kafka CodeBuffer 源码
kafka CodeBuffer 代码
文件路径：/generator/src/main/java/org/apache/kafka/message/CodeBuffer.java
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.kafka.message;
import java.io.IOException;
import java.io.Writer;
import java.util.ArrayList;
public class CodeBuffer {
private final ArrayList<String> lines;
private int indent;
public CodeBuffer() {
this.lines = new ArrayList<>();
this.indent = 0;
}
public void incrementIndent() {
indent++;
}
public void decrementIndent() {
indent--;
if (indent < 0) {
throw new RuntimeException("Indent < 0");
}
}
public void printf(String format, Object... args) {
lines.add(String.format(indentSpaces() + format, args));
}
public void write(Writer writer) throws IOException {
for (String line : lines) {
writer.write(line);
}
}
public void write(CodeBuffer other) {
for (String line : lines) {
other.lines.add(other.indentSpaces() + line);
}
}
private String indentSpaces() {
StringBuilder bld = new StringBuilder();
for (int i = 0; i < indent; i++) {
bld.append(" ");
}
return bld.toString();
}
@Override
public boolean equals(Object other) {
if (!(other instanceof CodeBuffer)) {
return false;
}
CodeBuffer o = (CodeBuffer) other;
return lines.equals(o.lines);
}
@Override
public int hashCode() {
return lines.hashCode();
}
}
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