/*
* Copyright 2010 the original author or authors.
*
* 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.gradle.logging.internal;
import org.gradle.api.logging.StandardOutputListener;
import org.gradle.logging.StyledTextOutput;
import java.io.PrintWriter;
import java.io.StringWriter;
public abstract class AbstractStyledTextOutput implements StyledTextOutput, StandardOutputListener {
private static final String EOL = System.getProperty("line.separator");
private Style style = Style.Normal;
public StyledTextOutput append(char c) {
text(String.valueOf(c));
return this;
}
public StyledTextOutput append(CharSequence csq) {
text(csq == null ? "null" : csq);
return this;
}
public StyledTextOutput append(CharSequence csq, int start, int end) {
text(csq == null ? "null" : csq.subSequence(start, end));
return this;
}
public StyledTextOutput format(String pattern, Object... args) {
text(String.format(pattern, args));
return this;
}
public StyledTextOutput println(Object text) {
text(text);
println();
return this;
}
public StyledTextOutput formatln(String pattern, Object... args) {
format(pattern, args);
println();
return this;
}
public void onOutput(CharSequence output) {
text(output);
}
public StyledTextOutput println() {
text(EOL);
return this;
}
public StyledTextOutput text(Object text) {
doAppend(text == null ? "null" : text.toString());
return this;
}
public StyledTextOutput exception(Throwable throwable) {
StringWriter out = new StringWriter();
PrintWriter writer = new PrintWriter(out);
throwable.printStackTrace(writer);
writer.close();
text(out.toString());
return this;
}
public StyledTextOutput withStyle(Style style) {
return new StyleOverrideTextOutput(style, this);
}
public StyledTextOutput style(Style style) {
if (style != this.style) {
this.style = style;
doStyleChange(style);
}
return this;
}
public Style getStyle() {
return style;
}
protected abstract void doAppend(String text);
protected void doStyleChange(Style style) {
}
private static class StyleOverrideTextOutput implements StyledTextOutput {
private final Style style;
private final AbstractStyledTextOutput textOutput;
public StyleOverrideTextOutput(Style style, AbstractStyledTextOutput textOutput) {
this.style = style;
this.textOutput = textOutput;
}
public StyledTextOutput append(char c) {
Style original = textOutput.getStyle();
textOutput.style(style).append(c).style(original);
return this;
}
public StyledTextOutput append(CharSequence csq) {
Style original = textOutput.getStyle();
textOutput.style(style).append(csq).style(original);
return this;
}
public StyledTextOutput append(CharSequence csq, int start, int end) {
throw new UnsupportedOperationException();
}
public StyledTextOutput style(Style style) {
throw new UnsupportedOperationException();
}
public StyledTextOutput withStyle(Style style) {
throw new UnsupportedOperationException();
}
public StyledTextOutput text(Object text) {
Style original = textOutput.getStyle();
textOutput.style(style).text(text).style(original);
return this;
}
public StyledTextOutput println(Object text) {
Style original = textOutput.getStyle();
textOutput.style(style).text(text).style(original).println();
return this;
}
public StyledTextOutput format(String pattern, Object... args) {
Style original = textOutput.getStyle();
textOutput.style(style).format(pattern, args).style(original);
return this;
}
public StyledTextOutput formatln(String pattern, Object... args) {
throw new UnsupportedOperationException();
}
public StyledTextOutput println() {
throw new UnsupportedOperationException();
}
public StyledTextOutput exception(Throwable throwable) {
throw new UnsupportedOperationException();
}
}
}