com.google.javascript.jscomp.AbstractMessageFormatter Maven / Gradle / Ivy
/*
* Copyright 2007 The Closure Compiler 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 com.google.javascript.jscomp;
import com.google.common.collect.ImmutableSet;
import java.util.Set;
/**
* Abstract message formatter providing default behavior for implementations
* of {@link MessageFormatter} needing a {@link SourceExcerptProvider}.
*
*/
public abstract class AbstractMessageFormatter implements MessageFormatter {
private final SourceExcerptProvider source;
private boolean colorize;
public AbstractMessageFormatter(SourceExcerptProvider source) {
this.source = source;
}
public void setColorize(boolean colorize) {
this.colorize = colorize;
}
/**
* Get the source excerpt provider.
*/
protected final SourceExcerptProvider getSource() {
return source;
}
private static final Set SUPPORTED_COLOR_TERMINALS =
ImmutableSet.of("xterm",
"xterm-color",
"xterm-256color",
"screen-bce");
static boolean termSupportsColor(String term) {
return SUPPORTED_COLOR_TERMINALS.contains(term);
}
private static enum Color {
ERROR("\033[31m"),
WARNING("\033[35m"),
NO_COLOR("\033[39m"),
BOLD("\033[1m"),
UNBOLD("\033[0m");
private final String controlCharacter;
Color(String controlCharacter) {
this.controlCharacter = controlCharacter;
}
public String getControlCharacter() {
return controlCharacter;
}
}
String getLevelName(CheckLevel level) {
switch (level) {
case ERROR: return maybeColorize("ERROR", Color.ERROR);
case WARNING: return maybeColorize("WARNING", Color.WARNING);
default: return level.toString();
}
}
protected String maybeEmbolden(String text) {
if (!colorize) {
return text;
}
return Color.BOLD.getControlCharacter() +
text + Color.UNBOLD.getControlCharacter();
}
private String maybeColorize(String text, Color color) {
if (!colorize) {
return text;
}
return color.getControlCharacter() +
text + Color.NO_COLOR.getControlCharacter();
}
}