;", code);
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}
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}
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@ -0,0 +1,67 @@
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/*
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* Copyright 2012-2019 the original author or authors.
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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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* https://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 org.springframework.boot.ansi;
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import org.junit.jupiter.api.Test;
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import static org.assertj.core.api.Assertions.assertThat;
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import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
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/**
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* Tests for {@link Ansi8BitColor}.
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*
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* @author Toshiaki Maki
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* @author Phillip Webb
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*/
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class Ansi8BitColorTests {
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@Test
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void toStringWhenForegroundAddsCorrectPrefix() {
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assertThat(Ansi8BitColor.foreground(208).toString()).isEqualTo("38;5;208");
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}
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@Test
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void toStringWhenBackgroundAddsCorrectPrefix() {
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assertThat(Ansi8BitColor.background(208).toString()).isEqualTo("48;5;208");
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}
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@Test
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void forgroundWhenOutsideBoundsThrowsException() {
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assertThatIllegalArgumentException().isThrownBy(() -> Ansi8BitColor.foreground(-1))
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.withMessage("Code must be between 0 and 255");
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assertThatIllegalArgumentException().isThrownBy(() -> Ansi8BitColor.foreground(256))
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.withMessage("Code must be between 0 and 255");
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}
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@Test
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void backgroundWhenOutsideBoundsThrowsException() {
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assertThatIllegalArgumentException().isThrownBy(() -> Ansi8BitColor.background(-1))
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.withMessage("Code must be between 0 and 255");
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assertThatIllegalArgumentException().isThrownBy(() -> Ansi8BitColor.background(256))
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.withMessage("Code must be between 0 and 255");
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}
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@Test
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void equalsAndHashCode() {
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Ansi8BitColor one = Ansi8BitColor.foreground(123);
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Ansi8BitColor two = Ansi8BitColor.foreground(123);
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Ansi8BitColor three = Ansi8BitColor.background(123);
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assertThat(one.hashCode()).isEqualTo(two.hashCode());
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assertThat(one).isEqualTo(one).isEqualTo(two).isNotEqualTo(three).isNotEqualTo(null).isNotEqualTo("foo");
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}
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}
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@ -1,3 +1,4 @@
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name=Phil
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sample.name=Andy
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spring.banner.image.bitdepth=8
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